Onyx Pharmaceuticals To Present At Two Upcoming Healthcare Conferences

Jun. 06, 2006

EMERYVILLE, CALIF. — Onyx Pharmaceuticals, Inc. (Nasdaq: ONXX) today announced that it will present at two healthcare conferences in June.

Goldman Sachs Annual Global Healthcare Conference
Onyx will present at the Goldman Sachs Annual Global Healthcare Conference in Laguna Nigel, California, on June 13, 2006 at 9:15 a.m. Pacific Time. Interested parties may access a live webcast of the presentation at:
http://customer.talkpoint.com/GOLD006/061206a_cs/default.asp?entity=onyx

Pacific Growth Equities Life Sciences Growth Conference
Subsequently, Onyx will present at the Pacific Growth Equities Life Sciences Growth Conference in San Francisco, California, on June 14, 2006 at 10:30 a.m. Pacific Time. Interested parties may access a live webcast of the presentation at:
http://www.corporate-ir.net/ireye/confLobby.zhtml?ticker=ONXX&item_id=1315816

It is recommended that listeners log on 15 minutes early in order to register and download any necessary software. If you are unable to participate during either of the live webcasts, a recorded replay of the presentations will be available within 24 hours of the completion of the presentations. The replays will generally be available for one month following the presentation dates.

Onyx Pharmaceuticals is engaged in the development of novel cancer therapies that target the molecular basis of cancer. With its collaborators, the company is developing small molecule drugs, including Nexavar® (sorafenib) tablets with Bayer Pharmaceuticals Corporation. For more information about Onyx’s pipeline and activities, visit the company’s website at www.onyx-pharm.com.

Nexavar® (sorafenib) tablets is a registered trademark of Bayer Pharmaceuticals Corporation.

Contact Information

Media Contacts

Onyx Pharmaceuticals, Inc.

Contact via E-mail