Primary IR Contact

Amgen Investor Relations
Mailstop 28-1-C
One Amgen Center Drive
Thousand Oaks, CA 91320-1799
Tel: 805-447-1060
Fax: 805-499-0792
E-mail Investor Relations

Transfer Agent

American Stock Transfer and Trust Co.
59 Maiden Lane
New York, NY 10038
Tel: (212) 936-5100
Tel: (800) 937-5449