ImmunoGen(IMGN) - 2020 Q2 - Quarterly Report

Washington, D.C. 20549 FORM 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 0-17999 ImmunoGen, Inc. Massachusetts 04-2726691 (State or other jurisdiction of incorporation or organization) (I.R.S. Employ ...