Menu EXECUTIVE COMMITTEE We are committed to helping people live a life uninterrupted by making progress with purpose every day. Senior Vice President and Chief Financial Officer SUSAN ALTSCHULLER, PHD Senior Vice President and Chief Human Resources Officer AUDREY BERGAN Senior Vice President, Chief Medical Officer ANNA BERKENBLIT, MD, MMSC Senior Vice President, Chief Business Officer STACY COEN President and Chief Executive Officer MARK ENYEDY Senior Vice President and Chief Commercial Officer KRISTEN HARRINGTON-SMITH Vice President, Technical Operations ROBERT HERBST, PHD Vice President, Acting General Counsel and Intellectual Property JOSEPH J. KENNY, PHD, JD Senior Vice President, Regulatory Affairs and Quality THERESA WINGROVE, PHD CONTACT US PRIVACY POLICY USAGE POLICY © 2021 ImmunoGen, Inc., All Rights Reserved ImmunoGen, the ImmunoGen logos, and TARGET A BETTER NOW are trademarks or registered trademarks of ImmunoGen, Inc.

Menu OUR CULTURE Simply put, our culture is the ultimate reflection of who we are, what we do, and how we target a better now. It grows and evolves with us because how we do our jobs is just as important as what we do. PATIENTS ARE PEOPLE FIRST Because diseases and statistics don’t have lives to live, but people do. We don’t classify people with cancer as patients because we won’t let them be defined by their disease. Instead, we focus on individuals and their personal journeys. We work with determination and never settle so that people can live a life uninterrupted. PROGRESS WITH PURPOSE Because thoughtful innovation can lead to more good days. We have the chance to do something truly meaningful here. Our purpose outweighs our fear of failure, and grounds everything we do. Doing things the way they’ve always been done won’t get us any closer to our goals. We work together strategically to achieve our unified vision, embrace change, and relentlessly innovate. IT’S UP TO US Because accomplishing our vision requires each of us to step up. Our cause demands individual ownership. We surpass expectations, strive for efficiency, and trust others to do the same. And let’s be super clear on this point: no matter where we sit, we are all expected to lead. WE’RE IN IT TOGETHER Because marching to the same drum beat can move mountains. We’re a diverse, driven crew brought together by our desire to target cancer cells where they live. That makes us one big, bold, ambitious family. And that means we go above and beyond to have each other’s backs. We celebrate our wins. We learn from failure. We never rest on our laurels. CAREERS LEARN MORE CONTACT US PRIVACY POLICY USAGE POLICY © 2021 ImmunoGen, Inc., All Rights Reserved ImmunoGen, the ImmunoGen logos, and TARGET A BETTER NOW are trademarks or registered trademarks of ImmunoGen, Inc.