Dec 22 2009
OSI Pharmaceuticals, Inc. (NASDAQ: OSIP) today provided an update to the 
      preliminary revenue and adjusted earnings per share growth rate guidance 
      provided to investors at the Company’s recent analyst R&D day meeting on 
      December 3, 2009. The Company now believes that the 2010 overall revenue 
      percentage growth rate will be in the mid-teens and re-affirms that 
      adjusted earnings per share will grow at 10% or more.
    
“We believe it is important for us to provide investors with some 
      preliminary quantification of the relatively limited potential financial 
      impact of last week’s surprising ODAC meeting”
    
      “We believe it is important for us to provide investors with some 
      preliminary quantification of the relatively limited potential financial 
      impact of last week’s surprising ODAC meeting,” stated Colin Goddard, 
      Chief Executive Officer of OSI Pharmaceuticals. “Even assuming a 
      scenario where we are unable to secure any label expansion from the 
      ongoing sNDA application for Tarceva based on the SATURN study, we 
      believe the business will continue to exhibit solid growth in 2010 with 
      an overall revenue growth rate in the mid-teens (percentage wise) – 
      broadly in-line with the ranges communicated to investors at our recent 
      research analyst meeting in early December.”
    
    
      The Company also provided investors with an update on the re-purchase of 
      a portion of its outstanding convertible debt bonds. As of December 22, 
      2009, the Company had purchased $39.5 million face value of the 2023 
      convertible bonds for $37.6 million and $40.0 million face value of the 
      2038 convertible bonds for $37.4 million. The aggregate amount of the 
      Company’s outstanding 2038 Notes, 2023 Notes and 2025 Notes at face 
      value is now equal to $335.5 million. The Company may, from 
      time-to-time, continue to selectively re-purchase convertible debt bonds 
      and common stock throughout 2010.