William D. Humphries

Bill has served as a member of PhaseBio’s board of directors since September 2021. He has more than 30 years of experience building and leading commercial-stage pharmaceutical organizations. Currently, he is the Chief Executive Officer of Isosceles Pharmaceuticals, a position he has held since May 2021. Prior to his role at Isosceles, Bill served as President of Ortho Dermatologics and President and Chief Executive Officer of the North American business of Merz, an affiliate of Merz Pharma Group. Before joining Merz, he served in a number of leadership positions with Stiefel Laboratories, including as its Chief Commercial Officer and then as President. In addition to the PhaseBio board of directors, Bill currently serves as the chairman of the board for Clearside Biomedical, chairman of the board for STRATA Skin Sciences, and as a director on the board of Aclaris Therapeutics. He received a BA from Bucknell University and an MBA from Pepperdine University.