James N. Thomas, Ph.D.

James N. Thomas, Ph.D.

Chief Executive Officer   |  Founding Partner

As a founding partner and CEO, Jim is leveraging his extensive experience in biotechnology and scientific leadership to deliver the mission of Just. Over the course of his career, Jim’s passion has been to provide vital medicines to patients, and his vision for Just expands this to include patients worldwide.

Previously, Jim served as vice president of Process and Product Development within the Translational Sciences R&D organization at Amgen. In this role, he led the development and application of all process, analytical and formulation technologies used to manufacture both clinical and commercial large molecule products. He retired from Amgen in May of 2014 to found Just. Jim was first exposed to biotechnology as a postdoctoral fellow at MIT almost 35 years ago, then worked as a scientist and leader at Genentech, Immunex and Amgen. Over the course of his career, he has contributed to the advancement of many important therapeutics including Activase®, Vectibix®, Enbrel®, Prolia®/Xgeva® and Repatha™. Jim has built teams, departments and functions passionate about creating and using innovative technologies to deliver to the needs of patients, and he and his team at Just are continuing this important mission.

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