ImmunoGen, Inc. Employee Directory
Pharmaceutical ManufacturingIllinois, United States51-200 Employees
ImmunoGen, Inc. has about 135 employees across 3 continents, most of them in North America. By country, the largest groups are United States Of America (92%), Switzerland (2%) and India (1%). Biotechnology and Legal make up 32% of the profiles with a known department. ImmunoGen, Inc.'s workforce spans 13 departments. ImmunoGen, Inc.'s workforce fell 58% between July 2025 and July 2026.