Conference Call and Webcast to FollowFOSTER CITY, Calif.--(BUSINESS WIRE)--Apr. 14, 2009--
      Gilead Sciences, Inc. (Nasdaq:GILD) announced today that its first
      quarter 2009 financial results will be released on Tuesday, April 21,
      2009, at 4:05 p.m. Eastern Time. At 4:30 p.m. Eastern Time, Gilead will
      webcast a conference call live on the company’s internet site. The call
      will be led by Gilead management, who will discuss the financial results
      for the company’s first quarter 2009 and provide a general business
      update.
    
      To access the webcast via the internet, log on to www.gilead.com.
      Please connect to the company’s website at least 15 minutes prior to the
      conference call to ensure adequate time for any software download that
      may be required to listen to the webcast. Alternatively, please call
      1-800-901-5259 (U.S.) or 1-617-786-4514 (international) and dial the
      participant passcode 58961103 to access the call. Telephone replay is
      available approximately two hours after the call through 6:30 p.m.
      Eastern Time, April 24, 2009. To access the replay, please call
      1-888-286-8010 (U.S.) or 1-617-801-6888 (international) and dial the
      participant passcode 42508678. The webcast will be archived on www.gilead.com
      for one year.
    
About Gilead
Gilead Sciences is a biopharmaceutical company that discovers, develops
      and commercializes innovative therapeutics in areas of unmet medical
      need. The company’s mission is to advance the care of patients suffering
      from life-threatening diseases worldwide. Headquartered in Foster City,
      California, Gilead has operations in North America, Europe and Australia.
    
For more information on Gilead Sciences, please visit www.gilead.com
      orcall the Gilead Public Affairs Department at 1-800-GILEAD-5
      (1-800-445-3235).
Source: Gilead Sciences, Inc.
      Gilead Sciences, Inc.Susan Hubbard, 650-522-5715 (Investor
      Relations)