Amgen Announces Webcast of Second Quarter Financial Results

THOUSAND OAKS, Calif.--(BUSINESS WIRE)--June 23, 2005--Amgen Inc. (Nasdaq:AMGN), the world's largest biotechnology company, today announced that it plans to report its second quarter financial results on Tuesday, July 19, 2005 after the close of the financial markets. The announcement will be followed by a conference call with the investment community at 2 p.m. Pacific Daylight Time.

Participating in the call from Amgen will be Kevin Sharer, chairman and chief executive officer, and other members of Amgen's senior management team.

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, including the question and answer session, is expected to last approximately one hour.

The webcast of the conference, as with other selected presentations regarding developments in Amgen's business given by management at certain investor and medical conferences, can be found on Amgen's Web site, www.amgen.com, under Investors. Information regarding presentation times, webcast availability and webcast links are noted on Amgen's Investor Relations Events Calendar. The webcast will be archived and available for replay 72 hours after the event.

About Amgen

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
Christine Cassiano, 805-447-4587 (media)
Arvind Sood, 805-447-1060 (investors)
www.amgen.com

SOURCE: Amgen Inc.