MELVILLE, N.Y.--(BUSINESS WIRE)--Feb. 21, 2006--OSI Pharmaceuticals, Inc. (Nasdaq: OSIP) announced today that its fourth quarter and year-end 2005 financial results will be released on March 7, 2006 at 5:00 p.m. Eastern Time. At 7:30 a.m. on March 8, 2006 OSI will host a live conference call and webcast with slides on the Company’s website to review the Company’s financial results, product portfolio and business developments.