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): FEBRUARY 19, 2003 DYAX CORP. (Exact name of registrant as specified in its charter) DELAWARE 000-24573 04-3053198 (State or other jurisdiction of (Commission file number) (IRS employer identification incorporation or organization) number) 300 TECHNOLOGY SQUARE, CAMBRIDGE, MA 02139 (Address of Principal Executive Offices) (Zip Code) Registrant's telephone number, including area code: (617) 225-2500 ITEM 5. OTHER EVENTS. On February 19, 2003, Dyax Corp. issued a press release announcing its financial results for the fourth quarter and year ended December 31, 2002. A copy of this press release is filed with this Current Report on Form 8-K as Exhibit 99.1. ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS. (c) Exhibits: 99.1 Press Release, dated February 19, 2003. Filed herewith. 2 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. DYAX CORP. Dated: February 19, 2003 By: /s/ STEPHEN S. GALLIKER ----------------------------------- Stephen S. Galliker Executive Vice President, Finance and Administration, and Chief Financial Officer 3 EXHIBIT INDEX EXHIBIT NO. DESCRIPTION - -------- ----------- 99.1 Press Release dated February 19, 2003.