Edgewise Therapeutics, Inc. - Annual Report: 2021 (Form 10-K)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2021

or

☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

EXCHANGE ACT OF 1934

Commission File Number: 001-40236

Edgewise Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

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3415 Colorado Ave.

Boulder, CO 80303

(Address of Principal Executive Offices)

(720) 262-7002

(Registrant’s telephone number)

Securities registered pursuant to Section 12(b) of the Act:

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Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes ☐ No ☒

The aggregate market value of registrant’s common equity held by non-affiliates of registrant on June 30, 2021, the last business day of the registrant’s most recently completed second fiscal quarter, was approximately $653.4 million, based upon the closing sale price of the common stock as reported on The Nasdaq Global Select Market.

As of January 31, 2022, there were 49,511,959 of the registrant’s ordinary shares outstanding.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

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This Annual Report on Form 10-K (Annual Report) contains forward-looking statements that involve risks and uncertainties. All statements other than statements of historical facts contained in this Annual Report, including statements regarding our future results of operations and financial position, business strategy, development plans, planned preclinical studies and clinical trials, future results of clinical trials, expected research and development costs, regulatory strategy, timing and likelihood of success, as well as plans and objectives of management for future operations, are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may”, “will”, “should”, “expects”, “intends”, “plans”, “anticipates”, “believes”, “estimates”, “predicts”, “potential”, “continue” or the negative of these terms or other comparable terminology. These forward-looking statements include, but are not limited to, statements about:

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• the ability of our preclinical studies and planned clinical trials to demonstrate safety and efficacy of our product candidates, and other positive results;

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• our ability to utilize our proprietary drug discovery platform to develop a pipeline of product candidates to address muscle disorders;

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• the timing, progress and results of preclinical studies and clinical trials for EDG-5506, product candidates in our EDG-5440 and EDG-002 programs, and other product candidates we may develop, including statements regarding the timing of initiation and completion of studies or trials and related preparatory work, the period during which the results of the studies or trials will become available, and our research and development programs;

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• the timing, scope and likelihood of regulatory filings and approvals, including timing of INDs and final FDA approval of EDG-5506, product candidates in our EDG-5440 and EDG-002 programs and any other future product candidates;

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• the timing, scope or likelihood of foreign regulatory filings and approvals;

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• our ability to develop and advance our current product candidates and programs into, and successfully complete, clinical studies;

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• our manufacturing, commercialization, and marketing capabilities and strategy;

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• our plans relating to commercializing our product candidates, if approved, including the geographic areas of focus and sales strategy;

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• the need to hire additional personnel and our ability to attract and retain such personnel;

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• the size of the market opportunity for our product candidates, including our estimates of the number of patients who suffer from the diseases we are targeting and our expectations regarding the implementation of newborn screening for muscular dystrophy;

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• our expectations regarding the approval and use of our product candidates in combination with other drugs;

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• our competitive position and the success of competing therapies that are or may become available;

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• our estimates of the number of patients that we will enroll in our clinical trials;

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• the beneficial characteristics, and the potential safety, efficacy and therapeutic effects of our product candidates;

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• our ability to obtain and maintain regulatory approval of our product candidates;

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• our plans relating to the further development of our product candidates, including additional indications we may pursue;

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• existing regulations and regulatory developments in the United States, Europe and other jurisdictions;

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• our expectations regarding the impact of the COVID-19 pandemic on our business;

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• our intellectual property position, including the scope of protection we are able to establish and maintain for intellectual property rights covering EDG-5506, product candidates in our EDG-5440 and EDG-002 programs, and other product candidates we may develop, including the extensions of existing patent terms where available, the validity of intellectual property rights held by third parties, and our ability not to infringe, misappropriate or otherwise violate any third-party intellectual property rights;

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• our continued reliance on third parties to conduct additional preclinical studies and planned clinical trials of our product candidates, and for the manufacture of our product candidates for preclinical studies and clinical trials;

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• our relationships with patient advocacy groups, key opinion leaders, regulators, the research community and payors;

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• our ability to obtain, and negotiate favorable terms of, any collaboration, licensing or other arrangements that may be necessary or desirable to develop, manufacture or commercialize our product candidates;

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• the pricing and reimbursement of EDG-5506, product candidates in our EDG-5440 and EDG-002 programs, and other product candidates we may develop, if approved;

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• the rate and degree of market acceptance and clinical utility of EDG-5506, product candidates in our EDG-5440 and EDG-002 programs, and other product candidates we may develop;

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• our estimates regarding expenses, future revenue, capital requirements and needs for additional financing;

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• our financial performance;

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• the period over which we estimate our existing cash and cash equivalents will be sufficient to fund our future operating expenses and capital expenditure requirements;

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• the impact of laws and regulations; and

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• our expectations regarding the period during which we will qualify as an emerging growth company under The Jumpstart Our Business Startups Act of 2012 and a smaller reporting company under the Securities Exchange Act of 1934, as amended.

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We have based these forward-looking statements largely on our current expectations and projections about our business, the industry in which we operate and financial trends that we believe may affect our business, financial condition, results of operations and prospects, and these forward-looking statements are not guarantees of future performance or development. These forward-looking statements speak only as of the date of this Annual Report and are subject to a number of risks, uncertainties and assumptions described in the section titled “Risk Factors” and elsewhere in this Annual Report. Because forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, you should not rely on these forward-looking statements as predictions of future events. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events or otherwise.

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In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this Annual Report and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and you are cautioned not to unduly rely upon these statements.

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PART I

Item 1. Business

Overview

Our vision is to improve the lives of patients and families suffering from rare muscle disorders by building the world’s leading muscle-focused, precision medicine company.

At Edgewise, patients are at the core of everything we do. We recognize that for patients with rare and debilitating diseases, every day without an effective treatment is a day too late and we are driven by this urgency to evolve disease knowledge with an aim to develop novel precision medicines for severe and rare disorders driven by muscle dysfunction. Our intimate knowledge of muscle biology and biophysics along with our ability to identify and design muscle specific precision small molecules have enabled us to rapidly advance our lead product candidate into clinical development while advancing our preclinical pipeline. From this foundation, we continue to build a leading, global biopharmaceutical company focused on rare diseases involving muscle in order to develop transformative precision medicines to treat and possibly cure these disorders.

In less than five years, we have matured into a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of innovative treatments for severe, rare muscle disorders for which there is significant unmet medical need. Guided by our holistic drug discovery approach to targeting the muscle as an organ, we have combined our foundational expertise in muscle biology and small molecule engineering to build our proprietary, muscle-focused drug discovery platform. Our platform utilizes custom-built high throughput and translatable systems that measure integrated muscle function in whole organ extracts to identify small molecule precision medicines regulating key proteins in muscle tissue, initially focused on addressing rare neuromuscular and cardiac diseases.

Since our inception in 2017, our precision medicine muscle platform has generated several programs to address a variety of muscle disorders. We are advancing one clinical-stage program and two preclinical programs.

Our lead product candidate, EDG-5506, is an orally administered allosteric, selective, fast myofiber (type II) myosin small molecule inhibitor designed to address the root cause of dystrophinopathies including Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD). Both of these disorders are rare and often debilitating diseases, and we estimate that in the United States there are approximately 12,000 to 15,000 DMD patients and 4,000 to 5,000 BMD patients. As a selective fast myosin inhibitor, EDG-5506 presents a novel mechanism of action designed to selectively limit injurious stress caused by lack of dystrophin by moderating fast skeletal muscle myosin force development and thereby compensating for the absence of functional dystrophin. Our preclinical data with EDG-5506 in animal models of muscular dystrophy demonstrated that selective regulation of fast (type II) myofiber contraction protected muscle from damage, reduced systemic fibrosis and improved measures of muscle function including strength and ability to engage in physical activities, which we believe may provide evidence of a disease modifying effect. A unique observation from our preclinical work is that EDG-5506 led to pronounced prevention of cardiac fibrosis. This is a highly relevant finding, particularly if replicated in clinical observations, since cardiac myopathy is a major driver of mortality in both DMD and BMD.

EDG-5506 was evaluated in a Phase 1 clinical trial designed to assess the safety, tolerability and pharmacokinetics (PK) of EDG-5506 in adult healthy volunteers (HVs) (Phase 1a) and in adults with BMD (Phase 1b). Our Phase 1a data in HVs demonstrated that EDG-5506 was generally well-tolerated and amenable to daily dosing. Our Phase 1b data in

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BMD patients demonstrated proof of concept by showing a significant reduction in key biomarkers of muscle damage. We believe EDG-5506 has potential therapeutic utility as either a standalone or combination therapy for patients suffering from rare muscular dystrophies, if approved.

We also intend to advance two other muscle-focused precision medicines into clinical development. Our second program, EDG-5440, is a next generation myosin ATPase modulator designed to target skeletal muscle in a specific set of rare neuromuscular diseases. Our third program, EDG-002, focuses on identification of novel mechanism cardiac modulators. We are initially pursuing a new target for inherited hypertrophic cardiomyopathy (HCM) in addition to exploring the potential of this novel mechanism across other cardiac disorders. Our preliminary preclinical studies offer evidence that our EDG-002 program has the potential to yield molecules that could become a new therapeutic option for the treatment of HCM as well as other cardiac disorders. We anticipate candidate selection of a novel cardiac modulator for inherited hypertrophic cardiomyopathy from our EDG-002 cardiac muscle program in the second half of 2022. We believe our programs also offer substantial opportunities for us to expand into related rare diseases for which there are limited or no approved treatments. We are currently focusing on the development of EDG-5506 and anticipate advancing our preclinical programs into the next stage of development in the near term. While EDG-5440 and EDG-002 are important preclinical programs to us, we have not needed to devote significant financial resources to these programs to date since they are still in preclinical development and have not yet advanced into clinical trials.

Our Pipeline

Using our proprietary drug discovery platform, we are developing a pipeline of precision medicine product candidates that target key muscle proteins and modulators to address a broad array of genetically defined muscle disorders. We have retained global development and commercialization rights to all of our programs. Our current pipeline is summarized below.

Our History and Team

We have assembled an experienced and highly motivated management team with a strong track record in the biotechnology and pharmaceutical industry. We are focused on building a leading, patient-centric, fully integrated global rare disease company. Members of our team have extensive expertise in muscle disorders, small molecule drug discovery and development and patient advocacy with proven track records at organizations including Alexion, Amgen, Array Biopharma, Catabasis, Cytokinetics, Genzyme, GlaxoSmithKline, Parent Project Muscular Dystrophy, Pfizer and Biogen.

We were co-founded in 2017 by our Chief Scientific Officer, Alan Russell, Ph.D., Peter Thompson, M.D., who is currently a Partner at OrbiMed and Badreddin Edris, Ph.D., who is currently the Chief Operating Officer at SpringWorks Therapeutics, Inc. through funding provided by OrbiMed. Dr. Russell has extensive experience in developing novel therapeutics for diseases involving skeletal muscle, having previously served as Vice President and Head of the Muscle

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Metabolism Discovery Performance Unit at GlaxoSmithKline from 2010 to 2017 and as Associate Director, Muscle Biology and Therapeutics at Cytokinetics from 2002 to 2010, where he was the co-inventor of tirasemtiv and reldesemtiv, direct muscle sensitizers for Amyotrophic Lateral Sclerosis (ALS).

We are led by Kevin Koch, Ph.D., who has been in the life science industry for over 30 years with a focus on drug discovery, translational medicine and clinical development. Dr. Koch previously served as the Senior Vice President of Drug Discovery, Chemical and Molecular Therapeutics at Biogen where he managed global drug discovery and biomarker development. Dr. Koch was a co-founder of Array BioPharma, serving as President, Chief Scientific Officer and Board member from the company’s inception in 1998 to 2013. While there, he built a fully integrated research and development team that oversaw the invention of over 20 clinical development candidates across multiple therapeutic areas, several of which are now marketed medicines. Prior to Array, Dr. Koch held senior positions at Amgen and Pfizer Central Research. Additionally, our Chief Business Officer, Behrad Derakhshan, Ph.D., our Chief Financial Officer, R. Michael Carruthers, our Chief Medical Officer, Joanne Donovan, M.D., Ph.D., and our General Counsel, John Moore, each have more than 15 years of experience in drug research, clinical development, regulatory affairs, manufacturing, business development and commercialization of novel medicines, particularly in a range of devastating rare diseases.

Further, we have built a scientific advisory board with experts in the field of muscle diseases affecting both children and adults. Our scientific advisors include researchers who publish widely-cited articles on the skeletal and cardiac aspects of muscular dystrophy as well as on inherited forms of cardiovascular disease. Moreover, some of our advisors lead clinical units at some of the leading muscle disease centers in the United States and are actively involved in our drug development process and programs.

As a private company, we raised $160.7 million from leading institutional investors which include OrbiMed, Novo Holdings A/S, U.S. Venture Partners (USVP), Deerfield Management, Viking Global Investors, New Leaf Ventures, Janus Henderson Investors, RA Capital Management, Cormorant Asset Management, Logos Capital, Wellington Management, CureDuchenne Ventures and an undisclosed institutional investor. We also raised $186.1 million in net proceeds from our initial public offering in March 2021.

Our Strategy

Our vision is to improve the lives of patients and families suffering from rare muscle disorders by building the world’s leading muscle-focused, precision medicine company. Key components of our strategy to achieve this vision include:

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Our Proprietary Drug Discovery Platform

Our precision medicine muscle platform enables the discovery and development of therapies with disease modifying potential

Muscle is the most abundant tissue in the body. Skeletal muscle alone accounts for 40% to 50% of body mass. In addition to being critical for the regulation of contraction driving the production of force, skeletal muscle also serves as an endocrine organ regulating metabolism and neuronal activities as well as the production of systemic mediators of growth, inflammation and regeneration. Skeletal muscle’s physiological role impacts multiple organ systems and is a complex mix of redundancies and feedback loops that require an intricate knowledge of muscle at a whole-body level in order to successfully develop drugs for muscle diseases.

We believe that our approach can overcome many of the obstacles facing skeletal and cardiac muscle drug discovery and development that have resulted in a lack of disease modifying therapies for inherited muscle disorders. Our

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proprietary drug discovery platform leverages our expertise in the following areas to facilitate the efficient discovery of novel therapies for neglected muscle disorders:

We have coupled our deep understanding of the complexities of muscle physiology with cutting-edge drug discovery expertise to create a new generation of small molecule precision medicines for the treatment of severe and debilitating muscle conditions arising from defects in the skeletal and cardiac muscle systems.

Our Programs

EDG-5506 for Treatment of Patients with DMD and BMD

Overview

We are developing a myofiber stabilizing therapy that represents a novel mechanistic approach designed to address the root cause of dystrophin deficient muscular dystrophies. EDG-5506, our most advanced product candidate, is an orally administered, allosteric, selective, fast myofiber (type II) myosin modulator that is designed to be inactive against slow myofiber (type I) myosin present in both skeletal muscle and the heart. Our preclinical data for EDG-5506 in animal models with muscular dystrophy demonstrated that selective regulation of fast (type II) myofiber contraction protected muscle from damage, decreased systemic fibrosis and improved measures of muscle function including strength and physical activities. EDG-5506 was evaluated in a Phase 1 clinical trial designed to assess the safety, tolerability and pharmacokinetics (PK) of EDG-5506 in adult HVs (Phase 1a) and in adults with BMD (Phase 1b). Our Phase 1a data in HVs demonstrated that EDG-5506 was generally well-tolerated and amenable to daily dosing. Our Phase 1b data in BMD patients demonstrated proof of concept by showing a significant reduction in key biomarkers of muscle damage. Type II myosin modulation prevents muscle damage via a blockade of the biophysical stress response during normal muscle contractile activity thus stabilizing the muscle and protecting the muscle from damage. As such, it is a potentially complementary approach to dystrophin replacement strategies which also stabilize muscle through the re-expression of truncated dystrophin.

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Loss of dystrophin in DMD causes myofiber membrane stress associated myofiber damage when muscles contract. By enhancing muscle stability and decreasing muscle damage, we believe EDG-5506 can potentially improve outcomes across a broader range of DMD patients, vis-à-vis dystrophin replacement gene therapies, when used as a single agent. EDG-5506 may also provide a synergistic or additive effect in combination with available therapies and therapies currently in development, including dystrophin replacement gene therapies.

Disease Background

DMD and BMD are marked by an absence (DMD) or truncation (BMD) of the dystrophin protein resulting from mutations in the dystrophin gene. Approximately 65% of mutations of the DMD gene are deletions of one or several exons, the coding sections of an RNA transcript, or the DNA encoding it, that are ultimately translated into dystrophin protein. Approximately 10% of mutations are duplications of exons and approximately 15% are single point mutations. Depending on whether the specific mutations in the DMD gene maintain the reading frame, dystrophin will or will not be present such that in-frame mutations result in truncated dystrophin and BMD phenotype while out-of-frame or early stop mutations result in no dystrophin and DMD phenotype. Dystrophin provides a structural link between the contractile elements (actin and myosin filaments) of the sarcomere and the basement membrane of the myofibers (muscle cell). Absence of dystrophin leads to myofiber membrane stress during normal sarcomere contraction resulting in an influx of calcium through the myofiber membrane resulting in hypercontraction, irreversible sarcomeric collapse and myofiber degeneration. Myofiber regeneration is possible but appears to fail over time as DMD/BMD patients get older and the muscle stem cell (satellite cell) machinery is exhausted. Fatty and fibrotic tissue then accumulate and replace normal muscle contractile tissue thus compromising function such that patients have progressive and permanent muscle weakness. Circumventing the loss of dystrophin’s structural function may prevent myofiber damage and preserve skeletal muscle function in DMD/BMD.

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Illustrative mutations in the dystrophin gene and their impact on dystrophin production

DMD and BMD are classified as orphan diseases in the United States and Europe. We estimate that DMD occurs in approximately one in every 3,500 to 5,000 live male births and that the patient population is approximately 12,000 to 15,000 in the United States and approximately 25,000 in Europe. BMD has a much lower incidence of approximately 1 in every 18,450 live male births. We estimate there are between 4,000 and 5,000 patients with BMD in the United States, with similar numbers estimated in Europe.

Duchenne Muscular Dystrophy

DMD is a monogenic, X-linked muscle disease secondary to mutations in the dystrophin gene with mortality at a median age of approximately 30 years. DMD pathophysiology is driven by the absence of dystrophin which normally functions as a structural protein in muscle. Once myofiber degeneration is initiated, regeneration typically follows. However, in DMD, the regenerative process appears to fail over time as patients get older leading to fibrosis and progressive loss of muscle function with severe disability and early death.

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Fibrotic tissue and fatty and inflammatory infiltrate replace myofibers in dystrophic muscle

DMD predominantly occurs in boys and typically presents at three to five years of age through observation of missed functional milestones and Gowers’ sign (a finding from a medical examination that identifies weakness of the proximal hip muscles) due to symmetrical, proximal weakness in selective muscle groups in combination with calf hypertrophy and creatine kinase (CK), a plasma protein biomarker linked to muscle damage, >10 times normal. Systemically circulating biomarkers of myofiber degeneration, such as CK and troponin I are significantly elevated from birth with maximal levels at approximately two years of age. Levels decrease with time, presumably as muscle mass is lost.

Loss of Ambulation

Clinical manifestations occur in a predictable pattern of loss of functional milestones: ability to rise from the floor, ability to climb stairs, ability to walk, upper limb function and respiratory function. Typically, boys begin to lose the ability to rise from the floor between the ages of seven and nine, with the loss of the ability to climb stairs shortly thereafter and loss of ambulation often as early as 10 years of age. Nearly all boys with DMD will require the use of a wheelchair by the time they are young teens.

Impacts on Upper Limb Function

Even while ambulant, loss of upper limb function begins around age eight and continues to decline, with DMD patients struggling to raise their arms above their head in their early teens, which impairs daily activities such as getting clothes on over their head independently or reaching for an object overhead. Loss of upper limb muscle function continues with disease progression, and in their teens patients may lose the ability to independently lift objects to their face, self-feed, use a phone/computer or control a motorized wheelchair. The serious disability due to the loss of key upper limb functions dramatically impacts activities of daily living in DMD patients still in their early teenage years.

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Effects on Respiratory Function

Respiratory function decline, as measured by spirometry, occurs by age 12, and is generally relentlessly progressive. Progressive respiratory muscle impairment leads to cardiovascular issues and poor respiratory secretion clearance, hypoventilation and pulmonary infections putting patients at increased risk of hospitalization and need of continuous ventilatory support.

Cardiac Complications

The loss of dystrophin leads to cardiovascular disease in most DMD patients. These patients typically develop cardiac features between the ages of 10 and 15 years. The cardiac disease is generally progressive and as cardiac function worsens, patients present with dilated cardiomyopathy (DCM) and clinical heart failure. Since DMD patients in their teens are non-ambulatory, identification of traditional heart failure symptoms is challenging due to relative physical inactivity. Patients with DMD and DCM often report a history of chest pain, palpitations, dyspnea, dizziness, and syncope. Improved care in other specialties, especially respiratory support, has reduced morbidity related to other aspects of DMD but elevated cardiomyopathy as a key driver of mortality.

The Real-World Burden of DMD

Family members and caregivers view DMD not just as a fatal disorder, but a disorder characterized by repeated “little deaths”. Each loss of a functional milestone is excruciating as it represents not a clinical data point to track progression, but one more conversation a parent must have with their child, explaining why they are not allowed to play on the soccer team with their peers, or if they will ever be able to hop, or skip or go to the prom. As the disease progresses, boys lose their ability to toilet, to feed, to dress, to take a bath, all the things that represent independence in a young man’s life. And these losses lead to more symptoms: contractions, pressure sores, constipation, numbness in legs and feet, and scoliosis.

Parents and caregivers devote much of their resources and time to caring for their sons with DMD. All told, these “little deaths” create a family disease with lifelong impacts for all. Perhaps the hardest moment in the life of a DMD family comes in deciding when to tell their young boy that he has this fatal disease.

DMD represents a significant societal and economic burden. The economic burden associated with hospital admissions, medication, frequent doctor visits and investment in assistive devices, as well as indirect costs related to productivity losses for the caregivers and costs due to pain, anxiety and social handicap are estimated at $278 million in Germany, $154 million in Italy, $200 million in the United Kingdom, and $1.2 billion in the United States annually. The impact on parents of children with DMD is also quite dramatic and often requires them to stop working altogether to care for their children who progressively require more help with everyday tasks.

Becker Muscular Dystrophy

In contrast to DMD, BMD results from an in-frame mutation in the dystrophin gene yielding a partially functional protein. BMD patients often are diagnosed at a later age in childhood (approximately 11 years old) with similar symptoms to DMD of symmetrical, proximal limb weakness, notable in the quadriceps, with calf hypertrophy and elevated CK. Progression can be variable and often slower than DMD with mean age of loss of ambulation in the late 30’s and a select few remaining ambulatory into their 50’s or beyond. While certain BMD patients with have a mild or minimal lower limb weakness and remain relatively stable over time as measured by the North Star Ambulatory Assessment (NSAA), other BMD patients have a typical BMD disease course with progressive loss of lower limb function, measurable with the NSAA over a 12-month period with the majority losing ambulation at some point in their lifetime. Compared to DMD, BMD patients’ skeletal myopathy occurs later in childhood, and they maintain ambulation through age 16. However, BMD patients develop cardiomyopathy at a similar mean age to DMD (14.4 years DMD and 14.6 years BMD). BMD patients may experience worse cardiomyopathy symptoms than DMD patients because BMD patients are ambulatory longer and can perform more motor function such that symptoms of cardiomyopathy may be more readily detectable with exertion, while DMD patients will uniformly be non-ambulatory in the teenage years. BMD patients with cardiac failure commonly have mean life expectancy of 40 to 65 years old.

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Comparison of DMD and BMD

Current Treatments for DMD and BMD and their Limitations

There is no cure for DMD and for most patients, there are no satisfactory symptomatic or disease-modifying treatments. Standard of care in DMD includes physical therapy to maintain mobility and prevent contractures, bracing and surgery for scoliosis, medical treatment for cardiomyopathy and heart failure, respiratory therapies for ventilatory impairment, psychosocial management to support behavior and learning, glucocorticoid regimens and exon skipping therapies.

Glucocorticoids

The chronic and ongoing damage state seen in DMD is one of the targets of glucocorticoids. Glucocorticoid treatment with either prednisone or EMFLAZA (deflazacort), the current standard-of-care for DMD, has been shown to temporarily improve muscle strength, prolong the period of ambulation and slow the functional decline, including upper limb and respiratory function, characteristic of the disease. The modest chronic benefit of steroids, weighed against the risks, limits utilization to a relatively narrow age range since initiation of treatment prior to age four is not recommended and treatment is discontinued after loss of ambulation. Sustained glucocorticoid dosing in young DMD patients is associated with side effects including weight gain which could lead to obesity, Cushingoid features, excessive growth of hair on the body, adverse behavior changes, growth impairment, delayed puberty, immune suppression, adrenal suppression, fractures and cataracts.

Exon Skipping Therapies

There are four FDA conditionally-approved antisense oligonucleotide (AO) therapies, each limited to a specific mutation and a subset of the patient population: EXONDYS 51 (eteplirsen), approved for the treatment of DMD patients amenable to Exon 51 skipping, AMONDYS 45 (casimersen), approved for the treatment of DMD patients amenable to Exon 45 skipping and VYONDYS 53 (golodirsen) and VILTEPSO (vitolarsen), both approved for the treatment of DMD patients amenable to Exon 53 skipping. An aggregate of approximately 29% of DMD patients are amenable to treatment with these therapies. The FDA labels for all four drugs state that a clinical benefit has not yet been established and that continued approval may be contingent upon the verification of such clinical benefit in confirmatory clinical trials. In addition, Translarna® (ataluren), a small molecule intended to promote ribosomal read-through to overcome the

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nonsense (stop) pathogenic mutations in DMD, was granted approval by Iceland, Liechtenstein, Norway, Israel, South Korea and conditional approval granted by the EMA within the European Union (EU) Member States to treat DMD caused by a nonsense variant in ambulatory patients aged five years and older. However, Phase 3 trials have not confirmed clinical efficacy and Translarna® is not approved for treating DMD in the United States. All five of these approved products seek to address DMD through exon skipping, but we believe their limited observed efficacy is due to poor muscle penetration and biodistribution. EXONDYS 51, VYONDYS 53 and AMONDYS 45, in addition to requiring weekly intravenous infusions, have demonstrated a less than 1% mean increase in dystrophin in clinical trials, which we believe is a function of poor and inefficient muscle transduction. Moreover, a significant limitation of exon skipping approaches for DMD is the fact that each AO has been developed for skipping of a specific exon and their use is limited to a sub-set of mutations and hence only used in a subpopulation of DMD patients (e.g., exon 51 skipping is feasible in only up to 13% of all DMD patients). Other companies, such as Avidity Biosciences, Inc., Dyne Therapeutics, Inc. and Entrada Therapeutics, Inc. are working to improve on the muscle delivery aspects of AOs but suffer from the same limitations of first-generation AOs in that they will be restricted to specific, genetically defined DMD subsets. Data suggests that with all exon skipping approaches, the best treatment outcome that DMD patients can expect is a Becker-like disease phenotype.

Gene Therapy for DMD

The lack of dystrophin in patients with DMD has long been a target for adeno-associated virus (AAV) based gene therapy but the limited packaging capacity of AAV vectors (4.7 kilo-bases) and the large size of the dystrophin gene (2.2 mega-bases, >400 times bigger than the AAV vector itself) remain a challenge to delivering a fully functional dystrophin protein to patients. As such, the field has shifted to the use of miniaturized dystrophin or microdystrophin expression cassettes that yield a smaller, less complete version of the dystrophin protein as the therapeutic payload; current constructs express truncated dystrophin proteins that are 20% to 30% of the normal size of the full-length dystrophin protein.

Recently, a number of gene therapies designed to produce a minidystrophin or microdystrophin have progressed into clinical development. However, it is estimated that between 20% to 60% of patients have antibodies against AAV due to naturally acquired infections. These antibodies prevent them from receiving AAV gene therapy due to pre-existing AAV immunity to the capsid, the protein shell of the virus used for delivery, which can lead to severe and potentially deadly immune response. The duration of activity and utility/safety of these approaches in older patients is also an open question.

The question around whether gene expression can persist lifelong after a single vector administration is an area of debate across many disorders including dystrophinopathies. The long-term persistence of transgene expression is exacerbated by preexisting or recall immune responses to the AAV vector capsid and/or to the transgene product itself, which can interfere with therapeutic efficacy. Furthermore, this limited durability is problematic because re-administration after the first dose is currently not possible.

The current gene therapies for DMD also have strict age cut offs for patient eligibility. Both Pfizer and Sarepta Therapeutics have limited their Phase 3 patient enrollment to children aged four to seven years old, thus excluding a significant proportion of DMD children and adolescents. Due to weight-based dosing regimens, for older patients in particular, who are generally heavier, scaling up to produce enough AAV-based viral vector genomic particles or vector genomes, remains a potentially significant encumbrance and even if feasible, raises concerns relating to safety of administering higher viral loads to patients. It is important to note that multiple clinical trials have reported significant adverse events associated with systemic administration of higher doses of AAV to treat muscle diseases. Vector dilution will also be an important consideration that we believe will limit the current class of AAV-based gene therapies to the age groups studied in their respective trials. We anticipate that treatment with AAVs engineered to deliver mini or micro dystrophin in younger patients will lead to a dilution of the transcript with age and normal growth; thus, children are unlikely to express dystrophin as their disease progresses and they become symptomatic and non-ambulatory.

Even if minidystrophin or microdystrophin gene therapy for DMD is successful, we believe that the best potential therapeutic outcome is inducing a Becker-like phenotype where patients would still have significant residual skeletal

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muscle impairment and will thus continue to have a high degree of unmet need. What is clear is that gene therapies currently in development for DMD do not represent a cure for the disease.

We believe that each of the therapeutic approaches outlined above currently have significant limitations, and that there continues to be a high unmet medical need for new disease-modifying therapies for the treatment of patients with DMD. Moreover, with the biotechnology and pharmaceutical industry’s almost exclusive focus on DMD, little attention has been paid to drug development in BMD where there are no approved therapies for patients.

Our Solution: EDG-5506

Since the cloning of the dystrophin gene in 1986, researchers, clinicians, and pharmaceutical and biotechnology companies have worked relentlessly to advance the scientific and clinical understanding of DMD to accelerate finding a cure. At Edgewise, we have built on top of this foundational work through applying our understanding of muscle physiology to develop EDG-5506, a molecule that we believe has the potential to change the devastating course of DMD. While many of our competitors are targeting dystrophin, our orthogonal approach is focused on protecting muscle damage induced by contractions from activities of daily living.

EDG-5506 is an orally administered, allosteric, selective, fast myofiber (type II) myosin inhibitor that is designed to be inactive against slow myofiber (type I) myosin present in both skeletal muscle and the heart. We believe EDG-5506 has the potential to overcome many of the obstacles facing other therapeutics in development for the treatment of dystrophinopathies based on the following key characteristics:

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We believe these characteristics uniquely position EDG-5506 as a potentially new standard of care for patients with DMD and BMD, either as a standalone or in combination with other therapies.

An illustration of EDG-5506’s novel mechanism of action

Background and Rationale of Our Approach

Human skeletal muscle consists of three fiber types, “slow” type I and “fast” types IIa or IIx/d, defined by the specific myosin isoform that they express. Studies have shown that fast muscle fibers are more susceptible to injury in both healthy individuals and in DMD. Histological studies of young DMD patients document distinct fiber-type imbalances in the co-localization of fast and embryonic myosin, a marker of regenerating muscle fibers. Similar observations have also been made in all known mammalian models of DMD. The control and coordination of these fiber populations is a complex process, designed to maintain physical performance even under conditions of extreme environmental and metabolic stress. Under normal conditions, skeletal muscle contractile demand is much lower than at the maximal output. Maximal activation of muscle is painful, damaging and unproductive to sustained function. We have taken advantage of this flexibility to explore an alternative therapeutic strategy to protect susceptible type II skeletal muscle fibers.

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Properties of skeletal muscle fiber types: slow (type I) and fast (type II) fibers

When muscle fibers undergo damage, they release internal proteins such as CK (A) and troponin into the blood. One of the troponin subunits, TnI has a different isoform for each type of striated muscle (fast, slow and cardiac) and can be used to explore the fiber-specific source of these proteins. We evaluated DMD and BMD patient plasma samples using high specificity assays for fast and slow myofiber TnI and observed that fast myofiber TnI (TnI2) plasma levels (B) are higher than slow myofiber TnI (TnI1) levels (C), suggesting that fast myofibers are more susceptible to loss of dystrophin function during muscle contraction. Conversely, we observed that HVs had virtually no leak from fast muscles (B).

Biomarkers of fast fiber turnover are elevated in BMD and DMD

Using high-throughput screens of type II fast skeletal muscle myofibrils, we identified a novel structural class of myosin ATPase inhibitors that we optimized for potency, selectivity, physiochemical properties and PK, leading to the synthesis of EDG-5506. EDG-5506 acts to protect dystrophic muscle from breakdown by modulating contraction in susceptible fast muscle fibers. Our goal is to reduce contraction of susceptible muscle fibers by five to twenty percent.

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We believe that the reduced muscle breakdown will result in potential preservation or enhancement of physical function in DMD patients.

Regulating myofiber contraction in DMD patients is not a novel concept. Dantrolene, an inhibitor of the ryanodine receptor that modulates both fast and slow skeletal myofiber contraction was used in a small clinical trial in 1991 in DMD patients. Treatment was associated with a 3-fold reduction in CK and a trend favoring attenuation of decreases in function. While it is approved for treatment of malignant hyperthermia and chronic spasticity, it is not approved or used in DMD. Chronic treatment with dantrolene has been associated with drowsiness and the potentially serious side effect of idiosyncratic fatal hepatotoxicity, limiting its broad use. We anticipate that the high potency, fast fiber targeting and low projected dose of EDG-5506 will limit unwanted side effects. Moreover, stabilization of the sarcomere for the most damage-susceptible muscle fibers in DMD with EDG-5506 potentially provides greater muscle protection than inhibition of calcium release via the ryanodine receptor.

Another corollary to our approach of selectively targeting type II fast skeletal muscle myofibrils with EDG-5506 is mavacamten (MYK-461), a selective allosteric inhibitor of cardiac type I myosin ATPase. Mavacamten is currently under review by the FDA for possible approval for HCM, a disorder characterized by excessive contractility and impaired relaxation of cardiomyocytes. Through selective targeting of cardiac type I myosin ATPase, mavacamten is designed to reduce cardiac muscle hypercontractility in HCM. Mavacamten’s mechanism of action further validates selective allosteric regulation of myofibers as a viable therapeutic approach to treating various muscle disorders.

Interestingly, nature has carried out one of the more critical experiments to help us understand the impact of inhibiting fast fiber myosin selectively. There are several reports describing the human phenotype of people born with genetic loss of function (LOF) of the myosin heavy chain 2 gene, MYH2. Muscle biopsies in these patients show a heavy skewing towards slow type I muscle fibers as a result of complete lack of fast type II muscle fibers. These patients have mild, proximal muscle weakness with ocular muscle involvement but remain ambulatory throughout life. The observations in these patients demonstrate an ability of the body to maintain function despite complete loss of one myofiber type. Given that our goal is to only partially inhibit type II fast skeletal muscle myofibrils in order to modulate force development and not completely inhibit them, as is the case in the LOF patients, it is our belief that selective fast fiber regulation with EDG-5506 will likely be well-tolerated and may protect dystrophic myofibers from degeneration and subsequently improve and/or preserve physical function.

Preclinical Data

In Vitro Biochemical and Single Muscle Fiber Assays

The inhibitory activity and specificity of EDG-5506 was measured using skeletal myofibril preparations isolated from muscle sources with uniform myosin composition. We observed that EDG-5506 inhibited fast myofibril ATPase from rabbit psoas muscle with an IC50 of 0.2 µM (A). Myosin inhibitory activity was further supported by measuring the actin-activated ATPase of purified S1 myosin motor sub-fragment. We observed that EDG-5506 inhibited the enzymatic activity of fast, but not cardiac or the more unrelated smooth muscle S1, with an IC50 of 0.11 µM and >100 µM, respectively (B and C). We also observed that EDG-5506 selectively reduced contraction in fast skeletal muscle fibers with an IC50 of 0.7 µM (D). In contrast, maximal inhibitory concentrations of EDG-5506 had no observed effect on slow skeletal or cardiac muscle fibers (E and F). In ex vivo assays using mouse muscle, we observed that EDG-5506 reduced contraction in a concentration and time-dependent manner, completely inhibiting fast extensor digitorum longus (EDL) muscle but only partially inhibiting mixed fast/slow soleus muscle.

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EDG-5506 selectively inhibited fast skeletal muscle ATPase and contraction

Protection of Dystrophic Skeletal Muscle from Contraction-induced Functional Decline

The inhibitory activity of EDG-5506 in live skeletal muscle ex vivo was measured in wild type (WT) mouse EDL muscle, a predominantly fast skeletal muscle in the hindlimb. We observed that the addition of EDG-5506 to isolated muscle resulted in concentration- and time-dependent decreases in maximal force (A). EDL muscles from dystrophic mdx mice exhibited enhanced force run-down with eccentric (lengthening) contraction. We also observed that the addition of 5 µM EDG-5506 to mdx EDL muscle for 60 minutes (enough to decrease pre-injury maximal force by 50%) decreased peak force decline closer to that observed in WT mouse muscle (B). Protection with EDG-5506 exhibited a concentration dependent response with 50% of maximal protection at approximately 1 µM, associated with an approximately 10% decrease in force at the time of the injury (C).

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EDG-5506 protected dystrophic skeletal muscle from contraction-induced functional decline ex vivo

In situ muscle tests were next performed on intact mdx mouse TA muscle, with contraction elicited via sciatic nerve stimulation and force measured from a tendon at the ankle of the mouse under anesthesia. In this model, contracting muscle is rapidly lengthened, resulting in excessive stress that causes an amplified decrease in the ability of the muscle to contract after the injury in mdx but not normal mice. We observed that oral doses of EDG-5506 caused dose-dependent decreases in muscle force prior to lengthening injury (A). After lengthening injury, we observed that EDG-5506 prevented exaggerated force deficits, returning the injury response in mdx mice to that of a normal mouse (B). Importantly, we observed that full protection of the muscle was possible with only small decreases in force prior to injury (<10% — compare force decrease in (A) with protection in (B)).

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EDG-5506 protected dystrophic skeletal muscle from contraction-induced functional decline in situ

Protection of Dystrophic Skeletal Muscle from membrane disruption

In conjunction with exaggerated force deficits, exercise of dystrophic skeletal muscle triggers membrane disruption that results in edema, entry of extracellular calcium ions and necrosis. Fluid entry was visualized in mdx mouse muscle ex vivo and in vivo. Ex vivo imaging was performed by incubating mdx extensor digitorum longus (EDL) muscle with procion orange, a membrane impermeable dye. We observed that lengthening contraction of muscle led to increased uptake of the dye, which was visualized with immunofluorescence (A). We also observed that preincubation of muscles with EDG-5506 resulted in a concentration-dependent decrease in procion-positive fibers (B).

Muscle membrane leak was separately visualized in vivo by intravenous injection of Evans blue dye (EBD), which is only taken up by disrupted muscle fibers and marks them with a blue color. Mdx mice were administered vehicle or EDG-5506 daily for three weeks before EBD injection. Mice were then sacrificed 24 hours later, and blue fibers visualized after removal of the skin (C). We observed that EDG-5506 dramatically lowered the appearance of blue muscle fibers (examples marked with red arrows), close to that observed in healthy normal mice. We believe these observations further support EDG-5506’s ability to protect muscles from membrane disruption and edema.

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EDG-5506 reduced muscle membrane disruption in mdx mice

Protection of dystrophic skeletal muscle from exercise-induced injury

Exercise was next used to induce exaggerated muscle injury in mdx mice. Exercise in mdx mice yields membrane injury which causes muscle proteins, including CK, to leak from muscle into the circulation. Mdx mice were administered a single dose of vehicle or EDG-5506 and were physically challenged with a grip strength test device four hours later. We observed that EDG-5506 had no detrimental effect on grip strength performance (A)  but that circulating CK activity after the exercise was significantly lower than that shown in disease controls (B). This study demonstrated that therapeutic muscle protection in vivo is possible without inhibiting myosin to a level that decreases strength. It is worth noting that this type of single-dose challenge experiment was not expected to demonstrate strength improvements but instead was used as a strength challenge to elicit muscle injury.

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EDG-5506 protected muscle from exercise-induced injury in mdx mice

Improvements in strength and diaphragm fibrosis in mdx mice after eight weeks oral administration of EDG-5506

Longer term effects of EDG-5506 were assessed in young mdx mice after eight weeks of administration. EDG-5506 treated mice exhibited higher grip strength compared to vehicle treated mice (A). At the end of the study, continued muscle protection was observed with a rotarod exercise challenge. There was no observed difference in rotarod performance (B), but CK was observed to be lower in the treated groups compared to vehicle, consistent with single-dose results (C). While DMD patients exhibit extensive muscle fibrosis with age, collagen accumulation in mdx mice is generally limited to the diaphragm. Histological examination of the diaphragm using a collagen stain (picrosirius red) revealed lower staining in EDG-5506 treated mice (example images D, calculated area E).

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EDG-5506 improved strength and diaphragm fibrosis after 8 weeks treatment of dystrophic mdx mice

Improvements in fibrosis, cardiac hypertrophy and kyphosis in the DBA/2J mdx mouse model of DMD

Unlike DMD patients, the dystrophin-deficient mdx mouse on the C57BL/10 genetic background (B10.mdx) is mildly affected by disease with limited muscle fibrosis. A more severe muscle disease is observed when the mdx mutation is crossed onto the DBA/2J genetic background (D2.mdx). This model exhibits greater muscle damage, impaired muscle regeneration, muscle wasting, and exacerbated progression of intramuscular fibrosis than age matched B10.mdx mice. Given that the DBA/2J mdx mouse phenotype better recapitulates characteristics of the human disease, we evaluated the effect of EDG-5506 on skeletal muscle fibrosis in this mouse model.

We observed that twelve weeks EDG-5506 dosing via incorporated chow at 50 ppm (roughly equivalent to 1 mg/kg per day by oral administration) in DBA/2J mdx mice starting at five weeks old reduced fibrosis in anterior tibialis (TA) muscle and diaphragm muscles (A, B) with a trend towards lower fibrosis in the left ventricle of the heart (C).

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EDG-5506 reduced muscle fibrosis in DBA/2J mdx mice after 12 weeks treatment

Unexpected trends in the reduction of cardiac fibrosis led us to examine DBA/2J mdx mice in two studies after longer term (12 to 15 months) dosing. At the end of the study in 15-month-old mice, we performed a whole-body examination of musculoskeletal anatomy after removing the skin in euthanized mice. Skeletal muscles were noticeably smaller in the fore and hindlimbs of DBA/2J mdx mice and kyphosis (spinal curvature) was visible when compared to control DBA 2/J mice (blue arrows). We observed that treatment with EDG-5506 for 14 months dramatically prevented muscle loss and kyphosis (green arrows). This observation is particularly meaningful as scoliosis can be observed in older DMD patients following loss of ambulation. Scoliosis coupled with diaphragm fibrosis drives respiratory failure and is a significant cause of death in DMD patients.

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EDG-5506 dramatically prevents kyphosis in DBA/2J mdx mice

Consistent with shorter term studies, we also observed significant reductions in gastrocnemius muscle fibrosis along with significant improvements in muscle weight (A). Diaphragm fibrosis was not observed to be lowered with longer term treatment (B), but the incidence of lipid vacuole deposition (red arrows) was observed to be significantly lowered with treatment. Fatty tissue deposition is common in older DMD patients, in conjunction with fibrosis.

EDG-5506 improved skeletal muscle fibrosis and atrophy in DBA/2J mdx long-term studies

Improvements in cardiac fibrosis and hypertrophy in DBA/2J mdx long-term studies

Longer term dosing of DBA/2J mdx mice also demonstrated lower cardiac fibrosis compared to vehicle controls in both long term studies (A, B). We also observed a reduction in the incidence of cardiac hypertrophy (C). Observing cardiac benefit in DBA/2J mdx mice is uncommon and has not been demonstrated in long-term studies with high level AAV micro-dystrophin transduction. As the heart is not a direct target of EDG-5506, we believe the mechanism of this benefit is indirect via improvement of skeletal muscles, including the diaphragm. Given that cardiac myopathy is a common driver of mortality in both DMD and BMD, we believe that this is a significant and clinically relevant finding.

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Reduced cardiac fibrosis and hypertrophy in DBA/2J mdx mice following treatment with EDG-5506

Reversible decreases in circulating muscle injury biomarkers following EDG-5506 administration in Golden Retriever muscular dystrophy (GRMD) dogs

Mouse models of DMD recapitulate many features of disease but they are enriched for fast fibers, develop only localized muscle fibrosis and do not exhibit functional deficits until relatively late in life. In contrast, dogs have muscle that has similar proportions of fast and slow fibers (approximately 50/50) compared to humans and weakness/functional deficits with age that more closely resemble DMD patients. Amongst the dog models of DMD, the GRMD dogs are the largest and most severely affected. GRMD dogs tend to be weak at birth and then stabilize at two weeks of age before progressive muscle damage, inflammation and pseudo-hypertrophy, particularly of the flexor muscles of the limbs causing physical weakness. Unlike DMD patients, GRMD dogs remain ambulatory and disease symptoms stabilize at six months of age, at which age their muscle histology is similar to that of a 10-year-old DMD patient.

Four disease-stable dystrophin deficient female GRMD dogs (seven months old) were dosed daily with vehicle for one week and then with EDG-5506 (3 mg/kg loading dose for two to three days, then 1 mg/kg daily) for two weeks before a six-day washout period. CK was reversibly decreased >50% with EDG-5506 (A).

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Circulating CK levels correlate with activity in GRMD dogs. In a follow-up study, (same dogs, 18 months of age), we tested whether administration of EDG-5506 affected activity using an activity monitor. We observed that EDG-5506 improved average daily activity by >30% (B), increased active time and decreased rest time in a reversible manner demonstrating both reduction in CK and improved physical function. To our knowledge, this is the first documented intervention to improve biomarkers and physical function in symptomatic, disease stable GRMD dogs. Our studies demonstrating consistent beneficial effects of EDG-5506 across multiple established preclinical models is differentiated and we believe speaks to the fundamental nature of our novel approach.

EDG-5506 decreased circulating injury biomarkers and improved activity in GRMD dogs

EDG-5506 lowered disease biomarkers in DMD dogs as measured by SOMAscan

We used a SOMAscan aptamer-based high-throughput proteomics platform to determine if other proteins, beyond CK, change in plasma in response to treatment with EDG-5506. As expected, GRMD control plasma samples exhibited many protein differences compared to healthy dogs, reflecting the serious skeletal muscle pathology of these animals. EDG-5506 successfully restored the GRMD plasma protein signature closer to that of WT dogs, reversibly lowering elevated proteins and increasing downregulated proteins. A closer examination of proteins significantly lowered by treatment with EDG-5506 validated previous CK activity measures (muscle CK reversibly lowered 34%, p<0.05). Gene ontology (GO) term analysis also revealed decreases in cellular pathways commonly associated with dystrophic muscle including apoptotic, cellular signaling, metabolic and immune responses.

SOMAscan analysis of patient plasma has previously been used to generate a common serum protein signature for DMD. As such, we compared EDG-5506’s response fingerprint in GRMD to DMD patient data. Comparison with GRMD baseline samples revealed a set of 40 elevated and nine depleted proteins overlapping with the DMD patient signature. The SOMAscan analysis showed that EDG-5506 significantly and reversibly altered blood concentrations away from the DMD patient signature profile during the dosing period.

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EDG-5506 positively altered GRMD proteins identified as being associated with the dystrophic state in DMD patients

Preclinical Pharmacokinetics and Metabolism of EDG-5506

In all species studied to date, concentration-time profiles resulting from bolus intravenous administration are characterized by rapid distribution phase followed by mono-exponential decay. EDG-5506 displayed a terminal half-life ranging from 21 to 69 hours across species. The compound distributes to skeletal muscle, its intended therapeutic target, with high skeletal tissue to plasma ratios. Distribution to cardiac muscle is minimal and tends to be on the order of 2-fold plasma levels. High absolute oral bioavailability was observed across species when presented as a solution or highly dispersed suspension.

Cytochrome P450 (CYP) reaction phenotyping studies using recombinant enzymes have identified several isoforms that are involved in EDG-5506 metabolism, including CYP3A4, 2D6, and 2C19. Drug-drug interaction studies in human liver microsomes conducted at concentrations up to 30 µM did not indicate reversible inhibition of CYPs 1A2, 2B6, 2C9, 2C19, 2D6, and 3A4. Similarly, EDG-5506 did not display measurable inhibition in time-dependent studies in the same panel of CYPs.

EDG-5506 has been administered to mouse, rat, dog, pig and monkey by intravenous and oral administration, the intended route of administration in humans, to project human PK parameters using simple allometry.

EDG-5506 Toxicology Studies

The toxicity and safety pharmacology profile of EDG-5506 has been explored in standard good laboratory practice (GLP) safety pharmacology studies, in non-good laboratory practice exploratory and dose range studies. 13-week repeated dose toxicity studies were performed in rat and dog to support the Phase 1 first-in-human clinical trial. Additionally, a 26-week oral GLP toxicity study of EDG-5506 in rats and a 39-week oral GLP toxicity study of EDG-5506 in dogs were performed to support longterm dosing in humans. All toxicities noted were ascribed to EDG-5506 and were consistent with the known mechanism of EDG-5506 and exaggerated primary PD activity (i.e., regulation of type II fast skeletal muscle myosin). There were no unanticipated off-target toxicities noted in either rats or dogs administered EDG 5506 for up to 39 weeks. We expect to receive the results of a 7-week oral juvenile toxicity study in 2022.

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EDG-5506 Formulation

EDG-5506 is formulated as a powder for suspension in a commercially available compounding agent, SyrSpend® SF (sugar free), for once daily oral administration. This allows EDG-5506 to be administered to young children. SyrSpend® SF is a sweetened, suspending vehicle for use in compounded oral liquid preparations. SyrSpend® SF is composed of modified food starch, citric acid, sucralose, and sodium citrate. All ingredients are “Generally Recognized as Safe” (GRAS) or classified as “inactive ingredients” by the FDA when used in accordance with their intended purpose. As EDG-5506 is a biopharmaceutics classification system (BCS) Class 1 molecule, it can be readily formulated into solid dosage forms including tablets and capsules.

EDG-5506 Clinical Plan

An updated overview of our near-term clinical development plan for EDG-5506 in DMD and BMD is shown below.

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EDG-5506 Phase 1 Clinical Trial

In October 2020, we initiated a Phase 1 randomized, placebo-controlled, double-blind, single and multiple ascending-dose clinical trial to evaluate the safety, tolerability and PK of EDG-5506 in adult HVs (Phase 1a) and adults with BMD (Phase 1b), to address potential differences in safety, tolerability and PK in the background of dystrophic muscle. The starting dose in the SAD was informed by the no observed adverse effect levels (NOAELs) from the 13-week GLP toxicology study. The Phase 1 clinical trial was carried out at a single site in San Antonio, Texas.

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EDG-5506 Phase 1 Clinical Trial Schematic

Phase 1a: Single Ascending Dose (SAD) Cohorts

In the first-in-human single ascending dose (SAD) trial, oral doses of EDG-5506 (0.5, 1.5, 5, 15, 45, 90 and 135 mg) or matching placebo were administered to 57 HVs — cohorts of eight participants were randomized to six receiving EDG-5506 and two receiving a placebo for each dose group. A single dose of EDG-5506 up to 90 mg was considered generally safe and well-tolerated. The most common AEs were dizziness and somnolence, which was seen at Grade 1 (on the Division of AIDS AE Grading Scale) except in the single dose cohort of 135 mg, where Grade II somnolence and dizziness were observed.

Phase 1a Events

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Our SAD demonstrated rapid absorption of EDG-5506 following a single oral dose. EDG-5506 displayed a favorable human PK profile, consistent with extensive on-target muscle distribution and a half-life of approximately 15 days. Exposures were observed to be dose proportional up to the 45 mg dose. PK modeling utilizing the SAD dataset projected that once-daily doses of 10-15 mg will achieve steady-state Ctrough drug concentrations at or above the efficacy exposure levels achieved in preclinical dystrophic models.

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Phase 1a single dose PKs in HVs

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As part of the first in human clinical trial, we also explored EDG-5506’s ability to inhibit involuntary quadriceps twitch force, a direct marker of target engagement. Using a trans-magnetic device to stimulate involuntary leg contraction via a probe placed over the top of the leg, muscle force was then measured via a force transducer connected to the ankle. This novel experimental measure has not been used previously in an interventional trial. Our goal was to derive a relationship between dose, plasma exposure and involuntary twitch force inhibition after administration of EDG-5506 in healthy volunteers.

Proof of mechanism was demonstrated by dose dependent PD activity at doses of 45 mg and above, with each dose cohort clearly differentiated from placebo. EDG-5506’s robust PD effect in humans was observed at exposures similar to those seen at efficacious levels in preclinical disease models. The time course of peak PD activity (10 hours post dosing) was substantially separated from the onset of somnolence (approximately 30 minutes post dosing). The effect was reversed within 48 hours post dosing. Onset of the PD effect was consistent with preclinical observations of steady-state redistribution to the gastrocnemius muscle in rodents. Importantly, EDG-5506 was not found to affect voluntary skeletal muscle function, as assessed by handgrip strength testing, nor was it found to negatively impact alternate forms of myosin elsewhere in the body (e.g., cardiac or slow muscle). These observations provide preliminary evidence of a dose dependent change in a biomarker of fast myosin regulation following a single dose of EDG-5506. The magnitude of the effect was in line with force reductions required to prevent muscle degeneration in preclinical experiments with dystrophic mice. Moreover, human exposures at 10 hours were consistent with steady state concentrations observed in preclinical efficacy studies.

Phase 1a: Multiple Ascending Dose (MAD) Cohorts

The MAD enrolled 40 participants of whom 30 were randomized to EDG-5506 and 10 were randomized to placebo. Cohorts B1 and B2 received a suspension with a 4-day loading dose of EDG-5506 once-daily followed by 10 days at half of this dose (B1: 10 mg/5 mg, B2: 20 mg/10 mg). Generally, cohorts B3 to B5 did not receive a loading dose and were administered a 20 mg suspension (B3) or a solid dosage form at doses of 20 mg (B4) and 40 mg (B5) daily for 14 days.

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The study drug was well tolerated in all multi-dose cohorts (5 to 40 mg EDG-5506 given once daily for 14 days). Overall, 30 of 40 (75%) enrolled subjects experienced treatment emergent adverse events (TEAEs) which were all Grade 1. Dizziness and somnolence were the most common AEs experienced and in all cases were mild and transient. At projected therapeutic doses, AEs generally decreased over time suggesting development of tolerance. There were no AEs of special interest, no SAEs, and no discontinuations due to AEs. There were no AEs due to clinically significant abnormal vital signs, ECG or laboratory assessments. Hand grip strength testing was serially measured with no significant change seen in any MAD participants.

In the MAD, the PKs on Day 1 were consistent with the PKs observed in the SAD part of the study with rapid absorption for the suspension formulation (Cohorts B1-B3). Variability observed in exposure parameters tends to decrease over time as drug accumulates with moderate variability on Day 14 consistent with filling of the muscle compartment. Cohorts B3 and B4 (20 mg once-daily for 14 days) allowed for the direct PK comparison of the suspension (SS) formulation and the solid dosage form (SD). The AUC0-24 and C24 PK parameters were similar between the two cohorts on Days 1 and 14. Accumulation ratios were also similar between the cohorts indicating similar absorption of drug. However, Cmax was lower in the solid dosage form by approximately 50-75% on each of the 3 days on which extensive PK sampling was done (1, 4, and 14).

Mean EDG-5506 Trough Plasma Concentration Versus Time Following

Multiple Oral once-daily Doses for 14 Days in Healthy Volunteers

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As already outlined in the preclinical section, we have made significant efforts to understand the pharmacology of EDG 5506, its general tolerability and its ability to improve symptoms of disease in a variety of models of muscular dystrophy. An additional and important goal was to also provide a range of compound concentrations required to achieve efficacy and translate those levels to meaningful target muscle exposures in humans. To achieve this, we focused on measuring absolute muscle concentrations in preclinical studies and then calculated a human target equivalent muscle exposure, based on relative proportions of fast muscle fibers (see figure below).

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EDG-5506 Target Human Muscle Exposure Range

As shown, EDG-5506 human muscle levels of 1,000 to 4,100 ng/g were projected to provide meaningful clinical benefit in humans based on experiments in mdx, DBA/2J mdx and GRMD. Of note, muscle concentrations in mouse studies were those required for maximal efficacy, essentially returning dystrophic muscle to a normal state.

In the MAD cohorts, muscle biopsy samples were taken at Day 14 to measure EDG-5506 levels in muscle. In Cohorts B1-B5, EDG-5506 concentrates in muscle at or above levels predicted to provide meaningful clinical benefit in humans (summarized below). Mean EDG-5506 concentration was two orders of magnitude higher concentrations in the muscle tissue versus plasma, which we believe reflects the known high-affinity binding to myosin in fast muscle fibers. This observation was key as it demonstrated EDG-5506 achieves muscle concentrations believed to be needed in the clinic in order to demonstrate efficacy.

Muscle EDG-5506 Concentrations in Cohorts B1-B5

The pharmacodynamic effect of EDG-5506 was once again measured using the Magstim trans-magnetic device. Findings from the MAD cohorts showed that not only is EDG-5506 reaching the fast muscle fibers but that EDG-5506 also leads to a dose dependent and highly statistically significant inhibition of involuntary fast muscle fiber twitch, the precise target of EDG-5506. Importantly there was no impact on voluntary muscle function.

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In summary, the Phase 1a SAD/MAD demonstrated that EDG-5506 was generally well tolerated with no serious adverse events observed. PK data supports robust target engagement with achievement of muscle concentrations well above the efficacious levels observed in preclinical disease models. Moreover, EDG-5506 PD data showed a dose-dependent effect on involuntary twitch response in healthy volunteers, reflecting robust target engagement. Based on these observations, a 20 mg solid dosage form was selected for the Becker muscular dystrophy patients in the Phase 1b trial.

Phase 1b: Becker Muscular Dystrophy Cohort (Part C)

Cohort C1 enrolled seven adult males with BMD who were randomized to active (n=5) or placebo (n=2). EDG-5506 was administered at a dose of 20 mg once daily, in solid dosage form taken with food for 14 days. The primary endpoint was safety and tolerability, and secondary endpoints were PK, including tissue concentrations, and, importantly, multiple biomarkers of muscle damage in the setting of dystrophic muscle.

BMD patients in the Phase 1b were required to be ambulatory with no exclusions based on functional criteria. An overview of the BMD patient demographics is shown below. For the functional measures the median value for the 10 m walk run was over double the age normative value and the median rise from floor was 20 seconds with three participants being unable to complete the test (unaffected adults typically have a value of <3 seconds). Serum creatinine was approximately half of the expected range, consistent with decreased muscle mass, while serum CK was a multiple of normal values consistent with ongoing muscle damage in these individuals.

BMD Phase 1b Patient Demographics

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Unsurprisingly, the quadriceps in the BMD patients demonstrated significant damage as determined by the lack of a detectable signal in response to Magstim and thus an inability to measure a change in twitch response with EDG-5506.  Moreover, the grip strength in BMD patients was also impaired to approximately 60% of normal grip strength.

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Baseline Magstim and Hand Grip Strength in BMD Cohort

EDG-5506 was well tolerated in BMD subjects. Seven of the seven subjects enrolled in the Phase 1b cohort experienced TEAEs and all were Grade 1. There were no AEs of special interest, no SAEs, and no discontinuations due to AEs. There were no AEs due to clinically significant abnormal vital signs, ECG or laboratory assessments. All participants that received EDG-5506 experienced Grade 1 dizziness with 2 of 5 participants reporting somnolence (summary below). Hand grip strength testing was serially measured with no significant change seen in BMD participants.

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Phase 1b Individuals with BMD - Adverse Events

Similar to the MAD cohorts, biopsy samples were taken from the quadriceps of BMD patients at Day 14 to measure EDG-5506 levels in muscle. EDG-5506 muscle concentrations in BMD patients were adjusted to reflect the approximately 60% fat fraction in the quadriceps of these individuals, which was further corroborated by reduced overall protein content, as measured by a standard Bradford protein assay, as well as the cohort’s overall reduced functional status. Relatedly, EDG-5506 plasma concentrations in BMD subjects were approximately two-fold higher than those in healthy volunteers at the same 20 mg dose. This observation is consistent with EDG-5506 being highly targeted to muscle, and reflective of these patient’s overall reduced muscle mass as evidenced by a mean serum creatinine level of 0.58 mg/dL, significantly below a mean value of 1.15 for an age- and sex-matched population.

Dystrophic muscle in BMD patients showed adjusted EDG-5506 levels in the range previously observed in the MAD, demonstrating a similar, high-affinity binding to myosin in fast twitch dystrophic muscles. The muscle levels reached in BMD patients were in the range where multiple preclinical studies with EDG-5506 have shown pharmacological activity in models of DMD.

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EDG-5506 Muscle and Plasma Concentration in BMD Patients

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Muscle injury in muscular dystrophies leads to leaking of several muscle proteins into the circulation, including CK, myoglobin and TNNI2 (see overview of biomarkers below). Serial blood samples were taken from BMD participants for both biochemical analysis of biomarkers of muscle damage and proteomics using the SOMAscan to enable unbiased profiling of elevated plasma proteins and establish a unique BMD disease biomarker fingerprint.

Biomarkers of Muscle Damage in Muscular Dystrophies

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After 14 days of treatment with EDG-5506, BMD participants had a significant and rapid decrease in circulating CK of 66%, reflecting a reduction from 5X to 1.6X of the upper limit of normal by the second week of dosing. The low absolute CK levels observed following treatment with EDG-5506 are unprecedented for BMD patients and have not been previously reported for any therapeutics targeting BMD patients. There was also a modest, non-significant and anticipated CK decrease in the placebo group, consistent with BMD patients being confined to a phase 1 clinical study unit and exhibiting an overall reduced level of physical activity – this “natural” reduction in CK has previously been reported for DMD children confined to an in-patient setting. Importantly, following a 4 week washout, CK values rebound back to baseline levels further supporting a strong drug effect.

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CK Reduction Following EDG-5506 Treatment

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Additionally, myoglobin levels similarly decreased to near normal levels and aspartate transaminase (AST) dropped to within the normal range in all subjects who received EDG-5506.

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Reduction in Myoglobin and AST Following EDG-5506 Treatment

Leveraging the SOMAscan 7,000 analyte set, baseline BMD patient plasma samples (n=7) were compared to baseline samples taken from healthy volunteers (n=25). To establish a unique proteomic signature for individuals with BMD, elevated proteins were filtered by those exhibiting a magnitude of change ≥1.5X and an adjusted p value of <0.05 relative to healthy volunteers (illustrated in red box below). This analysis is the first of its kind to characterize a unique proteomic fingerprint for individuals with BMD. Interestingly, and similar to individuals with DMD, the most significant elevated proteins are from muscle and metabolic pathways enriched in muscle, consistent with leaky damaged muscles.

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Baseline BMD vs. Healthy Biomarker Fingerprint Analysis with SOMAscan

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Subsequently, the impact of EDG-5506 treatment on the BMD proteomic fingerprint, was examined. As anticipated, treatment of healthy individuals with 20 mg of EDG-5506 had no impact on the BMD protein signature. In comparison, BMD individuals exhibited a robust, significant and time-dependent decrease in elevated BMD biomarkers compared to placebo after only two weeks of dosing.

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Baseline BMD vs. Healthy Biomarker Fingerprint Analysis with SOMAscan

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The BMD SOMAscan signature showed that CK and TNNI2 both exhibited a robust decrease in response to EDG-5506 treatment compared to placebo treated individuals. Specifically, CK decreased by 71%, similar to the decrease observed in biochemical activity assays, while TNNI2 decreased by 83% with treatment. Both muscle damage biomarkers returned to normal levels observed in healthy individuals following 14-days of treatment with EDG-5506 (see below). Individual SOMAscan measures of CK and TNNI2 showed a tight correlation, as would be expected for proteins that similarly leak from damaged muscles.

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CK and TNNI2 are Reduced to Levels Observed in HVs Following Treatment with EDG-5506

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Interestingly, proteins that were most elevated in the BMD signature set were also those that decreased following treatment with EDG-5506. This observation suggests a broad normalization of the proteomic signature of BMD towards a more normal state with EDG-5506 treatment.

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Correlation Between Elevation of Biomarkers and Response to EDG-5506

The robust reduction in muscle damage biomarkers observed in BMD suggests that EDG-5506 may normalize the excessive stress observed in dystrophic muscle, ultimately preserving muscle function and preventing disease progression in muscular dystrophies. In fact, a comparison of the consensus SOMAscan signature of consistently elevated proteins in DMD showed substantial overlap with those responsive to EDG-5506 treatment in BMD patients after only 14-days of dosing. As such, the positive observations in BMD are likely translatable to DMD based on EDG-5506’s unique mechanism of action.

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SOMAscan Comparison of BMD and DMD Fingerprints

Overall, the findings for the Phase 1 clinical trial with EDG-5506 provide compelling evidence for EDG-5506 as a potentially disease modifying treatment for muscular dystrophies. Both in HVs and BMD patients, EDG-5506 was well tolerated and achieved muscle concentrations well above those predicted to demonstrate efficacy based on preclinical disease models. Moreover, EDG-5506 led to a robust, significant reduction in key biomarkers of muscle damage, driving CK, TNNI2, myoglobin and AST to either normal or near normal levels observed in healthy volunteers after only two weeks of dosing.

Planned Future Clinical Trials

Following successful completion of the Phase 1 clinical trial in HVs and BMD patients, a summary of the on-going and planned clinical studies with EDG-5506 in 2022 is provided in the table below.

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Summary Table of Upcoming Clinical Trials

Open Label Study in BMD Patients (ARCH Study)

We are currently enrolling the ARCH study, which is an open-label, single-center study that will assess the safety and PK of EDG-5506 over one year in adults with BMD. This study will also investigate the effect of EDG-5506 on biomarkers of muscle fiber damage. We are enrolling participants diagnosed with BMD, who completed the Phase 1b trial, as well as participants who are treatment naïve to EDG-5506. A 10 mg dose will be administered once-daily at night prior to bedtime. We anticipate interim data in the first half of 2022.

Phase 2 Clinical Trial in BMD

The Phase 2 clinical trial in BMD is projected to commence in the first half of 2022 and will assess safety, PK, functional measures and upper leg fat fraction over one year as measured by MRI in BMD adults and adolescents. Assessments in the Phase 2 clinical trial will include muscle performance measures, such as a modified-NSAA (NSAD) and timed function tests, in addition to serum biomarkers of myofiber degeneration (e.g., CK, troponins, myoglobin).

Natural History Study and Exercise Challenge Study

In 2022, we expect to commence both an observational natural history study, being conducted in collaboration with the GRASP-LGMD Consortium, and a Phase 2 Exercise Challenge Study, to investigate the effect of EDG-5506 on muscle injury biomarkers following exercise in individuals with LGMD2I, BMD or McArdle disease at a single site in Denmark.

Phase 2 Clinical Trial in DMD

We plan to initiate a Phase 2 clinical trial in pediatric DMD patients in the second half of 2022.

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Rationale for Studying Adult Becker Muscular Dystrophy Patients

The typical BMD disease course is associated with progressive limb weakness resulting in severe disability and loss of ambulation as well as increased risk of early mortality from cardiac failure. No therapies have been approved for the treatment of BMD.

In 2016, a comprehensive, longitudinal one-year academic study was published of 69 BMD patients aged between six and 69 years. Patients were classified accordingly: deletions ending on exon 45 (del 45-x; n=28), deletions ending on exon 51 (del x-51; n=10), isolated exon 48 deletions (del 48; n=10) and other mutations (n=21). 90% of the del 48 and del x-51 had a mild or asymptomatic BMD disease course as is well known regarding the del x-51 genotype. Interestingly, the del 45-x patients presented with a more pronounced and severe BMD course with significant lower limb weakness measurable with the NSAA over a 12-month period, with the majority losing ambulation at some point in their lifetime.

Patient and Caregiver Engagement Strategy

The muscular dystrophy patient community is highly knowledgeable and active, having been heavily engaged with many of the innovations in the rare disease regulatory and drug development landscape and with strong relationships with KOLs, regulators, the research community and payors. We have and plan to continue to engage comprehensively with patients and physicians to develop positive relationships and transparent communication and become a valued partner in the muscular dystrophy stakeholder community. Through a variety of engagement efforts, we will seek to more fully appreciate the burden of disease from the patient perspective, understand the current standard of care and unmet needs in managing disease, and better learn what is most meaningful to patients. This patient insight will inform our preclinical, clinical development and commercial strategies and we expect it will facilitate more effective execution when recruiting for and conducting trials. We plan to support the key patient advocacy organizations in the United States and the European Union in their research, care, advocacy and educational initiatives to help improve the quality of life of individuals with muscular dystrophy and other diseases. By positioning ourselves as a trusted partner who moves with thoughtful urgency, we believe we will have a voice with the patients that will continue to serve us as we develop EDG-5506 and other programs for neuromuscular and other diseases.

Evolution of Newborn Screening for Muscular Dystrophy

There is typically is a diagnostic delay between when muscular dystrophy symptoms are first noticed by parents and brought to the attention of their primary care physicians, and when a genetic diagnosis is made. Unless there is a known family history, muscular dystrophy has not widely been screened for in infancy.

To fill this gap, a newborn screening initiative was put into place led by muscular dystrophy patient advocacy organizations and community leaders in the mid 2000’s with the goal of identifying and providing care for every child born with muscular dystrophy and achieving Recommended Uniform Screening Panel (RUSP) status. A critical step in this effort was developing a scalable and cost-effective algorithm for accurately detecting muscular dystrophy that could be implemented at a national level. An Ohio NBS pilot from 2007 to 2011 developed a two-tiered process using CK measured from dried blood spot (DBS) and establishing a threshold level at which a second CK from venous blood was necessary to determine who should have genetic testing. Currently, a newborn screening pilot program in New York State is testing this and other aspects of a comprehensive newborn screening program at a large scale. A Steering Committee is compiling other evidence necessary to support a nomination package to the Advisory Committee for Heritable Disorders in Newborns and Children (ACHDNC) to add muscular dystrophy to the RUSP.

Once the requirements are met and accepted at a national level, implementation then takes place at the state level. State based universal NBS would allow more infants with muscular dystrophy to be identified earlier in life, giving them a greater chance of receiving benefit from optimal care and disease modifying treatments before symptoms manifest and functional milestones are lost.

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Progress in NBS for muscular dystrophy and future implementation at a national level through inclusion of muscular dystrophy on the RUSP will allow potentially disease modifying therapies, such as EDG-5506, to be initiated early on allowing the possibility to completely alter the devastating natural history of the disease.

Additional Indications

LGMD

LGMD is a general term for muscular dystrophies that are not X-linked and are non-congenital. They are a group of disorders of skeletal muscles that results in progressive limb, shoulder, and hip girdle weakness and wasting, significantly impairing daily function with resultant disability. Collectively, they are the fourth most common genetic cause of muscle weakness. The approximate global prevalence of LGMD as a group is estimated to be from 0.56 to 5.75 per 100,000. Males and females are affected in equal numbers. Onset may occur in childhood, adolescence, young adulthood, or even later. LGMD leads to a variable shortened lifespan; however, problems can arise in individuals who have problems in heart muscles and the respiratory system.

LGMD is caused by mutations of genes that result in abnormalities in dystrophin-glycoprotein complex, the sarcomere, glycosylation of dystroglycan, vesicle and molecular trafficking, signal transduction pathways, and nuclear functions. There are at least 30 different subtypes of LGMD. The inheritance pattern of LGMD varies and different genetic defects may result in the same clinical symptoms in different patients. Several rare forms are inherited in an autosomal dominant pattern (LGMD type 1). Most forms of LGMD are inherited in an autosomal recessive manner (LGMD type 2). LGMD type 1 follows a slower and more variable disease course whereas LGMD type 2 tends to have an earlier onset and progresses more quickly.

Like DMD and BMD, most LGMD mutations destabilize the dystrophin/dystroglycan complex, resulting in muscle breakdown with normal muscle contraction and elevated serum CK levels. Treatment of LGMD is exclusively symptomatic involving physical therapy, surgery, and care of the lungs and heart. There are no disease modifying therapies approved to halt disease progression. Because EDG-5506 stabilizes muscle independently from the functional integrity of the dystrophin complex, we anticipate that our approach could also improve muscle health in LGMD patients.

McArdle Disease

McArdle disease, also known as glycogen storage disease type V (GSDV), is an autosomal recessive disease caused by mutations in the gene encoding for the muscle isoform of glycogen phosphorylase (PYGM). It is an ultra-rare disease, and the exact prevalence is not known, but is estimated to be one in 100,000-140,000 patients. It is a pure myopathy characterized by high serum CK activity, exercise intolerance, the second wind phenomenon, acute crises of early fatigue, and contractures, sometimes (50% of cases) with rhabdomyolysis and myoglobinuria, triggered by static muscle contractions or vigorous exercise.

The diagnosis of McArdle’s disease is based on biological findings that reveal a lack of elevation of blood lactate levels during the forearm ischemic exercise test, excess of glycogen, and deficit of myophosphorylase in muscle biopsy or white blood cells. There is currently no specific treatment for McArdle’s disease. Treatment is mostly symptomatic as well as avoiding the performance of intense physical exercise. Healthy lifestyle interventions, such as following a diet rich in complex carbohydrates, are the most effective means of preventing and managing exercise intolerance in McArdle’s disease and require a proactive attitude of clinicians, exercise professionals, patients and caregivers.

In light of the lack of approved therapies and the negative impact of excessive muscle contractures on the pathophysiology of McArdle’s disease, we plan to explore the potential role of EDG-5506 in preserving muscle integrity and function.

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Our Research Programs

Our muscle screening platforms have identified small molecule modulators of muscle function with alternative targets and mechanisms beyond those described for EDG-5506. We intend to take maximal advantage of these additional programs to expand our research and development pipeline into therapeutic areas of considerable unmet need.

EDG-002: Novel Molecules for Inherited HCM and Other Devastating Cardiac Disorders

Overview

Our EDG-002 program represents a unique series of novel-mechanism cardiac modulators. This series of compounds exhibit a distinct cardiac desensitizing profile with some overlapping characteristics to cardiac myosin inhibitors such as BMS/Myokardia’s mavacamten and Cytokinetics’ CK-274. However, this series of compounds also offer important mechanistic and phenotypic differences to both BMS/Myokardia’s and Cytokinetics’ molecules, which we believe have the potential to yield improved target product profiles for the treatment of HCM and heart failure with preserved ejection fraction (HFpEF).

Disease Background and Current Treatment Limitations

HCM is the most common form of genetic heart disease, affecting one in 500 individuals and is caused by abnormal proteins in the heart, including cardiac myosin, that lead to excessive cardiac contraction. Estimates suggest there are as many as 630,000 people in the United States suffering from different forms of HCM. Over time, the disruptions in cardiac muscle contraction leads to cardiac stress and thickening of the inner chambers of the heart which become stiffer and less able to pump blood. HCM patients encounter increased risk of heart failure, stroke, atrial fibrillation and sudden cardiac arrest.

There are currently no approved therapies specifically indicated for the treatment of HCM. Patients are typically treated with drugs that are indicated for broader cardiovascular disorders and do not address the underlying cause of the disease. As the disease progresses, patients have limited treatment options, such as surgical or other invasive interventions and heart transplant. More recently, the cardiac myosin inhibitor mavacamten has demonstrated significant benefit in obstructive HCM with reductions in cardiac and patient symptoms. However, despite mavacamten’s efficacy, there are still limitations of this approach including a narrow therapeutic index, long terminal half-life (seven to nine days) and limited ability to rescue excessive pharmacology if it develops.

Our Approach

Our EDG-002 program has identified compounds that directly inhibit the cardiac sarcomere but via an alternative mechanism, independent of myosin. In an initial set of studies that we conducted, a tool compound from the EDG-002 program, EDG-6036, was compared to Compound A, a clinical-stage type I myosin inhibitor (synthesized in-house in accordance with its published structure) in head-to-head experiments.

First, myosin inhibitory activity was explored by measuring the actin-activated ATPase of purified cardiac S1 myosin motor sub-fragment. Compound A, inhibited cardiac S1 ATPase in a concentration-dependent manner while EDG-6036 was inactive in this preparation (A). In contrast, both compounds were potent inhibitors of force development in intact slow skeletal muscle fibers, which share many protein components with cardiac muscle (B and C).

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EDG-6036 targets cardiac contractility through an entirely novel MOA from myosin inhibitors

In subsequent experiments, we observed that oral administration of EDG-6036 led to a reduction in cardiac ejection fraction in healthy rats (A) with a similar exposure relationship to Compound A (B). However, due to PK and mechanistic differences between these compounds (beyond oral availability), the observed dose/exposure relationship is considerably broader for EDG-6036 compared to Compound A (C), allowing for better dose titration.

EDG-6036 decreased cardiac contractility in healthy rats

Cardiac myosin inhibition with either mavacamten or CK274 represents a primary block of muscle contraction that can be difficult to override in situations of excessive pharmacology. Since our EDG-002 series of compounds work through desensitization of cardiac muscle, we sought to understand how these molecules might lead to an improved pharmacological rescue of cardiac inhibition using the beta-adrenergic receptor agonist, isoproterenol (ISO). Equivalent

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inhibitory doses of Compound A (2 mg/kg) and EDG-6036 (10 mg/kg) were given to healthy rats via oral gavage and then rescue of inhibition was attempted with intravenous infusion of ISO. We observed that rescue of ejection fraction was only partial for Compound A (A) but complete for EDG-6036 (B), highlighting the mechanistic differences between these two approaches.

In vivo cardiac inhibition with EDG-6036 can be reversed

We used an in vitro reconstituted cell system to measure compound efficacy in a model of HCM carrying a common myosin mutation (MYH7 R403Q). Induced Pluripotent Stem Cells (iPSC), derived from a HCM patient were differentiated into cardiomyocytes, seeded into a hydrogel and reconstituted into a contractile myofiber. Muscle contraction was then quantified in the presence of increasing amounts of compound and compared to iPSC-derived myofibers where the R403Q mutation had been corrected by CRISPR. As expected, MYH7 R403Q myofibers exhibited increased contractile behavior compared to corrected myofibers and both Compound A (A) and EDG-6036 (B) demonstrated potent inhibition of hyper-contraction in these patient-derived cells.

EDG-6036 decreased contraction in reconstituted human myofibers with a HCM mutation

Our cardiac inhibitors have demonstrated activity in models of HCM. In these models, our lead candidate to date, EDG-6036, showed equivalent inhibition of ejection fraction but improved effects on relaxation and rescue of excessive pharmacology relative to Compound A. We believe the results from these preliminary preclinical studies support the potential of (i) our EDG-002 program to yield a lead molecule that could become a new therapeutic standard for

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treatment of HCM and (ii) our proprietary drug discovery platform to identify novel and compelling molecules across a variety of muscle tissues and organs implicated in disease.

Next steps

We are aiming to build a rare cardiac disease franchise by initially focusing on the development of a therapeutic for patients with HCM. We are also characterizing a second therapeutic candidate coming out of our EDG-002 program specifically targeted at patients with HFpEF.

Manufacturing

We currently do not own or operate any manufacturing facilities. We rely and expect to continue to rely for the foreseeable future, on third-party contract development and manufacturing organizations (CDMOs) to produce our product candidates for preclinical and clinical testing, as well as for commercial manufacture if our product candidates receive marketing approval. Our CDMOs are obligated to produce bulk drug substances and finished drug products in accordance with current Good Manufacturing Practices (cGMPs) and all other applicable laws and regulations. We maintain agreements with our manufacturers that include confidentiality and intellectual property provisions to protect our proprietary rights related to our product candidates.

We have engaged CDMOs to manufacture EDG-5506 for preclinical and clinical use. All of our product candidates are small molecules and are manufactured in synthetic processes from readily available starting materials. Our chemistry is a convergent synthesis of under five steps, appears amenable to scale up and does not currently require unusual equipment in the manufacturing process. We obtain our supplies from these CDMOs on a purchase order basis and do not have a long-term supply arrangement in place. We do not currently have arrangements in place for redundant supply. For all of our product candidates, we intend to identify and qualify additional manufacturers to provide the active pharmaceutical ingredient and fill-and-finish services prior to seeking regulatory approval.

Sales and Marketing

If any of our product candidates are approved, we currently intend to market and commercialize them in the United States and select international markets, either alone or in collaboration with others.

Competition

Currently, approximately 70% of patients with DMD are treated with corticosteroids to manage the inflammatory component of the disease. EMFLAZA (deflazacort) is an FDA-approved corticosteroid marketed by PTC Therapeutics, Inc. and prednisone is also FDA-approved and is marketed by multiple companies. In addition, there are four FDA-approved exon skipping drugs: EXONDYS 51 (eteplirsen), AMONDYS 45 (casimersen) and VYONDYS 53 (golodirsen), which are naked PMOs approved for the treatment of DMD patients amenable to Exon 51, Exon 45 and Exon 53 skipping, respectively, and are marketed by Sarepta Therapeutics, Inc., and VILTEPSO (vitolarsen), a naked PMO approved for the treatment of DMD patients amenable to Exon 53 skipping, which is marketed by Nippon Shinyaku Co. Ltd. Companies focused on developing treatments for DMD that target dystrophin mechanisms include Sarepta Therapeutics with SRP-5051, a peptide-linked PMO currently being evaluated in a Phase 2 clinical trial for patients amenable to Exon 51 skipping, PTC Therapeutics with ataluren, a small molecule targeting nonsense mutations in a Phase 3 clinical trial, Avidity Biosciences, Inc., which is in preclinical development with an antibody oligonucleotide conjugate that targets dystrophin production and Dyne Therapeutics which is also in preclinical development with its proprietary antigen-binding oligonucleotide linker technology that targets dystrophin production. In addition, several companies are in clinical trials to develop gene therapies to treat DMD, including Genethon Company (GNT-0004), Pfizer Inc. (PF-06939926), Sarepta Therapeutics (SRP-9001 and Galgt2 gene therapy program), and Solid Biosciences Inc. (SGT-001). Gene editing treatments that are in preclinical development are also being pursued by Vertex and Sarepta Therapeutics. We are also aware of several companies targeting non-dystrophin mechanisms for the treatment of DMD. Moreover, Epirium Bio is developing a synthetic compound that targets cellular energetics and muscle regeneration as a potential therapeutic for BMD and Italfarmaco is also evaluating the use of Givinostat, an HDAC inhibitor, in BMD patients.

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Intellectual Property

Our commercial success depends in part on our ability to obtain and maintain proprietary or intellectual property protection for our drug candidates, technology and know-how, to operate without infringing the proprietary or intellectual property rights of others and to prevent others from infringing our proprietary or intellectual property rights. We expect that we will seek to protect our proprietary and intellectual property position by, among other methods, pursuing and obtaining patent protection in the United States and in jurisdictions outside of the United States related to our proprietary technology, inventions, improvements and drug candidates that are important to the development and implementation of our business. We also rely on trade secrets, know-how, trademarks, continuing technological innovation and licensing opportunities to develop and maintain our proprietary and intellectual property position.

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We currently, and expect that we will continue to, own or in-license patents and patent applications related to our key drug candidates. We own patents and patent applications that cover compositions of matter, methods of treating diseasessuch as DMD, BMD, LGMD and muscle spasticity disorders and combination therapies. As of January 21, 2022, we own a patent portfolio consisting of 10 patent families and in-license one patent family from OSIF. We own 2 issued U.S. patents, 4 pending U.S. patent applications, 5 pending PCT applications, and 41 pending foreign applications filed in 15 different countrites and regions including Europe, Australia, Brazil, Canada, China, Eurasia, Israel, India, Japan, South Korea, Mexico, New Zealand, Singapore, South Africa, and Hong Kong. We own one issued U.S. patent that covers compositions of matter of EDG-5506 and methods of treatment using EDG-5506 that is expected to expire in 2039, excluding any patent term extensions. For our drug candidates, we generally pursue multilayered patent protection covering compositions of matter, methods of use and methods of manufacture. We also intend to pursue patent protection, if available, with respect to biomarkers that may be useful in selecting a patient population for use of our drug candidates.We intend to strengthen the patent protection of our drug candidates and technologies through additional patent application filings.

The term of individual patents depends upon the legal term for patents in the countries in which they are granted. In most countries in which we file, the patent term is generally 20 years from the earliest date of filing a non-provisional patent application. In the United States, the patent term may, in certain cases, be lengthened by patent term adjustment, which compensates a patentee for administrative delays by the U.S. Patent and Trademark Office (USPTO) in examining and granting a patent or may be shortened if a patent is terminally disclaimed over a commonly owned patent or a patent naming a common inventor and having an earlier expiration date. Additionally, the Drug Price Competition and Patent Term Restoration Act of 1984 (the Hatch-Waxman Act) permits patent term extension of up to five years beyond the expiration date of a U.S. patent as partial compensation for the length of time a drug is under regulatory review while a patent that covers the drug is in force. The length of the patent term extension is related to the length of time the drug is under regulatory review. Patent term extension cannot extend the remaining term of a patent beyond a total of 14 years from the date of product approval, only one patent applicable to each regulatory review period may be extended and only those claims covering the approved drug, a method for using it or a method for manufacturing it may be extended.

Similar provisions are available in the European Union and certain other foreign jurisdictions to extend the term of a patent that covers an approved drug. In the future, if and when our drug candidates receive approval by the FDA or foreign regulatory authorities, we expect to apply for patent term extensions on issued patents covering those products, if available. However, there is no guarantee that the applicable authorities, including the FDA in the United States, will agree with our assessment of whether such extensions should be granted, and, if granted, the length of such extensions. For more information regarding the risks related to our intellectual property, see the section titled “Risk Factors — Risks Related to Our Intellectual Property.” Expiration dates referred to above are without regard to potential patent term extension or other market exclusivity that may be available to us.

In addition to patent protection, we also rely on trade secrets, know-how, trademarks, other proprietary information and continuing technological innovation to develop and maintain our competitive position. We seek to protect and maintain the confidentiality of proprietary information to protect aspects of our business that are not amenable to, or that we do not consider appropriate for, patent protection. Although we take steps to protect our proprietary information and trade secrets, including through contractual means with our employees and consultants, third parties may independently develop substantially equivalent proprietary information and techniques or otherwise gain access to our trade secrets or disclose our technology. Thus, we may not be able to meaningfully protect our trade secrets. It is our policy to require

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our employees, consultants, outside scientific collaborators, sponsored researchers and other advisors to execute confidentiality agreements upon the commencement of employment or consulting relationships with us. These agreements provide that all confidential information concerning our business or financial affairs developed or made known to the individual during the course of the individual’s relationship with us is to be kept confidential and not disclosed to third parties except in specific circumstances. Our agreements with employees also provide that all inventions conceived by the employee in the course of employment with us or from the employee’s use of our confidential information are our exclusive property. However, such confidentiality agreements and invention assignment agreements can be breached, and we may not have adequate remedies for any such breach. For more information regarding the risks related to our intellectual property, see the section titled “Risk Factors — Risks Related to Our Intellectual Property.”

The patent positions of biotechnology companies like ours are generally uncertain and involve complex legal, scientific and factual questions. Our commercial success will also depend in part on not infringing upon the proprietary rights of third parties. It is uncertain whether the issuance of any third-party patent would require us to alter our development or commercial strategies, alter our drugs or processes, obtain licenses or cease certain activities. Our breach of any license agreements or our failure to obtain a license to proprietary rights required to develop or commercialize our future products may have a material adverse impact on us. If third parties prepare and file patent applications in the United States that also claim technology to which we have rights, we may have to participate in interference or derivation proceedings in the USPTO to determine priority of invention. For more information, see the section titled “Risk Factors — Risks Related to Our Intellectual Property.”

Third Party Agreements

2020 Exclusive License Agreement with The Ohio State Innovation Foundation

We have exclusively licensed intellectual property from The Ohio State Innovation Foundation (OSIF) in a license agreement effective November 20, 2020. We entered into the agreement with OSIF for an exclusive worldwide license to develop and commercialize products covered by the OSIF licensed intellectual property for the treatment, prevention or palliation of muscular dystrophies and disorders. The product candidates under development by the Company are not based on the intellectual property licensed from OSIF. The patent applications licensed from OSIF may, in the future, provide additional patent coverage for certain aspects of the Company’s product candidates currently under development, depending on the eventual scope of any OSIF patents if and when issued, which scope and likelihood of issuance are uncertain.

Under the license agreement, we are obligated to make payments to OSIF aggregating up to $1.3 million per product covered by the OSIF licensed patent rights upon the achievement of specified development and regulatory approval milestones and approximately $2.3 million per product covered by the OSIF licensed patent rights upon the achievement of specified sales milestones. We are also obligated to pay low single-digit royalties to OSIF based on net sales by us and our affiliates and sublicensees of each product covered by the OSIF licensed patent rights. In addition, in the event we sublicense the OSIF licensed patent rights, we are obligated to pay OSIF a specified portion of income we receive from sublicensing. To date, we have paid OSIF $235,000 in connection with the license agreement.

Our royalty obligations with respect to each product covered by OSIF licensed patent rights in a country extend until the last-to-expire patent claim licensed from OSIF covering the product in the country. The latest possible expiration of patents licensed under the agreement is 2039 in all applicable countries, in the absence of any patent extensions that may be available for such patents.

Under the license agreement, we are obligated to use a certain level of effort to develop and commercialize at least one product covered by the OSIF licensed patents or derived from the material provided by OSIF and to achieve certain milestones within set times, subject to certain extensions.

OSIF has the right to terminate the license agreement for our uncured material breach of the license agreement, including if we fail to achieve specified development, regulatory approval and sales milestones within specified timeframes, or for certain events related to our bankruptcy. We have the right to terminate the agreement at any time.

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Government Regulations

Government authorities in the United States, at the federal, state, and local level, and other countries extensively regulate, among other things, the research, development, nonclinical and clinical testing, manufacture, quality control, approval, labeling, packaging, storage, record-keeping, promotion, advertising, distribution, post-approval monitoring and reporting, marketing, and export and import of products such as those we are developing. Generally, before a new drug can be marketed, considerable data must be generated, which demonstrate the drug’s quality, safety, and efficacy. Such data must then be organized into a format specific for each regulatory authority, submitted for review and approved by the regulatory authority.

U.S. Drug Development Process

In the United States, the FDA regulates drugs under the federal Food, Drug, and Cosmetic Act (FDCA), and its implementing regulations. The process of obtaining regulatory approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial resources. Failure to comply with the applicable U.S. requirements at any time during the product development process, the approval process or after approval may subject an applicant to administrative or judicial sanctions. These sanctions could include the FDA’s refusal to approve pending applications, withdrawal of an approval, a clinical hold, warning letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of government contracts, restitution, disgorgement, or civil or criminal penalties. Any agency or judicial enforcement action could have a material adverse effect on us.

The process required by the FDA before a drug may be marketed in the United States generally involves the following:

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Prior to beginning the first clinical trial with a product candidate in the United States, we must submit an IND to the FDA. An IND is a request for authorization from the FDA to administer an investigational new drug product to humans. The central focus of an IND submission is on the general investigational plan and the protocol(s) for clinical studies. The IND also includes results of animal and in vitro studies assessing the toxicology, pharmacokinetics, pharmacology, and pharmacodynamic characteristics of the product; chemistry, manufacturing, and controls information; and any available human data or literature to support the use of the investigational product. An IND must become effective before human clinical trials may begin. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA, within the 30-day time period, raises safety concerns or questions about the proposed clinical trial. In such a case, the IND may be placed on clinical hold and the IND sponsor and the FDA must resolve any outstanding concerns or questions before the clinical trial can begin. Submission of an IND therefore may or may not result in FDA authorization to begin a clinical trial.

Clinical trials involve the administration of the investigational product to human subjects under the supervision of qualified investigators in accordance with GCPs, which include the requirement that all research subjects provide their informed consent for their participation in any clinical trial. Clinical trials are conducted under protocols detailing, among other things, the objectives of the study, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. A separate submission to the existing IND must be made for each successive clinical trial conducted during product development and for any subsequent protocol amendments. Furthermore, an independent IRB for each site proposing to conduct the clinical trial must review and approve the plan for any clinical trial and its informed consent form before the clinical trial begins at that site and must monitor the study until completed. Regulatory authorities, the IRB or the sponsor may suspend a clinical trial at any time on various grounds, including a finding that the subjects are being exposed to an unacceptable health risk or that the clinical trial is unlikely to meet its stated objectives. Some trials also include oversight by an independent group of qualified experts organized by the clinical trial sponsor, known as a data safety monitoring board, which may review data and endpoints at designated check points, make recommendations and/or halt the clinical trial if it determines that there is an unacceptable safety risk for subjects or other grounds, such as no demonstration of efficacy. There are also requirements governing the reporting of ongoing clinical studies and clinical trial results to public registries.

Human clinical trials are typically conducted in three sequential phases that may overlap or be combined:

Post-approval clinical trials, sometimes referred to as Phase 4 studies, may be conducted after initial marketing approval. These clinical trials are used to gain additional experience from the treatment of patients in the intended therapeutic indication. In certain instances, the FDA may mandate the performance of Phase 4 clinical trials as a condition of approval of an NDA.

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The FDA or the sponsor may suspend a clinical trial at any time on various grounds, including a finding that the research subjects or patients are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRB’s requirements or if the drug has been associated with unexpected serious harm to patients. In addition, some clinical trials are overseen by an independent group of qualified experts organized by the sponsor, known as a data safety monitoring board or committee. Depending on its charter, this group may determine whether a clinical trial may move forward at designated check points based on access to certain data from the clinical trial.

During the development of a new drug, sponsors are given opportunities to meet with the FDA at certain points. These points may be prior to submission of an IND, at the end of Phase 2, and before an NDA is submitted. Meetings at other times may be requested. These meetings can provide an opportunity for the sponsor to share information about the data gathered to date, for the FDA to provide advice, and for the sponsor and the FDA to reach agreement on the next phase of development. Sponsors typically use the meetings at the end of the Phase 2 clinical trial to discuss Phase 2 clinical results and present plans for the pivotal Phase 3 clinical trials that they believe will support approval of the new drug.

Phase I, Phase II, and Phase III clinical testing may not be completed successfully within a specified period, if any all, and there can be no assurance that the data collected will support FDA approval of a product candidate. Concurrent with clinical trials, companies usually complete additional animal studies and must also develop additional information about the chemistry and physical characteristics of the drug and finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other things, the manufacturer must develop methods for testing the identity, strength, quality, and purity of the final drug. In addition, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf life.

While the IND is active and before approval, progress reports summarizing the results of the clinical trials and nonclinical studies performed since the last progress report must be submitted at least annually to the FDA, and written IND safety reports must be submitted to the FDA and investigators for serious and unexpected suspected adverse events, findings from other studies suggesting a significant risk to humans exposed to the same or similar drugs, findings from animal or in vitro testing suggesting a significant risk to humans, and any clinically important increased incidence of a serious suspected adverse reaction compared to that listed in the protocol or investigator brochure.

We may be required to develop and implement additional clinical trial policies and procedures designed to help protect subjects from the novel coronavirus disease (COVID-19). For example, in March 2020, the FDA issued a guidance, which FDA subsequently updated, on conducting clinical trials during the pandemic, which describes a number of considerations for sponsors of clinical trials impacted by the pandemic, including the requirement to include in the clinical trial report contingency measures implemented to manage the trial, and any disruption of the trial as a result of the COVID-19 pandemic; a list of all subjects affected by the COVID-19-pandemic related study disruption by unique subject identifier and by investigational site and a description of how the individual’s participation was altered; and analyses and corresponding discussions that address the impact of implemented contingency measures (e.g., participant discontinuation from investigational product and/or study, alternative procedures used to collect critical safety and/or efficacy data) on the safety and efficacy results reported for the trial. In 2020 and 2021, FDA published a number of industry guidance documents, including updates to previous guidance, related to Good Manufacturing Practices, remote interactive evaluations of drug manufacturing and bioresearch monitoring facilities, and drug product manufacturing and supply chain inspections, among others. The extent to which the COVID-19 pandemic impacts our business, preclinical studies and clinical trials will depend on future developments, which are highly uncertain and cannot be predicted with confidence.

NDA Review and Approval Process

Assuming successful completion of all required testing in accordance with all applicable regulatory requirements, the results of product development nonclinical studies and clinical trials, along with descriptions of the manufacturing process, analytical tests conducted on the chemistry of the drug, proposed labeling and other relevant information are

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submitted to the FDA as part of an NDA requesting approval to market the product. The submission of an NDA is subject to the payment of substantial user fees; a waiver of such fees may be obtained under certain limited circumstances. Additionally, no user fees are assessed on NDAs for products designated as orphan drugs, unless the product also includes a non-orphan indication.

The FDA reviews an NDA to determine, among other things, whether a product is safe and effective for its intended use and whether its manufacturing is cGMP-compliant to assure and preserve the product’s identity, strength, quality, and purity. Under the Prescription Drug User Fee Act (PDUFA), guidelines that are currently in effect, the FDA has a goal of ten months from the date of “filing” of a standard NDA for a new molecular entity to review and act on the submission. This review typically takes 12 months from the date the NDA is submitted to FDA because the FDA has approximately two months to make a “filing” decision after the application is submitted. The FDA conducts a preliminary review of all NDAs within the first 60 days after submission, before accepting them for filing, to determine whether they are sufficiently complete to permit substantive review The FDA may request additional information rather than accept an NDA for filing. In this event, the NDA must be resubmitted with the additional information. The resubmitted application is also subject to review before the FDA accepts it for filing.

The FDA may refer an application for a novel drug to an advisory committee. An advisory committee is a panel of independent experts, including clinicians and other scientific experts, that reviews, evaluates and provides a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

Before approving an NDA, the FDA will typically inspect the facility or facilities where the product is manufactured. The FDA will not approve an application unless it determines that the manufacturing processes and facilities are in compliance with cGMP and adequate to assure consistent production of the product within required specifications. Additionally, before approving an NDA, the FDA will typically inspect one or more clinical sites to assure compliance with GCPs. If the FDA determines that the application, manufacturing process, or manufacturing facilities are not acceptable, it will outline the deficiencies in the submission and often will request additional testing or information. Notwithstanding the submission of any requested additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval.

After the FDA evaluates an NDA, it will issue an approval letter or a Complete Response Letter. An approval letter authorizes commercial marketing of the drug with prescribing information for specific indications. A Complete Response Letter indicates that the review cycle of the application is complete, and the application will not be approved in its present form. A Complete Response Letter usually describes the specific deficiencies in the NDA identified by the FDA and may require additional clinical data, such as an additional pivotal Phase 3 clinical trial or other significant and time-consuming requirements related to clinical trials, nonclinical studies, or manufacturing. If a Complete Response Letter is issued, the sponsor must resubmit the NDA, addressing all of the deficiencies identified in the letter, or withdraw the application. Even if such data and information are submitted, the FDA may decide that the NDA does not satisfy the criteria for approval.

If regulatory approval of a product is granted, such approval will be granted for particular indications and may entail limitations on the indicated uses for which such product may be marketed. For example, the FDA may approve the NDA with a risk evaluation and mitigation strategy (REMS) to ensure the benefits of the product outweigh its risks. A REMS is a safety strategy to manage a known or potential serious risk associated with a medicine and to enable patients to have continued access to such medicines by managing their safe use. It could include medication guides, physician communication plans, or elements to assure safe use, such as restricted distribution methods, patient registries, and other risk minimization tools. The FDA also may offer accelerated approval with postmarketing confirmatory trial requirements or approvals subject to other postmarketing requirements, including among other things, changes to proposed labeling or the development of adequate controls and specifications. Once approved, the FDA may withdraw the product approval if compliance with pre- and post-marketing requirements is not maintained or if problems occur after the product reaches the marketplace. The FDA may also require one or more Phase 4 post-market studies and surveillance to further assess and monitor the product’s safety and effectiveness after commercialization and may limit further marketing of the product based on the results of these post-marketing studies. In addition, new government

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requirements, including those resulting from new legislation, may be established, or the FDA’s policies may change, which could impact the timeline for regulatory approval or otherwise impact ongoing development programs.

Expedited Development and Review Programs

The FDA has a fast-track designation program that is intended to expedite or facilitate the process for reviewing new drug products that meet certain criteria. Specifically, new drugs are eligible for fast-track designation if they are intended to treat a serious or life-threatening disease or condition and demonstrate the potential to address unmet medical needs for the disease or condition. With regard to a fast-track product, the FDA may consider for review sections of the NDA on a rolling basis before the complete application is submitted, if the sponsor provides a schedule for the submission of the sections of the NDA, the FDA agrees to accept sections of the NDA and determines that the schedule is acceptable, and the sponsor pays any required user fees upon submission of the first section of the NDA.

Any product submitted to the FDA for approval, including a product with a fast-track designation, may also be eligible for other types of FDA programs intended to expedite development and review, such as priority review and accelerated approval. A product is eligible for priority review if it has the potential to provide safe and effective therapy where no satisfactory alternative therapy exists or a significant improvement in the treatment, diagnosis, or prevention of a disease compared to marketed products. The FDA will attempt to direct additional resources to the evaluation of an application for a new drug designated for priority review in an effort to facilitate the review. The FDA endeavors to review applications with priority review designations within six months of the filing date as compared to ten months for review of new molecular entity NDAs under its current PDUFA review goals.

In addition, a product may be eligible for accelerated approval. Drug products intended to treat serious or life-threatening diseases or conditions may be eligible for accelerated approval upon a determination that the product has an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments. As a condition of approval, the FDA may require that a sponsor of a drug receiving accelerated approval perform adequate and well-controlled post-marketing clinical trials. In addition, the FDA currently requires pre-approval of promotional materials as a condition for accelerated approval, which could adversely impact the timing of the commercial launch of the product.

The Food and Drug Administration Safety and Innovation Act established a category of drugs referred to as “breakthrough therapies” that may be eligible to receive breakthrough therapy designation. A sponsor may seek FDA designation of a product candidate as a “breakthrough therapy” if the product is intended, alone or in combination with one or more other products, to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the product may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. The designation includes all of the fast-track program features, as well as more intensive FDA interaction and guidance. The breakthrough therapy designation is a distinct status from both accelerated approval and priority review, which can also be granted to the same drug if relevant criteria are met. If a product is designated as breakthrough therapy, the FDA will work to expedite the development and review of such drug.

Fast track designation, priority review, accelerated approval, and breakthrough therapy designation do not change the standards for approval, but may expedite the development or approval process. Even if a product qualifies for one or more of these programs, the FDA may later decide that the product no longer meets the conditions for qualification or decide that the time period for FDA review or approval will not be shortened. We may explore some of these opportunities for our product candidates as appropriate.

Orphan Drugs

Under the Orphan Drug Act, the FDA may grant orphan drug designation (ODD), to a drug or biologic intended to treat a rare disease or condition, defined as a disease or condition with either a patient population of fewer than 200,000 individuals in the United States, or a patient population greater of than 200,000 individuals in the United States when

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there is no reasonable expectation that the cost of developing and making available the drug or biologic in the United States will be recovered from sales in the United States of that drug or biologic. ODD must be requested before submitting a NDA. After the FDA grants ODD, the generic identity of the therapeutic agent and its potential orphan use are disclosed publicly by the FDA.

If a product that has received ODD and subsequently receives the first FDA approval for a particular active ingredient for the disease for which it has such designation, the product is entitled to orphan product exclusivity, which means that the FDA may not approve any other applications, including a full NDA, to market the same biologic for the same indication for seven years from the approval of the NDA, except in limited circumstances, such as a showing of clinical superiority to the product with orphan drug exclusivity or if the FDA finds that the holder of the orphan drug exclusivity has not shown that it can assure the availability of sufficient quantities of the orphan drug to meet the needs of patients with the disease or condition for which the drug was designated. Orphan drug exclusivity does not prevent the FDA from approving a different drug or biologic for the same disease or condition, or the same drug or biologic for a different disease or condition. Among the other benefits of ODD are tax credits for certain research and a waiver of the NDA application user fee.

A designated orphan drug may not receive orphan drug exclusivity if it is approved for a use that is broader than the indication for which it received ODD. In addition, orphan drug exclusive marketing rights in the United States may be lost if the FDA later determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or condition.

Post-Approval Requirements

Any products manufactured or distributed by us pursuant to FDA approvals are subject to pervasive and continuing regulation by the FDA, including, among other things, requirements relating to record-keeping, reporting of adverse experiences, periodic reporting, product sampling and distribution, and advertising and promotion of the product. After approval, most changes to the approved product, such as adding new indications or other labeling claims, are subject to prior FDA review and approval. There are continuing, annual program fees for any marketed products. Drug manufacturers and their subcontractors are required to register their establishments with the FDA and certain state agencies and are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with cGMP, which impose certain procedural and documentation requirements upon us and our third-party manufacturers. Changes to the manufacturing process are strictly regulated, and, depending on the significance of the change, may require prior FDA approval before being implemented. FDA regulations also require investigation and correction of any deviations from cGMP and impose reporting requirements upon us and any third-party manufacturers that we may decide to use. Accordingly, manufacturers must continue to expend time, money, and effort in the area of production and quality control to maintain compliance with cGMP and other aspects of regulatory compliance.

The FDA may withdraw approval if compliance with regulatory requirements and standards is not maintained or if problems occur after the product reaches the market. Later discovery of previously unknown problems with a product, including adverse events of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with regulatory requirements, may result in revisions to the approved labeling to add new safety information; imposition of post-market studies or clinical studies to assess new safety risks; or imposition of distribution restrictions or other restrictions under a REMS program. Other potential consequences include, among other things:

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The FDA closely regulates the marketing, labeling, advertising, and promotion of drug products. A company can make only those claims relating to safety and efficacy that are approved by the FDA and in accordance with the provisions of the approved label. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses. Failure to comply with these requirements can result in, among other things, adverse publicity, warning letters, corrective advertising, and potential civil and criminal penalties. Physicians may prescribe, in their independent professional medical judgment, legally available products for uses that are not described in the product’s labeling and that differ from those tested by us and approved by the FDA. Physicians may believe that such off-label uses are the best treatment for many patients in varied circumstances. The FDA does not regulate the behavior of physicians in their choice of treatments. The FDA does, however, restrict manufacturer’s communications on the subject of off-label use of their products. The federal government has levied large civil and criminal fines against companies for alleged improper promotion of off-label use and has enjoined companies from engaging in off-label promotion. The FDA and other regulatory agencies have also required that companies enter into consent decrees or permanent injunctions under which specified promotional conduct is changed or curtailed. However, companies may share truthful and not misleading information that is otherwise consistent with a product’s FDA-approved labelling.

U.S. Patent-Term Restoration and Marketing Exclusivity

Depending upon the timing, duration and specifics of FDA approval of any future product candidates, some of our U.S. patents may be eligible for limited patent term extension under the Hatch-Waxman Act. The Hatch-Waxman Act permits restoration of the patent term of up to five years as compensation for patent term lost during product development and FDA regulatory review process. Patent-term restoration, however, cannot extend the remaining term of a patent beyond a total of 14 years from the product’s approval date. The patent-term restoration period is generally one-half the time between the effective date of an IND or the issue date of the patent, whichever is later, and the submission date of an NDA plus the time between the submission date of an NDA or the issue date of the patent, whichever is later, and the approval of that application, except that the review period is reduced by any time during which the applicant failed to exercise due diligence. Only one patent applicable to an approved drug is eligible for the extension and the application for the extension must be submitted prior to the expiration of the patent. The USPTO, in consultation with the FDA, reviews and approves the application for any patent term extension or restoration. In the future, we may apply for restoration of patent term for our currently owned or licensed patents to add patent life beyond its current expiration date, depending on the expected length of the clinical trials and other factors involved in the filing of the relevant NDA.

Market exclusivity provisions under the FDCA also can delay the submission or the approval of certain applications. The FDCA provides a five-year period of non-patent marketing exclusivity within the United States to the first applicant to gain approval of a NDA for a new chemical entity. A drug is a new chemical entity if the FDA has not previously approved any other new drug containing the same active moiety, which is the molecule or ion responsible for the action of the drug substance. During the exclusivity period, the FDA may not accept for review an abbreviated new drug application (ANDA), or a 505(b)(2) NDA submitted by another company for a generic version of such drug where the applicant does not own or have a legal right of reference to all the data required for approval. However, an application may be submitted after four years if it contains a certification of patent invalidity or non-infringement. The FDCA also provides three years of marketing exclusivity for a NDA, 505(b)(2) NDA or supplement to an existing NDA if new clinical investigations, other than bioavailability studies, that were conducted or sponsored by the applicant are deemed by the FDA to be essential to the approval of the application, for example, new indications, dosages or strengths of an

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existing drug. This three-year exclusivity covers only the conditions of use associated with the new clinical investigations and does not prohibit the FDA from approving ANDAs for drugs containing the original active agent. Five-year and three-year exclusivity will not delay the submission or approval of a full NDA. However, an applicant submitting a full NDA would be required to conduct or obtain a right of reference to all of the preclinical studies and adequate and well-controlled clinical trials necessary to demonstrate safety and effectiveness or generate such data themselves.

Pediatric exclusivity is another type of marketing exclusivity available in the United States and provides for an additional six months of marketing exclusivity attached to another period of exclusivity if a sponsor conducts clinical trials in children in response to a written request from the FDA. The issuance of a written request does not require the sponsor to undertake the described clinical trials.

Other U.S. Regulatory Matters

Pharmaceutical manufacturers are subject to additional healthcare laws, regulation, and enforcement by the federal government and by authorities in the states and foreign jurisdictions in which they conduct their business. Such laws include, without limitation, U.S. federal anti-kickback, anti-self-referral, false claims, transparency, including the federal Physician Payments Sunshine Act, consumer fraud, pricing reporting, data privacy, data protection, and security laws and regulations, including the Health Insurance Portability and Accountability Act of 1996 (HIPAA), as well as similar foreign laws in the jurisdictions outside the U.S. Similar state and local laws and regulations may also restrict business practices in the pharmaceutical industry, such as state anti-kickback and false claims laws, which may apply to business practices, including but not limited to, research, distribution, sales, and marketing arrangements and claims involving healthcare items or services reimbursed by nongovernmental third-party payors, including private insurers, or by patients themselves; state laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government, or otherwise restrict payments that may be made to healthcare providers and other potential referral sources; state laws and regulations that require drug manufacturers to file reports relating to pricing and marketing information; state and local laws which require the tracking of gifts and other remuneration and any transfer of value provided to physicians, other healthcare providers and entities; and state and local laws that require the registration of pharmaceutical sales representatives; and state and local laws governing the privacy and security of health information in some circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts.

These laws and regulations are subject to change, which can increase the resources needed for compliance and delay drug approval or commercialization. Any action brought against us for violations of these laws or regulations, even successfully defended, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business. Also, we may be subject to private “qui tam” actions brought by individual whistleblowers on behalf of the federal or state governments. Actual or alleged violation of any such laws or regulations may lead to investigations and other claims and proceedings by regulatory authorities and in certain cases, private actors, and violation of any of such laws or any other governmental regulations that apply may result in penalties, including, without limitation, significant administrative, civil and criminal penalties, damages, fines, disgorgement, imprisonment, additional reporting obligations, and oversight if we become subject to a corporate integrity agreement or other agreement to resolve allegations of non-compliance with these laws, the curtailment or restructuring of operations, exclusion from participation in government healthcare programs and imprisonment.

Coverage and Reimbursement

Sales of any pharmaceutical product depend, in part, on the extent to which such product will be covered by third-party payors, such as federal, state, and foreign government healthcare programs, commercial insurance, and managed healthcare organizations, and the level of reimbursement for such product by third-party payors. Significant uncertainty exists as to the coverage and reimbursement status of any newly approved product. Decisions regarding the extent of coverage and amount of reimbursement to be provided are made on a plan-by-plan basis. One third-party payor’s decision to cover a particular product does not ensure that other payors will also provide coverage for the product. As a result, the coverage determination process can require manufacturers to provide scientific details, information on cost-

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effectiveness, and clinical support for the use of a product to each payor separately. This can be a time-consuming process, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the first instance. In addition, third-party payors are increasingly reducing reimbursements for pharmaceutical products and related services. The U.S. government and state legislatures have continued implementing cost-containment programs, including price controls, restrictions on coverage and reimbursement and requirements for substitution of generic products. Third-party payors are increasingly challenging the prices charged, examining the medical necessity and reviewing the cost effectiveness of pharmaceutical products, in addition to questioning their safety and efficacy. Adoption of price controls and cost-containment measures, and adoption of more restrictive policies in jurisdictions with existing controls and measures, could further limit sales of any product. Decreases in third-party reimbursement for any product or a decision by a third-party payor not to cover a product could reduce physician usage and patient demand for the product.

In international markets, reimbursement and healthcare payment systems vary significantly by country, and many countries have instituted price ceilings on specific products and therapies. For example, the European Union provides options for its member states to restrict the range of medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use. A member state may approve a specific price for the medicinal product, or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the medicinal product on the market. Pharmaceutical products may face competition from lower-priced products in foreign countries that have placed price controls on pharmaceutical products and may also compete with imported foreign products. Furthermore, there is no assurance that a product will be considered medically reasonable and necessary for a specific indication, that it will be considered cost-effective by third-party payors, that an adequate level of reimbursement will be established even if coverage is available, or that the third-party payors’ reimbursement policies will not adversely affect the ability for manufacturers to sell products profitably.

Healthcare Reform

In the United States and certain foreign jurisdictions, there have been, and we expect there will continue to be, a number of legislative and regulatory changes to the healthcare system. In March 2010, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of 2010 (collectively, the ACA), was signed into law, which substantially changed the way healthcare is financed by both governmental and private insurers in the United States. By way of example, the ACA increased the minimum level of Medicaid rebates payable by manufacturers of brand name drugs from 15.1% to 23.1%; it required collection of rebates for drugs paid by Medicaid managed care organizations; imposed a non-deductible annual fee on pharmaceutical manufacturers or importers who sell certain “branded prescription drugs” to specified federal government programs; it implemented a new methodology under which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted, or injected; it expanded the eligibility criteria for Medicaid programs; it created a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct comparative clinical effectiveness research, along with funding for such research; and it established a Center for Medicare Innovation at the Centers for Medicare & Medicaid Services (CMS), to test innovative payment and service delivery models to lower Medicare and Medicaid spending, potentially including prescription drug spending. Since its enactment, there have been executive, judicial and Congressional challenges to certain aspects of the ACA, and we expect there will be additional challenges and amendments to the ACA in the future.

The ACA continues to significantly impact the United States’ pharmaceutical industry. Since its enactment, there have been judicial and Congressional challenges to certain aspects of the ACA. There remain judicial and Congressional challenges to certain aspects of the ACA. Concurrently, Congress has considered legislation that would repeal or repeal and replace all or part of the ACA. While Congress has not passed comprehensive repeal legislation, several bills affecting the implementation of certain taxes under the ACA have passed. For example, in 2017, Congress enacted the Tax Act, which eliminated the tax-based shared responsibility payment imposed by the ACA on certain individuals who fail to maintain qualifying health coverage for all or part of a year, a process that is commonly referred to as the “individual mandate.” In addition, the 2020 federal spending package permanently eliminated, effective January 1, 2020, the ACA-mandated “Cadillac” tax on high-cost employer-sponsored health coverage and medical device tax and, effective January 1, 2021, also eliminated the health insurer tax. On December 14, 2018, a Texas U.S. District Court Judge ruled that the individual mandate is a critical and inseverable feature of the ACA, and therefore, because it was

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repealed as part of the Tax Act, the remaining provisions of the ACA are invalid as well. On December 18, 2019, the U.S. Court of Appeals for the 5th Circuit ruled that the individual mandate was unconstitutional and remanded the case back to the District Court to determine whether the remaining provisions of the ACA are invalid as well. In June 2021, the United States Supreme Court held that Texas and other challengers had no legal standing to challenge the ACA, dismissing the case without specifically ruling on the constitutionality of the ACA. Accordingly, the ACA remains in effect in its current form. It is unclear how this Supreme Court decision, future litigation, or healthcare measures promulgated by the Biden administration will impact our business, financial condition and results of operations. Complying with any new legislation or changes in healthcare regulation could be time-intensive and expensive, resulting in a material adverse effect on our business.

Other legislative changes have been proposed and adopted since the ACA was enacted. These changes include aggregate reductions to Medicare payments to providers of up to 2% per fiscal year, effective April 1, 2013, which will stay in effect through 2031, with the exception of a temporary suspension implemented under various COVID-19 relief legislation from May 1, 2020 through March 31, 2022, unless additional congressional action is taken. Under current legislation, the actual reduction in Medicare payments will vary from 1% in 2022 to up to 3% in the final fiscal year of this sequester. Moreover, there has recently been heightened governmental scrutiny over the manner in which manufacturers set prices for their marketed products, which has resulted in several Congressional inquiries and proposed and enacted legislation designed, among other things, to bring more transparency to product pricing, to review the relationship between pricing and manufacturer patient programs, and to reform government program reimbursement methodologies for pharmaceutical products. For example, in 2020, HHS and CMS issued various rules that are expected to impact, among others, price reductions from pharmaceutical manufacturers to plan sponsors under Part D, fee arrangements between pharmacy benefit managers and manufacturers, manufacturer price reporting requirements under the Medicaid Drug Rebate Program, including regulations that affect manufacturersponsored patient assistance programs subject to pharmacy benefit manager accumulator programs and Best Price reporting related to certain value-based purchasing arrangements, and manufacturer price reporting under Medicare Part B. Multiple lawsuits have been brought against HHS challenging various aspects of the rules. Under the American Rescue Plan Act of 2021, effective January 1, 2024, the statutory cap on Medicaid Drug Rebate Program rebates that manufacturers pay to state Medicaid programs will be eliminated. Elimination of this cap may require pharmaceutical manufacturers to pay more in rebates than it receives on the sale of products, which could have a material impact on our business. In addition, Congress is considering legislation that, if passed, could have significant impact on prices of prescription drugs covered by Medicare, including limitations on drug price increases and allowing Medicare to negotiate pricing for certain covered drug products. The impact of these regulations and any future healthcare measures and agency rules implemented by the Biden administration on us and the pharmaceutical industry as a whole is currently unknown. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability, or commercialize our product candidates if approved. Complying with any new legislation and regulatory changes could be time-intensive and expensive, resulting in a material adverse effect on our business.At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. For example, a number of states are considering or have recently enacted state drug price transparency and reporting laws that could substantially increase our compliance burdens and expose us to greater liability under such state laws once we begin commercialization after obtaining regulatory approval for any of our products.

It is possible that additional governmental action may be taken to address the COVID-19 pandemic. Furthermore, there has been increased interest by third party payors and governmental authorities in reference to pricing systems and publication of discounts and list prices.

Foreign Regulation

In addition to regulations in the United States, we will be subject to a variety of foreign regulations governing clinical trials and commercial sales and distribution of our product candidates to the extent we choose to develop or sell any product candidates outside of the United States. The approval process varies from country to country and the time

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may be longer or shorter than that required to obtain FDA approval. The requirements governing the conduct of clinical trials, regulatory approval for our products, pricing and reimbursement vary greatly from country to country.

European Union Drug Development

Similar to the United States, the various phases of preclinical and clinical research in the European Union are subject to significant regulatory controls. Although the European Union (EU) Clinical Trials Directive 2001/20/EC has sought to harmonize the EU clinical trials regulatory framework, setting out common rules for the control and authorization of clinical trials in the EU, the EU Member States have transposed and applied the provisions of the Directive differently. This has led to significant variations in the member state regimes. Under the current regime, before a clinical trial can be initiated, it must be approved in each of the EU countries where the trial is to be conducted by two distinct bodies: The National Competent Authority (NCA), and one or more Ethics Committees (ECs). Under the current regime all suspected unexpected serious adverse reactions to the investigated drug that occur during the clinical trial have to be reported to the NCA and ECs of the Member State where they occurred. The EU clinical trials legislation currently is undergoing a transition process mainly aimed at harmonizing and streamlining clinical-trial authorization, simplifying adverse-event reporting procedures, improving the supervision of clinical trials and increasing their transparency. The Clinical Trials Regulation EU No 536/2014 which replaced the Clinical Trials Directive entered into application on January 31, 2022, is intended to simplify the current rules for clinical trial authorization and standards of performance. For instance, there will be a streamlined application procedure via a single-entry point, a European Union portal and database.

European Union Drug Review and Approval

In the European Economic Area (EEA), which is comprised of the 27 Member States of the European Union and three European Free Trade Association States (Iceland, Liechtenstein, and Norway), medicinal products can only be commercialized after obtaining a Marketing Authorization (MA). There are two types of marketing authorizations.

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Under the above-described procedures, before granting the MA, EMA or the competent authorities of the Member States of the EEA make an assessment of the risk-benefit balance of the product on the basis of scientific criteria concerning its quality, safety and efficacy. Similar to the U.S. patent term-restoration, Supplementary Protection Certificates (SPCs) serve as an extension to a patent right in Europe for up to five years, subject to certain extension. SPCs apply to specific pharmaceutical products to offset the loss of patent protection due to the lengthy testing and clinical trials these products require prior to obtaining regulatory marketing approval. However, SPCs are not the only EU mechanism offering protection for a drug product beyond the patent expiry date. For example, under the EU exclusivity regime, an innovator company can qualify for eight years of data exclusivity, two years of market exclusivity during which generic companies can prepare and apply for marketing approval but cannot market their generic products, and an additional one year of market exclusivity for a new indication with significant clinical benefit over existing therapies.

In the EEA, marketing authorization applications for new medicinal products not authorized have to include the results of studies conducted in the pediatric population, in compliance with a pediatric investigation plan (PIP) agreed with the EMA’s Pediatric Committee (PDCO). The PIP sets out the timing and measures proposed to generate data to support a pediatric indication of the drug for which marketing authorization is being sought. The PDCO can grant a deferral of the obligation to implement some or all of the measures of the PIP until there are sufficient data to demonstrate the efficacy and safety of the product in adults. Further, the obligation to provide pediatric clinical trial data can be waived by the PDCO when these data is not needed or appropriate because the product is likely to be ineffective or unsafe in children, the disease or condition for which the product is intended occurs only in adult populations, or when the product does not represent a significant therapeutic benefit over existing treatments for pediatric patients. Once the marketing authorization is obtained in all Member States of the EU and study results are included in the product information, even when negative, the product is eligible for six months’ supplementary protection certificate extension.

Employees and Human Capital

As of December 31, 2021, we had 31 full-time employees. Of these employees, 23 are engaged in research or product development and clinical activities. None of our employees are represented by a labor union or covered by a collective bargaining agreement. We consider our relationship with our employees to be good.

Our human capital resources objectives include, as applicable, identifying, recruiting, retaining, incentivizing and integrating our existing and new employees, advisors and consultants. The principal purposes of our equity and cash incentive plans are to attract, retain and reward personnel through the granting of stock-based and cash-based compensation awards, in order to increase stockholder value and the success of our company by motivating such individuals to perform to the best of their abilities and achieve our objectives.

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Corporate Information

We were incorporated in Delaware in May 2017. Our principal executive offices are located at 3415 Colorado Ave., Boulder, Colorado 80303. Our telephone number is (720) 262-7002. Our website address is www.edgewisetx.com. We may use our website, press releases, public conference calls and public webcasts as means of disclosing material nonpublic information and for complying with our disclosure obligations under Regulation FD. Information contained on, or that can be accessed through, our website or any website is not incorporated by reference into this Form 10-K and should not be considered to be part of this Form 10-K unless expressly noted.

We may use our website (www.edgewisetx.com), press releases, public conference calls, public webcasts, Twitter and LinkedIn as means of disclosing material non-public information and for complying with our disclosure obligations under Regulation FD. We also make available on or through our website certain reports and amendments to those reports that we file with or furnish to the SEC in accordance with the Securities Exchange Act of 1934, as amended (Exchange Act). These include our Annual Reports on Form 10-K, our quarterly reports on Form 10-Q, and our current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act. We make this information available on or through our website free of charge as soon as reasonably practicable after we electronically file the information with, or furnish it to, the SEC. The SEC also maintains a website that contains our SEC filings. The address for the SEC website is https://www.sec.gov.

We use the Edgewise Therapeutics logo and other marks as trademarks in the United States and other countries. This periodic report contains references to our trademarks and service marks and to those belonging to other entities. Solely for convenience, trademarks and trade names referred to in this periodic report, including logos, artwork and other visual displays, may appear without the TM symbol, but such references are not intended to indicate in any way that we will not assert, to the fullest extent under applicable law, our rights or the rights of the applicable licensor to these trademarks and trade names. We do not intend our use or display of other entities’ trade names, trademarks or service marks to imply a relationship with, or endorsement or sponsorship of us by, any other entity.

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Item 1A. Risk Factors

Investing in our common stock involves a high degree of risk. You should carefully consider the risks described below, as well as the other information in this Annual Report and in our other public filings in evaluating our business. The occurrence of any of the events or developments described below could harm our business, financial condition, results of operations and growth prospects. In such an event, the market price of our common stock could decline, and you may lose all or part of your investment. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations and the market price of our common stock.

Risk Factors Summary

Investing in shares of our common stock involves a high degree of risk because our business is subject to numerous risks and uncertainties, as fully described below. The principal factors and uncertainties that make investing in shares of our common stock risky include, among others:

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Risks Related to Our Financial Position, Need for Additional Capital and Limited Operating History

We are early in our development efforts, with a limited operating history, and we have no products approved for commercial sale, which may make it difficult for you to evaluate our current business and likelihood of success and future viability.

We are an early clinical stage biopharmaceutical company with a limited operating history upon which you can evaluate our business and prospects. We are developing precision medicines for rare neuromuscular diseases which is an unproven and highly uncertain undertaking and involves a substantial degree of risk. We commenced operations in 2017, have no products approved for commercial sale and have not generated any revenue. Most of our product candidates are still in preclinical development and have never been tested in human subjects. We plan to initiate Phase 2 clinical trials for our lead product candidate, EDG-5506, and have not initiated clinical trials for any other product candidate. Since our inception in 2017, we have devoted substantially all of our focus and financial resources to discovering, identifying and developing potential product candidates, including advancing our development programs, conducting preclinical studies of our product candidates and initiating clinical trials, organizing and staffing our company, business planning, raising capital and securing related intellectual property rights.

We have not yet demonstrated our ability to obtain marketing approvals, manufacture a commercial-scale product or arrange for a third-party to do so on our behalf, or conduct sales and marketing activities necessary for successful product commercialization. As a result, it may be more difficult for investors to accurately predict our likelihood of success and viability than it could be if we had a longer operating history.

In addition, we may encounter unforeseen expenses, difficulties, complications, delays and other known and unknown factors and risks frequently experienced by clinical-stage biopharmaceutical companies in rapidly evolving fields. We also may need to transition from a company with a research and development focus to a company capable of supporting commercial activities. We have not yet demonstrated an ability to successfully overcome such risks and difficulties, or to make such a transition. If we do not adequately address these risks and difficulties or successfully make such a transition, our business will suffer.

We have not generated any revenue to date, have incurred significant net losses since our inception, and expect to continue to incur significant net losses for the foreseeable future.

We have incurred significant net losses since our inception, have not generated any revenue to date and have financed our operations principally through private placements of our convertible preferred stock. Our net loss was $42.8 million for the year ended December 31, 2021. As of December 31, 2021, we had an accumulated deficit of $77.0 million. Our lead product candidate, EDG-5506, recently completed a Phase 1 clinical trial. Our other programs are in preclinical discovery and research stages. As a result, we expect that it will be several years, if ever, before we receive approval to commercialize a product and generate revenue from product sales. Even if we succeed in receiving marketing approval for and commercializing one or more of our approved product candidates, we expect that we will continue to incur substantial research and development and other expenses in order to discover, develop and market additional potential products.

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We expect to continue to incur significant expenses and increasing operating losses for the foreseeable future. The net losses we incur may fluctuate significantly from quarter to quarter such that a period-to-period comparison of our results of operations may not be a good indication of our future performance, particularly since we expect our expenses to increase if and when our product candidates progress through clinical development as product candidates in later stages of clinical development generally have higher development costs than those in earlier stages, primarily due to the increased size and duration of later-stage clinical trials. The size of our future net losses will depend, in part, on the rate of future growth of our expenses and our ability to generate revenue. Our prior losses and expected future losses have had and will continue to have an adverse effect on our working capital, our ability to fund the development of our product candidates and our ability to achieve and maintain profitability and the performance of our stock.

Our ability to generate revenue and achieve profitability depends significantly on our ability to achieve several objectives relating to the discovery, development and commercialization of our product candidates, if approved.

Our business depends entirely on the successful discovery, development, regulatory approval and commercialization of product candidates. We have no products approved for commercial sale and do not anticipate generating any revenue from product sales for the next several years, if ever. Our ability to generate revenue and achieve profitability depends significantly on our ability, or any future collaborator’s ability, to achieve several objectives, including:

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We may never be successful in achieving our objectives and, even if we do, may never generate revenue that is significant or large enough to achieve profitability. If we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our failure to become and remain profitable would decrease the value of our company and could impair our ability to maintain or further our research and development efforts, raise additional necessary capital, grow our business and continue our operations.

We may also experience delays in developing a sustainable, reproducible and scalable manufacturing process or transferring that process to commercial partners, which may prevent us from completing our clinical trials or commercializing our product candidates on a timely or profitable basis, if at all. Changes in the manufacturing process or facilities will require further comparability analysis and approval by the FDA before implementation, which could delay our clinical trials and product candidate development, and could require additional clinical trials, including bridging studies, to demonstrate consistent and continued safety and efficacy.

We will require substantial additional capital to finance our operations. If we are unable to raise such capital when needed, or on acceptable terms, we may be forced to delay, reduce and/or eliminate one or more of our research and drug development programs or future commercialization efforts.

As of December 31, 2021, we had $280.8 million in cash, cash equivalents and marketable securities. We expect our current cash and cash equivalents, will be sufficient to fund our current operating plan for at least the next 12 months. Our estimate as to how long we expect our existing cash and cash equivalents, to be able to continue to fund our operations is based on assumptions that may prove to be wrong, and we could use our available capital resources sooner than we currently expect. Changing circumstances, some of which may be

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beyond our control, could cause us to consume capital significantly faster than we currently anticipate, and we may need to seek additional funds sooner than planned.

Developing pharmaceutical products, including conducting preclinical studies and clinical trials, is a very time-consuming, expensive and uncertain process that takes years to complete. Our operations have consumed substantial amounts of cash since inception, and we expect our expenses to increase in connection with our ongoing activities, particularly as we conduct clinical trials of, and seek marketing approval for, EDG-5506 and advance our other programs as well as develop our proprietary drug discovery platform. Even if one or more of the product candidates that we develop is approved for commercial sale, we anticipate incurring significant costs associated with sales, marketing, manufacturing and distribution activities. Our expenses could increase beyond expectations if we are required by the FDA, the European Medicines Agency (EMA) or other regulatory agencies to perform clinical trials or preclinical studies in addition to those that we currently anticipate. Other unanticipated costs may also arise. Because the design and outcome of our planned and anticipated preclinical studies and clinical trials are highly uncertain, we cannot reasonably estimate the actual amount of resources and funding that will be necessary to successfully complete the development and commercialization of any product candidate we develop. We are not permitted to market or promote EDG-5506, or any other product candidate, before we receive marketing approval from the FDA. We also expect to incur costs associated with operating as a public company. Our cash and cash equivalents will not be sufficient for us to fund any of our product candidates through regulatory approval, and we will need to raise additional capital to complete the development and commercialization of our products. Accordingly, we will need to obtain substantial additional funding in order to continue our operations.

Our future capital requirements will depend on may factors, including, but not limited to:

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A change in the outcome of any of these or other factors with respect to the development of any of our product candidates could significantly change the costs and timing associated with the development of that product candidate.

We may seek additional capital due to favorable market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans. Attempting to secure additional financing may divert our management from our day-to-day activities, which may adversely affect our ability to develop our product candidates. Our failure to raise capital as and when needed or on acceptable terms would have a negative impact on our financial condition and our ability to pursue our business strategy, and we may have to delay, reduce the scope of, suspend or eliminate one or more of our research-stage programs, clinical trials or future commercialization efforts.

Our operations and financial results could be adversely impacted by the COVID-19 pandemic in the United States and the rest of the world.

In March 2020, the World Health Organization declared the coronavirus disease (COVID-19) outbreak a global pandemic. To limit the spread of COVID-19, governments have taken various actions including the issuance of stay-at-home orders and physical distancing guidelines. Accordingly, businesses have adjusted, reduced or suspended operating activities. Disruptions caused by the COVID-19 pandemic, including the effects of the stay-at-home orders and work-from-home policies, have impacted productivity, have resulted in increased operational expenses, certain adjustments to the operations of our clinical trial, delays in the enrollment of new patients at our clinical trial site, and delays in certain supply chain activities and collecting and analyzing data from patients in our clinical trial. We may experience disruptions as a result of COVID-19 that could severely impact our business and clinical trials, including:

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We will continue to assess the impact that COVID-19 may have on our ability to effectively conduct our business operations as planned and there can be no assurance that we will be able to avoid a material impact on our business from the spread of COVID-19 or its consequences, including disruption to our business and downturns in business sentiment generally or in our industry.

Additionally, certain third parties with whom we engage, including our collaborators, contract organizations, third-party manufacturers, suppliers, clinical trial sites, regulators and other third parties with whom we conduct business are similarly adjusting their operations and assessing their capacity in light of the COVID-19 pandemic. If these third parties experience shutdowns or continued business disruptions, our ability to conduct our business in the manner and on the timelines presently planned could be materially and negatively impacted. For example, our Phase 1 clinical trial of EDG-5506 was originally scheduled to begin in August 2020 at a trial unit in Nebraska. Just prior to this planned start, the CRO that operates that trial unit informed us that COVID-19 related issues would delay trial initiation for at least four months, which required us to locate, contract with, and prepare for trial initiation at a new trial site in San Antonio, Texas operated by a different CRO. In 2020, we switched from an international third-party manufacturer to a third-party manufacturer based in the United States to minimize manufacturing supply chain disruptions as a result of COVID-19. Changing our third-party manufacturer could result in delays in our manufacturing supply chain which could delay or otherwise impact our development of EDG-5506 and result in increased costs related to EDG-5506. Additionally, certain preclinical studies for our discovery research programs are conducted by CROs, which could be discontinued or delayed as a result of the pandemic. We could also experience delays if our suppliers are delayed in delivering raw materials to our third-party manufacturers. It is likely that the disproportionate impact of COVID-19 on hospitals and clinical sites will have an impact on recruitment and retention for our clinical trials. For example, we experienced delays in enrolling patients for our Phase 1 clinical trial for EDG-5506. In addition, our clinical trial sites could experience delays in collecting, receiving and analyzing data from patients enrolled in our clinical trial for EDG-5506 due to limited staff at such sites, limitation or suspension of on-site visits by patients, or patients’ reluctance to visit the clinical trial sites during the pandemic. As a result, research and development expenses and general and administrative expenses may vary significantly if there is an increased impact from COVID-19 on the costs and timing associated with the conduct of our clinical trial and other related business activities.

As we continue to actively advance our clinical programs and discovery and research programs, we are assessing the impact of the COVID-19 pandemic on each of our programs, expected timelines and costs on an ongoing basis. In light of ongoing developments relating to the COVID-19 pandemic, the focus of healthcare providers and hospitals on fighting the virus, and consistent with the FDA’s industry guidance for conducting

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clinical trials during the COVID-19 pandemic issued in March 2020, as updated subsequently, as well as other guidance on biopharmaceutical manufacturing and inspections during the pandemic, among others, we and our CROs may be required to implement new clinical trial procedures and policies or make certain adjustments to our clinical trial. We and our CROs have made certain adjustments to the operation of such trials in an effort to ensure the monitoring and safety of patients and minimize risks to trial integrity during the pandemic in accordance with the guidance issued by the FDA on June 19, 2020 on good manufacturing practice considerations for responding to COVID-19 infection in employees in biopharmaceutical products manufacturing and generally, and may need to make further adjustments in the future. Other COVID-related guidance recently released by FDA that apply to us and our third-party manufacturers include guidance addressing cGMP considerations for responding to COVID-19 infections in employees and statistical considerations for clinical trials during the COVID-19 public health emergency. Many of these adjustments are new and untested, may not be effective, and may have unforeseen effects on the enrollment, progress and completion of these trials and the findings from these trials. While we are currently continuing our clinical trial and seeking to add new clinical trial sites, we may not be successful in adding trial sites, may experience delays in patient enrollment or in the progression of our clinical trial, may need to suspend our clinical trial, and may encounter other negative impacts to our trials, due to the effects of the COVID-19 pandemic.

The global outbreak of COVID-19, including COVID-19 variants, continues to rapidly evolve. The extent to which the COVID-19 pandemic impacts our business will depend on future developments such as the rate of the spread of the disease including any COVID-19 variants, vaccination rates, travel restrictions and social distancing in the United States and other countries, business closures or business disruptions and the effectiveness of actions taken in the United States and other countries to contain and treat the disease and to address its impact, including on financial markets or otherwise. While the extent of the impact of the current COVID-19 pandemic on our business and financial results is uncertain, a continued and prolonged public health crisis such as the COVID-19 pandemic could have a material negative impact on our business, financial condition and operating results.

To the extent the COVID-19 pandemic adversely affects our business, financial condition and operating results, it may also have the effect of heightening many of the risks described in this “Risk Factors” section.

Raising additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish rights to our technologies or product candidates.

Until such time, if ever, as we can generate substantial revenues, we will be required to obtain further funding through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources, which may dilute our stockholders or restrict our operating activities. We do not have any committed external source of funds. Adequate additional financing may not be available to us on acceptable terms, or at all. To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be diluted, and the terms may include liquidation or other preferences that adversely affect your rights as a stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making acquisitions, engaging in acquisition, merger or collaboration transactions, selling or licensing our assets, making capital expenditures, redeeming our stock, making certain investments, declaring dividends or encumbering our assets to secure future indebtedness. Such restrictions could adversely impact our ability to conduct our operations and execute our business plan.

If we raise additional funds through upfront payments or milestone payments pursuant to strategic collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

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Our ability to utilize our net operating loss carryforwards and certain other tax attributes to offset future taxable income may be limited.

Our net operating loss (NOL) carryforwards may be unavailable to offset future taxable income because of restrictions under U.S. tax law. Our NOLs generated in tax years ending on or prior to December 31, 2017 are only permitted to be carried forward for 20 taxable years under applicable U.S. federal tax law, and therefore could expire unused. Under tax legislation commonly referred to as the Tax Cuts and Jobs Act (Tax Act) as amended by the Coronavirus Aid, Relief, and Economic Security Act (CARES Act), our federal NOLs generated in tax years beginning after December 31, 2017 may be carried forward indefinitely, but for taxable years beginning after December 31, 2020, the deductibility of federal NOLs generated in tax years beginning after December 31, 2017 is limited to 80% of our current year taxable income. It is uncertain if and to what extent various states will conform to the Tax Act. As of December 31, 2021, we had available NOL carry forwards of approximately $69.4 million, of which $68.2 million do not expire.

In addition, under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended (Code), if a corporation undergoes an “ownership change” (generally defined as a cumulative change in the corporation’s ownership by “5-percent shareholders” that exceeds 50 percentage points over a rolling three-year period), the corporation’s ability to use its pre-change NOLs and certain other pre-change tax attributes to offset its post-change taxable income may be limited. Similar rules may apply under state tax laws. We may have experienced such ownership changes in the past, and we may experience ownership changes in the future as a result of subsequent shifts in our stock ownership, some of which are outside our control. We have not conducted any studies to determine annual limitations, if any, that could result from such changes in the ownership. Our ability to utilize our NOLs and certain other tax attributes could be limited by an “ownership change” as described above and consequently, we may not be able to utilize a material portion of our NOLs and certain other tax attributes, which could have a material adverse effect on our cash flows and results of operations.

Risks Related to the Discovery, Development and Commercialization of Our Product Candidates

We are substantially dependent on the success of our lead product candidate, EDG-5506, which recently completed a Phase 1 clinical trial. If we are unable to complete further development of, obtain approval for and commercialize EDG-5506 for one or more indications in a timely manner, our business will be harmed.

Our future success is dependent on our ability to timely and successfully complete clinical trials, obtain marketing approval for and successfully commercialize EDG-5506, our lead product candidate. We are investing the majority of our efforts and financial resources in the research and development of EDG-5506. In October 2020, we initiated a Phase 1 clinical trial to evaluate the safety and tolerability of EDG-5506 in HVs. This was our first clinical trial, and EDG-5506 had not previously been tested in humans. In addition, we are pursuing EDG-5506 in BMD for which there are no animal models of the human disease and therefore the animal models may not be predictive for human disease outcomes. We announced in October 2021 positive topline results from the MAD portion of a first-in-human Phase 1, HV clinical trial. In addition, we announced in January 2022 positive topline results from the BMD, or Phase 1b, portion of a first-in-human Phase 1 clinical trial assessing the safety, tolerability, PK and PD of EDG-5506.

However, EDG-5506 will require additional clinical development, expansion of manufacturing capabilities, marketing approval from government regulators, substantial investment and significant marketing efforts before we can generate any revenues from product sales. We are not permitted to market or promote EDG-5506, or any other product candidate, before we receive marketing approval from the FDA and comparable foreign regulatory authorities, and we may never receive such marketing approvals.

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The success of EDG-5506 will depend on several factors, including the following:

We do not have complete control over many of these factors, including certain aspects of clinical development and the regulatory submission process, potential threats to our intellectual property rights and the manufacturing, marketing, distribution and sales efforts of any future collaborator. If we are not successful with respect to one or more of these factors in a timely manner or at all, we could experience significant delays or an inability to successfully commercialize EDG-5506, which would materially harm our business. If we do not receive marketing approvals for EDG-5506, we may not be able to continue our operations.

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In addition to EDG-5506, our prospects depend in part upon developing and commercializing product candidates from our EDG-5440 and EDG-002 programs and discovering, developing and commercializing product candidates in future programs, which may fail or suffer delays that adversely affect their commercial viability.

Our future operating results are dependent on our ability to successfully develop, obtain regulatory approval for and commercialize product candidates from our research programs, including EDG-5440 and EDG-002, in addition to our lead product candidate, EDG-5506. However, research and development related to novel therapeutics is inherently risky. A product candidate can unexpectedly fail at any stage of preclinical and/or clinical development. The historical failure rate for product candidates is high due to risks relating to safety, efficacy, clinical execution, changing standards of medical care and other unpredictable variables. The results from preclinical testing or early clinical trials of a product candidate may not be predictive of the results that will be obtained in later stage clinical trials of the product candidate.

The success of other product candidates we may develop will depend on many factors, including the following:

Even if we successfully discover and advance any other product candidates into clinical development, their success will be subject to all of the clinical, regulatory and commercial risks described elsewhere in this “Risk Factors” section. Accordingly, we cannot assure you that we will ever be able to discover, develop, obtain regulatory approval of, commercialize or generate significant revenue from any product candidates.

Clinical drug development involves a lengthy and expensive process with an uncertain outcome. The clinical trials of our product candidates may not demonstrate safety and efficacy to the satisfaction of the FDA, EMA or other comparable foreign regulatory authorities or otherwise produce positive results and the results of preclinical studies and early clinical trials may not be predictive of future results. We may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and commercialization of our product candidates.

Although we announced in October 2021 positive topline results from the MAD portion of a first-in-human Phase 1, HV clinical trial and we announced in January 2022 positive topline results from the BMD, or Phase 1b, portion of a first-in-human Phase 1 clinical trial assessing the safety, tolerability, PK and PD of EDG-5506, our lead product candidate’s risk of failure is high. It is impossible to predict when or if EDG-5506 or any other product candidate that we develop will prove effective or safe in humans or will receive marketing approval. Before obtaining marketing approval from the FDA, EMA or other comparable foreign regulatory authorities for the sale of our product candidates, we must complete preclinical development and extensive clinical trials to demonstrate with substantial evidence the safety and efficacy of such product candidates.

Clinical testing is expensive, difficult to design and implement, can take many years to complete and its ultimate outcome is uncertain. We cannot guarantee that any of our clinical trials will be conducted as planned or completed on schedule, or at all. Clinical trials can fail at any stage of testing and failure may result from a multitude of factors, including, among other things, flaws in study design, dose selection issues, placebo effects,

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patient enrollment criteria and failure to demonstrate favorable safety or efficacy traits. The outcome of preclinical studies and early-stage clinical trials may not be predictive of the success of later clinical trials. For example, our product candidates may fail to show the desired safety and efficacy in clinical development despite positive results in preclinical studies or having successfully advanced through initial clinical trials. We may also discover that the half-life of our product candidates renders them unsuitable for the therapeutic applications we have chosen. As a result, we cannot assure you that any clinical trials that we conduct will demonstrate consistent or adequate efficacy and safety to support marketing approval.

Many companies in the pharmaceutical and biotechnology industries have suffered significant setbacks in late-stage clinical trials even after achieving promising results in preclinical testing and earlier-stage clinical trials, and we cannot be certain that we will not face similar setbacks. Moreover, preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that have believed their product candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval of their drugs. Furthermore, the failure of any of our product candidates to demonstrate safety and efficacy in any clinical trial could negatively impact the perception of our other product candidates and/or cause the FDA or other regulatory authorities to require additional testing before approving any of our product candidates.

We have experienced delays in completing our ongoing clinical trial and may experience additional delays in initiating or completing additional clinical trials including delays as a result of COVID-19. We may also experience numerous unforeseen events during, or as a result of, clinical trials that could delay or prevent receipt of marketing approval or our ability to commercialize our product candidates, including:

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If we are required to conduct additional clinical trials or other testing of our product candidates beyond those that we currently contemplate, if we are unable to successfully complete clinical trials of our product candidates or other testing in a timely manner, if the results of these trials or tests are not positive or are only modestly positive or if there are safety concerns, we may incur unplanned costs, be delayed in seeking and obtaining marketing approval, if we receive such approval at all, receive more limited or restrictive marketing approval, be subject to additional post-marketing testing requirements or have the drug removed from the market after obtaining marketing approval.

Moreover, in the future, principal investigators for our clinical trials may serve as scientific advisors or consultants to us from time to time and receive compensation in connection with such services. Under certain circumstances, we may be required to report some of these relationships to the FDA or comparable foreign regulatory authorities. The FDA or comparable foreign regulatory authority may conclude that a financial relationship between us and a principal investigator has created a conflict of interest or otherwise affected interpretation of the study. The FDA or comparable foreign regulatory authority may therefore question the integrity of the data generated at the applicable clinical trial site and the utility of the clinical trial itself may be jeopardized. This could result in a delay in approval, or rejection, of our marketing applications by the FDA or comparable foreign regulatory authority, as the case may be, and may ultimately lead to the denial of marketing approval of one or more of our product candidates.

If we experience delays in the completion of, or termination of, any clinical trial of our product candidates, the commercial prospects of our product candidates will be harmed, and our ability to generate product revenues from any of these product candidates will be delayed. Moreover, our product development costs will also increase if we experience delays in preclinical studies or clinical trials or in obtaining marketing approvals. We do not know whether any of our preclinical studies or clinical trials will begin as planned, will need to be restructured or will be completed on schedule, or at all. We may also determine to change the design or protocol of one or more of our clinical trials, which could result in increased costs and expenses and/or delays. Any delays in completing our clinical trials will increase our costs, slow down our product candidate development and approval process and jeopardize our ability to commence product sales and generate revenues.

In addition, many of the factors that cause, or lead to, termination or suspension of, or a delay in the commencement or completion of, clinical trials may also ultimately lead to the denial of regulatory approval of a product candidate. Any delays to our clinical trials that occur as a result could shorten any period during which we

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may have the exclusive right to commercialize our product candidates and our competitors may be able to bring products to market before we do, and the commercial viability of our product candidates could be significantly reduced. Any of these occurrences may harm our business, financial condition and prospects significantly.

Our product candidates may cause serious adverse events, toxicities or other undesirable side effects when used alone or in combination with other approved products or investigational new drugs that may result in a safety profile that could prevent regulatory approval, prevent market acceptance, limit their commercial potential or result in significant negative consequences.

We are developing novel biologically active small molecules for muscle related diseases. As a result, there is uncertainty as to the safety profile of product candidates we may develop. In addition, our product candidates may be used in combination with certain other therapies, including corticosteroids, which may have undesirable side effects. If our product candidates are associated with undesirable side effects or have unexpected characteristics in preclinical studies or clinical trials when used alone or in combination with other approved products or investigational new drugs we may need to interrupt, delay or abandon their development or limit development to more narrow uses or subpopulations in which the undesirable side effects or other characteristics are less prevalent, less severe or more acceptable from a risk-benefit perspective. Treatment-related side effects could also affect patient recruitment or the ability of enrolled subjects to complete the trial or result in potential product liability claims. Any of these occurrences may prevent us from achieving or maintaining market acceptance of the affected product candidate and may harm our business, financial condition and prospects significantly.

Patients in our ongoing and planned clinical trials may in the future suffer other adverse events or other side effects not observed in our preclinical studies or previous clinical trials. For example, in the single ascending dose trial for EDG-5506, dose limiting somnolence was observed at the 135 mg level. In addition, in the multiple ascending dose trial for EDG-5506, the most common adverse events were dizziness and somnolence, all of which were mild and transient and in the Phase 1b clinical trial, the most common adverse event was dizziness, which was mild and transient. EDG-5506 or other product candidates may be used in pediatric populations for which safety concerns may be particularly scrutinized by regulatory agencies. In addition, if EDG-5506 is studied in combination with other therapies, it may exacerbate adverse events associated with the therapy. Patients treated with EDG-5506 or our other product candidates may also be undergoing other therapies which can cause side effects or adverse events that are unrelated to our product candidate but may still impact the success of our clinical trials. The inclusion of critically ill patients in our clinical trials may result in deaths or other adverse medical events due to other therapies or medications that such patients may be using or due to the gravity of such patients’ illnesses. For example, it is expected that some of the patients enrolled in our EDG-5506 clinical trial will die or experience major clinical events either during the course of our clinical trials or after participating in such trials.

If further serious adverse events or other side effects are observed in any of our current or future clinical trials, we may have difficulty recruiting patients to the clinical trials, patients may drop out of our trials, or we may be required to abandon the trials or our development efforts of that product candidate altogether. We, the FDA, EMA, other comparable regulatory authorities or an IRB may suspend clinical trials of a product candidate at any time for various reasons, including a belief that subjects in such trials are being exposed to unacceptable health risks or adverse side effects. Some potential therapeutics developed in the biotechnology industry that initially showed therapeutic promise in early-stage trials have later been found to cause side effects that prevented their further development. Even if the side effects do not preclude the product candidate from obtaining or maintaining marketing approval, undesirable side effects may inhibit market acceptance due to its tolerability versus other therapies. Any of these developments could materially harm our business, financial condition and prospects. Further, if any of our product candidates obtains marketing approval, toxicities associated with such product candidates previously not seen during clinical testing may also develop after such approval and lead to a requirement to conduct additional clinical safety trials, additional contraindications, warnings and precautions being added to the drug label, significant restrictions on the use of the product or the withdrawal of the product from the market. We cannot predict whether our product candidates will cause toxicities in humans that would preclude or lead to the revocation of regulatory approval based on preclinical studies or early stage clinical trials.

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The outcome of preclinical testing and early clinical trials may not be predictive of the success of later clinical trials, and the results of our clinical trials may not satisfy the requirements of the FDA, EMA or other comparable foreign regulatory authorities.

We will be required to demonstrate with substantial evidence through well-controlled clinical trials that our product candidates are safe and effective for use in a diverse population before we can seek marketing approvals for their commercial sale. Success in preclinical studies and early-stage clinical trials does not mean that future clinical trials will be successful. Although we announced in October 2021 positive topline results from the MAD portion of a first-in-human Phase 1, HV clinical trial and we announced in January 2022 positive topline results from the BMD, or Phase 1b, portion of a first-in-human Phase 1 clinical trial assessing the safety, tolerability, PK and PD of EDG-5506, we do not know whether EDG-5506 will perform in current or future clinical trials as EDG-5506 has performed in preclinical studies or earlier clinical trials, nor do we know whether any product candidate in our EDG-5440 and EDG-002 programs will perform in current or future preclinical studies or future clinical trials as it has in prior preclinical studies. Product candidates in clinical trials may fail to demonstrate sufficient safety and efficacy to the satisfaction of the FDA, EMA and other comparable foreign regulatory authorities despite having progressed through preclinical studies. Regulatory authorities may also limit the scope of later-stage trials until we have demonstrated satisfactory safety, which could delay regulatory approval, limit the size of the patient population to which we may market our product candidates, or prevent regulatory approval.

In some instances, there can be significant variability in safety and efficacy results between different clinical trials of the same product candidate due to numerous factors, including changes in trial protocols, differences in size and type of the patient populations, differences in and adherence to the dose and dosing regimen and other trial protocols and the rate of dropout among clinical trial participants. Patients treated with our product candidates may also be undergoing other therapies and may be using other approved products or investigational new drugs, which can cause side effects or adverse events that are unrelated to our product candidates. As a result, assessments of efficacy can vary widely for a particular patient, and from patient to patient and site to site within a clinical trial. This subjectivity can increase the uncertainty of, and adversely impact, our clinical trial outcomes.

We do not know whether any clinical trials we may conduct will demonstrate consistent or adequate efficacy and safety sufficient to obtain approval to market any of our product candidates.

If we experience delays or difficulties in the enrollment and/or maintenance of patients in clinical trials, our regulatory submissions or receipt of necessary marketing approvals could be delayed or prevented.

We may not be able to initiate or continue clinical trials for our product candidates if we are unable to locate and enroll a sufficient number of eligible patients to participate in these trials to such trial’s conclusion as required by the FDA, EMA or other comparable foreign regulatory authorities. Patient enrollment is a significant factor in the timing of clinical trials. Our ability to enroll eligible patients may be limited or may result in slower enrollment than we anticipate.

Currently, we are conducting our open-label ARCH study of EDG-5506 at a single clinical trial site. Our planned Phase 2 trials will be conducted at multiple sites. We may experience delays if our clinical trial sites limits their onsite staff or temporarily closes as a result of the COVID-19 pandemic. In addition, patients may not be able to visit clinical trial sites for dosing or data collection purposes due to limitations on travel and physical distancing imposed or recommended by federal or state governments or patients’ reluctance to visit the clinical trial sites during the pandemic. These factors resulting from the COVID-19 pandemic could delay the anticipated readouts from our EDG-5506 clinical trial and our regulatory submissions.

We will be initiating an industry-sponsored, global, prospective registry investigating the natural history of adults with BMD aged 18 years and older. However, we may not be successful in achieving our goal of establishing natural history reference data points and identifying future eligibility for recruitment into our planned registrational trial in BMD.

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We are developing product candidates for rare muscle disorders with limited patient pools from which to draw for clinical trials. Such trials may be difficult to enroll and the lack of data on these patients may negatively impact the approvability of EDG-5506. We also may encounter difficulties in identifying and enrolling subjects with a stage of disease appropriate for our planned clinical trials and monitoring such subjects adequately during and after treatment. We may not be able to initiate or continue clinical trials if we are unable to locate a sufficient number of eligible subjects to participate in the clinical trials required by the FDA or comparable foreign regulatory authorities. In addition, the process of finding and diagnosing subjects may prove costly. Further, the treating physicians in our clinical trials may also use their medical discretion in advising patients enrolled in our clinical trials to withdraw from our studies to try alternative therapies.

We expect patient enrollment to be affected because our competitors have ongoing clinical trials for programs that are under development for the same indications as our product candidates, and patients who would otherwise be eligible for our clinical trials could instead enroll in clinical trials of our competitors’ programs. Patient enrollment for our current or any future clinical trials may be affected by other factors, including:

Our inability to enroll a sufficient number of patients for our clinical trials would result in significant delays or may require us to abandon one or more clinical trials altogether. Enrollment delays in our clinical trials may result in increased development costs for our product candidates and jeopardize our ability to obtain marketing approval for the sale of our product candidates. Furthermore, even if we are able to enroll a sufficient number of patients for our clinical trials, we may have difficulty maintaining participation in our clinical trials through the treatment and any follow-up periods.

We have limited resources and are currently focusing the majority of our efforts on developing EDG-5506 for particular indications. As a result, we may fail to capitalize on other indications or product candidates that may ultimately have proven to be more profitable.

We are currently focusing the majority of our resources and efforts on developing EDG-5506. As a result, because we have limited resources, we may forgo or delay the pursuit of opportunities for other indications or with

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other product candidates that may have greater commercial potential including product candidates from our EDG-002 program. In addition, while we currently have multiple compounds in our programs, we are focusing our efforts on select product candidates from each of these programs to develop as lead product candidates in each program. Our resource allocation decisions may cause us to fail to capitalize on viable commercial drugs or profitable market opportunities. Our spending on current and future research and development activities for EDG-5506, EDG-5440 and our EDG-002 program may not yield any commercially viable products. If we do not accurately evaluate the commercial potential or target markets for EDG-5506 or the product candidates we are currently researching, such as EDG-5440 or those from our EDG-002 program, we may relinquish valuable rights to our product candidates or programs through collaboration, licensing or other strategic arrangements in cases in which it would have been more advantageous for us to retain sole development and commercialization rights to such product candidate or program.

We face significant competition and if our competitors develop and market technologies or products more rapidly than we do or that are more effective, safer or less expensive than the products we develop, our commercial opportunities will be negatively impacted.

The biotechnology and biopharmaceutical industries are characterized by rapidly advancing technologies, intense competition and a strong emphasis on proprietary and novel products and product candidates. Our competitors have developed, are developing or may develop products, product candidates and processes competitive with our product candidates. Any product candidates that we successfully develop and commercialize will compete with existing therapies and new therapies that may become available in the future. We believe that a significant number of products are currently under development, and may become commercially available in the future, for the treatment of conditions for which we may attempt to develop product candidates.

We have competitors both in the United States and internationally, including major multinational pharmaceutical companies, established biotechnology companies, specialty pharmaceutical companies, emerging and start-up companies, universities and other research institutions. We also compete with other organizations to recruit management, scientists and clinical development personnel, which could negatively affect our level of expertise and our ability to execute our business plan. We will also face competition in establishing clinical trial sites, enrolling subjects for clinical trials and in identifying and in-licensing new product candidates.

We expect to face competition from existing products and products in development for each of our programs. Currently, approximately 70% of patients with DMD are treated with corticosteroids to manage the inflammatory component of the disease. EMFLAZA (deflazacort) is an FDA-approved corticosteroid marketed by PTC Therapeutics, Inc. and prednisone is also FDA-approved and is marketed by multiple companies. In March 2021, ReveraGen Biopharma in collaboration with Santhera Pharmaceuticals, released data from a Phase 2b clinical trial with vamorolone, a steroid therapy, supporting its use as a potential therapy for DMD. In addition, there are four FDA-approved exon skipping drugs: EXONDYS 51 (eteplirsen), AMONDYS 45 (casimersen) and VYONDYS 53 (golodirsen), which are naked PMOs approved for the treatment of DMD patients amenable to Exon 51, Exon 45 and Exon 53 skipping, respectively, and are marketed by Sarepta Therapeutics, Inc., and VILTEPSO (vitolarsen), a naked PMO approved for the treatment of DMD patients amenable to Exon 53 skipping, which is marketed by Nippon Shinyaku Co. Ltd. Companies focused on developing treatments for DMD that target dystrophin mechanisms include Sarepta Therapeutics with SRP-5051, a peptide-linked PMO currently being evaluated in a Phase 2 clinical trial for patients amenable to Exon 51 skipping, PTC Therapeutics with ataluren, a small molecule targeting nonsense mutations in a Phase 3 clinical trial, Avidity Biosciences, Inc., which is in preclinical development with an antibody oligonucleotide conjugate that targets dystrophin production, Dyne Therapeutics which announced submission of an IND application to initiate a clinical trial with their proprietary antigen-binding oligonucleotide linker technology targeting patients with mutations amenable to skipping Exon 51 and Entrada Therapeutics, Inc. which is in preclinical development with oligonucleotides that are designed to promote the skipping of exon mutations associated with DMD. In addition, several companies are developing gene therapies to treat DMD, including Genethon Company (GNT-0004), Pfizer Inc. (PF-06939926), Sarepta Therapeutics (SRP-9001 and Galgt2 gene therapy program), and Solid Biosciences Inc. (SGT-001). Gene editing treatments that are in preclinical development are also being pursued by Vertex and Sarepta Therapeutics. We are also aware of several companies targeting non-dystrophin mechanisms for the treatment of DMD. Moreover, Epirium Bio is developing a synthetic compound that targets cellular energetics and muscle regeneration as a potential therapeutic for BMD.

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Recently, Italfarmaco released top line Phase 2 data for Givinostat the company’s proprietary histone deacetylase (HDAC) inhibitor for BMD. Givinostat did not show a significant difference in the primary endpoint compared to placebo. The future of this program in BMD is uncertain.

Many of these current and potential competitors have significantly greater financial, manufacturing, marketing, drug development, technical and human resources and commercial expertise than we do. Large pharmaceutical and biotechnology companies, in particular, have extensive experience in clinical testing, obtaining regulatory approvals, recruiting patients and manufacturing biotechnology products. These companies also have significantly greater research and marketing capabilities than we do and may also have products that have been approved or are in late stages of development, and collaborative arrangements in our target markets with leading companies and research institutions. Established pharmaceutical and biotechnology companies may also invest heavily to accelerate discovery and development of novel compounds or to in-license novel compounds that could make the product candidates that we develop obsolete. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies, as well as in acquiring technologies complementary to, or necessary for, our programs. As a result of all of these factors, our competitors may succeed in obtaining approval from the FDA, EMA or other comparable foreign regulatory authorities or in discovering, developing and commercializing products in our field before we do.

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective, have fewer side effects, are more convenient, have a broader label, are marketed more effectively, are more widely reimbursed or are less expensive than any products that we may develop. Our competitors also may obtain marketing approval from the FDA, EMA or other comparable foreign regulatory authorities for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market. Even if the product candidates we develop achieve marketing approval, they may be priced at a significant premium over competitive products if any have been approved by then, resulting in reduced competitiveness. Technological advances or products developed by our competitors may render our technologies or product candidates obsolete, less competitive or not economical. If we are unable to compete effectively, our opportunity to generate revenue from the sale of our products we may develop, if approved, could be adversely affected.

Interim, topline and preliminary data from our clinical trials that we announce or publish may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data.

From time to time, we may publicly disclose preliminary, interim or topline data from our clinical trials, such as the data from our planned Phase 2 clinical trials of EDG-5506. These interim updates are based on a preliminary analysis of then-available data, and the results and related findings and conclusions are subject to change following a more comprehensive review of the data related to the particular study or trial. We also make assumptions, estimations, calculations and conclusions as part of our analyses of data, and we may not have received or had the opportunity to fully and carefully evaluate all data. As a result, the topline results that we report may differ from future results of the same studies, or different conclusions or considerations may qualify such results, once additional data have been received and fully evaluated. Topline data also remain subject to audit and verification procedures that may result in the final data being materially different from the preliminary data we previously published. As a result, topline data should be viewed with caution until the final data are available. In addition, we may report interim analyses of only certain endpoints rather than all endpoints. Interim data from clinical trials that we may complete are subject to the risk that one or more of the clinical outcomes may materially change as patient enrollment continues and more patient data become available. Adverse changes between interim data and final data could significantly harm our business and prospects. Further, additional disclosure of interim data by us or by our competitors in the future could result in volatility in the price of our common stock.

Further, others, including regulatory agencies, may not accept or agree with our assumptions, estimates, calculations, conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the value of the particular program, the approvability or commercialization of the particular product candidate or product and our company in general. In addition, the information we choose to publicly disclose

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regarding a particular study or clinical trial is based on what is typically extensive information, and you or others may not agree with what we determine is material or otherwise appropriate information to include in our disclosure. If the preliminary or topline data that we report differ from late, final or actual results, or if others, including regulatory authorities, disagree with the conclusions reached, our ability to obtain approval for, and commercialize, EDG-5506 or any other product candidates may be harmed, which could harm our business, financial condition, results of operations and prospects.

We may not be successful in our efforts to develop a proprietary drug discovery platform to build a pipeline of product candidates.

A key element of our strategy is to leverage our proprietary drug discovery platform and our ability to design small molecule inhibitors of fast skeletal myosin to expand our pipeline of product candidates. We are leveraging our proprietary drug discovery platform and capabilities to create precision medicines for muscle disorders with high levels of unmet need. In order to do so, we must continue to invest in our proprietary drug discovery platform and development capabilities. Although our research and development efforts to date have resulted in a pipeline of product candidates, these product candidates may not be safe and effective. In addition, although we expect that our proprietary drug discovery platform will allow us to develop a diverse pipeline of product candidates across multiple therapeutic areas, we may not prove to be successful at doing so. Furthermore, we may also find that the uses of our proprietary drug discovery platform are limited because alternative uses of our therapeutics prove not to be safe or effective. Even if we are successful in building our pipeline, the potential product candidates that we identify may not be suitable for clinical development, including as a result of being shown to have harmful side effects or other characteristics that indicate that they are unlikely to be products that will receive marketing approval or achieve market acceptance. Further, because our product candidates and development programs are based on our proprietary drug discovery platform, adverse developments with respect to one of our programs may have a significant adverse impact on the actual or perceived likelihood of success and value of our other programs.

In addition, the biotechnology and pharmaceutical industries are characterized by rapidly advancing technologies. Our future success will depend in part on our ability to maintain a competitive position with our approach. If we fail to stay at the forefront of technological change in utilizing our proprietary drug discovery platform to create and develop product candidates, we may be unable to compete effectively. Our competitors may render our approach obsolete or limit the commercial value of our product candidates, by advances in existing technological approaches or the development of new or different approaches, potentially eliminating the advantages in our drug discovery process that we believe we derive from our research approach and proprietary technologies. By contrast, adverse developments with respect to other companies that attempt to use a similar approach to our approach may adversely impact the actual or perceived value of our proprietary drug discovery platform and potential of our product candidates. If any of these events occur, we may be forced to abandon our development efforts for a program or programs, which would have a material adverse effect on our business and could potentially cause us to cease operations.

We may develop EDG-5506 and potentially other programs in combination with other therapies, which would expose us to additional risks.

We may develop EDG-5506 and potentially other programs, in combination with one or more currently approved therapies or therapies in development. Patients may not be able to tolerate EDG-5506 or any other product candidates in combination with other therapies or dosing of EDG-5506 in combination with other therapies may have unexpected consequences. Even if any of our product candidates were to receive marketing approval or be commercialized for use in combination with other existing therapies, we would continue to be subject to the risks that the FDA, EMA or other comparable foreign regulatory authorities could revoke approval of the therapy used in combination with any of our product candidates, or safety, efficacy, manufacturing or supply issues could arise with these existing therapies. In addition, it is possible that existing therapies with which our product candidates are approved for use could themselves fall out of favor. This could result in the need to identify other combination therapies for our product candidates or our own products being removed from the market or being less successful commercially.

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We may also evaluate our product candidates in combination with one or more other therapies that have not yet been approved for marketing by the FDA, EMA or comparable foreign regulatory authorities. We will not be able to market and sell any product candidate in combination with any such unapproved therapies that do not ultimately obtain marketing approval.

If the FDA, EMA or other comparable foreign regulatory authorities do not approve or revoke their approval of these other therapies, or if safety, efficacy, commercial adoption, manufacturing or supply issues arise with the therapies we may choose to evaluate in combination with EDG-5506 or any other product candidate, we may be unable to obtain approval of or successfully market any one or all of the product candidates we develop.

Additionally, if the third-party providers of therapies or therapies in development used in combination with our product candidates are unable to produce sufficient quantities for clinical trials or for commercialization of our product candidates, or if the cost of combination therapies are prohibitive, our development and commercialization efforts would be impaired, which would have an adverse effect on our business, financial condition, results of operations and growth prospects.

The manufacture of drugs is complex, and our third-party manufacturers may encounter difficulties in production. If any of our third-party manufacturers encounter such difficulties, our ability to provide adequate supply of our product candidates for clinical trials or our products for patients, if approved, could be delayed or prevented.

Manufacturing drugs, especially in large quantities, is complex and may require the use of innovative technologies. Each lot of an approved drug product must undergo thorough testing for identity, strength, quality, purity and potency. Manufacturing drugs requires facilities specifically designed for and validated for this purpose, as well as sophisticated quality assurance and quality control procedures. Slight deviations anywhere in the manufacturing process, including filling, labeling, packaging, storage and shipping and quality control and testing, may result in lot failures or product recalls. When changes are made to the manufacturing process, we may be required to provide preclinical and clinical data showing the comparable quality and efficacy of the products before and after such changes. If our third-party manufacturers are unable to produce sufficient quantities for clinical trials or for commercialization as a result of these challenges, or otherwise, our development and commercialization efforts would be impaired, which would have an adverse effect on our business, financial condition, results of operations and growth prospects.

Changes in methods of product candidate manufacturing or formulation may result in additional costs or delay.

As product candidates progress through preclinical and clinical trials to marketing approval and commercialization, it is common that various aspects of the development program, such as manufacturing methods and formulation, are altered along the way in an effort to optimize yield and manufacturing batch size, minimize costs and achieve consistent quality and results. For example, we may introduce an alternative formulation of EDG-5506 of our upcoming Phase 2 clinical trials. We will also explore alternate formulations for use with pediatric patients, particularly DMD patients, who may have difficulty taking adult formulations. Such changes carry the risk that they will not achieve these intended objectives. Any of these changes could cause our product candidates to perform differently and affect the results of planned clinical trials or other future clinical trials conducted with the altered materials. This could delay completion of clinical trials, require the conduct of bridging clinical trials or the repetition of one or more clinical trials, increase clinical trial costs, delay approval of our product candidates and jeopardize our ability to commercialize our product candidates, if approved, and generate revenue.

Our product candidates may not achieve adequate market acceptance among physicians, patients, healthcare payors and others in the medical community necessary for commercial success.

Even if our product candidates receive regulatory approval, they may not gain adequate market acceptance among physicians, patients, third-party payors and others in the medical community. The degree of market acceptance of any of our approved product candidates will depend on a number of factors, including:

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If any of our product candidates are approved but do not achieve an adequate level of acceptance by physicians, hospitals, healthcare payors and patients, we may not generate or derive sufficient revenue from that product candidate and our financial results could be negatively impacted.

The patient population suffering from DMD, BMD and Limb-girdle muscular dystrophy (LGMD) is small and has not been established with precision. If the actual number of patients is smaller than we estimate, our revenue and ability to achieve profitability may be adversely affected. Because the target patient populations of our programs are small and the addressable patient population may be even smaller, we must be able to successfully identify patients and capture a significant market share to achieve profitability and growth.

DMD, BMD and LGMDs are rare, genetic neuromuscular disorders. We estimate that DMD occurs in approximately one in every 3,500 to 5,000 live male births and that the patient population is approximately 12,000 to 15,000 in the United States and approximately 25,000 in Europe. BMD has a much lower incidence of approximately 1 in every 18,450 live male births. We estimate there are between 4,000 and 5,000 patients with BMD in the United States, with similar numbers estimated in Europe. The approximate global prevalence of LGMDs as a group is estimated to be from 0.56 to 5.75 per 100,000. Our estimates of the size of these patient populations are based on published studies. Given the small number of patients who have the diseases that we are targeting, it is critical to our ability to grow and become profitable that we continue to successfully identify patients with these rare diseases. The effort to identify patients with diseases we seek to treat is in early stages, and we cannot accurately predict the number of patients for whom treatment might be possible. Various factors may

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decrease the market size of our product and product candidates, including the severity of the disease, patient demographics and the response of patients’ immune systems to our product candidates. If the results of these studies or our analysis of them do not accurately reflect the relevant patient population, our assessment of the market may be inaccurate, making it difficult or impossible for us to meet our revenue goals, or to obtain and maintain profitability.

The effort to identify patients with diseases we seek to treat is in early stages and we cannot accurately predict the number of patients for whom treatment might be possible. A newborn screening initiative was put into place with the goal of identifying and providing care for every child born with muscular dystrophy and achieving Recommended Uniform Screening Panel (RUSP) status. An Ohio newborn screening (NBS) pilot developed a process to determine who should have genetic testing. Currently, a newborn screening pilot program in New York State is testing this and other aspects of a comprehensive newborn screening program at a large scale. A Steering Committee is compiling other evidence necessary to support a nomination package to the Advisory Committee for Heritable Disorders in Newborns and Children (ACHDNC) to add muscular dystrophies to the RUSP. However, a scalable and cost-effective algorithm for accurately detecting muscular dystrophy which could be implemented at a national level may not be developed. In addition, the ACHDNC may decide not to add DMD to the RUSP. Furthermore, even if DMD is added to the RUSP, states may not be able to effectively implement a NBS program. This could reduce the identifiable patient population for the diseases we seek to treat and result in our therapies not being able to be initiated early on in patients.

Additionally, the potentially addressable patient population for each of our product candidates may be limited or may not be amenable to treatment with our product candidates, and new patients may become increasingly difficult to identify or gain access to, which would adversely affect our results of operations and our business. Further, even if we obtain significant market share for our product candidates, because the potential target populations are very small, we may never achieve profitability despite obtaining such significant market share.

We may not be successful in augmenting our product pipeline through acquisitions and in-licenses.

We intend to evaluate select external opportunities to strategically expand our pipeline. While we plan to leverage our leadership team’s prior business development experience as we evaluate potential in-licensing and acquisition opportunities to expand our portfolio, we may not be able to identify suitable licensing or acquisition opportunities, and even if we do, we may not be able to successfully secure such licensing and acquisition opportunities. The licensing or acquisition of third-party intellectual property rights is a competitive area, and several more established companies may pursue strategies to license or acquire third-party intellectual property rights that we may consider attractive or necessary. These companies may have a competitive advantage over us due to their size, capital resources and greater clinical development and commercialization capabilities. In addition, companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We also may be unable to license or acquire third-party intellectual property rights on terms that would allow us to make an appropriate return on our investment, or at all. If we are unable to successfully license or acquire additional product candidates to expand our portfolio, our pipeline, competitive position, business, financial condition, results of operations, and prospects may be materially harmed.

Any product candidates we develop may become subject to unfavorable third-party coverage and reimbursement practices, as well as pricing regulations.

The availability and extent of coverage and adequate reimbursement by third-party payors including government health administration authorities, private health coverage insurers, managed care organizations and other third-party payors is essential for most patients to be able to afford expensive treatments. The initial targets in our pipeline are indications with small patient populations. For product candidates that are designed to treat smaller patient populations to be commercially viable, the reimbursement for such product candidates must be higher, on a relative basis, to account for the lack of volume. Accordingly, we will need to implement a coverage and reimbursement strategy for any approved product candidate that accounts for the smaller potential market size.

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Sales of any of our product candidates that receive marketing approval will depend substantially, both in the United States and internationally, on the extent to which the costs of such product candidates will be covered and reimbursed by third-party payors. If reimbursement is not available, or is available only to limited levels, we may not be able to successfully commercialize our product candidates. Even if coverage is provided, the approved reimbursement amount may not be high enough to allow us to establish or maintain pricing sufficient to realize an adequate return on our investment. Coverage and reimbursement may impact the demand for, or the price of, any product candidate for which we obtain marketing approval. If coverage and reimbursement are not available or reimbursement is available only to limited levels, we may not successfully commercialize any product candidate for which we obtain marketing approval.

There is significant uncertainty related to third-party payor coverage and reimbursement of newly approved products. In the United States, for example, principal decisions about reimbursement for new products are typically made by the Centers for Medicare & Medicaid Services (CMS), an agency within the U.S. Department of Health and Human Services (HHS). CMS decides whether and to what extent a new product will be covered and reimbursed under Medicare, and private third-party payors often follow CMS’s decisions regarding coverage and reimbursement to a substantial degree. However, one third-party payor’s determination to provide coverage for a product candidate does not assure that other payors will also provide coverage for the product candidate or at the same level of reimbursement. As a result, the coverage determination process is often time-consuming and costly. This process will require us to provide scientific and clinical support for the use of our products to each third-party payor separately, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the first instance.

Increasingly, third-party payors are requiring that drug companies provide them with predetermined discounts from list prices and are challenging the prices charged for medical products. Further, such payors are increasingly challenging the price, examining the medical necessity and reviewing the cost effectiveness of medical product candidates. There may be especially significant delays in obtaining coverage and reimbursement for newly approved drugs. Third-party payors may limit coverage to specific product candidates on an approved list, known as a formulary, which might not include all FDA-approved drugs for a particular indication. We may need to conduct expensive pharmaco-economic studies to demonstrate the medical necessity and cost effectiveness of our products. Nonetheless, our product candidates may not be considered medically necessary or cost effective. We cannot be sure that coverage and reimbursement will be available for any product that we commercialize and, if reimbursement is available, what the level of reimbursement will be.

Outside the United States, the commercialization of therapeutics is generally subject to extensive governmental price controls and other market regulations, and we believe the increasing emphasis on cost containment initiatives in Europe, Canada and other countries has and will continue to put pressure on the pricing and usage of therapeutics such as our product candidates. In many countries, particularly the countries of the European Union (EU), medical product prices are subject to varying price control mechanisms as part of national health systems. In these countries, pricing negotiations with governmental authorities can take considerable time after a product receives marketing approval. To obtain reimbursement or pricing approval in some countries, we may be required to conduct a clinical trial that compares the cost-effectiveness of our product candidate to other available therapies. In general, product prices under such systems are substantially lower than in the United States. Other countries allow companies to fix their own prices for products but monitor and control company profits. Additional foreign price controls or other changes in pricing regulation could restrict the amount that we are able to charge for our product candidates. Accordingly, in markets outside the United States, the reimbursement for our products may be reduced compared with the United States and may be insufficient to generate commercially reasonable revenue and profits.

If we are unable to establish or sustain coverage and adequate reimbursement for any product candidates from third-party payors, the adoption of those products and sales revenue will be adversely affected, which, in turn, could adversely affect the ability to market or sell those product candidates, if approved. Coverage policies and third-party payor reimbursement rates may change at any time. Even if favorable coverage and reimbursement status is attained for one or more products for which we receive regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

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Our business entails a significant risk of product liability and if we are unable to obtain sufficient insurance coverage, such inability could have an adverse effect on our business and financial condition. If product liability lawsuits are brought against us, we may incur substantial liabilities and may be required to limit commercialization of our products.

Our business exposes us to significant product liability risks inherent in the development, testing, manufacturing and marketing of therapeutic treatments. We currently have product liability insurance that we believe is appropriate for our stage of development and may need to obtain higher levels prior to marketing any of our product candidates, if approved. Any insurance we have or may obtain may not provide sufficient coverage against potential liabilities. Furthermore, clinical trial and product liability insurance is becoming increasingly expensive. As a result, we may be unable to obtain sufficient insurance at a reasonable cost to protect us against losses caused by product liability claims that could have an adverse effect on our business and financial condition. Also, our insurance policies may have various exclusions, and we may be subject to a product liability claim for which we have no coverage. We may have to pay any amounts awarded by a court or negotiated in a settlement that exceed our coverage limitations or that are not covered by our insurance, and we may not have, or be able to obtain, sufficient capital to pay such amounts. Even if our agreements with any future corporate collaborators entitle us to indemnification against losses, such indemnification may not be available or adequate should any claim arise.

We may be sued if any of our product candidates cause or are perceived to cause injury or are found to be otherwise unsuitable during clinical testing, manufacturing, marketing, or sale post-approval. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability, or a breach of warranties. Claims could also be asserted under state consumer protection laws. If we cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit testing and commercialization of our products. Even successful defense would require significant financial and management resources.

Regardless of the merits or eventual outcome, liability claims may result in:

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Risks Related to Regulatory Approval and Other Legal Compliance Matters

The regulatory approval processes of the FDA, EMA and other comparable foreign regulatory authorities are lengthy, time consuming and inherently unpredictable. If we are ultimately unable to obtain regulatory approval of our product candidates, we will be unable to generate product revenue and our business will be substantially harmed.

Our product candidates are and will continue to be subject to extensive governmental regulations relating to, among other things, research, testing, development, manufacturing, safety, efficacy, approval, recordkeeping, reporting, labeling, storage, packaging, advertising and promotion, pricing, marketing and distribution of drugs. Rigorous preclinical testing and clinical trials and an extensive regulatory approval process must be successfully completed in the United States and in many foreign jurisdictions before a new drug can be approved for marketing. Obtaining approval by the FDA, EMA and other comparable foreign regulatory authorities is costly, unpredictable, typically takes many years following the commencement of clinical trials and depends upon numerous factors, including the type, complexity and novelty of the product candidates involved. In addition, approval policies, regulations or the type and amount of clinical data necessary to gain approval may change during the course of a product candidate’s clinical development and may vary among jurisdictions, which may cause delays in the approval or the decision not to approve an application. Regulatory authorities have substantial discretion in the approval process and may refuse to accept any application or may decide that our data are insufficient for approval and require additional preclinical, clinical or other data. Even if we eventually complete clinical testing and receive approval for our product candidates, the FDA, EMA and other comparable foreign regulatory authorities may approve our product candidates for a more limited indication or a narrower patient population than we originally requested or may impose other prescribing limitations or warnings that limit the product’s commercial potential. We have not submitted for, or obtained, regulatory approval for any product candidate, and it is possible that none of our product candidates will ever obtain regulatory approval. Further, development of our product candidates and/or regulatory approval may be delayed for reasons beyond our control. We cannot provide any assurance that any product candidate we may develop will progress through required clinical testing and obtain the regulatory approvals necessary for us to begin selling them.

We have not conducted, managed or completed large-scale or pivotal clinical trials nor managed the regulatory approval process with the FDA or any other regulatory authority. Applications for our product candidates could fail to receive regulatory approval for many reasons, including the following:

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This lengthy approval process, as well as the unpredictability of the results of clinical trials, may result in our failing to obtain regulatory approval to market any of our product candidates, which would significantly harm our business, results of operations and prospects. Any delay or failure in seeking or obtaining required approvals would have a material and adverse effect on our ability to generate revenue from any particular product candidates we are developing and for which we are seeking approval. Furthermore, any regulatory approval to market a drug may be subject to significant limitations on the approved uses or indications for which we may market, promote and advertise the drug or the labeling or other restrictions. In addition, the FDA has the authority to require a Risk Evaluation and Mitigation Strategy (REMS) plan as part of approving an NDA, or after approval, which may impose further requirements or restrictions on the distribution or use of an approved drug. These requirements or restrictions might include limiting prescribing to certain physicians or medical centers that have undergone specialized training, limiting treatment to patients who meet certain safe-use criteria and requiring treated patients to enroll in a registry. These limitations and restrictions may significantly limit the size of the market for the drug and affect reimbursement by third-party payors.

We are also subject to numerous foreign regulatory requirements governing, among other things, the conduct of clinical trials, manufacturing and marketing authorization, pricing and third-party reimbursement. The foreign regulatory approval process varies among countries, and generally includes all of the risks associated with FDA and EMA approval described above as well as risks attributable to the satisfaction of local regulations in foreign jurisdictions. Moreover, the time required to obtain approval may differ from that required to obtain FDA approval.

The FDA, EMA and other comparable foreign regulatory authorities may not accept data from trials conducted in locations outside of their jurisdiction.

Our ongoing clinical trials are being undertaken in the United States. We may choose to conduct additional clinical trials internationally. The acceptance of study data by the FDA, EMA or other comparable foreign regulatory authority from clinical trials conducted outside of their respective jurisdictions may be subject to certain conditions. In cases where data from United States clinical trials are intended to serve as the basis for marketing approval in the foreign countries outside the United States, the standards for clinical trials and approval may be different. There can be no assurance that any United States or foreign regulatory authority would accept data from trials conducted outside of its applicable jurisdiction. If the FDA, EMA or any applicable foreign regulatory authority does not accept such data, it would result in the need for additional trials, which would be costly and time-consuming and delay aspects of our business plan, and which may result in our product candidates not receiving approval or clearance for commercialization in the applicable jurisdiction.

Obtaining and maintaining regulatory approval of our product candidates in one jurisdiction does not mean that we will be successful in obtaining regulatory approval of our product candidates in other jurisdictions.

Obtaining and maintaining regulatory approval of our product candidates in one jurisdiction does not guarantee that we will be able to obtain or maintain regulatory approval in any other jurisdiction. For example, even if the FDA or EMA grants marketing approval of a product candidate, comparable regulatory authorities in foreign jurisdictions must also approve the manufacturing, marketing and promotion and reimbursement of the product candidate in those countries. Complying with new requirements and changes in other foreign regulations that apply to clinical trials and drug development activities can delay our clinical trials and regulatory approval time lines in the EU and other foreign jurisdictions. For example, the Clinical Trials Regulation EU No. 536/2014 entered into application on January 31, 2022 and is intended to simplify the current rules for clinical trial authorization and standards of performance in EU. Complying with such new legislation or changes in healthcare regulation could be time-intensive and expensive, resulting in a material adverse effect on our business.

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However, a failure or delay in obtaining regulatory approval in one jurisdiction may have a negative effect on the regulatory approval process in others. Approval procedures vary among jurisdictions and can involve requirements and administrative review periods different from those in the United States, including additional preclinical studies or clinical trials as clinical trials conducted in one jurisdiction may not be accepted by regulatory authorities in other jurisdictions. In many jurisdictions outside the United States, a product candidate must be approved for reimbursement before it can be approved for sale in that jurisdiction. In some cases, the price that we intend to charge for our products is also subject to approval.

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Obtaining foreign regulatory approvals and establishing and maintaining compliance with foreign regulatory requirements could result in significant delays, difficulties and costs for us and could delay or prevent the introduction of our products in certain countries. If we or any future collaborator fail to comply with the regulatory requirements in international markets or fail to receive applicable marketing approvals, our target market will be reduced and our ability to realize the full market potential of our potential product candidates will be harmed.

The regulatory approval processes for product candidates that target rare diseases, including DMD, BMD and LGMD are uncertain.

Due to the lack of precedent, broad discretion of regulatory authorities, and a multitude of unique factors that impact the regulatory approval process, the likelihood of the approval of any of our product candidates that target rare diseases, such as DMD, BMD and LGMD is uncertain, and we may not be able to anticipate, prepare for or satisfy requests or requirements from regulatory authorities, including completing and submitting planned Investigational New Drug (IND) and new drug applications (NDA) for our product candidates, in a timely manner, or at all. For example, DMD is a rare disease for which there are only two FDA approved therapeutics. In addition, no therapies are currently approved for BMD in the United States or the EU. Further, the FDA may determine, after evaluation of our data and analyses, that such data and analyses do not support an NDA submission, filing or approval. Due to this lack of predictability, we may not have the resources necessary to meet regulatory requirements and successfully complete a potentially protracted, expensive and wide-ranging approval process for commercialization of product candidates for rare diseases.

Even if our product candidates receive regulatory approval, they will be subject to significant post-marketing regulatory requirements and oversight.

Any regulatory approvals that we may receive for our product candidates will require the submission of reports to regulatory authorities and on-going surveillance to monitor the safety and efficacy of the product candidate, may contain significant limitations related to use restrictions for specified age groups, warnings, precautions or contraindications, and may include burdensome post-approval study or risk management requirements and regulatory inspection. For example, the FDA may require a REMS in order to approve our product candidates, which could entail requirements for a medication guide, physician training and communication plans or additional elements to ensure safe use, such as restricted distribution methods, patient registries and other risk minimization tools. In addition, if the FDA or foreign regulatory authorities approve our product candidates, the manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion, import, export and recordkeeping for our product candidates will be subject to extensive and ongoing regulatory requirements. These requirements include submissions of safety and other post-marketing information and reports, registration, as well as on-going compliance with cGMPs and GCPs for any clinical trials that we conduct post-approval. In addition, manufacturers of drug products and their facilities are subject to continual review and periodic, unannounced inspections by the FDA and other regulatory authorities for compliance with cGMP regulations and standards. If we or a regulatory agency discover previously unknown problems with a product, such as adverse events of unanticipated severity or frequency, or problems with the facilities where the product is manufactured, a regulatory agency may impose restrictions on that product, the manufacturing facility or us, including requiring recall or withdrawal of the product from the market or suspension of manufacturing. In addition, failure to comply with FDA, EMA and other comparable foreign regulatory requirements may subject our company to administrative or judicially imposed sanctions, including:

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The occurrence of any event or penalty described above may inhibit our ability to commercialize our product candidates, if approved, and generate revenue. Furthermore, non-compliance by us or any future collaborator with regulatory requirements, including safety monitoring and with requirements related to the development of products for the pediatric population can also result in significant financial penalties.

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We may not be able to obtain orphan drug designation or obtain or maintain orphan drug exclusivity for our product candidates and, even if we do, that exclusivity may not prevent the FDA, EMA or other comparable foreign regulatory authorities, from approving competing products.

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Regulatory authorities in some jurisdictions, including the United States and the EU, may designate drugs for relatively small patient populations as orphan drugs. Under the Orphan Drug Act, the FDA may designate a product as an orphan drug if it is a drug intended to treat a rare disease or condition, which is generally defined as a patient population of fewer than 200,000 individuals annually in the United States, or a patient population greater than 200,000 in the United States where there is no reasonable expectation that the cost of developing the drug will be recovered from sales in the United States. However, there can be no assurances that we will be able to obtain orphan designations for our product candidates.

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In the United States, orphan drug designation entitles a party to financial incentives such as opportunities for grant funding towards clinical trial costs, tax advantages and user-fee waivers. In addition, if a product that has orphan drug designation subsequently receives the first FDA approval for the disease for which it has such designation, the product is entitled to orphan drug exclusivity. Orphan drug exclusivity in the United States provides that the FDA may not approve any other applications, including a full NDA, to market the same drug for the same indication for seven years, except in limited circumstances. The applicable exclusivity period is 10 years in Europe. The European exclusivity period can be reduced to six years if a drug no longer meets the criteria for orphan drug designation or if the drug is sufficiently profitable so that market exclusivity is no longer justified.

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We intend to seek orphan drug designation for EDG-5506 in DMD and BMD and may seek orphan drug designation for other product candidates. Even if we obtain orphan drug designation for a product candidate, we may not be able to obtain or maintain orphan drug exclusivity for that product candidate. We may not be the first to obtain marketing approval of any product candidate for which we have obtained orphan drug designation for the orphan-designated indication due to the uncertainties associated with developing pharmaceutical products. In addition, exclusive marketing rights in the United States may be limited if we seek approval for an indication broader than the orphan-designated indication or may be lost if the FDA later determines that the request for designation was materially defective or if we are unable to ensure that we will be able to manufacture sufficient quantities of the product to meet the needs of patients with the rare disease or condition. Further, even if we obtain orphan drug exclusivity for a product, that exclusivity may not effectively protect the product from competition because different drugs with different active moieties may be approved for the same condition. Even after an orphan drug is approved, the FDA can subsequently approve the same drug with the same active moiety for the same condition if the FDA concludes that the later drug is clinically superior in that it is shown to be safer, more effective or makes a major contribution to patient care or the manufacturer of the product with orphan exclusivity is unable to maintain sufficient product quantity. Orphan drug designation neither shortens the development time or regulatory review time of a drug nor gives the product candidate any advantage in the regulatory review or approval process or entitles the product candidate to priority review.

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Where appropriate, we plan to secure approval from the FDA or comparable foreign regulatory authorities through the use of accelerated registration pathways. If we are unable to obtain such approval, we may be required to conduct additional preclinical studies or clinical trials beyond those that we contemplate, which could increase the expense of obtaining, and delay the receipt of, necessary marketing approvals. Even if we receive accelerated approval from the FDA, if our confirmatory trials do not verify clinical benefit, or if we do not comply with rigorous post-marketing requirements, the FDA may seek to withdraw accelerated approval.

Where possible, we plan to pursue accelerated development strategies in areas of high unmet need. We may seek an accelerated approval pathway for our one or more of our product candidates. Under the accelerated approval provisions in the Federal Food, Drug, and Cosmetic Act, and the FDA’s implementing regulations, the FDA may grant accelerated approval to a product candidate designed to treat a serious or life-threatening condition that provides meaningful therapeutic benefit over available therapies upon a determination that the product candidate has an effect on a surrogate endpoint or intermediate clinical endpoint that is reasonably likely to predict clinical benefit. The FDA considers a clinical benefit to be a positive therapeutic effect that is clinically meaningful in the context of a given disease, such as irreversible morbidity or mortality. For the purposes of accelerated approval, a surrogate endpoint is a marker, such as a laboratory measurement, radiographic image, physical sign, or other measure that is thought to predict clinical benefit, but is not itself a measure of clinical benefit. An intermediate clinical endpoint is a clinical endpoint that can be measured earlier than an effect on irreversible morbidity or mortality that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit. The accelerated approval pathway may be used in cases in which the advantage of a new drug over available therapy may not be a direct therapeutic advantage, but is a clinically important improvement from a patient and public health perspective. If granted, accelerated approval is usually contingent on the sponsor’s agreement to conduct, in a diligent manner, additional post-approval confirmatory studies to verify and describe the drug’s clinical benefit. If such post-approval studies fail to confirm the drug’s clinical benefit, the FDA may withdraw its approval of the drug.

Prior to seeking such accelerated approval, we will seek feedback from the FDA and will otherwise evaluate our ability to seek and receive such accelerated approval. There can be no assurance that after our evaluation of the feedback and other factors we will decide to pursue or submit an NDA for accelerated approval or any other form of expedited development, review or approval. Similarly, there can be no assurance that after subsequent FDA feedback we will continue to pursue or apply for accelerated approval or any other form of expedited development, review or approval, even if we initially decide to do so. Furthermore, if we decide to submit an application for accelerated approval or under another expedited regulatory designation (e.g., breakthrough therapy designation), there can be no assurance that such submission or application will be accepted or that any expedited development, review or approval will be granted on a timely basis, or at all. The FDA or other comparable foreign regulatory authorities could also require us to conduct further studies prior to considering our application or granting approval of any type. A failure to obtain accelerated approval or any other form of expedited development, review or approval for our product candidate would result in a longer time period to commercialization of such product candidate, could increase the cost of development of such product candidate and could harm our competitive position in the marketplace.

We may face difficulties from changes to current regulations and future legislation.

Existing regulatory policies may change, and additional government regulations may be enacted that could prevent, limit or delay regulatory approval of our product candidates. We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative action, either in the United States or abroad. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained, and we may not achieve or sustain profitability.

We also cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative or executive action, either in the United States or abroad. For example, certain policies of the current U.S. administration may impact our business and industry, which could impose significant burdens on, or otherwise materially delay, the FDA’s ability to engage in routine regulatory and oversight activities such as implementing statutes through rulemaking, issuance of guidance, and review and approval of marketing applications. It is difficult to predict how current and future legislation, executive actions, and litigation, including

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the executive orders referenced below, will be implemented, and the extent to which they will impact our business, our clinical development, and the FDA’s and other agencies’ ability to exercise their regulatory authority, including FDA’s pre-approval inspection and timely review of any regulatory filings or applications we submit to the FDA. If these executive actions impose constraints on FDA’s ability to engage in oversight and implementation activities in the normal course or constraints on our business operations, including operations of our contractors, our business may be negatively impacted.

For example, in March 2010, the Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Reconciliation Act of 2010 (collectively, the ACA), was passed, which substantially changed the way healthcare is financed by both the government and private insurers, and continues to significantly impact the U.S. pharmaceutical industry. Since its enactment, there have been judicial and Congressional challenges to certain aspects of the ACA. In June 2021, the United States Supreme Court held that Texas and other challengers had no legal standing to challenge the ACA, dismissing the case without specifically ruling on the constitutionality of the ACA. Accordingly, the ACA remains in effect in its current form. It is unclear how this Supreme Court decision, future litigation, or healthcare measures promulgated by the Biden administration will impact our business, financial condition and results of operations. On January 28, 2021, President Biden issued an executive order to initiate a special enrollment period for purposes of obtaining health insurance coverage through the ACA marketplace. The executive order also instructs certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the ACA. Complying with any new legislation or changes in healthcare regulation could be time-intensive and expensive, resulting in a material adverse effect on our business.

In addition, other legislative changes have been proposed and adopted in the United States since the ACA was enacted. These changes included aggregate reductions to Medicare payments to providers of up to 2% per fiscal year, effective April 1, 2013, which will remain in effect through 2031, with the exception of a temporary suspension implemented under various COVID-19 relief legislation from May 1, 2020 through March 31, 2022, unless additional congressional action is taken. Under current legislation, the actual reduction in Medicare payments will vary from 1% in 2022 to up to 3% in the final fiscal year of this sequester. In January 2013, President Obama signed into law the American Taxpayer Relief Act of 2012, which, among other things, reduced Medicare payments to several providers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. These laws may result in additional reductions in Medicare and other healthcare funding, which could have a material adverse effect on customers for our drugs, if approved, and accordingly, our financial operations.

Moreover, there has been heightened governmental scrutiny recently over the manner in which drug manufacturers set prices for their marketed products, which has resulted in several Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to product pricing, review the relationship between pricing and manufacturer patient programs, and reform government program reimbursement methodologies for drug products. For example, in May 2019, CMS issued a final rule to allow Medicare Advantage Plans the option of using step therapy for Part B drugs beginning January 1, 2020. This final rule codified CMS’s policy change that was effective January 1, 2019. At the federal level, the Trump administration used several means to propose or implement drug pricing reform, including through federal budget proposals, executive orders and policy initiatives. For example, in 2020, HHS and CMS issued various rules that are expected to impact, among others, price reductions from pharmaceutical manufacturers to plan sponsors under Part D, fee arrangements between pharmacy benefit managers and manufacturers, manufacturer price reporting requirements under the Medicaid Drug Rebate Program, including regulations that affect manufacturer-sponsored patient assistance programs subject to pharmacy benefit manager accumulator programs and Best Price reporting related to certain value-based purchasing arrangements. Multiple lawsuits have been brought against the HHS challenging various aspects of the rules. The impact of these lawsuits as well as legislative, executive, and administrative actions of the Biden administration on us and the pharmaceutical industry as a whole is unclear.

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Under the American Rescue Plan Act of 2021, effective January 1, 2024, the statutory cap on Medicaid Drug Rebate Program rebates that manufacturers pay to state Medicaid programs will be eliminated. Elimination of this cap may require pharmaceutical manufacturers to pay more in rebates than it receives on the sale of products, which could have a material impact on our business. In July 2021, the Biden administration released an executive order, “Promoting Competition in the American Economy,” with multiple provisions aimed at increasing competition for prescription drugs. In response to this executive order, the HHS released a Comprehensive Plan for Addressing High Drug Prices that outlines principles for drug pricing reform and potential legislative policies that Congress could pursue to advance these principles. In addition, Congress is considering legislation that, if passed, could have significant impact on prices of prescription drugs covered by Medicare, including limitations on drug price increases. The impact of these legislative, executive, and administrative actions and any future healthcare measures and agency rules implemented by the Biden administration on us and the pharmaceutical industry as a whole is unclear. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability, or commercialize our product candidates if approved.

At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. A number of states are considering or have recently enacted state drug price transparency and reporting laws that could substantially increase our compliance burdens and expose us to greater liability under such state laws once we begin commercialization after obtaining regulatory approval for any of our products. We are unable to predict the future course of federal or state healthcare legislation in the United States directed at broadening the availability of healthcare and containing or lowering the cost of healthcare. These and any further changes in the law or regulatory framework that reduce our revenue or increase our costs could also have a material and adverse effect on our business, financial condition and results of operations.

We expect that the ACA, as well as other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and in additional downward pressure on the price that we receive for any approved product. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability or commercialize our product candidates. It is also possible that additional governmental action is taken to address the COVID-19 pandemic.

Legislative and regulatory proposals have been made to expand post-approval requirements and restrict sales and promotional activities for biotechnology products. We cannot be sure whether additional legislative changes will be enacted, or whether FDA regulations, guidance or interpretations will be changed, or what the impact of such changes on the marketing approvals of our product candidates, if any, may be. In addition, increased scrutiny by Congress of the FDA’s approval process may significantly delay or prevent marketing approval, as well as subject us to more stringent product labeling and post-marketing testing and other requirements.

The regulatory framework for privacy and personal information security issues worldwide is rapidly evolving and is likely to remain uncertain for the foreseeable future. The U.S. federal and various state, local and foreign government bodies and agencies have adopted or are considering adopting laws and regulations limiting, or laws and regulations regarding, the collection, distribution, use, disclosure, storage, security and other processing of personal information.

Additionally, the collection and use of health data and other personal data is governed in the EU by the General Data Protection Regulation (GDPR), which extends the geographical scope of EU data protection law to entities and operations outside of the EU under certain conditions and imposes substantial obligations upon companies and new rights for individuals, and by certain EU Member State-level legislation. Failure to comply with the GDPR may result in fines up to €20,000,000 or up to 4% of the total worldwide annual turnover of the preceding financial year, whichever is higher, and other administrative penalties. The GDPR may increase our responsibility and liability in relation to personal data that we may process, and we may be required to put in place

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additional measures in an effort to comply with the GDPR and with other laws and regulations in the EU, including those of EU Member States, relating to privacy and data protection. This may be onerous and if our efforts to comply with the GDPR or other applicable EU laws and regulations are not successful, or are perceived to be unsuccessful, it could adversely affect our business in the EU. Further, the European Court of Justice (ECJ) invalidated the EU-U.S. Privacy Shield, which had enabled the transfer of personal data from the EU to the U.S. for companies that had self-certified to the Privacy Shield in July 2020. The ECJ decision also raised questions about the continued validity of one of the primary alternatives to the EU-U.S. Privacy Shield, namely the European Commission’s Standard Contractual Clauses (SCCs), and EU regulators have issued additional guidance regarding considerations and requirements that we and other companies must consider and undertake when using the SCCs. EU regulators released new standard contractual clauses in June 2021 that are required to be implemented over time. To the extent that we were to rely on the EU-U.S. or Swiss-U.S. Privacy Shield programs, we will not be able to do so in the future, and the ECJ’s decision and other regulatory guidance or developments otherwise may impose additional obligations with respect to the transfer of personal data from the EU and Switzerland to the U.S., and we may be required to engage in additional contractual negotiations relating to the new SCCs or otherwise, each of which could restrict our activities in those jurisdictions, limit our ability to provide our products and services in those jurisdictions, or increase our costs and obligations and impose limitations upon our ability to efficiently transfer personal data from the EU and Switzerland to the U.S.

Further, the exit of the United Kingdom (UK) from the EU, often referred to as Brexit, has created uncertainty with regard to data protection regulation in the UK. Specifically, the UK exited the EU on January 1, 2020, subject to a transition period that ended on December 31, 2020. On June 28, 2021, the European Commission issued an adequacy decision in respect of the UK’s data protection framework, allowing personal data transfers from EU member states to the UK to continue without requiring additional contractual or other measures in order to lawfully transfer personal data between the territories. This decision is subject to renewal after four years, however, and may be revisited by the European Commission at any time. The UK has implemented legislation similar to the GDPR, referred to as the UK GDPR, which provides for fines of up to the greater of £17.5 million or 4% of global turnover. In the medium and longer terms, however, the relationship between the UK and EU in relation to aspects of data protection law remains unclear, including with respect to cross-border data transfers and the role of the UK Information Commissioner’s Office with respect to the EU, which exposes us to further compliance risk. We may incur liabilities, expenses, costs, and other operational losses relating to the GDPR, the UK GDPR, and other laws and regulations in the EU and UK relating to privacy and data protection, including those of applicable EU Member States in connection with any measures we take to comply with them. Finally, state and foreign laws may apply generally to the privacy and security of information we maintain, and may differ from each other in significant ways, thus complicating compliance efforts and potentially requiring us to undertake additional measures to comply with them.

In the United States, a broad variety of data protection laws and regulations may apply to our activities such as state data breach notification laws, state personal data privacy laws (for example, the California Consumer Privacy Act of 2018 (CCPA)), state health information privacy laws, and federal and state consumer protection laws. A range of enforcement agencies exist at both the state and federal levels that can enforce these laws and regulations. For example, the CCPA requires covered businesses that process personal information of California residents to disclose their data collection, use and sharing practices. Further, the CCPA provides California residents with new data privacy rights (including the ability to opt out of certain disclosures of personal data), imposes new operational requirements for covered businesses, provides for civil penalties for violations as well as a private right of action for data breaches and statutory damages (that is expected to increase data breach class action litigation and result in significant exposure to costly legal judgements and settlements). Aspects of the CCPA and its interpretation and enforcement remain uncertain. In addition, it is anticipated that the CCPA will be expanded on January 1, 2023, when the California Privacy Rights Act of 2020 (CPRA) becomes operative. The CPRA will, among other things, give California residents the ability to limit use of certain sensitive personal information, further restrict the use of cross-contextual advertising, establish restrictions on the retention of personal information, expand the types of data breaches subject to the CCPA’s private right of action, provide for increased penalties for CPRA violations concerning California residents under the age of 16, and establish a new California Privacy Protection Agency to implement and enforce the new legislation. Although there are limited exemptions for clinical trial data under the CCPA, the CCPA and other similar laws could impact our business activities, depending on their interpretation. Additionally, other state legislatures have enacted or are currently

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contemplating, and may pass, their own comprehensive data privacy and security laws, with potentially greater penalties and more rigorous compliance requirements relevant to our business. For example, in March 2021, Virginia enacted the Virginia Consumer Data Protection Act (CDPA), a comprehensive privacy statute that becomes effective on January 1, 2023 and shares similarities with the CCPA, the CPRA, and legislation proposed in other states. Similarly, in June 2021, Colorado enacted the Colorado Privacy Act (CPA), which takes effect on July 1, 2023.

With the GDPR, CCPA, CPRA, CDPA, CPA, and other laws, regulations and other obligations relating to privacy and data protection imposing new and relatively burdensome obligations, and with substantial uncertainty over the interpretation and application of these and other obligations, we may face challenges in addressing their requirements and making necessary changes to our policies and practices, and may incur significant costs and expenses in an effort to do so. Additionally, if third parties we work with, such as vendors or service providers, violate applicable laws or regulations or our policies, such violations may also put our or our customers’ data at risk and could in turn have an adverse effect on our business. Any failure or perceived failure by us or our service providers to comply with our applicable policies or notices relating to privacy or data protection, our contractual or other obligations to third parties, or any of our other legal obligations relating to privacy or data protection, may result in governmental investigations or enforcement actions, litigation, claims and other proceedings, harm our reputation, and could result in significant liability.

Inadequate funding for the FDA, the SEC and other government agencies could hinder their ability to hire and retain key leadership and other personnel, prevent new products and services from being developed or commercialized in a timely manner or otherwise prevent those agencies from performing normal business functions on which the operation of our business may rely, which could negatively impact our business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels, ability to hire and retain key personnel and accept the payment of user fees, and statutory, regulatory, and policy changes. Average review times at the agency have fluctuated in recent years as a result. In addition, government funding of the U.S. Securities and Exchange Commission (SEC) and other government agencies on which our operations may rely, including those that fund research and development activities is subject to the political process, which is inherently fluid and unpredictable.

Disruptions at the FDA and other agencies may also slow the time necessary for new drugs to be reviewed and/or approved by necessary government agencies, which would adversely affect our business. For example, in recent years, including in 2018 and 2019, the U.S. government shut down several times and certain regulatory agencies, such as the FDA and the SEC, had to furlough critical employees and stop critical activities. Separately, in response to the COVID-19 pandemic, since March 2020 when foreign and domestic inspections of facilities were largely placed on hold, the FDA has been working to resume routine surveillance, bioresearch monitoring and pre-approval inspections on a prioritized basis. The FDA has developed a rating system to assist in determining when and where it is safest to conduct prioritized domestic inspections. In 2020 and 2021, a number of companies announced receipt of complete response letters due to the FDA’s inability to complete required inspections for their applications. As of May 2021, the FDA noted it was continuing to ensure timely reviews of applications for medical products during the ongoing COVID-19 pandemic in line with its user fee performance goals and conducting mission critical domestic and foreign inspections to ensure compliance of manufacturing facilities with FDA Good Manufacturing Practices. However, the FDA may not be able to continue its current inspection pace, and review timelines could be extended, including where a pre-approval inspection or an inspection of clinical sites is required and due to the ongoing COVID-19 pandemic and travel restrictions, the FDA is unable to complete such required inspections during the review period. Regulatory authorities outside the U.S. may adopt similar restrictions or other policy measures in response to the COVID-19 pandemic and may experience delays in their regulatory activities. If a prolonged government shutdown or disruption occurs, it could significantly impact the ability of the FDA and other regulatory authorities to timely review and process our regulatory submissions and provide feedback on our clinical development plans, which could have a material adverse effect on our business and our anticipated timelines. Further, future government shutdowns or disruptions to normal operations could impact our ability to access the public markets and obtain necessary capital in order to properly capitalize and continue our operations.

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Our relationships with healthcare professionals, clinical investigators, CROs and third-party payors in connection with our current and future business activities may be subject to federal and state healthcare fraud and abuse laws, false claims laws, transparency laws, government price reporting, and health information privacy and security laws, which could expose us to significant losses, including, among other things, criminal sanctions, civil penalties, contractual damages, exclusion from governmental healthcare programs, reputational harm, administrative burdens and diminished profits and future earnings.

Healthcare providers and third-party payors play a primary role in the recommendation and prescription of any product candidates for which we obtain marketing approval. Our current and future arrangements with healthcare professionals, clinical investigators, CROs, third-party payors and customers may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial arrangements and relationships through which we research, as well as market, sell and distribute our products for which we obtain marketing approval. Restrictions under applicable federal and state healthcare laws and regulations may include the following:

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registration of pharmaceutical sales and medical representatives; state laws that govern the privacy and security of health information in some circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts.

Efforts to ensure that our current and future business arrangements with third parties will comply with applicable healthcare and data privacy laws and regulations will involve substantial ongoing costs, and may require us to undertake or implement additional policies or measures. We may face claims and proceedings by private parties, and claims, investigations and other proceedings by governmental authorities, relating to allegations that our business practices do not comply with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations, and it is possible that courts or governmental authorities may conclude that we have not complied with them, or that we may find it necessary or appropriate to settle any such claims or other proceedings. In connection with any such claims, proceedings, or settlements, we may be subject to significant penalties, including civil, criminal and administrative penalties, damages, fines, disgorgement, imprisonment, exclusion from participation in government funded healthcare programs, such as Medicare and Medicaid, integrity oversight and reporting obligations, contractual damages, reputational harm, diminished profits and future earnings and the curtailment or restructuring of our operations. Defending against any such actions can be costly, time-consuming and may require significant financial and personnel resources. Therefore, even if we are successful in defending against any such actions that may be brought against us, our business may be impaired. Further, if any of the physicians or other healthcare providers or entities with whom we expect to do business is found to be not in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from government funded healthcare programs.

Our employees, independent contractors, consultants, commercial collaborators, principal investigators, CROs, suppliers and vendors may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements.

We are exposed to the risk that our employees, independent contractors, consultants, commercial collaborators, principal investigators, CROs, suppliers and vendors may engage in misconduct or other improper activities. Misconduct by these parties could include failures to comply with FDA regulations, provide accurate information to the FDA, comply with federal and state health care fraud and abuse laws and regulations, accurately report financial information or data or disclose unauthorized activities to us. In particular, research, sales, marketing and business arrangements in the health care industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. Misconduct by these parties could also involve the improper use of information obtained in the course of clinical trials, which could result in regulatory sanctions and serious harm to our reputation. We have adopted a code of conduct but it is not always possible to identify and deter misconduct by these parties, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to comply with these laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, including the imposition of significant penalties, including civil, criminal and administrative penalties, damages, fines, disgorgement, imprisonment, exclusion from participation in government funded healthcare programs, such as Medicare and Medicaid, integrity oversight and reporting obligations, contractual damages, reputational harm, diminished profits and future earnings and the curtailment or restructuring of our operations.

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could have a material adverse effect on our business.

We are subject to numerous environmental, health and safety laws and regulations, including those governing laboratory procedures and the handling, use, storage, treatment and disposal of hazardous materials and wastes. Our operations involve the use of hazardous and flammable materials, including chemicals and biological materials. Our operations also produce hazardous waste products. We generally contract with third parties for the

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disposal of these materials and wastes. We cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from our use of hazardous materials, we could be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with civil or criminal fines and penalties.

Although we maintain workers’ compensation insurance to cover us for costs and expenses, we may incur due to injuries to our employees resulting from the use of hazardous materials, this insurance may not provide adequate coverage against potential liabilities. We do not maintain insurance for environmental liability or toxic tort claims that may be asserted against us in connection with our storage or disposal of hazardous and flammable materials, including chemicals and biological materials.

In addition, we may incur substantial costs in order to comply with current or future environmental, health and safety laws and regulations. These current or future laws and regulations may impair our research, development or commercialization efforts. Failure to comply with these laws and regulations also may result in substantial fines, penalties or other sanctions.

Our business activities may be subject to the U.S. Foreign Corrupt Practices Act and similar anti-bribery and anti-corruption laws of other countries in which we operate, as well as U.S. and certain foreign export controls, trade sanctions, and import laws and regulations. Compliance with these legal requirements could limit our ability to compete in foreign markets and subject us to liability if we violate them.

Our business activities are subject to the U.S. Foreign Corrupt Practices Act of 1977, as amended (FCPA), the U.S. domestic bribery statute contained in 18 U.S.C. § 201, the U.S. Travel Act, and similar anti-bribery or anti-corruption laws, regulations or rules of other countries in which we operate. These laws generally prohibit companies and their employees, agents, representatives, business partners, and third-party intermediaries from, directly or indirectly, offering, promising, giving or authorizing others to give anything of value, either directly or indirectly, to recipients in the public or private sector in order to influence official action or otherwise obtain or retain business. Our business is heavily regulated and therefore involves significant interaction with public officials, including officials of non-U.S. governments. Additionally, in many other countries, hospitals are owned and operated by the government, and doctors and other hospital employees would be considered foreign officials under the FCPA. Recently, the SEC and DOJ have increased their FCPA enforcement activities with respect to biotechnology and pharmaceutical companies.

We sometimes leverage third parties to assist with the conduct of our business abroad. We, our employees, agents, representatives, business partners and our third-party intermediaries may have direct or indirect interactions with officials and employees of government agencies or state-owned or affiliated entities and may be held liable for the corrupt or other illegal activities of these employees, agents, representatives, business partners or third-party intermediaries even if we do not explicitly authorize such activities. We cannot assure you that all of our employees, agents, representatives, business partners and third-party intermediaries will not take actions in violation of applicable law for which we may be ultimately held responsible. As we increase our international sales and business, our risks under these laws may increase.

These laws also require that we make and keep books and records that accurately and fairly reflect the transactions of the corporation and to devise and maintain an adequate system of internal accounting controls and compliance procedures designed to prevent violations of anti-corruption laws. There is no certainty that all of our employees, agents, representatives, business partners and third-party intermediaries, or those of our affiliates, will comply with applicable laws and regulations, for which we may be ultimately held responsible.

Violations of these laws and regulations could result in whistleblower complaints, fines, severe civil or criminal sanctions, settlements, prosecution, enforcement actions, damages, adverse media coverage, investigations, loss of export privileges, disgorgement, and other remedial measures and prohibitions on the conduct of our business including our ability to offer our products in one or more countries. Responding to any investigation or action will likely result in a materially significant diversion of management’s attention and resources and significant defense costs and other professional fees. As a general matter, investigations,

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enforcement actions and sanctions could damage our reputation, our brand, our international activities, our ability to attract and retain employees and our business, prospects, operating results and financial condition.

In addition, our products may be subject to U.S. and foreign export controls, trade sanctions and import laws and regulations. Governmental regulation of the import or export of our products, or our failure to obtain any required import or export authorization for our products, when applicable, could harm our international sales and adversely affect our revenue. Compliance with applicable regulatory requirements regarding the export of our products may create delays in the introduction of our products in international markets or, in some cases, prevent the export of our products to some countries altogether. Furthermore, U.S. export control laws and economic sanctions prohibit the shipment of certain products and services to countries, governments, and persons targeted by U.S. sanctions. If we fail to comply with export and import regulations and such economic sanctions, penalties could be imposed, including fines and/or denial of certain export privileges. Moreover, any new export or import restrictions, new legislation or shifting approaches in the enforcement or scope of existing regulations, or in the countries, persons, or products targeted by such regulations, could result in decreased use of our products by, or in our decreased ability to export our products to, existing or potential customers with international operations. Any decreased use of our products or limitation on our ability to export or sell our products would likely adversely affect our business.

Risks Related to Employee Matters, Managing Our Growth and Other Risks Related to Our Business

Our success is highly dependent on our ability to attract and retain highly skilled executive officers and employees.

To succeed, we must recruit, retain, manage and motivate qualified clinical, scientific, technical and management personnel, and we face significant competition for experienced personnel. We are highly dependent on the principal members of our management and scientific and medical staff, particularly Alan Russell, our Co-Founder and Chief Scientific Officer. Additionally, the COVID-19 pandemic may interfere with our ability to hire or retain personnel. If we do not succeed in attracting and retaining qualified personnel, particularly at the management level, it could adversely affect our ability to execute our business plan and harm our operating results. In particular, the loss of one or more of our executive officers could be detrimental to us if we cannot recruit suitable replacements in a timely manner. We do not maintain “key person” insurance for any of our executives or other employees. We could in the future have difficulty attracting and retaining experienced personnel and may be required to expend significant financial resources in our employee recruitment and retention efforts.

Many of the other biotechnology companies that we compete against for qualified personnel have greater financial and other resources, different risk profiles and a longer history in the industry than we do. They also may provide higher compensation, more diverse opportunities and better prospects for career advancement. Some of these characteristics may be more appealing to high-quality candidates than what we have to offer. If we are unable to continue to attract and retain high-quality personnel, the rate and success at which we can discover, develop and commercialize our product candidates will be limited and the potential for successfully growing our business will be harmed.

Additionally, we rely on our scientific founders and other scientific and clinical advisors and consultants to assist us in formulating our research, development and clinical strategies. These advisors and consultants are not our employees and may have commitments to, or consulting or advisory contracts with, other entities that may limit their availability to us. In addition, these advisors and consultants typically will not enter into non-compete agreements with us. If a conflict of interest arises between their work for us and their work for another entity, we may lose their services. Furthermore, our advisors may have arrangements with other companies to assist those companies in developing products or technologies that may compete with ours. In particular, if we are unable to maintain consulting relationships with our scientific founders or if they provide services to our competitors, our development and commercialization efforts will be impaired and our business will be significantly harmed.

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If we are unable to establish sales or marketing capabilities or enter into agreements with third parties to sell or market our product candidates, we may not be able to successfully sell or market our product candidates that obtain regulatory approval.

We currently do not have and have never had a marketing or sales team. In order to commercialize any product candidates, if approved, we must build marketing, sales, distribution, managerial and other non-technical capabilities or make arrangements with third parties to perform these services for each of the territories in which we may have approval to sell or market our product candidates. We may not be successful in accomplishing these required tasks.

Establishing an internal sales or marketing team with technical expertise and supporting distribution capabilities to commercialize our product candidates will be expensive and time-consuming and will require significant attention of our executive officers to manage. Any failure or delay in the development of our internal sales, marketing and distribution capabilities could adversely impact the commercialization of any of our product candidates that we obtain approval to market, if we do not have arrangements in place with third parties to provide such services on our behalf. Alternatively, if we choose to collaborate, either globally or on a territory-by-territory basis, with third parties that have direct sales forces and established distribution systems, either to augment our own sales force and distribution systems or in lieu of our own sales force and distribution systems, we will be required to negotiate and enter into arrangements with such third parties relating to the proposed collaboration and such arrangements may prove to be less profitable than commercializing the product on our own. If we are unable to enter into such arrangements when needed, on acceptable terms, or at all, we may not be able to successfully commercialize any of our product candidates that receive regulatory approval, or any such commercialization may experience delays or limitations. If we are unable to successfully commercialize our approved product candidates, either on our own or through collaborations with one or more third parties, our future product revenue will suffer, and we may incur significant additional losses.

In order to successfully implement our plans and strategies, we will need to grow the size of our organization, and we may experience difficulties in managing this growth.

As of December 31, 2021, we had 31 full-time employees. Of these employees, 22 are engaged in research or product development and clinical activities. In order to successfully implement our development and commercialization plans and strategies, we expect to need additional managerial, operational, sales, marketing, financial and other personnel. Future growth would impose significant added responsibilities on members of management, including:

Our future financial performance and our ability to successfully develop and, if approved, commercialize EDG-5506 and other product candidates will depend, in part, on our ability to effectively manage any future growth, and our management may also have to divert a disproportionate amount of its attention away from day-to-day activities in order to devote a substantial amount of time to managing these growth activities.

We currently rely, and for the foreseeable future will continue to rely, in substantial part on certain independent organizations, advisors and consultants to provide certain services, including key aspects of our research and development, clinical development and manufacturing. We cannot assure you that the services of independent organizations, advisors and consultants will continue to be available to us on a timely basis when needed, or that we can find qualified replacements. In addition, if we are unable to effectively manage our outsourced activities or if the quality or accuracy of the services provided by third-party service providers is compromised for any reason, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain marketing approval of EDG-5506 and any other product candidates or otherwise advance our business. We cannot assure you that we will be able to manage our existing third-party service providers or find other competent outside contractors and consultants on economically reasonable terms, or at all.

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If we are not able to effectively expand our organization by hiring new employees and/or engaging additional third-party service providers, we may not be able to successfully implement the tasks necessary to further develop and commercialize EDG-5506 and other product candidates and, accordingly, may not achieve our research, development and commercialization goals.

Our computer systems, or those of any of our CROs, manufacturers, other contractors or consultants or potential future collaborators, may fail or suffer security or data privacy breaches or incidents or other unauthorized or improper access to, use of, or destruction of our proprietary or confidential data, employee data, or personal data, which could result in additional costs, loss of revenue, significant liabilities, harm to our brand and material disruption of our operations.

Despite the implementation of security measures in an effort to protect systems that store our information, given their size and complexity and the increasing amounts of information maintained on our internal information technology systems, and those of our third-party CROs, other contractors (including sites performing our clinical trials) and consultants, these systems are potentially vulnerable to breakdown or other damage or interruption from service interruptions, system malfunction, natural disasters, terrorism, war and telecommunication and electrical failures, as well as security breaches and incidents from inadvertent or intentional actions by our employees, contractors, consultants, business partners, and/or other third parties, or from cyber-attacks by malicious third parties (including supply chain cyber attacks or the deployment of harmful malware, ransomware, denial-of-service attacks, social engineering and other means to affect service reliability and threaten the confidentiality, integrity and availability of information), which may compromise our system infrastructure or lead to the loss, destruction, alteration, prevention of access to, disclosure, or dissemination of, or damage or unauthorized access to, our data (including trade secrets or other confidential information, intellectual property, proprietary business information, and personal information) or data that is processed or maintained on our behalf, or other assets, which could result in financial, legal, business and reputational harm to us. For example, in 2019, one our CROs experienced a cybersecurity breach which resulted in unauthorized access to certain of our preclinical data. We have received phishing attacks, and companies have, in general, experienced an increase in phishing and social engineering attacks from third parties in connection with the COVID-19 pandemic, and the increase in remote working further increases security threats. To the extent that any disruption or security incident were to result in any loss, destruction, unavailability, alteration, disclosure, or dissemination of, or damage or unauthorized access to, our applications, any other data processed or maintained on our behalf or other assets, or for it to be believed or reported that any of these occurred, we could incur liability, financial harm and reputational damage and the development and commercialization of our product candidates could be delayed. We cannot assure you that our data protection efforts and our investment in information technology, or the efforts or investments of CROs, consultants or other third parties, will prevent significant breakdowns or breaches in systems or other cyber incidents that cause loss, destruction, unavailability, alteration or dissemination of, or damage or unauthorized access to, our data and other data processed or maintained on our behalf or other assets that could have a material adverse effect upon our reputation, business, operations or financial condition. For example, if such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our programs and the development of our product candidates could be delayed. In addition, the loss of clinical trial data for our product candidates could result in delays in our marketing approval efforts and significantly increase our costs to recover or reproduce the data. Further, any such event that leads to loss, damage, or unauthorized access to, or use, alteration, or disclosure or dissemination of, personal information, including personal information regarding our clinical trial subjects or employees, could harm our reputation directly, compel us to comply with federal and/or state breach notification laws and foreign law equivalents, subject us to mandatory corrective action, and otherwise subject us to liability under laws and regulations that protect the privacy and security of personal information, which could result in significant legal and financial exposure and reputational damages that could potentially have an adverse effect on our business.

Notifications and follow-up actions related to a security breach or incident could impact our reputation and cause us to incur significant costs, including legal expenses and remediation costs. For example, the loss of clinical trial data from completed or future clinical trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the lost data. We expect to incur significant costs in an effort to detect and prevent security breaches and incidents, and we may face increased costs and requirements to expend substantial resources in the event of an actual or perceived security breach or incident. We also rely on

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third parties to manufacture our product candidates, and similar events relating to their computer systems could also have a material adverse effect on our business. To the extent that any disruption or security incident were to result in any loss, destruction, or alteration of, unavailability of, or damage or unauthorized access to, our data or other information that is processed or maintained on our behalf, or inappropriate disclosure of or dissemination of any such information, or if any of these were perceived or reported to have occurred, we could be exposed to litigation and governmental investigations, the further development and commercialization of our product candidates could be delayed, and we could be subject to significant fines or penalties for any noncompliance with certain state, federal and/or international privacy and security laws.

Our insurance policies may not be adequate to compensate us for the potential losses arising from any such disruption in or, failure or security breach or incident of or impacting our systems or third-party systems where information important to our business operations or commercial development is stored. In addition, such insurance may not be available to us in the future on economically reasonable terms, or at all. Further, our insurance may not cover all claims made against us and could have high deductibles in any event, and defending a suit, regardless of its merit, could be costly and divert management attention.

Our operations are vulnerable to interruption by fire, earthquakes, power loss, telecommunications failure, terrorist activity, pandemics and other events beyond our control, which could harm our business.

Our facilities are located in Boulder, Colorado. We have not undertaken a systematic analysis of the potential consequences to our business and financial results from a major flood, blizzard, fire, earthquake, power loss, terrorist activity, pandemics or other disasters and do not have a recovery plan for such disasters. In addition, we do not carry sufficient insurance to compensate us for actual losses from interruption of our business that may occur, and any losses or damages incurred by us could harm our business. Also, our contract development and manufacturing organizations’ (CDMOs) and suppliers’ facilities are located in multiple locations where other natural disasters or similar events which could severely disrupt our operations, could expose us to liability and could have a material adverse effect on our business. The occurrence of any of these business disruptions could seriously harm our operations and financial condition and increase our costs and expenses.

A variety of risks associated with marketing our product candidates internationally could materially adversely affect our business.

We may seek regulatory approval of our product candidates outside of the United States and, accordingly, we expect that we will be subject to additional risks related to operating in foreign countries if we obtain the necessary approvals, including:

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These and other risks associated with our international operations may materially adversely affect our ability to attain or maintain profitable operations.

Risks Related to Our Intellectual Property

Our success depends on our ability to protect our intellectual property and our proprietary technologies.

Our commercial success depends in part on our ability to obtain and maintain patent protection and trade secret protection for our product candidates, proprietary technologies and their uses as well as our ability to operate without infringing upon the proprietary rights of others. We generally seek to protect our proprietary position by filing patent applications in the United States and abroad related to our product candidates, proprietary technologies and their uses that are important to our business. We also seek to protect our proprietary position by acquiring or in-licensing relevant issued patents or pending applications from third parties.

Pending patent applications cannot be enforced against third parties practicing the technology claimed in such applications unless, and until, patents issue from such applications, and then only to the extent the issued claims cover the technology. There can be no assurance that our patent applications or the patent applications of our licensor will result in additional patents being issued or that issued patents will afford sufficient protection against competitors with similar technology, nor can there be any assurance that the patents issued will not be infringed, designed around or invalidated by third parties.

Even issued patents may later be found invalid or unenforceable or may be modified or revoked in proceedings instituted by third parties before various patent offices or in courts. The degree of future protection for our and our licensor’s proprietary rights is uncertain. Only limited protection may be available and may not adequately protect our rights or permit us to gain or keep any competitive advantage. These uncertainties and/or limitations in our ability to properly protect the intellectual property rights relating to our product candidates could have a material adverse effect on our financial condition and results of operations.

We cannot be certain that the claims in our U.S. pending patent applications, corresponding international patent applications and patent applications in certain foreign territories, or that of our licensor, will be considered patentable by the United States Patent and Trademark Office (USPTO), courts in the United States or by the patent offices and courts in foreign countries, nor can we be certain that issued claims will not be found invalid or unenforceable if challenged.

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The patent application process is subject to numerous risks and uncertainties, and there can be no assurance that we or any of our potential future collaborators will be successful in protecting our product candidates by obtaining and defending patents. These risks and uncertainties include the following:

The patent prosecution process is also expensive and time-consuming, and we and our licensor may not be able to file and prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner or in all jurisdictions where protection may be commercially advantageous. It is also possible that we or our licensor will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection.

In addition, although we enter into non-disclosure and confidentiality agreements with parties who have access to patentable aspects of our research and development output, such as our employees, outside scientific collaborators, CROs, third-party manufacturers, consultants, advisors and other third parties, any of these parties may breach such agreements and disclose such output before a patent application is filed, thereby jeopardizing our ability to seek patent protection.

Given the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such candidates might expire before or shortly after such candidates are commercialized. As a result, our intellectual property may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours.

If the scope of any patent protection we obtain is not sufficiently broad, or if we lose any of our patent protection, our ability to prevent our competitors from commercializing similar or identical product candidates would be adversely affected.

The patent position of biopharmaceutical companies generally is highly uncertain, involves complex legal and factual questions, and has been the subject of much litigation in recent years. As a result, the issuance, scope, validity, enforceability and commercial value of our patent rights are highly uncertain. Our pending and future patent applications and those of our licensor may not result in patents being issued which protect our product candidates or which effectively prevent others from commercializing competitive product candidates.

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Moreover, the coverage claimed in a patent application can be significantly reduced before the patent is issued, and its scope can be reinterpreted after issuance. Even if patent applications we own or in-license currently or in the future issue as patents, they may not issue in a form that will provide us with any meaningful protection, prevent competitors or other third parties from competing with us, or otherwise provide us with any competitive advantage. Any patents that we own or in-license may be challenged or circumvented by third parties or may be narrowed or invalidated as a result of challenges by third parties. Consequently, we do not know whether our product candidates will be protectable or remain protected by valid and enforceable patents. Our competitors or other third parties may be able to circumvent our patents or the patents of our licensors by developing similar or alternative technologies or products in a non-infringing manner which could materially adversely affect our business, financial condition, results of operations and prospects.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and our patents or the patents of our licensor may be challenged in the courts or patent offices in the United States and abroad. We may be subject to a third-party pre-issuance submission of prior art to the USPTO, or become involved in opposition, derivation, revocation, reexamination, post-grant review (PGR) and inter partes review (IPR), or other similar proceedings challenging our owned patent rights. An adverse determination in any such submission, proceeding or litigation could reduce the scope of, or invalidate or render unenforceable, our patent rights, allow third parties to commercialize our product candidates and compete directly with us, without payment to us, or result in our inability to manufacture or commercialize products without infringing third-party patent rights. Moreover, our patents or the patents of our licensor may become subject to post-grant challenge proceedings, such as oppositions in a foreign patent office, that challenge our priority of invention or other features of patentability with respect to our patents and patent applications and those of our licensor. Such challenges may result in loss of patent rights, loss of exclusivity or in patent claims being narrowed, invalidated or held unenforceable, which could limit our ability to stop others from using or commercializing similar or identical technology and products, or limit the duration of the patent protection of our product candidates. Such proceedings also may result in substantial cost and require significant time from our scientists and management, even if the eventual outcome is favorable to us. In addition, if the breadth or strength of protection provided by our patents and patent applications or the patents and patent applications of our licensor is threatened, regardless of the outcome, it could dissuade companies from collaborating with us to license, develop or commercialize current or future product candidates.

Intellectual property rights do not necessarily address all potential threats to our competitive advantage.

The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights have limitations and may not adequately protect our business or permit us to maintain our competitive advantage. For example:

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Should any of these events occur, it could significantly harm our business, results of operations and prospects.

Our commercial success depends significantly on our ability to operate without infringing the patents and other proprietary rights of third parties. Claims by third parties that we infringe their proprietary rights may result in liability for damages or prevent or delay our developmental and commercialization efforts.

Our commercial success depends in part on avoiding infringement of the patents and proprietary rights of third parties. However, our research, development and commercialization activities may be subject to claims that we infringe or otherwise violate patents or other intellectual property rights owned or controlled by third parties. Other entities may have or obtain patents or proprietary rights that could limit our ability to make, use, sell, offer for sale or import our product candidates and products that may be approved in the future, or impair our competitive position. There is a substantial amount of litigation, both within and outside the United States, involving patent and other intellectual property rights in the biopharmaceutical industry, including patent infringement lawsuits, oppositions, reexaminations, IPR proceedings and PGR proceedings before the USPTO and/or corresponding foreign patent offices. Numerous third-party U.S. and foreign issued patents and pending patent applications exist in the fields in which we are developing product candidates. There may be third-party patents or patent applications with claims to materials, formulations, methods of manufacture or methods for treatment related to the use or manufacture of our product candidates.

As the biopharmaceutical industry expands and more patents are issued, the risk increases that our product candidates may be subject to claims of infringement of the patent rights of third parties. Because patent applications are maintained as confidential for a certain period of time, until the relevant application is published, we may be unaware of third-party patents that may be infringed by commercialization of any of our product candidates, and we cannot be certain that we were the first to file a patent application related to a product candidate or technology. Moreover, because patent applications can take many years to issue, there may be currently-pending patent applications that may later result in issued patents that our product candidates may infringe. In addition, identification of third-party patent rights that may be relevant to our technology is difficult because patent searching is imperfect due to differences in terminology among patents, incomplete databases and the difficulty in assessing the meaning of patent claims. There is also no assurance that there is not prior art of which we are aware, but which we do not believe is relevant to our business, which may, nonetheless, ultimately be found to limit our ability to make, use, sell, offer for sale or import our products that may be approved in the future, or impair our competitive position. In addition, third parties may obtain patents in the future and claim that use of our technologies infringes upon these patents. Any claims of patent infringement asserted by third parties would be time consuming and could:

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Although no third-party has asserted a claim of patent infringement against us as of the date of this periodic report, others may hold proprietary rights that could prevent our product candidates from being marketed. For example, we are aware of an issued patent that claims a method of treatment based upon a general mode of action. These claims could be alleged to cover EDG-5506 in certain treatment indications. While we believe that these patents are difficult to enforce and that we would have valid defenses to these claims of patent infringement, we cannot be certain that we would prevail in any dispute and we cannot be certain how an adverse determination would affect our business.

It is possible that a third party may assert a claim of patent infringement directed at any of our product candidates. Any patent-related legal action against us claiming damages and seeking to enjoin commercial activities relating to our products, treatment indications, or processes could subject us to significant liability for damages, including treble damages if we were determined to willfully infringe, and require us to obtain a license to manufacture or market our product candidates. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. We cannot predict whether we would prevail in any such actions or that any license required under any of these patents would be made available on commercially acceptable terms, if at all. Moreover, even if we or our future strategic partners were able to obtain a license, the rights may be nonexclusive, which could result in our competitors gaining access to the same intellectual property. In addition, we cannot be certain that we could redesign our product candidates, treatment indications, or processes to avoid infringement, if necessary. Accordingly, an adverse determination in a judicial or administrative proceeding, or the failure to obtain necessary licenses, could prevent us from developing and commercializing our product candidates, which could harm our business, financial condition and operating results. In addition, intellectual property litigation, regardless of its outcome, may cause negative publicity and could prohibit us from marketing or otherwise commercializing our product candidates and technology.

Parties making claims against us may be able to sustain the costs of complex patent litigation more effectively than we can because they have substantially greater resources. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation or administrative proceedings, there is a risk that some of our confidential information could be compromised by disclosure. In addition, any uncertainties resulting from the initiation and continuation of any litigation could have a material adverse effect on our ability to raise additional funds or otherwise have a material adverse effect on our business, results of operations, financial condition and prospects.

We may in the future pursue invalidity proceedings with respect to third-party patents. The outcome following legal assertions of invalidity is unpredictable. Even if resolved in our favor, these legal proceedings may cause us to incur significant expenses and could distract our technical and management personnel from their normal responsibilities. In addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments and if securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of our common stock. Such proceedings could substantially increase our operating losses and reduce the resources available for development activities or any future sales, marketing or distribution activities. We may not have sufficient financial or other resources to conduct such proceedings adequately. Some of these third parties may be able to sustain the costs of such proceedings more effectively than we can because of their greater financial resources. Uncertainties resulting from the initiation and continuation of patent proceedings could compromise our ability to compete in the marketplace. If we do not prevail in the patent proceedings the third parties may assert a claim of patent infringement directed at our product candidates.

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We may not be successful in obtaining or maintaining necessary rights to our product candidates through acquisitions and in-licenses.

Many pharmaceutical companies, biotechnology companies, and academic institutions may have patents and patent applications potentially relevant to our business. We may find it necessary or prudent to obtain licenses to such patents from such third-party intellectual property holders, for example, in order to avoid infringing these third-party patents. We have entered into a license agreement with The Ohio State Innovation Foundation pursuant to which we have acquired the exclusive right to certain patents and patent applications in the field of muscular diseases/disorders. We may also require licenses from third parties for certain technologies for use with future product candidates. We may be unable to acquire or in-license any compositions, methods of use, processes or other third-party intellectual property rights from third parties that we identify as necessary for our product candidates. The licensing and acquisition of third-party intellectual property rights is a competitive area, and a number of more established companies may pursue strategies to license or acquire third-party intellectual property rights that we may consider attractive or necessary. These established companies may have a competitive advantage over us due to their size, capital resources and greater clinical development and commercialization capabilities. In addition, companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We also may be unable to license or acquire third-party intellectual property rights on terms that would allow us to make an appropriate return on our investment or at all. If we are unable to successfully obtain rights to required third-party intellectual property rights or maintain the existing intellectual property rights we have, we may have to abandon development of the relevant program or product candidate, which could have a material adverse effect on our business, financial condition, results of operations, and prospects.

We may be involved in lawsuits to protect or enforce our patents or our licensor’s patents, which could be expensive, time consuming and unsuccessful. Further, our issued patents or our licensor’s patents could be found invalid or unenforceable if challenged in court.

Competitors may infringe our intellectual property rights. To prevent infringement or unauthorized use, we may be required to file infringement claims, which can be expensive and time-consuming. In addition, in a patent infringement proceeding, a court may decide that a patent we own or in-license is not valid, is unenforceable and/or is not infringed. If we or any of our potential future collaborators were to initiate legal proceedings against a third-party to enforce a patent directed at one of our product candidates, the defendant could counterclaim that our patent or the patent of our licensor is invalid and/or unenforceable in whole or in part. In patent litigation in the United States, defendant counterclaims alleging invalidity and/or unenforceability are commonplace. Grounds for a validity challenge include an alleged failure to meet any of several statutory requirements, including lack of novelty, obviousness, lack of sufficient written description, non-enablement, or obviousness-type double patenting. Grounds for an unenforceability assertion could include an allegation that someone connected with prosecution of the patent withheld relevant information from the USPTO or made a misleading statement during prosecution.

Third parties may also raise similar invalidity claims before the USPTO or patent offices abroad, even outside the context of litigation. Such mechanisms include re-examination, PGR, IPR, derivation proceedings, and equivalent proceedings in foreign jurisdictions (e.g., opposition proceedings). The outcome following legal assertions of invalidity and/or unenforceability is unpredictable. With respect to the validity question, for example, we cannot be certain that there is no invalidating prior art, of which we, our licensor, and the patent examiners are unaware during prosecution. There is also no assurance that there is not prior art of which we are aware, but which we do not believe affects the validity or enforceability of a claim in our patents and patent applications or the patents and patent applications of our licensor, which may, nonetheless, ultimately be found to affect the validity or enforceability of a claim. If a third-party were to prevail on a legal assertion of invalidity or unenforceability, we would lose at least part, and perhaps all, of the patent protection on our technology or proprietary drug discovery platform, or any product candidates that we may develop. Such a loss of patent protection would have a material adverse impact on our business, financial condition, results of operations and prospects.

In addition, if the breadth or strength of protection provided by our patents and patent applications or the patents and patent applications of our licensor is threatened, it could dissuade companies from collaborating with us to license, develop or commercialize current or future product candidates.

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Even if resolved in our favor, litigation or other legal proceedings relating to our intellectual property rights may cause us to incur significant expenses, and could distract our technical and management personnel from their normal responsibilities. In addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments and if securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of our common stock. Such litigation or proceedings could substantially increase our operating losses and reduce the resources available for development activities or any future sales, marketing or distribution activities. We may not have sufficient financial or other resources to conduct such litigation or proceedings adequately. Some of our competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their greater financial resources. Uncertainties resulting from the initiation and continuation of patent litigation or other proceedings could compromise our ability to compete in the marketplace. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation or other legal proceedings relating to our intellectual property rights, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation or other proceedings.

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In addition, the issuance of a patent does not give us the right to practice the patented invention. Third parties may have blocking patents that could prevent us from marketing our own patented product and practicing our own patented technology.

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Intellectual property litigation may lead to unfavorable publicity that harms our reputation and causes the market price of our common shares to decline.

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During the course of any intellectual property litigation, there could be public announcements of the initiation of the litigation as well as results of hearings, rulings on motions, and other interim proceedings in the litigation. If securities analysts or investors regard these announcements as negative, the perceived value of our existing products, programs or intellectual property could be diminished. Accordingly, the market price of shares of our common stock may decline. Such announcements could also harm our reputation or the market for our future products, which could have a material adverse effect on our business.

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Derivation proceedings may be necessary to determine priority of inventions, and an unfavorable outcome may require us to cease using the related technology or to attempt to license rights from the prevailing party.

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Derivation proceedings provoked by third parties or brought by us or declared by the USPTO may be necessary to determine the priority of inventions with respect to our patents or patent applications or those of our licensor. An unfavorable outcome could require us to cease using the related technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if the prevailing party does not offer us a license on commercially reasonable terms. Our defense of derivation proceedings may fail and, even if successful, may result in substantial costs and distract our management and other employees. In addition, the uncertainties associated with such proceedings could have a material adverse effect on our ability to raise the funds necessary to continue our clinical trials, continue our research programs, license necessary technology from third parties or enter into development or manufacturing partnerships that would help us bring our product candidates to market.

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Changes in U.S. patent law, or laws in other countries, could diminish the value of patents in general, thereby impairing our ability to protect our product candidates.

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As is the case with other pharmaceutical companies, our success is heavily dependent on intellectual property, particularly patents. Obtaining and enforcing patents in the pharmaceutical industry involve a high degree of technological and legal complexity. Therefore, obtaining and enforcing pharmaceutical patents is costly, time consuming and inherently uncertain. Changes in either the patent laws or in the interpretations of patent laws in the United States and other countries may diminish the value of our intellectual property and may increase the uncertainties and costs surrounding the prosecution of patent applications and the enforcement or defense of issued patents. We cannot predict the breadth of claims that may be allowed or enforced in our patents or in third-party patents. In addition, Congress or other foreign legislative bodies may pass patent reform legislation that is unfavorable to us.

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For example, the U.S. Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on decisions by the U.S. Congress, the U.S. federal courts, the USPTO, or similar authorities in foreign jurisdictions, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patent and the patents we might obtain or license in the future.

We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property.

We may also be subject to claims that former employees or other third parties have an ownership interest in our patents or other intellectual property. Litigation may be necessary to defend against these and other claims challenging inventorship or ownership. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights. Such an outcome could have a material adverse effect on our business. Even if we are successful in defending against such claims, litigation could result in substantial costs and distraction to management and other employees.

Patent terms may be inadequate to protect our competitive position on our product candidates for an adequate amount of time.

Patents have a limited lifespan. In the United States, if all maintenance fees are timely paid, the natural expiration of a patent is generally 20 years from its earliest U.S. non-provisional filing date. Various extensions may be available, but the life of a patent, and the protection it affords, is limited. Even if patents covering our product candidates are obtained, once the patent life has expired, we may be open to competition from competitive products. Given the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such candidates might expire before or shortly after such candidates are commercialized. As a result, our patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours.

If we do not obtain patent term extension for our product candidates, our business may be materially harmed.

Depending upon the timing, duration and specifics of FDA marketing approval of our product candidates, one or more of our U.S. patents or those of our licensor may be eligible for limited patent term restoration under the Drug Price Competition and Patent Term Restoration Act of 1984 (Hatch-Waxman Amendments). The Hatch- Waxman Amendments permit a patent restoration term of up to five years as compensation for patent term lost during product development and the FDA regulatory review process. A maximum of one patent may be extended per FDA approved product as compensation for the patent term lost during the FDA regulatory review process. A patent term extension cannot extend the remaining term of a patent beyond a total of 14 years from the date of product approval and only those claims covering such approved drug product, a method for using it or a method for manufacturing it may be extended. Patent term extension may also be available in certain foreign countries upon regulatory approval of our product candidates. However, we may not be granted an extension because of, for example, failing to apply within applicable deadlines, failing to apply prior to expiration of relevant patents or otherwise failing to satisfy applicable requirements. Moreover, the applicable time period or the scope of patent protection afforded could be less than we request. If we are unable to obtain patent term extension or restoration or the term of any such extension is less than we request, our competitors may obtain approval of competing products following our patent expiration, and our revenue could be reduced, possibly materially. Further, if this occurs, our competitors may take advantage of our investment in development and trials by referencing our clinical and preclinical data and launch their product earlier than might otherwise be the case.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents in all countries throughout the world would be prohibitively expensive, and our intellectual property rights in some countries outside the United States can be less extensive than those in the United States. In addition, the laws of some foreign countries do not protect intellectual property

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rights to the same extent as federal and state laws in the United States. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the United States or from selling or importing products made using our inventions in and into the United States or other jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and, further, may export otherwise infringing products to territories where we have patent protection, but enforcement is not as strong as that in the United States. These products may compete with our product candidates, and our patents, the patents of our licensors, or other intellectual property rights may not be effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of many foreign countries do not favor the enforcement of patents and other intellectual property protection, which could make it difficult for us to stop the infringement of our patents or our licensor’s patents or marketing of competing products in violation of our proprietary rights. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents or the patents of our licensors at risk of being invalidated or interpreted narrowly and our patent applications or the patent applications of our licensor at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate, and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

Many countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. In addition, many countries limit the enforceability of patents against government agencies or government contractors. In these countries, the patent owner may have limited remedies, which could materially diminish the value of such patent. If we are forced to grant a license to third parties with respect to any patents relevant to our business, our competitive position may be impaired, and our business, financial condition, results of operations and prospects may be adversely affected.

Obtaining and maintaining our patent protection depends on compliance with various procedural, documentary, fee payment and other requirements imposed by regulations and governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.

Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on patents and/or applications will be due to the USPTO and various foreign patent offices at various points over the lifetime of our patents and/or applications and those of our licensors. We have systems in place to remind us to pay these fees, and we rely on our outside patent annuity service to pay these fees when due. Additionally, the USPTO and various foreign patent offices require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. We employ reputable law firms and other professionals to help us comply, and in many cases, an inadvertent lapse can be cured by payment of a late fee or by other means in accordance with rules applicable to the particular jurisdiction. However, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. If such an event were to occur, it could have a material adverse effect on our business.

If our trademarks and trade names are not adequately protected, then we may not be able to build name recognition in our markets of interest and our business may be adversely affected.

We intend to use registered or unregistered trademarks or trade names to brand and market ourselves and our products. Our trademarks or trade names may be challenged, infringed, circumvented or declared generic or determined to be infringing on other marks. We may not be able to protect our rights to these trademarks and trade names, which we need to build name recognition among potential partners or customers in our markets of interest. At times, competitors may adopt trade names or trademarks similar to ours, thereby impeding our ability to build brand identity and possibly leading to market confusion. In addition, there could be potential trade name or trademark infringement claims brought by owners of other registered trademarks or trademarks that incorporate

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variations of our registered or unregistered trademarks or trade names. Over the long term, if we are unable to establish name recognition based on our trademarks and trade names, then we may not be able to compete effectively, and our business may be adversely affected. Our efforts to enforce or protect our proprietary rights related to trademarks, trade secrets, domain names, copyrights or other intellectual property may be ineffective and could result in substantial costs and diversion of resources and could adversely affect our financial condition or results of operations.

If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed.

In addition, we rely on the protection of our trade secrets, including unpatented know-how, technology and other proprietary information to maintain our competitive position. Although we have taken steps to protect our trade secrets and unpatented know-how, including entering into confidentiality agreements with third parties, and confidential information and inventions agreements with employees, consultants and advisors, we cannot provide any assurances that all such agreements have been duly executed, and any of these parties may breach the agreements and disclose our proprietary information, including our trade secrets, and we may not be able to obtain adequate remedies for such breaches. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret is difficult, expensive and time-consuming, and the outcome is unpredictable. In addition, some courts inside and outside the United States are less willing or unwilling to protect trade secrets.

Moreover, third parties may still obtain this information or may come upon this or similar information independently, and we would have no right to prevent them from using that technology or information to compete with us. If any of these events occurs or if we otherwise lose protection for our trade secrets, the value of this information may be greatly reduced, and our competitive position would be harmed. If we do not apply for patent protection prior to such publication or if we cannot otherwise maintain the confidentiality of our proprietary technology and other confidential information, then our ability to obtain patent protection or to protect our trade secret information may be jeopardized.

We may be subject to claims that we or our employees have wrongfully used or disclosed alleged confidential information or trade secrets.

We have entered into and may enter in the future into non-disclosure and confidentiality agreements to protect the proprietary positions of third parties, such as outside scientific collaborators, CROs, third-party manufacturers, consultants, advisors, potential partners, lessees of shared multi-company property and other third parties. We may become subject to litigation where a third-party asserts that we or our employees inadvertently or otherwise breached the agreements and used or disclosed trade secrets or other information proprietary to the third parties. Defense of such matters, regardless of their merit, could involve substantial litigation expense and be a substantial diversion of employee resources from our business. We cannot predict whether we would prevail in any such actions. Moreover, intellectual property litigation, regardless of its outcome, may cause negative publicity and could prohibit us from marketing or otherwise commercializing our product candidates and technology. Failure to defend against any such claim could subject us to significant liability for monetary damages or prevent or delay our developmental and commercialization efforts, which could adversely affect our business. Even if we are successful in defending against these claims, litigation could result in substantial costs and be a distraction to our management team and other employees.

Parties making claims against us may be able to sustain the costs of complex intellectual property litigation more effectively than we can because they have substantially greater resources. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure. In addition, any uncertainties resulting from the initiation and continuation of any litigation could have a material adverse effect on our ability to raise additional funds or otherwise have a material adverse effect on our business, operating results, financial condition and prospects.

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We may be subject to claims that we have wrongfully hired an employee from a competitor or that we or our employees have wrongfully used or disclosed alleged confidential information or trade secrets of their former employers.

As is common in the pharmaceutical industry, in addition to our employees, we engage the services of consultants to assist us in the development of our product candidates. Many of these consultants, and many of our employees, were previously employed at, or may have previously provided or may be currently providing consulting services to, other pharmaceutical companies including our competitors or potential competitors. We may become subject to claims that we, our employees or a consultant inadvertently or otherwise used or disclosed trade secrets or other information proprietary to their former employers or their former or current clients. Litigation may be necessary to defend against these claims. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel, which could adversely affect our business. Even if we are successful in defending against these claims, litigation could result in substantial costs and be a distraction to our management team and other employees.

Our rights to develop and commercialize our technology and product candidates may be subject, in part, to the terms and conditions of licenses granted to us by others.

We have entered into a license agreement with The Ohio State Innovation Foundation pursuant to which we have acquired the exclusive right to certain patents and patent applications in the field of muscular diseases/disorders. We may enter into additional license agreements in the future with others to advance our research or allow commercialization of product candidates. These and other licenses may not provide exclusive rights to use such intellectual property and technology in all relevant fields of use and in all territories in which we may wish to develop or commercialize our technology and products in the future.

In addition, subject to the terms of any such license agreements, we may not have the right to control the preparation, filing, prosecution, maintenance, enforcement, and defense of patents and patent applications covering the technology that we license from third parties. In such an event, we cannot be certain that these patents and patent applications will be prepared, filed, prosecuted, maintained, enforced, and defended in a manner consistent with the best interests of our business. If our licensor fails to prosecute, maintain, enforce, and defend such patents, or lose rights to those patents or patent applications, the rights we have licensed may be reduced or eliminated, and our right to develop and commercialize any of our products that are subject of such licensed rights could be adversely affected.

Our licensor may have relied on third-party consultants or collaborators or on funds from third parties such that our licensor are not the sole and exclusive owners of the patents we in-licensed. If other third parties have ownership rights to our in-licensed patents, they may be able to license such patents to our competitors, and our competitors could market competing products and technology. This could have a material adverse effect on our competitive position, business, financial conditions, results of operations, and prospects.

It is possible that we may be unable to obtain additional licenses at a reasonable cost or on reasonable terms, if at all. Even if we are able to obtain a license, it may be non-exclusive, thereby giving our competitors access to the same technologies licensed to us. In that event, we may be required to expend significant time and resources to redesign our technology, product candidates, or the methods for manufacturing them or to develop or license replacement technology, all of which may not be feasible on a technical or commercial basis. If we are unable to do so, we may be unable to develop or commercialize the affected product candidates, which could harm our business, financial condition, results of operations, and prospects significantly. We cannot provide any assurances that third-party patents do not exist which might be enforced against our current technology, manufacturing methods, product candidates, or future methods or products resulting in either an injunction prohibiting our manufacture or future sales, or, with respect to our future sales, an obligation on our part to pay royalties and/or other forms of compensation to third parties, which could be significant.

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If we fail to comply with our obligations in the agreements under which we license intellectual property rights from third parties or otherwise experience disruptions to our business relationships with our licensors, we could lose license rights that are important to our business.

Disputes may arise between us and our licensor or potential licensors regarding intellectual property subject to a license agreement, including:

In addition, the agreements under which we license intellectual property or technology from third parties are complex, and certain provisions in such agreements may be susceptible to multiple interpretations. The resolution of any contract interpretation disagreement that may arise could narrow what we believe to be the scope of our rights to the relevant intellectual property or technology, or increase what we believe to be our financial or other obligations under the relevant agreement, either of which could have a material adverse effect on our business, financial condition, results of operations, and prospects. Moreover, if disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on commercially acceptable terms, we may be unable to successfully develop and commercialize the affected product candidates, which could have a material adverse effect on our business, financial conditions, results of operations, and prospects.

In spite of our best efforts, our licensor or potential licensors might conclude that we have materially breached our license agreements and might therefore terminate the license agreements, thereby removing our ability to develop and commercialize products and technology covered by these license agreements. If these in-licenses are terminated, or if the underlying patents fail to provide the intended exclusivity, competitors would have the freedom to seek regulatory approval of, and to market, products identical to ours. This could have a material adverse effect on our competitive position, business, financial conditions, results of operations, and prospects.

The patent protection and patent prosecution for some of our product candidates may be dependent on third parties.

While we normally seek to obtain the right to control prosecution, maintenance and enforcement of the patents relating to our product candidates, there may be times when the filing and prosecution activities for patents relating to our product candidates are controlled by our licensor, potential licensors or collaboration partners. If any of our licensor, potential licensors or collaboration partners fail to prosecute, maintain and enforce such patents and patent applications in a manner consistent with the best interests of our business, including by payment of all applicable fees for patents covering our product candidates, we could lose our rights to the intellectual property or our exclusivity with respect to those rights, our ability to develop and commercialize those product candidates may be adversely affected and we may not be able to prevent competitors from making, using and selling competing products. In addition, even where we have the right to control patent prosecution of patents and patent applications we have licensed to and from third parties, we may still be adversely affected or prejudiced by actions or inactions of our licensees, our licensors and their counsel that took place prior to the date upon which we assumed control over patent prosecution.

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Intellectual property discovered through government funded programs may be subject to federal regulations such as “march-in” rights, certain reporting requirements and a preference for U.S.-based companies. Compliance with such regulations may limit our exclusive rights and limit our ability to contract with non-U.S. manufacturers.

We have in-licensed patent applications that were generated through the use of U.S. government funding or grants, and may acquire or license in the future intellectual property rights that have been generated through the use of U.S. government funding or grants. Pursuant to the Bayh-Dole Act of 1980, the U.S. government has certain rights in inventions developed with government funding. These U.S. government rights include a non-exclusive, non-transferable, irrevocable worldwide license to use inventions for any governmental purpose. In addition, the U.S. government has the right, under certain limited circumstances, to require us to grant exclusive, partially exclusive, or non-exclusive licenses to any of these inventions to a third-party if it determines that: (1) adequate steps have not been taken to commercialize the invention; (2) government action is necessary to meet public health or safety needs; or (3) government action is necessary to meet requirements for public use under federal regulations (also referred to as “march-in rights”). If the U.S. government exercised its march-in rights in our future intellectual property rights that are generated through the use of U.S. government funding or grants, we could be forced to license or sublicense intellectual property developed by us or that we license on terms unfavorable to us, and there can be no assurance that we would receive compensation from the U.S. government for the exercise of such rights. The U.S. government also has the right to take title to these inventions if the grant recipient fails to disclose the invention to the government or fails to file an application to register the intellectual property within specified time limits. Intellectual property generated under a government funded program is also subject to certain reporting requirements, compliance with which may require us to expend substantial resources. In addition, the U.S. government requires that any products embodying any of these inventions or produced through the use of any of these inventions be manufactured substantially in the United States. This preference for U.S. industry may be waived by the federal agency that provided the funding if the owner or assignee of the intellectual property can show that reasonable but unsuccessful efforts have been made to grant licenses on similar terms to potential licensees that would be likely to manufacture substantially in the United States or that under the circumstances domestic manufacture is not commercially feasible. This preference for U.S. industry may limit our ability to contract with non-U.S. product manufacturers for products covered by such intellectual property.

Risks Related to Our Dependence on Third Parties

We rely, and expect to continue to rely, on third parties to conduct our clinical trials and those third parties may not perform satisfactorily, including failing to meet deadlines for the completion of such trials, research and studies, which may harm our business.

We do not have the ability to independently conduct our clinical trials. We currently rely on third parties, such as CROs, clinical data management organizations, medical institutions and clinical investigators, to conduct our current and planned clinical trials of EDG-5506 and we expect to continue to rely upon third parties to conduct additional clinical trials for EDG-5506 and other product candidates. Third parties have a significant role in the conduct of our clinical trials and the subsequent collection and analysis of data. These third parties are not our employees, and except for remedies available to us under our agreements with such third parties, we have limited ability to control the amount or timing of resources that any such third-party will devote to our clinical trials. Furthermore, the competition for third parties has increased as a result of COVID-19. The third parties we rely on for these services may also have relationships with other entities, some of which may be our competitors. Some of these third parties may terminate their engagements with us at any time. If we need to enter into alternative arrangements with a third-party, it would delay our drug development activities.

Our reliance on these third parties for such drug development activities will reduce our control over these activities but will not relieve us of our regulatory responsibilities. For example, we will remain responsible for ensuring that each of our clinical trials is conducted in accordance with the general investigational plan and protocols for the trial. Moreover, the FDA requires us to comply with GCP standards, regulations for conducting, recording and reporting the results of clinical trials to assure that data and reported results are reliable and accurate and that the rights, integrity and confidentiality of trial participants are protected. The EMA also requires us to comply with similar standards. Regulatory authorities enforce these GCP requirements through periodic inspections of trial sponsors, principal investigators and trial sites. If we or any of our CROs fail to comply with

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applicable GCP requirements, the clinical data generated in our clinical trials may be deemed unreliable and the FDA, EMA or comparable foreign regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. We cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials substantially comply with GCP regulations. In addition, our clinical trials must be conducted with product produced under current cGMP regulations. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the marketing approval process.

If these third parties do not successfully carry out their contractual duties, meet expected deadlines or conduct our clinical trials in accordance with regulatory requirements or our stated protocols, we will not be able to obtain, or may be delayed in obtaining, marketing approvals for our product candidates and will not be able to, or may be delayed in our efforts to, successfully commercialize our product candidates.

We also expect to rely on third parties to store and distribute drug supplies for our clinical trials. Any performance failure on the part of our distributors could delay clinical development or marketing approval of our product candidates or commercialization of our products, producing additional losses and depriving us of potential product revenue.

We contract with third parties for the production of our product candidates for preclinical studies and, in the case of EDG-5506, our ongoing clinical trial, and expect to continue to do so for additional clinical trials and ultimately for commercialization. This reliance on third parties increases the risk that we will not have sufficient quality and quantities of our product candidates or such quantities at an acceptable cost, which could delay, prevent or impair our development or commercialization efforts.

We do not currently have the infrastructure or internal capability to manufacture supplies of our product candidates for use in development and commercialization. We rely, and expect to continue to rely, on third-party manufacturers for the production of our product candidates for preclinical studies and clinical trials under the guidance of members of our organization. In the case of EDG-5506, we have switched from an international supplier to a supplier based in the United States to minimize manufacturing supply chain disruptions as a result of COVID-19. Competition for third-party manufacturers has increased as a result of COVID-19. We will be relying on a single third-party manufacturer and we currently have no alternative manufacturer in place. Changing our third-party manufacturer could result in delays in our manufacturing supply chain which could delay or otherwise impact our development of EDG-5506 and result in increased costs related to EDG-5506. We do not have long-term supply agreements, and we purchase our required drug product on a purchase order basis, which means that aside from any binding purchase orders we have from time to time, our supplier could cease supplying to us or change the terms on which it is willing to continue supplying to us at any time. If we were to experience an unexpected loss of supply of EDG-5506 or any other product candidates for any reason, whether as a result of manufacturing, supply or storage issues or otherwise, we could experience delays, disruptions, suspensions or terminations of, or be required to restart or repeat, any pending or ongoing clinical trials.

We expect to continue to rely on third-party manufacturers for the commercial supply of any of our product candidates for which we obtain marketing approval. We may be unable to maintain or establish required agreements with third-party manufacturers or to do so on acceptable terms. Even if we are able to establish agreements with third-party manufacturers, reliance on third-party manufacturers entails additional risks, including:

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We do not have complete control over all aspects of the manufacturing process of our CDMOs and are dependent on these CDMOs for compliance with cGMP regulations for manufacturing both active pharmaceutical ingredients (API) and finished drug products. We are in the process of developing our supply chain for each of our product candidates and intend to put in place framework agreements under which CDMOs will generally provide us with necessary quantities of API and drug product on a project-by-project basis based on our development needs. As we advance our product candidates through development, we will consider our lack of redundant supply for the API and drug product for each of our product candidates to protect against any potential supply disruptions. However, we may be unsuccessful in putting in place such framework agreements or protecting against potential supply disruptions.

Third-party manufacturers may not be able to comply with cGMP regulations or similar regulatory requirements outside of the United States. If our CDMOs cannot successfully manufacture material that conforms to our specifications and the strict regulatory requirements of the FDA, EMA or others, they will not be able to secure and/or maintain marketing approval for their manufacturing facilities. In addition, we do not have control over the ability of our CDMOs to maintain adequate quality control, quality assurance and qualified personnel. If the FDA, EMA or a comparable foreign regulatory authority does not approve these facilities for the manufacture of our product candidates or if it withdraws any such approval in the future, we will need to find alternative manufacturing facilities, and those new facilities would need to be inspected and approved by FDA, EMA or comparable regulatory authority prior to commencing manufacturing, which would significantly impact our ability to develop, obtain marketing approval for or market our product candidates, if approved. Our failure, or the failure of our third-party manufacturers, to comply with applicable regulations could result in sanctions being imposed on us, including fines, injunctions, civil penalties, delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of product candidates or drugs, operating restrictions and criminal prosecutions, any of which could significantly and adversely affect supplies of our product candidates or drugs and harm our business and results of operations.

Our current and anticipated future dependence upon others for the manufacture of our product candidates may adversely affect our future profit margins and our ability to commercialize any product candidates that receive marketing approval on a timely and competitive basis.

Our reliance on third parties may require us to share our trade secrets, which increases the possibility that a competitor will discover them or that our trade secrets will be misappropriated or disclosed.

Because we currently rely on third parties in the course of our business, we may share our proprietary technology and confidential information, including trade secrets, with them. We seek to protect our proprietary technology, in part, by entering into confidentiality agreements, and, if applicable, material transfer agreements, collaborative research agreements, consulting agreements or other similar agreements with our collaborators, advisors, employees and consultants prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third parties to use or disclose our confidential information. Despite the contractual provisions employed when working with third parties, the need to share trade secrets and other

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confidential information increases the risk that such trade secrets become known by our competitors, are intentionally or inadvertently incorporated into the technology of others or are disclosed or used in violation of these agreements. Given that our proprietary position is based, in part, on our know-how and trade secrets and despite our efforts to protect our trade secrets, a competitor’s discovery of our proprietary technology and confidential information or other unauthorized use or disclosure would impair our competitive position and may have a material adverse effect on our business, financial condition, results of operations and prospects.

If we engage in future acquisitions or strategic partnerships, this may increase our capital requirements, dilute our stockholders, cause us to incur debt or assume contingent liabilities, and subject us to other risks.

From time to time, we evaluate various acquisition opportunities and strategic partnerships, including licensing or acquiring complementary products, intellectual property rights, technologies or businesses. Any potential acquisition or strategic partnership may entail numerous risks, including:

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In addition, if we undertake acquisitions or pursue partnerships in the future, we may issue dilutive securities, assume or incur debt obligations, incur large one-time expenses and acquire intangible assets that could result in significant future amortization expense.

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If we decide to establish collaborations, but are not able to establish those collaborations on commercially reasonable terms, we may have to alter our development and commercialization plans.

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Our drug development programs and the potential commercialization of our product candidates will require substantial additional cash to fund expenses. We may seek to selectively form collaborations to expand our capabilities, potentially accelerate research and development activities and provide for commercialization activities by third parties. In addition, we intend to explore strategic partnering and collaboration opportunities to out-license rights to our research programs and drug candidates for indications in which we are unlikely to pursue development and commercialization. In parallel, we will also evaluate select external opportunities to strategically expand our portfolio. Any of these relationships may require us to incur non-recurring and other charges, increase our near- and long-term expenditures, issue securities that dilute our existing stockholders, or disrupt our management and business.

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We would face significant competition in seeking appropriate collaborators and the negotiation process is time-consuming and complex. Whether we reach a definitive agreement for a collaboration will depend, among other things, upon our assessment of the collaborator’s resources and expertise, the terms and conditions of the

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proposed collaboration and the proposed collaborator’s evaluation of a number of factors. Those factors may include the design or results of clinical trials, the likelihood of approval by the FDA, EMA or comparable foreign regulatory authorities, the potential market for the subject product candidate, the costs and complexities of manufacturing and delivering such product candidate to patients, the potential of competing drugs, the existence of uncertainty with respect to our ownership of intellectual property and industry and market conditions generally. The potential collaborator may also consider alternative product candidates or technologies for similar indications that may be available to collaborate on and whether such collaboration could be more attractive than the one with us for our product candidate. Further, we may not be successful in our efforts to establish a collaboration or other alternative arrangements for product candidates because they may be deemed to be at too early of a stage of development for collaborative effort and third parties may not view them as having the requisite potential to demonstrate safety and efficacy.

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In addition, there have been a significant number of recent business combinations among large pharmaceutical companies that have resulted in a reduced number of potential future collaborators. Even if we are successful in entering into a collaboration, the terms and conditions of that collaboration may restrict us from entering into future agreements on certain terms with potential collaborators.

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If and when we seek to enter into collaborations, we may not be able to negotiate collaborations on a timely basis, on acceptable terms, or at all. If we are unable to do so, we may have to curtail the development of a product candidate, reduce or delay its development program or one or more of our other development programs, delay its potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to increase our expenditures to fund development or commercialization activities on our own, we may need to obtain additional capital, which may not be available to us on acceptable terms or at all. If we do not have sufficient funds, we may not be able to further develop our product candidates or bring them to market and generate product revenue.

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We may enter into collaborations with third parties for the development and commercialization of product candidates. If those collaborations are not successful, we may not be able to capitalize on the market potential of these product candidates.

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If we enter into any collaboration arrangements with any third parties, we will likely have limited control over the amount and timing of resources that our collaborators dedicate to the development or commercialization of our product candidates. Our ability to generate revenues from these arrangements will depend on our collaborators’ abilities and efforts to successfully perform the functions assigned to them in these arrangements. Collaborations involving our product candidates would pose numerous risks to us, including the following:

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We also collaborate with a network of experts who advise and support our development efforts. In the future, such experts may not collaborate with us which could affect our ability to develop our product candidates and proprietary drug discovery platform as such experts potentially provide us with access to ideas to address the needs of muscle diseases.

Risks Related to the Securities Markets and Ownership of Our Common Stock

An active, liquid and orderly trading market may not continue to be developed or sustained for our common stock and as a result it may be difficult for you to sell your shares of our common stock.

Prior to our initial public offering (IPO), no market for shares of our common stock existed. The trading market for our common stock on The Nasdaq Global Select Market has been limited and an active trading market for our shares may not be sustained. The lack of an active market may also reduce the fair market value of your shares. Furthermore, an inactive market may also impair our ability to raise capital by selling shares of our common stock and may impair our ability to enter into strategic collaborations or acquire companies, technologies or other assets by using our shares of common stock as consideration.

The price of our stock has been and may continue to be volatile, and you could lose all or part of your investment.

The trading price of our common stock has been and may continue to be highly volatile and subject to wide fluctuations in response to various factors, some of which we cannot control. The stock market in general, and

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pharmaceutical and biotechnology companies in particular, have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies.

Broad market and industry factors may negatively affect the market price of our common stock, regardless of our actual operating performance. In addition to the factors discussed in this “Risk Factors” section and elsewhere in this periodic report, these factors include:

The realization of any of the above risks or any of a broad range of other risks, including those described in this “Risk Factors” section, could have a dramatic and adverse impact on the market price of our common stock.

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Our operating results may fluctuate significantly, which makes our future operating results difficult to predict and could cause our operating results to fall below expectations or our guidance.

Our quarterly and annual operating results may fluctuate significantly in the future, which makes it difficult for us to predict our future operating results. From time to time, we may enter into license or collaboration agreements or strategic partnerships with other companies that include development funding and significant upfront and milestone payments and/or royalties, which may become an important source of our revenue. These upfront and milestone payments may vary significantly from period to period and any such variance could cause a significant fluctuation in our operating results from one period to the next.

In addition, we measure compensation cost for stock-based awards made to employees at the grant date of the award, based on the fair value of the award as determined by our board of directors, and recognize the cost as an expense over the employee’s requisite service period. As the variables that we use as a basis for valuing these awards change over time, including, our underlying stock price and stock price volatility, the magnitude of the expense that we must recognize may vary significantly.

Furthermore, our operating results may fluctuate due to a variety of other factors, many of which are outside of our control and may be difficult to predict, including the following:

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The cumulative effect of these factors could result in large fluctuations and unpredictability in our quarterly and annual operating results. As a result, comparing our operating results on a period-to-period basis may not be meaningful. Investors should not rely on our past results as an indication of our future performance. This variability and unpredictability could also result in our failing to meet the expectations of industry or financial analysts or investors for any period. If our revenue or operating results fall below the expectations of analysts or investors or below any forecasts we may provide to the market, or if the forecasts we provide to the market are below the expectations of analysts or investors, the price of our common stock could decline substantially. Such a stock price decline could occur even when we have met any previously publicly stated guidance we may provide.

Our principal stockholders and management own a significant percentage of our stock and will be able to exert significant control over matters subject to stockholder approval.

As of December 31, 2021, our executive officers, directors, holders of 5% or more of our capital stock and their respective affiliates beneficially owned approximately 67.5 % of our outstanding common stock. These stockholders, acting together, may be able to control matters requiring stockholder approval. For example, they may be able to control elections of directors, amendments of our organizational documents or approval of any merger, sale of assets or other major corporate transactions. This concentration of ownership control may delay, discourage or prevent a change of control, including unsolicited acquisition proposals or offers for our common stock that you may feel are in your best interest as one of our stockholders, entrench our management and board of directors or delay or prevent a merger, consolidation, takeover or other business combination involving us that other stockholders may desire. The interests of this group of stockholders may not always coincide with your interests or the interests of other stockholders and they may act in a manner that advances their best interests and not necessarily those of other stockholders, including seeking a premium value for their common stock, and might affect the prevailing market price for our common stock.

Sales of a substantial number of shares of our common stock in the public market could cause our stock price to fall.

Sales of a substantial number of shares of our common stock in the public market could occur at any time. These sales, or the perception in the market that the holders of a large number of shares intend to sell shares, could reduce the market price of our common stock.

Moreover, certain holders of an aggregate of our common stock have rights, subject to certain conditions, to require us to file registration statements covering their shares or to include their shares in registration statements that we may file for ourselves or other stockholders. Registration of these shares, under the Securities Act of 1933, as amended (Securities Act), would result in the shares becoming freely tradable in the public market, subject to the restrictions of Rule 144 in the case of our affiliates. If any of these additional shares are sold, or if it is perceived that they will be sold, in the public market, the market price of our common stock could decline.

We are an “emerging growth company” and a “smaller reporting company” and we cannot be certain if the reduced reporting requirements applicable to emerging growth companies and smaller reporting companies will make our common stock less attractive to investors.

We are an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012 (JOBS Act). For as long as we continue to be an emerging growth company, we intend to take advantage of exemptions

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from various reporting requirements that are applicable to other public companies that are not emerging growth companies, including:

Under the JOBS Act, emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards apply to private companies. We have elected to avail ourselves of this exemption from new or revised accounting standards and, therefore, will not be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies. As a result, our financial statements may not be comparable to companies that comply with the new or revised accounting pronouncements as of public company effective dates.

We will remain an emerging growth company until the earliest to occur of: (1) the last day of the fiscal year in which we have more than $1.07 billion in annual revenue; (2) the date we qualify as a “large accelerated filer,” with at least $700.0 million of equity securities held by non-affiliates; (3) the date on which we have issued more than $1.0 billion in non-convertible debt securities during the prior three-year period; and (4) the last day of the fiscal year ending after the fifth anniversary of our IPO.

Even after we no longer qualify as an emerging growth company, we may still qualify as a “smaller reporting company,” as defined in the Securities Exchange Act of 1934, as amended (Exchange Act), which would allow us to continue to take advantage of many of the same exemptions from disclosure requirements, including not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act and reduced disclosure obligations regarding executive compensation our periodic reports and proxy statements.

We cannot predict if investors will find our common stock less attractive because we may rely on these exemptions. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our stock price may be more volatile.

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If securities or industry analysts do not publish research or reports, or if they publish adverse or misleading research or reports, regarding us, our business or our market, our stock price and trading volume could decline.

The trading market for our common stock is influenced by the research and reports that securities or industry analysts publish about us, our business or our market. We currently have research coverage from a limited number of securities or industry analysts. If no or few new securities or industry analysts commence coverage of us, the stock price may be negatively impacted. If any of the analysts who cover us issue adverse or misleading research or reports regarding us, our business model, our intellectual property, our stock performance or our market, or if our operating results fail to meet the expectations of analysts, our stock price would likely decline. If one or more

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of these analysts cease coverage of us or fail to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock price or trading volume to decline.

We incur significantly increased costs and devote substantial management time as a result of operating as a public company. Additionally, if we fail to maintain proper and effective internal controls, our ability to produce accurate financial statements on a timely basis could be impaired.

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As a public company, we incur significant legal, accounting and other expenses that we did not incur as a private company, and these expenses may increase even more after we are no longer an “emerging growth company.” We are subject to the reporting requirements of the Exchange Act, the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Protection Act, as well as rules adopted, and to be adopted, by the SEC and the Nasdaq Stock Market LLC (Nasdaq). Our management and other personnel devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations have substantially increased our legal and financial compliance costs and makes some activities more time-consuming and costly, which has increased our operating expenses. For example, these rules and regulations make it more difficult and more expensive for us to obtain director and officer liability insurance and we have been required to incur substantial costs to maintain sufficient coverage, particularly in light of recent cost increases related to coverage. We cannot accurately predict or estimate the amount or timing of additional costs we may incur to respond to these requirements. The impact of these requirements could also make it more difficult for us to attract and retain qualified persons to serve on our board of directors, our board committees or as executive officers.

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In addition, as a public company, we are required to incur additional costs and obligations in order to comply with SEC rules that implement Section 404 of the Sarbanes-Oxley Act. Under these rules, beginning with our second annual report on Form 10-K after we become a public company, we will be required to make a formal assessment of the effectiveness of our internal control over financial reporting, and once we cease to be an emerging growth company, we will be required to include an attestation report on internal control over financial reporting issued by our independent registered public accounting firm. To achieve compliance with Section 404 within the prescribed period, we will be engaging in a process to document and evaluate our internal control over financial reporting, which is both costly and challenging. In this regard, we will need to continue to dedicate internal resources, potentially engage outside consultants and adopt a detailed work plan to assess and document the adequacy of our internal control over financial reporting, continue steps to improve control processes as appropriate, validate through testing that controls are designed and operating effectively, and implement a continuous reporting and improvement process for internal control over financial reporting.

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The rules governing the standards that must be met for management to assess our internal control over financial reporting are complex and require significant documentation, testing and possible remediation to meet the detailed standards under the rules. During the course of its testing, our management may identify material weaknesses or deficiencies which may not be remedied in time to meet the deadline imposed by the Sarbanes-Oxley Act.

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Our internal control over financial reporting will not prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud will be detected.

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If we are not able to comply with the requirements of Section 404 of the Sarbanes-Oxley Act in a timely manner, or if we are unable to maintain proper and effective internal controls, we may not be able to produce timely and accurate financial statements. If that were to happen, the market price of our stock could decline and we could be subject to sanctions or investigations by the stock exchange on which our common stock is listed, the SEC or other regulatory authorities.

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Our disclosure controls and procedures may not prevent or detect all errors or acts of fraud.

We are subject to the periodic reporting requirements of the Exchange Act. We designed our disclosure controls and procedures to reasonably assure that information we must disclose in reports we file or submit under the Exchange Act is accumulated and communicated to management, and recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. We believe that any disclosure controls and procedures or internal controls and procedures, no matter how well-conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met.

These inherent limitations include the facts that judgments in decision-making can be faulty and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people or by an unauthorized override of the controls. Accordingly, because of the inherent limitations in our control system, misstatements due to error or fraud may occur and not be detected.

We may be subject to securities litigation, which is expensive and could divert management attention.

The market price of our common stock may be volatile and, in the past, companies that have experienced volatility in the market price of their stock have been subject to securities class action litigation. This risk is especially relevant for us because biotechnology companies have experienced significant stock price volatility in recent years and we may be the target of this type of litigation in the future. Securities litigation against us could result in substantial costs and divert our management’s attention from other business concerns, which could seriously harm our business.

We do not intend to pay dividends on our common stock in the foreseeable future, so any returns will be limited to the value of our common stock.

We have never declared or paid any cash dividends on our common stock. We currently anticipate that we will retain future earnings for the development, operation and expansion of our business and do not anticipate declaring or paying any cash dividends for the foreseeable future. Any return to stockholders will therefore be limited to any appreciation in the value of their stock.

Provisions in our amended and restated certificate of incorporation and amended and restated bylaws and Delaware law might discourage, delay or prevent a change in control of our company or changes in our management and, therefore, depress the market price of our common stock.

Our amended and restated certificate of incorporation and amended and restated bylaws contains provisions that could depress the market price of our common stock by acting to discourage, delay or prevent a change in control of our company or changes in our management that the stockholders of our company may deem advantageous. In addition, because our board of directors is responsible for appointing the members of our management team, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current management by making it more difficult for stockholders to replace members of our board of directors. These provisions, among other things:

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In addition, Section 203 of the General Corporation Law of the State of Delaware (DGCL), prohibits a publicly-held Delaware corporation from engaging in a business combination with an interested stockholder, generally a person which together with its affiliates owns, or within the last three years has owned, 15% of our voting stock, for a period of three years after the date of the transaction in which the person became an interested stockholder, unless the business combination is approved in a prescribed manner.

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Any provision of our amended and restated certificate of incorporation, amended and restated bylaws or Delaware law that has the effect of delaying or preventing a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our capital stock and could also affect the price that some investors are willing to pay for our common stock.

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Our amended and restated bylaws provide that the Court of Chancery of the State of Delaware and the federal district courts of the United States of America are the exclusive forums for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

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Our amended and restated bylaws provide that the Court of Chancery of the State of Delaware (or, if the Court of Chancery does not have jurisdiction, another State court in Delaware or the federal district court for the District of Delaware) is the exclusive forum for the following (except for any claim as to which such court determines that there is an indispensable party not subject to the jurisdiction of such court (and the indispensable party does not consent to the personal jurisdiction of such court within 10 days following such determination), which is vested in the exclusive jurisdiction of a court or forum other than such court or for which such court does not have subject matter jurisdiction):

This provision would not apply to suits brought to enforce a duty or liability created by the Exchange Act or any other claim for which the U.S. federal courts have exclusive jurisdiction.

Our amended and restated bylaws further provide that the federal district courts of the United States of America will be the exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act.

These exclusive-forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage lawsuits against us and our directors, officers and other employees. Any person or entity purchasing or otherwise acquiring any interest in any of our securities shall be deemed to have notice of and consented to these provisions. There is uncertainty as to whether a court would enforce such provisions, and the enforceability of similar choice of forum

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provisions in other companies’ charter documents has been challenged in legal proceedings. It is possible that a court could find these types of provisions to be inapplicable or unenforceable, and if a court were to find either exclusive-forum provision in our amended and restated bylaws to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving the dispute in other jurisdictions, which could seriously harm our business.

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Item 1B. Unresolved Staff Comments

None.

Item 2. Properties

Our headquarters are based within the BioFrontiers Institute, a pioneering interdisciplinary hub within the University of Colorado, Boulder. We have leased approximately 2,700 square feet of space under a lease that expires in August 2022. Our facilities take maximal advantage of our location designed to house both academic and industrial research enabling us to build a state-of-the-art muscle research facility. In January 2022, the Company entered into a lease agreement for approximately 18,614 square feet of office and laboratory space in Boulder, Colorado. The new lease commences on or around September 1, 2022 and includes escalating rent payments and a seven-year term. The future minimum lease payments are disclosed in Note 10 to our financial statements appearing in our Annual Report. We believe our facilities are adequate and suitable for our current needs and, should it be needed, suitable additional or alternative space will be available to accommodate our operations.

Item 3. Legal Proceedings

From time to time, we may be involved in various claims and legal proceedings relating to claims arising out of our operations. We are not currently a party to any material legal proceedings. The outcome of litigation cannot be predicted with certainty and some lawsuits, claims or proceedings may be disposed of unfavorably to us, which could materially affect our financial condition or results of operations.

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Item 4. Mine Safety Disclosures

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information for Our Common Stock

Our common stock has been publicly traded on the Nasdaq Global Select Market under the symbol “EWTX.” since March 26, 2021. Prior to that date, there was no public trading market for our common stock.

Dividend Policy

We have not declared or paid any cash dividends on our capital stock since our inception. We intend to retain future earnings, if any, to finance the operation and expansion of our business and do not anticipate paying any cash dividends in the foreseeable future. Payment of future cash dividends, if any, will be at the discretion of our board of directors after taking into account various factors, including our financial condition, operating results, current and anticipated cash needs, the requirements and contractual restrictions of then-existing debt instruments, and other factors that our board of directors deems relevant.

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Holders of Record

As of December 31, 2021, there were approximately 46 stockholders of record of our common stock. The actual number of stockholders is greater than this number of record holders and includes stockholders who are beneficial owners but whose shares are held in street name by brokers and other nominees.

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Unregistered Sales of Equity Securities

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None.

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Use of Proceeds from Public Offering of Common Stock

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On March 25, 2021, our registration statement on Form S-1 was declared effective by the SEC for our initial public offering of common stock. We began trading on the Nasdaq Global Select Market on March 26, 2021 and the IPO formally closed on March 30, 2021. In connection with our IPO, we issued and sold an aggregate of 12,650,000 shares of our common stock at a price of $16.00 per share, including 1,650,000 shares of our common stock issued and sold in connection with the full exercise by the underwriters of their option to purchase additional shares of common stock. The gross proceeds from the offering for shares sold in our IPO was $202.4 million. The joint book-running managers for the initial public offering were J.P. Morgan Securities LLC, Goldman Sachs & Co. LLC and SVB Leerink LLC. After deducting underwriting discounts and commissions and offering costs paid or payable by us of approximately $16.3 million, the net proceeds from the offering were approximately $186.1 million. No payments were made by us to directors, officers or persons owning ten percent or more of our common stock or to their associates, or to our affiliates, other than payments in the ordinary course of business to officers for salaries and to non-employee directors pursuant to our director compensation policy. There has been no material change in the planned use of proceeds from our IPO as described in our final prospectus filed with the SEC on March 26, 2021 pursuant to Rule 424(b)(4). We invested the funds received in marketable securities as described in more detail in Note 2 to our financial statements appearing in this Annual Report until such time the funds are required for use in operations.

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Item 6. [Reserved]

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion of the financial condition and results of operations of Edgewise Therapeutics, Inc. should be read in conjunction with the financial statements and the related notes thereto included elsewhere in this Annual Report on Form 10-K. In addition to historical information, this discussion and analysis contains forward-looking statements that involve risks, uncertainties and assumptions. As a result of many factors, including those factors set forth in the “Risk Factors” section of this Annual Report on Form 10-K, our actual results could differ materially from the results described in or implied by these forward-looking statements. You should carefully read the “Risk Factors” to gain an understanding of the factors that could cause actual results to differ materially from our forward-looking statements. Please also see the section titled “Special Note Regarding Forward-Looking Statements.”

Overview

We are a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of innovative treatments for severe, rare muscle disorders for which there is significant unmet medical need. Guided by our holistic drug discovery approach to targeting the muscle as an organ, we have combined our foundational expertise in muscle biology and small molecule engineering to build our proprietary, muscle focused drug discovery platform. Our platform utilizes custom-built high throughput and translatable systems that measure integrated muscle function in whole organ extracts to identify small molecule precision medicines regulating key proteins in muscle tissue, initially focused on addressing rare neuromuscular and cardiac diseases. Our lead candidate, EDG-5506, is an orally administered

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allosteric, selective, fast myofiber (type II) myosin small molecule inhibitor designed to address the root cause of dystrophinopathies including Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD), and recently completed a Phase 1 clinical trial. We have developed and characterized a library of selective fast skeletal myosin inhibitors exhibiting a broad range of pharmacological and pharmacokinetic (PK) properties. We also intend to advance two other muscle-focused precision medicines into clinical development. Our second program, EDG-5440, is a next generation myosin ATPase modulator designed to target skeletal muscle in a specific set of rare neuromuscular diseases. Our third program, EDG-002, focuses on identification of novel mechanism cardiac modulators. We are initially pursuing a new target for inherited hypertrophic cardiomyopathy (HCM) in addition to exploring the potential of this novel mechanism across other cardiac disorders. We believe our programs also offer substantial opportunities for us to expand into related rare diseases for which there are limited or no approved treatments.

In October 2021, we announced positive topline results from the MAD portion of a first-in-human Phase 1, HV clinical trial. In addition, in January 2022, we announced positive topline results from the BMD, or Phase 1b, portion of a first-in-human Phase 1 clinical trial assessing the safety, tolerability, PK and PD of EDG-5506. We are currently enrolling a follow-on open-label, single-center study that will assess the safety and PK of EDG-5506 over one year in adults with BMD. We anticipate initiation of Phase 2 trials in individuals with BMD in the first half of 2022 and DMD in the second half of 2022.

Since our inception in 2017, we have devoted substantially all of our focus and financial resources to discovering, identifying and developing potential product candidates, including advancing our development programs, conducting preclinical studies of our product candidates and initiating a clinical trial, organizing and staffing our company, business planning, raising capital and securing related intellectual property rights. To date, we have not completed the development of any of our product candidates, have not generated any revenue and have never been profitable. Our ability to achieve profitability, if ever, will depend heavily on the successful development and eventual commercialization of one or more of our product candidates. We will need substantial additional funding to support our continuing operations and pursue our development and commercialization strategy. Until such time that we can generate significant revenue from product sales, if ever, we expect to finance our operations through the sale of equity, debt financings or other capital sources, including income from collaborations, strategic partnerships or marketing, distribution or licensing arrangements with third parties or from grants from organizations and foundations. We may be unable to raise additional funds or to enter into such other agreements or arrangements when needed on favorable terms, or at all. If we fail to raise capital or enter into such agreements as, and when, needed, we may have to significantly delay, scale back or discontinue the development and commercialization of one or more of our product candidates or delay or terminate our efforts to expand our product pipeline.

We have incurred significant losses since the commencement of our operations. Our net losses were $42.8 million and $17.1 million for the years ended December 31, 2021 and 2020, respectively, and we expect to continue to incur significant losses for the foreseeable future as we advance our product candidates through preclinical development and clinical trials and seek regulatory approval of our product candidates. Our net losses may fluctuate significantly from period to period, depending on the timing of and expenditures on our planned research and development activities.

As of December 31, 2021, we had an accumulated deficit of $77.0 million. To date, we have financed our operations primarily through private placements of convertible preferred stock and an initial public offering (IPO) of our common stock. From inception through December 31, 2021, these private placements have provided gross proceeds of $160.7 million and the IPO generated net proceeds of $186.1 million after deducting underwriting discounts and commissions and offering costs of $16.3 million. We believe that our existing cash and cash equivalents and marketable securities of $280.8 million will enable us to fund our planned operating expenses and capital expenditure requirements through at least the next 12 months.

In March 2020, the World Health Organization declared the novel coronavirus disease (COVID-19) outbreak a global pandemic. To limit the spread of COVID-19, governments have taken various actions including the issuance of stay-at-home orders and physical distancing guidelines. Accordingly, businesses have adjusted, reduced or suspended operating activities. Disruptions caused by the COVID-19 pandemic, including the effects of the stay-at-home orders and work-from-home policies, have impacted productivity, have resulted in increased operational expenses, certain adjustments to the operations of our clinical trial, delays in the enrollment of new patients at our clinical trial site, and

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delays in certain supply chain activities and collecting and analyzing data from patients in our clinical trial, and may further disrupt our business and delay our development programs and regulatory timelines, the magnitude of which will depend, in part, on the length and severity of the restrictions and other limitations on our ability to conduct business in the ordinary course as well as the spread, severity and potential resurgence of COVID-19, the impact of new COVID-19 variants, and vaccination deployment efforts. As a result, research and development expenses and general and administrative expenses may vary significantly if there is an increased impact from COVID-19 on the costs and timing associated with the conduct of our clinical trial and other related business activities.

Components of Our Results of Operations

Operating expenses

Research and development expenses

Research and development expenses consist primarily of costs incurred in connection with the discovery and development of our product candidates. We record research and development expenses when these are incurred. Such expenses include:

The majority of these expenses have been incurred to advance our lead product candidate, EDG-5506. We expect that significant additional spending will be required to progress EDG-5506 through the remainder of the clinical development phases. These expenses will primarily consist of expenses for the administration of clinical trials as well as manufacturing costs for clinical material supply.

We track our direct research and development expenses on a program-by-program basis once a lead compound has been selected and clinical trials have been initiated. These direct costs consist primarily of external costs such as fees paid to outside consultants, CROs, CDMOs, clinical trial sites and central laboratories in connection with our discovery and preclinical activities, process development, manufacturing and clinical development activities. These expenses are recognized based on an evaluation of the progress to completion of specific tasks using information provided to us by our service providers or our estimate of the level of service that has been performed at each reporting date. Our direct research and development expenses by program also include costs of laboratory supplies that can be directly attributed to

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a specific program as well as any fees incurred under license agreements. We do not allocate employee-related costs, including stock-based compensation, or facility expenses, including rent, depreciation or other indirect costs, to specific programs because these costs are deployed across multiple programs and, as such, are not separately classified. We use internal resources primarily to conduct our research and discovery activities and to manage our preclinical development, manufacturing and clinical development activities.

Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages, primarily due to the increased size and duration of later-stage clinical trials. As a result, we expect that our research and development expenses will increase substantially over the next several years as we advance EDG-5506 through clinical trials and additional product candidates enter clinical trials; continue to develop our proprietary drug discovery platform; continue to discover and develop additional product candidates; and hire additional personnel.

The successful development of our product candidates is highly uncertain, and we do not believe it is possible at this time to accurately project the nature, timing and extent of expenses necessary to complete the development of our product candidates. We are also unable to predict when, if ever, we will generate revenue from our product candidates to offset these expenses. Our expenditures on current and future preclinical and clinical development programs are subject to numerous uncertainties in timing and cost to completion. The duration, costs and timing of preclinical studies and clinical trials and development of our product candidates will depend on a variety of factors, including:

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Any changes in the outcome of any of these factors could significantly impact the costs and timing

associated with the development of our product candidates.

General and administrative expenses

General and administrative expenses consist primarily of salaries, related benefits and stock-based compensation expense for personnel in executive, finance, accounting, legal and administrative functions. General and administrative expenses also include facilities and other expenses, which include direct or allocated expenses for rent and maintenance of facilities and insurance, not otherwise included in research and development expenses, as well as professional fees for legal, patent, consulting, investor and public relations, accounting and audit services.

We anticipate that our general and administrative expenses will increase in the future as we increase our headcount to support the continued research and development of our programs.

Interest income

Interest income primarily consists of interest income generated from our cash, cash equivalents and marketable securities.

Results of Operations

Comparison of the years ended December 31, 2021 and 2020

The following table summarizes our results of operations for the years ended December 31, 2021 and 2020:

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Research and development expenses

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The following table summarizes our research and development expenses:

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Research and development expenses were $32.2 million for the year ended December 31, 2021 compared to $15.0 million for the year ended December 31, 2020. The increase of $17.2 million was primarily driven by $6.1 million of higher external research and development expenses related to our Phase 1 clinical trial of EDG-5506, an increase of $4.8 million related to increased costs in outsourced chemistry, drug metabolism and efficacy studies for drug discovery and

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preclinical development of our other programs and an increase of $6.4 million in internal costs, including personnel related. Internal costs increased by $6.1 million in personnel-related costs, due largely to an increased employee headcount and stock-based compensation to support the growth of our research and development programs and $0.3 million in lab supply costs and depreciation expense.

General and administrative expenses

General and administrative expenses were $11.0 million for the year ended December 31, 2021 compared to $2.2 million for the year ended December 31, 2020. The increase of $8.8 million was primarily related to the cost of operating as a public company, including $3.9 million in increased personnel-related costs from increased headcount and stock-based compensation, $2.2 million in increased directors and officers insurance and $2.7 million in increased professional and consulting costs and other administrative costs.

Interest income

Interest income was $0.4 million and $0.1 million for the years ended December 31, 2021 and 2020, respectively. The increase of $0.3 million was the result of higher cash and marketable securities balances from the proceeds of our IPO in 2021 as compared to our cash balances in 2020, resulting in higher interest income earned.

Liquidity and Capital Resources

Sources of liquidity

Since our inception, we have not generated any revenue and have incurred significant operating losses and negative cash flows from our operations. We have funded our operations to date primarily with proceeds from the sale of convertible preferred stock and the initial public offering of our common stock. Through December 31, 2021, we had received gross proceeds of $160.7 million from the sale of convertible preferred stock and $186.1 million in net proceeds from the initial public offering of our common stock after deducting underwriting discounts, commissions and offering costs of $16.3 million. As of December 31, 2021, we had cash, cash equivalents and marketable securities in the amount of $280.8 million.

Cash flows

The following table summarizes our sources and uses of cash for each of the periods presented:

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