Gilead Sciences to Release Second Quarter 2007 Financial Results on Thursday, July 19, 2007

Conference Call and Webcast to Follow

FOSTER CITY, Calif.--(BUSINESS WIRE)--July 12, 2007--Gilead Sciences, Inc. (Nasdaq:GILD) announced today that its second quarter 2007 financial results will be released on Thursday, July 19, 2007, 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 John Martin, PhD, President and Chief Executive Officer; John Milligan, PhD, Chief Operating Officer and Chief Financial Officer; Norbert Bischofberger, PhD, Executive Vice President, Research and Development and Chief Scientific Officer; and Kevin Young, Executive Vice President, Commercial Operations. Gilead management will discuss the results of the company's second quarter of 2007 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 needed to hear the webcast. Alternatively, please call 1-866-831-6243 (U.S.) or 1-617-213-8855 (international) and dial the participant passcode 67563852 to access the call. Telephone replay is available approximately two hours after the call through July 22, 2007. To access, please call 1-888-286-8010 (U.S.) or 1-617-801-6888 (international) and dial the participant passcode 39746560. 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).

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