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 April 7, 2004 -------------------------------------------------- (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 April 7, 2004, Kerr-McGee Corporation and Westport Resources Corporation issued a joint press release announcing that their boards of directors have unanimously approved a strategic merger. The merged company will be known as Kerr-McGee Corporation and will be headquartered in Oklahoma City. 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 April 7, 2004 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: April 7, 2004