Gilead Sciences to Present at Two Upcoming Investor Conferences

17th Annual Wachovia Nantucket Equity Conference on June 26th Jefferies Healthcare Conference on June 27th Webcasts Available Through Gilead Corporate Website

FOSTER CITY, Calif.--(BUSINESS WIRE)--June 21, 2007--Gilead Sciences, Inc. (Nasdaq:GILD) announced today that it will be webcasting its corporate presentation at two upcoming investor conferences: the 17th Annual Wachovia Nantucket Equity Conference, in Nantucket, Massachusetts, and the Jefferies Healthcare Conference, in New York. These webcasts may be accessed via the company's corporate website at www.gilead.com.

Kevin Young, Gilead's Executive Vice President of Commercial Operations, will provide an overview of the company and an update on key business milestones at the Wachovia conference on Tuesday, June 26 at 9:00 a.m. Eastern Time and at the Jefferies conference on Wednesday, June 27 at 10:50 a.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.

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 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.