0001964306-23-000142.txt : 20230803 0001964306-23-000142.hdr.sgml : 20230803 20230803170443 ACCESSION NUMBER: 0001964306-23-000142 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230803 DATE AS OF CHANGE: 20230803 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: ImmunoGen, Inc. CENTRAL INDEX KEY: 0000855654 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 042726691 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 000-17999 FILM NUMBER: 231141095 BUSINESS ADDRESS: STREET 1: 830 WINTER ST CITY: WALTHAM STATE: MA ZIP: 02451 BUSINESS PHONE: (781)895-0600 MAIL ADDRESS: STREET 1: 830 WINTER ST CITY: WALTHAM STATE: MA ZIP: 02451 FORMER COMPANY: FORMER CONFORMED NAME: IMMUNOGEN INC DATE OF NAME CHANGE: 19920703 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Enyedy Mark J CENTRAL INDEX KEY: 0001586965 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O FATE THERAPEUTICS, INC. STREET 2: 3535 GENERAL ATOMICS COURT, SUITE 200 CITY: SAN DIEGO STATE: CA ZIP: 92121 144 1 primary_doc.xml 144 0001586965 XXXXXXXX LIVE 0000855654 ImmunoGen, Inc. 000-17999 830 WINTER ST WALTHAM MA 02451 (781)895-0600 Enyedy Mark J Officer Director Common Stock Merrill Lynch

225 Liberty Street 37th Floor New York NY 10281

1020000 16938477.31 248943426 08/03/2023 NASDAQ Common Stock 08/03/2023 Exercise of employee stock options ImmunoGen, Inc. N 1020000 08/03/2023 Broker assisted cashless exercise N Mark Enyedy

830 WINTER ST WALTHAM MA 02451

Common Stock 08/02/2023 995157 17367363.38 08/03/2023 MARK J ENYEDY