8-K 1 y90280e8vk.txt FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): September 26, 2003 IGEN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 0-23252 94-2852543 (State or other Jurisdiction of (Commission File Number) (I.R.S. Employer Identification No.) Incorporation)

16020 Industrial Drive Gaithersburg, Maryland 20877 (Principal Executive Office) (Zip Code) Registrant's telephone number, including area code: (301) 869-9800 Exhibit Index on Page 3 Item 5. Other Events and Regulation FD Disclosure See attached press releases filed herewith as Exhibit 99.1 and Exhibit 99.2. Item 7. Financial Statements and Exhibits (c) Exhibits ~~99.1 Press release dated September 29, 2003. 99.2 Press release dated September 29, 2003.~~

2 EXHIBIT INDEX

3 SIGNATURE 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. Date: September 29, 2003 IGEN INTERNATIONAL, INC. By: /s/ George V. Migausky --------------------------------- Name: George V. Migausky Title: Vice President and Chief Financial Officer 4

IGEN INTERNATIONAL INC /DE 8-K