Sean O’Brien

Site Head and Senior Vice President, San Diego Operations

Sean O’Brien is responsible for leading and managing all site operations. He oversees analytical method and process development; clinical and commercial cGMP manufacturing; environmental health and safety; facilities, and materials management. Sean and his team manufacture toxicology through commercial phases.

With over 20 years of experience in the Pharmaceutical Industry, Sean has previously held roles with progressively increasing scope and responsibility at Amgen and Alexion Pharmaceuticals as Director of Manufacturing before progressing to Executive Director and Site Lead, Dublin, Ireland.

Sean has extensive experience in leading organizations and driving business and network improvements to transform business units. He has overseen new product introductions, regulatory approvals, enterprise resource planning system implementations, capital projects, and the creation of robust safety and compliance cultures.

Sean holds a B.A from Hobart and William Smith Colleges, Geneva, NY and an MBA from San Francisco State University, CA, USA. Prior to joining the pharmaceutical industry Sean served as logistics officer in the United States Marine Corps.

Michelle Detwiler

Board Member

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Troy Wright

Senior Vice President and Global Head of Quality

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Thomas Castellano

Chief Financial Officer (CFO)

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