George Scangos, President, Chief Executive Officer of Exelixis, Inc.,
Rings The NASDAQ Stock Market Opening Bell

Tuesday, December 5, 2006
at NASDAQ's MarketSite
in New York City.

Exelixis, Inc.

George Scangos, President, Chief Executive Officer of Exelixis, Inc., presides over the Opening bell.
Exelixis, Inc. is a development-stage biotechnology company dedicated to the discovery and development of novel small molecule therapeutics for the treatment of cancer and other serious diseases. The company is leveraging its fully integrated drug discovery platform to fuel the growth of its development pipeline, which is primarily focused on cancer. Currently, Exelixis' broad product pipeline includes investigational compounds in Phase II and Phase I clinical development for cancer and renal disease. Exelixis has established strategic corporate alliances with major pharmaceutical and biotechnology companies, including GlaxoSmithKline, Bristol-Myers Squibb Company, Genentech, Wyeth Pharmaceuticals and Sankyo. For more information, please visit the company's web site at www.exelixis.com.

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