0001964306-23-000225.txt : 20230913 0001964306-23-000225.hdr.sgml : 20230913 20230913172156 ACCESSION NUMBER: 0001964306-23-000225 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230913 DATE AS OF CHANGE: 20230913 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: 231253528 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: Peterson Kristine CENTRAL INDEX KEY: 0001508596 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: AMARIN CORPORATION STREET 2: MYSTIC PACKER BLDG., 12 ROOSEVELT AVENUE CITY: MYSTIC STATE: CT ZIP: 06355 144 1 primary_doc.xml 144 0001508596 XXXXXXXX LIVE 0000855654 ImmunoGen, Inc. 000-17999 830 WINTER ST WALTHAM MA 02451 (781)895-0600 Peterson Kristine Director Common Stock Merrill Lynch

225 Liberty St Floor 37 New York NY 10281

10000 160754.13 248943426 09/13/2023 NASDAQ Common Stock 09/13/2023 Exercise of employee stock options ImmunoGen, Inc. N 10000 09/13/2023 Broker assisted cashless exercise Y 09/13/2023 06/11/2023 Kristine Peterson