Gilead Sciences to Release First Quarter 2007 Financial Results on Wednesday, April 18, 2007

Gilead Sciences, Inc. (Nasdaq: GILD) announced today that its
first quarter 2007 financial results will be released on Wednesday,
April 18, 2007, at 4:00 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 first 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
1-866-510-0712 (U.S.) or 1-617-597-5380 (international) and dial the
participant passcode 30443590 to access the call. Telephone replay is
available approximately two hours after the call through 4:00 p.m.
Eastern Time, April 21, 2007. To access, please call 1-888-286-8010
(U.S.) or 1-617-801-6888 (international) and dial the participant
passcode 71136594. 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).