U. S. 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) July 17, 2003 BANCFIRST CORPORATION --------------------- (Exact name of registrant as specified in its charter) OKLAHOMA 0-14384 73-1221379 -------- ------- ---------- (State or other jurisdiction of (Commission (I.R.S. Employer ncorporation) File Number) Identification No.) 101 North Broadway, Oklahoma City, Oklahoma 73102 ------------------------------------------- ----- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (405) 270-1086 Item 9. Regulation FD Disclosure. On July 17, 2003, BancFirst Corporation announced its results of operations for the quarter ended June 30, 2003. A copy of the related press release is being filed as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference in its entirety. SIGNATURES Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. BANCFIRST CORPORATION (Registrant) Date July 17, 2003 /s/ Randy P. Foraker ------------------------------------- (Signature) Randy P. Foraker Senior Vice President and Controller; Assistant Secretary/Treasurer (Principal Accounting Officer) Exhibit Index Exhibit Number -------------- 99.1 Press Release, dated July 17, 2003, issued by BancFirst Corporation. 2