0001964306-23-000255.txt : 20231030 0001964306-23-000255.hdr.sgml : 20231030 20231030160751 ACCESSION NUMBER: 0001964306-23-000255 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20231030 DATE AS OF CHANGE: 20231030 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: 231360266 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: Goldberg Mark Alan CENTRAL INDEX KEY: 0001532475 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 128 SPRING STREET, SUITE 520 CITY: LEXINGTON STATE: MA ZIP: 02421 144 1 primary_doc.xml 144 0001532475 XXXXXXXX LIVE 0000855654 ImmunoGen, Inc. 000-17999 830 WINTER ST WALTHAM MA 02451 (781)895-0600 Goldberg Mark Alan Director Common Stock Merrill Lynch

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10000 150761.50 248943426 10/30/2023 NASDAQ Common Stock 10/30/2023 Exercise of stock options ImmunoGen, Inc. N 10000 10/30/2023 Broker assisted cashless exercise Y 10/30/2023 06/09/2023 Mark Goldberg