SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K [X] Current report pursuant to Section 13 or 15(d) of the Securities and ExchangeAct of 1934. October 20, 2004 Date of Report (Date of earliest event reported) CIMAREX ENERGY CO. (Exact name of registrant as specified in its charter) Delaware 001-31446 45-0466694 (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) No.) File Number) Identification 1700 Lincoln Street, Suite 1800 Denver, Colorado 80203 (Address of principal executive offices) Telephone Number (303) 295-3995 (Registrant's telephone number) Not applicable (Former name and address) ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS C. Exhibits Exhibit No. Description 99.1 Press Release is furnished pursuant to Item 9. ITEM 9. REGULATION FD DISCLOSURE On October 20, 2004, Cimarex Energy Co. (NYSE XEC) reported its third-quarter 2004 production volumes and scheduled the third quarter 2004 conference call. A copy of the press release is furnished as Exhibit 99.1. 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. CIMAREX ENERGY CO. Dated: October 20, 2004 By: /s/ Paul Korus --------------------------- Paul Korus, Vice President, Chief Financial Officer, Treasurer and Secretary EXHIBIT INDEX Exhibit No. Description ----------- ----------- 99.1 Press Release