Gilead Sciences to Present at Two Upcoming Investor Conferences

Smith Barney Citigroup 2005 Healthcare Conference on March 30th; 8th Annual Lehman Brothers Global Healthcare Conference on March 31st; Webcasts Available Through Gilead Corporate Website

FOSTER CITY, Calif.--(BUSINESS WIRE)--March 28, 2005-- Gilead Sciences, Inc. (Nasdaq:GILD) announced today that its corporate presentation will be webcast at two upcoming investor conferences: the Smith Barney Citigroup 2005 Healthcare Conference, in Washington, DC, and the 8th Annual Lehman Brothers Global Healthcare Conference, in Miami, Florida. These webcasts may be accessed via the company's corporate website at www.gilead.com.

Mark Perry, Gilead's Senior Business Advisor, will provide an overview of the company and an update on key business milestones first at the Smith Barney conference on Wednesday, March 30th at 11:30 a.m. Eastern Time, then again at the Lehman conference on Thursday, March 31st at 2:00 p.m. Eastern Time.

To access the live webcasts via the internet log on to www.gilead.com. Please connect to the company's website at least 15 minutes prior to each live presentation to ensure adequate time for any software download that may be necessary to listen to the webcast.

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 or call the Gilead Public Affairs Department at 1-800-GILEAD-5 (1-800-445-3235).

CONTACT: Gilead Sciences, Inc. Susan Hubbard, 650-522-5715 (Investor Relations) SOURCE: Gilead Sciences, Inc.