Nasdaq Changes the date of Gilead Sciences, Inc. Addition to the Nasdaq-100 Index

New York, N.Y.—October 2, 2001—Nasdaq has determined it will postpone the date of the addition of Gilead Sciences, Inc. (Nasdaq:GILD) to the Nasdaq-100 Index® (Nasdaq:NDX) to the beginning of trading Friday, October 5, 2001. Gilead was to be added to the Index on October 4, 2001 (as revised) however given the trading halt of Gilead in anticipation of the FDA Antiviral Drugs Advisory Committee hearing related to its New Drug Application for Viread(TM) on Wednesday, Nasdaq determined it is in the best interest of all parties involved to postpone the change. As a result, Exodus Communications, Inc. (Nasdaq: EXDSQ) will remain a component of the Nasdaq-100 Index until such change occurs.

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