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 December 30, 2002 -------------------------------------------------- (Date of Report - Date of earliest event reported) KERR-McGEE CORPORATION ------------------------------------------------------ (Exact name of registrant as specified in its charter) Delaware 1-16619 73-1612389 -------------- ------------------------ ------------------ (State of (Commission File Number) (IRS Employer Incorporation) Identification No.) Kerr-McGee Center Oklahoma City, Oklahoma 73125 ---------------------------------------- ---------- (Address of principal executive offices) (Zip Code) (405) 270-1313 ------------------------------- (Registrant's telephone number) Item 9. Regulation FD Disclosure On December 30, 2002, Kerr-McGee Corporation issued a press release announcing that it will take a special after-tax noncash charge of approximately $385 million during the fourth quarter for the estimated costs related to impairments for the Leadon field and various other fields in the United Kingdom and the Gulf of Mexico. The press release is attached hereto as an exhibit and is incorporated by reference herein. Item 7. Financial Statements, Pro Forma Financial Information and Exhibits (c) Exhibits 99.1 Press Release dated December 30, 2002 SIGNATURES 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. KERR-MCGEE CORPORATION By: (John M. Rauh) ----------------------------- John M. Rauh Vice President and Controller Dated: December 30, 2002