Company:  TESARO, INC. (TSRO)
Form Type:  10-K
Filing Date:  2/20/2013 
CIK:  0001491576 
Address:  1000 WINTER STREET, SUITE 3300 
City, State, Zip:  WALTHAM, Massachusetts 02451 
Telephone:  (339) 970-0900 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$24.65  
Change: 
-0.72 (-2.84%)  
Trade Time: 
10:32 AM EST  
Market Cap: 
$887.15M
Description of Business
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  FORM 10-K
    PART I
      ITEM 1. BUSINESS:
      ITEM 1A. RISK FACTORS:
      ITEM 1B. UNRESOLVED STAFF COMMENTS
      ITEM 2. PROPERTIES
      ITEM 3. LEGAL PROCEEDINGS
      ITEM 4. MINE SAFETY DISCLOSURES
    PART II
      ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED ...
      ITEM 6. SELECTED FINANCIAL DATA
      ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL ...
        Results of Operations
        Liquidity and Capital Resources
      Item 7A. Quantitative and Qualitative Disclosures About ...
      Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
        Report of Independent Registered Public Accounting Firm
        BALANCE SHEET
        INCOME STATEMENT
        STOCKHOLDERS EQUITY
        CASH FLOW
        Notes to Consolidated Financial Statements
      Item 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ...
      Item 9A. CONTROLS AND PROCEDURES
      Item 9B. OTHER INFORMATION
    PART III
      Item 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
        NAME AND TITLE
      Item 11. EXECUTIVE COMPENSATION
        COMPENSATION TABLE
        OPTIONS
        OPTIONS AGGREGATE
      Item 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND ...
      Item 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND ...
      Item 14. PRINCIPAL ACCOUNTING FEES AND SERVICES
    PART IV
      Item 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
    SIGNATURES
    INDEX TO EXHIBITS
  EXHIBIT 21.1
  EXHIBIT 23.1
    Consent of Independent Registered Public Accounting Firm
  EXHIBIT 31.1
    CERTIFICATIONS
  EXHIBIT 31.2
    CERTIFICATIONS
  EXHIBIT 32.1
    CERTIFICATION PURSUANT TO
  EXHIBIT 32.2
    CERTIFICATION PURSUANT TO
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