04-HP-876_10K.qxd 12/15/04 2:43 PM Page 23 10.14 Credit Agreement, dated as of July 16, 2002, among Helmerich & Payne International Drilling Co., Helmerich & Payne, Inc., the several lenders from time to time party thereto, and Bank of Oklahoma, National Association is incorporated herein by reference to Exhibit 10.5 of the Company’s Quarterly Report on Form 10-Q to the Securities and Exchange Commission for the quar ter ended June 30, 2002, SEC File No. 001-04221. 10.15 Note Purchase Agreement dated as of August 15, 2002, among Helmerich & Payne International Drilling Co., Helmerich & Payne, Inc. and various insurance companies is incorporated herein by reference to Exhibit 10.20 of the Company’s Annual Report on Form 10-K to the Securities and Exchange Commission for fiscal 2002, SEC File No. 001-04221. 10.16 Office Lease dated May 30, 2003, between K/B Fund IV and Helmerich & Payne, Inc. is incorporated herein by reference to Exhibit 10.18 of the Company’s Annual Report on Form 10-K to the Securities and Exchange Commission for fiscal 2003, SEC File No 001-04221. *10.17 Helmerich & Payne, Inc. Director Deferred Compensation Plan is incorporated herein by reference to Exhibit 10.1 of the Company’s Form 8-K filed on September 9, 2004. 10.18 Shareholders Agreement and Registration Rights Agreement dated July 19, 2004 between Helmerich & Payne International Drilling Co and Atwood Oceanics, Inc. is incorporated herein by reference to Exhibit 1.1 of the Company’s Amended Schedule 13D filed on July 21, 2004. 10.19 Underwriting Agreement dated October 13, 2004, between Helmerich & Payne International Drilling Co. and various underwriters is incorporated herein by reference to Exhibit 1.1 of the Company’s Form 8-K filed on October 14, 2004. *10.20 Helmerich & Payne, Inc. Annual Bonus Plan for Executive Officers is incorporated herein by reference to Exhibit 10.1 of the Company’s Form 8-K filed on December 6, 2004. 13. The Company’s Annual Repor to Shareholders for fiscal 2004. 21. List of Subsidiaries of the Company is incorporated herein by reference to Exhibit 21 of the Company’s Annual Report on Form 10-K to the Securities and Exchange Commission for fiscal 2003, SEC File No. 001-04221. 23.1 Consent of Independent Registered Public Accounting Firm. 31.1 Certification of Chief Executive Officer, as Adopted P ursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 31.2 Certification of Chief Financial Officer, as Adopted P ursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 32 Certification of Chief Executive Officer and Chief F inancial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. * Management or Compensatory Plan or Arrangement. (b) Reports on Form 8-K The Company filed two reports on Form 8-K during the last quarter of fiscal 2004 as follows: GLYPH<UIforward> Form 8-K dated July 22, 2004, containing a Press R elease with attached Unaudited Consolidated Condensed Balance Sheets, Consolidated Statements of Income and Financial Results – Lines of Business, announcing the Company’s third quarter 2004 earnings. GLYPH<UIforward> Form 8-K dated September 2, 2004, disclosing the approval by the Company’s Board of Directors of the Helmerich & Payne, Inc. Director Deferred Compensation Plan, to become effective October 1, 2004. 20