________________________________________________________________________________ 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 22, 2000 ------------------- ENZON, INC. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) ------------------- DELAWARE 0-12957 22-237286 (STATE OR OTHER JURISDICTION (COMMISSION (IRS EMPLOYER OF INCORPORATION) FILE NUMBER) IDENTIFICATION) 20 KINGSBRIDGE ROAD 08854 PISCATAWAY, NEW JERSEY (ZIP CODE) (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE (732) 980-4500 ------------------- ________________________________________________ (FORMER NAME OR FORMER ADDRESS, IF CHANGED SINCE LAST REPORT) ________________________________________________________________________________ ITEM 5. OTHER EVENTS On February 22, 2000, Enzon, Inc. issued a press release, a copy of which is attached as Exhibit 99.1 and incorporated by reference herein. ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS. (c) Exhibit 99.1 -- Press Release dated February 22, 2000. 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. Dated: February 22, 2000 ENZON, INC. (Registrant) By: /s/ KENNETH J. ZUERBLIS .................................. KENNETH J. ZUERBLIS VICE PRESIDENT, FINANCE AND CHIEF FINANCIAL OFFICER