Gilead Sciences to Release First Quarter Financial Results on Wednesday, April 23, 2003; Conference Call and Webcast to Follow

FOSTER CITY, Calif.--(BUSINESS WIRE)--April 18, 2003--Gilead Sciences, Inc. (Nasdaq: GILD) announced today that its first quarter financial results will be released on Wednesday, April 23, 2003, at 4:00 p.m. Eastern Time. At 4:30 p.m. 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, Mark Perry, Executive Vice President of Operations, and John Milligan, PhD, Senior Vice President and Chief Financial Officer.

To access the live call or the seven-day archive 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 view the webcast. Alternatively, please call 1-800-946-0741 (U.S.) or 1-719-457-2649 (international) to access the call. Telephone replay is available approximately two hours after the call through 8:30 p.m. EST, April 25, 2003. To access, please call 1-888-203-1112 (U.S.) or 1-719-457-0820 (international). The conference ID number is 522462.

Gilead Sciences is a biopharmaceutical company that discovers, develops and commercializes therapeutics to advance the care of patients suffering from life-threatening diseases worldwide. The company has six marketed products and focuses its research and clinical programs on anti-infectives, including antivirals, antifungals and antibacterials. Headquartered in Foster City, CA, Gilead has operations in the United States, Europe and Australia.

For more information on Gilead Sciences, please visit the company's web site at www.gilead.com or call the Gilead Public Affairs Department at 1-800-GILEAD-5 (1-800-445-3235).

    CONTACT: Gilead Sciences
             Susan Hubbard, 650/522-5715
             (Investor Relations)

    SOURCE: Gilead Sciences