AVEO PHARMACEUTICALS, INC. - Quarter Report: 2012 March (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 March 31, 2012

OR

For the transition period from                      to                     .

Commission file number 001-34655

AVEO PHARMACEUTICALS, INC.

(Exact Name of Registrant as Specified in Its Charter)

75 Sidney Street, Cambridge, Massachusetts 02139

(Address of Principal Executive Offices) (Zip Code)

(617) 299-5000

(Registrant’s Telephone Number, Including Area Code)

(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. (Check one):

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

Number of shares of the registrant’s Common Stock, $0.001 par value, outstanding on May 1, 2012: 43,571,982

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AVEO PHARMACEUTICALS, INC.

FORM 10-Q

FOR THE QUARTER ENDED MARCH 31, 2012

TABLE OF CONTENTS

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PART I. FINANCIAL INFORMATION

AVEO PHARMACEUTICALS, INC.

Condensed Consolidated Balance Sheets

(In thousands, except par value amounts)

(Unaudited)

The accompanying notes are an integral part of these unaudited, condensed consolidated financial statements.

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AVEO PHARMACEUTICALS, INC.

Condensed Consolidated Statements of Operations

(In thousands, except per share amounts)

(Unaudited)

The accompanying notes are an integral part of these unaudited, condensed consolidated financial statements.

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AVEO PHARMACEUTICALS, INC.

Condensed Consolidated Statements of Comprehensive Income (Loss)

(In thousands)

(Unaudited)

The accompanying notes are an integral part of these unaudited, condensed consolidated financial statements.

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AVEO PHARMACEUTICALS, INC.

Condensed Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)

The accompanying notes are an integral part of these unaudited, condensed consolidated financial statements.

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AVEO Pharmaceuticals, Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

(1) Organization

AVEO Pharmaceuticals, Inc. (the “Company”), which does business as AVEO Oncology™, is a cancer therapeutics company committed to discovering, developing and commercializing targeted cancer therapies to impact patients’ lives. The Company’s product candidates are directed against important mechanisms, or targets, known or believed to be involved in cancer. Tivozanib, the Company’s lead product candidate currently in phase 3 clinical development, which the Company partnered with Astellas Pharma Inc. and its wholly-owned direct subsidiaries (“Astellas”), is designed to provide an optimal blockade of the vascular endothelial growth factor (“VEGF”) pathway by inhibiting all three VEGF receptors: VEGF receptors 1, 2 and 3. In January 2012, the Company announced top-line data from its global, phase 3 clinical trial comparing the efficacy and safety of tivozanib with Nexavar^® (sorafenib), an approved therapy, for first-line treatment in advanced renal cell carcinoma (“RCC”). Based on these results, the Company expects to file a New Drug Application (“NDA”) seeking U.S. Food and Drug Administration (“FDA”) approval to commercialize and sell tivozanib during the third quarter of 2012. The Company also has a pipeline of monoclonal antibodies, including ficlatuzumab, a product candidate that is currently in phase 2 clinical development, derived from its Human Response Platform™, a novel method of building preclinical models of human cancer. As used throughout these condensed consolidated financial statements, the terms “AVEO,” “we,” “us,” and “our” refer to the business of AVEO Pharmaceuticals, Inc. and its wholly-owned subsidiaries, AVEO Pharma Limited and AVEO Securities Corporation.

(2) Basis of Presentation

These condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. The Company has eliminated all significant intercompany accounts and transactions in consolidation.

The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals and revisions of estimates, considered necessary for a fair presentation of the condensed consolidated financial statements have been included. Interim results for the three months ended March 31, 2012 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2012 or any other future period.

The information presented in the condensed consolidated financial statements and related footnotes at March 31, 2012, and for the three months ended March 31, 2012 and 2011, is unaudited and the condensed consolidated balance sheet amounts and related footnotes at December 31, 2011 have been derived from the Company’s audited financial statements. For further information, refer to the consolidated financial statements and accompanying footnotes included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2011, which was filed with the U.S. Securities and Exchange Commission on March 30, 2012.

(3) Significant Accounting Policies

Revenue Recognition

The Company’s revenues are generated primarily through collaborative research, development and commercialization agreements. The terms of these agreements generally contain multiple elements, or deliverables, which may include (i) licenses, or options to obtain licenses, to the Company’s technology, (ii) research and development activities to be performed on behalf of the collaborative partner, and (iii) in certain cases, services in connection with the manufacturing of pre-clinical and clinical material. Payments to the Company under these arrangements typically include one or more of the following: non-refundable, up-front license fees; option exercise fees; funding of research and/or development efforts; milestone payments; and royalties on future product sales.

When evaluating multiple element arrangements, the Company considers whether the deliverables under the arrangement represent separate units of accounting. This evaluation requires subjective determinations and requires management to make judgments about the individual deliverables and whether such deliverables are separable from the other aspects of the contractual relationship. In determining the units of accounting, management evaluates certain criteria, including whether the deliverables have standalone value, based on the consideration of the relevant facts and circumstances for each arrangement. The consideration received is allocated among the separate units of accounting using the relative selling price method, and the applicable revenue recognition criteria are applied to each of the separate units.

The Company determines the estimated selling price for deliverables within each agreement using vendor-specific objective evidence (“VSOE”) of selling price, if available, third-party evidence (“TPE”) of selling price if VSOE is not available, or best estimate of selling price if neither VSOE nor TPE is available. Determining the best estimate of selling price for a deliverable requires significant judgment. The Company typically uses best estimate of selling price to estimate the selling price for licenses to the

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Company’s proprietary technology, since the Company often does not have VSOE or TPE of selling price for these deliverables. In those circumstances where the Company utilizes best estimate of selling price to determine the estimated selling price of a license to the Company’s proprietary technology, the Company considers market conditions as well as entity-specific factors, including those factors contemplated in negotiating the agreements as well as internally developed models that include assumptions related to the market opportunity, estimated development costs, probability of success and the time needed to commercialize a product candidate pursuant to the license. In validating the Company’s best estimate of selling price, the Company evaluates whether changes in the key assumptions used to determine the best estimate of selling price will have a significant effect on the allocation of arrangement consideration between multiple deliverables.

The Company typically receives up-front, non-refundable payments when licensing its intellectual property in conjunction with a research and development agreement. When management believes the license to its intellectual property does not have stand-alone value from the other deliverables to be provided in the arrangement, the Company generally recognizes revenue attributed to the license on a straight-line basis over the Company’s contractual or estimated performance period, which is typically the term of the Company’s research and development obligations. If management cannot reasonably estimate when the Company’s performance obligation ends, then revenue is deferred until management can reasonably estimate when the performance obligation ends. When management believes the license to its intellectual property has stand-alone value, the Company generally recognizes revenue attributed to the license upon delivery. The periods over which revenue should be recognized are subject to estimates by management and may change over the course of the research and development agreement. Such a change could have a material impact on the amount of revenue the Company records in future periods.

Payments or reimbursements resulting from the Company’s research and development efforts for those arrangements where such efforts are considered as deliverables are recognized as the services are performed and are presented on a gross basis so long as there is persuasive evidence of an arrangement, the fee is fixed or determinable, and collection of the related receivable is reasonably assured. Amounts received prior to satisfying the above revenue recognition criteria are recorded as deferred revenue in the accompanying balance sheets.

At the inception of each agreement that includes milestone payments, the Company evaluates whether each milestone is substantive and at risk to both parties on the basis of the contingent nature of the milestone. This evaluation includes an assessment of whether (a) the consideration is commensurate with either (1) the entity’s performance to achieve the milestone, or (2) the enhancement of the value of the delivered item(s) as a result of a specific outcome resulting from the entity’s performance to achieve the milestone, (b) the consideration relates solely to past performance, and (c) the consideration is reasonable relative to all of the deliverables and payment terms within the arrangement. The Company evaluates factors such as the scientific, regulatory, commercial and other risks that must be overcome to achieve the respective milestone, the level of effort and investment required to achieve the respective milestone and whether the milestone consideration is reasonable relative to all deliverables and payment terms in the arrangement in making this assessment.

The Company aggregates its milestones into four categories: (i) clinical and development milestones, (ii) regulatory milestones, (iii) commercial milestones, and (iv) patent-related milestones. Clinical and development milestones are typically achieved when a product candidate advances into a defined phase of clinical research or completes such phase. For example, a milestone payment may be due to the Company upon the initiation of a phase 3 clinical trial for a new indication, which is the last phase of clinical development and could eventually contribute to marketing approval by the FDA or other global regulatory authorities. Regulatory milestones are typically achieved upon acceptance of the submission for marketing approval of a product candidate or upon approval to market the product candidate by the FDA or other global regulatory authorities. For example, a milestone payment may be due to the Company upon the FDA’s acceptance of an NDA. Commercial milestones are typically achieved when an approved pharmaceutical product reaches certain defined levels of net sales by the licensee, such as when a product first achieves global sales or annual sales of a specified amount. Patent-related milestones are typically achieved when a patent application is filed or issued with respect to certain intellectual property related to the applicable collaboration.

Revenues from clinical and development, regulatory and patent-related milestone payments, if the milestones are deemed substantive and the milestone payments are nonrefundable, are recognized upon successful accomplishment of the milestones. The Company has concluded that the clinical and development, regulatory and patent-related milestones pursuant to its research and development arrangements are substantive. Milestones that are not considered substantive are accounted for as license payments and recognized on a straight-line basis over the remaining period of performance. Revenues from commercial milestone payments are accounted for as royalties and are recorded as revenue upon achievement of the milestone, assuming all other revenue recognition criteria are met.

Principles of Consolidation

The Company’s consolidated financial statements include the Company’s accounts and the accounts of the Company’s wholly-owned subsidiaries, AVEO Pharma Limited and AVEO Securities Corporation. All intercompany transactions have been eliminated.

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Research and Development Expenses

Research and development expenses are charged to expense as incurred. Research and development expenses comprise costs incurred in performing research and development activities, including personnel-related costs, stock-based compensation, facilities, research-related overhead, clinical trial costs, manufacturing costs and other contracted services, license fees, and other external costs.

Nonrefundable advance payments for goods and services that will be used in future research and development activities are expensed when the activity has been performed or when the goods have been received rather than when the payment is made in accordance with the provisions of Accounting Standards Codification (“ASC”) 730, Research and Development (“ASC 730”).

Cash and Cash Equivalents

The Company considers highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Cash equivalents at March 31, 2012 consist of money market funds, commercial paper, and asset-backed commercial paper. Cash equivalents at December 31, 2011 consisted of a money market fund and commercial paper.

Marketable Securities

Marketable securities at March 31, 2012 and December 31, 2011 consist of U.S. government agency securities, a foreign government bond, asset-backed securities, and corporate debt securities, including commercial paper, maintained by an investment manager. Credit risk is reduced as a result of the Company’s policy to limit the amount invested in any one issue. Marketable securities consist primarily of investments which have expected average maturity dates in excess of three months, but not longer than 24 months. The Company classifies these investments as available-for-sale. Unrealized gains and losses are included in other comprehensive income (loss) as a component of stockholders’ equity until realized. The cost of securities sold is based on the specific identification method. There were no realized gains or losses recognized on the sale or maturity of securities during the three months ended March 31, 2012 and 2011.

Available-for-sale securities at March 31, 2012 and December 31, 2011 consist of the following:

The aggregate fair value of securities in an unrealized loss position for less than 12 months at March 31, 2012 was $38.5 million, representing ten securities. There were no securities that were in an unrealized loss position for greater than 12 months at March 31, 2012. The unrealized loss was caused by a temporary change in the market for those securities. There was no change in the credit risk of the securities. To determine whether an other-than-temporary impairment exists, the Company performs an analysis to assess whether it intends to sell, or whether it would more likely than not be required to sell, the security before the expected recovery of the amortized cost basis. Where the Company intends to sell a security, or may be required to do so, the security’s decline in fair value is deemed to be other-than-temporary and the full amount of the unrealized loss is recorded in the statement of operations as an other-than-temporary impairment charge. When this is not the case, the Company performs additional analysis on all securities with unrealized losses to evaluate losses associated with the creditworthiness of the security. Credit losses are identified where the Company does not expect to receive cash flows, based on using a single best estimate, sufficient to recover the amortized cost basis of a security and these are recognized in other income (expense), net.

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Marketable securities in an unrealized loss position at March 31, 2012 and December 31, 2011 consist of the following:

Based on consideration of those factors described in the previous paragraph, the Company does not believe an other-than temporary impairment exists with respect to those securities in an unrealized loss position at March 31, 2012.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to credit risk primarily consist of cash and cash equivalents and available-for-sale marketable securities. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits.

Management believes that the Company is not exposed to significant credit risk due to the financial position of the depository institutions in which those deposits are held.

The Company’s credit risk related to marketable securities is reduced as a result of the Company’s policy to limit the amount invested in any one issue.

Fair Value Measurements

The carrying amounts of the Company’s financial instruments not required to be measured at fair value, which include accounts receivable, and accounts payable, approximate their fair values at March 31, 2012 and December 31, 2011.

The Company records cash equivalents, and marketable securities at fair value. ASC 820, Fair Value Measurements and Disclosures, establishes a fair value hierarchy for those instruments measured at fair value that distinguishes between fair value measurements based on market data (observable inputs) and those based on the Company’s own assumptions (unobservable inputs). The hierarchy consists of three levels:

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The following tables summarize the cash equivalents and marketable securities measured at fair value on a recurring basis in the accompanying consolidated balance sheets as of March 31, 2012 and December 31, 2011.

The fair value of the Company’s loans payable at March 31, 2012, computed pursuant to a discounted cash flow technique using the effective rate under the loan, is $23.2 million. The effective interest rate considers the fair value of the warrant, loan issuance costs and the deferred charge. This fair value measurement is categorized in Level 3 of the fair value hierarchy described above.

Property and Equipment

Property and equipment are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the respective assets. Maintenance and repair costs are charged to expense as incurred.

Long-lived Assets

The Company reviews long-lived assets, including property and equipment, for impairment whenever changes in business circumstances indicate that the carrying amount of the asset may not be fully recoverable. The Company has not recognized any impairment losses through March 31, 2012.

Basic and Diluted Income (Loss) per Common Share

The Company reports earnings (loss) per share in accordance with ASC 260, Earnings Per Share, which establishes standards for computing and presenting earnings per share. Basic earnings (loss) per share is computed by dividing net income (loss) available to common shareholders by the weighted average number of common shares outstanding during the period. Preferred shares are not included in the calculation of net income (loss) per share until their conversion to common shares. Diluted earnings per share is computed by dividing net income available to common shareholders by the weighted-average number of common shares and dilutive common share equivalents then outstanding. Potential common share equivalents consist of restricted stock awards and the incremental common shares issuable upon the exercise of stock options and warrants. Under the treasury stock method, unexercised “in-the-money” stock options are assumed to be exercised at the beginning of the period or at issuance, if later. The assumed proceeds are then used to purchase common shares at the average market price during the period. Share-based payment awards that entitle their holders to receive non-forfeitable dividends before vesting are considered participating securities and are included in the calculation of basic and diluted earnings per share. Common share equivalents have not been included in the net loss per share computation for the three months ended March 31, 2012 because their effect is anti-dilutive.

Basic and diluted earnings per share for the three months ended March 31, 2012 and 2011 are as follows:

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Stock-Based Compensation

The Company applies the provisions of ASC 718, Compensation-Stock Compensation (“ASC 718”), to share-based payments. All awards are recognized in the Company’s statements of operations on a straight-line basis over their requisite service periods based on their grant date fair values as calculated using the measurement and recognition provisions of ASC 718. During the three months ended March 31, 2012 and 2011, respectively, the Company recorded the following stock-based compensation expense:

Allocations to research and development and general and administrative expense are based upon the department to which the associated employee reported. No related tax benefits of the stock-based compensation expense have been recognized. Share-based payments issued to nonemployees are recorded at their fair values, and are periodically revalued as the equity instruments vest and are recognized as expense over the related service period.

Income Taxes

The Company provides for income taxes using the liability method. Under this method, deferred tax assets and liabilities are determined based on differences between financial reporting and tax bases of assets and liabilities, and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse.

The Company accounts for income taxes under ASC 740, Income Taxes (“ASC 740”), which provides a comprehensive model for the financial statement recognition, measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns. Unrecognized tax benefits represent tax positions for which reserves have been established.

Segment and Geographic Information

Operating segments are defined as components of an enterprise engaging in business activities for which discrete financial information is available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The Company views its operations and manages its business in one operating segment and the Company operates in only one geographic segment.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires the Company’s management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

New Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs (“ASU 2011-04”). ASU 2011-04 amends ASC 820, Fair Value Measurement, to ensure that fair value has the same meaning in U.S. Generally Accepted Accounting Principles (“GAAP”) and International Financial Reporting Standards (“IFRS”) and improves the comparability of the fair

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value measurement and disclosure requirements in U.S. GAAP and IFRS. ASU 2011-04 applies to all entities that measure assets, liabilities or instruments classified in shareholders’ equity at fair value, or provide fair value disclosures for items not recorded at fair value. ASU 2011-04 results in common fair value measurement and disclosure requirements in U.S. GAAP and IFRS. Consequently, ASU 2011-04 changes the wording used to describe many of the requirements in U.S. GAAP for measuring fair value and for disclosing information about fair value measurements. For many of the requirements, ASU 2011-04 will not result in a change in the application of the requirements in ASC 820. Some of the requirements in ASU 2011-04 clarify the FASB’s intent about the application of existing fair value measurement requirements. Other requirements change a particular principle or requirement for measuring fair value or for disclosing information about fair value measurements. The Company adopted this ASU effective January 1, 2012. The adoption of the provisions of this guidance did not have a material impact on the Company’s results of operations, cash flows, and financial position.

In June 2011, the FASB issued ASU 2011-05, Presentation of Comprehensive Income, which amended the presentation requirements for comprehensive income. For public entities, this guidance was effective for fiscal years, and interim periods within those years, beginning after December 15, 2011 with early adoption permitted. Subsequently, in December 2011, the FASB deferred the effective date of the portion of the June 2011 accounting standards update requiring separate presentation of reclassifications out of accumulated other comprehensive income. Upon adoption on January 1, 2012, the Company had the option to report total comprehensive income, including components of net income and components of other comprehensive income, as a single continuous statement or in two separate but consecutive statements. The Company elected to present comprehensive income in two separate but consecutive statements as part of the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q. The adoption did not have a material impact on the Company’s condensed consolidated financial statements.

Subsequent Events

The Company has evaluated all events or transactions that occurred after March 31, 2012 through the date the Company issued these financial statements.

(4) Collaborations and License Agreements

Astellas Pharma

On February 16, 2011, the Company, together with its wholly-owned subsidiary AVEO Pharma Limited, entered into a Collaboration and License Agreement with Astellas (the “Astellas Agreement”), pursuant to which the Company and Astellas will develop and commercialize tivozanib, AVEO’s product candidate currently in phase 3 clinical development, for the treatment of a broad range of cancers, including RCC and breast and colorectal cancers. Under the terms of the Astellas Agreement, AVEO and Astellas will share responsibility for continued development and commercialization of tivozanib in North America and in Europe under a joint development plan and a joint commercialization plan, respectively. Throughout the rest of the world (the “Royalty Territory”), excluding Asia, where Kyowa Hakko Kirin (“KHK”) has retained all development and commercialization rights, Astellas has an exclusive, royalty-bearing license to develop and commercialize tivozanib. The terms of the Astellas Agreement are subject to the Company’s obligations to KHK under a license agreement entered into with KHK in 2006 pursuant to which AVEO acquired exclusive rights to develop and commercialize tivozanib worldwide outside of Asia.

Assuming successful approvals of tivozanib by applicable regulatory agencies, the Company will have lead responsibility for formulating the commercialization strategy for North America under the joint commercialization plan, with each of the Company and Astellas responsible for conducting fifty percent (50%) of the sales efforts and medical affairs activities in North America. Astellas will have lead responsibility for commercialization activities in Europe under the joint commercialization plan, with each of the Company and Astellas responsible for conducting fifty percent (50%) of the medical affairs activities in the major European countries. All costs associated with each party’s conduct of development and commercialization activities (including clinical manufacturing and commercial manufacturing costs, if any) in North America and Europe, and any resulting profits or losses, will be shared equally between the parties.

Under the Astellas Agreement, the Company received an initial cash payment of $125 million, comprised of a $75 million license fee and $50 million in research and development funding. The Company retained net proceeds of approximately $97.6 million of the initial cash payment from Astellas, after payments to KHK and strategic, legal and financial advisors. The Company is also eligible to receive from Astellas an aggregate of approximately $1.3 billion in potential milestone payments, comprised of (i) up to $85 million in substantive milestone payments upon achievement of specified clinical and development milestone events, (ii) up to $490 million in substantive milestone payments upon achievement of specified regulatory milestone events, including up to $90 million in milestone payments in connection with specified regulatory filings and receipt of marketing approvals, for tivozanib to treat RCC in the United States and Europe, and (iii) up to approximately $780 million in milestone payments upon the achievement of specified commercial sales events. The first anticipated clinical and development milestone is due to the Company upon initiation of its next phase 3 clinical trial of tivozanib. The timing of this milestone is uncertain, as the Company has not finalized plans for its future trials. Significant potential near-term regulatory milestones include acceptance by the FDA of the first filing of an NDA for RCC (monotherapy) ($15 million) and acceptance by the European Medicines Agency of the first filing of a Marketing Authorization Application ($15 million). In addition, if tivozanib is successfully developed and launched in the Royalty Territory, Astellas will be required to pay to AVEO tiered, double digit royalties on net sales of tivozanib in the Royalty Territory, if any, subject to offsets under

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certain circumstances. The Company is required to pay KHK low to mid-teen royalties on its net sales in North America, and 30% of certain amounts the Company may receive from Astellas in connection with Astellas’ development and commercialization activities in Europe and the Royalty Territory, including up-front license fees, milestone payments and royalties.

Unless terminated earlier in accordance with its terms, the Astellas Agreement expires (a) with respect to the Royalty Territory, on a country by-country basis, upon the latest to occur of: (i) the expiration of the last-to-expire valid claim of an AVEO patent or joint patent covering the composition of tivozanib, (ii) the expiration of the last-to-expire valid claim of an AVEO patent or joint patent covering the use of tivozanib, but only for so long as no generic competition exists in such country, and (iii) twelve years from first commercial sale of tivozanib in such country; and (b) with respect to North America and Europe as a whole, upon the expiration of all payment obligations between the parties related to development and commercialization of tivozanib in North America and Europe. After the second anniversary of the effective date of the Astellas Agreement, Astellas has the right to terminate the Astellas Agreement, in its entirety or solely with respect to the Royalty Territory, at any time upon 180 days prior written notice to the Company. Either party may terminate the Astellas Agreement with respect to a specified territory or country as set forth in the Astellas Agreement, if the other party fails to cure a material breach related to such territory or country, as applicable. The Company may also terminate the Astellas Agreement in its entirety upon a patent-related challenge by Astellas, its affiliates or sublicensees if such patent-related challenge is not withdrawn within 30 days following the Company’s notice to Astellas of such termination. There are no refund provisions in the Astellas Agreement.

The Company is accounting for the joint development and commercialization activities in North America and Europe as a joint risk sharing collaboration in accordance with ASC 808, Collaborative Arrangements. In addition, these activities were not deemed to be separate deliverables under the Astellas Agreement.

Payments from Astellas with respect to Astellas’ share of tivozanib development and commercialization costs incurred by the Company pursuant to the joint development plan are recorded as a reduction to research and development expense and general and administrative expense in the accompanying consolidated financial statements due to the joint risk-sharing nature of the activities in North America and Europe. As a result of the cost-sharing provisions in the Astellas Agreement, the Company reduced research and development expense by $8.0 million and $6.2 million during the three months ended March 31, 2012 and 2011, respectively, and general and administrative expense by $0.6 million and $0.2 million during the three months ended March 31, 2012 and 2011, respectively. The net amount due to the Company from Astellas pursuant to the cost-sharing provisions was $8.6 million at March 31, 2012.

Activities under the Astellas Agreement outside of the joint development and commercialization activities in North America and Europe, including the co-exclusive license to develop and commercialize tivozanib in North America and Europe that was delivered prior to the initiation of the collaborative activities in North America and Europe, were evaluated under ASC 605-25, Revenue Recognition – Multiple Element Arrangements (“ASC 605-25”) (as amended by ASU 2009-13, Revenue Recognition (“ASU 2009-13”)) to determine if they represented a multiple element revenue arrangement. The Astellas Agreement includes the following deliverables: (1) a co-exclusive license to develop and commercialize tivozanib in North America and Europe (the “License Deliverable”); (2) a combined deliverable comprised of an exclusive royalty-bearing license to develop and commercialize tivozanib in the Royalty Territory and the Company’s obligation to provide access to clinical and regulatory information resulting from the activities in North America and Europe to Astellas for its development and commercialization of tivozanib in the Royalty Territory (the “Royalty Territory Deliverable”); and (3) the Company’s obligation to supply clinical material to Astellas for development of tivozanib in the Royalty Territory (the “Clinical Material Deliverable”). The License Deliverable is not sublicensable. Astellas has the right to sublicense the exclusive royalty-bearing license to develop tivozanib in the Royalty Territory. The Company’s obligation to provide access to clinical and regulatory information as part of the Royalty Territory Deliverable includes the obligation to provide access, upon request, to all clinical data, regulatory filings, safety data and manufacturing data to Astellas for use in the development of tivozanib in the Royalty Territory. The Clinical Material Deliverable includes the obligation to supply clinical material to Astellas in accordance with current good manufacturing practices applicable to clinical materials and other relevant regulatory authority requirements, upon request, for the development of tivozanib in the Royalty Territory. All of these deliverables were deemed to have stand-alone value and to meet the criteria to be accounted for as separate units of accounting under ASC 605-25. Factors considered in this determination included, among other things, the subject of the licenses and the research and development and commercial capabilities of Astellas.

The Company allocated the up-front consideration of $125 million to the deliverables based on management’s best estimate of selling price of each deliverable using the relative selling price method as the Company did not have VSOE or TPE of selling price for such deliverables. The Company’s best estimate of selling price considered discounted cash flow models, the key assumptions of which included the market opportunity for commercialization of tivozanib in North America and Europe and the Royalty Territory, the probability of successfully developing and commercializing tivozanib, the remaining development costs for tivozanib, and the estimated time to commercialization of tivozanib. The Company’s analysis included the following market conditions and entity-specific factors: (a) the specific rights provided under the license to develop and commercialize tivozanib in North America and Europe and the Royalty Territory, (b) the potential indications for tivozanib pursuant to the licenses, (c) the relevant territories for the respective licenses, (d) the stage of development of tivozanib by potential indication and estimated remaining development timelines and costs for each indication, (e) the development risk by indication, (f) the market size by indication, (g) the expected product life of

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tivozanib assuming commercialization and (h) the competitive environment. More specifically, the Company’s discounted cash flow model included an assumption that the Company and Astellas would develop and commercialize tivozanib in North America and Europe as a monotherapy for RCC, and in combination with other known anti-cancer agents for RCC, breast cancer and colorectal cancer. Approximately 70% of the value of tivozanib in the discounted cash flow model was a result of the estimated market opportunity for tivozanib as a monotherapy for RCC. The market opportunity for commercialization of tivozanib in North America and Europe was generated using a patient-based forecasting approach, with key epidemiological, market penetration, dosing, compliance, length of treatment, and pricing assumptions derived from primary and secondary market research. While the RCC monotherapy opportunity represented the majority of the market opportunity, clinical trials for tivozanib in the breast cancer and colorectal cancer indications were in earlier stages of development and therefore had more development risk and were assigned a lower probability of success relative to the RCC indication, with a longer timeline to potential cash inflows. The probability of successfully developing and commercializing tivozanib in the various indications throughout the world (other than Asia) was estimated based on standard industry averages for similar product candidates being developed for oncology indications. The remaining development costs were estimated based upon budgets and estimated costs for ongoing and planned clinical trials in all contemplated indications. The time to commercialization was based on the Company’s estimates, which projected the launch of tivozanib for RCC monotherapy in 2013. The market opportunity for the Royalty Territory was estimated based upon a specified percentage of total projected European sales and costs of tivozanib. The Company believes that this method for estimating market opportunity outside of North America, Europe and Asia is common in the pharmaceuticals industry. The Company utilized a discount rate of 15% in its analysis, representing the weighted average cost of capital derived from returns on equity for comparable companies.

The Company concluded that a change in the key assumptions used to determine best estimate of selling price for each license deliverable would not have a significant effect on the allocation of arrangement consideration.

The Company allocated up-front consideration of $120.2 million to the License Deliverable and up-front consideration of $4.8 million to the Royalty Territory Deliverable. The relative selling price of the Company’s obligation under the Clinical Material Deliverable had de minimus value.

The Company recorded the $120.2 million relative selling price of the License Deliverable as collaboration revenue during the three months ended March 31, 2011 upon delivery of the license, and deferred approximately $4.8 million of revenue representing the relative selling price of the Royalty Territory Deliverable. The Company is recording the $4.8 million of revenue attributed to the Royalty Territory Deliverable ratably over the Company’s period of performance through April 2022, the remaining patent life of tivozanib. The Company estimated the period of performance considering that the Company and Astellas plan to develop tivozanib in several indications outside of RCC, including in breast cancer and colorectal cancer and potentially in other cancer indications. The clinical development of tivozanib in these indications is in earlier stages of development and, as a result, the clinical development timeline is uncertain and is expected to change as the Company obtains additional clinical data in these indications. As a result, the Company estimated the period of performance as the remaining patent life of tivozanib as it represents the longest period over which development of tivozanib could occur. The Company reassesses the period of performance at each reporting period. The Company recorded approximately $107,000 and $54,000 of revenue associated with the Royalty Territory Deliverable during the three months ended March 31, 2012 and 2011, respectively.

The Company believes the clinical and development and regulatory milestones that may be received under the Astellas Agreement are consistent with the definition of a milestone included in ASU 2010-17, Revenue Recognition – Milestone Method, and, accordingly, the Company will recognize payments related to the achievement of such milestones, if any, when such milestone is achieved. Factors considered in this determination included scientific and regulatory risks that must be overcome to achieve each milestone, the level of effort and investment required to achieve each milestone, and the monetary value attributed to each milestone. The Company did not recognize any milestone payments under the Astellas arrangement during the three months ended March 31, 2012 or 2011.

Centocor Ortho Biotech

In May 2011, the Company entered into an exclusive license agreement (the “Centocor License Agreement”) with Centocor Ortho Biotech Inc. (“Centocor”), for the worldwide development and commercialization of the Company’s internally-discovered antibodies targeting the RON receptor (Recepteur d’Origine Nantais), including the grant to Centocor of an exclusive, worldwide license to the Company’s proprietary RON-driven tumor models. The Company also granted Centocor a nonexclusive, non-sublicensable, worldwide license to the Company’s proprietary list of human genes intended to predict correlation of response to RON-targeted antibodies, (the “RON index”). Centocor is responsible for all clinical development, manufacturing and commercialization activities and costs. Subject to an agreed-upon research plan and budget, Centocor will also fund certain research for a three-year term to be conducted by the Company, including translational research studies using the Company’s proprietary Human Response Platform to identify biomarkers for patients most likely to benefit from treatment with RON targeted antibodies.

In connection with the Centocor License Agreement, the Company received a one-time cash payment in the amount of $7.5 million and a separate equity investment in the amount of approximately $7.5 million through the purchase by Johnson & Johnson Development Corporation, an affiliate of Centocor, of 438,340 newly issued shares of the Company’s common stock at a purchase

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price of $17.11 per share. Milestone payments for the successful development and commercialization of a RON-targeted antibody, if all approvals in multiple indications and all sales milestones are achieved, could total, in the aggregate, $540 million, comprised of (i) up to $40 million in substantive milestone payments upon achievement of specified clinical and development milestone events, (ii) up to $165 million in substantive milestone payments upon achievement of specified regulatory milestone events in connection with specified regulatory filings, and receipt of marketing approvals, and (iii) up to $335 million in milestone payments upon the achievement of specified sales events. The Company could earn the first clinical and development milestone of $2 million under the Centocor License Agreement upon the selection of a lead antibody for entry into pre-clinical studies, with respect to the first licensed product under the agreement. The Company expects to achieve this milestone during the year ending December 31, 2012. Upon commercialization, the Company is eligible to receive tiered double-digit royalty payments on Centocor’s net sales of any RON-targeted antibody, as a percentage of net sales. Centocor’s royalty obligations in a particular country begin on the date of first commercial sale of a product in that country, and end on the later of 10 years after the date of first commercial sale of the product in that country or the date of the last to expire of the issued patents covering the product in that country. All milestone payments and royalties will be reduced by a certain percentage if Centocor develops or commercializes a RON-targeted antibody which has incorporated significant, meaningful improvements made after a specified period by Centocor to the antibodies delivered by the Company. The royalties will also be reduced by a certain percentage on a country-by-country basis upon the entry of a generic competitor.

The Centocor License Agreement will remain in effect until the expiration of all of Centocor’s royalty obligations to the Company, determined on a product-by-product and country-by-country basis. Prior to the filing of an investigational new drug application with the FDA or a similar application filed with another regulatory authority outside of the United States (“IND Submission”), Centocor has the right to terminate the Centocor License Agreement at will upon 90 days written notice to the Company. After IND Submission, Centocor may terminate the Centocor License Agreement at will upon 180 days written notice to the Company. Either party has the right to terminate the Centocor License Agreement in connection with an insolvency event involving the other party or a material breach of the Centocor License Agreement by the other party that remains uncured for a specified cure period. In the event that Centocor terminates the Centocor License Agreement at will, or if the Company terminates the Centocor License Agreement due to Centocor’s material breach or insolvency, worldwide rights to the development, manufacture, and commercialization of RON-targeted antibodies revert back to the Company. There are no refund provisions in the Centocor License Agreement.

As noted above, Johnson & Johnson Development Corporation paid $7.5 million for 438,340 shares of the Company’s common stock at a purchase price of $17.11 per share, which reflected the average of the daily volume weighted average prices for the Company’s common stock for the 30 consecutive trading days ending on May 26, 2011. This weighted average sales price of $17.11 per share resulted in a $1.22 per share discount from the May 31, 2011 closing price of $18.33 per share, or a discount of $534,775 from the fair market value of the common stock on the effective date of the Centocor License Agreement. The Company determined this transaction was not within the scope of ASC 605-25 and, accordingly, the Company recorded the sale of common stock to Johnson & Johnson Development Corporation at fair value based on the closing price of the Company’s stock on May 31, 2011 of $18.33 per share.

The remaining activities under the Centocor License Agreement were evaluated under ASC 605-25 (as amended by ASU 2009-13) to determine if they represented a multiple element revenue arrangement. The Company determined that the Centocor License Agreement included the following deliverables:

The Company determined that each deliverable had stand-alone value upon delivery and therefore represents a separate unit of accounting. Factors considered in this determination included, among other things, the subject of the licenses and the research and development and commercial capabilities of Centocor.

The Company excluded the fair value of the common stock purchased by Johnson & Johnson Development Corporation from the arrangement consideration to be allocated to the identified deliverables and allocated the remaining $7.0 million of up-front consideration attributable to the deliverables based on the relative selling price method. The Company determined the estimated selling price for the RON license and the RON Index license based on management’s best estimate of selling price as the Company did not have VSOE or TPE of selling price for those deliverables. In determining its best estimate of selling price for the RON license and the RON Index license, the Company considered market conditions as well as entity-specific factors, including those factors contemplated in negotiating the Centocor License Agreement and internally developed revenue models. The Company’s best estimate of selling price for the RON license and RON Index license considered discounted cash flow models, the key assumptions of which included the market opportunity for commercialization of a potential product candidate using the RON receptor worldwide, an estimate of costs related to phase 1, 2 and 3 clinical studies with certain multiplication factors related to the probability of success, and the time to commercialization of a potential product candidate. This analysis used various assumptions that are typical for similarly staged monoclonal antibodies and other reasonable cost assumptions in determining research and development, and sales, general and

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administrative costs. More specifically, the Company’s estimate of peak revenues was consistent with what might be expected from an approved antibody product. Other key assumptions included: cost of goods sold, which was assumed to be a specified percentage of revenues based on estimated cost of goods sold of a typical oncology antibody product; clinical trial costs, which were based on estimated clinical costs for a single phase 1 safety study, followed by phase 2 and 3 studies for a single oncology indication; and sales and marketing costs, which were based on the costs required to field an oncology sales force and marketing group, including external costs required to promote an oncology product. The factors used to estimate the probability of success and the time to commercialization of a product candidate were based on standard industry averages for antibodies being developed for oncology indications. The results of the Company’s analysis indicated an estimated selling price for the licenses of approximately $39 million. The analysis used a weighted average cost of capital of 15% derived from returns on equity for comparable companies.

With respect to the research services, the Company considered the nature of the research services to be provided (basic translational research related to a pre-clinical, antibody-based technology) and the fact that other vendors could provide the research services. As a result, the Company concluded that TPE of selling price exists for the research services deliverable. In supporting TPE of selling price, the Company considered the nature of the research services, the rates charged by vendors in the marketplace for similar services and rates charged by the Company for other non-complex, pre-clinical research services in its other license and development agreements.

As the relative selling price of the RON license and RON Index license (the delivered items) exceeds the up-front consideration attributable to the deliverables of $7.0 million, the entire up-front payment was recognized as revenue upon delivery of the licenses during the three months ended June 30, 2011. The Company concluded that a change in the assumptions used to determine estimated selling price for the units of accounting would not have a significant effect on the allocation of arrangement consideration.

The Company will record revenue related to research and development services as the services are delivered at the contractual rate, which approximates fair value for those services.

The Company may be entitled to receive future milestone payments totaling $540 million. The Company believes the clinical and development and regulatory that may be received under the Centocor License Agreement are consistent with the definition of a milestone included in ASU 2010-17 and, accordingly, the Company will recognize payments related to the achievement of such milestones, if any, when such milestone is achieved. Factors considered in this determination included scientific and regulatory risks that must be overcome to achieve each milestone, the level of effort and investment required to achieve each milestone, and the monetary value attributed to each milestone. The Company did not recognize any milestone payments under this arrangement during the three months ended March 31, 2012.

Under the agreement, the Company received cash payments related to research and development services of $690,000 for the three months ended March 31, 2012, and recorded revenue of $517,000 for the three months ended March 31, 2012.

Schering-Plough (now Merck)

In March 2007, the Company entered into an agreement with Schering-Plough Corporation, or Schering-Plough (now Merck & Co., Inc., or Merck), through its subsidiary Schering Corporation, acting through its Schering-Plough Research Institute division, under which the Company granted Merck exclusive, worldwide rights to develop and commercialize all of the Company’s monoclonal antibody antagonists of hepatocyte growth factor, or HGF, including ficlatuzumab, for therapeutic and prophylactic use in humans and for veterinary use. The Company also granted Merck an exclusive, worldwide license to related biomarkers for diagnostic use. The Company also conducted translational research using its Human Response Platform to guide the clinical development of ficlatuzumab. Merck was responsible for all costs related to the clinical development of ficlatuzumab and clinical and commercial manufacturing. On September 28, 2010, the Company received notice from Merck of termination of the collaboration agreement effective as of December 27, 2010, at which point the Company became responsible for the performance and funding of all future research, development, manufacturing and commercialization activities for ficlatuzumab.

Under the agreement, Merck paid the Company an up-front payment of $7.5 million in May 2007, which was being amortized over the Company’s period of substantial involvement, which was initially estimated to be through completion of the first phase 2 proof-of-concept trial for ficlatuzumab (which was expected to be the first half of 2012), but was adjusted to reflect the termination of the agreement effective on December 27, 2010. In addition, Merck purchased 4,000,000 shares of the Company’s series D convertible preferred stock, at a per share price of $2.50, resulting in gross proceeds to the Company of $10.0 million. The amount paid for the series D convertible preferred stock represented fair value as it was the same as the amounts paid by unrelated investors in March and April 2007. In connection with the initial public offering which the Company consummated in March 2010, and the related 1:4 reverse stock split of the Company’s common stock, each four shares of outstanding series D convertible preferred stock were converted into one share of common stock.

In June 2010, the Company earned and received an $8.5 million milestone payment in connection with the enrollment of patients in the Company’s phase 2 clinical trial of ficlatuzumab under the agreement. Since the $8.5 million milestone payment earned in June 2010 and was considered substantive, it was included in revenue for the year ended December 31, 2010.

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In March 2011, in connection with the transition of responsibility for the ficlatuzumab program from Merck back to the Company, the Company made a $10.2 million payment to Merck for the purchase of a supply of ficlatuzumab to support ongoing clinical studies. The Company took title to approximately $1.1 million of this material as of March 31, 2011 and, pursuant to the provisions of ASC 730, recognized this amount as research and development expense during the three months ended March 31, 2011.

OSI Pharmaceuticals

In September 2007, the Company entered into a collaboration and license agreement with OSI Pharmaceuticals, Inc., (a wholly-owned subsidiary of Astellas US Holding Inc., a holding company owned by Astellas Pharma Inc.) or OSI, which provided for the use of the Company’s proprietary in vivo models by the Company’s scientists at its facilities, use of the Company’s bioinformatics tools and other target validation and biomarker research to further develop and advance OSI’s small molecule drug discovery and translational research related to cancer and other diseases. In July 2009, the Company and OSI expanded the strategic partnership, and the Company granted OSI a non-exclusive license to use the Company’s proprietary bioinformatics platform, and non-exclusive perpetual licenses to use bioinformatics data and the Company’s proprietary gene index related to a specific target pathway. Further, as part of the expanded strategic partnership, the Company granted OSI an option, exercisable upon payment of an option fee, to receive non-exclusive perpetual rights to certain elements of the Company’s Human Response Platform and to use the Company’s bioinformatics platform, and the Company granted OSI the right to obtain certain of its tumor models and tumor archives.

The Company accounts for the OSI arrangement pursuant to ASC 605-25. The deliverables under the arrangement include use of the Company’s proprietary in vivo models, research and development services provided using the Company’s proprietary in vivo models by the Company’s scientists at its facilities, use of the Company’s bioinformatics tools and other target validation and biomarker research to further develop and advance OSI’s small molecule drug discovery, translational research related to cancer and other diseases and a non-exclusive license to use the Company’s proprietary bioinformatics platform, and non-exclusive perpetual licenses to use bioinformatics data and a Company proprietary gene index related to a specific target pathway. Since these services were provided using the Company’s proprietary technology, management concluded the arrangement should be accounted for as a single unit of accounting.

Under the agreement, OSI paid the Company an up-front payment of $7.5 million, which was recorded in deferred revenue and was amortized over the Company’s period of substantial involvement, which ended in July 2011 (the date the Company satisfied its performance obligations under the OSI arrangement). OSI also paid the Company $2.5 million for the first year of research program funding, which was recorded in deferred revenue and was recognized as revenue over the performance period and, thereafter, OSI made research payments of $625,000 per quarter through July 2009. In addition, OSI purchased 1,833,334 shares of Series C Convertible Preferred Stock, at a per share price of $3.00, resulting in gross proceeds to the Company of $5.5 million. The Company determined that the price paid of $3.00 per share by OSI included a premium of $0.50 over the price per share of the Company’s Series D Convertible Preferred Stock sold in April 2007; accordingly, the Company recognized the premium of $917,000 as additional license revenue on a straight-line basis over the period of substantial involvement. In connection with the initial public offering consummated by the Company in March 2010 and the related 1:4 reverse stock split of the common stock, each four shares of outstanding Series C Convertible Preferred Stock were converted into one share of common stock.

In consideration for the additional rights provided for pursuant to the July 2009 expanded agreement, OSI paid the Company an up-front payment of $5.0 million, which was recorded in deferred revenue and was amortized over the Company’s remaining period of substantial involvement, which ended in July 2011. OSI also agreed to fund research costs through June 30, 2011. In addition, OSI purchased 3,750,000 shares of Series E Convertible Preferred Stock, at a per share price of $4.00, resulting in gross proceeds to the Company of $15.0 million. In connection with the initial public offering consummated by the Company in March 2010 and the related 1:4 reverse stock split of the common stock, each four shares of outstanding Series E Convertible Preferred Stock were converted into one share of common stock. The Company determined that the price of $4.00 per share paid by OSI included a premium of $1.04 per share over the fair value of the Series E Convertible Preferred Stock of $2.96 as calculated by the Company in its retrospective stock valuation. Accordingly, the Company recognized the premium of $3,900,000 as additional license revenue on a straight-line basis over the period of substantial involvement, which ended in July 2011.

Under the July 2009 expanded agreement, if all applicable milestones are achieved, payments for the successful achievement of discovery, development and commercialization milestones could total, in the aggregate, over $94.0 million for each target and its associated products, comprised of (i) up to $17.6 million in substantive milestone payments upon achievement of specified clinical and development milestone events, (ii) up to $41.3 million in substantive milestone payments upon achievement of specified regulatory milestone events, (iii) up to $35.0 million in milestone payments upon the achievement of specified sales events, and (iv) up to $250,000 in patent related milestones. The first milestone that the Company may receive pursuant to this agreement is either a patent related milestone of $250,000 upon filing of a patent application, or a clinical and development milestone of $750,000 for commencement of GLP toxicology studies. The Company expects to achieve these milestones during the year ending December 31, 2012.

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In addition, the Company is eligible to receive up to $24.0 million in biomarker related milestones. In March 2011, the Company earned $1.5 million related to achieving certain of these research milestones under the agreement. These research milestones were not considered to be substantive; therefore, the $1.5 million in payments was deferred and was recognized on a straight-line basis over the remaining estimated period of substantial involvement, which ended in July 2011. The next regulatory milestone the Company may receive pursuant to this agreement is $7.0 million to be achieved for the filing of the NDA with the FDA. The Company does not expect to achieve this milestone during the year ending December 31, 2012. Upon commercialization of products under the agreement, the Company is eligible to receive tiered royalty payments on sales of products by OSI, its affiliates and sublicensees. All milestones earned to date are for selection of targets, delivery of models, delivery of tumor archives or delivery of cell lines.

The Company did not recognize any substantive milestone payments under this arrangement during the three months ended March 31, 2012 or 2011.

In November 2010, OSI exercised its option under the July 2009 expanded agreement providing the right for OSI to license certain elements of the Company’s proprietary technology platform, including components of the Human Response Platform for the identification/characterization of novel epithelial-mesenchymal transition agents and proprietary patient selection biomarkers, in support of OSI’s clinical development programs. The Company did not consider the option granted to OSI in July 2009 as a deliverable as there was significant uncertainty that this option would ultimately be exercised. The Company received $12.5 million upon delivery of the notice of option exercise, and completed the transfer of the relevant technology to OSI in July 2011. The remaining $12.5 million was paid in July 2011 following the successful transfer of the applicable technology. The Company deferred the initial $12.5 million payment, and recognized the full $25.0 million relating to the option exercise by OSI over the technology transfer period, which was completed in July 2011.

Biogen Idec International GmbH

In March 2009, the Company entered into an exclusive option and license agreement with Biogen Idec International GmbH, a subsidiary of Biogen Idec Inc., collectively referred to herein as “Biogen Idec”, regarding the development and commercialization of the Company’s discovery-stage ErbB3-targeted antibodies for the potential treatment and diagnosis of cancer and other diseases outside of the United States, Canada and Mexico.

The Company accounts for the Biogen Idec arrangement pursuant to ASC 605-25. The deliverables under the arrangement include an option for a co-exclusive, world-wide license to develop and manufacture ErbB3 antibody products and an option for an exclusive license to commercialize ErbB3 antibody products in all countries in the world other than the United States, Canada and Mexico. The Company determined that these deliverables did not have standalone value due to the fact that the program was still in preclinical development and required the Company’s experience to advance development of the product. As such, the Company determined that the agreement should be accounted for as one unit of accounting.

Under the terms of the agreement, Biogen Idec paid the Company an upfront cash payment of $5.0 million in March 2009, which is being amortized over the Company’s period of substantial involvement, defined as the patent life of the development candidate. In addition, Biogen Idec purchased 7,500,000 shares of Series E Convertible Preferred Stock at a per share price of $4.00, resulting in gross proceeds to the Company of $30.0 million. In connection with the initial public offering consummated by the Company in March 2010 and the related 1:4 reverse stock split of the common stock, each four shares of outstanding Series E Convertible Preferred Stock were converted into one share of common stock. The Company determined that the price of $4.00 paid by Biogen Idec included a premium of $1.09 per share over the fair value of the Series E Convertible Preferred Stock of $2.91 as calculated by the Company in its retrospective stock valuation. Accordingly, the Company is recognizing the premium of $8.2 million as revenue on a straight-line basis over the period of substantial involvement. The Company received a $5.0 million milestone payment for achievement of the first pre-clinical discovery milestone under the agreement in June 2009 which was not considered at risk and was therefore deferred and is being recognized over the period of substantial involvement. The Company earned a second $5.0 million milestone payment upon selection of a development candidate in March 2010. This milestone was considered substantive and was included in revenue for the quarter ended March 31, 2010. The Company earned a third $5.0 million milestone payment based on achieving the GLP toxicology initiation milestone in June 2011. This milestone was considered substantive and was included in revenue for the quarter ended June 30, 2011. The Company could also receive an option exercise fee and regulatory milestone payments of up to $45.0 million in the aggregate if Biogen Idec exercises its option to obtain exclusive rights to commercialize ErbB3 antibody products in its territory. The first regulatory milestone the Company may receive pursuant to this agreement of $25.0 million is due upon the receipt of the first regulatory approval of a licensed product from the EMA. The Company does not expect to achieve this milestone in the year ending December 31, 2012.

The Company did not recognize any milestone payments under this arrangement during the three months ended March 31, 2012 or 2011.

If Biogen Idec exercises its exclusive option under the agreement, Biogen Idec will pay the Company royalties on Biogen Idec’s sales of ErbB3 antibody products in its territory, and the Company will pay Biogen Idec royalties on the Company’s sale of ErbB3 antibody products in the United States, Canada and Mexico.

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Kirin Brewery

In December 2006, the Company entered into an exclusive license agreement, with the right to grant sublicenses, subject to certain restrictions, with Kirin Brewery Co. Ltd. (now Kyowa Hakko Kirin) (“KHK”) to research, develop, manufacture and commercialize tivozanib (f/k/a KRN951), pharmaceutical compositions thereof and associated biomarkers in all territories in the world except for Asia (the “KHK Agreement”). Upon entering into the KHK Agreement, the Company made a cash payment in the amount of $5.0 million.

Under the KHK Agreement, the Company may be required to (i) make up to an aggregate of $50.0 million in future milestone payments upon the achievement of specified regulatory milestones, (ii) pay tiered royalty payments on net sales it makes of tivozanib in its territory ranging from the low to mid-teens as a percentage of the Company’s net sales of tivozanib, and (iii) pay 30% of certain amounts the Company receives under the Astellas Agreement in connection with Astellas’ development and commercialization activities in Europe and the Royalty Territory, including up-front license fees, milestone payments and royalties the Company may receive from Astellas. The Company is not obligated to make any payments to KHK in respect of research and development funding or equity investments, subject to certain limitations.

In March 2010, the Company made a $10.0 million milestone payment to KHK in connection with the dosing of the first patient in the Company’s phase 3 clinical trial of tivozanib.

The Company also recorded $22.5 million of research and development expense during the three months ended March 31, 2011 associated with a payment made to KHK related to the up-front license payment received under the Astellas Agreement.

(5) Accrued Expenses

Accrued expenses consisted of the following:

(6) Loans Payable

On May 28, 2010, the Company entered into a loan and security agreement (the “Loan Agreement”) with Hercules Technology II, L.P. and Hercules Technology III, L.P., affiliates of Hercules Technology Growth, pursuant to which the Company received a loan in the aggregate principal amount of $25.0 million. The Company was initially required to repay the aggregate principal balance under the Loan Agreement in 30 equal monthly installments of principal starting on April 1, 2011. However, the Loan Agreement provided that such date would be extended under certain circumstances. During 2011, the Company triggered two possible extensions to the date from which principal payments were to be made, and as a result, the initial date for principal repayment was extended to January 1, 2012. On March 31, 2012, the Company entered into an amendment to the Loan Agreement, pursuant to which the Company increased the principal amount under the Loan Agreement to $26.5 million. Under the amendment to the Loan Agreement, the date on which the Company is required to begin repaying the aggregate principal balance under the Loan Agreement was extended to March 31, 2013, at which point the Company must begin to repay such balance in 30 equal monthly installments. The Company accounted for this amendment as a loan modification in accordance with ASC 470-50, Debt – Modifications and Extinguishments. Per annum interest is payable at the greater of 11.9% and an amount equal to 11.9% plus the prime rate of interest minus 4.75%, provided however, that the per annum interest shall not exceed 15.0%. The Company must make interest payments on the loan each month following the date of borrowing under the Loan Agreement. The unpaid principal balance and all accrued but unpaid interest will be due and payable on September 1, 2015. The loan is secured by a lien on all of the Company’s personal property as of, or acquired after, the date of the new loan agreement, except for intellectual property.

The Loan Agreement requires a deferred charge of $1.25 million to be paid in May 2012 related to the termination of a prior loan agreement. This amount is included in current liabilities at March 31, 2012. The loan also includes an additional deferred charge of $1.24 million due in June 2014 which has been recorded as a loan discount and is being amortized to interest expense over the term of the Loan Agreement using the effective interest rate method. The Company recorded a long-term liability for the full amount of the charge since the payment of such amount is not contingent on any future event. The Company incurred approximately $193,000 in

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loan issuance costs related to the Loan Agreement paid directly to the lenders, which were offset against the loan proceeds as a loan discount. As part of the Loan Agreement, the Company issued warrants to the lenders on June 2, 2010 to purchase up to 156,641 shares of the Company’s common stock at an exercise price equal to $7.98 per share. The Company recorded the relative fair value of the warrants of approximately $780,000 as equity and as a discount to the related loan outstanding and is amortizing the value of the discount to interest expense over the term of the loan using the effective interest method. The relative fair value of the warrant was calculated using the Black-Scholes option-pricing model with the following assumptions: volatility of 64.12%, an expected term equal to the contractual life of the warrant (seven years), a risk-free interest rate of 2.81% and no dividend yield. The resulting effective interest rate approximates 13.1%.

The Loan Agreement defines events of default, including the occurrence of an event that results in a material adverse effect upon the Company’s business operations, properties, assets or condition (financial or otherwise), its ability to perform its obligations under and in accordance with the terms of the Loan Agreement, or upon the ability of the lenders to enforce any of their rights or remedies with respect to such obligations, or upon the collateral under the Loan Agreement or upon the liens of the lenders on such collateral or upon the priority of such liens. Hercules Technology Growth also received an option, subject to the Company’s written consent, not to be unreasonably withheld, to purchase, either with cash or through conversion of outstanding principal under the loan, up to $2.0 million of equity of the Company sold in any sale by the Company to third parties of equity securities resulting in at least $10.0 million in net cash proceeds to the Company, subject to certain exceptions. The Company has evaluated the embedded conversion option, and has concluded that it does not need to be bifurcated and separately accounted for. No amount will be recognized for the conversion feature until such time as the conversion feature is exercised and it can be determined whether a beneficial conversion feature exists. As of March 31, 2012, there have been no events of default under the loan. As of March 31, 2012, the principal balance outstanding was $26.5 million.

Future minimum payments, including interest, under the loan as of March 31, 2012 are as follows (amounts in thousands):

(7) Stock-based Compensation

Stock Plans

The Company issued stock options and restricted stock awards during the three months ended March 31, 2012 and 2011.

A summary of the status of the Company’s stock option activity at March 31, 2012 and changes during the three months then ended is presented in the table and narrative below:

The aggregate intrinsic value in the table above represents the value (the difference between the Company’s closing common stock price on the last trading day of the three months ended March 31, 2012 and the exercise price of the options, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on

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March 31, 2012. As of March 31, 2012, there was $13.3 million of total unrecognized stock-based compensation expense related to stock options granted under the Company’s 2002 Stock Incentive Plan and 2010 Stock Incentive Plan (the “plans”). The expense is expected to be recognized over a weighted-average period of 3.0 years.

Stock-based awards to employees are required to be measured at fair value. The Company uses the Black-Scholes pricing model in order to calculate the estimated fair value of its stock option grants. This model requires the Company to make assumptions with respect to factors such as volatility, interest rate, dividend yield and term. Since the Company completed its initial public offering in March 2010, it has not had sufficient history as a publicly traded company to support a calculation of expected term and volatility. As such, the Company has used a weighted-average volatility considering the Company’s own volatility since March 2010, and the volatilities of several peer companies. For purposes of identifying similar entities, the Company considered characteristics such as industry, length of trading history, market capitalization and similar product pipelines. The Company utilized a weighted average method of using its own historical volatility data for the quarters that it has been public, along with data it obtained from its peer companies. Due to the lack of available quarterly data, the Company elected to use the “simplified” method for “plain vanilla” options to estimate the expected term of the stock option grants. Under this approach, the weighted-average expected life is presumed to be the average of the vesting term and the contractual term of the option. Additionally, under the provisions of ASC 718, the Company is required to include an estimate of the value of the awards that will be forfeited in calculating compensation costs, which the Company estimates based upon actual historical forfeitures. The forfeiture estimates are recognized over the requisite service period of the awards on a straight-line basis. The risk-free interest rate is determined based upon the United States Treasury’s rates for U.S. Treasury zero-coupon bonds with maturities similar to those of the expected term of the options being valued. The Company does not expect to pay dividends in the foreseeable future.

During the three months ended March 31, 2012 and 2011, respectively, the assumptions used in the Black-Scholes pricing model for new grants were as follows:

The restricted stock activity for the three months ended March 31, 2012 is as follows:

As of March 31, 2012, there was $2.3 million of total unrecognized stock-based compensation expense related to restricted stock awards granted under the plans. The expense is expected to be recognized over a weighted-average period of 1.3 years.

(8) Income Taxes

The Company accounts for income taxes under the provisions of ASC 740. The Company has not recorded a federal or state income tax provision or benefit for the three months ended March 31, 2012 and 2011. Although the Company was profitable for the three months ended March 31, 2011, the Company did not have any federal or state income tax expense as it was able to utilize net operating loss carryforwards (NOLs) to fully offset taxable income in all filing jurisdictions. As such, the Company did not record an income tax provision for the three months ended March 31, 2011.

(9) Subsequent Events

On May 9, 2012, the Company entered into a Lease Agreement (the “Lease Agreement”), with BMR-650 E KENDALL B LLC (“Lessor”) pursuant to which the Company has agreed to lease approximately 126,000 square feet of property to be used for office, research and laboratory space (the “Leased Property”) located at 650 East Kendall Street, Cambridge, Massachusetts. The term of the Lease Agreement commences on the earlier of May 31, 2012 or the date that contractually-specified building modifications are complete to allow for the Company to occupy the Leased Property (the “Commencement Date”) and expires approximately twelve years and seven months from the Commencement Date. The Company has the option to extend the term for two additional five-year periods upon the Company’s written notice to the Lessor at least 12 months in advance of the extension.

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The total cash obligation for the base rent over the 12 year and seven month term of the Lease Agreement is approximately $92 million. In addition to the base rent, the Company is also responsible for its share of operating expenses and real estate taxes, in accordance with the terms of the Lease Agreement. The Company will provide a security deposit in the amount of $2,862,726 to the Lessor. The Lessor has agreed to pay up to $18,909,750 for certain upgrades and repairs to be made to the Leased Property.

If the Company is considered in default under the terms of the Lease Agreement (a “Default”) and fails to cure such Default in the applicable time period prescribed under the Lease Agreement, the Lessor may terminate the Lease Agreement and the Company will be required to pay the difference between the remaining rent payments through the expiration of the Lease Agreement and any rental income from reletting the Leased Property over such time period, after deducting any expenses incurred in connection with such reletting. Circumstances which may be considered a Default under the Lease Agreement include the failure to timely pay any rent obligations and the filing by the Company of a petition for liquidation or reorganization under bankruptcy law.

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Forward-Looking Information

The following discussion of our financial condition and results of operations should be read with our unaudited condensed consolidated financial statements and notes included in Part I. Item 1 of this Quarterly Report on Form 10-Q for the three months ended March 31, 2012, as well as the audited consolidated financial statements and notes and 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, 2011, filed with the Securities and Exchange Commission, or SEC, on March 30, 2012. This Management’s Discussion and Analysis of Financial Condition and Results of Operations contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on current expectations, estimates, forecasts, and projections and the beliefs and assumptions of our management and include, without limitation, statements with respect to our expectations regarding our research, development and commercialization plans and prospects, results of operations, general and administrative expenses, research and development expenses, and the sufficiency of our cash for future operations. Words such as “anticipate,” “target,” “project,” “believe,” “goals,” “estimate,” “potential,” “predict,” “may,” “will,” “expect,” “might,” “could,” “intend,” variations of these terms or the negative of those terms and similar expressions are intended to identify these forward-looking statements. Readers are cautioned that these forward-looking statements are predictions and are subject to risks, uncertainties, and assumptions that are difficult to predict. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. Among the important factors that could cause actual results to differ materially from those indicated by our forward-looking statements are those discussed under the heading “Risk Factors” in Item 1A of Part II and elsewhere in this report.

Overview

We are a cancer therapeutics company, which does business as AVEO Oncology, committed to discovering, developing and commercializing targeted cancer therapies to impact patients’ lives. Our product candidates are directed against important mechanisms, or targets, known or believed to be involved in cancer. Our proprietary Human Response Platform™, a novel method of building preclinical models of human cancer, provides us with unique insights into cancer biology and is being leveraged in the discovery and clinical development of our cancer therapeutics.

Tivozanib, our lead product candidate, the development of which is part of our 2011 partnership with Astellas Pharma Inc., or Astellas, is a potent, selective, long half-life inhibitor of all three vascular endothelial growth factor, or VEGF, receptors that is designed to optimize VEGF blockade while minimizing off-target toxicities. Our clinical trials of tivozanib to date have demonstrated a favorable safety and efficacy profile for tivozanib. In January 2012, we announced top-line data from our global, phase 3 clinical trial comparing the efficacy and safety of tivozanib with Nexavar^® (sorafenib), an approved therapy, for first-line treatment in advanced renal cell carcinoma, or RCC, which we refer to as the TIVO-1 study. The TIVO-1 study is being conducted in patients with advanced clear cell RCC who have undergone a prior nephrectomy (kidney removal) and who have not received any prior VEGF- and mTOR-targeted therapy. In this trial, we measured, among other things, each patient’s progression-free survival, or PFS, which refers to the period of time that began when a patient entered the clinical trial and ended when either the patient died or the patient’s cancer had grown by a specified percentage or spread to a new location in the body. PFS is the primary endpoint in the TIVO-1 study. In the TIVO-1 study, tivozanib demonstrated a statistically significant improvement in PFS over Nexavar with a median PFS of 11.9 months for tivozanib compared to a median PFS of 9.1 months for Nexavar in the overall study population. Tivozanib also demonstrated a statistically significant improvement in PFS with a median PFS of 12.7 months compared to a median PFS of 9.1 months for Nexavar in the pre-specified subpopulation of patients who received no prior systemic anti-cancer therapy for metastatic disease—a subpopulation that comprised approximately 70% of the total study population. In the TIVO-1 study, tivozanib demonstrated a well-tolerated safety profile consistent with the results from our tivozanib phase 2 clinical trial in patients with advanced RCC; the most commonly reported side effect was hypertension, a well established on-target and manageable effect of VEGF receptor inhibitors. The most common treatment-related side effects seen in the phase 2 clinical trial were hypertension (44.9%) and dysphonia, or hoarseness of voice (21.7%). Additionally, the incidence of other side effects in the phase 2 clinical trial that are commonly associated with other VEGF receptor inhibitors, such as diarrhea, rash, mucositis, stomatitis, fatigue, and hand-foot syndrome, was relatively low.

In addition to the TIVO-1 study, we are evaluating tivozanib in multiple phase 1 and phase 2 clinical trials including our BATON (Biomarker Assessment of Tivozanib in ONcology) program, a series of clinical trials assessing tivozanib biomarkers in solid tumors. The BATON trials include BATON-RCC, a phase 2 exploratory biomarker study evaluating first-line treatment with tivozanib in patients with advanced RCC, which completed enrollment in early 2012. The second BATON study underway is BATON-CRC, a phase 2 clinical trial evaluating tivozanib in combination with modified FOLFOX6 (mFOLFOX6) compared to Avastin^® (bevacizumab) in combination with mFOLFOX6 as first-line therapy in patients with advanced metastatic colorectal cancer, or CRC. Additionally, we expect to initiate further clinical evaluation of tivozanib in breast cancer in 2012 as part of our BATON program.

We expect that the results of all of our phase 1 and phase 2 trials will help to inform our clinical development plans for tivozanib as a monotherapy and in combination with other anti-cancer therapies in multiple cancer indications.

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We acquired exclusive rights to develop and commercialize tivozanib worldwide outside of Asia pursuant to a license agreement we entered into with Kirin Brewery Co. Ltd. (now Kyowa Hakko Kirin), or KHK, in 2006. Under the license agreement, we obtained an exclusive license to research, develop, manufacture and commercialize tivozanib, pharmaceutical compositions thereof and associated biomarkers for the diagnosis, prevention and treatment of any and all human diseases and conditions outside of Asia. KHK has retained all rights to tivozanib in Asia. We have obligations to make milestone and royalty payments to KHK. The royalty rates range from the low to mid-teens as a percentage of our net sales of tivozanib. We are also obligated to pay a specified percentage of certain amounts we receive from any third party sublicensees, including Astellas. As discussed below under the heading “Strategic Partnerships,” we entered into a strategic collaboration with Astellas in which we have agreed to share responsibility, including all profits and losses, with Astellas for continued development and commercialization of tivozanib in North America and Europe. Throughout the rest of the world, outside of North America, Europe and Asia, we granted Astellas an exclusive, royalty-bearing license to develop and commercialize tivozanib.

In addition to tivozanib, we have a pipeline of monoclonal antibodies derived from our proprietary Human Response Platform. Ficlatuzumab, our next most advanced product candidate, is an antibody which binds to hepatocyte growth factor, or HGF, thereby blocking its function. We have completed two phase 1 clinical trials of ficlatuzumab demonstrating the ability to combine ficlatuzumab with epidermal growth factor receptor, or EGFR, inhibitors Tarceva^® (erlotinib) and Iressa^® (gefitinib). We recently announced preliminary data from our phase 2 study comparing the combination of ficlatuzumab and gefitinib to gefitinib monotherapy in previously untreated Asian subjects with non-small cell lung cancer, a population with a high prevalence of EGFR sensitizing mutations. Preliminary results in the intent-to-treat population showed a trend favoring the ficlatuzumab/gefitinib combination. However, study results did not reach statistical significance. Encouraging signals of activity were observed in unique subsets of patients based on EGFR mutation status and c-Met expression levels.

We have also identified a number of other promising targets for the development of novel cancer therapeutics using our Human Response Platform. We have preclinical and discovery antibody programs underway focused on targets that appear to be important drivers of tumor growth, including our third clinical candidate AV-203, which targets the ErbB3 receptor (partnered with Biogen Idec, Inc., or Biogen Idec), our monoclonal antagonist of the Recepteur d’Origine Nantais (partnered with Centocor Ortho Biotech Inc., or Centocor), as well as programs directed towards the Notch receptors and Fibroblast Growth Factor receptors.

Our proprietary Human Response Platform was designed to overcome many of the limitations of traditional approaches to modeling human cancer. The traditional method of modeling human cancer uses a model referred to as a xenograft. A xenograft model is created by adapting cells from a human tumor to grow in a petri dish, and then injecting these cells in a mouse, where they grow into tumors. However, the resulting tumors differ from the original tumor in important respects, and, accordingly, xenograft models are often poor predictors of the success of cancer drugs in human clinical trials. In our Human Response Platform, we use patented genetic engineering techniques to grow populations of spontaneous tumors in animals containing human-relevant, cancer-causing mutations and tumor variation akin to what is seen in populations of human tumors. Because we believe that these populations of tumors better replicate what is seen in human cancer, we believe that our Human Response Platform provides us with unique insights into cancer biology and mechanisms of drug response and resistance, and represents a significant improvement over traditional approaches. We are utilizing this Human Response Platform alone and with our strategic partners to (i) identify and validate target genes which drive tumor growth, (ii) evaluate drugs which can block the function of these targets and (iii) identify biomarkers, which are indicators of drug response and resistance in patients, in an effort to evaluate which patients are most likely to respond favorably to treatment with such drugs. The potential identification and development of relevant biomarkers through our Human Response Platform is a core component of our oncology drug development efforts. Our goal is to utilize the biomarker data from BATON-CRC and other BATON clinical trials to further inform our clinical development strategy.

We have devoted substantially all of our resources to our drug discovery efforts comprising research and development, conducting clinical trials for our product candidates, protecting our intellectual property and supporting the general and administrative functions of these operations. We have generated no revenue from product sales through March 31, 2012, and have principally funded our operations through:

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We do not have a history of being profitable and, as of March 31, 2012, we had an accumulated deficit of $239.1 million. We anticipate that we will continue to incur significant operating costs over the next several years as we advance our plan to expand our discovery, research, development and commercialization activities, including additional clinical development and planned commercialization of our lead product candidate, tivozanib, the continued clinical development of our phase 2 product candidate, ficlatuzumab, as well as anticipated clinical trials for AV-203. We will need additional financing to support our operating activities.

Strategic Partnerships

Kyowa Hakko Kirin

In December 2006, we entered into a license agreement with KHK under which we obtained an exclusive license, with the right to grant sublicenses subject to certain restrictions, to research, develop, manufacture and commercialize tivozanib, pharmaceutical compositions thereof and associated biomarkers. Our exclusive license covers all territories in the world, except for Asia. KHK has retained rights to tivozanib in Asia. Under the license agreement, we obtained exclusive rights in our territory under certain KHK patents, patent applications and know-how related to tivozanib, to research, develop, make, have made, use, import, offer for sale, and sell tivozanib for the diagnosis, prevention and treatment of any and all human diseases and conditions. Upon entering into the license agreement with KHK, we made a one-time cash payment in the amount of $5.0 million.

Under our license agreement with KHK, we may be required to

In March 2010, we made a $10.0 million milestone payment to KHK in connection with the dosing of the first patient in our phase 3 clinical trial of tivozanib.

We also recorded $22.5 million of research and development expense during the three months ended March 31, 2011 associated with the payment made to KHK related to the up-front license payment received under the collaboration and license agreement with Astellas which we entered into in February 2011.

Astellas Pharma

In February 2011, we entered into a collaboration and license agreement with Astellas and certain of its indirect wholly-owned subsidiaries in connection with which we and Astellas will develop and commercialize tivozanib for the treatment of a broad range of cancers, including RCC, and breast and colorectal cancers. Under the terms of the collaboration agreement, we and Astellas will share responsibility for continued development and commercialization of tivozanib in the United States, Mexico and Canada, or North America, and in Europe under the joint development plan and joint commercialization plan, respectively. Throughout the rest of the world (which excludes North America, Europe and Asia), which we refer to as the royalty territory, Astellas has an exclusive, royalty-bearing license to develop and commercialize tivozanib. Our plan to commercialize tivozanib in collaboration with Astellas, as described herein, is subject to our and Astellas’s receipt of necessary regulatory approvals from the Food and Drug Administration, or FDA, and foreign regulatory authorities based upon favorable results in clinical trials. There can be no assurance that such approvals will be obtained.

Assuming successful approvals of tivozanib by applicable regulatory agencies, we will hold all marketing authorizations in North America, including any new drug application in the United States, and Astellas will hold all marketing authorizations in the rest of the world, other than Asia.

Assuming successful approvals of tivozanib by applicable regulatory agencies, we, as the lead commercialization party in North America, will have lead responsibility for formulating the commercialization strategy for North America under the joint commercialization plan, with each of us and Astellas responsible for conducting fifty percent (50%) of the sales efforts and medical

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affairs activities in North America. Astellas will have lead responsibility for commercialization activities in Europe under the joint commercialization plan, and we will be responsible for conducting fifty percent (50%) of the medical affairs activities in the major European countries. All costs associated with each party’s conduct of development and commercialization activities (including clinical manufacturing and commercial manufacturing costs, if any) in North America (including any regulatory milestones and royalties associated with tivozanib in North America which may become payable by us to KHK under our license agreement with KHK), and any resulting profits or losses, will be shared equally between the parties. All costs associated with each party’s conduct of development and commercialization activities (including clinical manufacturing and commercial manufacturing costs, if any) in Europe, and any resulting profits or losses, will be shared equally between the parties. As between the parties, we will remain responsible for complying with our sublicense revenue sharing obligations, if any, to KHK under our license agreement with KHK in connection with the development and commercialization of tivozanib outside of North America.

We are responsible for manufacturing, through our third party manufacturer, all of Astellas’s requirements for tivozanib pursuant to a clinical supply agreement which we have entered into with Astellas, and a commercial supply agreement which the parties are currently negotiating.

Each party is obligated to use commercially reasonable efforts to develop and commercialize tivozanib in each of the United States, Mexico and Canada, and to develop and commercialize tivozanib in each European country specified in the agreement. Astellas is also obligated to use commercially reasonable efforts to develop and commercialize tivozanib in each country in the royalty territory.

During the term of the agreement, neither party nor its controlled affiliates may commercialize anywhere in North America, Europe or the royalty territory any product that has a specified mechanism of action (as further defined in the collaboration agreement) for any oncology indication, except that Astellas may commercialize specified compounds for hematological cancer. Astellas may also commercialize products (other than tivozanib) in the royalty territory, on a country-by-country basis, upon expiration of the applicable royalty term, and in North America and Europe upon expiration of all valid claims under the licensed patents.

In connection with the agreement, we received an initial cash payment of $125 million, comprised of a $75 million license fee and $50 million in research and development funding, both of which are non-creditable and non-refundable against any amounts due under the collaboration agreement. We retained net proceeds of approximately $97.6 million of the initial cash payment from Astellas, after payments to KHK and strategic, legal and financial advisors. We are also eligible to receive an aggregate of approximately $1.3 billion in potential milestone payments, comprised of (i) up to $85 million in substantive milestone payments upon achievement of specified clinical and development milestone events, (ii) up to $490 million in substantive milestone payments upon achievement of specified regulatory milestone events, including up to $90 million in milestone payments in connection with specified regulatory filings, and receipt of marketing approvals, for tivozanib to treat RCC in the United States and Europe, and (iii) up to $780 million in milestone payments upon the achievement of specified commercial sales events. The first anticipated clinical and development milestone is due to us upon initiation of our next phase 3 clinical trial. The timing of this milestone is uncertain, as we have not finalized plans for our future trials. We have elected to recognize all milestone payments as revenue once the milestones have been triggered if the milestone is deemed to be substantive. Significant potential near-term regulatory milestones include acceptance by the FDA of the first filing of an NDA for RCC (monotherapy) ($15 million) and acceptance by the European Medicines Agency, or EMA of the first filing of a Marketing Authorization Application ($15 million). In addition, if tivozanib is successfully developed and launched in the royalty territory, Astellas will be required to pay to us tiered, double digit royalties on net sales of tivozanib in the royalty territory, if any, subject to offsets under certain circumstances. We are required to pay KHK low to mid-teen royalties on our net sales in North America, and 30% of certain amounts we may receive from Astellas in connection with Astellas’ development and commercialization activities in Europe and the royalty territory, including up-front license fees, milestone payments and royalties.

Unless terminated earlier in accordance with its terms, the collaboration agreement with Astellas expires (a) with respect to the royalty territory, on a country by-country basis, upon the latest to occur of: (i) the expiration of the last-to-expire valid claim of an AVEO patent or joint patent covering the composition of tivozanib, (ii) the expiration of the last-to-expire valid claim of an AVEO patent or joint patent covering the use of tivozanib, but only for so long as no generic competition exists in such country, and (iii) twelve years from first commercial sale of tivozanib in such country, and (b) with respect to North America and Europe as a whole, upon the expiration of all payment obligations between the parties related to development and commercialization of tivozanib in North America and Europe. After the second anniversary of the effective date of the collaboration agreement, Astellas has the right to terminate the collaboration agreement, in its entirety or solely with respect to the royalty territory, at any time upon 180 days prior written notice to us. Either party may terminate the collaboration agreement with respect to a specified territory or country as set forth in the collaboration agreement, if the other party fails to cure a material breach related to such territory or country, as applicable. We may also terminate the collaboration agreement in its entirety upon a patent-related challenge by Astellas, its affiliates or sublicensees, if such patent-related challenge is not withdrawn within 30 days following our notice to Astellas of such termination.

We are accounting for the joint development and commercialization activities in North America and Europe as a joint risk sharing collaboration in accordance with Accounting Standards Codification, or ASC, 808 Collaborative Arrangements. In addition, these activities were not deemed to be separate deliverables under the agreement with Astellas.

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Payments from Astellas with respect to Astellas’ share of research and development costs incurred by us are recorded as a reduction to expense due to the joint risk sharing provisions of the agreement in North America and Europe. As a result of the cost-sharing provisions in our agreement with Astellas, we reduced research and development expense by $8.0 million and $6.2 million during the three months ended March 31, 2012 and 2011, respectively, and general and administrative expense by $0.6 and $0.2 million during the three months ended March 31, 2012 and 2011, respectively. The net amount due to us from Astellas pursuant to the cost-sharing provisions is $8.6 million at March 31, 2012.

Activities under the agreement with Astellas outside of the joint development and commercialization activities in North America and Europe were evaluated under ASC 605-25 Revenue Recognition – Multiple Element Arrangements, or ASC 605-25, to determine if they represented a multiple element revenue arrangement. The agreement with Astellas includes the following deliverables outside of the joint development and commercialization activities in North America and Europe: a co-exclusive license to develop and commercialize tivozanib in North America and Europe, a royalty-bearing license to develop and commercialize tivozanib in the royalty-bearing territory, which includes our obligation to provide access to clinical and regulatory information resulting from the activities in North America and Europe to Astellas for its development and commercialization of tivozanib in the royalty-bearing territory, and our obligation to supply clinical material to Astellas for development of tivozanib in the royalty-bearing territory. The co-exclusive license in North America and Europe is not sublicensable. Astellas has the right to sublicense the exclusive royalty-bearing license to develop tivozanib in the royalty-bearing territory. Our obligation to provide access to clinical and regulatory information as part of the royalty territory deliverable includes the obligation to provide access, upon request, to all clinical data, regulatory filings, safety data and manufacturing data to Astellas for use in the development of tivozanib in the royalty-bearing territory. The obligation to supply clinical material to Astellas for development in the royalty-bearing territory includes supplying such clinical material in accordance with current good manufacturing practices applicable to clinical materials and other relevant regulatory authority requirements, upon request, for the development of tivozanib in the royalty-bearing territory. All of these deliverables were deemed to have stand-alone value and to meet the criteria to be accounted for as separate units of accounting under ASC 605-25. ASC 605-25 establishes a selling price hierarchy for determining the selling price of a deliverable, which includes: (1) vendor-specific objective evidence if available; (2) third-party evidence if vendor-specific objective evidence is not available; and (3) estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. We allocated the up-front consideration of $125 million to the deliverables based on our best estimate of selling price of each deliverable using the relative selling price method as we did not have vendor specific objective evidence or third party evidence for such deliverables. Our best estimate of selling price considered discounted cash flow models, the key assumptions of which included the market opportunity for commercialization of tivozanib in North America and Europe and in the royalty-bearing territory, the development costs and market opportunity for the expansion of tivozanib into other solid tumor types, and the time to commercialization of tivozanib for all potential oncology indications. We allocated $120.2 million of the up-front consideration from Astellas to the co-exclusive license in North America and Europe and $4.8 million of the up-front consideration from Astellas to the combined deliverable representing a royalty-bearing license to develop and commercialize tivozanib in the royalty-bearing territory along with our obligation to provide access to clinical and regulatory information resulting from the activities in North America and Europe to Astellas for its use in the royalty-bearing territory. The relative selling price for our obligation to supply clinical material to Astellas for development in the royalty-bearing territory had de minimus value.

We recorded the $120.2 million relative selling price of the co-exclusive license granted in North America and Europe as collaboration revenue during the three months ended March 31, 2011 upon delivery of the license, and deferred approximately $4.8 million of revenue representing the relative selling price of the royalty-bearing license to develop and commercialize tivozanib in the royalty-bearing territory along with our obligation to provide access to clinical and regulatory information resulting from the activities in North America and Europe to Astellas for its use in the royalty-bearing territory. We are recording the $4.8 million ratably over our period of performance through April 2022, the remaining patent life of tivozanib. We estimated the period of performance considering that we plan to develop tivozanib with Astellas in several indications outside of RCC, including in breast cancer and colorectal cancer and potentially in other cancer indications. The clinical development of tivozanib in these indications is in earlier stages of development and, as a result, the clinical development timeline is uncertain and is expected to change as we obtain additional clinical data in these indications. As a result, we estimated the period of performance as the remaining patent life of tivozanib as it represents the longest period over which development of tivozanib could occur. We reassess the period of performance at each reporting period. We recorded approximately $107,000 and $54,000 of revenue associated with the royalty territory deliverable during the three months ended March 31, 2012 and 2011, respectively.

Centocor Ortho Biotech

In May 2011, we entered into an exclusive license agreement with Centocor for the worldwide development and commercialization of our internally-discovered antibodies targeting the RON receptor, including the grant to Centocor of an exclusive, worldwide license to our proprietary RON-driven tumor models. We also granted Centocor a nonexclusive, non-sublicensable, worldwide license to our proprietary list of human genes intended to predict correlation of response to RON-targeted antibodies, or our RON index. Centocor is responsible for all clinical development, manufacturing and commercialization activities and costs. Subject to an agreed-upon research plan and budget, Centocor will also fund certain research for a three-year term to be conducted by us, including translational research studies using our proprietary Human Response Platform to identify biomarkers for patients most likely to benefit from treatment with RON targeted antibodies.

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In connection with the Centocor license agreement, we received a one-time cash payment in the amount of $7.5 million and a separate equity investment in the amount of approximately $7.5 million through the purchase by Johnson & Johnson Development Corporation, an affiliate of Centocor, of 438,340 newly issued shares of our common stock at a purchase price of $17.11 per share. Centocor also agreed to fund certain research and development activities. Milestone payments for the successful development and commercialization of a RON-targeted antibody, if all approvals in multiple indications and all sales milestones are achieved, could total, in the aggregate, $540 million, comprised of (i) up to $40 million in substantive milestone payments upon achievement of specified clinical and development milestone events, (ii) up to $165 million in substantive milestone payments upon achievement of specified regulatory milestone events in connection with specified regulatory filings, and receipt of marketing approvals, and (iii) up to $335 million in milestone payments upon the achievement of specified sales events. We could earn the first clinical and development milestone of $2.0 million under the Centocor license agreement upon the selection of a lead antibody for entry into pre-clinical studies, with respect to the first licensed product under the agreement. We expect to achieve this milestone during the year ending December 31, 2012. Upon commercialization, we are eligible to receive tiered double-digit royalty payments on Centocor’s net sales of any RON-targeted antibody, as a percentage of net sales. Centocor’s royalty obligations in a particular country begin on the date of first commercial sale of a product in that country, and end on the later of 10 years after the date of first commercial sale of the product in that country or the date of the last to expire of the issued patents covering the product in that country. All milestone payments and royalties will be reduced by a specified percentage if Centocor develops or commercializes a RON-targeted antibody which has incorporated significant, meaningful improvements made after a specified period by Centocor to the antibodies delivered by us. The royalties will also be reduced by a specified percentage on a country-by-country basis upon the entry of a generic competitor.

The Centocor license agreement will remain in effect until the expiration of all of Centocor’s royalty obligations to us, determined on a product-by-product and country-by-country basis. Prior to the filing of an investigational new drug application with the FDA, or a similar application filed with another regulatory authority outside of the United States (which we refer to as IND submission), Centocor has the right to terminate the Centocor license agreement at will upon 90 days written notice to us. After IND submission, Centocor may terminate the Centocor license agreement at will upon 180 days written notice to us. Either party has the right to terminate the Centocor license agreement in connection with an insolvency event involving the other party or a material breach of the Centocor license agreement by the other party that remains uncured for a specified cure period. In the event that Centocor terminates the Centocor license agreement at will, or if we terminate the Centocor license agreement due to Centocor’s material breach or insolvency, worldwide rights to the development, manufacture, and commercialization of RON-targeted antibodies revert back to us.

As noted above, Johnson & Johnson Development Corporation paid $7.5 million for 438,340 shares of our common stock at a purchase price of $17.11 per share, which reflected the average of the daily volume weighted average prices for our common stock for the 30 consecutive trading days ending on May 26, 2011. This weighted average sales price of $17.11 per share resulted in a $1.22 per share discount from the May 31, 2011 closing price of $18.33 per share, or a discount of $534,775 from the fair market value of the common stock on the effective date of the Centocor license agreement. We determined this transaction was not within the scope of ASC 605-25 and, accordingly, we recorded the sale of common stock to Johnson & Johnson Development Corporation at fair value based on the closing price of our stock on May 31, 2011 of $18.33 per share.

The remaining activities under the Centocor license agreement were evaluated under ASC 605-25 to determine if they represented a multiple element revenue arrangement. We determined that the Centocor license agreement included the following deliverables:

We determined that each deliverable had stand-alone value upon delivery and therefore represents a separate unit of accounting. Factors considered in this determination included, among other things, the subject of the licenses and the research and development and commercial capabilities of Centocor.

We excluded the fair value of the common stock purchased by Johnson & Johnson Development Corporation from the arrangement consideration to be allocated to the identified deliverables and allocated the remaining $7.0 million of up-front consideration attributable to the deliverables based on the relative selling price method. We determined the estimated selling price for the license related to the RON antibodies and the license to the RON index based on management’s best estimate of selling price as we did not have vendor-specific objective evidence or third-party evidence of selling price for those deliverables. In determining our best estimate of selling price for the RON license and the RON Index license, we considered market conditions as well as entity-specific factors, including those factors contemplated in negotiating the Centocor license agreement and internally developed revenue models. Our best estimate of selling price for the license related to the RON antibodies and license to the RON index considered discounted cash flow models, the key assumptions of which included the market opportunity for commercialization of a potential

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product candidate using the RON receptor worldwide, an estimate of costs related to phase 1, 2 and 3 clinical studies with certain multiplication factors related to the probability of success, and the time to commercialization of a potential product candidate. This analysis used various assumptions that are typical for similarly staged monoclonal antibodies and other cost assumptions we believed to be reasonable in determining research and development, and sales, general and administrative costs. More specifically, our estimate of peak revenues was consistent with what might be expected from an approved antibody product. Other key assumptions included: cost of goods sold, which was assumed to be a specified percentage of revenues based on estimated cost of goods sold of a typical oncology antibody product; clinical trial costs, which were based on estimated clinical costs for a single phase 1 safety study, followed by phase 2 and 3 studies for a single oncology indication; and sales and marketing costs, which were based on the costs required to field an oncology sales force and marketing group, including external costs required to promote an oncology product. The factors used to estimate the probability of success and the time to commercialization of a product candidate were based on standard industry averages for antibodies being developed for oncology indications. The results of our analysis indicated an estimated selling price for the licenses of approximately $39 million. The analysis used a weighted average cost of capital of 15% derived from returns on equity for comparable companies.

With respect to the research services, we considered the nature of the research services to be provided (basic translational research related to a pre-clinical, antibody-based technology) and the fact that other vendors could provide the research services. As a result, we concluded that third party evidence of selling price exists for the research services deliverable. In supporting third party evidence of selling price, we considered the nature of the research services, the rates charged by vendors in the marketplace for similar services and rates charged by us for other non-complex, pre-clinical research services in our other license and development agreements.

As the relative selling price of the license related to the RON antibodies and license to the RON index (the delivered items) exceeds the up-front consideration attributable to the deliverables of $7.0 million, the entire up-front payment was recognized as revenue upon delivery of the licenses during the quarter ended June 30, 2011. We concluded that a change in the assumptions used to determine estimated selling price for the units of accounting would not have a significant effect on the allocation of arrangement consideration.

We will record revenue related to research and development services as the services are delivered at the contractual rate, which approximates fair value for those services.

We may be entitled to receive future milestone payments totaling $540 million. We have elected to recognize all milestone payments as revenue once the milestones have been triggered if the milestone is deemed to be substantive. We believe the clinical and development, and regulatory milestones that may be received under the Centocor license agreement are consistent with the definition of a milestone included in ASU 2010-17, Revenue Recognition – Milestone Method, or ASU 2010-17, and, accordingly, we will recognize payments related to the achievement of such milestones, if any, as revenue when such milestone is achieved. Factors considered in this determination included scientific and regulatory risks that must be overcome to achieve each milestone, the level of effort and investment required to achieve each milestone, and the monetary value attributed to each milestone.

We did not recognize any milestone payments under this arrangement during the three months ended March 31, 2012 and 2011.

OSI Pharmaceuticals

In September 2007, we entered into a collaboration and license agreement with OSI Pharmaceuticals, Inc., (a wholly-owned subsidiary of Astellas US Holding Inc., a holding company owned by Astellas Pharma Inc.) or OSI. This strategic partnership is primarily focused on the identification and validation of genes and targets involved in the processes of epithelial-mesenchymal transition or mesenchymal-epithelial transition, in cancer. The research program portion of our strategic partnership with OSI, which concluded in June 2011, focused on the development of proprietary target-driven tumor models for use in target validation, drug screening and biomarker identification to support OSI’s drug discovery and development activities. In connection with the terms of our agreement, OSI elected to obtain exclusive rights, with the right to grant sublicenses, under certain aspects of our intellectual property, to research, develop, make, sell and import drug products and associated diagnostics directed to 16 targets identified and/or validated under the agreement. OSI has sole responsibility and is required to use commercially reasonable efforts to develop and commercialize drugs and associated diagnostics directed to the targets to which it has obtained rights. In July 2009, we expanded our strategic partnership with OSI and we granted OSI a non-exclusive license to use our proprietary bioinformatics platform, and non-exclusive, perpetual licenses to use bioinformatics data and to use a proprietary gene index related to a specific target pathway. Further, as part of our expanded strategic partnership, we granted OSI an option to receive non-exclusive perpetual rights to certain elements of our Human Response Platform, including the right to obtain certain of our tumor models and tumor archives.

In September 2007, OSI paid us an up-front payment of $7.5 million, which was recorded in deferred revenue and was amortized over our period of substantial involvement, which ended in July 2011. OSI also paid us $2.5 million for the first year of research program funding, which was recorded in deferred revenue and was recognized as revenue over the performance period and, thereafter, made sponsored research payments of $625,000 per quarter through July 2009. In addition, OSI purchased 1,833,334 shares of our series C convertible preferred stock, at a per share price of $3.00, resulting in gross proceeds to us of $5.5 million. We

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determined that the price paid of $3.00 per share by OSI represented a premium of $0.50 over the price per share for shares of our series D convertible preferred stock sold in April 2007; accordingly, we recognized the premium of $917,000 as additional license revenue on a straight-line basis over the period of substantial involvement. In connection with the initial public offering we consummated in March 2010 and the related 1:4 reverse stock split of our common stock, each four shares of outstanding series C convertible preferred stock were converted into one share of common stock.

In July 2009 under the amended agreement, OSI paid us an up-front payment of $5.0 million, which was recorded in deferred revenue and was amortized over our remaining period of substantial involvement, which ended in July 2011. OSI also agreed to fund research costs through June 30, 2011. In addition, OSI purchased 3,750,000 shares of our series E convertible preferred stock at a per share price of $4.00, resulting in gross proceeds to us of $15.0 million. We determined that the price of $4.00 per share paid by OSI represented a premium of $1.04 per share over the fair value of the series E convertible preferred stock of $2.96 as calculated by us in our retrospective stock valuation; accordingly, we recognized the premium of $3.9 million as additional license revenue on a straight-line basis over the period of substantial involvement, which ended in July 2011. In connection with the initial public offering we consummated in March 2010 and the related 1:4 reverse stock split of our common stock, each four shares of outstanding series E convertible preferred stock were converted into one share of common stock.

In November 2010, OSI exercised its option under the July 2009 expansion of the agreement to license certain elements of our proprietary technology platform, including components of the Human Response Platform for the identification/characterization of novel epithelial-mesenchymal transition agents and proprietary patient selection biomarkers, in support of OSI’s clinical development programs. We did not consider the option granted to OSI in July 2009 as a deliverable as there was significant uncertainty that this option would ultimately be exercised. In connection with the exercise of the option, OSI was obligated to pay us $25 million in license expansion fees. We received $12.5 million upon delivery of the notice of option exercise, and we received the remaining $12.5 million in July 2011 in connection with the successful transfer of the applicable technology. We deferred the initial $12.5 million payment, and recognized the full $25 million relating to the option exercise by OSI over the period of substantial involvement, which ended in July 2011.

Under the July 2009 expanded agreement, if all applicable milestones are achieved, payments for the successful achievement of discovery, development and commercialization milestones under the agreement could total, in the aggregate, over $94.0 million for each target and its associated products, comprised of (i) up to $17.6 million in substantive milestone payments upon achievement of specified clinical and development milestone events, (ii) up to $41.3 million in substantive milestone payments upon achievement of specified regulatory milestone events, (iii) up to $35.0 million in milestone payments upon the achievement of specified sales events, and (iv) up to $250,000 in patent related milestones. The first milestone we may receive pursuant to this agreement is either a patent related milestone of $250,000 upon filing of a patent application, or a clinical and development milestone of $750,000 for commencement of GLP toxicology studies. We expect to achieve these milestones during the year ending December 31, 2012.

In March 2011, we earned $1.5 million related to deliverables and research milestones under the agreement. In addition, we are eligible to receive up to $24.0 million in biomarker related milestones. Upon commercialization of products which were part of the research program under the agreement, we are eligible to receive tiered royalty payments on sales of products by OSI, its affiliates and sublicensees. All milestones earned to date are for selection of targets, delivery of models, delivery of tumor archives or delivery of cell lines. These milestones are not considered to be substantive and at risk, therefore, the milestone payments were deferred and were recognized on a straight-line basis over the remaining estimated period of substantial involvement, which ended in July 2011. The next regulatory milestone we may receive pursuant to this agreement is $7.0 million to be achieved for the filing of the NDA with the FDA. We do not expect to achieve this milestone in the year ending December 31, 2012. Upon commercialization of products which were part of the research program under the agreement, we are eligible to receive tiered royalty payments on sales of products by OSI, its affiliates and sublicensees. All milestones earned to date are for selection of targets, delivery of models or delivery of cell lines.

Biogen Idec

In March 2009, we entered into an exclusive option and license agreement with Biogen Idec International GmbH, a subsidiary of Biogen Idec Inc., which we collectively refer to herein as Biogen Idec, regarding the development and commercialization of our discovery-stage ErbB3-targeted antibodies for the potential treatment and diagnosis of cancer and other diseases outside of the United States, Canada and Mexico. Under the agreement, we are responsible for developing ErbB3 antibodies through completion of the first phase 2 clinical trial designed in a manner that, if successful, will generate data sufficient to support advancement to a phase 3 clinical trial. Within a specified time period after we complete this phase 2 clinical trial and deliver to Biogen Idec a detailed data package containing the results thereof, Biogen Idec may elect to obtain (1) a co-exclusive (with us), worldwide license, including the right to grant sublicenses, under our relevant intellectual property to develop and manufacture ErbB3 antibody products, and (2) an exclusive license, including the right to grant sublicenses, under our relevant intellectual property, to commercialize ErbB3 antibody products in all countries in the world other than the United States, Canada and Mexico. We retain the exclusive right to commercialize ErbB3 antibody products in the United States, Canada and Mexico.

We account for the Biogen Idec arrangement pursuant to ASC 605-25. The deliverables under the arrangement include an option for a co-exclusive, world-wide license to develop and manufacture ErbB3 antibody products and an option for an exclusive

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license to commercialize ErbB3 antibody products in all countries in the world other than the United States, Canada and Mexico. We determined that these deliverables did not have standalone value due to the fact that the program was still in preclinical development and required our experience to advance development of the product. As such, we determined that the agreement should be accounted for as one unit of accounting.

Under the terms of the agreement, Biogen Idec paid us an upfront cash payment of $5.0 million in March 2009, which is being amortized over our period of substantial involvement, defined as the patent life of the development candidate. In addition, Biogen Idec purchased 7,500,000 shares of series E convertible preferred stock at a per share price of $4.00, resulting in gross proceeds to us of $30.0 million. We determined that the price of $4.00 paid by Biogen Idec represented a premium of $1.09 per share over the fair value of the series E convertible preferred stock of $2.91 as calculated by us in our retrospective stock valuation; accordingly, we are recognizing the premium of $8.2 million as revenue on a straight-line basis over the period of substantial involvement. In connection with the initial public offering we consummated in March 2010 and the related 1:4 reverse stock split of our common stock, each four shares of outstanding series E convertible preferred stock were converted into one share of common stock.

In June 2009, we received a $5.0 million milestone payment for achievement of the first pre-clinical discovery milestone under the agreement. Since the $5.0 million milestone payment received in June 2009 was a near term milestone and not considered to be substantive, the revenue is being amortized as additional license revenue over our period of substantial involvement. We also earned a second $5.0 million milestone payment upon selection of a development candidate in March 2010 and a third $5.0 million milestone payment based on achieving the GLP toxicology initiation milestone in June 2011. These milestones were considered substantive and were included in revenue for the quarters ended March 31, 2010 and June 30, 2011, respectively. We could also receive an option exercise fee of $5.0 million and regulatory milestone payments of up to $45.0 million in the aggregate if Biogen Idec exercises its option to obtain exclusive rights to commercialize ErbB3 antibody products in its territory. The first regulatory milestone we may receive pursuant to this agreement of $25.0 million is due upon the receipt of the first regulatory approval of a licensed product from the EMA. We do not expect to achieve this milestone during the year ending December 31, 2012.

Schering-Plough Corporation (now Merck)

In March 2007, we entered into an agreement with Schering-Plough Corporation (now Merck & Co., Inc., or Merck), through its subsidiary Schering Corporation, acting through its Schering-Plough Research Institute division, under which we granted Merck exclusive, worldwide rights to develop and commercialize all of our monoclonal antibody antagonists of hepatocyte growth factor, or HGF, including ficlatuzumab, for therapeutic and prophylactic use in humans and for veterinary use. We also granted Merck an exclusive, worldwide license to related biomarkers for diagnostic use. Merck was responsible for all costs related to the clinical development of ficlatuzumab and clinical and commercial manufacturing.

As of December 27, 2010, the effective date of the termination of our collaboration with Merck relating to ficlatuzumab, we became responsible for all process development and all manufacturing of ficlatuzumab for future development and commercialization.

Under the agreement, Merck paid us an up-front payment of $7.5 million in May 2007, which was being amortized over our period of substantial involvement, which was initially estimated to be through completion of the first phase 2 proof-of-concept trial for ficlatuzumab (which was expected to be the first half of 2012), but was adjusted to reflect the termination of the agreement effective on December 27, 2010. In addition, Merck purchased 4,000,000 shares of our series D convertible preferred stock, at a per share price of $2.50, resulting in gross proceeds to us of $10.0 million. The amount paid for the series D convertible preferred stock represented fair value as it was the same as the amounts paid by unrelated investors in March and April 2007. In connection with the initial public offering which we consummated in March 2010, and the related 1:4 reverse stock split of our common stock, each four shares of outstanding series D convertible preferred stock were converted into one share of common stock.

In June 2010, we earned and received an $8.5 million milestone payment in connection with the enrollment of patients in our phase 2 clinical trial of ficlatuzumab under the agreement. Since the $8.5 million milestone payment earned in June 2010 was considered substantive, it was included in revenue for the year ended December 31, 2010.

In March 2011, in connection with the transition of responsibility for the ficlatuzumab program from Merck back to us, we made a $10.2 million payment to Merck for the purchase of a supply of ficlatuzumab to support ongoing clinical studies. We took title to approximately $1.1 million of this material as of March 31, 2011 and recognized this amount as research and development expense during the three months ended March 31, 2011.

Financial Overview

Revenue

To date, we have not generated any revenue from product sales. All of our revenue to date has been derived from license fees, milestone payments, and research and development payments received from our strategic partners.

In the future, we may generate revenue from a combination of product sales, license fees, milestone payments and research and development payments in connection with strategic partnerships, and royalties resulting from the sales of products developed under licenses of our intellectual property. We expect that any revenue we generate will fluctuate from quarter to quarter as a result of the

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timing and amount of license fees, research and development reimbursements, milestone and other payments received under our strategic partnerships, and the amount and timing of payments that we receive upon the sale of our products, to the extent any are successfully commercialized. We do not expect to generate revenue from product sales until 2013 at the earliest. If we or our strategic partners fail to complete the development of our drug candidates in a timely manner or obtain regulatory approval for them, our ability to generate future revenue, and our results of operations and financial position, would be materially adversely affected.

Research and Development Expenses

Research and development expenses consist of expenses incurred in connection with the discovery and development of our product candidates. These expenses consist primarily of:

We expense research and development costs as incurred. Nonrefundable advance payments for goods and services that will be used in future research and development activities are expensed when the activity has been performed or when the goods have been received rather than when the payment is made.

Research and development expenses are net of amounts reimbursed under our agreement with Astellas for Astellas’ share of development costs incurred by us under our joint development plan with Astellas.

Conducting a significant amount of research and development is 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 complete development of our most advanced product candidate, tivozanib, and to further advance ficlatuzumab and AV-203, as well as our earlier-stage research and development projects.

We track external development expenses and personnel expense on a program-by-program basis and allocate common expenses, such as scientific consultants and lab supplies, to each program based on the personnel resources allocated to such program. Facilities, depreciation, stock-based compensation, research and development management and research and development support services are not allocated and are considered overhead. Below is a summary of our research and development expenses for the three months ended March 31, 2012 and 2011:

Tivozanib

In January 2012, we announced top-line data from our global, phase 3 clinical trial comparing the efficacy and safety of tivozanib with Nexavar, an approved therapy for first-line treatment in advanced RCC, which we refer to as the TIVO-1 study. The TIVO-1 study is being conducted in patients with advanced clear cell RCC who have undergone a prior nephrectomy (kidney removal) and who have not received any prior VEGF-targeted therapy. We are also evaluating tivozanib in multiple phase 1 and phase 2 clinical trials including BATON-RCC, a phase 2 exploratory biomarker study in patients with advanced RCC which completed

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enrollment in early 2012, and BATON-CRC, a phase 2 clinical trial evaluating tivozanib in combination with mFOLFOX6 compared to Avastin in combination with mFOLFOX6 as first-line therapy in patients with advanced metastatic colorectal cancer, or CRC. Future research and development costs for the tivozanib program are uncertain because such costs are dependent on a number of variables, including the cost and design of any additional clinical trials including additional trials in combination with other drugs and the timing of the regulatory process. We entered into a collaboration and license agreement with Astellas in February 2011, pursuant to which we and Astellas share responsibility for tivozanib, including expenses for continued development and commercialization of tivozanib, in North America and Europe. Astellas is responsible for continued development and commercialization of tivozanib outside of North America, Europe and Asia. All costs associated with each party’s conduct of development and commercialization activities in North America and Europe, and any resulting profits or losses, are shared equally between the parties pursuant to a joint development plan. We have included $8.0 million and $6.2 million in research and development cost reimbursements as a reduction in tivozanib related expenses for the three months ended March 31, 2012 and 2011, respectively. Our current estimate for future costs related to our phase 3 clinical program is approximately $23.0 million, excluding the effect of our cost sharing arrangement with Astellas. Upon entering into the license agreement with KHK, we made a cash payment in the amount of $5.0 million to KHK. In the first quarter of 2010, we paid KHK a $10.0 million milestone in connection with the initiation of our phase 3 clinical trial of tivozanib. We may also be required to make up to an aggregate of $50.0 million in milestone payments to KHK upon the achievement of specified regulatory milestones. Further, we are required to pay KHK tiered royalty payments on net sales we make of tivozanib in North America, which range from the low to mid-teens as a percentage of net sales. In connection with the execution of our collaboration agreement with Astellas, we paid KHK 30% of the license fee received from Astellas and are required to pay certain amounts we may receive from Astellas in connection with Astellas’ development and commercialization activities outside of North America and Asia related to tivozanib, other than amounts we receive in respect of research and development funding or equity investments, subject to certain limitations. In the first quarter of 2011, we recorded $22.5 million of expense for amounts owed to KHK related to the up-front license payment received under the collaboration agreement with Astellas.

Ficlatuzumab

In March 2007, we entered into a license agreement related to ficlatuzumab with Merck (formerly Schering-Plough) pursuant to which Merck was responsible for all expenses relating to development of ficlatuzumab in accordance with an agreed-upon budget. We recorded revenue and expenses on a gross basis under this arrangement. We have completed a phase 1 clinical trial of ficlatuzumab and received preliminary data from a phase 2 clinical trial. We earned an $8.5 million milestone payment from Merck upon initiation of the phase 2 clinical trial in the second quarter of 2010. As of December 27, 2010, the date of termination of the collaboration agreement by Merck, we became responsible for the performance and funding of all future research, development, manufacturing and commercialization activities for ficlatuzumab. In connection with the transition of responsibility for the ficlatuzumab program, we purchased supply of ficlatuzumab from Merck for $10.2 million to support ongoing clinical trials of ficlatuzumab. We took title to approximately $1.1 million of this material as of March 31, 2011 and, pursuant to the provisions of ASC Topic 730, recognized this amount as research and development expense during the three months ended March 31, 2011. In November 2011, we entered into an agreement with Boehringer Ingelheim for large-scale process development and clinical manufacturing of ficlatuzumab. Boehringer Ingelheim will produce ficlatuzumab for clinical trials at its biopharmaceutical site in Fremont, California. We have retained all rights to the development and commercialization of ficlatuzumab. Due to the unpredictable nature of preclinical and clinical development, we are unable to estimate with any certainty the costs we will incur in the future development of the ficlatuzumab program.

AV-203: Anti-ErbB3 Antibody Program

Our AV-203 program is focused on identifying inhibitors of ErbB3. In 2010, we nominated our lead development candidate, AV-203, which is currently in preclinical development. We have granted Biogen Idec an exclusive option to co-develop (with us) and commercialize our ErbB3-targeted antibodies for the potential treatment and diagnosis of cancer and other diseases outside of the United States, Canada and Mexico. Upon the selection of AV-203 as a development candidate in the first quarter of 2010, we earned a $5.0 million milestone payment from Biogen Idec, and we earned an additional $5.0 million milestone payment in June 2011 based on initiation of a GLP toxicology study. Through our discovery efforts, we have identified antibodies that have been shown to be potent and selective inhibitors of ErbB3 in preclinical studies. In preclinical testing, these antibodies have significantly inhibited the growth of a number of different tumors, including breast, prostate and pancreatic cancers. We have commenced manufacturing of our lead development candidate for human clinical trials. We anticipate initiating phase 1 development with AV-203 in 2012. Due to the unpredictable nature of preclinical and clinical development and given the early stage of this program, we are unable to estimate with any certainty the costs we will incur in the future development of any candidate identified from this program.

Platform Collaborations

We perform research services for Centocor under the Centocor license agreement. Centocor funds certain research for a three-year term, including translational research studies using our proprietary Human Response Platform to identify biomarkers for patients most likely to benefit from treatment with RON targeted antibodies. The related expenses are captured as a cost of the agreement with Centocor. We also performed research services for OSI Pharmaceuticals using our Human Response Platform under a collaboration and license agreement with OSI that concluded in July 2011. The related expenses, including personnel and related expenses, were captured as a cost of the agreement with OSI Pharmaceuticals. Expenses incurred under these agreements with Centocor and OSI Pharmaceuticals were fully supported by the revenue from these agreements.

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Antibody Pipeline

We expect that the expenses related to our antibody pipeline will continue to increase as we seek to identify additional targets for preclinical research. Future research and development costs for our antibody pipeline are not reasonably certain because such costs are dependent on a number of variables, including the success of preclinical studies on these antibodies and the identification of other potential candidates across multiple oncology indications.

Other Research and Development

Other research and development includes expenses related to our Human Response Platform, which is not specifically related to a particular product candidate or a specific strategic partnership.

Uncertainties of Estimates Related to Research and Development Expenses

The process of conducting preclinical studies and clinical trials necessary to obtain FDA approval for each of our product candidates is costly and time consuming. The probability of success for each product candidate and clinical trial may be affected by a variety of factors, including, among others, the quality of the product candidate’s early clinical data, investment in the program, competition, manufacturing capabilities and commercial viability.

At this time, we cannot reasonably estimate or know the nature, specific timing and estimated costs of the efforts that will be necessary to complete the remainder of the development of our product candidates, or the period, if any, in which material net cash inflows may commence from sales of any approved products. This is due to the numerous risks and uncertainties associated with developing drugs, including the uncertainty of:

As a result of the uncertainties associated with developing drugs, including those discussed above, we are unable to determine the duration and completion costs of current or future clinical stages of our product candidates (except for the estimates we have made for the cost of our phase 3 clinical trial of tivozanib) or when, or to what extent, we will generate revenues from the commercialization and sale of any of our product candidates. Development timelines, probability of success and development costs vary widely. We anticipate that we will make determinations as to which additional programs to pursue and how much funding to direct to each program on an ongoing basis in response to the scientific and clinical success of each product candidate, as well as ongoing assessment of each product candidate’s commercial potential. We plan to develop additional product candidates internally which will significantly increase our research and development expenses in future periods. We will need to raise additional capital in the future in order to commercialize tivozanib and to fund the development of ficlatuzumab, AV-203 and our other product candidates.

General and Administrative Expenses

General and administrative expenses consist principally of salaries and related costs for personnel in executive, finance, business development, marketing, information technology, legal and human resources functions. Other general and administrative expenses include facility costs not otherwise included in research and development expenses, patent filing, prosecution and defense costs and professional fees for legal, consulting, pre-commercialization activities, auditing and tax services.

We anticipate that our general and administrative expenses will increase for, among others, the following reasons:

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Interest Income and Interest Expense

Interest income consists of interest earned on our cash, cash equivalents and marketable securities. The primary objective of our investment policy is capital preservation.

Interest expense consists primarily of interest, amortization of debt discount, and amortization of deferred financing costs associated with our loans payable.

Income Taxes

We calculate our provision for income taxes on ordinary income based on our projected annual tax rate for the year. We recorded net income for the first time during the three months ended March 31, 2011. We utilized certain of our net operating loss carryforwards to offset taxable income, which resulted in an effective tax rate of 0% for the year ended December 31, 2011. As of March 31, 2012, we are projecting an ordinary loss for the year ended December 31, 2012, and since we maintain a full valuation allowance on all of our deferred tax assets, we have recorded no income tax provision or benefit in the current quarter.

Critical Accounting Policies and Significant Judgments and Estimates

Our discussion and analysis of our financial condition and results of operations are based on our condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues 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 revenue recognition, accrued clinical expenses, and stock-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.

Our significant accounting policies are described in the notes to our condensed consolidated financial statements appearing elsewhere in this report. There have been no material changes to our critical accounting policies during the three months ended March 31, 2012. Please refer to Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, of our annual report on Form 10-K for the fiscal year ended December 31, 2011 for a discussion of our critical accounting policies and significant judgments and estimates.

Results of Operations

Comparison of Three Months Ended March 31, 2012 and 2011

The following table summarizes the results of our operations for each of the three months ended March 31, 2012 and 2011, together with the changes in those items in dollars and as a percentage: