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): November 24, 2003 ANTIGENICS INC. (Exact name of registrant as specified in its charter) DELAWARE 000-29089 06-1562417 (State or other jurisdiction of (Commission file number) (I.R.S. Employer incorporation of organization) Identification No.) 630 FIFTH AVENUE, SUITE 2100 NEW YORK, NEW YORK 10111 (Address of principal executive offices and zip code) (212) 994-8200 (Registrant's telephone number, including area code) Item 5. Other Events On November 24, 2003, the Company announced that the US Food and Drug Administration (FDA) has lifted the partial clinical hold on the two Phase III clinical trials of the company's personalized cancer vaccine Oncophage(R) (HSPPC-96). The full text of the press release issued in connection with the announcement is attached as Exhibit 99.1 to this current report on Form 8-K. Item 7. Financial Statements and Exhibits. (c) Exhibits: 99.1 Press Release dated November 24, 2003 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. ANTIGENICS INC. Date: November 24, 2003 By: /s/ Garo H. Armen ----------------- Garo H. Armen, Ph.D. Chairman and Chief Executive Officer EXHIBIT INDEX The following designated exhibits are filed herewith: Exhibits: 99.1 Press Release dated November 24, 2003