Company:  GRAN TIERRA ENERGY INC. (GTE)
Form Type:  10-K
Filing Date:  2/27/2012 
CIK:  0001273441 
Address:  300, 625 - 11TH AVENUE S.W. 
City, State, Zip:  CALGARY,  T2R 0E1 
Telephone:  (403) 265-3221 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$6.31  
Change: 
-0.14 (-2.17%)  
Trade Time: 
May 21  
Market Cap: 
$1.70B
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
        NAME AND TITLE
    PART II
      Item 5. Market for Common Equity, Related Stockholder ...
      Item 6. Selected Financial Data
      Item 7. Management's Discussion and Analysis of Financial ...
        Consolidated Results of Operations
        LIQUIDITY AND CAPITAL RESOURCES
          BALANCE SHEET
      Item 7A. Quantitative and Qualitative Disclosure about ...
      Item 8. Financial Statements and Supplementary Data.
        Report of Independent Registered Chartered Accountants
        INCOME STATEMENT
        BALANCE SHEET
        CASH FLOW
        STOCKHOLDERS EQUITY
        Notes to the Consolidated Financial Statements
      Item 9. Changes in and Disagreements with Accountants on ...
      Item 9A. Controls and Procedures
      Report of Independent Registered Chartered Accountants
      Item 9B. Other Information
    PART III
      Item 10. Directors, Executive Officers and Corporate Governance
      Item 11. Executive Compensation
      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, Financial Statement Schedules
    SIGNATURES
    EXHIBIT INDEX
  EXHIBIT 10.53
  EXHIBIT 10.54
  EXHIBIT 10.55
  EXHIBIT 10.56
  EXHIBIT 10.57
  EXHIBIT 10.58
  EXHIBIT 10.59
  EXHIBIT 21.1
    SUBSIDIARIES
  EXHIBIT 23.1
    Consent of Independent Registered Chartered Accountants
  EXHIBIT 23.2
    Consent of Independent Reserve Engineers
  EXHIBIT 31.1
    CERTIFICATION
  EXHIBIT 31.2
    CERTIFICATION
  EXHIBIT 32.1
    Certification Pursuant to Section 906 of the Sarbanes-Oxley ...
  EXHIBIT 99.1