Executive Profiles

Dr. William H. Rastetter, Ph.D., Chairman and Chief Executive Officer, was appointed chairman of the Board of Directors of the Company on May 22, 1996. He served as President and Chief Executive Officer of the Company from December 1986 until January 2002. He turned over the title of President to Bill Rohn in January 2002. Dr. Rastetter was also Chief Financial Officer from 1988 to 1993.

Dr. Rastetter has served as a Director of the Company since 1986. From 1984 to 1986, he was Director of Corporate Ventures at Genentech. From 1982 to 1984, Dr. Rastetter served in a scientific capacity at Genentech, directing the Biocatalysis and Chemical Sciences groups. From 1975 to 1982, he held various positions at the Massachusetts Institute of Technology. Dr. Rastetter received his Ph.D. in chemistry from Harvard University in 1975.

In addition, he serves as a Director on the boards of two companies: Argonaut Technologies, a privately held developer and supplier of automated chemistry instrumentation; and Illumina, Inc., a company that develops parallel, miniaturized and flexible biosensors. He also serves on Governor Gray Davis’ Bio-Science Council and on the Keck Graduate Institute of Applied Life Sciences as a Trustee. Dr. Rastetter is active in community service, particularly in biomedical trade organizations and advisory boards. In this capacity, he serves as a director of BIOCOM/San Diego, and the California Healthcare Institute (CHI).