August 29, 2003
EXHIBIT 10
[LOGO OF AMGEN]
PERSONAL AND CONFIDENTIAL
August 29, 2003
Xxxxx X. Xxxxxxx, Ph.D., Chief Executive Officer
Tularik Inc.
0000 Xxxxxxxx Xxxx.
South San Francisco, CA 94010
Dear Xx. Xxxxxxx:
With respect to that certain Letter Agreement (“Letter Agreement”) dated February 11, 2003 and amended May 21, 2003 by Amgen Inc. and accepted by Tularik Inc., a copy of which is attached hereto, the date “July 1, 2003” set forth in Section 10 of the Letter Agreement is hereby extended to “January 1, 2004”. The Letter Agreement shall remain in full force and effect except as hereby amended.
| Sincerely,
| ||
| By: | /s/ Xxxxxxx X. Xxxxxx | |
| Name: |
Xxxxxxx X. Xxxxxx | |
| Its: |
Executive Vice President, Finance, Strategy and Communications and Chief Financial Officer | |
Accepted and Agreed to
As of the date first above written:
| TULARIK INC. | ||
| By: | /s/ Xxxxx X. Xxxxxxx | |
| Name: |
Xxxxx X. Xxxxxxx | |
| Its: |
Chief Executive Officer | |
