4 1 form4_092602.txt ------------------------------ OMB APPROVAL ------------------------------ OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response.........0.5 ------------------------------ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP 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 |_| Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). (Print of Type Responses) ________________________________________________________________________________ 1. Name and Address of Reporting Person* Massey Richard J. -------------------------------------------------------------------------------- (Last) (First) (Middle) c/o IGEN International, Inc. 16020 Industrial Drive -------------------------------------------------------------------------------- (Street) Gaithersburg MD 20877 -------------------------------------------------------------------------------- (City) (State) (Zip) ________________________________________________________________________________ 2. Issuer Name and Ticker or Trading Symbol IGEN International, Inc. ________________________________________________________________________________ 3. I.R.S. Identification Number of Reporting Person, if an entity (voluntary) ________________________________________________________________________________ 4. Statement for Month/Day/Year 09-26-2002 ________________________________________________________________________________ 5. If Amendment, Date of Original (Month/Day/Year) ________________________________________________________________________________ 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) |X| Director |_| 10% Owner |X| Officer (give title below) |_| Other (specify below) President & Cheif Operating Officer ____________________________________________________________________ ________________________________________________________________________________ 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 ================================================================================

FORM 4 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================

Explanation of Responses: (1) Sales made pursuant to plan adopted by reporting person under Rule 10b5-1 on September 23, 2002 covering 319,800 shares at a limit price of not less than $30.00. (2) Includes 11,200 shares of common stock that were issued under an early exercise feature in the options granted to Dr. Massey, subject to a repurchase right in favor of the Company at the option exercise price in the event that the holder's employment with IGEN terminates prior to vesting. /s/ Richard J. Massey September 30, 2002 --------------------------------------------- ----------------------- **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). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Page 2

MASSEY RICHARD J 4