United States SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): March 13, 2003 --------------------- UNIT CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-9260 73-1283193 -------------- ---------- ----------------- (State or other jurisdiction (Commission File IRS Employer of incorporation) Number) Identification No.) 1000 Kensington Tower 7130 South Lewis Tulsa, Oklahoma 74136 ---------------------------------- ---------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (918) 493-7700Item 9. Regulation FD Disclosure On March 13, 2003 the Principal Executive Officer, John G. Nikkel, and Principal Financial Officer, Larry D. Pinkston, of Unit Corporation, filed with the SEC certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. A copy of each of these certifications is attached hereto as an Exhibit (99.1 and 99.2). 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. UNIT CORPORATION By: /s/ John G. Nikkel ------------------------- John G. Nikkel Chief Executive Officer Date: March 13, 2003 EXHIBIT INDEX Exhibit (99.1) Certificate of Principal Executive Officer dated March 13, 2003. Exhibit (99.2) Certificate of Principal Financial Officer dated March 13, 2003.
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Unit Corporation (the "Company") on Form 10-K for the period ended December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, John G. Nikkel, Chief Executive Officer of the Company, certify, solely for the purpose of complying with 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that: (1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ John G. Nikkel ------------------------------------ John G. Nikkel Chief Executive Officer March 13, 2003
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Unit Corporation (the "Company") on Form 10-K for the period ended December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Larry D. Pinkston, Chief Financial Officer of the Company, certify, solely for the purpose of complying with 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that: (1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ Larry D. Pinkston -------------------------------- Larry D. Pinkston Chief Financial Officer March 13, 2003