About
John Diekman, Ph.D. is a founder and Managing Partner of 5AM Ventures. Prior to founding 5AM, Diekman was a founder and Managing Director of Bay City Capital, a life sciences investment firm. Previously, Diekman was Chairman and CEO of Affymetrix, Inc, where he still serves as a Director. Diekman currently serves as Board Chairman of Ambrx and Phenomix as well as on the Boards of Directors of Ingenuity Systems, Marcadia, PhaseRx and Wildcat Discovery. He is also Vice-Chairman of Singapore’s Life Science Fund, Bio*One Capital. He was recently named a Trustee of Princeton University and is also former Trustee of The California Institute of Technology and The Scripps Research Institute, where he served as Chairman. Diekman holds a B.A. in Chemistry from Princeton University and a Ph.D. in Chemistry from Stanford University. Diekman is based in the Menlo Park, CA office.
Position in the VCSift Database
- • 15 investors at 5AM Ventures are tracked.
- • 226 investors hold the Founder & Managing Partner role in VCSift. John Diekman is one of them.
- • 557 investors are based in Menlo Park, California, United States.
Data sourced from 410,343 investor profiles. Updated June 2026.
Investment Focus
- Location
- Menlo Park, US
Contact Information
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