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) DECEMBER 12, 2002 (DECEMBER 16, 2002) 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) INFORMATION TO BE INCLUDED IN THE REPORT ITEM 5. OTHER EVENTS Chesapeake Energy Corporation ("Chesapeake") entered into an underwriting agreement with Credit Suisse First Boston Corporation, Morgan Stanley & Co. Incorporated, Salomon Smith Barney Inc., Bear, Stearns & Co. Inc., Lehman Brothers Inc. and Johnson Rice & Company L.L.C. in connection with the issuance and sale by Chesapeake of 20,000,000 shares of its common stock, plus an additional 3,000,000 shares of its common stock pursuant to the underwriters' over-allotment option. Item 7. FINANCIAL STATEMENTS AND EXHIBITS (C) Exhibits 1.1 Underwriting Agreement dated December 12, 2002 by and among Chesapeake Energy Corporation, Credit Suisse First Boston Corporation, Morgan Stanley & Co. Incorporated, Salomon Smith Barney Inc., Bear, Stearns & Co. Inc., Lehman Brothers Inc. and Johnson Rice & Company L.L.C. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant had 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: December 16, 2002 EXHIBIT INDEX EXHIBIT NUMBER DESCRIPTION 1.1 Underwriting Agreement dated December 12, 2002 by and among Chesapeake Energy Corporation, Credit Suisse First Boston Corporation, Morgan Stanley & Co. Incorporated, Salomon Smith Barney Inc., Bear, Stearns & Co. Inc., Lehman Brothers Inc. and Johnson Rice & Company L.L.C.