0001964306-23-000262.txt : 20231106 0001964306-23-000262.hdr.sgml : 20231106 20231106180814 ACCESSION NUMBER: 0001964306-23-000262 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20231106 DATE AS OF CHANGE: 20231106 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: 231381039 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: Lentini Renee CENTRAL INDEX KEY: 0001838777 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 830 WINTER STREET CITY: WALTHAM STATE: MA ZIP: 02451 144 1 primary_doc.xml 144 0001838777 XXXXXXXX LIVE 0000855654 ImmunoGen, Inc. 000-17999 830 WINTER ST WALTHAM MA 02451 (781)895-0600 Lentini Renee Officer Common Stock Merrill Lynch

225 Liberty St Floor 37 New York NY 10281

219545 3356795.78 266264274 11/06/2023 NASDAQ Common Stock 11/06/2023 Exercise of employee stock options ImmunoGen, Inc. N 120528 11/06/2023 Broker assisted cashless exercise Common Stock 06/30/2023 Employee stock purchase plan program ImmunoGen, Inc. N 3195 06/30/2023 Cash Common Stock 12/30/2022 Employee stock purchase plan program ImmunoGen, Inc. N 1351 12/30/2022 Cash Common Stock 06/30/2022 Employee stock purchase plan program ImmunoGen, Inc. N 2509 06/30/2022 Cash Common Stock 12/31/2021 Employee stock purchase plan program ImmunoGen, Inc. N 1957 12/31/2021 Cash Common Stock 06/30/2021 Employee stock purchase plan program ImmunoGen, Inc. N 1683 06/30/2021 Cash Common Stock 12/31/2020 Employee stock purchase plan program ImmunoGen, Inc. N 3725 12/31/2020 Cash Common Stock 06/30/2020 Employee stock purchase plan program ImmunoGen, Inc. N 1531 06/30/2020 Cash Common Stock 12/31/2019 Employee stock purchase plan program ImmunoGen, Inc. N 2902 12/31/2019 Cash Common Stock 12/31/2018 Employee stock purchase plan program ImmunoGen, Inc. N 2455 12/31/2018 Cash Common Stock 09/12/2023 Cash exercise of employee stock options ImmunoGen, Inc. N 25141 09/12/2023 Cash Common Stock 08/03/2023 Cash exercise of employee stock options ImmunoGen, Inc. N 51033 08/03/2023 Cash Common Stock 03/18/2014 Cash exercise of employee stock options ImmunoGen, Inc. N 1535 03/18/2014 Cash Y 11/06/2023 Renee Lentini