January 24, 2007

Gilead Sciences to Release Fourth Quarter and Year End 2006 Financial Results on Wednesday, January 31, 2007

Conference Call and Webcast to Follow

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 needed to hear the webcast. Alternatively, please call 1-800-901-5259 (U.S.) or 1-617-786-4514 (international) and dial the participant passcode 19934233 to access the call. Telephone replay is available approximately two hours after the call through 4:00 p.m. Eastern Time, February 2, 2007. To access, please call 1-888-286-8010 (U.S.) or 1-617-801-6888 (international) and dial the participant passcode 79206534. 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 or call 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

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