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 May 11, 2004 ------------ Date of Report (Date of earliest event reported) OSI PHARMACEUTICALS, INC. ------------------------- (Exact name of registrant as specified in its charter) DELAWARE 0-15190 13-3159796 --------- ------- ---------- (State or other jurisdiction of (Commission (I.R.S. Employer incorporation) File Number) Identification No.) 58 SOUTH SERVICE ROAD MELVILLE, NY 11747 ---------------------------------------- (Address of principal executive offices) (631) 962-2000 ---------------------------------------------------- (Registrant's telephone number, including area code) N/A ---------------------------------- (Former name or former address, if changed since last report.) ITEM 7. EXHIBITS EXHIBIT NO. DESCRIPTION ----------- ----------- 99.1 Press release, dated May 11, 2004. ITEM 12. RESULTS OF OPERATIONS AND FINANCIAL CONDITION On May 11, 2004, OSI Pharmaceuticals, Inc. (the "Company") issued a press release regarding its financial results for the quarter ended March 31, 2004. The Company's press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein. The information in this Current Report on Form 8-K and the Exhibit attached hereto is being "furnished" and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 (the "Securities Act") or the Exchange Act, except if the Company specifically states that the information and the Exhibit is to be considered "filed" under the Exchange Act or incorporates it by reference into a filing under the Securities Act or the Exchange Act. 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: May 13, 2004 OSI PHARMACEUTICALS, INC. By: /s/ Robert L. Van Nostrand -------------------------------- Robert L. Van Nostrand Vice President and Chief Financial Officer (Principal Financial Officer) EXHIBIT INDEX EXHIBIT NO. DESCRIPTION ----------- ----------- 99.1 Press release, dated May 11, 2004.