Executive Leadership Team

Matthew Gantz, M.B.A.
President and Chief Executive Officer
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Mary Spellman, M.D., F.A.A.D.
Chief Medical Officer
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Joseph Lillegard, M.D., Ph.D.
Chief Scientific Officer
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Jeff Hesselberg, M.B.A.
Senior Vice President, Regulatory and Quality Affairs
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Katherine Reedy, M.B.A
Senior Vice President, Commercial
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Michael J. Maurer, M.S.
Vice President, Manufacturing
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Senior Leadership Team

Rob Kaiser, Ph.D., D.A.B.T
Vice President, Pre-Clinical Development

January McKee, Ph.D.
Associate Vice President, Process Sciences

Robin Blumenthal, Ph.D.
Associate Vice President, Clinical Operations

Tracy Rarick
Head of Program Management

Anthonius Kley
Senior Director, Facilities

Edward Russell, M.B.A.
Senior Director, Human Resources

Jeremy Cress
Senior Director, External Manufacturing and Technology

Matthew Crabtree
Senior Director, Finance

Tymissha Jackson, M.S., RAC
Senior Director, Regulatory Affairs

Jeff Aronin
Castle Creek Biosciences Founder and Chairman
Paragon Biosciences Founder, Chairman and C.E.O.
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