Histogen Inc. - Quarter Report: 2015 June (Form 10-Q)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2015

OR

FOR THE TRANSITION PERIOD FROM                      TO                     

Commission file number: 001-36003

CONATUS PHARMACEUTICALS INC.

(Exact name of registrant as specified in its charter)

(858) 376-2600

(Registrant’s Telephone Number, Including Area Code)

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  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted 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 and post such files).    Yes  x    No  ¨

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

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

As of August 3, 2015, the registrant had 19,718,720 shares of common stock ($0.0001 par value) outstanding.

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CONATUS PHARMACEUTICALS INC.

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PART I. FINANCIAL INFORMATION

Conatus Pharmaceuticals Inc.

Condensed Balance Sheets

(Unaudited)

See accompanying notes to condensed financial statements.

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Conatus Pharmaceuticals Inc.

Condensed Statements of Operations and Comprehensive Loss

(Unaudited)

See accompanying notes to condensed financial statements.

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Conatus Pharmaceuticals Inc.

Condensed Statements of Cash Flows

(Unaudited)

See accompanying notes to condensed financial statements.

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Conatus Pharmaceuticals Inc.

Notes to Condensed Financial Statements

(Unaudited)

Conatus Pharmaceuticals Inc. (the Company) was incorporated in the state of Delaware on July 13, 2005. The Company is a biotechnology company focused on the development and commercialization of novel medicines to treat liver disease.

As of June 30, 2015, the Company has devoted substantially all of its efforts to product development and has not realized revenues from its planned principal operations.

The Company has a limited operating history, and the sales and income potential of the Company’s business and market are unproven. The Company has experienced net losses since its inception and, as of June 30, 2015, had an accumulated deficit of $108.8 million. The Company expects to continue to incur net losses for at least the next several years. Successful transition to attaining profitable operations is dependent upon achieving a level of revenues adequate to support the Company’s cost structure. If the Company is unable to generate revenues adequate to support its cost structure, the Company may need to raise additional equity or debt financing.

The accompanying unaudited interim condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and the rules and regulations of the Securities and Exchange Commission (SEC) related to a quarterly report on Form 10-Q. Certain information and note disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations. The unaudited interim condensed financial statements reflect all adjustments which, in the opinion of management, are necessary for a fair statement of the results for the periods presented. All such adjustments are of a normal and recurring nature. The operating results presented in these unaudited interim condensed financial statements are not necessarily indicative of the results that may be expected for any future periods. These unaudited interim condensed financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto for the year ended December 31, 2014 included in the Company’s annual report on Form 10-K filed with the SEC on March 13, 2015.

Use of Estimates

The preparation of condensed financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting period. Actual results could differ from those estimates.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents and marketable securities. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to significant risk on its cash. Additionally, the Company established guidelines regarding approved investments and maturities of investments, which are designed to maintain safety and liquidity.

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Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity from the date of purchase of three months or less to be cash equivalents. Cash and cash equivalents include cash in readily available checking and money market accounts.

Marketable Securities

The Company classifies its marketable securities as available-for-sale and records such assets at estimated fair value in the condensed balance sheets, with unrealized gains and losses, if any, reported as a component of other comprehensive income (loss) within the condensed statements of operations and comprehensive loss and as a separate component of stockholders’ equity. The Company classifies marketable securities with remaining maturities greater than one year as current assets because such marketable securities are available to fund the Company’s current operations. The Company invests its excess cash balances primarily in corporate debt securities and money market funds with strong credit ratings. Realized gains and losses are calculated on the specific identification method and recorded as interest income. There were no realized gains and losses for the six-month periods ended June 30, 2015 and 2014.

At each balance sheet date, the Company assesses available-for-sale securities in an unrealized loss position to determine whether the unrealized loss is other-than-temporary. The Company considers factors including: the significance of the decline in value compared to the cost basis, underlying factors contributing to a decline in the prices of securities in a single asset class, the length of time the market value of the security has been less than its cost basis, the security’s relative performance versus its peers, sector or asset class, expected market volatility and the market and economy in general. When the Company determines that a decline in the fair value below its cost basis is other-than-temporary, the Company recognizes an impairment loss in the period in which the other-than-temporary decline occurred. There have been no other-than-temporary declines in the value of marketable securities, as it is more likely than not the Company will hold the securities until maturity or a recovery of the cost basis.

Fair Value of Financial Instruments

The carrying amounts of prepaid and other current assets, accounts payable and accrued expenses are reasonable estimates of their fair value because of the short maturity of these items.

Stock-Based Compensation

Stock-based compensation expense for stock option grants under the Company’s stock option plans is recorded at the estimated fair value of the award as of the grant date and is recognized as expense on a straight-line basis over the requisite service period of the stock-based award. Stock-based compensation expense for employee stock purchases under the Company’s 2013 Employee Stock Purchase Plan (the ESPP) is recorded at the estimated fair value of the purchase as of the plan enrollment date and is recognized as expense on a straight-line basis over the applicable six-month ESPP offering period. The estimation of stock option and ESPP fair value requires management to make estimates and judgments about, among other things, employee exercise behavior, forfeiture rates and volatility of the Company’s common stock. The judgments directly affect the amount of compensation expense that will be recognized.

Property and Equipment

Property and equipment, which consists of furniture and fixtures, computers and office equipment and leasehold improvements, are stated at cost and depreciated over the estimated useful lives of the assets (three to five years) using the straight-line method. Leasehold improvements are amortized over the shorter of their estimated useful lives or the lease term.

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Long-Lived Assets

The Company regularly reviews the carrying value and estimated lives of all of its long-lived assets, including property and equipment, to determine whether indicators of impairment may exist which warrant adjustments to carrying values or estimated useful lives. The determinants used for this evaluation include management’s estimate of the asset’s ability to generate positive income from operations and positive cash flow in future periods, as well as the strategic significance of the assets to the Company’s business objective. Should an impairment exist, the impairment loss would be measured based on the excess of the carrying amount of the asset’s fair value. The Company has not recognized any impairment losses through June 30, 2015.

Research and Development Expenses

All research and development costs are expensed as incurred.

Income Taxes

The Company’s policy related to accounting for uncertainty in income taxes prescribes a recognition threshold and measurement attribute criteria for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. As of December 31, 2014, there are no unrecognized tax benefits included in the condensed balance sheet that would, if recognized, affect the Company’s effective tax rate, and the Company has noted no material changes through June 30, 2015. The Company has not recognized interest and penalties in the condensed balance sheets or condensed statements of operations and comprehensive loss. The Company is subject to U.S. and California taxation. As of December 31, 2014, the Company’s tax years beginning 2005 to date are subject to examination by taxing authorities.

Comprehensive Loss

The Company is required to report all components of comprehensive loss, including net loss, in the condensed financial statements in the period in which they are recognized. Comprehensive loss is defined as the change in equity during a period from transactions and other events and circumstances from nonowner sources, including unrealized gains and losses on marketable securities. Comprehensive gains (losses) have been reflected in the condensed statements of operations and comprehensive loss for all periods presented.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is used in making decisions regarding resource allocation and assessing performance. To date, the Company has viewed its operations and managed its business as one segment operating primarily in the United States.

Net Loss Per Share

Basic net loss per share is calculated by dividing the net loss by the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing the net loss by the weighted average number of common shares and common share equivalents outstanding for the period. Common stock equivalents are only included when their effect is dilutive. The Company’s potentially dilutive securities, which include warrants, outstanding stock options under the Company’s stock option plans, common stock subject to repurchase by the Company and potential shares to be purchased under the ESPP, have been excluded from the computation of diluted net loss per share in the periods in which they would be anti-dilutive. For all periods presented, there is no difference in the number of shares used to compute basic and diluted shares outstanding due to the Company’s net loss position.

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The following table sets forth the outstanding potentially dilutive securities that have been excluded in the calculation of diluted net loss per share:

Recent Accounting Pronouncements

In August 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-15, Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. This guidance requires management to perform interim and annual assessments on whether there are conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year of the date the financial statements are issued. If such conditions or events exist, certain disclosures are required. ASU No. 2014-15 is effective for the annual period ending after December 15, 2016, and for annual and interim periods thereafter. Early adoption is permitted. The Company is currently evaluating the impact of the pending adoption of ASU No. 2014-15 on its financial statements and related disclosures.

The accounting guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

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Below is a summary of assets and liabilities measured at fair value as of June 30, 2015 and December 31, 2014.

The Company’s marketable securities, consisting principally of debt securities, are classified as available-for-sale, are stated at fair value, and consist of Level 2 financial instruments in the fair value hierarchy. The Company determines the fair value of its debt security holdings based on pricing from a service provider. The service provider values the securities based on using market prices from a variety of industry-standard independent data providers. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs), such as yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for the underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures.

The Company invests its excess cash in money market funds and debt instruments of financial institutions, corporations, government sponsored entities and municipalities. The following tables summarize the Company’s marketable securities:

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Property and equipment consist of the following:

In July 2010, the Company entered into a $1.0 million promissory note payable to Pfizer Inc. (Pfizer). The note bears interest at 7% per annum, which is paid quarterly, and matures on July 29, 2020. The note payable prohibits the Company from paying cash dividends and is subject to acceleration upon specified events of default as defined in the agreement, including the failure to notify Pfizer of certain material adverse events. In July 2013, the note payable to Pfizer was amended to become convertible into shares of the Company’s common stock following the completion of the Company’s initial public offering (IPO), at the option of the holder, at a price per share equal to the fair market value of the common stock on the date of conversion.

Common Stock

In July 2013, the Company completed the IPO of 6,000,000 shares of common stock at an offering price of $11.00 per share. The Company received net proceeds of $58.6 million, after deducting underwriting discounts and commissions and offering-related transaction costs.

In August 2014, the Company entered into an At Market Issuance Sales Agreement (the Sales Agreement) with MLV & Co. LLC (MLV), pursuant to which the Company may sell from time to time, at its option, up to an aggregate of $50.0 million of shares of its common stock through MLV, as sales agent. Sales of the Company’s common stock made pursuant to the Sales Agreement, if any, will be made on The NASDAQ Global Market (Nasdaq) by means of ordinary brokers’ transactions at market prices. Additionally, under the terms of the Sales Agreement, the Company may also sell shares of its common stock through MLV, on Nasdaq or otherwise, at negotiated prices or at prices related to the prevailing market price. Under the terms of the Sales Agreement, MLV may not engage in any proprietary trading or trading as principal for MLV’s own account. MLV has agreed to use commercially reasonable efforts consistent with its normal trading and sales practices to sell the Company’s common stock from time to time, based upon the Company’s instructions (including any price, time or size limits or other customary parameters or conditions the Company may impose). The Company cannot provide any assurances that it will issue any shares pursuant to the Sales Agreement. The Company has agreed to pay a commission rate equal to up to 3% of the gross sales price per share sold. The Company has also agreed to provide MLV with customary indemnification and contribution rights. The Company has incurred legal and accounting costs of $0.3 million, as of June 30, 2015, in connection with the commencement of the Sales Agreement, which are recorded in other assets on the balance sheet until such time as the Company issues shares pursuant to the Sales Agreement. As of June 30, 2015, no shares were issued pursuant to the Sales Agreement.

In April 2015, the Company completed a public offering of 4,025,000 shares of its common stock at a public offering price of $5.75 per share. The shares were registered pursuant to a Registration Statement on Form S-3 filed on August 14, 2014. The Company received net proceeds of $21.4 million, after deducting underwriting discounts and commissions and offering-related transaction costs.

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Warrants

In 2013, the Company issued warrants exercisable for 1,124,026 shares of Series B preferred stock, at an exercise price of $0.90 per share, to certain existing investors in conjunction with a private placement (the 2013 Warrants) and warrants exercisable for 111,112 shares of Series B preferred stock, at an exercise price of $0.90 per share, to Oxford Finance LLC and Silicon Valley Bank in conjunction with a loan and security agreement (the Lender Warrants). Upon completion of the IPO, the 2013 Warrants and the Lender Warrants became exercisable for 136,236 and 13,468 shares of common stock, respectively, at an exercise price of $7.43 per share. The 2013 Warrants and the Lender Warrants will expire on May 30, 2018 and July 3, 2023, respectively.

Stock Options

The following table summarizes the Company’s stock option activity under all stock option plans for the six months ended June 30, 2015:

Stock-Based Compensation

The Company recorded stock-based compensation of $0.9 million and $0.5 million for the three months ended June 30, 2015 and 2014, respectively, and $1.7 million and $0.9 million for the six months ended June 30, 2015 and 2014, respectively.

Common Stock Reserved for Future Issuance

The following shares of common stock are reserved for future issuance at June 30, 2015:

In February 2014, the Company entered into a noncancelable operating lease agreement (the Lease) for certain office space starting in July 2014 through December 2019 with a renewal option for an additional five years. In May 2015, the Company entered into a first amendment to the Lease for additional office space starting in September 2015 through September 2020. The first amendment also extended the term of the Lease to September 2020. The monthly base rent, including the additional office space, will increase approximately 3% annually from $32,784 in 2015 to $39,268 in 2020. Future minimum payments under this noncancelable operating lease total $2.2 million at June 30, 2015.

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Rent expense was $80,000 and $45,000 for the three months ended June 30, 2015 and 2014, respectively, and $151,000 and $90,000 for the six months ended June 30, 2015 and 2014, respectively.

In July 2010, the Company entered into a stock purchase agreement with Pfizer, pursuant to which the Company acquired all of the outstanding stock of Idun Pharmaceuticals, Inc., which was subsequently spun off to the Company’s stockholders in January 2013. Under the stock purchase agreement, the Company may be required to make payments to Pfizer totaling $18.0 million upon the achievement of specified regulatory milestones.

The following discussion and analysis and the unaudited interim condensed financial statements included in this quarterly report on Form 10-Q should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2014 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in our annual report on Form 10-K filed with the Securities and Exchange Commission, or SEC, on March 13, 2015.

Forward-Looking Statements

This quarterly report on Form 10-Q contains forward-looking statements within the meaning of 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 quarterly report, including statements regarding our future results of operations and financial position, business strategy, prospective products, product approvals, research and development costs, timing and likelihood of success, plans and objectives of management for future operations and future results of anticipated products, are forward-looking statements. These 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.

In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplates,” “believes,” “estimates,” “predicts,” “potential” or “continue” or the negative of these terms or other similar expressions. The forward-looking statements in this quarterly report 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. These forward- looking statements speak only as of the date of this quarterly report and are subject to a number of risks, uncertainties and assumptions, including those described in Part II, Item 1A, “Risk Factors.” The events and circumstances reflected in our forward-looking statements may not be achieved or occur, and actual results could differ materially from those projected in the forward-looking statements. Moreover, we operate in an evolving environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to predict all risk factors and uncertainties. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise.

Overview

We are a biotechnology company focused on the development and commercialization of novel medicines to treat liver disease. We are developing our lead compound, emricasan, for the treatment of patients with chronic liver disease. Emricasan is a first-in-class, orally active pan-caspase protease inhibitor designed to reduce the activity of human caspases, which are enzymes that mediate inflammation and apoptosis. We believe that by reducing the activity of these enzymes, emricasan has the potential to interrupt the progression of liver disease and potentially provide treatment options in multiple areas of liver disease.

By conducting a comprehensive clinical program to demonstrate the therapeutic benefit of emricasan in patients with chronic liver disease across the spectrum of liver disease, we have identified cirrhotic liver patients as a key patient population for future trials with emricasan.

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We have observed compelling preclinical and clinical trial results that suggest emricasan may have clinical utility in slowing progression of liver disease regardless of the original cause of the disease. To date, emricasan has been studied in over 550 subjects in fourteen clinical trials. In multiple Phase 2b clinical trials, emricasan demonstrated statistically significant, consistent, rapid and sustained reduction in elevated levels of key biomarkers of inflammation and apoptosis implicated in the severity and progression of liver disease.

We have three ongoing clinical trials, in which we are evaluating three different aspects of emricasan’s mechanism of action over varying time periods in distinct patient populations. We are planning future trials for our expected initial registration pathway for emricasan with a focus in patients with liver cirrhosis due to non-alcoholic steatohepatitis, or NASH. We believe there is a clear unmet clinical need for cirrhosis patients, and that is a key reason why we have chosen to focus on cirrhosis for our initial registration pathway. Once a patient with cirrhosis develops clinically significant portal hypertension and is at high risk for hepatic decompensation, portal hypertension is a strong independent predictor of death and morbidity. While the liver has a tremendous ability to remodel its structure, resolve fibrosis and regenerate hepatocytes, significant improvement in liver function and reversal of cirrhosis can take months or even years. Significantly decreasing portal pressures would reduce near-term risk of decompensation, improving mortality and buying the patient time. Interrupting or even reversing the progression of fibrosis and cirrhosis would allow eventual renewal of liver tissue and restoration of liver function.

In September 2014, we initiated an exploratory, open-label Phase 2 clinical trial in patients with liver cirrhosis of mixed etiologies and portal hypertension confirmed by hepatic venous pressure gradient, or HVPG, procedure prior to enrollment. Patients received 25 mg of emricasan orally twice daily for 28 days. The co-primary endpoints are the changes from baseline in HVPG, which is a direct measurement of blood pressure in the portal vein, and cleaved Cytokeratin-18, or cCK18, a mechanism-specific biomarker that increases with liver disease severity and is associated with biologically active microparticles that are both proinflammatory and vasoactive. Secondary endpoints include changes from baseline in Model for End-Stage Liver Disease, or MELD, score and Child-Pugh-Turcotte, or CPT, score.

Patients in this trial had mild liver function impairment and most patients were classified as CPT-A at baseline. The trial included patients with lower risk of clinical liver decompensation, with baseline HVPG values of less than 12 mmHg, and patients with higher risk of clinical liver decompensation, with baseline HVPG values greater than or equal to 12 mmHg. While emricasan has important effects upon apoptosis and inflammation as well as steatohepatitis and fibrosis, we believe that emricasan might also have important and rapid hemodynamic effects that could result in a reduction in portal vein pressures. The trial was designed to determine whether emricasan could decrease elevated portal vein pressures in a short period of time, unlike the lengthy periods expected to be required to affect the structural damage in the liver resulting from fibrosis or cirrhosis. Enrollment in this trial was completed during the second quarter of 2015, and we expect top-line results to be available in the third quarter of 2015.

Also in September 2014, we initiated a Phase 2 clinical trial in patients with liver cirrhosis of mixed etiologies, mild to moderate liver impairment and a MELD score of 11 to 18 during the screening period. In the first stage, which is double-blind and placebo-controlled, patients were randomized 1:1 to receive either 25 mg of emricasan or placebo orally twice daily for three months. The primary endpoint is change from baseline in cCK18. Secondary endpoints include changes from baseline in MELD score and CPT score. These secondary endpoints reflect blood chemistry related to organ function such as bilirubin, creatinine and blood clotting times, as well as related clinical indicators such as ascites and encephalopathy that worsen with declining organ function. Most of the patients in this trial were classified as CPT-B. In the second stage, which is open-label, patients who complete the first stage of the trial, either on treatment or placebo, may receive emricasan for up to an additional three months. Enrollment in this trial was completed during the second quarter of 2015, and initial results from the first stage are expected to be available in the fourth quarter of 2015.

Our third ongoing clinical trial is in post-orthotopic liver transplant, or POLT, recipients. These patients have reestablished liver fibrosis or cirrhosis post-transplant as a result of recurrent hepatitis C virus, or HCV, infection and have successfully achieved a sustained viral response, or SVR, following HCV antiviral therapy, or POLT-HCV-SVR. Enrollment of approximately 60 total planned patients is on track for release of final top-line results in the first half of 2018. In addition, the U.S. Food and Drug Administration granted Orphan Drug Designation to emricasan in late 2013 for the treatment of liver transplant recipients with reestablished fibrosis to delay the progression to cirrhosis and end-stage liver disease.

We are currently planning future trials for our expected initial registration pathway for emricasan in patients with liver cirrhosis primarily due to NASH. In addition, we are evaluating the potential to include a clinical trial in patients with NASH-driven fibrosis as a component of our overall emricasan registration strategy. We believe a clinical trial in NASH fibrosis could provide additional safety data supportive of our expected NASH cirrhosis registration pathway. Specific design details for future trials are expected to be finalized based on results expected in the second half of 2015 from our two ongoing cirrhosis Phase 2 clinical trials, discussed above. We expect the results from our two ongoing trials in cirrhosis to provide important information on potential trial endpoints, patient etiologies and other important trial design considerations.

Since our inception, our primary activities have been organizational activities, including recruiting personnel, conducting research and development, including clinical trials, and raising capital. We have funded our operations since inception primarily through sales of equity securities and convertible promissory notes.

We have no products approved for sale. We have not generated any revenues to date, and we have incurred significant operating losses since our inception. We have never been profitable and have incurred consolidated net losses of $22.3 million and $15.6 million in the years ended December 31, 2014 and 2013, respectively, and $6.1 million and $12.0 million for the three and six months ended June 30, 2015, respectively. As of June 30, 2015, we had an accumulated deficit of $108.8 million.

We expect to continue to incur significant operating losses and negative cash flows from operating activities for the foreseeable future as we continue the clinical development of emricasan and seek regulatory approval for and, if approved, pursue commercialization of emricasan. As of June 30, 2015, we had cash, cash equivalents and

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marketable securities of $48.1 million. In August 2014, we entered into an At Market Issuance Sales Agreement, or the Sales Agreement, with MLV & Co. LLC, or MLV, pursuant to which we may sell from time to time, at our option, up to an aggregate of $50.0 million of shares of our common stock in “at-the-market” offerings. As of June 30, 2015, no shares were issued pursuant to the Sales Agreement.

In April 2015, we completed a public offering of 4,025,000 shares of our common stock at a public offering price of $5.75 per share. We received net proceeds of $21.4 million, after deducting underwriting discounts and commissions and offering-related transaction costs. We may obtain additional financing in the future through the issuance of our common stock in future public offerings, including under the Sales Agreement, through other equity or debt financings or through collaborations or partnerships with other companies. Although it is difficult to predict future liquidity requirements, we believe that our existing cash, cash equivalents and marketable securities will be sufficient to fund our operations for at least the next 12 months. We will need to raise additional capital to fund further operations, which are expected to include completion of additional clinical trials of emricasan, regulatory filings for emricasan in the United States and the European Union and the potential commercialization of emricasan.

However, successful transition to profitability is dependent upon achieving a level of revenues adequate to support our cost structure. We cannot assure you that we will ever be profitable or generate positive cash flow from operating activities and, unless and until we do, we will need to raise substantial additional capital through equity or debt financings or through collaborations or partnerships with other companies. We may not be able to raise additional capital on terms acceptable to us, or at all, and any failure to raise capital as and when needed could have a material adverse effect on our results of operations, financial condition and our ability to execute on our business plan.

JOBS Act

In April 2012, the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, was signed into law. The JOBS Act contains provisions that, among other things, reduce certain reporting requirements for an “emerging growth company.” As an “emerging growth company,” we are electing not to take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or revised accounting standards, and as a result, we will comply with new or revised accounting standards on the relevant dates on which adoption of such standards is required for non-emerging growth companies. Section 107 of the JOBS Act provides that our decision not to take advantage of the extended transition period is irrevocable. In addition, we are in the process of evaluating the benefits of relying on the other exemptions and reduced reporting requirements provided by the JOBS Act. Subject to certain conditions set forth in the JOBS Act, if as an “emerging growth company” we choose to rely on such exemptions, we may not be required to, among other things, (i) provide an auditor’s attestation report on our system of internal control over financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act of 2002, (ii) provide all of the compensation disclosure that may be required of non-emerging growth public companies under the Dodd-Frank Wall Street Reform and Consumer Protection Act, (iii) comply with any requirement that may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditor’s report providing additional information about the audit and the financial statements (auditor discussion and analysis) and (iv) disclose certain executive compensation-related items such as the correlation between executive compensation and performance and comparisons of the Chief Executive Officer’s compensation to median employee compensation. These exemptions will apply for a period of five years following the completion of our initial public offering, or IPO, or until we no longer meet the requirements of being an “emerging growth company,” whichever is earlier.

Financial Overview

Revenues

We currently have no products approved for sale, and we have not generated any revenues to date. We have not submitted any drug candidate for regulatory approval. In the future, we may generate revenues from a combination of milestone payments, reimbursements and royalties in connection with any future collaboration we may enter into with respect to emricasan, as well as product sales from emricasan. However, we do not expect to receive revenues unless and until we receive approval for emricasan or potentially enter into collaboration agreements for emricasan. If we fail to achieve clinical success in the development of emricasan in a timely manner and/or obtain regulatory approval for this drug candidate, our ability to generate future revenues would be materially adversely affected.

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Research and Development Expenses

The majority of our operating expenses to date have been incurred in research and development activities. Starting in late 2011, research and development expenses have been focused on the development of emricasan. Since acquiring emricasan in 2010, we have incurred $38.7 million in the development of emricasan through June 30, 2015. Our business model is currently focused on the development of emricasan in various liver diseases and is dependent upon our continuing to conduct research and a significant amount of clinical development. Our research and development expenses consist primarily of:

Research and development costs are expensed as incurred.

At this time, due to the inherently unpredictable nature of preclinical and clinical development, we are unable to estimate with any certainty the costs we will incur in the continued development of emricasan. Clinical development timelines, the probability of success and development costs can differ materially from expectations.

The costs of clinical trials may vary significantly over the life of a project owing to factors that include but are not limited to the following:

We are currently focused on advancing emricasan in multiple indications, and our future research and development expenses will depend on its clinical success. In addition, we cannot forecast with any degree of certainty whether emricasan will be the subject of future collaborations, when such arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and capital requirements.

Research and development expenditures will continue to be significant and will increase as we continue clinical development of emricasan over at least the next several years. We expect to incur significant development costs as we conduct our ongoing and future Phase 2 and Phase 3 clinical trials of emricasan.

We do not expect emricasan to be commercially available, if at all, for at least the next several years.

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General and Administrative Expenses

General and administrative expenses consist principally of salaries and related costs for personnel in executive, finance, business development and administrative functions. Other general and administrative expenses include costs related to being a public company, as well as insurance, facilities, travel, patent filing and maintenance, legal and consulting expenses.

If emricasan receives regulatory approval, we expect to incur increased expenses associated with building a sales and marketing team. Some expenses may be incurred prior to receiving regulatory approval of emricasan. We do not expect to receive any such regulatory approval for at least the next several years.

Interest Income

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

Interest Expense

Interest expense consists of coupon interest on our $1.0 million promissory note payable to Pfizer Inc.

Other Income (Expense)

Other income (expense) includes non-operating transactions such as those caused by currency fluctuations in the conversion of account balances held in foreign currencies to U.S. dollars.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of financial condition and results of operations is based on our condensed financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported revenues and expenses during the reporting periods. These items are monitored and analyzed by us for changes in facts and circumstances, and material changes in these estimates could occur in the future. We base our estimates on historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Changes in estimates are reflected in reported results for the period in which they become known. Actual results may differ materially from these estimates under different assumptions or conditions.

There were no significant changes during the six months ended June 30, 2015 to the critical accounting policies described in “Item 7 – Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Policies and Significant Judgments and Estimates” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014 filed with the SEC on March 13, 2015.

Results of Operations

Comparison of the Three Months Ended June 30, 2015 and 2014

Research and Development Expenses

Research and development expenses were $4.1 million in the three months ended June 30, 2015, as compared to $3.5 million for the same period in 2014. The increase of $0.6 million was primarily due to an increase in external emricasan clinical trial costs and higher personnel costs, including noncash stock-based compensation expense, partially offset by a decrease in external emricasan manufacturing costs.

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General and Administrative Expenses

General and administrative expenses were $2.0 million in the three months ended June 30, 2015, as compared to $1.8 million for the same period in 2014. The increase of $0.2 million was primarily due to higher personnel costs, including noncash stock-based compensation expense.

Changes in components of Other Income (Expense) were as follows:

Interest Income

Interest income was $18,000 for the three months ended June 30, 2015, as compared to $15,000 for the same period in 2014. Interest income consisted of interest earned on our cash, cash equivalents and marketable securities.

Interest Expense

Interest expense was $18,000 for each of the three-month periods ended June 30, 2015 and 2014 and consisted of interest related to the $1.0 million promissory note payable to Pfizer Inc.

Other Income (Expense)

Other income was $7,000 for the three months ended June 30, 2015, as compared to $4,000 for the same period in 2014. Other income (expense) represents currency fluctuations in the conversion of account balances held in foreign currencies to U.S. dollars.

Comparison of the Six Months Ended June 30, 2015 and 2014

Research and Development Expenses

Research and development expenses were $8.0 million in the six months ended June 30, 2015, as compared to $7.1 million for the same period in 2014. The increase of $0.9 million was primarily due to an increase in external emricasan clinical trial costs and higher personnel costs, including noncash stock-based compensation expense, partially offset by a decrease in external emricasan manufacturing costs.

General and Administrative Expenses

General and administrative expenses were $4.1 million in the six months ended June 30, 2015, as compared to $3.4 million for the same period in 2014. The increase of $0.7 million was primarily due to higher personnel costs, including noncash stock-based compensation expense.

Changes in components of Other Income (Expense) were as follows:

Interest Income

Interest income was $29,000 for the six months ended June 30, 2015, as compared to $36,000 for the same period in 2014. Interest income consisted of interest earned on our cash, cash equivalents and marketable securities.

Interest Expense

Interest expense was $35,000 for each of the six-month periods ended June 30, 2015 and 2014 and consisted of interest related to the $1.0 million promissory note payable to Pfizer Inc.

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Other Income (Expense)

Other expense was $2,000 for the six months ended June 30, 2015, as compared to other income of $3,000 for the same period in 2014. Other income (expense) represents currency fluctuations in the conversion of account balances held in foreign currencies to U.S. dollars.

Liquidity and Capital Resources

We have incurred losses since inception and negative cash flows from operating activities and, as of June 30, 2015, we had an accumulated deficit of $108.8 million. We anticipate that we will continue to incur net losses for the foreseeable future as we continue the development and potential commercialization of emricasan and incur additional costs associated with being a public company.

Prior to our IPO in July 2013, we funded our operations primarily through private placements of equity and convertible debt securities. In July 2013, we completed our IPO of 6,000,000 shares of common stock at an offering price of $11.00 per share. In April 2015, we completed a public offering of 4,025,000 shares of our common stock at a public offering price of $5.75 per share. We received net proceeds of $58.6 million and $21.4 million, respectively, from these offerings, after deducting underwriting discounts and commissions and offering-related transaction costs. At June 30, 2015, we had cash, cash equivalents and marketable securities of $48.1 million. We believe our existing cash, cash equivalents and marketable securities will be sufficient to fund our operations for at least the next 12 months. To fund further operations, we will need to raise additional capital. We plan to continue to fund losses from operations and capital funding needs through future equity and debt financing, as well as potential collaborations. The sale of additional equity or convertible debt could result in additional dilution to our stockholders. The incurrence of indebtedness would result in debt service obligations and could result in operating and financing covenants that would restrict our operations. No assurances can be provided that financing will be available in the amounts we need or on terms acceptable to us, if at all. If we are not able to secure adequate additional funding, we may be forced to make reductions in spending, extend payment terms with suppliers, liquidate assets where possible, and/or suspend or curtail planned programs. Any of these actions could materially harm our business, results of operations and future prospects.

In August 2014, we entered into the Sales Agreement with MLV, pursuant to which we may sell from time to time, at our option, up to an aggregate of $50.0 million of shares of our common stock through MLV, as sales agent. Sales of our common stock made pursuant to the Sales Agreement, if any, will be made on The NASDAQ Global Market, or Nasdaq, under our Registration Statement on Form S-3 filed on August 14, 2014 by means of ordinary brokers’ transactions at market prices. Additionally, under the terms of the Sales Agreement, we may also sell shares of our common stock through MLV, on Nasdaq or otherwise, at negotiated prices or at prices related to the prevailing market price. Under the terms of the Sales Agreement, MLV may not engage in any proprietary trading or trading as principal for MLV’s own account. MLV will use its commercially reasonable efforts consistent with its normal trading and sales practices to sell our common stock from time to time, based upon our instructions (including any price, time or size limits or other customary parameters or conditions we may impose). We cannot provide any assurances that we will issue any shares pursuant to the Sales Agreement. We will pay a commission rate equal to up to 3% of the gross sales price per share sold. We have also agreed to provide MLV with customary indemnification and contribution rights. The Sales Agreement may be terminated by us or MLV at any time upon ten days’ notice to the other party, or by MLV at any time in certain circumstances, including the occurrence of an event that would be reasonably likely to have a material adverse effect on our assets, business, operations, earnings, properties, condition (financial or otherwise), prospects, stockholders’ equity or results of operations. As of June 30, 2015, no shares were issued pursuant to the Sales Agreement.

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The following table sets forth a summary of the net cash flow activity for each of the periods set forth below:

Net cash used in operating activities was $10.3 million and $9.0 million for the six months ended June 30, 2015 and 2014, respectively. The primary use of cash was to fund our operations related to the development of emricasan.

Net cash used in investing activities was $12.2 million for the six months ended June 30, 2015, which consisted primarily of cash used to purchase marketable securities, partially offset by proceeds from maturities of marketable securities. Net cash provided by investing activities was $13.2 million for the six months ended June 30, 2014, which consisted primarily of proceeds from maturities of marketable securities, partially offset by cash used to purchase marketable securities.

Net cash provided by financing activities was $21.5 million for the six months ended June 30, 2015, which consisted primarily of net proceeds from our public offering in April 2015, partially offset by deferred public offering costs related to the Sales Agreement. Our public offering in April 2015 and the Sales Agreement were registered under our Registration Statement on Form S-3 filed on August 14, 2014. For the six months ended June 30, 2014, net cash provided by financing activities was $53,000 due to proceeds from the exercise of stock options.

Contractual Obligations and Commitments

In February 2014, we entered into a lease agreement with The Point Office Partners, LLC for 9,954 rentable square feet of office space located in San Diego, California, with a lease term from July 2014 through December 2019 and a renewal option for an additional five years. In May 2015, we entered into a first amendment to the lease agreement for additional office space of 3,271 rentable square feet starting September 2015 through September 2020. The first amendment to the lease agreement also extended the term of the lease to September 2020. The monthly base rent, including the additional office space, will increase approximately 3% annually from $32,784 in 2015 to $39,268 in 2020.

As of June 30, 2015, there have been no other material changes outside the ordinary course of our business to the contractual obligations we reported in “Item 7 – Management’s Discussion and Analysis of Financial Condition and Results of Operations – Contractual Obligations and Commitments” in our annual report on Form 10-K for the year ended December 31, 2014 filed with the SEC on March 13, 2015.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements (as defined by applicable regulations of the SEC) that are reasonably likely to have a current or future material effect on our financial condition, results of operations, liquidity, capital expenditures or capital resources.

As of June 30, 2015, there have been no material changes in our market risk from that described in “Item 7A. Quantitative and Qualitative Disclosures About Market Risk” in our annual report on Form 10-K for the year ended December 31, 2014 filed with the Securities and Exchange Commission on March 13, 2015.

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Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, as of the end of the period covered by this quarterly report on Form 10-Q. Based on such evaluation, our principal executive officer and principal financial officer have concluded that, as of such date, our disclosure controls and procedures were effective.

Inherent Limitations of Disclosure Controls and Procedures and Internal Control Over Financial Reporting

Our management, including our principal executive officer and our principal financial officer, does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all error and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within our company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of a 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 management override of the control. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions, or the degree of compliance with the policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

Changes in Internal Control Over Financial Reporting

There has been no change in our internal control over financial reporting during the quarter ended June 30, 2015, that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

We are currently not a party to any material legal proceedings.

There have been no material changes to the risk factors included in “Item 1A. Risk Factors” in our annual report on Form 10-K for the year ended December 31, 2014 filed with the Securities and Exchange Commission on March 13, 2015.

Unregistered Sales of Equity Securities

None.

Use of Proceeds

On July 24, 2013, our Registration Statement on Form S-1 (File No. 333-189305), which registered an aggregate amount of up to $69.0 million of our common stock, was declared effective by the Securities and Exchange Commission for our initial public offering, or IPO. On July 25, 2013, we filed a Registration Statement pursuant to Rule 462(b) (File No. 333-190115), which registered an additional aggregate amount of up to $6.9 million of our common stock. At the closing of our IPO on July 30, 2013, we sold 6,000,000 shares of common stock at an IPO price of $11.00 per share and received gross proceeds of $66.0 million, which resulted in net proceeds to us of $58.6 million, after underwriting discounts and commissions of $4.6 million and offering-related transaction costs of $2.8 million. None of the expenses associated with our IPO were paid to directors, officers, persons owning ten percent or more of any class of equity securities, or to their associates, or to our affiliates. Stifel, Nicolaus & Company, Incorporated and Piper Jaffray & Co. acted as joint book-running managers, and JMP Securities LLC and SunTrust Robinson Humphrey, Inc. acted as co-managers for our IPO. On August 23, 2013, the underwriters’ 30-day over-allotment option to purchase an additional 900,000 shares of common stock in our IPO expired without being exercised and the IPO terminated.

We intend to use the net offering proceeds to fund the clinical development of emricasan and for working capital and general corporate purposes. Pending use of the net proceeds, we plan to invest the net proceeds from our IPO in short- and intermediate-term, interest-bearing obligations, investment-grade instruments, certificates of deposit or direct or guaranteed obligations of the U.S. government. Through June 30, 2015, the net proceeds have been applied as follows: $17.3 million towards the clinical development of emricasan and $24.8 million towards working capital and general corporate purposes.

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Issuer Purchases of Equity Securities

The following table contains information relating to the repurchases of our common stock made by us in the quarter ended June 30, 2015.

None.

Not applicable.

None.

A list of exhibits is set forth on the Exhibit Index immediately following the signature page of this quarterly report on Form 10-Q and is incorporated herein by reference.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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EXHIBIT INDEX

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