0001964306-23-000279.txt : 20231116 0001964306-23-000279.hdr.sgml : 20231116 20231116170311 ACCESSION NUMBER: 0001964306-23-000279 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20231116 DATE AS OF CHANGE: 20231116 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: 231415400 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: Coen Stacy Ann CENTRAL INDEX KEY: 0001814150 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 11 RUSH POND RD CITY: LAKEVILLE STATE: MA ZIP: 02347 144 1 primary_doc.xml 144 0001814150 XXXXXXXX LIVE 0000855654 ImmunoGen, Inc. 000-17999 830 WINTER ST WALTHAM MA 02451 (781)895-0600 Coen Stacy Ann Officer Common Stock Merrill Lynch

225 Liberty St Floor 37 New York NY 10281

4100 65656.50 266264274 11/16/2023 NASDAQ Common Stock 11/16/2023 Exercise of employee stock options ImmunoGen, Inc. N 4100 11/16/2023 Broker assisted cashless exercise N Stacy Coen

830 WINTER ST WALTHAM MA 02451

Common Stock 11/15/2023 26286 420848.74 11/16/2023 08/10/2023 Stacy Coen