UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 10, 2003 PIONEER NATURAL RESOURCES COMPANY ----------------------------------- (Exact name of Registrant as specified in its charter) DELAWARE 1-13245 75-2702753 ------------------------------- ------------ ---------------------- (State or other jurisdiction of Commission (I.R.S. Employer incorporation or organization) File Number Identification Number) 5205 N. O'CONNOR BLVD., SUITE 1400, IRVING, TEXAS 75039 ------------------------------------------------- ----------- (Address of principal executive offices) (Zip code) Registrant's Telephone Number, including area code : (972) 444-9001 Not applicable (Former name, former address and former fiscal year, if changed since last report) PIONEER NATURAL RESOURCES COMPANY TABLE OF CONTENTS Page Item 7. Financial Statements, Pro Forma Financial Information and Exhibits: (c) Exhibits............................................ 3 Item 9. Regulation FD Disclosure................................. 3 Signatures........................................................ 4 Exhibit Index..................................................... 5 2 PIONEER NATURAL RESOURCES COMPANY ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS (c) Exhibits 99.1 News Release dated January 10, 2003 ITEM 9. REGULATION FD DISCLOSURE The information in this document includes forward-looking statements that are made pursuant to the Safe Harbor Provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements, and the business prospects of Pioneer Natural Resources Company (the "Company") are subject to a number of risks and uncertainties which may cause the Company's actual results in future periods to differ materially from the forward-looking statements. These risks and uncertainties include, among other things, volatility of oil and gas prices, product supply and demand, competition, international operations and associated international political and economic instability, government regulation or action, foreign currency valuation changes, foreign government tax and regulation changes, litigation, the costs and results of drilling and operations, the Company's ability to replace reserves, implement its business plans, or complete its development projects as scheduled, access to and cost of capital, uncertainties about estimates of reserves, quality of technical data, environmental and weather risks. These and other risks are described in the Company's 2001 Annual Report on Form 10-K and Quarterly Reports on Form 10-Q that are available from the Company or the Securities and Exchange Commission. On January 10, 2003, the Company issued a news release that is attached hereto as exhibit 99.1. The news release updated the Company's fourth quarter 2002 outlook based on current expectations and partial quarter actual results. 3 PIONEER NATURAL RESOURCES COMPANY S I G N A T U R E S Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. PIONEER NATURAL RESOURCES COMPANY Date: January 10, 2003 By: /s/ RICHARD P. DEALY ------------------------------------------ Richard P. Dealy Vice President and Chief Accounting Officer 4 PIONEER NATURAL RESOURCES COMPANY EXHIBIT INDEX Exhibit No. Description 99.1* News Release dated January 10, 2003 ------------- * filed herewith 5