Thomas J. DesRosier, Esq.
Thomas J. DesRosier is the Executive Vice President, Chief Legal Officer and Secretary of Seres. He brings more than 30 years of experience in the biopharmaceutical industry. Prior to joining Seres, he served as Chief Legal and Administrative Officer at ARIAD Pharmaceuticals, and prior to that held the same position at Cubist Pharmaceuticals where he led the negotiation of the acquisition of Cubist by Merck. Previous to that, he served as Senior Vice President and General Counsel, North America of Sanofi, a position he assumed in 2011 after Sanofi acquired Genzyme Corporation, where he was Senior Vice President and Chief Legal Officer. Prior to his 12-year tenure at Genzyme, Mr. DesRosier held senior legal positions at Wyeth Pharmaceuticals, predecessor Genetic Institute, and E.I. DuPont de Nemours. He received his J.D. from Wake Forest University School of Law and his Bachelor of Arts in chemistry from the University of Vermont.