CORRECTING and REPLACING Exelixis Announces September 4 Webcast of Presentation at BioCentury's NewsMakers in the Biotech Industry Conference

First graph, second sentence of release should read: Mr. Karbe will discuss updates to the company’s development pipeline and corporate strategy (sted Dr. Scangos will discuss...)

The corrected release reads:

EXELIXIS ANNOUNCES SEPTEMBER 4 WEBCAST OF PRESENTATION AT BIOCENTURY'S NEWSMAKERS IN THE BIOTECH INDUSTRY CONFERENCE

Exelixis, Inc. (Nasdaq:EXEL) announced today that Frank Karbe, Executive Vice President and Chief Financial Officer of Exelixis, will present at BioCentury's NewsMakers in the Biotech Industry Conference at 11:00 a.m. ET/8:00 a.m. PT on Thursday, September 4, 2008. Mr. Karbe will discuss updates to the company’s development pipeline and corporate strategy.

The presentation will be webcast and may be accessed in the Event Calendar page under Investors on the Exelixis website at www.exelixis.com.

About Exelixis

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 3, phase 2, and phase 1 clinical development. Exelixis has established strategic corporate alliances with major pharmaceutical and biotechnology companies, including GlaxoSmithKline, Bristol-Myers Squibb, Genentech, Wyeth Pharmaceuticals, and Daiichi-Sankyo. For more information, please visit the company’s web site at www.exelixis.com.