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) March 29, 2004 -------------------------- GRILL CONCEPTS, INC. ----------------------------------------------------- (Exact name of registrant as specified in its charter) Delaware 0-23226 13-3319172 ---------------------------- ---------------- ---------------- (State or other jurisdiction (Commission file (IRS Employer Number) of incorporation number) 11661 San Vicente Blvd., Suite 404, Los Angeles, California 90049 ----------------------------------------------------------------- (Address of principal executive offices)(Zip Code) (310) 820-5559 --------------------------------------------------- (Registrant's telephone number, including area code) -------------------------------------------------------------- (Former name and former address, if changed since last report) ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS (c) Exhibits Exhibit Number Description ------ ----------- 99.1 Grill Concepts, Inc. quarterly earnings release for the year and quarter ended December 28, 2003 ITEM 12. RESULTS OF OPERATIONS AND FINANCIAL CONDITION On March 29, 2004, Grill Concepts, Inc. issued an earnings release announcing its financial results for the quarter and year ended December 28, 2003. A copy of the earnings release is attached as Exhibit 99.1. The information in this report is being furnished, not filed, for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and pursuant to Item 12 of Form 8-K will not be incorporated by reference into any filing under the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Current Report on Form 8-K to be signed on its behalf by the undersigned hereunto duly authorized. GRILL CONCEPTS, INC. Dated: March 29, 2004 By: /s/ Robert Spivak Robert Spivak President 3