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 SEPTEMBER 9, 2003 (SEPTEMBER 8, 2003) ---------------------------------------- Date of Report (Date of earliest event reported) REGENERON PHARMACEUTICALS, INC. ------------------------------------------ (Exact name of registrant as specified in its charter) NEW YORK 0-19034 No. 13-3444607 -------------------------------------------- (State or other jurisdiction (Commission (IRS Employer of incorporation) File Number) Identification No.) 777 OLD SAW MILL RIVER ROAD, TARRYTOWN, NY 10591-6707 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (914) 347-7000 --------------- NOT APPLICABLE ------------------- (Former name or former address, if changed since last report) INFORMATION TO BE INCLUDED IN REPORT ------------------------------------ ITEM 5. OTHER EVENTS. On September 8, 2003, the Company issued a press release, a copy of which is included as an exhibit to this filing. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. (c) Exhibits 99(a) Press Release dated September 8, 2003. 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 thereunto duly authorized. REGENERON PHARMACEUTICALS, INC. ------------------------------- By: /s/ Stuart Kolinski Stuart Kolinski Vice President & General Counsel Date: September 9, 2003 -----------------