Form 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940 (Print or Type Responses) 1. Name and Address of Reporting Person* (Last)(First)(Middle) Kelley, Brad M. (Street) 1600 Jean LaFitte (City)(State)(Zip) Boca Grande, FL 33921 2. Issuer Name and Ticker or Trading Symbol Antigenics Inc.. (NASDAQ:AGEN) 3. I.R.S. Identification Number of Reporting Person, if an entity (voluntary)NA 4. Statement for (Month/Day/Year) 03/18/2003 5. If Amendment, Date of Original (Month/Day/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) ___Director ___Officer (give title below) X 10% Owner ___Other (specify below) 7. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person _____Form filed by More than One Reporting Person Table I Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1. Title of Security Common Stock (Instr. 3) 2. Transaction Date (03/13-14/2003) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code Code Instr. 8) V ______ 4. Securities Acquired (A) Amount 25,000 shares (Instr. 3, 4 and 5) price 7.45 share cost 187,500 date 03/13/03 Amount 50,000 shares price 7.29 cost 364,654 date 03/14/03 5. Amount of Securities Beneficially Owned Following Reported Transactions(s) (Instr. 3 and 4) 5,546,240 shares 6. Ownership Form: Direct (D) or Indirect (I) D (Instr. 4) 7. Nature of Indirect Beneficial Ownership N/A (Instr. 4) Table II Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) N/A Brad M. Kelley_____________________03/18/2003______ **Signature of Reporting Person Date Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly * If the form is filed by more than one reporting person, see Instruction 4(b)(v). ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).