![Willem P. C. Stemmer](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Willem P.
C.
Stemmer was the founder of Maxygen, Inc. (1997), Versartis, Inc. (2008), Amunix Pharmaceuticals, Inc. (2006), and Amunix, Inc. (2006) where he held the title of Chairman at Amunix, Inc. from 2012 to 2013.
Stemmer also held former positions as a Research Scientist at Hybritech, Inc. and a Scientist at Affymax, Inc. Stemmer earned a doctorate degree from the University of Wisconsin.
Dr. Stemmer is also the founder of Avidia, Inc...
| Companies | Position | End |
|---|---|---|
Avidia, Inc.
 Avidia, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical products | Founder | 2009-01-08 |
Amunix Pharmaceuticals, Inc.
 Amunix Pharmaceuticals, Inc. BiotechnologyHealth Technology Develops transformative T cell engagers (TCEs) and cytokine therapies for patients with cancer | Founder | - |
Maxygen, Inc.
 Maxygen, Inc. Miscellaneous Commercial ServicesCommercial Services Develops directed molecular evolution technology | Founder | - |
Hybritech, Inc.
 Hybritech, Inc. Miscellaneous Commercial ServicesCommercial Services Provides prostate diagnostic testing services | Corporate Officer/Principal | - |
| AFFYMAX, INC. | Corporate Officer/Principal | - |
Active
Inactive
Listed companies
Private companies
| Private companies | 8 |
|---|---|
Hybritech, Inc.
Hybritech, Inc. Miscellaneous Commercial ServicesCommercial Services Provides prostate diagnostic testing services | Commercial Services |
Maxygen, Inc.
Maxygen, Inc. Miscellaneous Commercial ServicesCommercial Services Develops directed molecular evolution technology | Commercial Services |
Avidia, Inc.
Avidia, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical products | Health Technology |
Affymax, Inc.
 Affymax, Inc. BiotechnologyHealth Technology Develops and distributes pharmaceutical products | Health Technology |
University of Wisconsin
 University of Wisconsin Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Versartis, Inc.
 Versartis, Inc. Pharmaceuticals: MajorHealth Technology Develops therapeutic proteins for the treatment of metabolic diseases and endocrine disorders | Health Technology |
Amunix, Inc.
 Amunix, Inc. Pharmaceuticals: MajorHealth Technology Develops protein pharmaceuticals | Health Technology |
Amunix Pharmaceuticals, Inc.
Amunix Pharmaceuticals, Inc. BiotechnologyHealth Technology Develops transformative T cell engagers (TCEs) and cytokine therapies for patients with cancer | Health Technology |
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