Sanofi Genzyme

$35,055B in revenues in 2017

Acquired by Sanofi in 2011, Sanofi Genzyme continued its focus on rare diseases, but jumped into the area of multiple sclerosis, and expanded in 2016 into oncology and immunology. The company employs approximately 15,000 in the U.S. Sanofi has approximately 5,000 employees in Massachusetts. They are spread out through Allston, Cambridge, Framingham, Northborough, Waltham, and Westborough.