Mark Enyedy has served as president and chief executive officer of lmmunoGen since 2016. Prior to joining ImmunoGen, he served in various executive capacities at Shire PLC from 2013 to 2016, including as executive vice president and head of corporate development from 2014 to 2016, where he led Shire’s strategy, M&A, and corporate planning functions and provided commercial oversight of Shire’s pre-Phase 3 portfolio. Prior to joining Shire, he served as chief executive officer and a director of Proteostasis Therapeutics, Inc., a biopharmaceutical company, from 2011 to 2013. Prior to joining Proteostasis, he served for 15 years at Genzyme Corporation, most recently as president of the transplant, oncology, and multiple sclerosis divisions. Mr. Enyedy holds a J.D. from Harvard Law School and practiced law prior to joining Genzyme. Mr. Enyedy is also a director of Akebia Therapeutics and The American Cancer Society of Eastern New England. Within the past five years, he also served as a director of Fate Therapeutics, Inc. and Keryx Biopharmaceuticals, Inc.