Seres Therapeutics appoints DesRosier, Thorell as co-CEOs

Seres Therapeutics (MCRB) announced the appointment of Thomas DesRosier and Marella Thorell as co-Chief Executive Officers. This appointment will follow the departure of Chief Executive Officer Eric Shaff on July 31, 2025, after a decade with the Company, to pursue a new professional opportunity. Shaff will continue to serve as a Director on the Seres Board. DesRosier and Thorell will retain responsibilities related to their roles as Chief Legal Officer and Chief Financial Officer, respectively.