Amgen Announces Webcast of Fourth Quarter and Full Year 2003 Financial Results

THOUSAND OAKS, Calif., Jan. 14-- Amgen Inc. (Nasdaq: AMGN), the world's largest biotechnology company, today announced that it would report fourth quarter and full year 2003 financial results on Thursday, January 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. PST.

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, then on Amgen Events. 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.

CONTACT: Amgen, Thousand Oaks

Sabrina Johnson, (805) 447-4587 (media)

Cary Rosansky, (805) 447-1060 (investors)