Gilead Appoints John C. Martin as Chairman of Board of Directors; Names John F. Milligan President

Gilead Sciences, Inc. (Nasdaq:GILD) today announced that John C. Martin

PhD has been appointed Chairman of the Board of Directors, and John F.

Milligan, PhD has been appointed President.
Dr. Martin will continue to serve as Gilead´s

Chief Executive Officer. He is assuming the additional role of Chairman

of the Board from James M. Denny, who will remain a member of Gilead´s

Board of Directors, serving as lead director. Mr. Denny joined Gilead´s

Board in 1996 and was appointed Chairman in 2001. Dr. Milligan will

continue to serve as Gilead´s Chief Operating

Officer, in addition to his new role of President.
"I have had the honor of serving as the

Chairman of Gilead´s Board of Directors for

the past seven years and the opportunity to observe the leadership and

vision that John Martin and John Milligan both bring to Gilead," commented Mr. Denny. "I look forward to

working with them in their new roles as they continue to guide Gilead´s

efforts to bring novel therapies to patients affected by

life-threatening diseases around the world."
Dr. Martin joined Gilead in 1990 and was appointed President and Chief

Executive Officer in 1996. Prior to joining Gilead, Dr. Martin held

several leadership positions in the antiviral chemistry division at

Bristol-Myers Squibb and served for six years with Syntex Corporation

from 1978 until 1984. He is a member of the Presidential Advisory

Council on HIV/AIDS, the Board of Directors of Gen-Probe Incorporated

and the Board of Directors of the California Healthcare Institute.
Dr. Martin holds a PhD in organic chemistry from the University of

Chicago and an MBA in marketing from Golden Gate University.
Dr. Milligan also joined Gilead in 1990, beginning his career at the

company as a Research Scientist. He has held leadership roles in Project

Management and Corporate Development. In 2002, Dr. Milligan was

appointed Chief Financial Officer (CFO). He was named Chief Operating

Officer in 2007.
He holds a PhD in biochemistry from the University of Illinois and was

an American Cancer Society Postdoctoral fellow at the University of

California at San Francisco. Dr. Milligan was named "Bay

Area CFO of the Year" in 2006 for companies

with revenues greater than $500 million, and he was named the top

biotechnology industry CFO in the United States by Institutional

Investor magazine in 2006, 2007 and 2008.
About Gilead Sciences
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.
This press release includes forward-looking statements, within the

meaning of the Private Securities Litigation Reform Act of 1995, that

are subject to risks, uncertainties and other factors, including risks

related to Gilead´s ability to develop and

deliver novel therapies to patients. The reader is cautioned not to rely

on these forward-looking statements. These and other risks are described

in detail in the Gilead Annual Report on Form 10-K for the year ended

December 31, 2007 as filed with the U.S. Securities and Exchange

Commission. All forward-looking statements are based on information

currently available to Gilead and Gilead assumes no obligation to update

any such forward-looking statements.
For more information on Gilead Sciences, please visit the company´s

website at www.gilead.com or call

Gilead Public Affairs at 1-800-GILEAD-5 or 1-650-574-3000.