Inari Medical, Inc. - Annual Report: 2020 (Form 10-K)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

For the fiscal year ended December 31, 2020

OR

Commission File Number 001-39293

Inari Medical, Inc.

(Exact name of Registrant as specified in its Charter)

Registrant’s telephone number, including area code: (877) 923-4747

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

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 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, 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.

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 the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the shares of common stock on The NASDAQ Stock Market on June 30, 2020, the last business day of the Registrant’s most recently completed second fiscal quarter was approximately $953.6 million.

The number of shares of Registrant’s Common Stock outstanding as of March 1, 2021 was 49,500,688.

DOCUMENTS INCORPORATED BY REFERENCE

The Registrant intends to file a definitive proxy statement pursuant to Regulation 14A withing 120 days of the end of the fiscal year ended December 31, 2020. Portions of such definitive proxy statement are incorporated by reference into Part III of this Annual Report on Form 10-K.

Table of Contents

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Forward-Looking Statements

This Annual Report on Form 10-K contains forward-looking statements. We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. All statements other than statements of historical facts contained in this Annual Report on Form 10-K may be forward-looking statements. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “could,” “intends,” “targets,” “projects,” “contemplates,” “believes,” “estimates,” “forecasts,” “predicts,” “potential” or “continue” or the negative of these terms or other similar expressions. Forward-looking statements contained in this Annual Report on Form 10-K include, but are not limited to statements regarding our future results of operations and financial position, industry and business trends, stock compensation, business strategy, plans, market growth, regulatory climate, competitive landscape and our objectives for future operations.

The forward-looking statements in this Annual Report on Form 10-K are only predictions. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our business, financial condition and results of operations. Forward-looking statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including, but not limited to, the important factors discussed in Part I, Item 1A. “Risk Factors” in this Annual Report on Form 10-K for the year ended December 31, 2020. The forward-looking statements in this Annual Report on Form 10-K are based upon information available to us as of the date of this Annual Report on Form 10-K, 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 investors are cautioned not to unduly rely upon these statements.  

You should read this Annual Report on Form 10-K and the documents that we reference in this Annual Report on Form 10-K and have filed as exhibits to this Annual Report on Form 10-K with the understanding that our actual future results, levels of activity, performance and achievements may be materially different from what we expect. We qualify all of our forward-looking statements by these cautionary statements. These forward-looking statements speak only as of the date of this Annual Report on Form 10-K. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained in this Annual Report on Form 10-K, whether as a result of any new information, future events or otherwise.

Summary Risk Factors

Our business is subject to numerous risks and uncertainties, including those described in Part I, Item 1A. “Risk Factors” in this Annual Report on Form 10-K. You should carefully consider these risks and uncertainties when investing in our common stock. The principal risks and uncertainties affecting our business include, but are not limited to, the following:

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PART I

Item 1. Business.

Overview

We are a commercial-stage medical device company focused on developing products to treat and transform the lives of patients suffering from venous diseases. Our initial product offering consists of two minimally-invasive, novel catheter-based mechanical thrombectomy devices. We purpose-built our products for the specific characteristics of the venous system and the treatment of the two distinct manifestations of venous thromboembolism, or VTE – deep vein thrombosis and pulmonary embolism. Our ClotTriever product is FDA-cleared for the removal of clot from peripheral blood vessels and is used to treat patients suffering from deep vein thrombosis, or DVT. Our FlowTriever product is the first thrombectomy system FDA-cleared for the treatment of pulmonary embolism, or PE. These products have been used to treat more than 20,000 patients at over 800 hospitals across the United States. We have experienced significant growth since we began commercializing our products, with approximately 13,200 procedures performed using our products in 2020.

VTE is a disease caused by blood clot formation in the veins of the body and is a leading cause of death and disability worldwide. VTE represents the third most common vascular diagnosis in the United States after myocardial infarction and stroke. Researchers estimate that approximately one million people present with VTE in the United States each year, with approximately 668,000 new patients diagnosed with DVT and approximately 400,000 new patients diagnosed with PE each year. VTE results in approximately 296,000 deaths in the United States each year and industry sources estimate that VTE-related direct health care costs exceed $10 billion per year.

Of the estimated 668,000 new DVT diagnoses and 400,000 new PE diagnoses in the United States each year, we believe approximately 242,000 DVT patients and approximately 200,000 PE patients could benefit from safe and effective treatment with our ClotTriever and FlowTriever products, respectively. In addition, among the 668,000 DVT patients, we believe there are approximately 20,000 patients with clot in transit in the right atrium who could benefit from treatment with FlowTriever products.  Taken together, this represents a potential annual addressable U.S. market opportunity for our current products of approximately $3.8 billion. We also believe there is a substantial market opportunity outside the United States.

The current standard of care for treating VTE is conservative medical management with anticoagulants, which are drugs designed to prevent further blood clotting but that do not break down or eliminate existing clots. Anticoagulants are intended to stop further clot formation while the body attempts to break down and remove clots using natural mechanisms. Nearly all patients receive this treatment, many of whom remain on anticoagulants for the remainder of their lives. We estimate that 68% of our target DVT patients and 90% of our target PE patients are treated with anticoagulants alone. We estimate that the remaining 32% of our target DVT patients and 10% of our target PE patients also receive additional treatment using mechanical thrombectomy or thrombolytic drug therapy.

Historically, development efforts for mechanical thrombectomy devices have focused on arterial devices, which are then repurposed for use in the venous system. Given the significant differences between the arterial and venous systems and the clot that forms in each system, these devices have difficulty removing venous clot, which is often adhered to the vessel wall and is older, firmer and substantially larger than arterial clot.

Thrombolytic drugs accelerate the body’s natural mechanisms for breaking down clot but are generally not effective on venous clot. These drugs also are associated with a risk of spontaneous major bleeding, including catastrophic bleeding in the brain. In addition, these drugs are expensive and require monitoring in a critical care setting, such as the intensive care unit, or ICU.

We believe the best way to treat VTE and improve the quality of life of patients suffering from this disease is to safely and effectively remove the blood clot. With that in mind, we designed and purpose-built our ClotTriever and FlowTriever products. The ClotTriever is a mechanical thrombectomy system designed to core, capture and remove large clots from large vessels and is used to treat DVT. The FlowTriever is a large bore catheter-based aspiration and mechanical thrombectomy system designed to remove large clots from large vessels to treat PE. Both products are designed to eliminate the need for thrombolytic drugs.

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We believe our products are transformational because they offer hospitals, physicians and patients the following key benefits:

We believe the historical bias for conservative medical management is largely due to the ineffectiveness of, and risks associated with, current alternative treatments, and the lack of mechanical tools capable of removing venous clot in a safe, effective and simple way. The standard of care for treatment of other thrombotic diseases, such as myocardial infarction and stroke, has evolved from the use of anticoagulants alone to anticoagulants together with thrombolytic drugs and eventually to anticoagulants together with definitive catheter-based interventions. We believe our products could be the catalyst to drive the same evolution of treatment for venous diseases, establishing our products as the standard of care for DVT and PE.

Our ClotTriever and FlowTriever have received 510(k) clearance from the FDA. The primary clinical study we have completed to date regarding the safety and effectiveness of our products is our FlowTriever Pulmonary Embolectomy Clinical Study, or FLARE study, which was completed in October 2017. The FLARE study supported FDA 510(k) clearance of the FlowTriever for the treatment of PE, which was received in May 2018. We are committed to continuing to develop a strong base of clinical evidence and real-world patient outcomes to further support the safety and effectiveness of our products. We are currently enrolling two 500-patient registries: ClotTriever Outcomes, or CLOUT, for DVT and FlowTriever All-Comer Registry for Patient Safety and Hemodynamics, or FLASH, for PE. In addition, we are initiating the FlowTriever for Acute Massive Pulmonary Embolism, or FLAME, registry for high-risk PE in 2021 and there are multiple ongoing investigator-initiated studies. We believe these efforts will generate a robust cadence of publications, drive adoption of our products, increase awareness of venous diseases and inform the design of future definitive clinical trials.

We believe our venous-focused commercial organization provides a significant competitive advantage. Our most important relationships are between our sales representatives and our treating physicians, which include interventional cardiologists, interventional radiologists and vascular surgeons. We have developed systems and processes to harness the information gained from these relationships and we leverage this information to rapidly iterate products, introduce and execute physician education and training programs and scale our sales organization. We market and sell our products to hospitals, which are reimbursed by various third-party payors.

We have dedicated meaningful resources to building a direct sales force in the United States, with our sales force covering 120 territories as of December 31, 2020.  We continue to actively expand our sales organization through additional sales representatives and territories.

We have experienced significant growth since we began commercializing our products in the United States. We generated revenue of $139.7 million, with a gross margin of 90.6% and net income of $13.8 million for the year ended December 31, 2020, compared to revenue of $51.1 million, with a gross margin of 88.4% and net losses of $1.2 million for the year ended December 31, 2019. Our accumulated deficit was $27.4 million as of December 31, 2020.

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Our Success Factors

We believe the continued growth of our company will be driven by the following success factors:

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Our Growth Strategy

Our mission is to treat and transform the lives of patients suffering from venous diseases. To accomplish this, we intend to establish our products as the standard of care for the treatment of venous diseases. The key elements of our growth strategy are:

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Market Overview

Our Market

Industry sources estimate that approximately 668,000 patients in the United States are diagnosed with DVT each year. Of these, approximately 242,000 patients, or 38%, have DVT located in the iliofemoral region and are candidates for treatment using our ClotTriever product. We believe the ClotTriever offers an innovative solution for these 242,000 patients that is safe and more effective than current treatment alternatives, and that this represents an approximately $1.6 billion per year U.S. market opportunity for DVT. In addition, among the 668,000 DVT patients, we believe there are approximately 20,000 patients with clot in transit in the right atrium who could benefit from treatment with FlowTriever products.

Industry sources estimate that approximately 400,000 patients in the United States are diagnosed with PE each year. Of these, approximately 200,000 patients, or 50%, have PE that is severe enough to cause right heart strain. We believe the FlowTriever offers an innovative solution for these 200,000 patients that is safe and more effective than current treatment alternatives, and that this represents an approximately $2.0 billion per year U.S. market opportunity for PE.

Collectively, the potential annual addressable U.S. market for our current products is approximately $3.8 billion. We also believe there is a substantial market opportunity for DVT and PE outside the United States.

Venous and Arterial Systems and Clot Morphology

The vascular system is made up of vessels that carry and circulate blood throughout the body. The system consists of the arterial system, a network of vessels that carry oxygenated blood away from the heart to the body, and the venous system, a network of vessels that return blood from the body back to the heart. The arterial system is characterized by high velocity blood flow under high pressure. As blood moves through arteries to the body, arteries gradually taper in the direction of blood flow and branch off into smaller vessels, terminating in capillaries. Venous blood flow travels at a lower velocity and under lower pressure than arterial blood flow. Veins carry blood back to the heart and, as a result, enlarge in the direction of blood flow. Due to these important differences, the clinical presentation and clot morphology of venous diseases differ significantly from arterial diseases. As a result, VTE presents a specific set of challenges and corresponding requirements for effective treatment solutions.

Due to the characteristics of the arterial system, clot that forms in arteries quickly becomes occlusive, which causes sudden and dramatic symptoms that require the patient to quickly seek medical attention. Examples of conditions caused by arterial clot include myocardial infarction, or MI, and stroke. As these clots are discovered quickly and in smaller vessels, they are small, soft, fibrin-rich and are usually not adhered to the wall of the artery. For example, arterial clot that causes MI or stroke is generally about the size of a grain of rice.

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Due to the characteristics of the venous system, the volume of venous clot gradually increases and adheres to the vessel wall, growing inwards towards the center of the vessel (thicker) and along the vessel wall (longer), further restricting blood flow through the affected vein. Venous clot can develop over days or weeks before causing symptoms severe enough to prompt the patient to seek medical attention. During this time, as venous clot ages, its fibrin composition is rapidly replaced by a firmer collagen matrix. For example, according to a published study, the collagen content of a clot can reach 20% within one week and 80% within three weeks. The body’s natural mechanisms for breaking down and removing clot targets fibrin. Therefore, as a clot ages it generally becomes more resistant to the body’s natural ability to break down and eliminate it. As a result, by the time patients seek medical attention, their venous clot has likely become resistant to the natural mechanisms for treatment and quite significant in size.

The following images depict examples of arterial and venous clots:

Venous Thromboembolism

Venous thromboembolism, or VTE, is a disease caused by blood clot formation in the venous system. VTE has two distinct manifestations – deep vein thrombosis, or DVT, and pulmonary embolism, or PE. VTE is a leading cause of death and disability worldwide and represents the third most common vascular diagnosis in the United States after myocardial infarction and stroke. According to industry sources, PE is the third leading cause of cardiovascular death in the United States and is the most common cause of preventable deaths in hospitals in the United States. Researchers estimate that there are up to approximately one million VTE patients in the United States each year. VTE results in approximately 296,000 deaths in the United States each year and industry sources estimate that VTE-related direct health care costs exceed $10 billion per year.

Deep Vein Thrombosis

DVT occurs when clot forms in the deep veins of the extremities of the body, such as the legs. While DVT can occur in any deep vein, it commonly occurs in the iliac, femoral and popliteal veins, which are located in the pelvis, thigh and knee, respectively.

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The image below depicts the location of DVT in the patient’s body:

A variety of factors can contribute to the development of clots that can cause DVT including: compression on the vein, surgery, trauma or bone fracture, long periods of bed rest, reduced blood flow from immobility, cancer, pregnancy, birth control pills and varicose veins. In addition, certain people are genetically predisposed for increased clotting. Typical symptoms of DVT include:

Upon presentation, DVT can be readily diagnosed via a standard ultrasound imaging assessment that is usually performed in the emergency room.

Symptoms can persist and worsen over time if left untreated. In addition, the location of the DVT can have a significant impact on prognosis and the ability to treat the affected vein. For example, iliofemoral DVT is typically the most dangerous and has large clot volume, poor long-term prognosis and a higher risk of adverse outcomes. Approximately 50% of patients suffering from DVT will develop post-thrombotic syndrome, or PTS, which is caused by chronic scarring and occlusion of vessels. PTS is a severe, lifestyle-limiting disease that is characterized by chronic pain, swelling and skin ulcers. Approximately 90% of patients with PTS are unable to work 10 years after diagnosis.

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Pulmonary Embolism

PE occurs when a venous clot embolizes or becomes mobile, travels through the heart and gets lodged in the pulmonary arteries of the lungs. Venous clot that causes PE originates as DVT.

The image below depicts the location of PE in the patient’s body:

A blood clot in the pulmonary arteries increases pressure in these vessels, which causes an increase in the workload of the heart. This initiates a cascade of events, leading to trouble breathing, chest pain, coughing blood, rapid heartbeat and passing out. Upon presentation, PE can be readily diagnosed via a computerized tomography, or CT, scan of the chest.

The most serious complication associated with PE is death, usually due to cardiovascular collapse from sudden failure of the heart, specifically the right ventricle. As many as 50% of patients who survive have long-term residual pulmonary vascular obstruction due to the body’s inability to break down and eliminate the clot. These patients may experience significant impaired function of the heart and lungs, shortness of breath, reduced exercise capacity and lifestyle limitations. In addition, these patients have a statistically higher rate of recurrent PE, pulmonary hypertension, heart failure and death.

PE is often characterized and stratified based on risk to the patient. High risk, or massive, PE is characterized by right heart strain and low systemic blood pressure, and has a mortality rate of up to 50%. Intermediate risk, or submassive, PE is characterized by right heart strain with normal systemic blood pressure, and has a mortality rate of 12-15%. Low risk, or minor PE, has minimal risk of mortality. Approximately 5%, 45% and 50% of PE patients are categorized as high risk, intermediate risk and low risk, respectively.

Current Treatment Alternatives and Their Limitations

There are several treatment options for DVT and PE patients, ranging from conservative medical management to advanced catheter-based interventions. We estimate that 68% of our target DVT patients and 90% of our target PE patients are treated with anticoagulants alone. We estimate that the remaining 32% of our target DVT patients and 10% of our target PE patients also receive additional treatment beyond anticoagulation. These treatments

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include mechanical thrombectomy, thrombolytic drugs and surgery. There is no consistent approach for determining whether a given patient receives anticoagulants alone or in conjunction with additional treatments. Due in part to the limitations and potential dangers of these additional treatments, most patients are treated with anticoagulation alone.

Anticoagulant Drugs

Conservative medical management with anticoagulant drugs is, and for several decades has been, the primary treatment for DVT and PE. Nearly all patients receive this treatment, many of whom remain on anticoagulants for the remainder of their lives. Anticoagulants do not break down or eliminate existing blood clots. Instead, anticoagulants are intended to stop the formation of additional blood clots and limit the growth of existing blood clots while the body attempts to break down and remove clots using natural mechanisms.

Anticoagulation is often initiated intravenously on an inpatient basis and patients generally remain in the hospital for several days for monitoring while on these drugs. Once stabilized, the patient is transitioned to oral therapy with either Coumadin or a direct-acting oral anticoagulant, such as Eliquis or Xarelto, and is then discharged from the hospital. Patients can remain on these drugs for months or years, and some patients will remain on these drugs for the remainder of their lives.

Mechanical Thrombectomy

Mechanical thrombectomy is an interventional procedure in which a catheter is used to remove clot from vessels in the body, typically by aspiration. There are dozens of catheters available for this type of procedure, although these devices were almost all originally designed for use in the arterial system, which involves the removal of soft, small clots from small vessels.

Some mechanical thrombectomy devices use a hybrid approach that combines aspiration-based mechanical thrombectomy and localized delivery of thrombolytic drugs.

We believe there are a number drawbacks and limitations to existing mechanical thrombectomy treatment options and that existing options do not adequately treat VTE for several reasons, including:

Thrombolytic Drugs and Catheter-Directed Thrombolysis

Thrombolytic drugs accelerate the body’s natural mechanisms for clearing clot by catalyzing the enzyme that breaks down the fibrin composition of clot. These drugs have demonstrated efficacy in breaking down newly-

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formed, fibrin-rich clot. However, thrombolytic drugs are generally not effective on older clot in which clot composition has changed from a fibrin matrix to a firmer collagen matrix.

Treatment with thrombolytic drugs is associated with a risk of spontaneous major bleeding, including catastrophic bleeding in the brain. To address some of this risk, catheter-directed thrombolysis was developed to deliver a smaller dose of thrombolytic drug directly to the site of the clot. The catheter-directed procedure involves placing a small catheter into a vein, usually at the knee or groin, and through the clot. Thrombolytic drugs are then infused through the catheter into the clot for several hours to several days. Thrombolytic drugs are always delivered in a critical care setting, such as the ICU, due to the significant bleeding risk.

We believe that thrombolytic drug therapy does not adequately treat VTE for several reasons, including:

Other Treatment Options

Other treatment options for DVT include stenting and intravascular filters to catch clot in the event that it embolizes. In addition, open surgical embolectomy is used in a very limited number of critical patients. Open surgical embolectomy is an invasive open chest surgery in which blood flow is stopped and a ventilator is used while surgeons physically remove clot from the patient. According to a published study, fewer than 250 open surgical embolectomy procedures are performed in the United States each year.

Our Solution

We believe that the venous system represents the newest frontier for effective catheter-based mechanical treatments. The treatment of other thrombotic diseases, such as myocardial infarction and stroke, has evolved from the use of anticoagulants to thrombolytic drugs and eventually to definitive catheter-based interventions. We believe this evolution has contributed to improved treatment outcomes and decreased mortality rates for these diseases. We believe this evolution of treatment to definitive catheter-based intervention has not yet occurred for VTE because existing devices do not safely and effectively remove venous clot. For example, while the number of annual PE diagnoses has generally increased over time, we believe existing treatment options have not had a meaningful impact on mortality rates. We believe our purpose-built ClotTriever and FlowTriever products offer significant clinical benefits and address the safety and effectiveness limitations of thrombolytic drugs and repurposed arterial devices for the treatment of VTE. We believe our products could be the catalyst to drive the evolution of treatment for VTE and have the potential to become the standard of care for treatment of VTE patients.

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Key Benefits of our ClotTriever and FlowTriever Products

We believe the ClotTriever and FlowTriever are transformational devices that address the specific characteristics and requirements of the venous system and venous clot morphology and offer hospitals, physicians and patients the following key benefits:

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ClotTriever

The ClotTriever is a mechanical thrombectomy system designed to core, capture and remove large clots from large vessels and is used to treat DVT. The ClotTriever is a single-use, sterile system that is deployed over a wire and does not require capital equipment. The ClotTriever is 510-(k) cleared by the FDA and CE Mark approved for the treatment of DVT.

The ClotTriever system consists of two components:

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The image below depicts the components of the ClotTriever system:

Procedure

A ClotTriever procedure is performed in a cath lab, interventional suite or operating room. The patient is typically placed on his or her stomach on the procedure table. Using standard endovascular techniques, the procedure begins with a needle puncture in the back of the leg to gain access to the vein. A guidewire is inserted and advanced through the clot and is positioned beyond the clot. The ClotTriever sheath is then advanced over the guidewire and positioned in the vein in the back of the leg. Once in position, the self-expanding nitinol mesh funnel is deployed from the tip of the sheath. The funnel expands to the wall of the vein and helps to ensure efficient capture and removal of the clot. Next, the ClotTriever catheter is advanced over the guidewire and through the sheath. The catheter is advanced over the guidewire through the clot and is positioned beyond the clot for deployment.

The catheter is then unsheathed to expose the self-expanding nitinol coring element and collection bag. Using the catheter’s handle mechanism, tension is then applied to the coring element, which expands to the wall of the vein. The catheter is then slowly retracted back towards the sheath, coring and liberating the clot from the vessel wall and capturing it within the collection bag, which provides embolic protection throughout the duration of the retraction. Clot removal is entirely mechanical, which minimizes blood loss and does not require the use of thrombolytic drugs or a stay in the ICU. The catheter is slowly retracted back through the diseased vessel until the

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coring element of the catheter connects with the funnel of the sheath. Using the same handle mechanism, tension is then removed from the coring element and the catheter is withdrawn through the sheath. As the catheter enters the sheath, the clot is safely collapsed and elongated inside the collection bag. After the catheter has been fully removed from the body, any remaining clot particles in the sheath can be removed using aspiration.

Once removed from the body, we have developed techniques that enable the efficient removal of clot from the catheter, which can then be reinserted for additional passes to remove more clot. There is an average of four passes per case. Upon completion of the treatment, the sheath is removed from the patient and the physician completes standard closure of the access site. We estimate the current average device usage time for the treatment with the ClotTriever to be between 30 and 45 minutes and that the ClotTriever removes an average of 80-90% of the target clot.

Pricing

The vast majority of ClotTriever procedures use a single ClotTriever catheter and single ClotTriever sheath. Each component is priced and packaged separately.

FlowTriever

The FlowTriever is a large bore catheter-based aspiration and mechanical thrombectomy system designed to remove large clots from large vessels to treat PE. The FlowTriever is a single-use, sterile system that is deployed over a wire and does not require capital equipment. The FlowTriever is 510(k)-cleared by the FDA for the treatment of PE and for clot in transit in the right atrium, and CE Mark approved for the treatment of PE.

The FlowTriever consists of two main components:

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The image below depicts the components of the FlowTriever system:

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Procedure

A FlowTriever procedure is performed in a cath lab, interventional suite or operating room. The patient is typically placed on his or her back on the procedure table. Using standard endovascular techniques, the procedure begins with a needle puncture in a large vein in either the groin or the neck. A guidewire is inserted and advanced through the venous system, through the right side of the heart, and is passed through the target clot in the pulmonary artery. The large bore Triever aspiration catheter is then advanced over the guidewire to the target clot. Once the Triever aspiration catheter is in position, the stopcock on the back of the system is closed and the large bore 60 cc syringe is attached. The syringe is used to create a strong vacuum. Opening the stopcock releases the vacuum. This vacuum, when delivered through the large bore Triever aspiration catheter, creates a high flow aspiration, which we call the Whoosh, that draws clot into the Triever aspiration catheter. The flow volume is limited by the large bore 60 cc syringe, which helps to minimize blood loss. Multiple passes and aspirations are possible depending on the clot volume and number of vessels to be treated. We estimate the median blood loss from procedures using the FlowTriever to be 280 cc.

If clot remains following aspiration, the FlowTriever catheter may be advanced through the Triever aspiration catheter to just beyond the clot. We estimate that the FlowTriever catheter is used in approximately 50- 60% of cases. Once in position, the FlowTriever catheter is unsheathed to deploy the self-expanding nitinol mesh disks into the clot. The FlowTriever catheter is then slowly pulled back toward the Triever aspiration catheter, disrupting the clot and delivering it to the Triever aspiration catheter. The Triever aspiration catheter can be used for further aspiration if needed.

Upon completion of the treatment, all devices and wires are removed from the patient and the physician completes standard closure of the entry site. We estimate the average device usage time for treatment with a FlowTriever is between 40 and 50 minutes, the average procedure time for treatment with a FlowTriever is between 75 and 90 minutes, and that the FlowTriever removes an average of 75% of the target clot.

Pricing

The use of the FlowTriever system varies significantly based on the specific patient’s diagnosis and disease characteristics. For example, some patients are treated using aspiration alone and, as a result, the relevant procedure uses one or more Triever aspiration catheters but does not require a FlowTriever catheter. Other patients are treated using aspiration in combination with mechanical engagement of the clot, in which case the procedure uses one or more Triever aspiration catheters and one or more FlowTriever catheters. Due to the variability in use across procedures, we price the FlowTriever on a per procedure basis. As a result, a customer is charged the same price for each procedure that uses the FlowTriever system, regardless of what combination of products is used to treat the patient. We believe that this approach provides greater pricing certainty, can help to preserve hospital economics and emphasizes clinical considerations in determining device use for any given procedure. Each component is packaged separately.

FlowTriever for DVT

A portion of patients with DVT present with anatomical complexities and lesion types that require more involved procedures and techniques to treat their disease. In these cases, physicians may elect to use one or more components of our FlowTriever system to treat DVT, with or without the ClotTriever. For the years ended December 31, 2020 and 2019, we estimate that approximately 12% and 13%, respectively, of our DVT procedures were performed using only our FlowTriever system and approximately 7% and 8%, respectively, of our DVT procedures were performed using our ClotTriever and at least one component of the FlowTriever system. We believe the cross-treatment application of our products reflects the complexity of venous disease, versatility of our product portfolio and the value of a comprehensive venous solution.

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Clinical Data

The primary clinical study we have completed to date is our FlowTriever Pulmonary Embolectomy Clinical Study, or FLARE study, which established the safety and effectiveness of the FlowTriever for the treatment of PE without the use of thrombolytic drugs. We are currently enrolling two 500-patient registries: CLOUT for DVT and FLASH for PE. In addition, we expect to initiate the FLAME registry for high-risk PE in 2021 and there are multiple ongoing investigator-initiated studies.

ClotTriever

The FDA granted 510(k) clearance of the ClotTriever in February 2017 based on a determination that the ClotTriever was substantially equivalent to a legally marketed predicate device and, in September 2020, granted 510-(k) clearance for the treatment of DVT. We were not required by the FDA to conduct clinical studies on the ClotTriever prior to seeking clearance. We are aware of a significant number of case reports, as well as independent research by various hospitals and researchers, that provide clinical evidence supporting the use of the ClotTriever. We are currently enrolling patients in the CLOUT registry to evaluate real-world patient outcomes using the ClotTriever in up to 500 patients.

CLOUT Registry

The CLOUT registry is a prospective, multi-center, single-arm registry designed to evaluate real-world patient outcomes and capture several longer term outcome measures. We plan to enroll up to 500 patients with lower extremity DVT at up to 50 sites across the United States. The registry will enroll all-comer patients, including patients with bilateral DVT and clots of any age, with a primary analytic dataset that will include 91 patients with unilateral DVT of less than six weeks’ duration. We believe data from the registry will generate a robust cadence of publications and, ultimately, will inform the design of future definitive clinical trials with the goal of establishing the ClotTriever as the standard of care for treatment of DVT.

Eligible patients must meet inclusion criteria specified for the registry. Generally, patients must exhibit lower extremity DVT affecting, alone or in combination, the femoral, common femoral, iliac veins or inferior vena cava, or IVC. Notably, there are no exclusions for age of clot. Patients will be excluded if they have received a prior venous stent in the target venous segment, have IVC aplasia or hypoplasia or other congenital anatomic anomalies of the IVC or iliac veins, have an IVC filter in place at the time of treatment, have allergy, hypersensitivity or thrombocytopenia from heparin or iodinated contrast agents that cannot be adequately pre-treated, have a life expectancy of less than one year, have long-term non-ambulatory status, have known hypercoagulability, which is the tendency to have or form clot as a result of inherited or acquired molecular defects, that cannot be medically managed throughout the study period or do not have an available lower extremity venous access site for the procedure.

The primary outcome measures will be evaluated in the primary analytic dataset, which is expected to include 91 patients with unilateral DVT of less than 6 weeks’ duration. The primary safety endpoint is the composite of patients that experience major adverse events, including death, major bleeding, symptomatic PE or rethrombosis of the target venous segment, within 30 days of treatment using the ClotTriever. The primary effectiveness outcome measure is the rate of technical success from the procedure, which is defined as the complete or near complete (75% or greater) removal of clot from the target venous segment. Secondary safety outcomes that are also being reported include minor bleeding, access site complications and device and procedure-related death. Secondary effectiveness outcome measures include recurrent DVT and scores on various clinical symptom tests. In addition, there are follow-up visits for patients at up to two years from the date of treatment.

Interim results from the first 105 patients enrolled in the CLOUT registry study were presented at the Annual Meeting of the American Venous Forum, or AVF, in March 2020. These interim results, as of a January 17, 2020 cutoff date, included baseline and acute procedural outcomes in 105 patients and outcomes from 30-day follow-up in 68 patients. We believe these interim results provide evidence supporting the potential for the ClotTriever to successfully treat a range of clot in patients with DVT in a single session and without the need for thrombolytic drugs. For example, as of the cutoff date, clot was removed from all but one of the patients in a single session and, based on an evaluation conducted as of February 5, 2020, 70% of 59 evaluable patients met the study’s primary

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effectiveness endpoint of complete or near complete (≥75%) removal of clot. Of the 65 patients for which follow-up data was collected regarding post-thrombotic syndrome, or PTS, 39 of the 61 patients that reported PTS at baseline (64%) showed no evidence of PTS at 30 days, and 60 out of all 65 patients evaluated for PTS (92%) showed improvement. No patients experienced severe disease within 30 days of treatment. Patients reported statistically significant improvements in disease severity, pain and quality of life scores within 30 days of treatment, with no device related major adverse events. Three patients (2.9%) had major adverse events within 30 days of treatment. Of these major adverse events, one patient died on day 23 after treatment because of sepsis and kidney failure associated with metastatic lung cancer (which was determined not to be procedure-related); one patient with previously documented extensive bilateral saddle PE prior to ClotTriever thrombectomy had symptomatic PE on day 2 after treatment (which was determined to be possibly procedure-related); and one patient had re-thrombosis on day 21 after treatment with incomplete thrombectomy and a Marder score reduction of 53.3% (which was determined to be procedure-related). No bleeding complications or renal injuries were reported and one wound complication, a hematoma, was reported. We believe these interim results are even more impressive given the complexity of the patient population. For example, over a quarter of the patients enrolled previously received alternative DVT treatment prior to treatment using the ClotTriever. In addition, almost two thirds of the patients enrolled had clots estimated to be more than two weeks old, which we believe represents a patient population that has never been previously studied for purposes of DVT thrombectomy. With the exception of one procedure, all patients were treated in a single session, with no patients receiving thrombolytic therapy, and the median thrombectomy time was 31 minutes.

Below is a summary of the outcomes information presented at the AVF Annual Meeting in March 2020:

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Below is a summary of the procedural information presented at the AVF Annual Meeting in March 2020:

Below is a summary of the baseline characteristics presented at the AVF Annual Meeting in March 2020

FlowTriever

The safety, effectiveness and clinical advantages of the FlowTriever have been observed in our first clinical trial, the FLARE study, and have also been observed in multiple post-market studies competed by various hospitals and research organizations. The FLARE study was conducted under an investigational device exemption, or IDE, approved by the FDA, and was conducted to evaluate the safety and effectiveness of the FlowTriever for use in the removal of clot from the pulmonary arteries and in the treatment of acute PE. The study supported the initial FDA 510(k) clearance for the FlowTriever. The results of the study were published in May 2019 in the Journal of the American College of Cardiology: Cardiovascular Interventions. We are currently enrolling patients in the FlowTriever All-Comer Registry for Patient Safety and Hemodynamics, or FLASH registry, to evaluate real-world patient outcomes using the FlowTriever in up to 500 patients.

FLASH Registry

The FLASH registry is a prospective, multi-center registry designed to evaluate real-world patient outcomes and capture several acute and longer term outcome measures. We plan to enroll up to 500 patients with intermediate and high risk PE at up to 50 sites across the United States. We believe data from the FLASH registry will generate a

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robust cadence of publications and, ultimately, will inform the design of future definitive clinical trials with the goal of establishing the FlowTriever as the standard of care for treatment of PE.

Eligible patients must meet inclusion criteria specified for the registry. Generally, patients must exhibit clinical signs and symptoms consistent with acute PE and/or CT or pulmonary angiography evidence of proximal filling defect in at least one main or lobar pulmonary artery and be scheduled for treatment for PE using the FlowTriever at the investigator’s discretion. Patients will be excluded if they are unable to receive anticoagulant therapy, have known sensitivity to radiographic contrast agents that cannot be adequately pre-treated, have a life expectancy of less than 30 days or are participating in another investigational drug or device treatment study that would interfere with participation in the registry, or if imaging evidence or other evidence suggests that the patient is not appropriate for a catheter-based thrombectomy procedure.

The primary outcome measure is the composite of patients that experience major adverse events, including device-related death, major bleeding, or device or procedure-related adverse events, in the 48 hours after treatment using the FlowTriever. Secondary safety outcomes that are also being reported include the rate of patients with individual components of composite major adverse events in the 48 hours after treatment and the rates of death and device-related serious adverse events within 30 days of treatment. Secondary effectiveness outcomes include change in pulmonary artery pressures, changes in a range of on-table hemodynamic measurements and utility measures, such as length of stay in the ICU and hospital. In addition, there are follow-up visits for patients at up to six months from the date of treatment.

In October 2020, we announced positive results from the first 230 patients enrolled in the FLASH registry.  Of these patients, 98.7% (227/230) met the registry’s primary endpoint of freedom from major adverse events in the 48 hours after treatment using the FlowTriever. Secondary endpoints include impact on acute hemodynamics, procedural measures, 48-hour all-cause mortality and longer-term patient outcomes. All secondary outcome measures analyzed show statistically significant and clinically meaningful improvements from baseline.  In addition, there were no deaths in the 48 hours after treatment, cardiac or pulmonary injuries or procedure-related clinical deteriorations. Further, there were no instances of intracranial hemorrhage, which is a limitation of treatment with thrombolytic drugs. Hemodynamic parameters, including pulmonary artery pressure and cardiac index improved significantly after treatment. The median duration of ICU stay was zero days following intervention.

Immediate post-procedural hemodynamic improvements have not been demonstrated with thrombolytic-based approaches, which can take several hours to take effect.  After treatment using the FlowTriever, patient heart rates quickly improved by an average of 23 beats per minute. The majority (77%) of patients were tachycardic (>100 bpm) pre-procedure and 25% were tachycardic immediately after treatment. In addition, the average pulmonary artery pressure dropped by 7mmHg, with several patients normalizing immediately after clot removal.

In November 2020, we announced positive follow-up results from these first 230 patients that were previously reported in October 2020 and for whom the study extended the follow-up period to 30 days after treatment with FlowTriever. At 30 days, one death (0.4%) was reported and the results showed a readmission rate of 6.7%. In contrast, the national PERT Consortium Quality Database recently showed 30-day mortality rates of 25.9% and 6.1% for high- and intermediate-risk PE patients and a readmission rate of nearly 25%. Efficacy data was also positive and showed normalization or near normalization in a battery of hemodynamic variables, such as pulmonary artery pressure, RV/LV ratio and heart rate, as well as dyspnea (shortness of breath) metrics.  

FLARE Study

Our first clinical trial, the FLARE study, was a prospective, single-arm, multicenter IDE study conducted at 18 sites across the United States from April 2016 to October 2017. The study evaluated the treatment of 106 patients with intermediate risk PE using the first generation FlowTriever. The study met both of its primary endpoints, which demonstrated safety and effectiveness and represented what we believe to be the first demonstration of successful treatment of PE without the use of thrombolytic drugs or its consequent ICU stay. Data from the study supported the initial FDA 510(k) clearance for the FlowTriever.

All patients enrolled in the study were symptomatic for 14 days or fewer, with clinical signs and presentation consistent with PE, including documented proximal PE by computed tomography, or CT, angiography, and a site-

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reported right ventricle/left ventricle, or RV/LV, ratio of 0.9 or greater by CT. Patients were required to have a stable heart rate and systolic blood pressure and to be deemed medically eligible for an interventional procedure. Patients were excluded for use of thrombolytic drugs within 30 days of their CT angiography for the study, active cancer and contraindication to anticoagulant therapy. Patients with recent surgery and other high bleeding risks were not excluded.

The primary effectiveness endpoint was a reduction in core laboratory-assessed RV/LV ratio. The average RV/LV ratio decreased from 1.53 (n = 104) at baseline assessment to 1.15 (n = 101) in the 48 hours after treatment using the FlowTriever, representing a statistically significant reduction in RV/LV ratio of 0.38 on average (25.1%; p < 0.0001).

The primary safety endpoint was measured by device-related death, major bleeding, treatment-related clinical deterioration, pulmonary vascular injury or cardiac injury in the 48 hours after treatment using the FlowTriever. Four patients (3.8%) experienced six major adverse events in the 48 hours after treatment. All major adverse events were determined to be procedure related, with no device-related major adverse events. All four (3.8%) patients exhibited clinical deterioration. There was one major bleeding event (0.9%) and one pulmonary vascular injury. The major bleeding event experienced by one patient was also classified as a pulmonary vascular injury and as clinical deterioration. Two patients (1.9%) experienced respiratory deterioration during or immediately after the procedure that required emergent intubation. One patient (0.9%) became agitated during the procedure, requiring increased sedation, and had a ventricular fibrillation event that required cardioversion and emergent intubation. An additional 10 patients experienced serious adverse events within 30 days after treatment, none of which were determined to be procedure or device-related. In total, 14 patients (13.2%) experienced 26 serious adverse events within 30 days, with five patients (4.7%) experiencing multiple serious adverse events. One patient (0.9%) died within 30 days of treatment because of respiratory failure from undiagnosed metastatic breast cancer. The mean procedure time was 94 minutes.

The FLARE study also provided evidence supporting other potential advantages of the FlowTriever. Only two patients (1.9%) in the study were administered thrombolytic drugs. Further, the average ICU stay of patients enrolled in the study was 1.5 days and 41.3% of patients did not go to the ICU. The average total hospital stay for patients enrolled in the study was 4.1 days.

Other Studies

There are a number of additional investigator-initiated studies being conducted to evaluate, among others, clot morphology, healthcare economics and long-term implications involving VTE.

Sales and Marketing

We currently sell our products to over 800 of the approximately 1,500 hospitals in the United States with a cath lab where interventional procedures can be performed. Our treating physicians are interventional cardiologists, interventional radiologists and vascular surgeons. As we expand our network of hospital customers and leverage our expanding sales organization, we seek to increase awareness within these hospitals and with our treating physicians, referring physicians and other stakeholders at the account level in order to drive greater adoption of our products as the preferred first-line solution for the treatment of venous diseases. This strategy enables our sales representatives to have regular and targeted communications to convey the benefits of our products to non-interventional physicians, such as emergency department physicians and pulmonologists. To accomplish this, we conduct regular national, regional and local training and educational programs for both interventional and non-interventional physicians. In 2020 we launched our online education portal and expanded our physician outreach and training with the launch of our Clot Warrior Academy, which consists of a series of live webinars.

We have dedicated meaningful resources to building a direct sales force in the United States and we are actively expanding our sales organization through additional sales representatives and territories. We have 510(k) clearance in the United States and have obtained CE Marks in Europe for both our ClotTriever and FlowTriever products.

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We recruit sales representatives who have substantial and applicable medical device and/or sales experience. Our most important relationships are between our sales representatives and physicians. Our front-line sales representatives typically attend procedures, which puts us at the intersection of the patient, product and physician. We have developed systems and processes to harness information gained from these interactions and we leverage this information to rapidly iterate products, introduce and execute physician education and training programs and scale our sales organization. We continue to expand our network of sales representatives and as of December 31, 2020, we had 120 sales territories.

Our products are simple, intuitive and easy to use, and do not require significant additional training. They are designed to utilize standard endovascular skills. Our treating physicians can readily learn the required additional techniques for use of our products.

Coverage and Reimbursement

In the United States, we sell our products to hospitals. Hospitals in turn bill various third-party payors, such as Medicare, Medicaid and private health insurance plans, for the total healthcare services required to treat the patient. Government agencies, private insurers and other payors determine whether to provide coverage for a particular procedure and to reimburse hospitals for inpatient treatment at a fixed rate based on the diagnosis-related group, or DRG, as determined by the U.S. Centers for Medicare and Medicaid Services, or CMS. The fixed rate of reimbursement is based on the procedure performed, and is unrelated to the specific medical device used in that procedure. Medicare rates for the same or similar procedures vary due to geographic location, nature of facility in which the procedure is performed (i.e., teaching or community hospital) and other factors. While private payors vary in their coverage and payment policies, most use coverage and payment by Medicare as a benchmark by which to make their own decisions.

ClotTriever

Procedures using our ClotTriever product are categorized under CPT code 37187 for venous mechanical thrombectomy procedures. The primary ICD-10-CM diagnosis code for DVT is I82.40. The MS-DRGs are 270 when the patient presents with major complications or co-morbidities, 271 when the patient presents with a complication or co-morbidity, and 272 for patients without complications or co-morbidities.

FlowTriever

Procedures using our FlowTriever product are categorized under CPT code 37184 under arterial, noncoronary, mechanical thrombectomy procedures. The primary ICD-10-CM diagnosis code for PE is I26.9. The MS-DRGs are 163 when the patient presents with major complications or co-morbidities, 164 when the patient presents with a complication or co-morbidity, and 165 for patients without complications or co-morbidities.

We understand that in 1983, CMS adopted a National Coverage Determination, or NCD, for Transvenous Pulmonary Embolectomy, NCD 240.6. At that time, NCD 240.6 deemed pulmonary embolectomy to be experimental and non-covered by Medicare. NCD 240.6 does not have a published effective date, does not provide any details about the non-covered procedure or devices, and does not cite any of the factors or evidence that was used to establish non-coverage. Since that time, technology and clinical practices related to embolectomy have changed significantly. We also understand that multiple physician societies have requested that CMS remove NCD 240.6.

While NCD 240.6 is published, CMS approved Medicare coverage for FlowTriever procedures performed in connection with our FLARE study under Medicare’s Category B IDE coverage policy and hospitals have continued to perform FlowTriever procedures. See “Risk Factors—Risks Related to Our Business—Catheter-based treatment for PE is subject to a Medicare National Coverage Determination that may restrict Medicare coverage for procedures using our FlowTriever product for the treatment of PE.”

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Research and Development

We are dedicated to the treatment of venous disease and are committed to driving innovation for the treatment of VTE, including DVT and PE. We believe our ability to develop innovative products for the treatment of VTE is attributable to our focus on the venous system, the design philosophy and product innovation process that we have implemented, our efforts to leverage and expand our clinical evidence and the insights that we have gained from our work in developing our products to date. Our engineering team has broad mechanical and biomedical engineering, project management, materials science, design and prototyping expertise.

Our research and development effort is informed by near real-time field-based input from our sales organization, physicians and the direct field experience of our engineers. This process has allowed us to rapidly innovate and enhance our products.

We are currently focused on three key goals as we develop additional and next generation venous products for commercialization. First, we seek to continue to enhance the effectiveness, efficiency and ease of use of our current products. Second, we plan to expand the application of our thrombectomy technology to areas of the body that are not addressed by our existing products. Third, we are developing solutions beyond thrombectomy to address other unmet needs.

For the years ended December 31, 2020, 2019 and 2018, our research and development expenses were $18.4 million, $7.2 million and $4.0 million, respectively.

Manufacturing and Supply

We currently manufacture and assemble our ClotTriever and FlowTriever products at our approximately 40,000 square foot facility in Irvine, California. We also inspect, test, package and ship finished products from this facility. We have intentionally pursued a vertically integrated manufacturing strategy. We believe this offers important advantages, including rapid product iteration and control over our product quality. Although we believe our current manufacturing capacity is sufficient to meet our current expected demand for at least the next 12 months, we have entered into a lease agreement for a larger facility in Irvine, California to accommodate our growth plans.

We are registered with the FDA as a medical device manufacturer and are licensed by the State of California to manufacture and distribute our medical devices. We are required to manufacture our products in compliance with the FDA’s Quality System Regulation, or QSR. The FDA enforces the QSR through periodic inspections and may also inspect the facilities of our suppliers. We moved to our current Irvine, California facility in November 2019, which has been registered with the FDA and was approved by the State of California for the manufacture and distribution of medical devices in October 2019. The FDA conducted its most recent inspection in August 2016. This inspection was conducted at our prior facility, which was also located in Irvine, California. The FDA has not conducted an inspection at our current facility.

We have received International Organization for Standardization, or ISO, 13485:2016 certification for our quality management system. ISO certification generally includes recertification audits every third year, scheduled annual surveillance audits and periodic unannounced audits. The most recent recertification audit was conducted in November 2020.  One major non-conformity was identified that has been addressed to the satisfaction of the notified body in January 2021. There have been no surveillance audits or unannounced audits on our new facility.

We use a combination of internally manufactured and externally-sourced components to produce our ClotTriever and FlowTriever products. Externally-sourced components include off-the-shelf materials, sub-assemblies and custom parts that are provided by approved suppliers. Almost all of these components, including the nitinol coring element of the ClotTriever, are provided by single-source suppliers. While there are other suppliers that could make or provide any one of our externally-sourced components, we seek to manage single-source supplier risk by regularly assessing the quality and capacity of our suppliers, implementing supply and quality agreements where appropriate and actively managing lead times and inventory levels of sourced components. In addition, we are currently in the process of identifying and approving alternative suppliers to dual or multi-source certain of our components. We generally seek to maintain sufficient supply levels to help mitigate any supply interruptions and enable us to find and qualify another source of supply. For certain components, we estimate that it would take up to

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six months to find and qualify a second source. Order quantities and lead times for externally sourced components are based on our forecasts, which are derived from historical demand and anticipated future demand. Lead times for components may vary depending on the size of the order, time required to fabricate and test the components, specific supplier requirements and current market demand for the materials, sub-assemblies and parts.

Our suppliers are evaluated, qualified and approved as part of our supplier quality program, which includes verification and monitoring procedures to ensure that our suppliers comply with FDA and ISO standards as appropriate, as well as our own specifications and requirements. We inspect and verify externally sourced components under strict processes supported by internal policies and procedures. We maintain a rigorous change control policy to assure that no product or process changes are implemented without our prior review and approval.

Our finished products are ethylene oxide sterilized at a local, qualified supplier.

Competition

The medical device industry is highly competitive, subject to rapid change and significantly affected by the introduction of new products and technologies and other activities of industry participants. We compete with manufacturers of thrombolytic drugs, such as Roche, and with medical device companies that manufacture thrombectomy devices and systems used to treat vascular blockages. These systems include water jets, ultrasonic acoustic field generators, aspirators, catheters and others. Our primary medical device competitors are Boston Scientific Corporation, Penumbra, AngioDynamics, Teleflex, Shandong Weigao and smaller companies that have single products or a limited range of products. There is growing interest in treatment of VTE with catheter-based solutions, and there are a significant number of approved thrombectomy devices available. As this interest continues to grow, we anticipate that this competition will intensify.

Many of our competitors have longer, more established operating histories, and significantly greater name recognition and financial, technical, marketing, sales, distribution and other resources. In addition, certain competitors have several competitive advantages, including established treatment patterns pursuant to which drugs are generally first-line or concurrent therapies for the treatment of VTE and established relationships with hospitals and physicians who prescribe their drugs or are familiar with existing interventional procedures for the treatment of VTE.

We compete primarily on the basis that our solutions are designed specifically for the venous system and are able to treat patients with DVT and PE safely, effectively and without the need for thrombolytic drugs and their related costs and complications. Our overall competitive position is dependent upon a number of factors, including patient outcomes and adverse event rates, patient experience and treatment time, acceptance by hospitals, physicians and referral sources, ease-of-use and reliability, patient recovery time and level of discomfort, economic benefits and cost savings, availability of reimbursement and the strength of clinical data and supporting evidence. One of the major hurdles to adoption of our products will be overcoming established treatment patterns, which will require education of referral sources and physicians and supportive clinical data.

Intellectual Property

We actively seek to protect the intellectual property and proprietary technology that we believe is important to our business. We rely on a combination of trademark, copyright, patent, trade secret and other intellectual property laws, employment, confidentiality and invention assignment agreements, and protective contractual provisions with our employees, contractors, consultants, suppliers, partners and other third parties to protect our intellectual property rights.

As of December 31, 2020, we held 19 U.S. patents, which are expected to expire between November 2032 and April 2037, 17 pending U.S. patent applications, four issued foreign patents, 16 pending foreign patent applications and four pending Patent Cooperation Treaty applications, excluding our licensed and sublicensed patents. The term of individual patents depends on the legal term for patents in the countries in which they are granted. In most countries, including the United States, the patent term is generally 20 years from the earliest claimed filing date of a

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nonprovisional patent application in the applicable country. Our patents include a number of claims related to our systems, future concepts for our products and methods for treating vascular occlusions and embolisms.

As of December 31, 2020, we also licensed two U.S. patents and sublicensed one U.S. patent related to braiding elements of our product designs, such as the tubular braiding of our clot collection bag. The licensed U.S. patent is expected to expire in October 2037 and is licensed pursuant to an amended and restated technology agreement, dated March 2, 2018, between Inceptus Medical, LLC, or Inceptus, and us. The license is a worldwide, exclusive, royalty-free license in the field of the treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature. The sublicensed U.S. patent is expected to expire in March 2030 and is sublicensed pursuant to a sublicense agreement, dated August 1, 2019, between Inceptus and us. Pursuant to the sublicense agreement, Inceptus granted us a non-transferable, worldwide, exclusive sublicense to its licensed intellectual property related to the tubular braiding for the non-surgical removal of clots and treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature. Inceptus licensed this intellectual property pursuant to an intellectual property license agreement, dated May 4, 2018, between Inceptus and Drexel University.

There is no active patent litigation involving any of our patents and we have not received any notices of any patent infringement.

As of December 31, 2020, we had eight registered trademarks and seven pending trademark applications worldwide, including trademark registration for “Inari Medical” in the United States and trademark registrations for “FlowTriever” and “ClotTriever” in the United States and other countries.

Our pending patent and trademark applications may not result in issued patents or trademarks, and we cannot assure you that any current or subsequently issued patents or trademarks will protect our intellectual property rights, provide us with any competitive advantage or withstand or retain its original scope after a validity or enforceability challenge from a third party. While there is no active litigation involving any of our patents or other intellectual property rights and we have not received any notices of patent or other intellectual property infringement, we may be required to enforce or defend our intellectual property rights against third parties in the future. See “Risk Factors—Risks Related to Our Intellectual Property” for additional information regarding these and other risks related to our intellectual property portfolio and their potential effect on us.

Sublicense Agreement with Inceptus Medical, LLC

In August 2019, we entered into a sublicense agreement with Inceptus, pursuant to which Inceptus granted us a non-transferable, worldwide, exclusive sublicense to its licensed intellectual property rights related to the tubular braiding for the non-surgical removal of clots and treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature; such rights were originally granted to Inceptus pursuant to an intellectual property license agreement with Drexel University, or Drexel License, under which Drexel retained certain rights to use, and to permit other non-commercial entities to use, the sublicensed intellectual property for educational and non-commercial research purposes. The sublicense is also subject to all applicable U.S. government rights, and we cannot be sure that some of our intellectual property will be free from government rights or regulations pursuant to the Bayh-Doyle Act. Furthermore, we are obligated to comply with, and to avoid acts or omissions that would reasonably be likely to cause a breach of, the Drexel License. Our sublicense from Inceptus may only be sublicensed with the prior written approval of Inceptus and Drexel University.

Pursuant to the sublicense agreement, we paid Inceptus reimbursement and milestone fees shortly after signing, and are obligated to pay an ongoing quarterly administration fee of $29,250 per quarter. Additionally, we are obligated to pay Inceptus on a quarterly basis an ongoing royalty calculated as the greater of a low-single digit percentage of net sales of products utilizing the licensed intellectual property and $1,500. The sublicense agreement specifies that our obligations to pay the quarterly administration fee and low-single digit royalty will terminate, and the licensed rights under the Drexel License will become fully paid-up and royalty and payment free if, pursuant to the terms of the Drexel License, Drexel University fails to provide timely written consent to Inceptus to join Drexel University to any patent infringement action for which Drexel University is a legally indispensable party.

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The sublicense agreement will continue until the expiration of the sublicensed patent, unless terminated earlier pursuant to the terms of the agreement. We may terminate the sublicense agreement at any time by providing prior written notice. Inceptus may terminate the sublicense agreement if we challenge the validity or enforceability of the sublicensed intellectual property, in the event of our uncured material breach, in the event of our bankruptcy or insolvency-related events, if we cease bona fide development and commercialization efforts for a specified period or if we are late in making our obligated payments under the agreement. The Drexel License includes similar term and termination provisions in respect of Inceptus and Drexel University.

Amended and Restated Technology Agreement with Inceptus Medical, LLC

In March 2018, we entered into an amended and restated technology agreement with Inceptus. Pursuant to this agreement, Inceptus granted us a worldwide, exclusive, royalty-free license to certain of its intellectual property related to the braiding and aspiration controller technologies underlying its patent for the treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature, or the defined field. As consideration, we granted Inceptus a license to use our intellectual property on reciprocal terms for use outside the defined field. These cross-licenses are perpetual and irrevocable. Neither party owes any payments to each other. We have the right to assign or transfer the amended and restated technology agreement to an entity in connection with the sale of all or substantially all of our business.

Government Regulation

Our products and our operations are subject to extensive regulation by the U.S. Food and Drug Administration, or FDA, and other federal and state authorities in the United States, as well as comparable authorities in foreign jurisdictions. Our products are subject to regulation as medical devices in the United States under the Federal Food, Drug, and Cosmetic Act, or FDCA, as implemented and enforced by the FDA.

United States Regulation

The FDA regulates the development, design, non-clinical and clinical research, manufacturing, safety, efficacy, labeling, packaging, storage, installation, servicing, recordkeeping, premarket clearance or approval, adverse event reporting, advertising, promotion, marketing and distribution, and import and export of medical devices to ensure that medical devices distributed domestically are safe and effective for their intended uses and otherwise meet the requirements of the FDCA.

FDA Premarket Clearance and Approval Requirements

Unless an exemption applies, each medical device commercially distributed in the United States requires either FDA clearance of a 510(k) premarket notification, or approval of a premarket approval, or PMA, application. Under the FDCA, medical devices are classified into one of three classes—Class I, Class II or Class III—depending on the degree of risk associated with each medical device and the extent of manufacturer and regulatory control needed to ensure its safety and effectiveness. Class I includes devices with the lowest risk to the patient and are those for which safety and effectiveness can be assured by adherence to the FDA’s General Controls for medical devices, which include compliance with the applicable portions of the Quality System Regulation, or QSR, facility registration and product listing, reporting of adverse medical events, and truthful and non-misleading labeling, advertising, and promotional materials. Class II devices are subject to the FDA’s General Controls, and special controls as deemed necessary by the FDA to ensure the safety and effectiveness of the device. These special controls can include performance standards, post-market surveillance, patient registries and FDA guidance documents.

While most Class I devices are exempt from the 510(k) premarket notification requirement, manufacturers of most Class II devices are required to submit to the FDA a premarket notification under Section 510(k) of the FDCA requesting permission to commercially distribute the device. The FDA’s permission to commercially distribute a device subject to a 510(k) premarket notification is generally known as 510(k) clearance. Devices deemed by the FDA to pose the greatest risks, such as life sustaining, life supporting or some implantable devices, or devices that have a new intended use, or use advanced technology that is not substantially equivalent to that of a legally marketed device, are placed in Class III, requiring approval of a PMA. Some pre-amendment devices are

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unclassified, but are subject to FDA’s premarket notification and clearance process in order to be commercially distributed. Our currently marketed products are Class II devices subject to 510(k) clearance.

510(k) Clearance Marketing Pathway

Our current products are subject to premarket notification and clearance under section 510(k) of the FDCA. To obtain 510(k) clearance, we must submit to the FDA a premarket notification submission demonstrating that the proposed device is “substantially equivalent” to a predicate device already on the market. A predicate device is a legally marketed device that is not subject to premarket approval, i.e., a device that was legally marketed prior to May 28, 1976 (pre-amendments device) and for which a PMA is not required, a device that has been reclassified from Class III to Class II or I, or a device that was found substantially equivalent through the 510(k) process. The FDA’s 510(k) clearance process usually takes from three to 12 months, but may take longer. The FDA may require additional information, including clinical data, to make a determination regarding substantial equivalence. In addition, FDA collects user fees for certain medical device submissions and annual fees and for medical device establishments. For fiscal year 2021, the standard user fee for a 510(k) premarket notification application is $12,432.

If the FDA agrees that the device is substantially equivalent to a predicate device currently on the market, it will grant 510(k) clearance to commercially market the device. If the FDA determines that the device is “not substantially equivalent” to a previously cleared device, the device is automatically designated as a Class III device. The device sponsor must then fulfill more rigorous PMA requirements, or can request a risk- based classification determination for the device in accordance with the “de novo” process, which is a route to market for novel medical devices that are low to moderate risk and are not substantially equivalent to a predicate device.

After a device receives 510(k) clearance, any modification that could significantly affect its safety or effectiveness, or that would constitute a major change or modification in its intended use, will require a new 510(k) clearance or, depending on the modification, PMA approval or de novo classification. The FDA requires each manufacturer to determine whether the proposed change requires submission of a 510(k), de novo request or a PMA in the first instance, but the FDA can review any such decision and disagree with a manufacturer’s determination. If the FDA disagrees with a manufacturer’s determination, the FDA can require the manufacturer to cease marketing and/or request the recall of the modified device until 510(k) marketing clearance or PMA approval is obtained, or a de novo request is granted. Also, in these circumstances, the manufacturer may be subject to significant regulatory fines or penalties.

Over the last several years, the FDA has proposed reforms to its 510(k) clearance process, and such proposals could include increased requirements for clinical data and a longer review period, or could make it more difficult for manufacturers to utilize the 510(k) clearance process for their products. For example, in November 2018, FDA officials announced steps that the FDA intended to take to modernize the premarket notification pathway under Section 510(k) of the FDCA. Among other things, the FDA announced that it planned to develop proposals to drive manufacturers utilizing the 510(k) pathway toward the use of newer predicates. These proposals included plans to potentially sunset certain older devices that were used as predicates under the 510(k) clearance pathway, and to potentially publish a list of devices that have been cleared on the basis of demonstrated substantial equivalence to predicate devices that are more than 10 years old. These proposals have not yet been finalized or adopted, although the FDA may work with Congress to implement such proposals through legislation.

More recently, in September 2019, the FDA issued revised final guidance describing an optional “safety and performance based” premarket review pathway for manufacturers of “certain, well-understood device types” to demonstrate substantial equivalence under the 510(k) clearance pathway by showing that such device meets objective safety and performance criteria established by the FDA, thereby obviating the need for manufacturers to compare the safety and performance of their medical devices to specific predicate devices in the clearance process. The FDA has developed and maintains a list device types appropriate for the “safety and performance based” pathway and continues to develop product-specific guidance documents that identify the performance criteria for each such device type, as well as the testing methods recommended in the guidance documents, where feasible.

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PMA Approval Pathway

Class III devices require PMA approval before they can be marketed, although some pre-amendment Class III devices for which FDA has not yet required a PMA are cleared through the 510(k) process. The PMA process is more demanding than the 510(k) premarket notification process. In a PMA, the manufacturer must demonstrate that the device is safe and effective, and the PMA must be supported by extensive data, including data from preclinical studies and human clinical trials. The PMA must also contain a full description of the device and its components, a full description of the methods, facilities, and controls used for manufacturing, and proposed labeling. Following receipt of a PMA, the FDA determines whether the application is sufficiently complete to permit a substantive review. If FDA accepts the application for review, it has 180 days under the FDCA to complete its review of a PMA, although in practice, the FDA’s review often takes significantly longer, and can take up to several years. An advisory panel of experts from outside the FDA may be convened to review and evaluate the application and provide recommendations to the FDA as to the approvability of the device. The FDA may or may not accept the panel’s recommendation. In addition, the FDA will generally conduct a pre-approval inspection of the applicant or its third-party manufacturers’ or suppliers’ manufacturing facility or facilities to ensure compliance with the QSR. PMA applications are also subject to the payment of user fees, which for fiscal year 2021 includes a standard application fee of $365,657.

The FDA will approve the new device for commercial distribution if it determines that the data and information in the PMA constitute valid scientific evidence and that there is reasonable assurance that the device is safe and effective for its intended use(s). The FDA may approve a PMA with post-approval conditions intended to ensure the safety and effectiveness of the device, including, among other things, restrictions on labeling, promotion, sale and distribution, and collection of long-term follow-up data from patients in the clinical study that supported PMA approval or requirements to conduct additional clinical studies post-approval. The FDA may condition PMA approval on some form of post-market surveillance when deemed necessary to protect the public health or to provide additional safety and efficacy data for the device in a larger population or for a longer period of use. In such cases, the manufacturer might be required to follow certain patient groups for a number of years and to make periodic reports to the FDA on the clinical status of those patients. Failure to comply with the conditions of approval can result in material adverse enforcement action, including withdrawal of the approval.

Certain changes to an approved device, such as changes in manufacturing facilities, methods, or quality control procedures, or changes in the design performance specifications, which affect the safety or effectiveness of the device, require submission of a PMA supplement. PMA supplements often require submission of the same type of information as a PMA, except that the supplement is limited to information needed to support any changes from the device covered by the original PMA and may not require as extensive clinical data or the convening of an advisory panel. Certain other changes to an approved device require the submission of a new PMA, such as when the design change causes a different intended use, mode of operation, and technical basis of operation, or when the design change is so significant that a new generation of the device will be developed, and the data that were submitted with the original PMA are not applicable for the change in demonstrating a reasonable assurance of safety and effectiveness. None of our products are currently marketed pursuant to a PMA.

Clinical Trials

Clinical trials are almost always required to support a PMA and are sometimes required to support a 510(k) submission. All clinical investigations of devices to determine safety and effectiveness must be conducted in accordance with the FDA’s investigational device exemption, or IDE, regulations which govern investigational device labeling, prohibit promotion of the investigational device, and specify an array of recordkeeping, reporting and monitoring responsibilities of study sponsors and study investigators. If the device presents a “significant risk,” to human health, as defined by the FDA, the FDA requires the device sponsor to submit an IDE application to the FDA, which must become effective prior to commencing human clinical trials. If the device under evaluation does not present a significant risk to human health, then the device sponsor is not required to submit an IDE application to the FDA before initiating human clinical trials, but must still comply with abbreviated IDE requirements when conducting such trials. A significant risk device is one that presents a potential for serious risk to the health, safety or welfare of a patient and either is implanted, used in supporting or sustaining human life, substantially important in diagnosing, curing, mitigating or treating disease or otherwise preventing impairment of human health, or otherwise presents a potential for serious risk to a subject. An IDE application must be supported by appropriate data, such as

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animal and laboratory test results, showing that it is safe to test the device in humans and that the testing protocol is scientifically sound. The IDE will automatically become effective 30 days after receipt by the FDA unless the FDA notifies the company that the investigation may not begin. If the FDA determines that there are deficiencies or other concerns with an IDE for which it requires modification, the FDA may permit a clinical trial to proceed under a conditional approval.

Regardless of the degree of risk presented by the medical device, clinical studies must be approved by, and conducted under the oversight of, an Institutional Review Board, or IRB, for each clinical site. The IRB is responsible for the initial and continuing review of the IDE, and may pose additional requirements for the conduct of the study. If an IDE application is approved by the FDA and one or more IRBs, human clinical trials may begin at a specific number of investigational sites with a specific number of patients, as approved by the FDA. If the device presents a non-significant risk to the patient, a sponsor may begin the clinical trial after obtaining approval for the trial by one or more IRBs without separate approval from the FDA, but must still follow abbreviated IDE requirements, such as monitoring the investigation, ensuring that the investigators obtain informed consent, and labeling and record-keeping requirements. Acceptance of an IDE application for review does not guarantee that the FDA will allow the IDE to become effective and, if it does become effective, the FDA may or may not determine that the data derived from the trials support the safety and effectiveness of the device or warrant the continuation of clinical trials. An IDE supplement must be submitted to, and approved by, the FDA before a sponsor or investigator may make a change to the investigational plan that may affect its scientific soundness, study plan or the rights, safety or welfare of human subjects.

During a study, the sponsor is required to comply with the applicable FDA requirements, including, for example, trial monitoring, selecting clinical investigators and providing them with the investigational plan, ensuring IRB review, adverse event reporting, record keeping and prohibitions on the promotion of investigational devices or on making safety or effectiveness claims for them. The clinical investigators in the clinical study are also subject to FDA’s regulations and must obtain patient informed consent, rigorously follow the investigational plan and study protocol, control the disposition of the investigational device, and comply with all reporting and recordkeeping requirements. Additionally, after a trial begins, we, the FDA or the IRB could suspend or terminate a clinical trial at any time for various reasons, including a belief that the risks to study subjects outweigh the anticipated benefits.

Post-market Regulation

After a device is cleared or approved for marketing, numerous and pervasive regulatory requirements continue to apply. These include:

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Manufacturing processes for medical devices are required to comply with the applicable portions of the QSR, which cover the methods and the facilities and controls for the design, manufacture, testing, production, processes, controls, quality assurance, labeling, packaging, distribution, installation and servicing of finished devices intended for human use. The QSR also requires, among other things, maintenance of a device master file, device history file, and complaint files. As a manufacturer, we are subject to periodic scheduled or unscheduled inspections by the FDA. Failure to maintain compliance with the QSR requirements could result in the shut- down of, or restrictions on, manufacturing operations and the recall or seizure of marketed products, which would have a material adverse effect on our business. The discovery of previously unknown problems with any of our products, including unanticipated adverse events or adverse events of increasing severity or frequency, whether resulting from the use of the device within the scope of its clearance or off-label by a physician in the practice of medicine, could result in restrictions on the device, including the removal of the product from the market or voluntary or mandatory device recalls.

The FDA has broad regulatory compliance and enforcement powers. If the FDA determines that a manufacturer has failed to comply with applicable regulatory requirements, it can take a variety of compliance or enforcement actions, which may result in any of the following sanctions:

Regulation of Medical Devices in the European Union

The European Union has adopted specific directives regulating the design, manufacture, clinical investigations, conformity assessment, labeling and adverse event reporting for medical devices. EU directives must be implemented into the national laws of the EU member states and national laws may vary from one member state to another.

In the EU, there is currently no premarket government review of medical devices. However, the EU requires that all medical devices placed on the market in the EU must meet the relevant essential requirements laid down in Annex I of Council Directive 93/42/EEC, or the EU Medical Devices Directive. The most fundamental essential requirement is that a medical device must be designed and manufactured in such a way that it will not compromise the clinical condition or safety of patients, or the safety and health of users and others. In addition, the device must achieve the performances intended by the manufacturer and be designed, manufactured, and packaged in a suitable manner. The European Commission has adopted various standards applicable to medical devices. These include standards governing common requirements, such as sterilization and safety of medical electrical equipment and product standards for certain types of medical devices. There are also harmonized standards relating to design and manufacture. While not mandatory, compliance with these standards is viewed as the easiest way to satisfy the essential requirements as a practical matter. Compliance with a standard developed to implement an essential requirement also creates a rebuttable presumption that the device satisfies that essential requirement.

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To demonstrate compliance with the essential requirements laid down in Annex I to the EU Medical Devices Directive, medical device manufacturers must undergo a conformity assessment procedure, which varies according to the type of medical device and its (risk) classification. Conformity assessment procedures require an assessment of available clinical evidence, literature data for the product, and post-market experience in respect of similar products already marketed. Except for low-risk medical devices (Class I non-sterile, non-measuring devices), where the manufacturer can self-declare the conformity of its products with the essential requirements (except for any parts which relate to sterility or metrology), a conformity assessment procedure requires the intervention of a Notified Body. Notified Bodies are often separate entities and are authorized or licensed to perform such assessments by government authorities. The Notified Body would typically audit and examine a product’s technical dossiers and the manufacturers’ quality system. If satisfied that the relevant product conforms to the relevant essential requirements, the Notified Body issues a certificate of conformity, which the manufacturer uses as a basis for its own declaration of conformity. The manufacturer may then apply the CE Mark to the device, which allows the device to be placed on the market throughout the EU.

As a general rule, demonstration of conformity of medical devices and their manufacturers with the essential requirements must be based, among other things, on the evaluation of clinical data supporting the safety and performance of the products during normal conditions of use. Specifically, a manufacturer must demonstrate that the device achieves its intended performance during normal conditions of use, that the known and foreseeable risks, and any adverse events, are minimized and acceptable when weighed against the benefits of its intended performance, and that any claims made about the performance and safety of the device are supported by suitable evidence. All manufacturers placing medical devices into the market in the EU must comply with the EU Medical Device Vigilance System. Under this system, incidents must be reported to the relevant authorities of the EU member states, and manufacturers are required to take Field Safety Corrective Actions, or FSCAs, to reduce a risk of death or serious deterioration in the state of health associated with the use of a medical device that is already placed on the market. An incident is defined as any malfunction or deterioration in the characteristics and/or performance of a device, as well as any inadequacy in the labeling or the instructions for use which, directly or indirectly, might lead to or might have led to the death of a patient or user or of other persons or to a serious deterioration in their state of health. An FSCA may include the recall, modification, exchange, destruction or retrofitting of the device. FSCAs must be communicated by the manufacturer or its legal representative to its customers and/or to the end users of the device through Field Safety Notices.

On May 25, 2017, the EU Medical Devices Regulation (Regulation 2017/745) entered into force, which repeals and replaces the EU Medical Devices Directive. Unlike directives, which must be implemented into the national laws of the EU member states, regulations are directly applicable, without the need for adoption of EU member state laws implementing them, in all EU member states and are intended to eliminate current differences in the regulation of medical devices among EU member states. The Medical Devices Regulation, among other things, is intended to establish a uniform, transparent, predictable and sustainable regulatory framework across the EU for medical devices and ensure a high level of safety and health while supporting innovation.

The Medical Devices Regulation was originally intended to become effective three years after publication, but in April 2020, the transition period was extended by the European Parliament and the Council of the EU by an additional year – until May 26, 2021. Devices lawfully placed on the market pursuant to the EU Medical Devices Directive prior to May 26, 2021 may generally continue to be made available on the market or put into service until May 26, 2025. Once effective, the new regulations will among other things:

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These modifications may have an effect on the way we design and manufacture products and how we conduct our business in the EEAEU.

The aforementioned EU rules are generally applicable in the European Economic Area, or EEA, which consists of the 27 EU member states plus Norway, Liechtenstein and Iceland.

Following the end of the “Brexit” Transition Period, from 1 January 2021 onwards, the Medicines and Healthcare Products Regulatory Agency (“MHRA”) will be responsible for the UK medical device market. The new regulations will require medical devices to be registered with the MHRA (but manufacturers will be given a grace period of four to 12 months to comply with the new registration process). Manufacturers based outside the UK will need to appoint a UK Responsible Person to register devices with the MHRA in line with the grace periods. By July 1, 2023, in the UK (England, Scotland, and Wales), all medical devices will require a UKCA (UK Conformity Assessed) mark but CE marks issued by EU Notified Bodies will remain valid until this time. However, UKCA marking alone will not be recognized in the EU. The rules for placing medical devices on the Northern Ireland market will differ from those in the UK.

Healthcare Regulatory Laws

Within the United States, our products and our customers are subject to extensive regulation by a wide range of federal and state agencies that govern business practices in the medical device industry. These laws include federal and state anti-kickback, fraud and abuse, false claims, transparency and anti-corruption statutes and regulations. Internationally, other governments also impose regulations in connection with their healthcare reimbursement programs and the delivery of healthcare items and services.

U.S. federal healthcare fraud and abuse laws generally apply to our activities because our products are covered under federal healthcare programs such as Medicare and Medicaid. The Anti-Kickback Statute is particularly relevant because of its broad applicability. Specifically, the Anti-Kickback Statute prohibits persons or entities from knowingly and willfully soliciting, offering, receiving, or providing remuneration, directly or indirectly, in exchange for, or to induce, either the referral of an individual, or the furnishing, arranging for or recommending a good or service for which payment may be made in whole or part under federal healthcare programs, such as the Medicare and Medicaid programs. Further, a person or entity does not need to have actual knowledge of the Anti-Kickback Statute or specific intent in order to violate it. The term remuneration has been interpreted broadly to include anything of value. There are a number of statutory exceptions and regulatory safe harbors protecting some common activities from prosecution. The exceptions and safe harbors are drawn narrowly and practices that involve remuneration that may be alleged to be intended to induce prescribing, purchasing, or recommending may be subject to scrutiny if they do not qualify for an exception or safe harbor. Failure to meet all of the requirements of a particular applicable statutory exception or regulatory safe harbor does not make the conduct per se illegal under the Anti-Kickback Statute. Instead, the legality of the arrangement will be evaluated on a case-by-case basis based on a cumulative review of all of its facts and circumstances.

Many states have adopted laws similar to the Anti-Kickback Statute. Some of these state prohibitions apply to referral of patients for healthcare items or services reimbursed by any payor, not only the Medicare and Medicaid programs. Insurance companies may also bring a private cause of action for treble damages against a manufacturer for a pattern of causing false claims to be filed under the federal Racketeer Influenced and Corrupt Organizations Act, or RICO.

Another development affecting the healthcare industry is the increased use of the federal Civil False Claims Act and, in particular, actions brought pursuant to the False Claims Act’s “whistleblower” or “qui tam” provisions. The False Claims Act imposes liability on any person or entity that, among other things, knowingly presents, or causes to be presented, a false or fraudulent claim for payment by a federal healthcare program. The qui tam provisions of the False Claims Act allow a private individual to bring actions on behalf of the federal government alleging that the defendant has submitted a false claim to the federal government, and to share in any monetary recovery. In recent years, the number of suits brought against healthcare providers by private individuals has increased dramatically. In addition, the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal False Claims Act. Various states have also enacted false claim laws analogous to the Civil False Claims Act,

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although many of these state laws apply where a claim is submitted to any third-party payor and not merely a federal healthcare program.

The federal Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information Technology for Economic and Clinical Health Act, or HIPAA, among other things, created two new federal crimes: healthcare fraud and false statements relating to healthcare matters. The HIPAA healthcare fraud statute prohibits, among other things, knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program, including private payors. A violation of this statute is a felony and may result in fines, imprisonment and/or exclusion from government sponsored programs. The HIPAA false statements statute prohibits, among other things, knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement or representation in connection with the delivery of or payment for healthcare benefits, items or services. Similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of these statutes or specific intent in order to violate them.

Additionally, the federal Physician Payments Sunshine Act and its implementing regulations, require that certain manufacturers of drugs, devices, biological and medical supplies for which payment is available under Medicare, Medicaid, or the Children’s Health Insurance Program (with certain exceptions) annually report information related to certain payments or other transfers of value made or distributed to physicians (as defined by statute), certain other healthcare providers beginning in 2022 and teaching hospitals, certain ownership and investment interests held by physicians and their immediate family members.

Additional laws and regulations have also been enacted by the federal government and various states to regulate the sales and marketing practices of medical device and pharmaceutical manufacturers. The laws and regulations generally limit financial interactions between manufacturers and healthcare providers; require pharmaceutical and medical device companies to comply with voluntary compliance standards issued by industry associations and the relevant compliance guidance promulgated by the U.S. federal government; and/or require disclosure to the government and/or public of financial interactions (so-called “sunshine laws”). Many of these laws and regulations contain ambiguous requirements or require administrative guidance for implementation.

Given the lack of clarity in laws and their implementation, our activities could be subject to the penalty provisions of the pertinent federal and state laws and regulations. If our operations are found to be in violation of any of the federal and state healthcare laws described above or any other governmental regulations that apply to us, we may be subject to penalties, including without limitation, civil, criminal and/or administrative penalties, damages, fines, disgorgement, exclusion from participation in government programs, such as Medicare and Medicaid, injunctions, private “qui tam” actions brought by individual whistleblowers in the name of the government, or refusal to allow us to enter into government contracts, contractual damages, reputational harm, administrative burdens, diminished profits and future earnings, and the curtailment or restructuring of our operations, any of which could adversely affect our ability to operate our business and our results of operations.

Coverage and Reimbursement

Sales of our products depend, in part, on the extent to which the procedures using our products are covered by third-party payors, such as government healthcare programs, commercial insurance and managed healthcare organizations. Third-party payors are increasingly limiting coverage and reducing reimbursements for medical products and services. In addition, the U.S. government, state legislatures and foreign governments have continued implementing cost-containment programs, including price controls, restrictions on coverage and reimbursement. Third-party payors are increasingly challenging the price, examining the medical necessity and reviewing the cost-effectiveness of medical devices and medical services, 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 our net sales and results.

Moreover, the process for determining whether a third-party payor will provide coverage for a product or procedure may be separate from the process for establishing the reimbursement rate that such a payor will pay for the product or procedure. A payor’s decision to provide coverage for a product or procedure does not imply that an adequate reimbursement rate will be approved. Further, one payor’s determination to provide coverage for a product or procedure does not assure that other payors will also provide coverage for the product or procedure. Adequate

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third-party reimbursement may not be available to enable us to maintain price levels sufficient to ensure profitability.

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, or ACA, was signed into law and substantially changed the way healthcare is financed by both governmental and private insurers in the United States. The ACA contains a number of provisions, including those governing enrollment in federal healthcare programs, reimbursement adjustments and fraud and abuse changes. Additionally, the ACA provided incentives to programs that increase the federal government’s comparative effectiveness research, and implemented payment system reforms including a national pilot program on payment bundling to encourage hospitals, physicians and other providers to improve the coordination, quality and efficiency of certain healthcare services through bundled payment models. Since its enactment, there have been 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.

Other legislative changes have been proposed and adopted in the U.S. since the ACA was enacted, including aggregate reductions of Medicare payments to providers of 2% per fiscal year which has been suspended from May 1, 2020 through March 31, 2021, and reduced payments to several types of Medicare providers. Moreover, there has recently been heightened governmental scrutiny, including increasing legislative and enforcement interest, 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, review the relationship between pricing and manufacturer patient programs and reform government program reimbursement methodologies for products. Individual states in the United States have also become increasingly active in implementing regulations designed to control 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, mechanisms to encourage importation from other countries. Furthermore, there has been increased interest by third party payors and governmental authorities in reference pricing systems and publication of discounts and list prices.

Data Privacy and Security

Medical device companies may be subject to U.S. federal and state health information privacy, security and data breach notification laws, which may govern the collection, use, disclosure and protection of health-related and other personal information. Entities that are found to be in violation of HIPAA as the result of a breach of unsecured PHI, a complaint about privacy practices or an audit by HHS, may be subject to significant civil, criminal and administrative fines and penalties and/or additional reporting and oversight obligations if required to enter into a resolution agreement and corrective action plan with HHS to settle allegations of HIPAA non-compliance.

In addition, certain state and foreign laws govern the privacy and security of health information in certain circumstances, some of which are more stringent than HIPAA and many of which differ from each other with these laws, where applicable, can result in the imposition of significant civil and/or criminal penalties and private litigation. For example, California recently enacted legislation, the California Consumer Privacy Act, or CCPA, which went into effect January 1, 2020. The CCPA, among other things, creates new data privacy obligations for covered companies and provides new privacy rights to California residents, including the right to opt out of certain disclosures of their information. The CCPA also creates a private right of action with statutory damages for certain data breaches, thereby potentially increasing risks associated with a data breach. Although the law includes limited exceptions, including for “protected health information” maintained by a covered entity or business associate, it may regulate or impact our processing of personal information depending on the context. Further, the California Privacy Rights Act, or the CPRA, recently passed in California. The CPRA will impose additional data protection obligations on covered businesses, including additional consumer rights processes, limitations on data uses, new audit requirements for higher risk data, and opt outs for certain uses of sensitive data. It will also create a new California data protection agency authorized to issue substantive regulations and could result in increased privacy and information security enforcement. The majority of the provisions will go into effect on January 1, 2023, and additional compliance investment and potential business process changes may be required.

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Additionally, the EU also has laws and regulations dealing with the collection, use and processing of personal data obtained from individuals in the EU, namely the EU General Data Protection Regulation, or GDPR. These regulations are often more restrictive than those in the United States and may restrict transfers of personal data to the United States unless certain requirements are met. The GDPR provides that EU and European Economic Area, or EEA, member states may make their own further laws and regulations limiting the processing of genetic, biometric or health data, which could limit our ability to use and share personal data or could cause our costs to increase, and harm our business and financial condition. Failure to comply with these obligations could expose us to significant fines.

Human Capital Resources and Employees

We employ a growing and highly-skilled employee base across all employee functions and promote a culture focused on patient care in the treatment of VTE. Our key purpose is to serve and improve the quality of life of these patients, our patients. We believe that removing clot can have a profound impact on the lives of our patients over the short and long term, and that it is our responsibility to ensure as many of our patients as possible are treated safely, effectively and simply. We have implemented hiring and recruiting systems to carefully select professionals who share our beliefs and goals. We believe that extraordinary outcomes are possible when a group of people commit, together, to ideas and purposes bigger than themselves and bigger than business. We pursue our key purpose with a team of people who commit themselves to a cause and to each other.

Our human capital objectives include, as applicable, identifying, recruiting, retaining, incentivizing and integrating our existing and future employees. The principal purposes of our equity incentive plans are to attract, retain and motivate selected employees, consultants and directors through the granting of stock-based compensation awards and cash-based performance bonus awards.

As of December 31, 2020, we had 456 employees. None of our employees are subject to a collective bargaining agreement or represented by a trade or labor union. We consider our relationship with our employees to be good.

Available Information

We make our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports, available free of charge at our website as soon as reasonably practicable after they have been filed with the SEC. Our website address is www.inarimedical.com. Information on our website is not part of this report. The SEC maintains a website that contains the materials we file with the SEC at www.sec.gov.

Item 1A. Risk Factors.

RISK FACTORS

Investing in our common stock involves a high degree of risk. You should consider and read carefully all of the risks and uncertainties described below, as well as other information included in this Annual Report on Form 10-K, including our consolidated financial statements and related notes, before making an investment decision. The risks described below are not the only ones facing us. The occurrence of any of the following risks or additional risks and uncertainties not presently known to us or that we currently believe to be immaterial could materially and adversely affect our business, financial condition or results of operations. In such case, the trading price of our common stock could decline, and you may lose all or part of your original investment. This Annual Report on Form 10-K also contains forward-looking statements and estimates that involve risks and uncertainties. Our actual results could differ materially from those anticipated in the forward-looking statements as a result of specific factors, including the risks and uncertainties described below.

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A Risks Related to Our Business

We are an early-stage company with a history of significant net losses, we may incur operating losses in the future and we may not be able to sustain profitability.

We have incurred significant net losses since our original formation as Inceptus Newco1 Inc. in July 2011 and may incur operating losses in future years. For the years ended December 31, 2020, 2019 and 2018, we had a net income of $13.8 million and  net losses of $1.2 million and $10.2 million, respectively. We expect to incur additional losses in the future. As of December 31, 2020, we had an accumulated deficit of $27.4 million. To date, we have financed our operations primarily through equity and debt financings and from sales of our two products, the ClotTriever, for treatment of deep vein thrombosis, or DVT, and the FlowTriever, for treatment of pulmonary embolism, or PE. The losses and accumulated deficit have primarily been due to the substantial investments we have made to develop our products, costs related to our sales and marketing efforts, general research and development expenses, including costs related to clinical and regulatory initiatives to obtain marketing approval, and infrastructure improvements.

In addition, as a public company, we incur significant legal, accounting and other expenses. Accordingly, we expect to continue to incur operating losses for the foreseeable future and we cannot assure you that we will be able to sustain profitability in the future. Our failure to sustain profitability in the future will make it more difficult to finance our business and accomplish our strategic objectives, which would have a material adverse effect on our business, financial condition and results of operations and cause the market price of our common stock to decline.

A pandemic, epidemic or outbreak of an infectious disease in the United States or worldwide, including the outbreak of the novel strain of coronavirus disease, COVID-19, could adversely affect our business.

If a pandemic, epidemic or outbreak of an infectious disease occurs in the United States or worldwide, our business may be adversely affected. In December 2019, a novel strain of coronavirus, SARS-CoV-2, was identified in Wuhan, China. Since then, SARS-CoV-2, and the resulting disease, COVID-19, has spread to most countries, including all 50 states in the United States. In response to the pandemic, governmental authorities recommended, and in certain cases required, that elective, specialty and other procedures and appointments be suspended or canceled to avoid non-essential patient exposure to medical environments and potential infection with COVID-19 and to focus limited resources and personnel capacity toward the treatment of COVID-19 patients. In addition, since March 2020 numerous state and local governments have issued “stay at home” orders, some with tiered restrictions based on a region’s ICU availability. Such orders or restrictions resulted in reduced operations at our headquarters (including our manufacturing facility), work stoppages, slowdowns and delays, travel restrictions and cancellation of events. These orders and restrictions significantly decreased the number of procedures performed using our products during restricted periods, including March and April 2020 and early 2021, and otherwise negatively impacted our business, financial condition and results of operations, including new customer procurement and onboarding. We believe the COVID-19 pandemic has also negatively impacted the number of DVT and PE diagnoses as hospitals focus on COVID-19 and as patients postpone healthcare visits and treatments.

Decreases in procedures have been most prevalent in regions experiencing significant outbreaks. These measures and challenges will likely continue for the duration of the pandemic, which is uncertain, and will continue to significantly reduce our revenue and negatively impact our business, financial condition and results of operations while the pandemic continues. Further, once the pandemic subsides, we anticipate there will be a substantial backlog of patients seeking appointments with physicians and surgeries to be performed at hospitals and ambulatory surgery centers relating to a variety of medical conditions, and as a result, patients seeking procedures performed using our products, particularly the ClotTriever, will have to navigate limited provider capacity. We believe this limited provider, hospital and ambulatory surgery center capacity could have a significant adverse effect on our business, financial condition and results of operations following the end of the pandemic.

Other disruptions or potential disruptions include restrictions on the ability of our sales representatives and other personnel to travel and access customers for training and case support; inability of our suppliers to manufacture components and parts and to deliver these to us on a timely basis, or at all; disruptions in our production schedule and ability to manufacture and assemble products; inventory shortages or obsolescence; delays in actions of regulatory bodies; delays in clinical trials and studies; diversion of or limitations on employee resources that would otherwise be focused on the operations of our business, including because of sickness of employees or their families or the desire of employees to avoid contact with groups of people; delays in growing or reductions in

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our sales organization, including through delays in hiring, lay-offs, furloughs or other losses of sales representatives; restrictions in our ability to ship our products to customers; business adjustments or disruptions of certain third parties, including suppliers, medical institutions and clinical investigators with whom we conduct business; negative impact on our customers’ credit profiles, which may adversely impact our future collection experience; and additional government requirements or other incremental mitigation efforts that may further impact our or our suppliers’ capacity to manufacture our products. The extent to which the COVID-19 pandemic impacts our business will depend on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity and spread of COVID-19 and the actions to contain COVID-19 or treat its impact, among others.

While the potential economic impact brought by and the duration of any pandemic, epidemic or outbreak of an infectious disease, including COVID-19, may be difficult to assess or predict, the widespread COVID-19 pandemic has resulted in, and may in the future result in, significant disruption and volatility of global financial markets, reducing our ability to access capital, which could in the future negatively affect our liquidity. In addition, a recession or market correction resulting from the spread of an infectious disease, including COVID-19, could materially affect our business. Such economic recession could have a material adverse effect on our long-term business as hospitals curtail and reduce capital and overall spending. In addition, the current pandemic resulted in, and may continue to result in, significant job losses and reductions in disposable incomes. If patients are unable to obtain or maintain health insurance policies, this may significantly impact their ability to pay for the procedures utilizing our products, further negatively impacting our business, financial condition and results of operations. To the extent the COVID-19 pandemic adversely affects our business and financial results, it may also have the effect of heightening many of the other risks described in this “Risk Factors” section.

Our revenue is currently generated from the sales of our two products and we are therefore highly dependent on the success of those products. We have limited commercial sales experience regarding our products, which makes it difficult to evaluate our current business, predict our future prospects and forecast our financial performance and growth.

We began commercializing our products in the United States in 2017 and therefore do not have a long history operating as a commercial company. Over the next several years, we expect to continue to devote a substantial amount of resources to expand our commercialization efforts, drive increased adoption of our products and continue to develop new and improved products. Our limited commercialization experience and limited number of approved or cleared products make it difficult to evaluate our current business and predict our future prospects. These factors also make it difficult for us to forecast our future financial performance and growth, and such forecasts are subject to a number of uncertainties, including our ability to successfully complete preclinical studies and clinical trials and obtain FDA pre-market approval for future planned products or changes to existing products.

To date, all of our revenue has been derived, and we expect it to continue to be substantially derived, from sales of our ClotTriever and FlowTriever. We believe these products have the potential to become the standard of care for the two diseases that comprise venous thromboembolism, or VTE, namely DVT and PE. Physician awareness of, and experience with, our products is currently limited. As a result, our products have limited product and brand recognition within the medical industry for the treatment of VTE. The relative novelty of our products, together with our limited commercialization experience, makes it difficult to evaluate our current business and predict our future prospects. A number of factors, including some outside of our control, may contribute to fluctuations in our financial results, including:

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It is therefore difficult to predict our future financial performance and growth, and such forecasts are inherently limited and subject to a number of uncertainties. If our assumptions regarding the risks and uncertainties we face, which we use to plan our business, are incorrect or change due to circumstances in our business or our markets, or if we do not address these risks successfully, our operating and financial results could differ materially from our expectations and our business could suffer.

In addition, because we devote substantially all of our resources to our products and rely on our products as our sole source of revenue, any factors that negatively impact our products or result in a decrease in sales of products, could have a material adverse effect on our business, financial condition and results of operations.

Our business is dependent upon the broad adoption of our products and catheter-based thrombectomy procedures by hospitals, physicians and patients.

To date, a substantial majority of our product sales and revenue have been derived from a limited number of hospitals. Our future growth and profitability largely depend on our ability to increase physician and patient awareness of our products and on the willingness of physicians and hospitals to adopt our products and conduct catheter-based thrombectomy procedures for treatment of VTE. Physicians may not adopt our products unless they are able to determine, based on experience, clinical data, medical society recommendations and other analyses, that our products provide a safe and effective treatment alternative for VTE. Even if we are able to raise awareness among physicians, they may be slow in changing their medical treatment practices and may be hesitant to select our products or conduct catheter-based thrombectomy procedures for a variety of reasons, including:

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To effectively market and sell our products, we will need to educate the medical community about the safety, efficacy, necessity and efficiency of our products and about the patient population that would potentially benefit from a catheter-based thrombectomy procedure using one of our products. We focus our sales, marketing and education efforts primarily on our treating physicians, including interventional cardiologists, interventional radiologists and vascular surgeons, and also aim to educate and inform referring physicians, such as vascular surgeons, pulmonologists, radiologists, general practitioners and administrators regarding our products and the potential patient population. However, we cannot assure you that we will achieve broad education or market acceptance among these physicians. For example, if diagnosing physicians that serve as the primary point of contact for patients are not made aware of our products or catheter-based thrombectomy procedures, they may not refer patients to physicians for treatment using our products, and those patients may be treated with alternative procedures or treatments, such as anticoagulants alone or thrombolytic drugs. In addition, some physicians may choose to utilize our products on only a subset of their total patient population or may not adopt our products at all. If we are not able to effectively demonstrate that our products and catheter-based thrombectomy procedures are beneficial for a broad range of patients, adoption of our products will be limited and may not occur as rapidly as we anticipate or at all, which would have a material adverse effect on our business, financial condition and results of operations. We cannot assure you that our products will achieve broad market acceptance among hospitals, physicians and patients. Any failure of our products to satisfy demand or to achieve meaningful market acceptance and penetration will harm our future prospects and have a material adverse effect on our business, financial condition and results of operations.

Adoption of our ClotTriever and FlowTriever products requires approval by hospital value analysis committees, group purchasing organizations and integrated delivery networks, or the staff of hospitals or health systems.

In most cases, before physicians can use our products for the first time, our products must be approved for use by hospital value analysis committees, group purchasing organizations and integrated delivery networks, or the staff of hospitals or health systems. Following such approval, we may be required to enter into a purchase contract. Such approvals or requirements to enter into a purchase contract could deter or delay the use of our products by physicians. We cannot provide assurance that our efforts to obtain such approvals, enter into purchase contracts, or generate adoption will be successful or increase the use of our products, and if we are not successful, it could have a material adverse effect on our business, financial condition and results of operations.

Adoption of our ClotTriever and FlowTriever products depends upon appropriate physician training, practice and patient selection.

The success of our products depends in part on the skill of the physician performing the catheter-based thrombectomy procedures and on their adherence to our stated patient selection criteria and proper techniques that we provide in training sessions. For example, we train physicians to ensure correct use of our products; however, physicians rely on their previous medical training and experience when performing catheter-based thrombectomy procedures, and we cannot guarantee that all such physicians will have the necessary skills or experience to safely and effectively perform these procedures. We do not control which physicians perform these procedures or how much training they receive, and physicians who have not completed our training sessions may nonetheless attempt to perform catheter-based thrombectomy procedures with our products. In addition, a perception by physicians that our products are difficult to use may negatively impact adoption. If physicians perform these procedures in a manner that is inconsistent with our labeled indications, with components that are not our products, with patients who are not indicated for treatment with our products or without adhering to or completing our training sessions, the patient outcomes may be negative or inconsistent with the outcomes achieved in our clinical trials. This could negatively impact the perception of patient benefits and safety associated with our products and limit adoption of our products and catheter-based thrombectomy procedures generally, which would have a material adverse effect on our business, financial condition and results of operations.

Adoption of our ClotTriever and FlowTriever products depends upon positive clinical data, and the safety and efficacy of our products are not yet supported by long-term clinical data, which could limit sales, and our products might therefore prove to be less safe or effective than initially thought.

The rate of adoption and sales of our products is heavily influenced by clinical data. Currently, the primary clinical data regarding the safety and effectiveness of our products is limited to our FlowTriever Pulmonary Embolectomy Clinical Study, or FLARE study, which was a prospective, multicenter, single-arm study to evaluate

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the safety and effectiveness of our first-generation FlowTriever for use in the removal of clot from the pulmonary arteries in the treatment of 106 patients with acute intermediate-risk PE. Other studies have been conducted examining the safety, efficacy and feasibility of treatment using the FlowTriever. No clinical trials or studies have been completed using the ClotTriever. We are currently enrolling our ClotTriever Outcomes, or CLOUT, and FlowTriever All-Comer Registry for Patient Safety and Hemodynamics, or FLASH, registries, each of which is intended to evaluate and assess real-world patient outcomes in up to 500 patients. We plan to conduct additional clinical trials to help drive increased awareness and adoption of our products with existing and new customers. Historical clinical results are not necessarily predictive of future clinical results, and we cannot assure you that the results reported in these registries will be consistent with, or better than, currently available clinical data. Moreover, the outcomes and updates resulting from these registries, including interim results, may be compared to the results of other products and treatments for DVT or PE, and if the comparisons are not favorable, it may limit the adoption of our products. In addition, our competitors and other third parties may also conduct clinical trials of our products without our participation. Unfavorable or inconsistent clinical data from existing or future clinical trials conducted by us, our competitors or other third parties, the interpretation of our clinical data or findings of new or more frequent adverse events, could subject us to mandatory or voluntary product recalls, suspension or withdrawal of FDA or other governmental clearance or approval, significant legal liability or harm to our business reputation and could have a material adverse effect on our business, financial condition and results of operations.

Our products will be adopted and compete, in part, based on long-term data regarding patient outcomes and the risk of our products relative to other treatment options. The long-term clinical outcomes of catheter-based thrombectomy procedures with our products are not known and, due to the novelty of our products, there is no long-term data regarding patient outcomes beyond our current clinical trials. The results of short-term clinical experience of our products do not necessarily predict long-term clinical outcomes. We believe that physicians will compare the rates of long-term clinical outcomes for procedures using our products against alternative procedures and treatment options. If the long-term data do not meet physicians’ expectations, or if long-term data indicate that our products are not as safe or effective as other treatment options, or as current short-term data would suggest, our products may not become widely adopted, physicians may recommend alternative treatments for their patients, which will negatively affect our business, financial condition and results of operations.

We have limited experience in training and marketing and selling our products and we may provide inadequate training, fail to increase our sales and marketing capabilities or fail to develop broad brand awareness in a cost effective manner.

We have limited experience marketing and selling our products. We currently rely on our direct sales force to sell our products in targeted geographic regions and territories, and any failure to maintain and grow our direct sales force could harm our business. The members of our direct sales force are trained and possess technical expertise, which we believe is critical in driving the awareness and adoption of our products. The members of our U.S. sales force are at-will employees. The loss of these personnel to competitors, or otherwise, could materially harm our business. If we are unable to retain our direct sales force personnel or replace them with individuals of equivalent expertise and qualifications, or if we are unable to successfully instill such expertise in replacement personnel, our product sales, revenue and results of operations could be materially harmed.

In order to generate future growth, we plan to continue to significantly expand and leverage our commercial infrastructure to increase our customer base and increase awareness and adoption by existing customers to drive our growth. Identifying and recruiting qualified sales and marketing professionals and training them on our products and catheter-based thrombectomy procedures in the venous system, on applicable federal and state laws and regulations and on our internal policies and procedures requires significant time, expense and attention. It can take several months or more before a sales representative is fully trained and productive. Our sales force may subject us to higher fixed costs than those of companies with competing products or treatments, such as thrombolytic drugs, that can utilize independent third parties, placing us at a competitive disadvantage. Our business may be harmed if our efforts to expand and train our sales force do not generate a corresponding increase in product sales and revenue, and our higher fixed costs may slow our ability to reduce costs in the face of a sudden decline in demand for our products. Any failure to hire, develop and retain talented sales personnel, to achieve desired productivity levels in a reasonable period of time or timely reduce fixed costs, could have material adverse effect on our business, financial condition and results of operations.

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Our ability to increase our customer base and achieve broader market acceptance of our products will depend, to a significant extent, on our ability to expand our sales and marketing and educational efforts. We plan to dedicate significant resources to our sales and marketing and educational programs. Our business may be harmed if these efforts and expenditures do not generate a corresponding increase in revenue. In addition, we believe that developing and maintaining broad awareness of our brand in a cost effective manner is critical to achieving broad acceptance of our products and reaching new physicians, hospitals and patients. Brand promotion activities may not generate hospital or physician awareness or increase revenue, and even if they do, any increase in revenue may not offset the costs and expenses we incur in building our brand. If we fail to successfully promote, maintain and protect our brand, we may fail to attract or retain the market acceptance necessary to realize a sufficient return on our brand building efforts, or to achieve the level of brand awareness that is critical for broad adoption of our products.

We manufacture and sell products that are used in a limited number of procedures and there is a limited total addressable market for our products. The sizes of the markets for our current products have not been established with precision, and may be smaller than we estimate.

In the United States, approximately 668,000 patients are diagnosed with DVT and approximately 400,000 patients are diagnosed with PE each year. Of these, we estimate that approximately 242,000 patients present with DVT in the iliofemoral region and 200,000 patients have PE severe enough to cause right heart strain. Historically, we estimate that only 32% of such DVT patients and 10% of such PE patients have received treatment for these conditions beyond conservative medical management using anticoagulants. However, based on FDA clearance and indications of use for our products, we believe that the approximately 242,000 DVT patients and 200,000 PE patients per year are potential candidates for treatment using our products. The total addressable market for our products is subject to change from year to year and may be further limited by FDA restrictions or more narrowly defined indications, any of which could have a material adverse effect on our business, financial condition and results of operations.

Our estimates of the annual total addressable markets for our current products are based on a number of internal and third-party estimates, including, without limitation, the number of patients with DVT and PE treatable by our products and the assumed prices at which we can sell our products in markets that have not yet been fully established. While we believe our assumptions and the data underlying our estimates are reasonable, these assumptions and estimates may not be correct and the conditions supporting our assumptions or estimates may change at any time, thereby reducing the predictive accuracy of these underlying factors. As a result, our estimates of the annual total addressable market for our current products may prove to be incorrect. If the actual number of patients who would benefit from our solution, the price at which we can sell our products, or the annual total addressable market for our products is smaller than we have estimated, it may impair our sales growth and negatively affect our business, financial condition and results of operations.

Catheter-based treatment for PE is subject to a Medicare National Coverage Determination that may restrict Medicare coverage for procedures using our FlowTriever product for the treatment of PE.

In 1983, the Centers for Medicare and Medicaid Services, or CMS, adopted a National Coverage Determination, or NCD, for Transvenous Pulmonary Embolectomy, NCD 240.6. At that time, NCD 240.6 deemed catheter-based pulmonary embolectomy to be experimental and non-covered by Medicare. There is currently uncertainty as to whether NCD 240.6 may apply to procedures using our FlowTriever product to treat PE. If NCD 240.6 is determined to exclude from Medicare coverage procedures that use our FlowTriever for the treatment of PE, there would be a material adverse effect on our business.

We understand that various medical societies, including the Society for Cardiovascular Angiography and Interventions, the Society for Interventional Radiology, and the Society for Vascular Medicine, as well as the American College of Cardiology, have requested that CMS remove NCD 240.6. We can give no assurance that NCD 240.6 will be removed or if so, what the timing will be. Further, CMS may elect to retain NCD 240.6 and Medicate Administrative Contractors, or MACs, could begin to deny coverage for procedures using our FlowTriever product for the treatment of PE, which could result in claim denials and overpayments for our customers and significantly impact demand for the FlowTriever, which would have a material adverse effect on our business, financial condition and results of operations.

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We may not be able to maintain adequate levels of third-party coverage and reimbursement, and third parties may rescind or modify their coverage or delay payments related to our products.

We derive our revenue from sales of our ClotTriever and FlowTriever products to hospitals and other medical centers, which typically bill all or a portion of the costs and fees associated with our products to various third-party payors, including Medicare, Medicaid, private commercial insurance companies, health maintenance organizations and other healthcare-related organizations, and then bill patients for any applicable deductibles or co-payments. For example, we sell our products to hospitals that purchase our products for use in catheter-based thrombectomy procedures and do not sell our products to commercial payors. As a result, access to adequate coverage and reimbursement for our products by third-party payors is essential to the acceptance and adoption of our products.

Coverage and reimbursement by governmental and third-party payors may depend upon a number of factors, including the determination that the product or service and its use or administration for a particular patient is:

Our customers typically bill third-party payors for the costs and fees associated with the procedures in which our products are used. Because there is often no separate reimbursement for supplies used in surgical procedures, the additional cost associated with the use of our products can affect the profit margin of the hospital or surgery center where the procedure is performed. Some of our target customers may be unwilling to adopt our products in light of potential additional associated cost. In addition, customers that perform the procedure may be subject to reimbursement claim denials upon submission of the claim. Customers may also be subject to recovery of overpayments if a payor makes payment for the claim and subsequently determines that the payor’s coding, billing or coverage policies were not followed. These events, or any other decline in the amount payors are willing to reimburse our customers, could make it difficult for existing customers to continue using or to adopt our products and could create additional pricing pressure for us. If we are forced to lower the price we charge for our products, our gross margins will decrease, which could have a material adverse effect on our business, financial condition and results of operations and impair our ability to grow our business.

Third-party payors, whether foreign or domestic, or governmental or commercial, are developing increasingly sophisticated methods of controlling healthcare costs. In addition, no uniform policy of coverage and reimbursement for procedures using our products exists among third-party payors. Therefore, coverage and reimbursement for procedures using our products can differ significantly from payor to payor. Obtaining coverage and reimbursement can be a time-consuming process that could require us to provide supporting scientific, clinical and cost-effectiveness data for the use of our products. We may not be able to provide data sufficient to satisfy governmental and third-party payors that procedures using our products should be covered and reimbursed.

Payors continually review new and existing technologies for possible coverage and can, without notice, deny or reverse coverage for new or existing products and procedures. There can be no assurance that third-party payor policies will provide coverage for procedures in which our products are used. For instance, if NCD 240.6 is determined to exclude Medicare coverage for procedures using FlowTriever for the treatment of PE, there would be a material adverse effect on our business, financial condition and results of operations. If we are not successful in reversing existing non-coverage policies, or if third-party payors that currently cover or reimburse our products and related procedures reverse or limit their coverage in the future, or if other third-party payors issue similar policies, this could have a material adverse effect on our business.

Further, we believe that future coverage and reimbursement may be subject to increased restrictions, such as additional prior authorization requirements, both in the United States and in international markets. If Medicare no longer covers any of our products, there would be a material adverse effect on our business, financial condition and

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results of operations. In addition, Medicare Administrative Contractors could issue a local coverage determination decision that could restrict the patients eligible for the treatment with our products or in another manner unfavorable to our business. Third-party coverage and reimbursement for procedures using our products or any of our products in development for which we may receive regulatory clearance or approval may not be available or adequate in either the United States or international markets. Further, other VTE treatments, such as thrombolytic drugs, may be more widely covered or subject to different co-pay policies and requirements, which could impact demand for our products. If hospital, physician and/or patient demand for our products is adversely affected by third-party reimbursement policies and decisions, it could have a material adverse effect on our business, financial condition and results of operations.

The market for our products is highly competitive. Our competitors may have longer operating histories, more established products and greater resources than we do, and may be able to develop or market treatments that are safer, more effective or gain greater acceptance in the marketplace than our products.

The medical device industry is highly competitive, subject to rapid change and significantly affected by the introduction of new products and technologies and other activities of industry participants. We compete with manufacturers of thrombolytic drugs, such as Roche, and with medical device companies that manufacture thrombectomy devices and systems used to treat vascular blockages. These systems include water jets, ultrasonic acoustic field generators, aspirators, catheters and others. Our primary medical device competitors are Boston Scientific Corporation, Penumbra, AngioDynamics, Teleflex, Shandong Weigao and smaller companies that have single products or a limited range of products. Some competitors offer products for mechanical and catheter-based thrombectomy procedures, many of which are existing products for the arterial system that have been retrofitted or adjusted for the venous system. These competing technologies, other products that are in current clinical trials, new drugs or additional indications for existing drugs could demonstrate better safety, effectiveness, clinical results, lower costs or greater physician and market acceptance than our products.

We compete, or may compete in the future, against other companies which have longer, more established operating histories and significantly greater financial, technical, marketing, sales, distribution and other resources, which may prevent us from achieving significant market penetration or improved operating results. These companies may enjoy several competitive advantages, including:

One of the major hurdles to adoption of our products will be overcoming established treatment patterns, which will require education of physicians and supportive clinical data. However, because of the size of the market opportunity for the treatment of DVT and PE, we believe current and potential future competitors will dedicate significant resources to aggressively promote their products or develop new products or treatments. New treatment options may be developed that could compete more effectively with our products due to the prevalence of VTE and the research and technological progress that exist within the market.

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We have limited experience manufacturing our products in commercial quantities and we face a number of manufacturing risks that may adversely affect our manufacturing abilities.

Our business strategy depends on our ability to manufacture our current and future products in sufficient quantities and on a timely basis to meet customer demand, while adhering to product quality standards, complying with regulatory quality system requirements and managing manufacturing costs. We have a facility located in Irvine, California, where we manufacture, assemble, inspect, test, package and ship our products. We currently produce our ClotTriever and FlowTriever products at this facility, and we do not have additional facilities. If this facility suffers damage, or a force majeure event, this could materially impact our ability to operate.

We are also subject to numerous other risks relating to our manufacturing capabilities, including:

These risks are likely to be exacerbated by our limited experience with our current products and manufacturing processes. As demand for our products increases, we will have to invest additional resources to purchase components, sub-assemblies and materials, hire and train employees and enhance and expand our manufacturing processes and capabilities, including through additional manufacturing facilities. If we fail to increase our production capacity efficiently, we may not be able to fill customer orders on a timely basis, our sales may not increase in line with our expectations and our operating margins could fluctuate or decline. In addition, although some future products may share product features, components, sub-assemblies and materials with our existing products, the manufacture of these products may require modification of our current production processes or unique production processes, the hiring of specialized employees, the identification of new suppliers for specific components, sub-assemblies and materials or the development of new manufacturing technologies. It may not be possible for us to manufacture these products at a cost or in quantities sufficient to make these products commercially viable or to maintain current operating margins, all of which could have a material adverse effect on our business, financial condition and results of operations.

We depend on a limited number of single source suppliers to manufacture our components, sub-assemblies and materials, which makes us vulnerable to supply shortages and price fluctuations.

We rely on single source suppliers for the vast majority of components, sub-assemblies and materials for our products, as well as to sterilize our final assembled products before they are shipped to customers. These components, sub-assemblies and materials are critical and, for certain items, there are relatively few alternative sources of supply. These single source suppliers may be unwilling or unable to supply the necessary materials and components or manufacture and assemble our products reliably and at the levels we anticipate or that are required by the market. While our suppliers have generally met our demand for their products and services on a timely basis in the past, we cannot guarantee that they will in the future be able to meet our demand for their products, either because of acts of nature, the nature of our agreements with those suppliers or our relative importance to them as a customer, and our suppliers may decide in the future to discontinue or reduce the level of business they conduct with us.

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We have not qualified or obtained necessary regulatory approvals for additional suppliers for most of these components, sub-assemblies and materials, and we do not carry a significant inventory of these items. While we believe that alternative sources of supply or sterilization may be available, we cannot be certain whether they will be available if and when we need them, or that any alternative suppliers or providers would be able to provide the quantity and quality of components, materials and sterilization that we would need to manufacture and ship our products if our existing suppliers and providers were unable to satisfy our requirements. To utilize other sources, we would need to identify and qualify new providers to our quality standards and obtain any additional regulatory approvals required to change providers, which could result in manufacturing delays and increase our expenses.

Our dependence on third-parties subjects us to a number of risks that could impact our ability to manufacture our products and harm our business, including:

Although we require our third-party suppliers and providers to supply us with components and services that meet our specifications and other applicable legal and regulatory requirements in our agreements and contracts, and we perform incoming inspection, testing or other acceptance activities to ensure the components meet our requirements, there is a risk that these third parties will not always act consistent with our best interests, and may not always supply components or provide services that meet our requirements or in a timely manner.

If we fail to comply with our obligations in our intellectual property licenses, including our agreements with Inceptus Medical LLC, we could lose license rights that are important to our business.

We are a party to an amended and restated technology agreement with Inceptus Medical, LLC, or Inceptus, under which Inceptus has granted us a worldwide, exclusive (even as to Inceptus), royalty-free license to certain of its intellectual property related to the braiding technologies underlying its patent in the defined field of use for the treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature. In addition, we are party to a sublicense agreement with Inceptus, pursuant to which Inceptus has granted us a non-transferable, worldwide, exclusive sublicense to its patent rights related to the tubular braiding for the non-surgical removal of clots and, with respect to our ClotTriever, treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature, which rights were originally granted to Inceptus pursuant to an intellectual property license agreement with Drexel University. Both of our products use braiding technology. For example, our ClotTriever uses the sublicensed tubular braiding technology for the clot collection bag, which provides embolic protection and helps to secure and remove clot during procedures to treat DVT.

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These agreements impose, and we expect that any future license agreements will impose, certain diligence, royalty and other obligations on us. Pursuant to the sublicense agreement with Inceptus, we are obligated to pay a quarterly royalty, calculated as a low single-digit percentage of net sales of implantable and non-implantable licensed products, which includes our ClotTriever product, with a minimum quarterly payment amount of $1,500. Additionally, we are obligated to pay Inceptus a small administration fee within 30 days of the beginning of each quarter.

If we fail to comply with the terms and obligations of our intellectual property licenses, including the payment obligations described above, our rights may be reduced or terminated, in which event we may not be able to develop and market any product that is covered by our intellectual property licenses. In addition, Inceptus may terminate the sublicense agreement if we cease bona fide development and commercialization of all licensed products for a period of six consecutive months. The sublicense agreement with Inceptus automatically terminates upon the termination of the intellectual property license agreement with Drexel University, and we cannot guarantee Inceptus’ compliance with the terms of such intellectual property license agreement. In the event of termination of the intellectual property license agreement with Drexel University, Drexel University will, in good faith, grant to us a direct license on terms no less favorable than those given to Inceptus by Drexel University by Inceptus. Termination of this license for failure to comply with such obligations or for other reasons, or reduction or elimination of our licensed rights under it or any other license, may result in our having to negotiate new or reinstated licenses on less favorable terms or our not having sufficient intellectual property rights to operate our business or cause us to enter into a new license for a similar intellectual property or braiding technology. The occurrence of such events could materially harm our business and financial condition.

The risks described elsewhere pertaining to our intellectual property rights also apply to the intellectual property rights that we in-license and sublicense, and any failure by us or our licensors, including Inceptus and Drexel University, to obtain, maintain, defend and enforce these rights could have a material adverse effect on our business. In some cases, including in the case of the intellectual property licensed to us by Inceptus and Drexel University, we do not have control over the prosecution, maintenance or enforcement of the intellectual property that we license or sublicense, and may not have sufficient ability to provide input into the prosecution, maintenance and defense process with respect to such intellectual property, and our licensors may fail to take the steps that we believe are necessary or desirable in order to obtain, maintain, defend and enforce the licensed intellectual property.

ClotTriever and FlowTriever involve risks and have contraindications, which may limit adoption.

Risks of catheter-based thrombectomy procedures with our products include the risks that are common to endovascular procedures, including perforation, dissection, embolization, bleeding, infection and nerve injury. DVT procedures also include the additional risks of causing PE. We are aware of certain characteristics and features of catheter-based thrombectomy procedures that may prevent widespread market adoption, including the fact that physicians would need to adopt and learn a new procedure, and that a degree of training for physicians will be required to enable them to effectively operate our products.

Our current products are contraindicated, and therefore should not be used, in certain circumstances for certain patients. Our ClotTriever is contraindicated for use without anticoagulation; use in the cerebral, carotid or coronary vasculature; use in the pulmonary arteries; use in endarterectomy procedures or vessel dilation; removal of fibrous, adherent or calcified material; use in vessels less than six millimeters in diameter; and use with power injectors. Our FlowTriever is contraindicated for use in the cerebral, carotid or coronary vasculature; use in endarterectomy procedures or vessel dilation; removal of fibrous, adherent or calcified material; use with power injectors; and use in vessels less than six millimeters in diameter, with the largest 24 French catheter contraindicated for use in vessels less than eight millimeters in diameter.

Our results of operations could be materially harmed if we are unable to accurately forecast customer demand for our products and manage our inventory.

We seek to maintain sufficient levels of inventory in order to protect ourselves from supply interruptions, but keep limited components, sub-assemblies, materials and finished products on hand. To ensure adequate inventory supply and manage our operations with our third-party suppliers, we forecast anticipated materials requirements and demand for our products in order to predict inventory needs and then place orders with our suppliers based on these

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predictions. Our ability to accurately forecast demand for our products could be negatively affected by many factors, including our limited historical commercial experience, rapid growth, failure to accurately manage our expansion strategy, product introductions by competitors, an increase or decrease in customer demand for our products, our failure to accurately forecast customer acceptance and adoption of new products, unanticipated changes in general market conditions or regulatory matters and weakening of economic conditions or consumer confidence in future economic conditions.

Inventory levels in excess of customer demand may result in a portion of our inventory becoming obsolete or expiring, as well as inventory write-downs or write-offs, which would negatively impact our gross margins and impair the strength of our brand. Conversely, if we underestimate customer demand for our products or our own requirements for components, sub-assemblies and materials, our third-party suppliers may not be able to deliver components, sub-assemblies and materials to meet our requirements, which could result in inadequate inventory levels or interruptions, delays or cancellations of deliveries to our customers, any of which would damage our reputation, customer relationships and business. In addition, several components, sub-assemblies and materials incorporated into our products require lengthy order lead times, and additional supplies or materials or additional manufacturing capacity may not be available when required on terms that are acceptable to us, or at all, and our third-party suppliers may not be able to allocate sufficient capacity in order to meet our increased requirements, any of which could have an adverse effect on our ability to meet customer demand for our products and our results of operations.

Our quarterly and annual results may fluctuate significantly and may not fully reflect the underlying performance of our business.

Our quarterly and annual results of operations, including our revenue, profitability and cash flow, may vary significantly in the future, and period-to-period comparisons of our operating results may not be meaningful. Accordingly, the results of any one quarter or period should not be relied upon as an indication of future performance. Our quarterly and annual financial results may fluctuate as a result of a variety of factors, many of which are outside our control and, as a result, may not fully reflect the underlying performance of our business. Fluctuations in quarterly and annual results may decrease the value of our common stock. Because our quarterly results may fluctuate, period-to-period comparisons may not be the best indication of the underlying results of our business and should only be relied upon as one factor in determining how our business is performing. These fluctuations may occur due to a variety of factors, many of which are outside of our control, including, but not limited to:

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Our long-term growth depends on our ability to enhance our products, expand our indications and develop and commercialize additional products in a timely manner. If we fail to identify, acquire and develop other products, we may be unable to grow our business.

The market for our products is highly competitive, dynamic, and marked by rapid and substantial technological development and product innovation. New entrants or existing competitors could attempt to develop products that compete directly with ours. Demand for our products and future related products could be diminished by equivalent or superior products and technologies offered by competitors. If we are unable to innovate successfully, our existing products could become obsolete and our revenue would decline as our customers purchase our competitors’ products. Developing our current and new products is expensive and time-consuming and could divert management’s attention away from our core business. The success of any new product offering or product enhancements to our solution will depend on several factors, including our ability to:

If we are unable to develop or improve products, applications or features due to constraints, such as insufficient cash resources, high employee turnover, inability to hire personnel with sufficient technical skills or a lack of other research and development resources, we may not be able to maintain our competitive position compared to other companies. Furthermore, many of our competitors devote a considerably greater amount of funds to their research and development programs than we do, and those that do not may be acquired by larger companies that would allocate greater resources to research and development programs. Our failure or inability to devote adequate research and development resources or compete effectively with the research and development programs of our competitors could harm our business.

In addition, we may choose to focus our efforts and resources on potential products or indications that ultimately prove to be unsuccessful, or to license or purchase a marketed product that does not meet our financial

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expectations. As a result, we may fail to capitalize on viable commercial products or profitable market opportunities, be required to forego or delay pursuit of opportunities with other potential products or other diseases that may later prove to have greater commercial potential, or relinquish valuable rights to such potential products through collaboration, licensing or other royalty arrangements in cases in which it would have been advantageous for us to retain sole development and commercialization rights, which could adversely impact our business, financial condition and results of operations.

Changes in public health insurance coverage and government reimbursement rates for our products could affect the adoption of our products and our future revenue.

The federal government is considering ways to change, and has changed, the manner in which healthcare services are paid for in the United States. Individual states may also enact legislation that impacts Medicaid payments to hospitals and physicians. In addition, the United States Department of Health and Human Services Centers for Medicare and Medicaid Services, or CMS, establishes Medicare payment levels for hospitals and physicians on an annual basis, which can increase or decrease payment to such entities. Internationally, medical reimbursement systems vary significantly from country to country, with some countries limiting medical centers’ spending through fixed budgets, regardless of levels of patient treatment, and other countries requiring application for, and approval of, government or third-party reimbursement. Even if we succeed in bringing our products to market in additional foreign countries, uncertainties regarding future healthcare policy, legislation and regulation, as well as private market practices, could affect our ability to sell our products in commercially acceptable quantities at acceptable prices.

Cost-containment efforts of our customers, purchasing groups and governmental organizations could have a material adverse effect on our sales and profitability. Consolidation in the healthcare industry or group purchasing organizations could lead to demands for price concessions, which may affect our ability to sell our products at prices necessary to support our current business strategies.

In an effort to reduce costs, many hospitals in the United States, including some of our customers, are members of Group Purchasing Organizations, or GPOs, and Integrated Delivery Networks, or IDNs. GPOs and IDNs negotiate pricing arrangements with medical device companies and distributors and then offer these negotiated prices to affiliated hospitals and other members. GPOs and IDNs typically award contracts on a category-by-category basis through a competitive bidding process. Bids are generally solicited from multiple providers with the intention of driving down pricing or reducing the number of vendors. Due to the highly competitive nature of the GPO and IDN contracting processes, we may not be able to obtain new, or maintain existing, contract positions with major GPOs and IDNs. Furthermore, the increasing leverage of organized buying groups may reduce market prices for our products, thereby reducing our revenue and margins.

While having a contract with a GPO or IDN for a given product category can facilitate sales to members of that GPO or IDN, such contract positions can offer no assurance that any level of sales will be achieved, as sales are typically made pursuant to individual purchase orders. Even when a provider is the sole contracted supplier of a GPO or IDN for a certain product category, members of the GPO or IDN are generally free to purchase from other suppliers. Furthermore, GPO and IDN contracts typically are terminable without cause by the GPO or IDN upon 60 to 90 days’ notice. Accordingly, the members of such groups may choose to purchase alternative products due to the price or quality offered by other companies, which could result in a decline in our revenue.

Healthcare costs have risen significantly over the past decade, which has resulted in or led to numerous cost reform initiatives by legislators, regulators and third-party payors. Cost reform has triggered a consolidation trend in the healthcare industry to aggregate purchasing power, which may create more requests for pricing concessions in the future. Additionally, GPOs, IDNs and large single accounts may continue to use their market power to consolidate purchasing decisions for hospitals. We expect that market demand, government regulation, third-party coverage and reimbursement policies and societal pressures will continue to change the healthcare industry worldwide, resulting in further business consolidations and alliances among our customers, which may exert further downward pressure on the prices of our products.

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We may not be able to achieve or maintain satisfactory pricing and margins for our products.

Manufacturers of medical devices have a history of price competition, and we can give no assurance that we will be able to achieve satisfactory prices for our current or any new products or maintain prices at the levels we have historically achieved. Any decline in the amount that payors reimburse our customers for our products could make it difficult for customers to continue using, or to adopt, our products and could create additional pricing pressure for us. If we are forced to lower the price we charge for our products, or if we add more components to our systems, our gross margins will decrease, which will adversely affect our ability to invest in and grow our business. If we are unable to maintain our prices, including during any international expansion, or if our costs increase and we are unable to offset such increase with an increase in our prices, our margins could erode. We will continue to be subject to significant pricing pressure, which could harm negatively affect our business, financial condition and results of operations.

We may be unable to manage the anticipated growth of our business.

In order to grow, we need to expand our sales personnel, manufacturing operations and general and administrative infrastructure. In addition to the need to scale our organization, future growth will impose significant added responsibilities on management, including the need to identify, recruit, train and integrate additional employees. Rapid expansion in personnel could mean that less experienced people manufacture, market and sell our products, which could result in inefficiencies and unanticipated costs, reduced quality and disruptions to our operations. In addition, rapid and significant growth may strain our administrative and operational infrastructure. Our ability to manage our business and growth will require us to continue to improve our operational, financial and management controls, reporting systems and procedures. If we are unable to manage our growth effectively, it may be difficult for us to execute our business strategy and our business could be harmed.

As demand for our products or any of our future products increases, we will need to continue to scale our capacity, expand customer service, billing and systems processes and enhance our internal quality assurance program. We cannot assure you that any increases in scale, related improvements and quality assurance will be successfully implemented or that appropriate personnel will be available to facilitate the growth of our business. Failure to implement necessary procedures, transition to new processes or hire the necessary personnel could result in higher costs of processing data or inability to meet increased demand, and may generally be disruptive to our business. If we encounter difficulty meeting market demand, quality standards or physician expectations, our reputation could be harmed and our business could suffer.

We may experience delays in production or an increase in costs if our single manufacturing facility is damaged or becomes inoperable, or if we are required to vacate our facility.

We currently maintain our research and development, manufacturing and administrative operations in a building located in Irvine, California, which is situated on or near earthquake fault lines. Our goal is to expand our manufacturing operations to include additional facilities, however, we do not currently have additional operational facilities. Should our building be significantly damaged or destroyed by natural or man-made disasters, such as earthquakes, fires or other events, it could take months to relocate or rebuild, during which time our employees may seek other positions, our research, development and manufacturing capabilities would cease or be delayed and our products may be unavailable. To the extent any additional facilities are available and operational at the time of such events, transitioning manufacturing capacity to offset the loss of our manufacturing facility in Irvine may not be possible or may not be cost effective.  Moreover, the use of a new facility or new manufacturing, quality control, or environmental control equipment or systems may require regulatory review and approval of the new facility prior to commencing full-scale production and commercialization. Because of the time required to register and/or authorize manufacturing in a new facility under FDA, state and non-U.S. regulatory requirements, we may not be able to resume production on a timely basis even if we are able to replace production capacity in the event that we lose our manufacturing capacity. While we maintain property and business interruption insurance, such insurance has limits and would only cover the cost of rebuilding and relocating and lost revenue, but not general damage or losses caused by earthquakes or losses we may suffer due to our products being replaced by competitors’ products. The inability to perform our research, development and manufacturing activities, combined with our limited inventory of materials and components and manufactured products, may cause physicians to discontinue using our products or harm our reputation, and we may be unable to reestablish relationships with such physicians in the future. Consequently, a

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catastrophic event at our facility could have a material adverse effect on our business, financial condition and results of operations.

Furthermore, we may be unable to renew our lease or find a new facility on commercially reasonable terms, or at all. If we were unable or unwilling to renew at the proposed rates, relocating our manufacturing facility would involve significant expense in connection with the movement and installation of key manufacturing equipment and any necessary recertification with regulatory bodies, and we cannot assure investors that such a move would not delay or otherwise adversely affect our manufacturing activities or operating results. If our manufacturing capabilities were impaired by our move, we may not be able to manufacture and ship our products in a timely manner, which would adversely impact our business, financial condition and results of operations.

We may experience disruptions to our business as a result of the relocation of our headquarters and general expansion of our operations.

We may experience disruptions as we continue to expand our operations and facilities and execute on our growth strategy. In October 2020, we entered into a lease agreement to move our headquarters to a larger space in Irvine, California.  The process of moving our business, opening new facilities and bringing operations online at new sites, including our research and development and manufacturing operations, is inherently complex and is not part of our day-to-day operations. The relocation and expansion of our headquarters and the opening of any additional new facilities cause significant disruption to our operations, divert management attention and resources and involve significant costs, all of which could have a material adverse effect on our business, financial condition and results of operations. The relocation of our headquarters and the opening of any new additional facilities with manufacturing operations will require the movement and/or installation of key manufacturing equipment and certification or recertification with applicable regulatory bodies, including the FDA. We can give no assurance that the relocation of our headquarters will be completed as planned or within the anticipated timeframe, or that we will fully realize the expected benefits of the relocation or any additional facilities that we seek to open.  

Performance issues, service interruptions or price increases by our shipping carriers could negatively affect our business, financial condition and results of operations and harm our reputation and the relationship between us and the hospitals we work with.

Expedited, reliable shipping is essential to our operations. We rely heavily on providers of transport services for reliable and secure point-to-point transport of our ClotTriever or FlowTriever products to our customers and for tracking of these shipments. Should a carrier encounter delivery performance issues such as loss, damage or destruction of any systems, it would be costly to replace such systems in a timely manner and such occurrences may damage our reputation and lead to decreased demand for our solution and increased cost and expense to our business. In addition, any significant increase in shipping rates could adversely affect our operating margins and results of operations. Similarly, strikes, severe weather, natural disasters or other service interruptions affecting delivery services we use would adversely affect our ability to process orders for our ClotTriever or FlowTriever products on a timely basis.

Our products may become obsolete in the future.

The medical device industry is characterized by rapid and significant change. There can be no assurance that other companies will not succeed in developing or marketing devices or products that are more effective than our products or that would render our products obsolete or noncompetitive. Additionally, new surgical procedures, medications and other therapies could be developed that replace or reduce the importance of our products. Accordingly, our success will depend in part on our ability to respond quickly to medical and other changes through the development and introduction of new products. Product development involves a high degree of risk, and there can be no assurance that our new product development efforts will result in any commercially successful products.

We provide a limited warranty for our products.

We provide a limited warranty that our products are free of material defects and conform to specifications, and offer to repair, replace or refund the purchase price of defective products. As a result, we bear the risk of potential

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warranty claims on our products. In the event that we attempt to recover some or all of the expenses associated with a warranty claim against us from our suppliers or vendors, we may not be successful in claiming recovery under any warranty or indemnity provided to us by such suppliers or vendors and any recovery from such vendor or supplier may not be adequate. In addition, warranty claims brought by our customers related to third-party components may arise after our ability to bring corresponding warranty claims against such suppliers expires, which could result in costs to us.

We may enter into collaborations, in-licensing arrangements, joint ventures, strategic alliances or partnerships with third-parties that may not result in the development of commercially viable products or product improvements or the generation of significant future revenue.

In the ordinary course of our business, we may enter into collaborations, in-licensing arrangements, joint ventures, strategic alliances, partnerships or other arrangements to develop new products or product improvements and to pursue new markets. Proposing, negotiating and implementing collaborations, in-licensing arrangements, joint ventures, strategic alliances or partnerships may be a lengthy and complex process. Other companies, including those with substantially greater financial, marketing, sales, technology or other business resources, may compete with us for these opportunities or arrangements. We may not identify, secure, or complete any such transactions or arrangements in a timely manner, on a cost-effective basis, on acceptable terms or at all. We have limited institutional knowledge and experience with respect to these business development activities, and we may also not realize the anticipated benefits of any such transaction or arrangement. In particular, these collaborations may not result in the development of products that achieve commercial success or viable product improvements or result in significant revenue and could be terminated prior to developing any products.

Additionally, we may not be in a position to exercise sole decision making authority regarding the transaction or arrangement, which could create the potential risk of creating impasses on decisions, and our future collaborators may have economic or business interests or goals that are, or that may become, inconsistent with our business interests or goals. It is possible that conflicts may arise with our collaborators, such as conflicts concerning the achievement of performance milestones, or the interpretation of significant terms under any agreement, such as those related to financial obligations or the ownership or control of intellectual property developed during the collaboration. If any conflicts arise with any future collaborators, they may act in their self-interest, which may be adverse to our best interest, and they may breach their obligations to us. In addition, we may have limited control over the amount and timing of resources that any future collaborators devote to our or their future products.

Disputes between us and our collaborators may result in litigation or arbitration which would increase our expenses and divert the attention of our management. These arrangements may consume management time and resources to establish and maintain. Further, these transactions and arrangements will be contractual in nature and will generally be terminable under the terms of the applicable agreements and, in such event, we may not continue to have rights to the products relating to such transaction or arrangement or may need to purchase such rights at a premium. If we enter into in-bound intellectual property license agreements, we may not be able to fully protect the licensed intellectual property rights or maintain those licenses. Future licensors could retain the right to prosecute and defend the intellectual property rights licensed to us, in which case we would depend on the ability of our licensors to obtain, maintain and enforce intellectual property protection for the licensed intellectual property. These licensors may determine not to pursue litigation against other companies or may pursue such litigation less aggressively than we would. Further, entering into such license agreements could impose various diligence, commercialization, royalty or other obligations on us. Future licensors may allege that we have breached our license agreement with them, and accordingly seek to terminate our license, which could adversely affect our competitive business position and harm our business prospects.

The failure of ClotTriever or FlowTriever to meet patient expectations or the occurrence of adverse events from ClotTriever or FlowTriever could impair our financial performance.

Our future success depends in part upon patients having an experience with our products that meets their expectations in order to increase physician demand for our products as a result of positive feedback, social media and word-of-mouth. Patients may be dissatisfied if their expectations of the procedure and results, among other things, are not met. Despite what we believe to be the safety profile of our products, patients may experience adverse events such as venous dissection or puncture, embolization of clot, stroke, heart attack and death. If the

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results of catheter-based thrombectomy procedures with our products do not meet the expectations of the patients, or the patient experiences adverse events, it could discourage the patient and treating physician from referring our products to others. Dissatisfied patients may express negative opinions through social media. Any failure to meet patient expectations and any resulting negative publicity could harm our reputation and future sales.

We depend on our senior management team and the loss of one or more key employees or an inability to attract and retain highly skilled employees will negatively affect our business, financial condition and results of operations.

Our success depends largely on the continued services of key members of our executive management team and others in key management positions. For example, the services of William Hoffman, our Chief Executive Officer, Andrew Hykes, our Chief Operating Officer, Mitchell Hill, our Chief Financial Officer, and Dr. Thomas Tu, our Chief Medical Officer, are essential to driving adoption of our products, executing on our corporate strategy and ensuring the continued operations and integrity of financial reporting within our company. In addition, the services of our sales professionals are critical to driving the growth in sales of our products. Any of our employees may terminate their employment with us at any time. We do not currently maintain key person life insurance policies on any of our employees. If we lose one or more key employees, we may experience difficulties in competing effectively, developing our technologies and implementing our business strategy.

In addition, our research and development programs, clinical operations and sales efforts depend on our ability to attract and retain highly skilled engineers and sales professionals. We may not be able to attract or retain qualified engineers and sales professionals in the future due to the competition for qualified personnel. We have from time to time experienced, and we expect to continue to experience, difficulty in hiring and retaining employees with appropriate qualifications. Many of the companies with which we compete for experienced personnel have greater resources than we do. If we hire employees from competitors or other companies, their former employers may attempt to assert that these employees or we have breached legal obligations, resulting in a diversion of our time and resources and, potentially, damages.

In addition, job candidates and existing employees often consider the value of the stock awards they receive in connection with their employment. If the perceived benefits of our stock awards decline, either because we are a public company or for other reasons, it may harm our ability to recruit and retain highly skilled employees. Many of our employees have become or will soon become vested in a substantial amount of our common stock or a number of common stock options. Our employees may be more likely to leave us if the shares they own have significantly appreciated in value relative to the original purchase prices of the shares, or if the exercise prices of the options that they hold are significantly below the market price of our common stock, particularly after the expiration of the lock-up agreements described herein. Our future success also depends on our ability to continue to attract and retain additional executive officers and other key employees. If we fail to attract new personnel or fail to retain and motivate our current personnel, it will negatively affect our business, financial condition and results of operations.

The use, misuse or off-label use of our products may result in injuries that lead to product liability suits, which could be expensive, divert management’s attention and harm our reputation and business. We may not be able to maintain adequate product liability insurance.

Our products have been cleared by the FDA for specific indications and meet certain treatment parameters. If physicians expand the patient population in which they elect to use our products such that it is outside of the intended use that has been cleared by the FDA, then such use, misuse or off-label use of our products may result in outcomes and adverse events including death, potentially leading to product liability claims. Our products are not indicated for use in all patients with VTE and therefore cannot be marketed or advertised in the United States for certain uses without additional clearances from the FDA. However, we cannot prevent a physician from using our products for off-label applications or using components or products that are not our products when performing procedures with our products. There may be increased risk of injury to patients if physicians attempt to use our devices off-label. In addition, we cannot guarantee that physicians are trained by us or their peers prior to utilizing our products. Complications resulting from the use of our products off-label or use by physicians who have not been trained appropriately, or at all, may not effectively treat the applicable conditions and may expose us to product liability claims or litigation by our customers or their patients and may harm our reputation.

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If the FDA or any foreign regulatory body determines that our promotional materials, activities or training constitute promotion of an off-label use, they could request that we modify our training or promotional materials or activities or subject us to regulatory or enforcement actions, including the issuance or imposition of an untitled letter, which is used for violators that do not necessitate a warning letter, injunction, seizure, civil fine or criminal penalties. It is also possible that other federal, state or foreign enforcement authorities might take action under other regulatory authority, such as false claims laws, if they consider our business activities to constitute promotion of an off-label use, which could result in significant penalties, including, but not limited to, criminal, civil and administrative penalties, damages, fines, disgorgement, exclusion from participation in government healthcare programs and the curtailment of our operations. The federal government has levied large civil and criminal fines and/or other penalties against companies for alleged improper promotion and has investigated, prosecuted, and/or enjoined several companies from engaging in off-label promotion.

In addition, if our products are defectively designed, manufactured or labeled, contain defective components or are misused, we may become subject to costly litigation initiated by physicians, hospitals or patients. Product liability claims are especially prevalent in the medical device industry and could harm our reputation, divert management’s attention from our core business, be expensive to defend and may result in sizable damage awards against us. Although we maintain product liability insurance, we may not have sufficient insurance coverage for future product liability claims. We may not be able to obtain insurance in amounts or scope sufficient to provide us with adequate coverage against all potential liabilities. Any product liability claims brought against us, with or without merit, could increase our product liability insurance rates or prevent us from securing continuing coverage, harm our reputation, significantly increase our expenses, and reduce product sales. Product liability claims could cause us to incur significant legal fees and deductibles and claims in excess of our insurance coverage would be paid out of cash reserves, harming our financial condition and operating results.

We may need additional funding to finance our planned operations, and may not be able to raise capital when needed, which could force us to delay, reduce or eliminate our product development programs and commercialization efforts.

Since inception, we have incurred significant net losses and may continue to incur net losses for the foreseeable future. To date, our primary sources of capital have been the net proceeds we received through private placements of preferred stock, debt financing agreements, the sale of our common stock in our IPO and revenue from the sale of our products. As of December 31, 2020, we had $164.2 million in cash and cash equivalents and short-term investments, no long-term debt and an accumulated deficit of $27.4 million. Based on our current planned operations, we expect that our cash and cash equivalents and available borrowings will enable us to fund our operating expenses for at least 12 months from the date hereof. We have based these estimates on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we expect.

We expect to continue to invest in clinical trials and registries that are designed to provide clinical evidence of the safety and efficacy of our products, expanding our sales and marketing organization, and research and development of product improvements and future products. Moreover, we expect to incur additional expenses associated with operating as a public company, including legal, accounting, insurance, exchange listing and SEC compliance, investor relations and other expenses. Because of these and other factors, we expect to continue to incur net losses and negative cash flows from operations for the foreseeable future. Our future funding requirements will depend on many factors, including:

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We may seek to raise additional capital through equity offerings or debt financings and such additional financing may not be available to us on acceptable terms, or at all. In addition, any additional equity or debt financing that we raise may contain terms that are not favorable to us or our stockholders. For example, if we raise funds by issuing equity or equity-linked securities, the issuance of such securities could result in dilution to our stockholders. Any equity securities issued may also provide for rights, preferences or privileges senior to those of holders of our common stock. In addition, the issuance of additional equity securities by us, or the possibility of such issuance, may cause the market price of our common stock to decline, and the price per share at which we sell additional shares of our common stock, or securities convertible into or exercisable or exchangeable for shares of our common stock, in future transactions may be higher or lower than the price per share paid by investors.

In addition, the terms of debt securities issued or borrowings could impose significant restrictions on our operations including restrictive covenants, such as limitations on our ability to incur additional debt or issue additional equity, limitations on our ability to pay dividends, limitations on our ability to acquire or license intellectual property rights, and other operating restrictions that could adversely affect our ability to conduct our business. In the event that we enter into collaborations or licensing arrangements to raise capital, we may be required to accept unfavorable terms, such as relinquishment or licensing of certain technologies or products that we otherwise would seek to develop or commercialize ourselves, or reserve for future potential arrangements when we might otherwise be able to achieve more favorable terms. In addition, we may be forced to work with a partner on one or more of our products or market development programs, which could lower the economic value of those programs to us.

If we are unable to obtain adequate financing on terms satisfactory to us when we require it, we may terminate or delay the development of one or more of our products, delay clinical trials necessary to market our products, or delay establishment of sales and marketing capabilities or other activities necessary to commercialize our products. If this were to occur, our ability to grow and support our business and to respond to market challenges could be significantly limited, which could have a material adverse effect on our business, financial condition and results of operations.

We entered into a new credit facility, which may affect our ability to operate our business and secure additional financing in the future.

In August 2020, we repaid in full and terminated our credit facility with Signature Bank, or the SB Credit Facility. In September 2020, we entered into a senior secured revolving credit facility with Bank of America, or the Credit Agreement, under which we may borrow loans up to a maximum principal amount of $30.0 million. Advances under the Credit Agreement bear interest at an annual rate equal to the greater of the prime rate, the federal funds rate plus 0.50%, or the LIBOR rate, or successor rate, based upon an interest period of 30 days plus 1.00%, plus an applicable margin. Margin will be 1.25% until March 31, 2021 and then will range from 1.00% to 1.50% based on the Company’s applicable fixed charge coverage ratio. As of December 31, 2020, there were no amounts outstanding under the Credit Agreement. In addition, we are required to pay an unused line fee at an annual rate ranging from 0.25% to 0.375% of the average daily unused portion of the amounts available under the Credit Agreement. We are required to make monthly interest payments on any borrowed amounts outstanding under the Credit Agreement, which may divert resources from other activities.

Our obligations under the Credit Agreement are collateralized by substantially all of our assets, excluding intellectual property, and we are subject to customary financial and operating covenants limiting our ability to,

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among other things, dispose of assets, undergo a change in control, merge or consolidate, incur debt, make distributions, grant liens and make investments, in each case subject to certain exceptions. The covenants related to the Credit Agreement, as well as any future financing agreements into which we may enter, may restrict our ability to finance our operations and engage in, expand or otherwise pursue our business activities and strategies.

While we have not previously breached and are not currently in breach of these or any other covenants contained in our Credit Agreement or other debt arrangements, there can be no guarantee that we will not breach these covenants in the future. Our ability to comply with these covenants may be affected by events beyond our control, and future breaches of any of these covenants could result in a default under the Credit Agreement. If not waived, future defaults could cause all of the outstanding indebtedness under the Credit Agreement to become immediately due and payable and terminate commitments to extend further credit and foreclose on the collateral granted to it to collateralize such indebtedness. If we do not have or are unable to generate sufficient cash available to repay our debt obligations when they become due and payable, either upon maturity or in the event of a default, our assets could be foreclosed upon and we may not be able to obtain additional debt or equity financing on favorable terms, if at all, which may negatively impact our ability to operate and continue our business as a going concern.

In order to service indebtedness, we need to generate cash from our operating activities. Our ability to generate cash is subject, in part, to our ability to successfully execute our business strategy, as well as general economic, financial, competitive, regulatory and other factors beyond our control. We cannot assure you that our business will be able to generate sufficient cash flow from operations or that future borrowings or other financings will be available to us in an amount sufficient to enable us to service our indebtedness and fund our other liquidity needs. To the extent we are required to use cash from operations or the proceeds of any future financing to service our indebtedness instead of funding working capital, capital expenditures or other general corporate purposes, we will be less able to plan for, or react to, changes in our business, industry and in the economy generally. This may place us at a competitive disadvantage compared to our competitors that have less indebtedness.

We may acquire other companies or technologies, which could fail to result in a commercial product or net sales, divert our management’s attention, result in additional dilution to our stockholders and otherwise disrupt our business.

Although we currently have no agreements or commitments to complete any such transactions and are not involved in negotiations to do so, we may in the future seek to acquire or invest in businesses, applications or technologies that we believe could complement or expand our portfolio, enhance our technical capabilities or otherwise offer growth opportunities. However, we cannot assure you that we would be able to successfully complete any acquisition we choose to pursue, or that we would be able to successfully integrate any acquired business, product or technology in a cost-effective and non-disruptive manner. The pursuit of potential acquisitions may divert the attention of management and cause us to incur various costs and expenses in identifying, investigating and pursuing suitable acquisitions, whether or not they are consummated. We may not be able to identify desirable acquisition targets or be successful in entering into an agreement with any particular target or obtain the expected benefits of any acquisition or investment.

To date, the growth of our operations has been largely organic, and we have limited experience in acquiring other businesses or technologies. We may not be able to successfully integrate any acquired personnel, operations and technologies, or effectively manage the combined business following an acquisition. Acquisitions could also result in dilutive issuances of equity securities, the use of our available cash, or the incurrence of debt, which could harm our operating results. In addition, if an acquired business fails to meet our expectations, our business, financial condition and results of operations may be negatively affected.

Taxing authorities may successfully assert that we should have collected or in the future should collect sales and use, gross receipts, value added or similar taxes and may successfully impose additional obligations on us.

One or more jurisdictions may seek to impose additional tax collection obligations on us, including for past sales. A successful assertion by a state, country, or other jurisdiction that we should have been or should be collecting additional sales, use, or other taxes on our services could, among other things, result in substantial tax

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liabilities for past sales, create significant administrative burdens for us, discourage users from purchasing our products, or otherwise harm our business, results of operations and financial condition.

Our ability to utilize our net operating loss carryforwards and research and development carryforwards may be limited.

As of December 31, 2020 we had U.S. federal, state, and foreign net operating loss carryforwards, or NOLs, of $30.1 million, $25.0 million, and $0.8 million, respectively, and U.S. federal and state research and development credit carryforwards of $2.3 million and $1.7 million, respectively. In general, under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, or the Code, a corporation that undergoes an “ownership change,” generally defined as a greater than 50 percentage point change by value in its equity ownership over a rolling three-year period, is subject to limitations on its ability to utilize its pre-change net operating losses, or NOLs, and its research and development credit carryforwards to offset future taxable income. Our existing NOLs and research and development credit carryforwards have been, and may in the future be, subject to limitations arising from previous ownership changes, and if we undergo an ownership change, our ability to utilize NOLs and research and development credit carryforwards could be further limited by Sections 382 and 383 of the Code. In addition, our ability to deduct net interest expense may be limited if we have insufficient taxable income for the year during which the interest is incurred, and any carryovers of such disallowed interest would be subject to the limitation rules similar to those applicable to NOLs and other attributes. Future changes in our stock ownership, some of which might be beyond our control, could result in an ownership change under Section 382 of the Code. For these reasons, in the event we experience a future change of control, we may not be able to utilize a material portion of the NOLs, research and development credit carryforwards or disallowed interest expense carryovers, even if we attain profitability.

In addition, the tax benefit of NOLs, temporary differences and credit carryforwards are required to be recorded as an asset to the extent that we assess that realization is more likely than not. We believe that recognition of the deferred tax asset arising from these future tax benefits is not likely to be realized and, accordingly, have provided a valuation allowance of $11.9 million and $11.8 million for the years ended December 31, 2020 and 2019, respectively.

The impact of the Tax Cuts and Jobs Act on our financial results is not entirely clear and could differ materially from the financial statements provided herein.

On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act, or the TCJA, that significantly reformed the Code. The TCJA, among other things, contained significant changes to corporate taxation, including reduction of the corporate tax rate from a top marginal rate of 35% to a flat rate of 21%; limitation of the tax deduction for interest expense; limitation of the deduction for NOLs and elimination of NOL carrybacks, in each case, for losses arising in taxable years beginning after December 31, 2017 (though any such tax losses may be carried forward indefinitely); and modifying or repealing many business deductions and credits. The financial statements contained herein reflect the effects of the TCJA based on current guidance.

However, there remain uncertainties and ambiguities in the application of certain provisions of the TCJA, and, as a result, we made certain judgments and assumptions in the interpretation thereof. The U.S. Treasury Department and the Internal Revenue Service may issue further guidance on how the provisions of the TCJA will be applied or otherwise administered that differs from our current interpretation. In addition, the TCJA could be subject to potential amendments and technical corrections, any of which could materially lessen or increase certain adverse impacts of the legislation on us.

As international expansion of our business occurs in future years, it will expose us to market, regulatory, political, operational, financial and economic risks associated with doing business outside of the United States.

Our long-term strategy is to increase our international presence, including securing regulatory approvals in targeted countries outside the United States. We have received CE Mark approval for our ClotTriever and

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FlowTriever products, allowing us to commercialize in Europe. Doing business internationally involves a number of risks, including:

Any of these factors could significantly harm our future international expansion and operations or could increase our costs and, consequently, have a material adverse effect on our business, financial condition and results of operations.

The United Kingdom’s withdrawal from the European Union may have a negative effect on global economic conditions, financial markets and our business.

Following a national referendum and enactment of legislation by the government of the United Kingdom, the United Kingdom formally withdrew from the European Union and ratified a trade and cooperation agreement governing its future relationship with the European Union.  The agreement, which is being applied provisionally from January 1, 2021 until it is ratified by the European Parliament and the Council of the European Union, addresses trade, economic arrangements, law enforcement, judicial cooperation and a governance framework including procedures for dispute resolution, among other things.  Because the agreement merely sets forth a framework in many respects and will require complex additional bilateral negotiations between the United Kingdom and the European Union as both parties continue to work on the rules for implementation, significant political and economic uncertainty remains about how the precise terms of the relationship between the parties will differ from the terms before withdrawal.

 These developments, or the perception that any of them could occur, have had and may continue to have a material adverse effect on global economic conditions and the stability of global financial markets, and may significantly reduce global market liquidity and restrict the ability of key market participants to operate in certain financial markets. Any of these factors could depress economic activity and restrict our access to capital, which could have a material adverse effect on our business, financial condition and results of operations and reduce the price of our common stock.

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Security breaches, loss of data and other disruptions could compromise sensitive information related to our business or our customer’s patients, or prevent us from accessing critical information and expose us to liability, which could adversely affect our business and our reputation.

In the ordinary course of our business, we may become exposed to, or collect and store, sensitive data, including procedure-based information and legally-protected health information, credit card, and other financial information, insurance information, and other potentially personally identifiable information. We also store sensitive intellectual property and other proprietary business information. We are taking measures to implement policies and procedures designed to ensure compliance with applicable data security and privacy-related laws and regulations and protect sensitive information from unauthorized access or disclosure. However, our information technology, or IT, and infrastructure, and that of our third-party billing and collections provider and other technology partners and providers, may be vulnerable to cyber attacks by hackers or viruses or breaches due to employee error, malfeasance or other disruptions. We rely extensively on IT systems, networks and services, including internet sites, data hosting and processing facilities and tools, physical security systems and other hardware, software and technical applications and platforms, some of which are managed, hosted, provided and/or used by third-parties or their vendors, to assist in conducting our business. Attacks upon information technology systems are increasing in their frequency, levels of persistence, sophistication and intensity, and are being conducted by sophisticated and organized groups and individuals with a wide range of motives and expertise. Furthermore, because the techniques used to obtain unauthorized access to, or to sabotage, systems change frequently and often are not recognized until launched against a target, we may be unable to anticipate these techniques or implement adequate preventative measures. We may also experience security breaches that may remain undetected for an extended period. A significant breakdown, invasion, corruption, destruction or interruption of critical information technology systems or infrastructure, by our workforce, others with authorized access to our systems or unauthorized persons could negatively impact operations. The ever-increasing use and evolution of technology, including cloud-based computing, creates opportunities for the unintentional dissemination or intentional destruction of confidential information stored in our or our third-party providers’ systems, portable media or storage devices. For example, companies have experienced an increase in phishing and social engineering attacks from third-parties in connection with the COVID-19 global pandemic. We could also experience a business interruption, theft of confidential information or reputational damage from industrial espionage attacks, malware or other cyber-attacks, which may compromise our system infrastructure or lead to data leakage, either internally or at our third-party providers. Although the aggregate impact on our operations and financial condition has not been material to date, we have been the target of events of this nature and expect them to continue as cybersecurity threats have been rapidly evolving in sophistication and becoming more prevalent in the industry. We are investing in protections and monitoring practices of our data and IT to reduce these risks and continue to monitor our systems on an ongoing basis for any current or potential threats. There can be no assurance, however, that our efforts will prevent breakdowns or breaches to our or our third-party providers’ databases or systems, and such breakdowns or breaches could adversely affect our business, our financial condition and our reputation.

We could be adversely affected by violations of the FCPA and similar worldwide anti-bribery laws and any investigation, and the outcome of any investigation, by government agencies of possible violations by us of the FCPA could have a material adverse effect on our business.

The FCPA and similar worldwide anti-bribery laws prohibit companies and their intermediaries from corruptly providing any benefits to government officials for the purpose of obtaining or retaining business. The U.S. Departments of Justice, Commerce, State and Treasury and other federal agencies and authorities have a broad range of civil and criminal penalties they may seek to impose against corporations and individuals for violations of economic sanctions laws, export control laws, the U.S. Foreign Corrupt Practices Act, or the FCPA, and other federal statutes and regulations, including those established by the Office of Foreign Assets Control, or OFAC. In addition, the U.K. Bribery Act of 2010, or the Bribery Act, prohibits both domestic and international bribery, as well as bribery across both private and public sectors. An organization that fails to prevent bribery by anyone associated with the organization can be charged under the Bribery Act unless the organization can establish the defense of having implemented adequate procedures to prevent bribery. Under these laws and regulations, as well as other anti-corruption laws, anti-money laundering laws, export control laws, customs laws, sanctions laws and other laws governing our operations, various government agencies may require export licenses, may seek to impose modifications to business practices, including cessation of business activities in sanctioned countries or with

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sanctioned persons or entities and modifications to compliance programs, which may increase compliance costs, and may subject us to fines, penalties and other sanctions.

We are in the process of further enhancing policies designed to ensure compliance by us and our directors, officers, employees, representatives, consultants and agents with the FCPA, OFAC restrictions, the Bribery Act and other export control, anti-corruption, anti-money-laundering and anti-terrorism laws and regulations. In the future, we may operate in parts of the world that have experienced governmental corruption to some degree. Moreover, because of the significant role government entities play in the regulation of many foreign healthcare markets, we may be exposed to heightened FCPA and similar risks arising from our efforts to seek regulatory approval of and reimbursement for our products in such countries. We cannot assure you that our internal control policies and procedures will protect us from improper acts committed by our employees or agents, nor can we assure you that our business partners have not engaged and will not engage in conduct that could materially affect their ability to perform their contractual obligations to us or even result in our being held liable for such conduct. Violations of these laws, or allegations of such violations, would significantly disrupt our business and have a material adverse effect on our business, financial condition and results of operations.

Risks Related to Our Intellectual Property

Our success will depend on our, and any of our current and future licensors’, ability to obtain, maintain and protect our intellectual property rights.

Our commercial success will depend in part on our, and any of our current or future licensors’, success in obtaining and maintaining issued patents, trademarks and other intellectual property rights in the United States and elsewhere and protecting our proprietary technology. If we, or any of our current or future licensors, do not adequately protect our intellectual property and proprietary technology, competitors may be able to use our technologies or the goodwill we have acquired in the marketplace and erode or negate any competitive advantage we may have, which could harm our business and ability to achieve profitability.

Our intellectual property coverage includes protection provided by patents licensed through the Inceptus License and Inceptus Sublicense. We rely on Inceptus to maintain the patents and otherwise protect the intellectual property we license directly from them pursuant to the Inceptus License. We further rely on Drexel University to maintain the patents and otherwise protect the intellectual property we sublicense from Inceptus pursuant to the Inceptus Sublicense. Our licensors, including Inceptus and Drexel University, may not successfully prosecute the intellectual property applications, including patent applications, that we have licensed, may fail to maintain these patents, or may determine not to pursue litigation against other companies that are infringing this intellectual property, or may pursue such litigation less aggressively than we would. If, in the future, we no longer have rights to one or more of these licensed patents or other licensed intellectual property, our intellectual property coverage may be compromised, which, in turn, could affect our ability to protect our products and defend them against competitors. Without protection for the intellectual property we license, other companies might be able to offer substantially identical products for sale, which could adversely affect our competitive business position and harm our business prospects.

We rely on a combination of contractual provisions, confidentiality procedures and patent, copyright, trademark, trade secret and other intellectual property laws to protect the proprietary aspects of our products, brands, technologies and data. These legal measures afford only limited protection, and competitors or others may gain access to or use our intellectual property and proprietary information. Our success will depend, in part, on preserving our trade secrets, maintaining the security of our data and know-how and obtaining and maintaining other intellectual property rights. We may not be able to obtain or maintain intellectual property or other proprietary rights necessary to our business or in a form that provides us with a competitive advantage.

In addition, despite our efforts to enter into confidentiality agreements with our employees, consultants, clients and other vendors who have access to such information, our trade secrets, data and know-how could be subject to unauthorized use, misappropriation, or disclosure to unauthorized parties, and could otherwise become known or be independently discovered by third parties. Our intellectual property, including trademarks, could be challenged, invalidated, infringed, and circumvented by third parties, and our trademarks could also be diluted, declared generic or found to be infringing on other marks. If any of the foregoing occurs, we could be forced to re-brand our

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products, resulting in loss of brand recognition and requiring us to devote resources to advertising and marketing new brands, and suffer other competitive harm. Third parties may also adopt trademarks similar to ours, which could harm our brand identity and lead to market confusion.

Failure to obtain and maintain intellectual property rights necessary to our business and failure to protect, monitor and control the use of our intellectual property rights could negatively impact our ability to compete and cause us to incur significant expenses. The intellectual property laws and other statutory and contractual arrangements in the United States and other jurisdictions we depend upon may not provide sufficient protection in the future to prevent the infringement, use, violation or misappropriation of our trademarks, data, technology and other intellectual property and services, and may not provide an adequate remedy if our intellectual property rights are infringed, misappropriated or otherwise violated.

We rely, in part, on our ability to obtain, maintain, expand, enforce, and defend the scope of our intellectual property portfolio or other proprietary rights, including the amount and timing of any payments we may be required to make in connection with the licensing, filing, defense and enforcement of any patents or other intellectual property rights. The process of applying for and obtaining a patent is expensive, time consuming and complex, and we may not be able to file, prosecute, maintain, enforce or license all necessary or desirable patent applications at a reasonable cost, in a timely manner, or in all jurisdictions where protection may be commercially advantageous, or we may not be able to protect our proprietary rights at all. Despite our efforts to protect our proprietary rights, unauthorized parties may be able to obtain and use information that we regard as proprietary.

We own numerous issued patents and pending patent applications. As of December 31, 2020, we held 19 U.S. patents, which are expected to expire between November 2032 and April 2037, 17 pending U.S. patent applications, four issued foreign patents, 16 pending foreign patent applications and four pending Patent Cooperation Treaty applications, excluding our licensed and sublicensed patents. We also licensed two U.S. patents and sublicensed one U.S. patent. The patent positions of medical device companies, including our patent position, may involve complex legal and factual questions, and therefore, the scope, validity and enforceability of any patent claims that we may obtain cannot be predicted with certainty.

Though an issued patent is presumed valid and enforceable, its issuance is not conclusive as to its validity or its enforceability and it may not provide us with adequate proprietary protection or competitive advantages against competitors with similar products. Patents, if issued, may be challenged, deemed unenforceable, invalidated or circumvented. Proceedings challenging our patents could result in either loss of the patent, or denial or the patent application or loss or reduction in the scope of one or more of the claims of the patent or patent application. In addition, such proceedings may be costly. Thus, any patents that we may own may not provide any protection against competitors. Furthermore, an adverse decision may result in a third party receiving a patent right sought by us, which in turn could affect our ability to commercialize our products. Competitors could purchase our products and attempt to replicate or reverse engineer some or all of the competitive advantages we derive from our development efforts, willfully infringe our intellectual property rights, design around our patents, or develop and obtain patent protection for more effective technologies, designs or methods. We may be unable to prevent the unauthorized disclosure or use of our technical knowledge or trade secrets by consultants, suppliers, vendors, former employees and current employees. Further, the laws of some foreign countries do not protect our proprietary rights to the same extent as the laws of the United States, and we may encounter significant problems in protecting our proprietary rights in these countries.

In addition, proceedings to enforce or defend our patents could put our patents at risk of being invalidated, held unenforceable or interpreted narrowly. Such proceedings could also provoke third parties to assert claims against us, including that some or all of the claims in one or more of our patents are invalid or otherwise unenforceable. If any of our patents covering our products are invalidated or found unenforceable, or if a court found that valid, enforceable patents held by third parties covered one or more of our products, our competitive position could be harmed or we could be required to incur significant expenses to enforce or defend our rights.

The degree of future protection for our proprietary rights is uncertain, and we cannot ensure that:

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Even if we are able to obtain patent protection, such patent protection may be of insufficient scope to achieve our business objectives. Issued patents may be challenged, narrowed, invalidated or circumvented. Decisions by courts and governmental patent agencies may introduce uncertainty in the enforceability or scope of patents owned by or licensed to us. Furthermore, 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 products and practicing our own technology. Alternatively, third parties may seek approval to market their own products similar to or otherwise competitive with our products. In these circumstances, we may need to defend and/or assert our patents, including by filing lawsuits alleging patent infringement. In any of these types of proceedings, a court or agency with jurisdiction may find our patents invalid, unenforceable or not infringed; competitors may then be able to market products and use manufacturing and analytical processes that are substantially similar to ours. Even if we have valid and enforceable patents, these patents still may not provide protection against competing products or processes sufficient to achieve our business objectives.

The U.S. federal government retains certain rights in inventions produced with its financial assistance under the Bayh-Dole Act. The federal government retains a “nonexclusive, nontransferable, irrevocable, paid-up license” for its own benefit. The Bayh-Dole Act also provides federal agencies with “march-in rights.” March-in rights allow the government, in specified circumstances, to require the contractor or successors in title to the patent to grant a “nonexclusive, partially exclusive, or exclusive license” to a “responsible applicant or applicants.” If the patent owner refuses to do so, the government may grant the license to itself. Our business relies heavily on the Inceptus Sublicense, which is a sublicense from Drexel University that is explicitly subject to all applicable U.S. government rights, including, but not limited to, any applicable requirement that products, which result from such intellectual property and are sold in the United States, must be substantially manufactured in the United States. Thus we cannot be sure that some of our intellectual property will be free from government rights or regulations pursuant to the Bayh-Dole Act. If, in the future, we co-own or license in technology which is critical to our business that is developed in whole or in part with federal funds subject to the Bayh-Dole Act, our ability to enforce or otherwise exploit patents covering such technology may be adversely affected.

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

The U.S. Patent and Trademark Office, or USPTO and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. In addition, periodic maintenance fees on issued patents often must be paid to the USPTO and foreign patent agencies over the lifetime of the patent. While an unintentional lapse can in many cases be cured by payment of a late fee or by other means in accordance with the applicable rules, 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. Non-compliance events that could result in abandonment or lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within

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prescribed time limits, non-payment of fees and failure to properly legalize and submit formal documents. If we fail to maintain the patents and patent applications covering our products, we may not be able to stop a competitor from marketing products that are the same as or similar to our products, which would have a material adverse effect on our business.

Changes in patent law could diminish the value of patents in general, thereby impairing our ability to protect our existing and future products.

Recent patent reform legislation could increase the uncertainties and costs surrounding the prosecution of patent applications and the enforcement or defense of issued patents. In 2011, the Leahy-Smith America Invents Act, or the Leahy-Smith Act, was signed into law. The Leahy-Smith Act includes a number of significant changes to U.S. patent law. These include provisions that affect the way patent applications are prosecuted and also may affect patent litigation. These also include provisions that switched the United States from a “first-to-invent” system to a “first-to-file” system, allow third-party submission of prior art to the USPTO during patent prosecution and set forth additional procedures to attack the validity of a patent by the USPTO administered post grant proceedings. Under a first-to-file system, assuming the other requirements for patentability are met, the first inventor to file a patent application generally will be entitled to the patent on an invention regardless of whether another inventor had made the invention earlier. The USPTO recently developed new regulations and procedures to govern administration of the Leahy-Smith Act, and many of the substantive changes to patent law associated with the Leahy-Smith Act, and in particular, the first to file provisions, only became effective in 2013. Accordingly, it is not clear what, if any, impact the Leahy-Smith Act will have on the operation of our business. The Leahy-Smith Act and its implementation could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents, all of which could have a material adverse effect on our business, financial condition and results of operations.

In addition, patent reform legislation may pass in the future that could lead to additional uncertainties and increased costs surrounding the prosecution, enforcement and defense of our patents and applications. Furthermore, the U.S. Supreme Court and the U.S. Court of Appeals for the Federal Circuit have made, and will likely continue to make, changes in how the patent laws of the United States are interpreted. Similarly, foreign courts have made, and will likely continue to make, changes in how the patent laws in their respective jurisdictions are interpreted. We cannot predict future changes in the interpretation of patent laws or changes to patent laws that might be enacted into law by U.S. and foreign legislative bodies. Those changes may materially affect our patents or patent applications and our ability to obtain additional patent protection in the future.

We may become a party to intellectual property litigation or administrative proceedings that could be costly and could interfere with our ability to sell and market our products.

The medical device industry has been characterized by extensive litigation regarding patents, trademarks, trade secrets, and other intellectual property rights, and companies in the industry have used intellectual property litigation to gain a competitive advantage. It is possible that U.S. and foreign patents and pending patent applications or trademarks controlled by third parties may be alleged to cover our products, or that we may be accused of misappropriating third parties’ trade secrets. Additionally, our products include components that we purchase from vendors, and may include design components that are outside of our direct control. Our competitors, many of which have substantially greater resources and have made substantial investments in patent portfolios, trade secrets, trademarks, and competing technologies, may have applied for or obtained, or may in the future apply for or obtain, patents or trademarks that will prevent, limit or otherwise interfere with our ability to make, use, sell and/or export our products or to use our technologies or product names. Moreover, in recent years, individuals and groups that are non-practicing entities, commonly referred to as “patent trolls,” have purchased patents and other intellectual property assets for the purpose of making claims of infringement in order to extract settlements. From time to time, we may receive threatening letters, notices or “invitations to license,” or may be the subject of claims that our products and business operations infringe or violate the intellectual property rights of others. The defense of these matters can be time consuming, costly to defend in litigation, divert management’s attention and resources, damage our reputation and brand and cause us to incur significant expenses or make substantial payments. Vendors from whom we purchase hardware or software may not indemnify us in the event that such hardware or software is accused of infringing a third-party’s patent or trademark or of misappropriating a third-party’s trade secret.

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Since patent applications are confidential for a period of time after filing, we cannot be certain that we were the first to file any patent application related to our products. Competitors may also contest our patents, if issued, by showing the patent examiner that the invention was not original, was not novel or was obvious. In litigation, a competitor could claim that our patents, if issued, are not valid for a number of reasons. If a court agrees, we would lose our rights to those challenged patents.

In addition, we may in the future be subject to claims by our former employees or consultants asserting an ownership right in our patents, patent applications or other intellectual property, as a result of the work they performed on our behalf. Although we generally require all of our employees and consultants and any other partners or collaborators who have access to our proprietary know-how, information or technology to assign or grant similar rights to their inventions to us, we cannot be certain that we have executed such agreements with all parties who may have contributed to our intellectual property, nor can we be certain that our agreements with such parties will be upheld in the face of a potential challenge, or that they will not be breached, for which we may not have an adequate remedy.

Any lawsuits relating to intellectual property rights could subject us to significant liability for damages and invalidate our proprietary rights. Any potential intellectual property litigation also could force us to do one or more of the following:

In addition, if we are found to willfully infringe third-party patents or trademarks or to have misappropriated trade secrets, we could be required to pay treble damages in addition to other penalties. Although patent, trademark, trade secret, and other intellectual property disputes in the medical device area have often been settled through licensing or similar arrangements, costs associated with such arrangements may be substantial and could include ongoing royalties. We may be unable to obtain necessary licenses on satisfactory terms, if at all. If we do not obtain necessary licenses, we may not be able to redesign our products to avoid infringement.

Any litigation or claim against us, even those without merit and even those where we prevail, may cause us to incur substantial costs, and could place a significant strain on our financial resources, divert the attention of management from our core business and harm our reputation. If we are found to infringe the intellectual property rights of third parties, we could be required to pay substantial damages (which may be increased up to three times of awarded damages) and/or substantial royalties and could be prevented from selling our products unless we obtain a license or are able to redesign our products to avoid infringement. Any such license may not be available on reasonable terms, if at all, and there can be no assurance that we would be able to redesign our products in a way that would not infringe the intellectual property rights of others. We could encounter delays in product introductions while we attempt to develop alternative methods or products. If we fail to obtain any required licenses or make any necessary changes to our products or technologies, we may have to withdraw existing products from the market or may be unable to commercialize one or more of our products.

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In addition, we generally indemnify our customers with respect to infringement by our products of the proprietary rights of third parties. However, third parties may assert infringement claims against our customers. These claims may require us to initiate or defend protracted and costly litigation on behalf of our customers, regardless of the merits of these claims. If any of these claims succeed or settle, we may be forced to pay damages or settlement payments on behalf of our customers or may be required to obtain licenses for the products they use. If we cannot obtain all necessary licenses on commercially reasonable terms, our customers may be forced to stop using our products.

Similarly, interference or derivation proceedings provoked by third parties or brought by the USPTO may be necessary to determine priority with respect to our patents, patent applications, trademarks or trademark applications. We may also become involved in other proceedings, such as reexamination, inter parties review, derivation or opposition proceedings before the USPTO or other jurisdictional body relating to our intellectual property rights or the intellectual property rights of others. Adverse determinations in a judicial or administrative proceeding or failure to obtain necessary licenses could prevent us from manufacturing our products or using product names, which would have a significant adverse impact on our business, financial condition and results of operations.

Additionally, we may file lawsuits or initiate other proceedings to protect or enforce our patents or other intellectual property rights, which could be expensive, time consuming and unsuccessful. Competitors may infringe our issued patents or other intellectual property. To counter infringement or unauthorized use, we may be required to file infringement claims, which can be expensive and time-consuming. Any claims we assert against perceived infringers could provoke these parties to assert counterclaims against us alleging that we infringe their intellectual property. In addition, in a patent or other intellectual property infringement proceeding, a court may decide that a patent or other intellectual property of ours is invalid or unenforceable, in whole or in part, construe the patent’s claims or other intellectual property narrowly or refuse to stop the other party from using the technology at issue on the grounds that our patents or other intellectual property do not cover the technology in question. Furthermore, even if our patents or other intellectual property are found to be valid and infringed, a court may refuse to grant injunctive relief against the infringer and instead grant us monetary damages and/or ongoing royalties. Such monetary compensation may be insufficient to adequately offset the damage to our business caused by the infringer’s competition in the market. An adverse result in any litigation proceeding could put one or more of our patents or other intellectual property at risk of being invalidated or interpreted narrowly, which could adversely affect our competitive business position, financial condition and results of operations.

If we are unable to protect the confidentiality of our other proprietary information, our business and competitive position may be harmed.

In addition to patent protection, we also rely on other proprietary rights, including protection of trade secrets, and other proprietary information that is not patentable or that we elect not to patent. However, trade secrets can be difficult to protect and some courts are less willing or unwilling to protect trade secrets. To maintain the confidentiality of our trade secrets and proprietary information, we rely heavily on confidentiality provisions that we have in contracts with our employees, consultants, collaborators and others upon the commencement of their relationship with us. We cannot guarantee that we have entered into such agreements with each party that may have or have had access to our trade secrets or proprietary technology and processes. We may not be able to prevent the unauthorized disclosure or use of our technical knowledge or other trade secrets by such third parties, despite the existence generally of these confidentiality restrictions. These contracts may not provide meaningful protection for our trade secrets, know-how, or other proprietary information in the event the unwanted use is outside the scope of the provisions of the contracts or in the event of any unauthorized use, misappropriation, or disclosure of such trade secrets, know-how, or other proprietary information. There can be no assurance that such third parties will not breach their agreements with us, that we will have adequate remedies for any breach, or that our trade secrets will not otherwise become known or independently developed by competitors. Despite the protections we do place on our intellectual property or other proprietary rights, monitoring unauthorized use and disclosure of our intellectual property is difficult, and we do not know whether the steps we have taken to protect our intellectual property or other proprietary rights will be adequate. In addition, the laws of many foreign countries will not protect our intellectual property or other proprietary rights to the same extent as the laws of the United States. Consequently, we may be unable to prevent our proprietary technology from being exploited abroad, which could affect our ability to expand to international markets or require costly efforts to protect our technology. To the extent our intellectual

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property or other proprietary information protection is incomplete, we are exposed to a greater risk of direct competition. A third party could, without authorization, copy or otherwise obtain and use our products or technology, or develop similar technology. Our competitors could purchase our products and attempt to replicate some or all of the competitive advantages we derive from our development efforts or design around our protected technology. Our failure to secure, protect and enforce our intellectual property rights could substantially harm the value of our products, brand and business. The theft or unauthorized use or publication of our trade secrets and other confidential business information could reduce the differentiation of our products and harm our business, the value of our investment in development or business acquisitions could be reduced and third parties might make claims against us related to losses of their confidential or proprietary information. Any of the foregoing could materially and adversely affect our business, financial condition and results of operations.

Further, it is possible that others will independently develop the same or similar technology or products or otherwise obtain access to our unpatented technology, and in such cases we could not assert any trade secret rights against such parties. Costly and time consuming litigation could be necessary to enforce and determine the scope of our trade secret rights and related confidentiality and nondisclosure provisions. If we fail to obtain or maintain trade secret protection, or if our competitors obtain our trade secrets or independently develop technology or products similar to ours or competing technologies or products, our competitive market position could be materially and adversely affected. In addition, some courts are less willing or unwilling to protect trade secrets and agreement terms that address non-competition are difficult to enforce in many jurisdictions and might not be enforceable in certain cases.

We also seek to preserve the integrity and confidentiality of our data and other confidential information by maintaining physical security of our premises and physical and electronic security of our information technology systems. While we have confidence in these individuals, organizations and systems, agreements or security measures may be breached and detecting the disclosure or misappropriation of confidential information and enforcing a claim that a party illegally disclosed or misappropriated confidential information is difficult, expensive and time-consuming, and the outcome is unpredictable. Further, we may not be able to obtain adequate remedies for any breach.

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

A company may attempt to commercialize competing products utilizing our proprietary design, trademarks or tradenames in foreign countries where we do not have any patents or patent applications and where legal recourse may be limited. This may have a significant commercial impact on our foreign business operations.

Filing, prosecuting and defending patents or trademarks on our current and future products in all countries throughout the world would be prohibitively expensive. The requirements for patentability and trademarking may differ in certain countries, particularly developing countries. The laws of some foreign countries do not protect intellectual property rights to the same extent as laws in the United States. Consequently, we may not be able to prevent third parties from utilizing our inventions and trademarks in all countries outside the United States. Competitors may use our technologies or trademarks in jurisdictions where we have not obtained patent or trademark protection to develop or market their own products and further, may export otherwise infringing products to territories where we have patent and trademark protection, but enforcement on infringing activities is inadequate. These products or trademarks may compete with our products or trademarks, and our patents, trademarks 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 certain countries, particularly certain developing countries, do not favor the enforcement of patents, trademarks and other intellectual property protection, which could make it difficult for us to stop the infringement of our patents and trademarks or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent and trademarks 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 and trademarks in those jurisdictions, as well as elsewhere at risk of being invalidated or interpreted narrowly and our patent or trademark applications at risk, 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. Certain countries in Europe and certain developing countries, including India

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and China, have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. In those countries, we may have limited remedies if our patents are infringed or if we are compelled to grant a license to our patents to a third party, which could materially diminish the value of those patents. This could limit our potential revenue opportunities. 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 own or license. Finally, our ability to protect and enforce our intellectual property rights may be adversely affected by unforeseen changes in foreign intellectual property laws.

We may be subject to claims that we or our employees have misappropriated the intellectual property of a third party, including trade secrets or know-how, or are in breach of non-competition or non-solicitation agreements with our competitors.

Many of our employees and consultants were previously employed at or engaged by other medical device, biotechnology or pharmaceutical companies, including our competitors or potential competitors. Some of these employees, consultants and contractors, may have executed proprietary rights, non-disclosure and non-competition agreements in connection with such previous employment. Although we try to ensure that our employees and consultants do not use the intellectual property, proprietary information, know-how or trade secrets of others in their work for us, we may be subject to claims that we or these individuals have, inadvertently or otherwise, misappropriated the intellectual property or disclosed the alleged trade secrets or other proprietary information, of these former employers or competitors.

Additionally, we may be subject to claims from third parties challenging our ownership interest in intellectual property we regard as our own, based on claims that our employees or consultants have breached an obligation to assign inventions to another employer, to a former employer, or to another person or entity. Litigation may be necessary to defend against any other claims, and it may be necessary or we may desire to enter into a license to settle any such claim; however, there can be no assurance that we would be able to obtain a license on commercially reasonable terms, if at all. If our defense to those claims fails, in addition to paying monetary damages, a court could prohibit us from using technologies or features that are essential to our products, if such technologies or features are found to incorporate or be derived from the trade secrets or other proprietary information of the former employers. An inability to incorporate technologies or features that are important or essential to our products could have a material adverse effect on our business, financial condition and results of operations, and may prevent us from selling our products. In addition, we may lose valuable intellectual property rights or personnel. Even if we are successful in defending against these claims, litigation could result in substantial costs and could be a distraction to management. Any litigation or the threat thereof may adversely affect our ability to hire employees or contract with independent sales representatives. A loss of key personnel or their work product could hamper or prevent our ability to commercialize our products, which could have an adverse effect on our business, financial condition and results of operations.

Risks Related to Government Regulation

Our products and operations are subject to extensive government regulation and oversight in the United States.

Our products are regulated as medical devices. We and our products are subject to extensive regulation in the United States, including by the FDA, and may in the future be subject to regulation elsewhere and by the FDA’s foreign counterparts. The FDA and foreign regulatory agencies regulate, among other things, with respect to medical devices: design, development, manufacturing and release; laboratory, preclinical and clinical testing; labeling, packaging, content and language of instructions for use and storage; product safety and efficacy; establishment registration and device listing; marketing, sales and distribution; pre-market clearance and approval; service operations; record keeping procedures; advertising and promotion; recalls and field safety corrective actions; post-market surveillance, including reporting of deaths or serious injuries and malfunctions that, if they were to recur, could lead to death or serious injury; post-market studies; and product import and export.

The regulations to which we are subject are complex and have tended to become more stringent over time. Regulatory changes could result in restrictions on our ability to carry on or expand our operations, higher than anticipated costs or lower than anticipated sales. The FDA enforces these regulatory requirements through, among other means, periodic unannounced inspections. We do not know whether we will be found compliant in connection with any future FDA inspections. Failure to comply with applicable regulations could jeopardize our ability to sell

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our products and result in enforcement actions such as: warning letters; fines; injunctions; civil penalties; termination of distribution; recalls or seizures of products; delays in the introduction of products into the market; total or partial suspension of production; refusal to grant future clearances or approvals; withdrawals or suspensions of current approvals, resulting in prohibitions on sales of our products; and in the most serious cases, criminal penalties.

We may not receive, or may be delayed in receiving, the necessary clearances, certifications or approvals for our future products or modifications to our current products, and failure to timely obtain necessary clearances, certifications or approvals for our future products or modifications to our current products would adversely affect our ability to grow our business.

In the United States, before we can market a new medical device, or a new use of, new claim for or significant modification to an existing product, we must first receive either clearance under Section 510(k) of the Federal Food, Drug, and Cosmetic Act, or the FDCA, or approval of a pre-market approval application, or PMA, from the FDA, unless an exemption applies. In the 510(k) clearance process, before a device may be marketed, the FDA must determine that a proposed device is “substantially equivalent” to a legally-marketed “predicate” device, which includes a device that has been previously cleared through the 510(k) process, a device that was legally marketed prior to May 28, 1976 (pre-amendments device), a device that was originally on the U.S. market pursuant to an approved PMA and later down-classified, or a 510(k)-exempt device. To be “substantially equivalent,” the proposed device must have the same intended use as the predicate device, and either have the same technological characteristics as the predicate device or have different technological characteristics and not raise different questions of safety or effectiveness than the predicate device. Clinical data are sometimes required to support substantial equivalence. In the process of obtaining PMA approval, the FDA must determine that a proposed device is safe and effective for its intended use based, in part, on extensive data, including, but not limited to, technical, preclinical, clinical trial, manufacturing and labeling data. The PMA process is typically required for devices that are deemed to pose the greatest risk, such as life-sustaining, life-supporting or implantable devices.

Modifications to products that are approved through a PMA application generally require FDA approval. Similarly, certain modifications made to products cleared through a 510(k) may require a new 510(k) clearance. Both the PMA approval and the 510(k) clearance process can be expensive, lengthy and uncertain. The FDA’s 510(k) clearance process usually takes from three to 12 months, but can last longer. The process of obtaining a PMA is much more costly and uncertain than the 510(k) clearance process and generally takes from one to three years, or even longer, from the time the application is submitted to the FDA. In addition, a PMA generally requires the performance of one or more clinical trials. Despite the time, effort and cost, a device may not be approved or cleared by the FDA. Any delay or failure to obtain necessary regulatory clearances or approvals could harm our business. Furthermore, even if we are granted regulatory clearances or approvals, they may include significant limitations on the indicated uses for the device, which may limit the market for the device.

In the United States, we have obtained clearance of our ClotTriever and FlowTriever products through the 510(k) clearance process. Any modification to these systems that has not been previously cleared may require us to submit a new 510(k) premarket notification and obtain clearance, or submit a PMA and obtain FDA approval prior to implementing the change. Specifically, any modification to a 510(k)-cleared device that could significantly affect its safety or effectiveness, or that would constitute a major change in its intended use, design or manufacture, requires a new 510(k) clearance or, possibly, approval of a PMA. The FDA requires every manufacturer to make this determination in the first instance, but the FDA may review any manufacturer’s decision. The FDA may not agree with our decisions regarding whether new clearances or approvals are necessary. We have made modifications to 510(k)-cleared products in the past and have determined based on our review of the applicable FDA regulations and guidance that in certain instances new 510(k) clearances or PMA approvals were not required. We may make modifications or add additional features in the future that we believe do not require a new 510(k) clearance or approval of a PMA. If the FDA disagrees with our determination and requires us to submit new 510(k) notifications or PMA applications for modifications to our previously cleared products for which we have concluded that new clearances or approvals are unnecessary, we may be required to cease marketing or to recall the modified product until we obtain clearance or approval, and we may be subject to significant regulatory fines or penalties. If the FDA requires us to go through a lengthier, more rigorous examination for future products or modifications to existing products than we had expected, product introductions or modifications could be delayed or canceled, which could adversely affect our ability to grow our business.

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The FDA can delay, limit or deny clearance or approval of a device for many reasons, including:

In order to sell our products in member countries of the European Union, or the EU, our products must comply with the essential requirements of the EU Medical Devices Directive (Council Directive 93/42/EEC). Compliance with these requirements is a prerequisite to be able to affix the CE mark to our products, without which they cannot be sold or marketed in the EU. To demonstrate compliance with the essential requirements we must undergo a conformity assessment procedure, which varies according to the type of medical device and its (risk) classification. Except for low-risk medical devices (Class I non-sterile, non-measuring devices), where the manufacturer can self-declare the conformity of its products with the essential requirements of the EU Medical Devices Directive, a conformity assessment procedure requires the intervention of an organization accredited or licensed by a member state of the EU to conduct conformity assessments, or a Notified Body. Depending on the relevant conformity assessment procedure, the Notified Body would typically audit and examine the technical file and the quality system for the manufacture, design and final inspection of our devices. The Notified Body issues a certificate of conformity following successful completion of a conformity assessment procedure conducted in relation to the medical device and its manufacturer and their conformity with the essential requirements. This certificate entitles the manufacturer to affix the CE mark to its medical devices after having prepared and signed a related EC Declaration of Conformity.

As a general rule, demonstration of conformity of medical devices and their manufacturers with the essential requirements must be based, among other things, on the evaluation of clinical data supporting the safety and performance of the products during normal conditions of use. Specifically, a manufacturer must demonstrate that the device achieves its intended performance during normal conditions of use, that the known and foreseeable risks, and any adverse events, are minimized and acceptable when weighed against the benefits of its intended performance, and that any claims made about the performance and safety of the device are supported by suitable evidence. If we fail to remain in compliance with applicable European laws and directives and national member states laws, we would be unable to continue to affix the CE mark to our products, which would prevent us from selling them within the EU.

The aforementioned EU rules are generally applicable in the European Economic Area, or EEA, which consists of the 27 EU member states plus Norway, Liechtenstein and Iceland.

Following the end of the “Brexit” Transition Period, from 1 January 2021 onwards, the Medicines and Healthcare Products Regulatory Agency (“MHRA”) will be responsible for the UK medical device market. The new regulations will require medical devices to be registered with the MHRA (but manufacturers will be given a grace period of four to 12 months to comply with the new registration process). Manufacturers based outside the UK will need to appoint a UK Responsible Person to register devices with the MHRA in line with the grace periods. By July 1, 2023, in the UK (England, Scotland, and Wales), all medical devices will require a UKCA (UK Conformity Assessed) mark but CE marks issued by EU Notified Bodies will remain valid until this time. However, UKCA

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marking alone will not be recognized in the EU. The rules for placing medical devices on the Northern Ireland market will differ from those in the UK.

Failure to comply with post-marketing regulatory requirements could subject us to enforcement actions, including substantial penalties, and might require us to recall or withdraw a product from the market.

Even though we have obtained FDA clearance for our ClotTriever and FlowTriever products in the United States, we are subject to ongoing and pervasive regulatory requirements governing, among other things, the manufacture, marketing, advertising, medical device reporting, sale, promotion, import, export, registration, and listing of devices. For example, we must submit periodic reports to the FDA as a condition of 510(k) clearance. These reports include information about failures and certain adverse events associated with the device after its clearance. Failure to submit such reports, or failure to submit the reports in a timely manner, could result in enforcement action by the FDA. Following its review of the periodic reports, the FDA might ask for additional information or initiate further investigation.

The regulations to which we are subject are complex and have become more stringent over time. Regulatory changes could result in restrictions on our ability to continue or expand our operations, higher than anticipated costs, or lower than anticipated sales. Even after we have obtained the proper regulatory clearance to market a device, we have ongoing responsibilities under FDA regulations and applicable foreign laws and regulations. The FDA, state and foreign regulatory authorities have broad enforcement powers. Our failure to comply with applicable regulatory requirements could result in enforcement action by the FDA, state or foreign regulatory authorities, which may include any of the following sanctions:

Any of these sanctions could result in higher than anticipated costs or lower than anticipated sales and have a material adverse effect on our reputation, business, financial condition and results of operations.

In addition, the FDA may change its clearance policies, adopt additional regulations or revise existing regulations, or take other actions, which may prevent or delay clearance or approval of our future products under development or impact our ability to modify our currently cleared products on a timely basis. Such policy or regulatory changes could impose additional requirements upon us that could delay our ability to obtain new clearances or approvals, increase the costs of compliance or restrict our ability to maintain our clearances of our current products. For example, the FDA recently announced forthcoming steps that the FDA intends to take to modernize the premarket notification pathway under Section 510(k) of the FDCA. For more information, see “—Legislative or regulatory reforms in the United States or the EU may make it more difficult and costly for us to obtain regulatory clearances or approvals for our products or to manufacture, market or distribute our products after clearance or approval is obtained.”

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Our products must be manufactured in accordance with federal and state regulations, and we could be forced to recall our devices or terminate production if we fail to comply with these regulations.

The methods used in, and the facilities used for, the manufacture of our products must comply with the FDA’s QSR, which is a complex regulatory scheme that covers the procedures and documentation of the design, testing, production, process controls, quality assurance, labeling, packaging, handling, storage, distribution, installation, servicing and shipping of medical devices. Furthermore, we are required to maintain, and to verify that our suppliers maintain, facilities, procedures and operations that comply with our quality standards and applicable regulatory requirements. The FDA enforces the QSR through periodic announced or unannounced inspections of medical device manufacturing facilities, which may include the facilities of subcontractors. No FDA inspection has been conducted at our current facility in Irvine, California. As described below, we initiated a voluntary recall of three lots of our Triever aspiration catheters in March 2020, and it is possible that the FDA will conduct an announced or unannounced inspection of our facility to review our procedures and operations. Our products will also be subject to similar state regulations, various laws and regulations of foreign countries governing manufacturing and a requirement for adherence to industry standards of the International Standards Organization, or ISO, in connection with our medical device operations to maintain future CE marks.

Our third-party manufacturers may not take the necessary steps to comply with applicable regulations, which could cause delays in the delivery of our products. In addition, failure to comply with applicable FDA requirements or later discovery of previously unknown problems with our products or manufacturing processes could result in, among other things: warning letters or untitled letters; fines, injunctions or civil penalties; suspension or withdrawal of approvals; seizures or recalls of our products; total or partial suspension of production or distribution; administrative or judicially imposed sanctions; the FDA’s refusal to grant pending or future clearances or approvals for our products; clinical holds; refusal to permit the import or export of our products; and criminal prosecution of us, our suppliers, or our employees.

We have received ISO 13485:2016 certification for our quality management system. ISO certification generally includes recertification audits every third year, scheduled annual surveillance audits and periodic unannounced audits.

We can provide no assurance that we will be found to remain in compliance with the QSR or ISO standards upon a regulator’s review. If the FDA or the California Department of Public Health, or other regulator, inspects any of our facilities and discovers compliance problems, we may have to cease manufacturing and product distribution until we can take the appropriate remedial steps to correct the audit findings. Any of the actions noted above could significantly and negatively affect supply of our products. Taking corrective action may be expensive, time-consuming and a distraction for management. If any of these events occurs, our reputation could be harmed, we could be exposed to product liability claims and we could lose customers and experience reduced sales and increased costs.

Our products may cause or contribute to adverse medical events or be subject to failures or malfunctions that we are required to report to the FDA, and if we fail to do so, we would be subject to sanctions that could negatively affect our reputation, business, financial condition and results of operations. The discovery of serious safety issues with our products, or a recall of our products either voluntarily or at the direction of the FDA or another governmental authority, could have a negative impact on us.

We are subject to the FDA’s medical device reporting regulations and similar foreign regulations, which require us to report to the FDA when we receive or become aware of information that reasonably suggests that one or more of our products may have caused or contributed to a death or serious injury or malfunctioned in a way that, if the malfunction were to recur, it could cause or contribute to a death or serious injury. The timing of our obligation to report is triggered by the date we become aware of the adverse event as well as the nature of the event. We may fail to report adverse events of which we become aware within the prescribed timeframe. We may also fail to recognize that we have become aware of a reportable adverse event, especially if it is not reported to us as an adverse event or if it is an adverse event that is unexpected or removed in time from the use of the product. If we fail to comply with our reporting obligations, the FDA could take action, including warning letters, untitled letters, administrative actions, criminal prosecution, imposition of civil monetary penalties, revocation of our device clearance or approval, seizure of our products or delay in clearance or approval of future products.

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The FDA and foreign regulatory bodies have the authority to require the recall of commercialized products in the event of material deficiencies or defects in design or manufacture of a product or in the event that a product poses an unacceptable risk to health. The FDA’s authority to require a recall must be based on a finding that there is reasonable probability that the device could cause serious injury or death. We may also choose to voluntarily recall a product if any material deficiency is found. For example, in March 2020, we initiated a voluntary recall of three lots of our Triever aspiration catheters (371 products in total) because of a potential leak and failure to seal in the hemostasis valve on the catheters, which could result in the loss of vacuum pressure and aspiration during use. We voluntarily initiated this recall after we received customer reports regarding potential leaks involving 12 products in the three impacted lots. All affected customers have been notified and have responded to the recall notice. We have not received any customer reports following the recall notice and there have been no reported adverse patient outcomes resulting from the impacted products. A government-mandated or voluntary recall by us could occur as a result of an unacceptable risk to health, component failures, malfunctions, manufacturing defects, labeling or design deficiencies, packaging defects or other deficiencies or failures to comply with applicable regulations. Product defects or other errors may occur in the future.

If we initiate a correction or removal for our products to reduce a risk to health posed by them or to remedy a violation of law that may present a risk to health, we would be required to submit a report to the FDA and may be required to submit similar notifications to other regulatory authorities. This report could lead to increased scrutiny by the FDA, other international regulatory agencies and our customers regarding the quality and safety of our products. Furthermore, the submission of these reports, to the extent made publicly available in accordance with FDA regulations, could be used by competitors against us and cause physicians to delay or cancel product orders, which will harm our reputation.

If we assess a potential quality issue or complaint as not requiring either field action or regulatory notification, regulators may review documentation of that decision during a subsequent audit. If regulators disagree with our decision, or take issue with either our investigation process or the resulting documentation, regulatory agencies may impose sanctions and we may be subject to regulatory enforcement actions, including warning letters, all of which will negatively affect our business, financial condition and results of operations.

Depending on the corrective action we take to redress a product’s deficiencies or defects, the FDA may require, or we may decide, that we will need to obtain new clearances or approvals for the device before we may market or distribute the corrected device. Seeking such clearances or approvals may delay our ability to replace the recalled devices in a timely manner. Moreover, if we do not adequately address problems associated with our devices, we may face additional regulatory enforcement action, including FDA warning letters, product seizure, injunctions, administrative penalties or civil or criminal fines.

Companies are required to maintain certain records of recalls and corrections, even if they are not reportable to the FDA. We may initiate voluntary withdrawals or corrections for our products in the future that we determine do not require notification of the FDA. If the FDA disagrees with our determinations, it could require us to report those actions as recalls and we may be subject to enforcement action. A future recall announcement could harm our reputation with customers, potentially lead to product liability claims against us and negatively affect our sales. Any corrective action, whether voluntary or involuntary, as well as defending ourselves in a lawsuit, will require the dedication of our time and capital, distract management from operating our business and will negatively affect our reputation, business, financial condition and results of operations.

If we do not obtain and maintain international regulatory registrations, clearances or approvals for our products, we will be unable to market and sell our products outside of the United States.

Any future sales of our products outside of the United States are subject to foreign regulatory requirements that vary widely from country to country. In addition, the FDA regulates exports of medical devices from the United States. While the regulations of some countries may not impose barriers to marketing and selling our products or only require notification, others require that we obtain the clearance or approval of a specified regulatory body. Complying with foreign regulatory requirements, including obtaining registrations, clearances or approvals, can be expensive and time-consuming, and we may not receive regulatory clearances or approvals in each country in which we plan to market our products or we may be unable to do so on a timely basis. The time required to obtain registrations, clearances or approvals, if required by other countries, may be longer than that required for FDA

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clearance or approval, and requirements for such registrations, clearances or approvals may significantly differ from FDA requirements. If we modify our products, we may need to apply for regulatory clearances or approvals before we are permitted to sell the modified product.

In addition, we may not continue to meet the quality and safety standards required to maintain the authorizations that we have received. If we are unable to maintain our authorizations in a particular country, we will no longer be able to sell the applicable product in that country.

Regulatory clearance or approval by the FDA does not ensure registration, clearance or approval by regulatory authorities in other countries, and registration, clearance or approval by one or more foreign regulatory authorities does not ensure registration, clearance or approval by regulatory authorities in other foreign countries or by the FDA. However, a failure or delay in obtaining registration or regulatory clearance or approval in one country may have a negative effect on the regulatory process in others.

Legislative or regulatory reforms in the United States or the EU may make it more difficult and costly for us to obtain regulatory clearances or approvals for our products or to manufacture, market or distribute our products after clearance or approval is obtained.

From time to time, legislation is drafted and introduced in Congress that could significantly change the statutory provisions governing the regulation of medical devices. In addition, the FDA may change its clearance and approval policies, adopt additional regulations or revise existing regulations, or take other actions, which may prevent or delay approval or clearance of our future products under development or impact our ability to modify our currently cleared products on a timely basis. Over the last several years, the FDA has proposed reforms to its 510(k) clearance process, and such proposals could include increased requirements for clinical data and a longer review period, or could make it more difficult for manufacturers to utilize the 510(k) clearance process for their products. For example, in November 2018, FDA officials announced forthcoming steps that the FDA intends to take to modernize the premarket notification pathway under Section 510(k) of the FDCA. Among other things, the FDA announced that it planned to develop proposals to drive manufacturers utilizing the 510(k) pathway toward the use of newer predicates. These proposals included plans to potentially sunset certain older devices that were used as predicates under the 510(k) clearance pathway, and to potentially publish a list of devices that have been cleared on the basis of demonstrated substantial equivalence to predicate devices that are more than 10 years old. These proposals have not yet been finalized or adopted, although the FDA may work with Congress to implement such proposals through legislation. Accordingly, it is unclear the extent to which any proposals, if adopted, could impose additional regulatory requirements on us that could delay our ability to obtain new 510(k) clearances, increase the costs of compliance, or restrict our ability to maintain our current clearances, or otherwise create competition that may negatively affect our business.

More recently, in September 2019, the FDA issued revised final guidance describing an optional “safety and performance based” premarket review pathway for manufacturers of “certain, well-understood device types” to demonstrate substantial equivalence under the 510(k) clearance pathway by showing that such device meets objective safety and performance criteria established by the FDA, thereby obviating the need for manufacturers to compare the safety and performance of their medical devices to specific predicate devices in the clearance process. The FDA maintains a list of device types appropriate for the “safety and performance based” pathway and continues to develop product-specific guidance documents that identify the performance criteria for each such device type, as well as recommended testing methods, where feasible. The FDA may establish performance criteria for classes of devices for which we or our competitors seek or currently have received clearance, and it is unclear the extent to which such performance standards, if established, could impact our ability to obtain new 510(k) clearances or otherwise create competition that may negatively affect our business.

In addition, FDA regulations and guidance are often revised or reinterpreted by the FDA in ways that may significantly affect our business and our products. Any new statutes, regulations or revisions or reinterpretations of existing regulations may impose additional costs or lengthen review times of any future products or make it more difficult to obtain clearance or approval for, manufacture, market or distribute our products. We cannot determine what effect changes in regulations, statutes, legal interpretation or policies, when and if promulgated, enacted or adopted may have on our business in the future. Such changes could, among other things, require: additional testing

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prior to obtaining clearance or approval; changes to manufacturing methods; recall, replacement or discontinuance of our products; or additional record keeping.

The FDA’s and other regulatory authorities’ policies may change and additional government regulations may be promulgated that could prevent, limit or delay regulatory clearance or approval of our product candidates. For example, the results of the 2020 U.S. Presidential Election may impact our business and industry. Namely, the Trump administration took several executive actions, including the issuance of a number of Executive Orders, that could impose significant burdens on, or otherwise materially delay, the FDA’s ability to engage in routine oversight activities such as implementing statutes through rulemaking, issuance of guidance, and review and approval of marketing applications. It is difficult to predict whether or how these orders will be implemented, or whether they will be rescinded and replaced under the Biden administration. The policies and priorities of the new administration are unknown and could materially impact the regulations governing our products.

On May 25, 2017, the EU Medical Devices Regulation (Regulation 2017/745)entered into force, which repeals and replaces the EU Medical Devices Directive. Unlike directives, which must be implemented into the national laws of the EU member states, regulations are directly applicable (i.e., without the need for adoption of EEA member state laws implementing them) in all EU member states and are intended to eliminate current differences in the regulation of medical devices among EU member states. The Medical Devices Regulation, among other things, is intended to establish a uniform, transparent, predictable and sustainable regulatory framework across the EU for medical devices and ensure a high level of safety and health while supporting innovation.

The Medical Devices Regulation was originally intended to become effective three years after publication, but in April 2020 the transition period was extended by the European Parliament and the Council of the EU by an additional year – until May 26, 2021. Devices lawfully placed on the market pursuant to the EU Medical Devices Directive prior to May 26, 2021 may generally continue to be made available on the market or put into service until May 26, 2025.Once effective, the new regulations will among other things:

These modifications may have an effect on the way we design and manufacture products and how we conduct our business in the EU.

The aforementioned EU rules are generally applicable in the European Economic Area, or EEA, which consists of the 27 EU member states plus Norway, Liechtenstein and Iceland.

Following the end of the “Brexit” Transition Period, from 1 January 2021 onwards, the Medicines and Healthcare Products Regulatory Agency (“MHRA”) will be responsible for the UK medical device market. The new regulations will require medical devices to be registered with the MHRA (but manufacturers will be given a grace period of four to 12 months to comply with the new registration process). Manufacturers based outside the UK will need to appoint a UK Responsible Person to register devices with the MHRA in line with the grace periods. By July 1, 2023, in the UK (England, Scotland, and Wales), all medical devices will require a UKCA (UK Conformity Assessed) mark but CE marks issued by EU Notified Bodies will remain valid until this time. However, UKCA marking alone will not be recognized in the EU. The rules for placing medical devices on the Northern Ireland market will differ from those in the UK.

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Interim, “top-line” and preliminary data from our clinical trials that we announce or publish from time to time 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 interim, top-line or preliminary data from our clinical registries and trials, which is 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 registry, 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 interim, top-line or preliminary results that we report may differ from future results of the same registry, study or trial, or different conclusions or considerations may qualify such results, once additional data have been received and fully evaluated. Interim, top-line or preliminary data also remain subject to audit and verification procedures that may result in the final data being materially different from the interim, top-line or preliminary data we previously published. As a result, interim, top-line and preliminary data should be viewed with caution until the final data are available.

From time to time, we may also disclose interim data from our preclinical studies and clinical trials. 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 differences between interim data and final data could significantly harm our business prospects. Further, disclosure of interim data by us or by our competitors 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 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 interim top-line or preliminary data that we report differ from actual results, or if others, including regulatory authorities, disagree with the conclusions reached, our ability to obtain approval for, and commercialize, our products and product candidates may be harmed, which could harm our business, operating results, prospects or financial condition.

Changes in funding for, or disruptions caused by global health concerns impacting, the FDA and other government agencies could hinder their ability to hire and retain key leadership and other personnel, or otherwise prevent new products and services from being developed, cleared or approved or commercialized in a timely manner, 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, statutory, regulatory, and policy changes and other events that may otherwise affect the FDA’s ability to perform routine functions. Average review times at the FDA have fluctuated in recent years as a result. In addition, government funding of other government agencies 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 devices to be reviewed and/or approved or cleared by necessary government agencies, which would adversely affect our business. For example, over the last several years, including for 35 days beginning on December 22, 2018, the U.S. government has shut down several times and certain regulatory agencies, such as the FDA, have had to furlough critical FDA employees and stop critical activities. Separately, in response to the COVID-19 pandemic, on March 10, 2020, the FDA announced its intention to postpone inspections of foreign manufacturing facilities and products, and on March 18, 2020, the FDA temporarily postponed routine surveillance inspections of domestic manufacturing facilities. Other regulatory authorities may adopt similar restrictions or other policy measures in response to the COVID-19 pandemic. Subsequently, on July 10, 2020, the FDA announced its intention to resume certain on-site inspections of domestic manufacturing facilities subject to a risk-based prioritization system. The FDA intends to use this risk-based assessment system to identify the categories of regulatory activity that can occur within a given

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geographic area, ranging from mission critical inspections to resumption of all regulatory activities. If a prolonged government shutdown occurs, or if global health concerns continue to prevent the FDA or other regulatory authorities from conducting business as usual or conducting inspections, reviews or other regulatory activities, it could significantly impact the ability of the FDA to timely review and process our regulatory submissions, which could have a material adverse effect on our business.

The clinical trial process is lengthy and expensive with uncertain outcomes. We have limited data and experience regarding the safety and efficacy of our products. Results of earlier studies may not be predictive of future clinical trial results, or the safety or efficacy profile for such products.

Clinical testing is difficult to design and implement, can take many years, can be expensive and carries uncertain outcomes. We are currently enrolling patients in our CLOUT and FLASH registries and may in the future conduct additional clinical trials for our future products. The results of preclinical studies and clinical trials of our products conducted to date and ongoing or future studies and trials of our current, planned or future products may not be predictive of the results of later clinical trials, and interim results of a clinical trial do not necessarily predict final results. Our interpretation of data and results from our clinical trials do not ensure that we will achieve similar results in future clinical trials. In addition, preclinical and clinical data are often susceptible to various interpretations and analyses, and many companies that have believed their products performed satisfactorily in preclinical studies and earlier clinical trials have nonetheless failed to produce strong results in later clinical trials. Products in later stages of clinical trials may fail to show the desired safety and efficacy despite having progressed through nonclinical studies and earlier clinical trials. We incur substantial expense for, and devote significant time to, clinical trials but cannot be certain that the trials will continue to result in commercial revenue. Failure can occur at any stage of clinical testing. Our clinical trials may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional clinical and non-clinical testing in addition to those we have planned.

The initiation and completion of any of clinical trials may be prevented, delayed, or halted for numerous reasons. We may experience delays in our ongoing clinical trials for a number of reasons, which could adversely affect the costs, timing or successful completion of our clinical trials, including related to the following:

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In addition, disruptions caused by the COVID-19 pandemic may increase the likelihood that we encounter such difficulties or delays in our planned and ongoing clinical trials. For example, since the outbreak of the COVID-19 pandemic, we have observed a decrease in new patient enrollment in our registries. If COVID-19 continues to spread, we may experience disruptions that could have a material adverse impact on our clinical trial plans and timelines, including:

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Any of these occurrences may significantly harm our business, financial condition and prospects. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of our product candidates.

Patient enrollment in clinical trials and completion of patient follow-up depend on many factors, including the size of the patient population, the nature of the trial protocol, the proximity of patients to clinical sites, the eligibility criteria for the clinical trial, patient compliance, competing clinical trials and clinicians’ and patients’ perceptions as to the potential advantages of the product being studied in relation to other available therapies, including any new treatments that may be approved for the indications we are investigating. For example, patients may be discouraged from enrolling in our clinical trials if the trial protocol requires them to undergo extensive post-treatment procedures, monitoring or follow-up to assess the safety and efficacy of a product candidate, or they may be persuaded to participate in contemporaneous clinical trials of a competitor’s product candidate. In addition, patients participating in our clinical trials may drop out before completion of the trial or experience adverse medical events unrelated to our products. Delays in patient enrollment or failure of patients to continue to participate in a clinical trial may delay commencement or completion of the clinical trial, cause an increase in the costs of the clinical trial and delays, or result in the failure of the clinical trial.

Clinical trials must be conducted in accordance with the laws and regulations of the FDA and other applicable regulatory authorities’ legal requirements, regulations or guidelines, and are subject to oversight by these governmental agencies and IRBs at the medical institutions where the clinical trials are conducted. In addition, clinical trials must be conducted with supplies of our devices produced under current good manufacturing practice, or cGMP, requirements and other regulations. Furthermore, we may rely on CROs, and clinical trial sites to ensure the proper and timely conduct of our clinical trials and we may have limited influence over their actual performance. We depend on our collaborators and on medical institutions and CROs to conduct our clinical trials in compliance with good clinical practice, or GCP, requirements. To the extent our collaborators or the CROs fail to enroll participants for our clinical trials, fail to conduct the study to GCP standards or are delayed for a significant time in the execution of trials, including achieving full enrollment, we may be affected by increased costs, program delays or both. In addition, clinical trials that are conducted in countries outside the United States may subject us to further delays and expenses as a result of increased shipment costs, additional regulatory requirements and the engagement of non-U.S. CROs, as well as expose us to risks associated with clinical investigators who are unknown to the FDA, and different standards of diagnosis, screening and medical care.

Even if our future products are cleared or approved in the United States, commercialization of our products in foreign countries would require clearance or approval by regulatory authorities in those countries. Clearance or approval procedures vary among jurisdictions and can involve requirements and administrative review periods different from, and greater than, those in the United States, including additional preclinical studies or clinical trials. Any of these occurrences could have an adverse effect on our business, financial condition and results of operations.

We are subject to certain federal, state and foreign fraud and abuse laws and physician payment transparency laws that could subject us to substantial penalties. Additionally, any challenge to or investigation into our practices under these laws could cause adverse publicity and be costly to respond to, and thus could harm our business.

There are numerous U.S. federal and state, as well as foreign, laws pertaining to healthcare fraud and abuse, including anti-kickback, false claims and physician transparency payment laws. Our business practices and relationships with providers are subject to scrutiny under these laws. The healthcare laws and regulations that may affect our ability to operate include, but are not limited to:

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These laws and regulations, among other things, constrain our business, marketing and other promotional and research activities by limiting the kinds of financial arrangements, including sales programs, we may have with hospitals, physicians or other potential purchasers of our products. We have entered into consulting agreements with

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physicians, including some who have ownership interests in us, which could be viewed as influencing the purchase of or use of our products in procedures they perform. Compensation under some of these arrangements includes the provision of stock or stock options. Due to the breadth of these laws, the narrowness of statutory exceptions and regulatory safe harbors available, and the range of interpretations to which they are subject, it is possible that some of our current or future practices might be challenged under one or more of these laws.

Any action brought against us for violations of these laws or regulations, even if successfully defended, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business. We may be subject to private qui tam actions brought by individual whistleblowers on behalf of the federal or state governments, with potential liability under the federal False Claims Act including mandatory treble damages and significant per-claim penalties.

To enforce compliance with the healthcare regulatory laws, certain enforcement bodies have recently increased their scrutiny of interactions between healthcare companies and healthcare providers, which has led to a number of investigations, prosecutions, convictions and settlements in the healthcare industry. Responding to investigations can be time-and resource-consuming and can divert management’s attention from the business. Additionally, as a result of these investigations, healthcare providers and entities may have to agree to additional compliance and reporting requirements as part of a consent decree or corporate integrity agreement. Any such investigation or settlement could increase our costs or otherwise have an adverse effect on our business, financial condition and results of operations. Even an unsuccessful challenge or investigation into our practices could cause adverse publicity, and be costly to respond to.

Our activities, including those relating to providing billing, coding, coverage and reimbursement information about procedures using our products to our customers and the sale and marketing of our products, may be subject to scrutiny under these laws. The growth of our business and sales organization and our expansion outside of the United States may increase the potential of violating these laws or our internal policies and procedures. Any action brought against us for violation of these or other laws or regulations, even if we successfully defend against it, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business. If our operations are found to be in violation of any of the federal, state and foreign laws described above or any other current or future fraud and abuse or other healthcare laws and regulations that apply to us, we may be subject to significant penalties, including significant criminal, civil, and administrative penalties, damages, fines, exclusion from participation in government programs, such as Medicare and Medicaid, imprisonment, contractual damages, reputation harm and disgorgement and we could be required to curtail, restructure or cease our operations. Any of the foregoing consequences will negatively affect our business, financial condition and results of operations.

We are subject to governmental regulations and other legal obligations, particularly related to privacy, data protection and information security, and we are subject to consumer protection laws that regulate our marketing practices and prohibit unfair or deceptive acts or practices. Our actual or perceived failure to comply with such obligations could harm our business. Ensuring compliance with such laws could also impair our efforts to maintain and expand our customer base, and thereby decrease our revenue.

In the conduct of our business, we may at times process personal data, including health-related personal data. The U.S. federal government and various states have adopted or proposed laws, regulations, guidelines and rules for the collection, distribution, use and storage of personal information of individuals. We may also be subject to U.S. federal rules, regulations and guidance concerning data security for medical devices, including guidance from the FDA. Further, HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH Act, and their respective implementing regulations, impose requirements on certain covered healthcare providers, health plans and healthcare clearinghouses as well as their business associates that perform services for them that involve individually identifiable health information, relating to the privacy, security and transmission of individually identifiable health information without appropriate authorization, including mandatory contractual terms as well as directly applicable privacy and security standards and requirements. Failure to comply with the HIPAA privacy and security standards can result in significant civil monetary penalties, and, in certain circumstances, criminal penalties with fines and/or imprisonment. State attorneys general can also bring a civil action to enjoin a HIPAA violation or to obtain statutory damages on behalf of residents of his or her state.

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According to the Federal Trade Commission, or the FTC, failing to take appropriate steps to keep consumers’ personal information secure constitutes unfair acts or practices in or affecting commerce in violation of Section 5(a) of the Federal Trade Commission Act. The FTC expects a company’s data security measures to be reasonable and appropriate in light of the sensitivity and volume of consumer information it holds, the size and complexity of its business, and the cost of available tools to improve security and reduce vulnerabilities. Individually identifiable health information is considered sensitive data that merits stronger safeguards. State privacy and security laws vary from state to state and, in some cases, can impose more restrictive requirements than U.S. federal law.

In addition, certain state and non-US laws, such as the GDPR, govern the privacy and security of health-related and other personal information in certain circumstances, some of which are more stringent than U.S. federal law and many of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts. Failure to comply with these laws, where applicable, can result in the imposition of significant civil and/or criminal penalties and private litigation. Where state laws are more protective, we must comply with the stricter provisions. In addition to fines and penalties that may be imposed for failure to comply with state law, some states also provide for private rights of action to individuals for misuse of personal information. For example, California enacted the CCPA on June 28, 2018, which went into effect on January 1, 2020. The CCPA creates individual privacy rights for California consumers and increases the privacy and security obligations of entities handling certain personal data. The CCPA provides for civil penalties for violations, as well as a private right of action for data breaches that is expected to increase data breach litigation. The CCPA may increase our compliance costs and potential liability, and many similar laws have been proposed at the federal level and in other states. Further, the CPRA recently passed in California. The CPRA will impose additional data protection obligations on covered businesses, including additional consumer rights processes, limitations on data uses, new audit requirements for higher risk data, and opt outs for certain uses of sensitive data. It will also create a new California data protection agency authorized to issue substantive regulations and could result in increased privacy and information security enforcement. The majority of the provisions will go into effect on January 1, 2023, and additional compliance investment and potential business process changes may be required. In Europe, the GDPR went into effect in May 2018 and introduces strict requirements for processing the personal data of individuals within the EEA. Companies that must comply with the GDPR face increased compliance obligations and risk, including more robust regulatory enforcement of data protection requirements and potential fines for noncompliance of up to €20 million or 4% of the annual global revenue of the noncompliant company, whichever is greater. Among other requirements, the GDPR regulates transfers of personal data subject to the GDPR to third countries that have not been found to provide adequate protection to such personal data, including the United States, and the efficacy and longevity of current transfer mechanisms between the European Union and the United States remains uncertain. For example, in 2016, the European Union and United States agreed to a transfer framework for data transferred from the European Union to the United States, called the Privacy Shield, but the Privacy Shield was invalidated in July 2020 by the Court of Justice of the European Union. Further, from January 1, 2021, companies have to comply with the GDPR and also the United Kingdom GDPR, or the UK GDPR, which, together with the amended United Kingdom Data Protection Act 2018, retains the GDPR in United Kingdom national law. The UK GDPR mirrors the fines under the GDPR, i.e., fines up to the greater of €20 million (£17.5 million) or 4% of global turnover. The relationship between the United Kingdom and the European Union in relation to certain aspects of data protection law remains unclear, and it is unclear how United Kingdom data protection laws and regulations will develop in the medium to longer term, and how data transfers to and from the United Kingdom will be regulated in the long term. Currently there is a four to six-month grace period agreed in the European Union and United Kingdom Trade and Cooperation Agreement, ending June 30, 2021 at the latest, whilst the parties discuss an adequacy decision. However, it is not clear whether (and when) an adequacy decision may be granted by the European Commission enabling data transfers from European Union member states to the United Kingdom long term without additional measures. These changes may lead to additional costs and increase our overall risk exposure.

Any actual or perceived failure by us or the third parties with whom we work to comply with privacy or security laws, policies, legal obligations or industry standards, or any security incident that results in the unauthorized release or transfer of personally identifiable information, may result in governmental enforcement actions and investigations including by European Data Protection Authorities and U.S. federal and state regulatory authorities, fines and penalties, litigation and/or adverse publicity, including by consumer advocacy groups, and could cause our customers, their patients and other healthcare professionals to lose trust in us, which could harm our reputation and have a material adverse effect on our business, financial condition and results of operations.

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We cannot assure you that any third-party service providers with access to our or our customers’, suppliers’, trial patients’ and employees’ personally identifiable and other sensitive or confidential information in relation to which we are responsible will not breach contractual obligations imposed by us, or that they will not experience data security breaches or attempts thereof, which could have a corresponding effect on our business, including putting us in breach of our obligations under privacy laws and regulations and/or which could in turn adversely affect our business, results of operations and financial condition. We cannot assure you that our contractual measures and our own privacy and security-related safeguards will protect us from the risks associated with the third-party processing, storage and transmission of such information. Increasing use of social media could also give rise to liability, breaches of data security or reputational damage.

Although we work to comply with applicable laws, regulations and standards, our contractual obligations and other legal obligations, these requirements are evolving and may be modified, interpreted and applied in an inconsistent manner from one jurisdiction to another, and may conflict with one another or other legal obligations with which we must comply. Any failure or perceived failure by us or our employees, representatives, contractors, consultants, CROs, collaborators, or other third parties to comply with such requirements or adequately address privacy and security concerns, even if unfounded, could result in additional cost and liability to us, damage our reputation, and adversely affect our business and results of operations.

Our employees, consultants, and other commercial partners may engage in misconduct or other improper activities, including non-compliance with regulatory standards and requirements.

We are exposed to the risk that our employees, consultants, and other commercial partners and business associates may engage in fraudulent or illegal activity. Misconduct by these parties could include intentional, reckless or negligent conduct or other unauthorized activities that violate the regulations of the FDA and other regulators (both domestic and foreign), including those laws requiring the reporting of true, complete and accurate information to such regulators, manufacturing standards, healthcare fraud and abuse laws and regulations in the United States and internationally or laws that require the true, complete and accurate reporting of financial information or data. In particular, sales, marketing and business arrangements in the healthcare industry, including the sale of medical devices, 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. It is not always possible to identify and deter misconduct by our employees, consultants and other third 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 result in the imposition of significant fines or other sanctions, including the imposition of civil, criminal and administrative penalties, damages, monetary fines, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, and curtailment of operations, any of which could adversely affect our business, financial condition and results of operations. Whether or not we are successful in defending against such actions or investigations, we could incur substantial costs, including legal fees and reputational harm, and divert the attention of management in defending ourselves against any of these claims or investigations.

Compliance with environmental laws and regulations could be expensive, and the failure to comply with these laws and regulations could subject us to significant liability.

Our research, development and manufacturing operations involve the use of hazardous substances, such as isopropyl alcohol and various adhesives. We are subject to a variety of federal, state, local and foreign environmental laws and regulations relating to the storage, use, handling, generation, manufacture, treatment, discharge and disposal of, hazardous substances. Our products may also contain hazardous substances, and they are subject laws and regulations relating to labelling requirements and to their sale, collection, recycling, treatment, storage and disposal. Compliance with these laws and regulations may be expensive and noncompliance could result in substantial fines and penalties. Environmental laws and regulations also impose liability for the remediation of releases of hazardous substances into the environment and for personal injuries resulting from exposure to hazardous substances, and they can give rise to substantial remediation costs and to third-party claims, including for property

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damage and personal injury. Liability under environmental laws and regulations can be joint and several and without regard to fault or negligence, and they tend to become more stringent over time, imposing greater compliance costs and increased risks and penalties associated with violations. We cannot assure you that violations of these laws and regulations, or releases of or exposure to hazardous substances, will not occur in the future or have not occurred in the past, including as a result of human error, accidents, equipment failure or other causes. The costs of complying with environmental laws and regulations, and liabilities that may be imposed for violating them, or for remediation obligations or responding to third-party claims, could negatively affect our business, financial condition and results of operations.

Healthcare policy changes, including recently enacted legislation reforming the U.S. healthcare system, could harm our business, financial condition and results of operations.

In the United States, there have been and continue to be a number of legislative initiatives to contain healthcare costs. Federal and state lawmakers regularly propose and, at times, enact legislation that would result in significant changes to the healthcare system, some of which are intended to contain or reduce the costs of medical products and services. Current and future legislative proposals to further reform healthcare or reduce healthcare costs may limit coverage of or lower reimbursement for the procedures associated with the use of our products. The cost containment measures that payors and providers are instituting and the effect of any healthcare reform initiative implemented in the future could impact our revenue from the sale of our products.

By way of example, the Affordable Care Act, or ACA, made a number of substantial changes in the way healthcare is financed by both governmental and private insurers. Among other ways in which it may affect our business, the ACA:

Since its enactment, there have been 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. By way of example, the Tax Cuts and Jobs Act of 2017, or TCJA, was enacted, which, among other things, removes penalties for not complying with the individual mandate to carry health insurance. On December 14, 2018, a U.S. District Court Judge in the Northern District of Texas (Texas District Court Judge) ruled that the individual mandate is a critical and inseverable feature of the ACA, and therefore, because it was repealed as part of the TCJA, the remaining provisions of the ACA are invalid as well. On December 18, 2019, the U.S. Court of Appeals for the 5th Circuit upheld the District Court ruling that the individual mandate was unconstitutional and remanded the case back to the District Court to determine whether the remaining provisions of the Affordable Care Act are invalid as well. The U.S. Supreme Court is currently reviewing the case, although it is unclear how the Supreme Court will rule. It is also unclear how other efforts to challenge, repeal or replace the ACA will impact the law or our business. Any expansion in the government’s role in the U.S. healthcare industry may result in decreased profits to us, lower reimbursement by payors for procedures using our FlowTriever system and/or ClotTriever system, and/or reduced medical procedure volumes, any of which may have a material adverse effect on our business, financial condition or results of operations.

In addition, other legislative changes have been proposed and adopted since the Affordable Care Act was enacted. The Budget Control Act of 2011, among other things, reduced Medicare payments to providers by 2% per fiscal year, effective on April 1, 2013 and, due to subsequent legislative amendments to the statute, will remain in effect through 2030, with the exception of a temporary suspension from May 1, 2020 through March 31, 2021, unless additional Congressional action is taken. The American Taxpayer Relief Act of 2012, among other things, further reduced Medicare payments to several providers, including hospitals, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. In addition, the Medicare

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Access and CHIP Reauthorization Act of 2015, or MACRA, enacted on April 16, 2015, repealed the formula by which Medicare made annual payment adjustments to physicians and replaced the former formula with fixed annual updates and a new system of incentive payments that are based on various performance measures and physicians’ participation in alternative payment models such as accountable care organizations. It is unclear what effect new quality and payment programs, such as MACRA, may have on our business, financial condition, results of operations or cash flows.

We expect additional state and federal healthcare policies and reform measures to be adopted in the future, any of which could limit reimbursement for healthcare products and services or otherwise result in reduced demand for our FlowTriever and/or ClotTriever or additional pricing pressure and have a material adverse effect on our industry generally and on our customers. We cannot predict what other healthcare programs and regulations will ultimately be implemented at the federal or state level or the effect of any future legislation or regulation in the United States may negatively affect our business, financial condition and results of operations. The continuing efforts of the government, insurance companies, managed care organizations and other payors of healthcare services to contain or reduce costs of healthcare may adversely affect:

Any changes of, or uncertainty with respect to, future coverage or reimbursement rates could affect demand for our FlowTriever system and/or ClotTriever system, which in turn could impact our ability to successfully commercialize these devices and could have a material adverse effect on our business, financial condition and results of operations.

Risks Related to Ownership of Our Common Stock

The price of our common stock may fluctuate substantially or may decline regardless of our operating performance and you could lose all or part of your investment.

The market price of our common stock may be highly volatile and may fluctuate or decline substantially as a result of a variety of factors, some of which are beyond our control or are related in complex ways, including:

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In addition, the trading prices for common stock of other medical device companies have been highly volatile as a result of the COVID-19 pandemic. The COVID-19 outbreak continues to rapidly evolve. The extent to which the outbreak may impact our business will depend on future developments, which are highly uncertain and cannot be predicted with confidence.

In recent years, the stock markets generally have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of listed companies. Broad market and industry factors may significantly affect the market price of our common stock, regardless of our actual operating performance.

In addition, in the past, stockholders have instituted securities class action litigation following periods of market volatility. If we were to become involved in securities litigation, it could subject us to substantial costs, divert resources and the attention of management from our business and harm our business, results of operations, financial condition and reputation. These factors may materially and adversely affect the market price of our common stock.

We are an emerging growth company and we cannot be certain if the reduced disclosure requirements applicable to us will make our common stock less attractive to investors.

We are an “emerging growth company,” as defined in the JOBS Act, and we expect to take advantage of certain exemptions and relief from various reporting requirements that are applicable to other public companies that are not emerging growth companies. In particular, while we are an emerging growth company, we will not be required to comply with the auditor attestation requirements of Section 404(b) of the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act; we will be exempt from any rules that could be adopted by the Public Company Accounting Oversight Board requiring mandatory audit firm rotations or a supplement to the auditor’s report on financial statements; we will be subject to reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements; and we will not be required to hold nonbinding advisory votes on executive compensation or stockholder approval of any golden parachute payments not previously approved.

In addition, while we are an emerging growth company we can take advantage of an extended transition period for complying with new or revised accounting standards. This allows an emerging growth company to delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to take advantage of this extended transition period and, as a result, our operating results and financial statements may not be comparable to the operating results and financial statements of companies who have adopted the new or revised accounting standards.

We will remain an emerging growth company until the earlier of (1) December 31, 2025, the fiscal year-end following the fifth anniversary of the completion of our IPO, (2) the last day of the fiscal year (a) in which we have total annual gross revenue of at least $1.07 billion or (b) in which we are deemed to be a large accelerated filer, which means the market value of our common stock that is held by non- affiliates exceeds $700 million as of the prior June 30th and (3) the date on which we have issued more than $1.0 billion in non-convertible debt during the prior three-year period.

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Investors may find our common stock less attractive to the extent we rely on the exemptions and relief granted by the JOBS Act. 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 decline or become more volatile.

Our directors, officers and principal stockholders have significant voting power and may take actions that may not be in the best interests of our other stockholders.

As of December 31, 2020, our officers, directors and principal stockholders each holding more than 5% of our common stock collectively control approximately 48% of our outstanding common stock. As a result, these stockholders, if they act together, will be able to control the management and affairs of the Company and most matters requiring stockholder approval, including the election of directors and approval of significant corporate transactions. This concentration of ownership may have the effect of delaying or preventing a change of control and might adversely affect the market price of our common stock. This concentration of ownership may not be in the best interests of our other stockholders.

We have previously identified material weaknesses in our internal control over financial reporting and may identify material weaknesses in the future or otherwise fail to maintain an effective system of internal controls, as a result of which, we may not be able to accurately report our financial condition or results of operations which may adversely affect investor confidence in us and, as a result, the value of our common stock.

Under Section 404 of the Sarbanes-Oxley Act, we will be required to furnish a report by management on, among other things, the effectiveness of our internal control over financial reporting beginning with our Annual Report on Form 10-K for the year ended December 31, 2021. This assessment will need to include disclosure of any material weaknesses identified by our management in our internal control over financial reporting. A material weakness is a deficiency or combination of deficiencies in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of a company’s annual and interim financial statements will not be detected or prevented on a timely basis. In addition, our independent registered public accounting firm will be required to attest to the effectiveness of our internal control over financial reporting in our first annual report required to be filed with the SEC following the date we are no longer an “emerging growth company”.

We are further enhancing internal controls, processes and related documentation necessary to perform the evaluation needed to comply with Section 404. We may not be able to complete our evaluation, testing and any required remediation in a timely fashion. During the evaluation and testing process, if we identify one or more material weaknesses in our internal control over financial reporting, we will be unable to assert that our internal controls are effective.

In connection with the preparation of our financial statements for the year ended December 31, 2019, we concluded there were material weaknesses in our internal controls over financial reporting. The material weaknesses that were identified related to the segregation of duties throughout various financial processes and our documentation of internal controls. While we believe we have remediated the previously identified material weaknesses, we may have future material weaknesses.

We cannot assure you that there will not be material weaknesses or significant deficiencies in our internal control over financial reporting in the future. Any failure to maintain internal control over financial reporting could severely inhibit our ability to accurately report our financial condition or results of operations. The effectiveness of our controls and procedures may be limited by a variety of factors, including:

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Our management and independent registered public accounting firm did not perform an evaluation of our internal control over financial reporting during any period in accordance with the provisions of Sarbanes-Oxley Act. Had we performed an evaluation and had our independent registered public accounting firm performed an audit of our internal control over financial reporting in accordance with the provisions of Sarbanes-Oxley Act, additional control deficiencies amounting to material weaknesses may have been identified. We are in the very early stages of the costly and challenging process of compiling the system and processing documentation necessary to perform the evaluation needed to comply with Section 404(a) of Sarbanes-Oxley Act. We may not be able to complete our evaluation, testing or any required remediation in a timely fashion. If we fail to comply with Section 404(a) or to remedy these material weaknesses or identify new material weaknesses by the time we have to issue that report, we will not be able to certify that our internal controls over financial reporting are effective, which may cause investors to lose confidence in our financial statements, and the trading price of our common stock may decline. If we fail to remedy any material weakness, our financial statements may be inaccurate, our access to the capital markets may be restricted and the trading price of our common stock may suffer.

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 provide reasonable assurance 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 U.S. Securities and Exchange Commission. We believe that any disclosure 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 realities 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. For example, we define a procedure as any instance in which a physician treats DVT or PE using our products. We estimate the number of procedures performed based on records created by our sales representatives. However, this metric has limitations as we only have records for the procedures where our sales representatives have notice that a procedure has been performed. Even when notified, our sales representatives may not accurately record, be delayed in recording, or not record, the procedures, which may not be detected or corrected by our disclosure controls and procedures in a timely manner or at all. As a result, the estimated number of procedures does not reflect the actual number of procedures performed using our products, which may be lower or higher for each particular period.

Provisions in our corporate charter documents and under Delaware law could make an acquisition of us more difficult and may prevent attempts by our stockholders to replace or remove our current management.

Provisions in our amended and restated certificate of incorporation and our amended and restated bylaws may discourage, delay or prevent a merger, acquisition or other change in control of us that stockholders may consider favorable, including transactions in which stockholders might otherwise receive a premium for their shares. These provisions could also limit the price that investors might be willing to pay in the future for shares of our common stock, thereby depressing the market price of our common stock. In addition, 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. Because our board of directors is responsible for appointing the members of our management team, these provisions could in turn affect any attempt by our stockholders to replace current members of our management team. Among others, these provisions include that:

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Moreover, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporation Law, which prohibits a person who owns in excess of 15% of our outstanding voting stock from merging or combining with us for a period of three years after the date of the transaction in which the person acquired in excess of 15% of our outstanding voting stock, unless the merger or combination is approved in a prescribed manner.

Our amended and restated certificate of incorporation provides that the Court of Chancery of the State of Delaware will be the sole and exclusive forum for substantially all disputes between us and our stockholders, which could limit our stockholders’ abilities to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our amended and restated certificate of incorporation specifies that, unless we consent in writing to the selection of an alternative forum, to the fullest extent permitted by law, the Court of Chancery of the State of Delaware will be the sole and exclusive forum for most legal actions involving actions brought against us by stockholders; provided that, the exclusive forum provision will not apply to suits brought to enforce any liability or duty created by the Exchange Act or any other claim for which the federal courts have exclusive jurisdiction; and provided further that, if and only if the Court of Chancery of the State of Delaware dismisses any such action for lack of subject matter jurisdiction, such action may be brought in another state or federal court sitting in the State of Delaware. Our amended and restated certificate of incorporation also provides that the federal district courts of the United States of America will be the exclusive forum for the resolution of any complaint asserting a cause of action against us or any of our directors, officers, employees or agents and arising under the Securities Act. Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and to have consented to the provisions of our amended and restated certificate of incorporation described above. Under the Securities Act, federal and state courts have concurrent jurisdiction over all suits brought to enforce any duty or liability created by the Securities Act, and investors cannot waive compliance with the federal securities laws and the rules and regulations thereunder. Accordingly, there is uncertainty as to whether a court would enforce such a forum selection provision as written in connection with claims arising under the Securities Act. We believe these provisions may benefit us by providing increased consistency in the application of Delaware law and federal securities laws by chancellors and judges, as applicable, particularly experienced in resolving corporate disputes, efficient administration of cases on a more expedited schedule relative to other forums and protection against the

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burdens of multi-forum litigation. However, these provisions may have the effect of discouraging lawsuits against our directors, officers, employees and agents as it may limit any stockholder’s ability to bring a claim in a judicial forum that such stockholder finds favorable for disputes with us or our directors, officers, employees or agents. The enforceability of similar choice of forum provisions in other companies’ certificates of incorporation has been challenged in legal proceedings, and it is possible that, in connection with any applicable action brought against us, a future court could find the choice of forum provisions contained in our restated certificate of incorporation to be inapplicable or unenforceable in such action. If a court were to find the choice of forum provision contained in our amended and restated certificate of incorporation to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could adversely affect our business, financial condition or results of operations.

Because we do not anticipate paying any cash dividends on our capital stock in the foreseeable future, capital appreciation, if any, will be your sole source of gain.

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all of our future earnings, if any, to finance the growth and development of our business. Any determination to pay dividends in the future will be at the discretion of our board of directors and may be restricted by any future debt or preferred securities or future debt agreements we may enter into. As a result, capital appreciation, if any, of our common stock will be your sole source of gain for the foreseeable future.

General Risk Factors

We have incurred and expect to continue to incur significant additional costs as a result of being a public company, and our management is required to devote substantial time to compliance with our public company responsibilities and corporate governance practices.

As a public company. we have incurred and expect to continue to incur costs associated with corporate governance requirements that are applicable to us as a public company, including rules and regulations of the U.S. Securities and Exchange Commission, under the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, and the Exchange Act, as well as the rules of the Nasdaq Global Select Market. These rules and regulations significantly increase our accounting, legal and financial compliance costs and make some activities more time-consuming. We expect such expenses to further increase after we are no longer an emerging growth company. We also expect these rules and regulations to make it more expensive for us to maintain directors’ and officers’ liability insurance. As a result, it may be more difficult for us to attract and retain qualified persons to serve on our board of directors or as executive officers. Furthermore, these rules and regulations increase our legal and financial compliance costs and make some activities more time-consuming and costly. Accordingly, increases in costs incurred as a result of being a publicly traded company may adversely affect our business, financial condition and results of operations.

Securities analysts may not publish favorable research or reports about our business or may publish no information at all, which could cause our stock price or trading volume to decline.

Our stock price and trading volume may be heavily influenced by the way analysts and investors interpret our financial information and other disclosures. If securities or industry analysts do not publish research or reports about our business, delay publishing reports about our business, or publish negative reports about our business, regardless of accuracy, our common stock price and trading volume could decline.

The trading market for our common stock is influenced to some extent by the research and reports that industry or financial analysts publish about us and our business. We do not control these analysts. We may be slow to attract research coverage and the analysts who publish information about our common stock will have had relatively little experience with us or our industry, which could affect their ability to accurately forecast our results and could make it more likely that we fail to meet their estimates. In the event we obtain securities or industry analyst coverage, if any of the analysts who cover us provide inaccurate or unfavorable research or issue an adverse opinion regarding our stock price, our stock price could decline. If one or more of these analysts cease coverage of us or fail to publish reports covering us regularly, we could lose visibility in the market, which in turn could cause our stock price or trading volume to decline.

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Even if our common stock is actively covered by analysts, we do not have any control over the analysts or the measures that analysts or investors may rely upon to forecast our future results. Over-reliance by analysts or investors on any particular metric to forecast our future results may lead to forecasts that differ significantly from our own.

If our estimates or judgments relating to our critical accounting policies are based on assumptions that change or prove to be incorrect, our operating results could fall below our publicly announced guidance or the expectations of securities analysts and investors, resulting in a decline in the market price of our common stock.

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in our financial statements and accompanying notes. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets, liabilities, equity, revenue and expenses that are not readily apparent from other sources. In connection with our adoption and implementation of the new revenue accounting standard, management made judgments and assumptions based on our interpretation of the new standard. The new revenue standard is principle-based and interpretation of those principles may vary from company to company based on their unique circumstances. It is possible that interpretation, industry practice and guidance may evolve. If our assumptions change or if actual circumstances differ from our assumptions, our operating results may be adversely affected and could fall below our publicly announced guidance or the expectations of securities analysts and investors, resulting in a decline in the market price of our common stock.

Our insurance policies are expensive and protect us only from some business risks, which leaves us exposed to significant uninsured liabilities.

We do not carry insurance for all categories of risk that our business may encounter. Although we carry product liability insurance in the United States, we can give no assurance that such coverage will be available or adequate to satisfy any claims. Product liability insurance is expensive, subject to significant deductibles and exclusions, and may not be available on acceptable terms, if at all. If we are unable to obtain or maintain insurance at an acceptable cost or on acceptable terms with adequate coverage or otherwise protect against potential product liability claims, we could be exposed to significant liabilities. A product liability claim, recall or other claim with respect to uninsured liabilities or for amounts in excess of insured liabilities could have a material adverse effect on our business, financial condition and results of operations. Defending a suit, regardless of its merit or eventual outcome, could be costly, could divert management’s attention from our business and might result in adverse publicity, which could result in reduced acceptance of our products in the market, product recalls or market withdrawals.

We do not carry specific hazardous waste insurance coverage, and our insurance policies generally exclude coverage for damages and fines arising from hazardous waste exposure or contamination. Accordingly, in the event of contamination or injury, we could be held liable for damages or be penalized with fines in an amount exceeding our resources, and our clinical trials or regulatory approvals could be suspended.

We also expect that operating as a public company will make it more difficult and more expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage. As a result, it may be more difficult for us to attract and retain qualified people to serve on our board of directors, our board committees or as executive officers. We do not know, however, if we will be able to maintain existing insurance with adequate levels of coverage. Any significant uninsured liability may require us to pay substantial amounts, which would negatively affect our business, financial condition and results of operations.

The failure of third parties to meet their contractual, regulatory, and other obligations could adversely affect our business.

We rely on suppliers, vendors, outsourcing partners, consultants, alliance partners and other third parties to research, develop, manufacture and commercialize our products and manage certain parts of our business. Using these third parties poses a number of risks, such as: (i) they may not perform to our standards or legal requirements; (ii) they may not produce reliable results; (iii) they may not perform in a timely manner; (iv) they may not maintain confidentiality of our proprietary information; (v) disputes may arise with respect to ownership of rights to

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technology developed with our partners; and (vi) disagreements could cause delays in, or termination of, the research, development or commercialization of our products or result in litigation or arbitration. Moreover, some third parties are located in markets subject to political and social risk, corruption, infrastructure problems and natural disasters, in addition to country-specific privacy and data security risk given current legal and regulatory environments. Failure of third parties to meet their contractual, regulatory, and other obligations may materially affect our business.

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

We rely on trademarks, service marks, tradenames and brand names to distinguish our products from the products of our competitors, and have registered or applied to register these trademarks. We cannot assure you that our trademark applications will be approved. During trademark registration proceedings, we may receive rejections. Although we are given an opportunity to respond to those rejections, we may be unable to overcome such rejections. In addition, in proceedings before the USPTO and comparable agencies in many foreign jurisdictions, third parties are given an opportunity to oppose pending trademark applications and to seek to cancel registered trademarks. Opposition or cancellation proceedings may be filed against our trademarks, and our trademarks may not survive such proceedings. In the event that our trademarks are successfully challenged, we could be forced to rebrand our products, which could result in loss of brand recognition and could require us to devote resources towards advertising and marketing new brands. 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. Certain of our current or future trademarks may become so well known by the public that their use becomes generic and they lose trademark protection. 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, financial condition and results of operations may be adversely affected.

Item 1B. Unresolved Staff Comments.

None.

Item 2. Properties.

Our corporate headquarters, which includes our manufacturing facility, is located in Irvine, California, where we occupy a facility totaling approximately 40,000 square feet under a lease agreement that expires in September 2024. This facility contains dedicated research and development, training, education and manufacturing spaces.

In October 2020, we entered into a ten-year lease for a larger facility in Irvine, California, totaling approximately 120,000 square feet. The new lease is expected to commence in the second quarter of 2021, at which time we will move all of our operations to this new facility. The lease contains two optional extension periods of five years each.

We believe these facilities are sufficient to meet our current and anticipated needs in the near term and that suitable additional space is available as needed to accommodate expansion of our operations and manufacturing and distribution activities.

Item 3. Legal Proceedings.

We are not currently a party to any material legal proceedings. From time to time we may become involved in legal proceedings or investigations which could have an adverse impact on our reputation, business and financial condition and divert the attention of our management from the operation of our business.

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

Our common stock is traded on the Nasdaq Global Select Market under the symbol NARI. Public trading of our common stock began on May 22, 2020. Prior to that, there was no public market for our common stock. The following table sets forth for the periods indicated the high and low sales prices per share of our common stock on the Nasdaq Global Select Market:

Stockholders

As of March 1, 2021, there were approximately 30 holders of record of our common stock. This number does not include stockholders who are beneficial owners, but whose shares are held in street name by brokers and other nominees. This number of holders of record also does not include stockholders whose shares may be held in trust by other entities.

Dividend Policy

We have never declared or paid, and do not anticipate declaring or paying in the foreseeable future, any cash dividends on our capital stock. Any future determination as to the declaration and payment of dividends, if any, will be at the discretion of our board of directors, subject to applicable laws and will depend on then existing conditions, including our financial condition, operating results, contractual restrictions, capital requirements, business prospects, and other factors our board of directors may deem relevant.

Unregistered sales of equity securities

None.

Purchases of equity securities by the issuer and affiliated purchasers

None.

Securities authorized for issuance under equity compensation plans

The information required by this item with respect to our equity compensation plans is incorporated by reference to our definitive proxy statement relating to our 2021 Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year to which this Annual Report on Form 10-K relates.

Stock Performance Graph

The graph below shows a comparison, from May 22, 2020 (the date our common stock commenced trading on the Nasdaq) through December 31, 2020, of the cumulative total return to stockholders of our common stock relative to the Nasdaq Composite Index (“NBI”) and the Nasdaq Biotechnology Index (“IXIC”). The graph assumes that

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$100 was invested in each of our common stock, the Nasdaq Composite and the Nasdaq Biotechnology at their respective closing prices on May 22, 2020 and assumes reinvestment of gross dividends. The stock price performance shown in the graph represents past performance and should not be considered an indication of future stock price performance. This graph is not “soliciting material,” is not deemed “filed” with the SEC and is not to be incorporated by reference into any of our filings under the Securities Act or the Exchange Act, whether made before or after the date hereof and irrespective of any general incorporation language in any such filing.

Item 6. Selected Financial Data.

The consolidated statements of operations data for the fiscal years ended December 31, 2020, 2019, and 2018, and the selected consolidated balance sheets data as of December 31, 2020 and 2019, are derived from our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K.

The selected consolidated balance sheet data as of December 31, 2018 is derived from our audited consolidated financial statements which are not included in this Annual Report on Form 10-K.

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The information set forth below is not necessarily indicative of results of future operations, and should be read in conjunction with Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the Consolidated Financial Statements and related notes included in Part II, Item 8, “Consolidated Financial Statements and Supplementary Data” in this Annual Report on Form 10-K.

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

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and the related notes included in Part II, Item 8 of this Annual Report on Form 10-K.

This Annual Report on Form 10-K contains forward-looking statements within the meaning of Section 27A of the Securities Exchange Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended (“the Exchange Act”). Forward-looking statements are identified by words such as “believe,” “will,” “may,” “estimate,” “continue,” “anticipate,” “intend,” “should,” “plan,” “expect,” “predict,” “could,” “potentially” or the negative of these terms or similar expressions. You should read these statements carefully because they discuss future expectations, contain projections of future results of operations or financial condition, or state other “forward-looking” information. These statements relate to our future plans, objectives, expectations, intentions and financial performance and the assumptions that underlie these statements. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those anticipated in the forward-looking statements. Factors that might cause such a difference include, but are not limited to, those discussed in this report in Part I, Item 1A — “Risk Factors,” and elsewhere in this report. Forward-looking statements are based on our management’s beliefs and assumptions and on information currently available to our management. These statements, like all statements in this report, speak only as of their date, and we undertake no obligation to update or revise these statements in light of future developments. We caution investors that our business and financial performance are subject to substantial risks and uncertainties.

Overview

We are a commercial-stage medical device company focused on developing products to treat and transform the lives of patients suffering from venous diseases. Our initial product offering consists of two minimally-invasive, novel catheter-based mechanical thrombectomy devices. We purpose-built our products for the specific characteristics of the venous system and the treatment of the two distinct manifestations of venous thromboembolism, or VTE – deep vein thrombosis and pulmonary embolism. Our ClotTriever product is FDA-cleared for the treatment of DVT. Our FlowTriever product is the first thrombectomy system FDA-cleared for the treatment of pulmonary embolism, or PE, and is also FDA-cleared for clot in transit in the right atrium.

We believe the best way to treat VTE and improve the quality of life of patients suffering from this disease is to safely and effectively remove the blood clot. With that in mind, we designed and purpose-built our ClotTriever and FlowTriever products to remove large clots from large vessels and eliminate the need for thrombolytic drugs. We believe our products are transformational and could be the catalyst to drive an evolution of treatment for venous diseases, establishing our products as the standard of care for DVT and PE.

We believe our venous-focused commercial organization provides a significant competitive advantage. Our most important relationships are between our sales representatives and our treating physicians, which include interventional cardiologists, interventional radiologists and vascular surgeons. We have developed systems and processes to harness the information gained from these relationships and we leverage this information to rapidly iterate products, introduce and execute physician education and training programs and scale our sales organization. We market and sell our products to hospitals, which are reimbursed by various third-party payors. We have dedicated meaningful resources to building a direct sales force in the United States, and we continue to expand our sales organization through additional sales representatives and territories.

On May 27, 2020, we completed our IPO, which resulted in the issuance and sale of 9,432,949 shares of common stock, including 1,230,384 shares sold pursuant to the exercise of the underwriters’ over-allotment option, at the IPO price of $19.00 per share. We received net proceeds of approximately $163.0 million from the IPO, after deducting underwriters’ discounts and commissions of $12.6 million and offering costs of $3.7 million.

Prior to our IPO, our primary sources of capital were private placements of preferred stock, debt financing arrangements and revenue from sales of our products. Since inception, we had raised a total of approximately $54.2 million in net proceeds from private placements of preferred stock. As of December 31, 2020, we had cash and cash

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equivalents and short-term investments of $164.2 million, no long-term debt outstanding and an accumulated deficit of $27.4 million.

For the year ended December 31, 2020, we generated revenue of $139.7 million, with a gross margin of 90.6% and net income of $13.8 million, compared to revenue of $51.1 million, with a gross margin of 88.4% and net loss of $1.2 million for the year ended December 31, 2019.

COVID-19

In December 2019, a novel strain of coronavirus, SARS-CoV-2, was identified in Wuhan, China. Since then, SARS-CoV-2, and the resulting disease, COVID-19, has spread to most countries, including all 50 states in the United States. In response to the pandemic, numerous state and local jurisdictions imposed and may continue to impose from time to time “shelter-in-place” orders, quarantines, executive orders and similar government orders and restrictions for their residents to control the spread of COVID-19. For example, in the United States, governmental authorities recommended, and in certain cases required, that elective, specialty and other procedures and appointments be suspended or canceled to avoid non-essential patient exposure to medical environments and potential infection with COVID-19 and to focus limited resources and personnel capacity toward the treatment of COVID-19 patients. Similarly, in March 2020, the governor of California, where our headquarters are located, issued a “stay at home” order limiting non-essential activities, travel and business operations. In December 2020, the governor of California issued an additional regional “stay at home” order with tiered restrictions based on each region’s ICU availability. Such orders or restrictions resulted in reduced operations at our headquarters (including our manufacturing facility), work stoppages, slowdowns and delays, travel restrictions and cancellation of events. Taken as a whole, these orders and restrictions significantly decreased the number of procedures performed using our products, particularly during the second quarter of 2020, and otherwise negatively impacted our operations, including new customer procurement and onboarding.

In response to the impact of COVID-19, beginning in the second quarter of 2020, we implemented a variety of measures to help us manage through its impact and position us to resume operations quickly and efficiently once these restrictions were lifted. These measures existed across several operational areas and included:

Despite the negative impacts from COVID-19, for the year ended December 31, 2020, we completed our IPO and approximately 13,200 procedures were performed using our products, compared to approximately 4,600

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procedures in the year ended December 31, 2019. During the second quarter of 2020, we experienced disruptions to our procedure volume beginning in mid-March as a result of COVID-19, and weekly procedure volumes declined by approximately 40% by mid-April when compared to weekly procedure volumes in early March. The decrease in procedure volume impacted DVT procedures and PE procedures relatively equally, with both types of procedures declining during this period. However, we saw a recovery in procedure volume in June that was higher than our pre- COVID-19 peak. During the third and fourth quarters, we saw continued sequential growth beyond previous quarters.

While we are encouraged by our third and fourth quarters results, we are aware that the actual and perceived impact of COVID-19 is changing and cannot be predicted. As a result, we cannot assure you that our recent procedure volumes are indicative of future results or that we will not experience additional negative impacts associated with COVID-19, which could be significant. The COVID-19 pandemic has negatively impacted our business, financial condition and results of operations by significantly decreasing and delaying the number of procedures performed using our products, and we expect the pandemic could continue to negatively impact our business, financial condition and results of operations.

Procedure Volume

We regularly review various operating and financial metrics to evaluate our business, measure our performance, identify trends affecting our business, formulate our business plan and make strategic decisions. We believe the number of procedures performed to treat DVT and PE using our products is an indicator of our ability to drive adoption and generate revenue. We believe this is an important metric for our business; however, we anticipate that additional metrics may become important as our business grows. The following table lists the number of procedures performed in each of the three-month periods as indicated:

Components of our Results of Operations

Revenue

We currently derive all our revenue from the sale of our ClotTriever and FlowTriever products to hospitals in the United States. Our customers typically purchase an initial stocking order of our products and then reorder replenishment product as procedures are performed. No single customer accounted for 10% or more of our revenue during the years ended December 31, 2020, 2019 and 2018. For the year ended December 31, 2020, approximately 55% of our customers used both of our products, 33% used ClotTriever only and 12% used FlowTriever only. We expect revenue to increase in absolute dollars as we expand our sales organization and sales territories, add customers, expand the base of physicians that are trained to use our products, expand awareness of our products with new and existing customers and as physicians perform more procedures using our products. Revenue for ClotTriever and FlowTriever products as a percentage of total revenue is as follows:

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For the year ended December 31, 2020, our blended revenue per procedure was over $9,100. Blended revenue per procedure represents the average of the average selling price per ClotTriever and the average price per FlowTriever procedure.

Cost of Goods Sold and Gross Margin

We manufacture and/or assemble all our products at our facility in Irvine, California. Cost of goods sold consists primarily of the cost of raw materials, components, direct labor and manufacturing overhead. Overhead costs include the cost of quality assurance, material procurement, inventory control, facilities, equipment and operations supervision and management, including stock-based compensation. Cost of goods sold also includes depreciation expense for production equipment and certain direct costs such as shipping costs and royalty expense. Shipping costs billed to customers are reported as a reduction of cost of goods sold. We expect cost of goods sold to increase in absolute dollars as our revenue grows and more of our products are sold, however, we also expect to realize opportunities to increase operating leverage in our manufacturing operations.

We calculate gross margin as gross profit divided by revenue. Our gross margin has been and will continue to be affected by a variety of factors, including average selling prices, product sales mix, production and ordering volumes, manufacturing costs, product yields, headcount and cost-reduction strategies. Our gross margin could fluctuate from quarter to quarter as we introduce new products, adopt new manufacturing processes and technologies, and as we expand internationally.

Treatments using the FlowTriever may involve one or more Triever aspiration catheters and one or more FlowTriever catheters. We charge customers the same price for each FlowTriever procedure, regardless of the number of components used. As a result, changes in the number of components used, the cost of these components and the introduction of additional components can impact our gross margin.

Research and Development Expenses

Research and development, or R&D, expenses consist primarily of engineering, product development, clinical studies to develop and support our products, regulatory expenses, and other costs associated with products that are in development. These expenses include employee compensation, including stock-based compensation, supplies, consulting, prototyping, testing, materials, travel expenses, depreciation and an allocation of facility overhead expenses. Additionally, R&D expenses include costs associated with our clinical trials and registries, including clinical study design, clinical study site initiation and study costs, data management, and internal and external costs associated with our regulatory compliance, including the costs of outside consultants and contractors that assist in the process of submitting and maintaining regulatory filings. We expense R&D costs as incurred. We expect R&D expenses as a percentage of revenue to vary over time depending on the level and timing of our new product development efforts, as well as our clinical development, clinical trials and registries and other related activities.

Selling, General and Administrative Expenses

Selling, general and administrative, or SG&A, expenses consist primarily of compensation for personnel, including stock-based compensation, related to selling and marketing functions, physician education programs, commercial operations and analytics, finance, information technology and human resource functions. Other SG&A expenses include sales commissions, travel expenses, promotional activities, marketing initiatives, market research and analysis, conferences and trade shows, physician training, professional services fees (including legal, audit and tax fees), insurance costs, general corporate expenses and facilities-related expenses. We expect SG&A expenses to continue to increase in absolute dollars as we expand our sales and marketing organization and infrastructure to both drive and support the anticipated growth in revenue and due to additional legal, accounting, insurance and other expenses associated with being a public company.

Interest Income

Interest income consists primarily of interest income earned on our cash and cash equivalents.

100

Interest Expense

Interest expense consists primarily of interest incurred on our outstanding indebtedness and non-cash interest related to the amortization of debt discount and issuance costs associated with our indebtedness.

Change in Fair Value of Warrant Liabilities

Change in fair value of warrant liabilities consists of gains and losses resulting from the remeasurement of the fair value of our preferred stock warrant liabilities at each balance sheet date. Upon the closing of our IPO, our outstanding preferred stock warrants automatically converted into warrants to purchase shares of our common stock. At such time, the final fair value of the warrant liability was reclassified to stockholders’ equity (deficit). We will no longer record any related periodic fair value adjustments.

Results of Operations

Comparison of the years ended December 30, 2020 and 2019

The following table sets forth the components of our unaudited statements of operations in dollars and as percentage of revenue for the periods presented (dollars in thousands):