Amgen Announces Webcast of First Quarter Financial Results

THOUSAND OAKS, Calif--April 12, 2004--Amgen Inc. (Nasdaq:AMGN), the world's largest biotechnology company, today announced that it would report first quarter financial results on Thursday, April 22, 2004 after the financial markets close. The announcement will be followed by a conference call with the investment community at 2:00 p.m. PDT.

Participating in the call from Amgen will be Kevin Sharer, Chairman, Chief Executive Officer, and President, and other members of Amgen's senior management.

Live audio of the conference call will be simultaneously broadcast over the Internet and will be available to members of the news media, investors and the general public. The conference call is expected to last approximately one hour.

This event can be accessed by going to Amgen's Web site,, and clicking on Investors. A link to the Webcast is under the Events header. The event will be archived and available for replay for 72 hours after the event.

Amgen is a global biotechnology company that discovers, develops, manufactures and markets important human therapeutics based on advances in cellular and molecular biology.

EDITOR'S NOTE: An electronic version of this news release may be accessed via our Web site at Journalists and media representatives may sign up to receive all news releases electronically at time of announcement by filling out a short form in the Media section of the Web site.

CONTACT: Amgen, Thousand Oaks
Sabrina Johnson, 805-447-4587 (media)
Cary Rosansky, 805-447-1060 (investors)

SOURCE: Amgen Inc.