Company:  PIONEER SOUTHWEST ENERGY ... (PSE)
Form Type:  10-K
Filing Date:  2/29/2012 
CIK:  0001407463 
Address:  5205 N. O'CONNOR BLVD., SUITE 200 
City, State, Zip:  IRVING, Texas 75039 
Telephone:  (972) 444-9001 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$33.26  
Change: 
-0.38 (-1.13%)  
Trade Time: 
May 24  
Market Cap: 
$1.19B
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
        Capital Commitments, Capital Resources and Liquidity
      ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT ...
      ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
        REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
        BALANCE SHEET
        BALANCE SHEET
        INCOME STATEMENT
        STOCKHOLDERS EQUITY
        CASH FLOW
        NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
          BALANCE SHEET
          BALANCE SHEET
          INCOME STATEMENT
      ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ...
      ITEM 9A. CONTROLS AND PROCEDURES
      REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
      ITEM 9B. OTHER INFORMATION
    PART III
      ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
        NAME AND TITLE
      ITEM 11. EXECUTIVE COMPENSATION
        COMPENSATION TABLE
        OPTIONS
      ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND ...
        BENEFICIAL OWNERS
      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 21.1
    SUBSIDIARIES
  EXHIBIT 23.1
    CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
  EXHIBIT 23.2
    CONSENT OF INDEPENDENT PETROLEUM ENGINEERS AND GEOLOGISTS
  EXHIBIT 31.1
    CHIEF EXECUTIVE OFFICER CERTIFICATION
  EXHIBIT 31.2
    CHIEF FINANCIAL OFFICER CERTIFICATION
  EXHIBIT 32.1
    CERTIFICATION OF
  EXHIBIT 32.2
    CERTIFICATION OF
  EXHIBIT 99.1