- -------------------------------------------------------------------------------- UNITED STATES 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): May 7, 2003 RANGE RESOURCES CORPORATION (Exact name of registrant as specified in its charter)

DELAWARE 0-9592 34-1312571 - ---------------------------------- ------------------------------------- ------------------------------- (State or other jurisdiction of (Commission (IRS Employer incorporation) File Number) Identification No.)
777 MAIN STREET FT. WORTH, TEXAS 76102 - ----------------------------------- -------------------------------- (Address of principal executive (Zip Code) offices) Registrant's telephone number, including area code: (817) 870-2601 (Former name or former address, if changed since last report): Not applicable 1

ITEM 9. REGULATIONS FD DISCLOSURE On May 7, 2003, the Registrant filed a Form 10-Q for the quarter ending March 31, 2003, the filing was accompanied by certifications of the President and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. The certifications are attached as Exhibits 99.1 and 99.2. 2

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. RANGE RESOURCES CORPORATION By: /s/ EDDIE M. LEBLANC ----------------------------------- Eddie M. LeBlanc Chief Financial Officer Date: May 7, 2003 3

EXHIBIT INDEX

EXHIBIT NUMBER DESCRIPTION ------- ----------- 99.1 Certification of President, dated May 7, 2003, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 99.2 Certification of Chief Financial Officer, dated May 7, 2003, pursuant to 18 U.S.C. Section 906 of the Sarbanes-Oxley Act of 2002.
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EXHIBIT 99.1 CERTIFICATION OF PRESIDENT OF RANGE RESOURCES CORPORATION PURSUANT TO 18 U.S.C. SECTION 1350 1. I, John H. Pinkerton, President of Range Resources Corporation (the "Company"), hereby certify to the best of my knowledge that the accompanying report on Form 10-Q for the period ending March 31, 2003 and filed with the Securities and Exchange Commission of the date hereof pursuant to Section 13 (a) of the Securities Exchange Act of 1934 (the "Report") by the Company fully complies with the requirements of that section. 2. I further certify to the best of my knowledge that the information contained in the Report fairly presents, in all material aspects, the financial conditions and results of operations of the Company. By: /s/ JOHN H. PINKERTON ----------------------------------- Name: John H. Pinkerton Date: May 7, 2003

EXHIBIT 99.2 CERTIFICATION OF PRESIDENT OF RANGE RESOURCES CORPORATION PURSUANT TO 18 U.S.C. SECTION 1350 1. I, Eddie M. LeBlanc of Range Resources Corporation (the "Company"), hereby certify to the best of my knowledge that the accompanying report on Form 10-Q for the period ending March 31, 2003 and filed with the Securities and Exchange Commission of the date hereof pursuant to Section 13 (a) of the Securities Exchange Act of 1934 (the "Report") by the Company fully complies with the requirements of that section. 2. I further certify to the best of my knowledge that the information contained in the Report fairly presents, in all material aspects, the financial conditions and results of operations of the Company. By: /s/ EDDIE M. LEBLANC ----------------------------------- Name: Eddie M. LeBlanc Date: May 7, 2003