Clovis Oncology, Inc. - Quarter Report: 2013 June (Form 10-Q)

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

For the quarterly period ended June 30, 2013.

For the transition period from                      to                      .

Commission file number: 001-35347

Clovis Oncology, Inc.

(Exact name of Registrant as specified in its charter)

(303) 625-5000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

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 Web site, 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

The number of outstanding shares of the registrant’s common stock, par value $0.001 per share, as of August 1, 2013 was 30,171,392.

Table of Contents

CLOVIS ONCOLOGY, INC.

FORM 10-Q

TABLE OF CONTENTS

2

Table of Contents

PART I. FINANCIAL INFORMATION

CLOVIS ONCOLOGY, INC.

(A Development Stage Enterprise)

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(Unaudited)

(In thousands, except per share amounts)

See accompanying notes.

3

Table of Contents

CLOVIS ONCOLOGY, INC.

(A Development Stage Enterprise)

CONSOLIDATED BALANCE SHEETS

(Unaudited)

(In thousands, except for share amounts)

See accompanying notes.

4

Table of Contents

CLOVIS ONCOLOGY, INC.

(A Development Stage Enterprise)

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(Dollars in thousands)

See accompanying notes.

5

Table of Contents

CLOVIS ONCOLOGY, INC.

(A Development Stage Enterprise)

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. Nature of Business and Basis of Presentation

Clovis Oncology, Inc. (the “Company”), a corporation in the development stage, was incorporated in Delaware on April 20, 2009, and commenced operations in May 2009. The Company is a biopharmaceutical company focused on acquiring, developing and commercializing innovative anti-cancer agents in the United States, Europe and other international markets. The Company has and intends to continue to license or acquire rights to oncology compounds in all stages of development. In exchange for the right to develop and commercialize these compounds, the Company generally expects to provide the licensor with a combination of up-front payments, milestone payments and royalties on future sales. In addition, the Company generally expects to assume the responsibility for future drug development and commercialization costs. The Company currently operates in one segment. Since inception, the Company’s operations have consisted primarily of developing in-licensed compounds and their companion diagnostics, evaluating new product acquisition candidates, raising capital and corporate organization activities. The Company has never earned revenue from these activities, and accordingly, the Company is considered to be in the development stage as of June 30, 2013.

Basis of Presentation

The information reported within the Company’s financial statements from April 20, 2009 to December 31, 2010 was based solely on the accounts of Clovis Oncology, Inc. Effective January 1, 2011, Clovis Oncology UK Limited, a wholly owned subsidiary of the Company, commenced operations. All financial information presented after December 31, 2010 was consolidated and includes the accounts of the Company and its wholly owned subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation. The unaudited financial statements of Clovis Oncology, Inc. included herein reflect all adjustments, consisting only of normal recurring adjustments, which in the opinion of management are necessary to fairly state our financial position, results of operations and cash flows for the periods presented. Changes in or reclassifications out of accumulated other comprehensive loss are not disclosed in our notes to the unaudited financial statements due to the insignificance of the activity. Interim results may not be indicative of the results that may be expected for the full year. Certain information and footnote disclosures normally included in audited financial information prepared in accordance with accounting principles generally accepted in the United States of America, or U.S. GAAP, have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, or SEC. The Company evaluates subsequent events up to the time of filing with the SEC. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto which are included in our Annual Report on Form 10-K for the year ended December 31, 2012 for a broader discussion of our business and the opportunities and risks inherent in such business.

Use of Estimates

The preparation of these unaudited consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, expenses, other comprehensive loss and related disclosures. On an ongoing basis, management evaluates its estimates, including estimates related to clinical trial accruals and share-based compensation expense. The Company bases its estimates on historical experience and other market-specific or other relevant assumptions that it believes to be reasonable under the circumstances. Actual results may differ from those estimates or assumptions.

Liquidity

The Company has incurred significant net losses since inception and has relied on its ability to fund its operations through public and private equity financings, and management expects operating losses and negative cash flows to continue for at least the next several years. As the Company continues to incur losses, transition to profitability is dependent upon the successful development, approval, and commercialization of its product candidates and achieving a level of revenues adequate to support the Company’s cost structure. The Company may never achieve profitability, and unless or until it does, the Company will continue to need to raise additional cash. Management intends to fund future operations through cash and investments on hand and additional private or public debt or equity offerings, and may seek additional capital through arrangements with strategic partners or from other sources.

2. Summary of Significant Accounting Policies

The Company’s significant accounting policies are described in Note 2 of the Notes to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.

3. Financial Instruments and Fair Value Measurement

Cash, Cash Equivalents and Available for Sale Securities

The Company considers all highly liquid investments with original maturities at the date of purchase of three months or less to be cash equivalents. Cash and cash equivalents include bank demand deposits and money market funds that invest primarily in certificate of deposits, commercial paper and U.S. government and U.S. government agency obligations. Cash equivalents are reported at fair value.

6

Table of Contents

Marketable securities with original maturities greater than three months are considered to be available for sale securities and historically consisted of U.S. agency obligations, U.S. government obligations and corporate debt obligations. Available for sale securities are reported at fair market value and unrealized gains and losses are included as a separate component of stockholders’ equity. Realized gains, realized losses, the amortization of premiums and discounts, interest earned and dividends earned are included in other income (expense). The cost of investments for purposes of computing realized and unrealized gains and losses is based on the specific identification method. Investments with maturities beyond one year are classified as short-term based on management’s intent to fund current operations with these securities or to make them available for current operations. A decline in the market value of a security below its cost value that is deemed to be other than temporary is charged to earnings, and results in the establishment of a new cost basis for the security.

Fair Value of Financial Instruments

Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability (at exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The three levels of inputs that may be used to measure fair value include:

The following table identifies the Company’s assets that were measured at fair value on a recurring basis (in thousands):

There were no security transfers between Levels 1 and 2 during the six month period ended June 30, 2013.

4. Other Accrued Expenses

Other accrued expenses are comprised of the following (in thousands):

5. Convertible Promissory Notes

In May 2011, the Company issued $20.0 million of 5% Convertible Promissory Notes to existing investors for cash. In June 2011, the Company issued $15.0 million of 5% Convertible Promissory Notes to Pfizer, which was comprised of a $7.0 million note issued to acquire the global rights to develop and market rucaparib and an $8.0 million note issued for cash (the “Notes”). The Notes accrued interest at an annual rate of 5% and had a maturity date of May 25, 2012. In connection with the completion of the Company’s initial public offering in November 2011, the principal balance and all accrued and unpaid interest due on the Notes was converted into 2,757,788 shares of the Company’s common stock.

7

Table of Contents

6. Convertible Preferred Stock and Stockholders’ Equity

Common Stock

In May 2009, the Company issued 1,206,899 shares of its common stock to the original founders at a purchase price of $.0029 per share. The shares were issued under restricted stock purchase agreements, which allowed the Company, at its discretion, to repurchase unvested shares if the founders terminated their employment with the Company. As of June 30, 2013, all common stock shares issued to the founders under the restricted stock purchase agreements were fully vested.

In November 2011, the Company sold 10,700,000 shares of its common stock in an initial public offering at a price of $13.00 per share. The Company received net proceeds from the offering of $129.4 million, after deduction of $6.9 million of underwriting commissions and $2.8 million of offering expenses.

In April 2012, the Company sold 3,750,000 shares of its common stock in a public offering at $20.00 per share. The net offering proceeds realized after deducting offering expenses and underwriters’ discounts and commissions was $70.0 million.

In June 2013, the Company sold 3,819,444 shares of its common stock in a public offering at $72.00 per share. The net offering proceeds realized after deducting offering expenses and underwriters’ discounts and commissions was $259.1 million.

The holders of common stock are entitled to one vote per share on all matters to be voted upon by the stockholders of the Company. Subject to the preferences that may be applicable to any outstanding shares of preferred stock, the holders of common stock are entitled to receive ratably such dividends, if any, as may be declared by the Company’s Board of Directors.

Preferred Stock

In May 2009, the Company entered into the Series A-1, A-2, B and C Preferred Stock Purchase Agreement with various investors (the “Preferred Stock Purchase Agreement”). The Preferred Stock Purchase Agreement provided for the issuance of up to $146.3 million of the Company’s convertible preferred stock, subject to various terms and conditions. During 2009, the Company issued shares of Series A-1, Series A-2 and Series B convertible preferred stock resulting in total aggregate cash proceeds to the Company of $75.5 million, net of $174,000 related stock issuance costs.

In connection with the completion of the Company’s initial public offering in November 2011, all of the outstanding shares of convertible preferred stock were automatically converted into 7,244,523 shares of the Company’s common stock. The Series A-1, A-2 and B convertible preferred stock converted at a rate of 2.9 for 1 into common stock based upon the election of the convertible preferred stock holders immediately prior to the closing of the initial public offering.

7. Share-Based Compensation

Share-based compensation expense for all equity based programs, including stock options and the employee stock purchase plan, for the three and six months ended June 30, 2013 and 2012, respectively, was recognized in the accompanying Consolidated Statements of Operations and Comprehensive Loss as follows:

The Company did not recognize a tax benefit related to share-based compensation expense during the three and six months ended June 30, 2013 and 2012, respectively, as the Company maintains net operating loss carryforwards and has established a valuation allowance against the entire net deferred tax asset as of June 30, 2013. No share-based compensation expense was capitalized on our Consolidated Balance Sheets as of June 30, 2013 and December 31, 2012.

The following table summarizes the activity relating to the Company’s options to purchase common stock for the six month period ended June 30, 2013:

8

Table of Contents

The aggregate intrinsic value in the table above represents the pretax intrinsic value, based on our closing stock price of $66.98 as of June 30, 2013, which would have been received by the option holders had all option holders with in-the-money options exercised their options as of that date.

As of June 30, 2013, the unrecognized share-based compensation expense related to nonvested options, adjusted for expected forfeitures was $23.7 million and the estimated weighted-average remaining vesting period was 2.8 years.

8. License Agreements

CO-1686

In May 2010, the Company entered into a worldwide license agreement with Avila Therapeutics, Inc. (“Avila”) to discover, develop and commercialize a covalent inhibitor of mutant forms of the epidermal growth factor receptor gene product. In March 2012, Avila was acquired by Celgene Corporation (“Celgene”). CO-1686 was identified as the lead drug candidate to be developed under the license agreement. The Company is responsible for all preclinical, clinical, regulatory and other activities necessary to develop and commercialize CO-1686. The Company made an up-front payment of $2.0 million upon execution of the license agreement which was recognized as acquired in-process research and development expense. The Company is obligated to pay royalties on net sales of CO-1686, based on the volume of annual net sales achieved. Celgene has the option to increase royalty rates by electing to reimburse a portion of the development expenses incurred by the Company. This option must be exercised within a limited period of time after Celgene is notified of our intent to pursue regulatory approval of CO-1686 in the United States or European Union as a first line therapy.

In January 2012, the U.S. Food and Drug Administration (FDA) accepted our investigational new drug (IND) application to begin clinical investigation of CO-1686. Following the FDA’s acceptance of the IND application, the Company made a milestone payment of $4.0 million to Avila as required by the license agreement and recognized the payment as acquired in-process research and development expense. The Company may be required to pay up to an additional aggregate of $115.0 million in development and regulatory milestone payments if certain clinical study objectives and regulatory filings, acceptances and approvals are achieved. In addition, the Company may be required to pay up to an aggregate of $120.0 million in sales milestones if certain annual sales targets are achieved.

In January 2013, the Company entered into an exclusive license agreement with Gatekeeper Pharmaceuticals, Inc. (“Gatekeeper”) to acquire exclusive rights under patent applications associated with mutant epidermal growth factor receptor (“EGFR”) inhibitors and methods of treatment. Pursuant to the terms of the license agreement, the Company made an up-front payment of $250,000 upon execution of the agreement, which was recognized as acquired in-process research and development expense. If CO-1686 is approved for commercial sale, the Company will pay royalties to Gatekeeper on future net sales.

Rucaparib

In June 2011, the Company entered into a worldwide license agreement with Pfizer Inc. to acquire exclusive development and commercialization rights to Pfizer’s drug candidate known as rucaparib. This drug candidate is a small molecule inhibitor of poly (ADP-ribose) polymerase, or PARP, which the Company is developing for the treatment of selected solid tumors. Pursuant to the terms of the license agreement, the Company made an up-front payment by issuing to Pfizer a $7.0 million convertible promissory note with a 5% annual interest rate, due in 2012. Upon completion of the Company’s initial public offering in November 2011, the principal balance and all accrued and unpaid interest due on this note of $7.2 million was converted into 551,222 shares of common stock. The Company is responsible for all development and commercialization costs of rucaparib and, if approved, Pfizer will receive royalties on the net sales of the product. In addition, Pfizer is eligible to receive up to $259 million of further payments, in aggregate, if certain development, regulatory and sales milestones are achieved.

In April 2012, the Company entered into a license agreement with AstraZeneca UK Limited to acquire exclusive rights associated with rucaparib under a family of patents and patent applications that claim methods of treating patients with PARP inhibitors in certain indications. The license enables the development and commercialization of rucaparib for the uses claimed by these patents. Pursuant to the terms of the license agreement, the Company made an up-front payment of $250,000 upon execution of the agreement, which was recognized as acquired in-process research and development expense. The Company may be required to pay up to an aggregate of $0.7 million in milestone payments if certain regulatory filings, acceptances and approvals are achieved. If approved, AstraZeneca will also receive royalties on any net sales of rucaparib.

9

Table of Contents

CO-101

In November 2009, the Company entered into a license agreement with Clavis Pharma ASA (“Clavis”) to develop and commercialize CO-101 in North America, Central America, South America and Europe. Under terms of the license agreement, the Company made an up-front payment to Clavis in the amount of $15.0 million, which was comprised of $13.1 million for development costs incurred prior to the execution of the agreement that was recognized as acquired in-process research and development and $1.9 million for the prepayment of preclinical activities to be performed by Clavis. In November 2010, the license agreement was amended to expand the license territory to include Asia and other international markets. The Company made a payment of $10.0 million to Clavis for the territory expansion and recognized the payment as acquired in-process research and development. As part of the amended license agreement, Clavis also agreed to reimburse up to $3.0 million of the Company’s research and development costs for certain CO-101 development activities subject to the Company incurring such costs, all of which was completed in 2011.

On November 12, 2012, the Company reported results from a pivotal study for CO-101 as compared to gemcitabine in metastatic pancreatic cancer. The study results failed to demonstrate a difference in overall survival between the two study arms. Based on the results of the study, the Company has ceased development of CO-101 and terminated the license agreement.

Drug Discovery Collaboration Agreement

In July 2012, the Company entered into a drug discovery collaboration agreement with Array BioPharma Inc. for the discovery of a novel cKIT inhibitor targeting resistance mutations for the treatment of GIST, a gastrointestinal cancer. Under the terms of the agreement, the Company is responsible to fund all costs of the discovery program, as well as costs to develop and commercialize any clinical candidates discovered. If any clinical candidates are discovered and the Company seeks to pursue clinical development of such clinical candidates, the Company may be required to pay Array up to an aggregate of $192.0 million in milestone payments if certain development and regulatory objectives and annual net sales targets are achieved.

9. Net Loss Per Share

Basic net loss per share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is computed by dividing net loss by the weighted-average number of common share equivalents outstanding for the period determined using the treasury-stock method. For purposes of this calculation, stock options are considered to be common stock equivalents and are only included in the calculation of diluted net loss per share when their effect is dilutive.

The shares outstanding at the end of the respective periods presented in the table below were excluded from the calculation of diluted net loss per share due to their anti-dilutive effect (in thousands):

10. Commitments and Contingencies

Royalty and License Fee Commitments

The Company has entered into certain license agreements, as identified in Note 8, with third parties that include the payment of development and regulatory milestones, as well as royalty payments, upon the achievement of pre-established development, regulatory and commercial targets. The Company’s payment obligation related to these license agreements is contingent upon the successful development, regulatory approval and commercialization of the licensed products. Due to the nature of these arrangements, the future potential payments are inherently uncertain, and accordingly no amounts have been recorded in the Company’s accompanying Consolidated Balance Sheets at June 30, 2013 and December 31, 2012.

Development and Manufacturing Agreement Commitments

In February 2013, the Company entered into a development and manufacturing agreement with a third-party supplier for the production of the active ingredient for rucaparib. Under the Development and Manufacturing Agreement, the Company will provide the third-party supplier a rolling 24-month forecast that will be updated by the Company on a quarterly basis. The Company is obligated to order the quantity specified in the first twelve months of any forecast. As of June 30, 2013, $2.6 million of purchase commitments were established under this agreement.

11. Subsequent Events

The Company evaluated events up to the filing date of these interim financial statements and determined that no subsequent activity required disclosure.

10

Table of Contents

Forward-Looking Information

This Quarterly Report on Form 10-Q and the information incorporated herein by reference includes statements that are, or may be deemed, “forward-looking statements.” In some cases, these forward-looking statements can be identified by the use of forward-looking terminology, including the terms “believes,” “estimates,” “anticipates,” “expects,” “plans,” “intends,” “may,” “could,” “might,” “will,” “should,” “approximately” or, in each case, their negative or other variations thereon or comparable terminology, although not all forward-looking statements contain these words. They appear in a number of places throughout this Quarterly Report on Form 10-Q and include statements regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things, our ongoing and planned preclinical studies and clinical trials, the timing of and our ability to make regulatory filings and obtain and maintain regulatory approvals for our product candidates, the degree of clinical utility of our products, particularly in specific patient populations, expectations regarding clinical trial data, our results of operations, financial condition, liquidity, prospects, growth and strategies, the industry in which we operate and the trends that may affect the industry or us.

By their nature, forward-looking statements involve risks and uncertainties because they relate to events, competitive dynamics, and industry change and depend on the economic circumstances that may or may not occur in the future or may occur on longer or shorter timelines than anticipated. We caution you that forward-looking statements are not guarantees of future performance and that our actual results of operations, financial condition and liquidity, and the development of the industry in which we operate may differ materially from the forward-looking statements contained herein.

Any forward-looking statements that we make in this Quarterly Report on Form 10-Q speak only as of the date of such statement, and we undertake no obligation to update such statements to reflect events or circumstances after the date of this Quarterly Report on Form 10-Q or to reflect the occurrence of unanticipated events.

You should also read carefully the factors described in the “Risk Factors” section of this Quarterly Report on Form 10-Q to better understand the risks and uncertainties inherent in our business and underlying any forward-looking statements. You are advised, however, to consult any further disclosures we make on related subjects in our other reports filed with the SEC and on our website.

Overview

We are a biopharmaceutical company focused on acquiring, developing and commercializing innovative anti-cancer agents in the United States, Europe and additional international markets. We target our development programs for the treatment of specific subsets of cancer populations, and seek to simultaneously develop, with partners, companion diagnostics that direct our product candidates to the patients that are most likely to benefit from their use. We are currently developing two product candidates for which we hold global marketing rights: CO-1686, an orally available, small molecule epidermal growth factor receptor, or EGFR, covalent inhibitor that is in Phase I/II clinical development for the treatment of non-small cell lung cancer, or NSCLC, in patients with activating EGFR mutations, including the initial activating mutations, as well as the primary resistance mutation, T790M; and rucaparib, an orally available, small molecule poly (ADP-ribose) polymerase, or PARP, inhibitor being developed for various solid tumors that is currently in Phase I/II clinical trials. We have also entered into a drug discovery agreement for the discovery of a novel cKIT inhibitor targeting resistance mutations for the treatment of GIST, a gastrointestinal cancer. If any clinical candidates are discovered, we would seek to pursue clinical development of such clinical candidates.

We were incorporated in Delaware in April 2009 and commenced operations in May 2009. To date, we have devoted substantially all of our resources to identifying and in-licensing product candidates, performing development activities with respect to those product candidates, and the general and administrative support of these operations. We have generated no revenues and, through June 30, 2013, have principally funded our operations using the $75.5 million of net proceeds from the sale of convertible preferred stock, the issuance of $35.0 million aggregate principal amount of convertible promissory notes, and $458.5 million of net proceeds from public offerings of our common stock completed in November 2011, April 2012 and June 2013. The convertible preferred stock and outstanding principal amount of the convertible promissory notes and all accrued and unpaid interest converted into shares of our common stock immediately prior to the closing of our initial public offering in November 2011.

We have never been profitable and, as of June 30, 2013, we had an accumulated deficit of $219.5 million. We expect to incur significant and increasing losses for the foreseeable future as we advance our product candidates through clinical development to seek regulatory approval and, if approved, commercialize such product candidates. We will need additional financing to support our operating activities. We will seek to fund our operations through public or private equity or debt financings or other sources. Adequate additional financing may not be available to us on acceptable terms, or at all. Our failure to raise capital as and when needed would have a negative impact on our financial condition and our ability to pursue our business strategy. We expect that research and development expenses will increase as we continue the development of our product candidates. We will need to generate significant revenues to achieve profitability and we may never do so.

11

Table of Contents

Product License Agreements

CO-1686

In May 2010, we entered into a worldwide license agreement with Avila (now part of Celgene Corporation) to discover, develop and commercialize a covalent inhibitor of mutant forms of the EGFR gene product. CO-1686 was identified as the lead inhibitor candidate under the license agreement. We are responsible for all preclinical, clinical, regulatory and other activities necessary to develop and commercialize CO-1686. We made an up-front payment of $2.0 million to Avila upon execution of the license agreement and an additional $4.0 million milestone payment in the first quarter of 2012 upon the acceptance by the U.S. Food and Drug Administration, or FDA, of our investigational new drug, or IND, application for CO-1686. We recognized both payments as acquired in-process research and development expense. We are obligated to pay royalties on net sales of CO-1686, based on the volume of annual net sales achieved. Celgene has the option to increase royalty rates by electing to reimburse a portion of our development expenses. This option must be exercised within a limited period of time after Celgene is notified by us of our intent to pursue regulatory approval of CO-1686 in the United States or the European Union as a first-line treatment. We may be required to pay up to an additional aggregate of $115.0 million in additional development and regulatory milestone payments if certain clinical study objectives and regulatory filings, acceptances and approvals are achieved. In addition, we may be required to pay up to an aggregate of $120.0 million in sales milestone payments if certain annual sales targets are achieved.

In January 2013, the Company entered into an exclusive license agreement with Gatekeeper Pharmaceuticals, Inc. (“Gatekeeper”) to acquire exclusive rights under patent applications associated with mutant EGFR inhibitors and methods of treatment. Pursuant to the terms of the license agreement, the Company made an up-front payment of $250,000 upon execution of the agreement, which was recognized as acquired in-process research and development expense. If CO-1686 is approved for commercial sale, the Company will pay royalties to Gatekeeper on future net sales.

Rucaparib

In June 2011, we entered into a license agreement with Pfizer to acquire exclusive global development and commercialization rights to Pfizer’s drug candidate known as rucaparib. This drug candidate is a small molecule PARP inhibitor which we are developing for the treatment of selected solid tumors. Pursuant to the terms of the license agreement, we made an up-front payment by issuing Pfizer $7.0 million principal amount of a 5% convertible promissory note due in 2012, which was subsequently converted to common stock immediately prior to our initial public offering. We are responsible for all development and commercialization costs of rucaparib and, if approved, we will be required to pay Pfizer royalties on sales of the product. In addition, we may be required to pay Pfizer up to an aggregate of $259.0 million in milestone payments if certain development, regulatory and sales milestones are achieved.

In April 2012, the Company entered into a license agreement with AstraZeneca UK Limited to acquire exclusive rights associated with rucaparib under a family of patents and patent applications that claim methods of treating patients with PARP inhibitors in certain indications. The license enables the development and commercialization of rucaparib for the uses claimed by these patents. Pursuant to the terms of the license agreement, the Company made an up-front payment of $250,000 upon execution of the agreement, which was recognized as acquired in-process research and development expense. The Company may be required to pay up to an aggregate of $0.7 million in milestone payments if certain regulatory filings, acceptances and approvals are achieved. If approved, AstraZeneca will also receive royalties on any sales of rucaparib.

Drug Discovery Collaboration Agreement

In July 2012, the Company entered into a drug discovery collaboration agreement with Array BioPharma Inc. for the discovery of a novel cKIT inhibitor targeting resistance mutations for the treatment of GIST, a gastrointestinal cancer. Under the terms of the agreement, the Company is responsible to fund all costs of the discovery program, as well as costs to develop and commercialize any clinical candidates discovered. If any clinical candidates are discovered and the Company seeks to pursue clinical development of such clinical candidates, the Company may be required to pay Array up to an aggregate of $192.0 million in milestone payments if certain development and regulatory objectives and annual net sales targets are achieved.

CO-101

In November 2009, we entered into a license agreement with Clavis to develop and commercialize CO-101 in North America, Central America, South America and Europe. Under the terms of the license agreement, we made an up-front payment to Clavis in the amount of $15.0 million, which was comprised of $13.1 million for development costs incurred prior to the execution of the agreement, which we recognized as acquired in-process research and development and $1.9 million for the prepayment of preclinical activities to be performed by Clavis. In November 2010, the license agreement was amended to expand the license territory to include Asia and other international markets. We paid Clavis $10.0 million for the territory expansion and recognized that payment as acquired in-process research and development expense. As part of the amendment to the license agreement, Clavis agreed to reimburse up to $3.0 million of our research and development costs for certain CO-101 development activities subject to our incurring such costs.

12

Table of Contents

On November 12, 2012, the Company reported results from a pivotal study of CO-101 versus gemcitabine in metastatic pancreatic cancer, which failed to demonstrate a difference in overall survival between the two study arms. Based on the results of the study, the Company has ceased development of CO-101 and terminated the license agreement.

Financial Operations Overview

Revenue

To date, we have not generated any revenues. In the future, we may generate revenue from the sales of product candidates that are currently under development. Based on our current development plans, we do not expect to generate significant revenues for the foreseeable future. If we fail to complete the development of our product candidates and, together with our partners, companion diagnostics or obtain regulatory approval for them, our ability to generate future revenue, and our results of operations and financial position, will be adversely affected.

Research and Development Expenses

Research and development expenses consist of costs incurred for the development of our product candidates and companion diagnostics, which include:

Research and development costs are expensed as incurred. License fees and milestone payments related to in-licensed products and technology are expensed if it is determined that they have no alternative future use. Costs for certain development activities, such as clinical trials, are recognized based on an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations or information provided to us by our vendors.

Research and development activities are central to our business model. Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later stage clinical trials. We plan to increase our research and development expenses for the foreseeable future as we seek to expand our clinical and companion diagnostic development activities for our CO-1686 and rucaparib product candidates and perform drug discovery activities for a cKIT inhibitor targeting resistance mutations for the treatment of GIST.

The following table identifies research and development costs and acquired in-process research and development costs on a program-specific basis for our product candidates in-licensed through June 30, 2013, their companion diagnostics, and the cKIT inhibitor drug discovery program. Personnel-related costs, depreciation and share-based compensation are not allocated to specific programs as they are deployed across multiple projects under development and, as such, are separately classified as personnel and other expenses in the table below.

13

Table of Contents

General and Administrative Expenses

General and administrative expenses consist principally of salaries and related costs for personnel in executive, finance, business development, legal, investor relations and information technology functions. Other general and administrative expenses include facility costs, communication expenses, corporate insurance, and professional fees for legal, consulting and accounting services.

Other Income and Expense

Other income is comprised of interest income earned on cash, cash equivalents and available for sale securities, gain on the sale of available for sale securities, and a federal grant awarded to us under the Qualifying Therapeutic Discovery Project Program in 2010. Other expense includes interest expense associated with the convertible notes payable outstanding during 2011. In addition, we hold cash balances at financial institutions denominated in currencies other than the U.S. dollar to fund research and development activities performed by various third-party vendors. The translation of these currencies into U.S. dollars results in foreign currency gains or losses, depending on the change in value of these currencies against the U.S. dollar. These gains and losses are included in Other Income and Expense.

Critical Accounting Policies and Significant Judgments and Estimates

Our discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities and expenses and the disclosure of contingent assets and liabilities in our financial statements. On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued expenses and share-based compensation. We base our estimates on historical experience, known trends and events and various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

For a description of our critical accounting policies, please see Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2012. There have not been any material changes to our critical accounting policies since December 31, 2012.

Results of Operations

Comparison of Three Months Ended June 30, 2013 and 2012:

The following table summarizes the results of our operations for the three months ended June 30, 2013 and 2012:

14

Table of Contents

Research and Development Expenses. The increase in research and development expenses for the three months ended June 30, 2013 compared to the three months ended June 30, 2012 was due to development expenses associated with our CO-1686 and rucaparib product candidates, less a reduction of $5.1 million in CO-101 development expenses associated with the wind down of this program. Research and development expenses for CO-1686 increased by $2.4 million due primarily to increased enrollment in the ongoing Phase I study for CO-1686, as well as expenses incurred for drug formulation development. Research and development expenses for rucaparib increased by $3.0 million due primarily to the initiation of two new clinical studies during the second quarter of 2013. In the third quarter of 2012, we also initiated a drug discovery program for cKIT inhibitors, resulting in an increase of $1.1 million over the second quarter of 2012. The remaining increase is attributable to personnel costs, including a $0.5 million increase in share-based compensation expense for research and development personnel.

General and Administrative Expenses. The increase in general and administrative expenses for the three months ended June 30, 2013 compared to the three months ended June 30, 2012 was primarily attributable to an increase in share-based compensation expense of $0.4 million. The increase was also due to larger personnel, professional services, and facilities costs in 2013 to support the Company’s growth.

Acquired In-Process Research and Development Expenses. The decrease in acquired in-process research and development expenses for the three months ended June 30, 2013 compared to the three months ended June 30, 2012 was due to the absence of milestone payments made to partners related to in-licensing agreements in the second quarter of 2013. In April 2012, we entered into a license agreement with AstraZeneca UK Limited to acquire exclusive rights associated with rucaparib under a family of patents and patent applications that claim methods of treating patients with PARP inhibitors in certain indications. Pursuant to the terms of the license agreement, we made an up-front payment of $250,000 upon execution of the agreement.

Other Income (Expense), Net. The decrease in other income (expense), net for the three months ended June 30, 2013 compared to the three months ended June 30, 2012 was due to a reduction of foreign currency transaction losses. The value of the Euro and Pound Sterling in relation to the U.S. Dollar was less volatile in the second quarter of the current year while both foreign currencies weakened in the same quarter of the prior year.

Comparison of Six Months Ended June 30, 2013 and 2012:

The following table summarizes the results of our operations for the six months ended June 30, 2013 and 2012:

Research and Development Expenses. The increase in research and development expenses for the six months ended June 30, 2013 compared to the six months ended June 30, 2012 was due to an increase in development expenses associated with our CO-1686 and rucaparib product candidates, offset by a reduction of $10.4 million in CO-101 development expenses associated with the wind down of this program. Research and development expenses for CO-1686 increased by $5.0 million due primarily to drug formulation development activities and increased clinical trial costs as we initiated clinical development activities for this program in March 2012. Research and development expenses for rucaparib increased by $3.7 million due primarily to the initiation of two new clinical studies during the second quarter of 2013 and clinical supply manufacturing activities. In the third quarter of 2012, we also initiated a drug discovery program for cKIT inhibitors, resulting in an increase of $2.3 million over the first six months of 2012. The remaining increase is attributable to personnel costs, including a $0.9 million increase in share-based compensation expense for research and development personnel.

General and Administrative Expenses. The increase in general and administrative expenses for the six months ended June 30, 2013 compared to the six months ended June 30, 2012 was primarily attributable to an increase in share-based compensation expense of $0.8 million. The increase was also due to larger personnel and facilities costs in 2013 to support the Company’s growth.

Acquired In-Process Research and Development Expenses. The decrease in acquired in-process research and development expenses for the six months ended June 30, 2013 compared to the six months ended June 30, 2012 was due to a reduction in payments made to partners related to in-licensing agreements. In January 2012, we made a regulatory milestone payment of $4.0 million to Avila Therapeutics, Inc. for the FDA’s acceptance of our IND application to begin clinical investigation of CO-1686.

Other Income (Expense), Net. The decrease in other income (expense), net for the six months ended June 30, 2013 compared to the six months ended June 30, 2012 was due to a reduction in foreign currency transaction losses resulting from an increase in the value of the Euro in relation to the U.S. Dollar.

Liquidity and Capital Resources

Through June 30, 2013, we funded our operations through the private placement of preferred stock and convertible debt securities and the public offering of our common stock. As of June 30, 2013, we have received $75.5 million in net proceeds from the issuance of convertible preferred stock, $27.9 million through the issuance of convertible promissory notes, $458.5 million in net proceeds from the issuance of common stock and $2.8 million in proceeds from stock option exercises. The outstanding principal amount and all accrued and unpaid interest associated with the convertible promissory notes were converted into shares of our common stock immediately prior to the closing of our initial public offering at the initial public offering price of $13.00 per share, in November 2011. As of June 30, 2013, we had cash and cash equivalents totaling $372.2 million.

15

Table of Contents

The following table sets forth the primary sources and uses of cash for the six months ended June 30, 2013 and 2012:

Operating Activities

The cash used in operating activities for all periods resulted primarily from our net losses adjusted for non-cash charges and changes in components of working capital. The cash used in operating activities for all periods reflects the continued development of our product candidates as described in “Results of Operations” above.

Investing Activities

The cash provided by (used in) investing activities for all periods primarily reflects the maturities and sales of available for sale securities, offset by the purchase of property and equipment. The decrease of $1.2 million in cash provided by (used in) investing activities for the six months ended June 30, 2013 compared to the prior year’s respective period was due to a reduction in available for sale security sales and maturities of $2.0 million, offset by a decrease of $0.8 million used for the purchase of property and equipment.

16

Table of Contents

Financing Activities

The cash provided by financing activities for the six months ended June 30, 2013 represents the receipt of $1.4 million in proceeds from the exercise of stock options and employee stock purchase plan and the receipt of $259.1 million in net proceeds from the sale of our common stock in June 2013. The cash provided by financing activities for the six months ended June 30, 2012 reflects the receipt of $70.0 million in net proceeds from the sale of our common stock in April 2012.

Operating Capital Requirements

We anticipate that we will continue to generate significant losses for the foreseeable future as we incur expenses to complete our development activities for each of our programs, including clinical trial activities, companion diagnostic development, drug development, establishing our commercial capabilities, and expanding our general and administrative functions to support the growth in our research and development and commercial organizations.

The net proceeds raised from the sale of securities to date will not be sufficient to fund our operations through successful development and commercialization of our product candidates. As a result, we will need to raise additional capital to fund our operations and continue to conduct clinical trials to support additional development and potential regulatory approval, make milestone payments to our licensors and commercialize our product candidates.

We believe that our existing cash and cash equivalents, will allow us to fund our operating plan through at least the next 12 months. If our available cash and cash equivalents are insufficient to satisfy our liquidity requirements, we may seek to sell additional equity or debt securities or obtain a credit facility. The sale of additional equity and debt securities may result in additional dilution to our shareholders.

In addition, if we raise additional funds through the issuance of debt securities or preferred stock, these securities may have rights senior to those of our common stock and could contain covenants that would restrict our operations. Furthermore, any such required additional capital may not be available on reasonable terms, if at all. If we were unable to obtain additional financing, we may be required to reduce the scope of, delay, or eliminate some or all of our planned development and commercialization activities, which could harm our business.

Because of the numerous risks and uncertainties associated with research, development and commercialization of pharmaceutical products, we are unable to estimate the exact amounts of our working capital requirements. Our future funding requirements will depend on many factors, including but not limited to:

Contractual Obligations and Commitments

For a discussion of our contractual obligations, see “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2012 Annual Report on Form 10-K. There have not been any material changes to such contractual obligations or potential milestone payments since December 31, 2012 aside from those disclosed in Note 10 to the Notes to Unaudited Consolidated Financial Statements included elsewhere in this report.

17

Table of Contents

We are exposed to market risk related to changes in interest rates. As of June 30, 2013, we had cash and cash equivalents of $372.2 million, consisting of bank demand deposits and money market funds that primarily invest in U.S. government obligations. The primary objectives of our investment policy are to preserve principal and maintain proper liquidity to meet operating needs. Our investment policy specifies credit quality standards for our investments and limits the amount of credit exposure to any single issue, issuer or type of investment. Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of U.S. interest rates, particularly because our investments are in short-term securities. Due to the short-term duration of our investment portfolio and the low risk profile of our investments, an immediate 100 basis point change in interest rates would not have a material effect on the fair market value of our portfolio.

We contract with CROs, investigational sites, and contract manufacturers globally. We may be subject to fluctuations in foreign currency rates in connection with these agreements. While we periodically hold foreign currencies, primarily Euro and Pound Sterling, we do not use other financial instruments to hedge our foreign exchange risk. Transactions denominated in currencies other than the functional currency are recorded based on exchange rates at the time such transactions arise. As of June 30, 2013 and December 31, 2012, approximately 14% and 26%, respectively, of our total liabilities were denominated in currencies other than our functional currency.

Disclosure Controls and Procedures

Our disclosure controls and procedures are designed to ensure that information required to be disclosed in the reports we file or submit under the Securities Exchange Act of 1934, as amended, or Exchange Act, is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms, and that such information is accumulated and communicated to our management, including the Chief Executive Officer and the Chief Financial Officer, to allow timely decisions regarding required disclosures. Any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objective. With the participation of our Chief Executive Officer and Chief Financial Officer, management performed an evaluation as of June 30, 2013 of the effectiveness of the design and operation of our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of June 30, 2013, our disclosure controls and procedures were effective at the reasonable assurance level.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during the quarter ended June 30, 2013 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

18

Table of Contents

PART II. OTHER INFORMATION

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

Our business faces significant risks and uncertainties. Certain factors may have a material adverse effect on our business prospects, financial condition and results of operations, and you should carefully consider them. Accordingly, in evaluating our business, we encourage you to carefully consider the risk factors described under the heading “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2012 and in our other public filings with the SEC. Other events that we do not currently anticipate or that we currently deem immaterial may also affect our business, prospects, financial condition and results of operations.

There has not been a material change from the risk factors included in our previously filed Annual Report on Form 10-K for the year ended December 31, 2012. Additional risks and uncertainties not presently known to us or that we currently believe are immaterial also may negatively impact our business.

Use of Proceeds from Sales of Registered Securities

Our initial public offering of common stock was effected through a Registration Statement on Form S-1 (File No. 333-175080) that was declared effective by the Securities and Exchange Commission on November 15, 2011 and registered an aggregate of 11,500,000 shares of our common stock. On November 21, 2011, 10,000,000 shares of common stock were sold on our behalf at an initial public offering price of $13.00 per share, for aggregate gross proceeds of $130.0 million. On November 30, 2011, in connection with the exercise of the underwriters’ over-allotment option, 700,000 additional shares of common stock were sold on our behalf at the initial public offering price of $13.00 per share, for aggregate gross proceeds of $9.1 million. Following the sale of the 10,700,000 shares of common stock, the offering terminated.

We paid to the underwriters underwriting discounts and commissions of approximately $6.9 million in connection with the offering. In addition, we incurred expenses of approximately $2.8 million in connection with the offering, which when added to the underwriting discounts and commissions paid by us, amounts to total expenses of approximately $9.7 million. Thus, the net offering proceeds to us, after deducting underwriting discounts and commissions and offering expenses, were approximately $129.4 million. No offering expenses were paid directly or indirectly to any of our directors or officers (or their associates) or persons owning ten percent or more of any class of our equity securities or to any other affiliates.

As of June 30, 2013, we had used approximately $100.3 million of the net proceeds from our initial public offering to fund operations, capital expenditures, working capital and other general corporate purposes. The remainder of the proceeds have been invested into money market funds.

None.

Not Applicable.

None.

19

Table of Contents

INDEX TO EXHIBITS

20

Table of Contents