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) ------------------------------------------------------------------------------- FEBRUARY 23, 2004 (FEBRUARY 23, 2004) CHESAPEAKE ENERGY CORPORATION ------------------------------------------------------------------------------- (Exact name of Registrant as specified in its Charter) OKLAHOMA 1-13726 73-1395733 ------------------------------------------------------------------------------- (State or other jurisdiction (Commission File No.) (IRS Employer of incorporation) Identification No.) 6100 NORTH WESTERN AVENUE, OKLAHOMA CITY, OKLAHOMA 73118 ------------------------------------------------------------------------------- (Address of principal executive offices) (Zip Code) (405) 848-8000 ------------------------------------------------------------------------------- (Registrant's telephone number, including area code) 2 INFORMATION TO BE INCLUDED IN THE REPORT ITEM 9. REGULATION FD ITEM 12. DISCLOSURE OF RESULTS OF OPERATIONS AND FINANCIAL CONDITION We issued a press release on February 23, 2004, which includes information regarding our consolidated results of operations and financial condition as of and for the quarterly period ended December 31, 2003 and for the full-year 2003. It also includes updated information on our 2004 outlook. The text of that press release is attached to this Report as Exhibit 99.1. This information, including the exhibit attached hereto, is being furnished pursuant to Item 9 and Item 12 of Form 8-K and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as may be expressly set forth by specific reference therein. 2 3 SIGNATURE 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, thereunto duly authorized. CHESAPEAKE ENERGY CORPORATION BY: /S/ AUBREY K. MCCLENDON ---------------------------------- AUBREY K. MCCLENDON Chairman of the Board and Chief Executive Officer Dated: February 23, 2004 3