0002002635-23-000004.txt : 20231213 0002002635-23-000004.hdr.sgml : 20231213 20231213173304 ACCESSION NUMBER: 0002002635-23-000004 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20231213 DATE AS OF CHANGE: 20231213 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: IGM Biosciences, Inc. CENTRAL INDEX KEY: 0001496323 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 770349194 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-39045 FILM NUMBER: 231485072 BUSINESS ADDRESS: STREET 1: 325 E MIDDLEFIELD ROAD CITY: MOUNTAIN VIEW STATE: CA ZIP: 94043 BUSINESS PHONE: 650-965-7873 MAIL ADDRESS: STREET 1: 325 E MIDDLEFIELD ROAD CITY: MOUNTAIN VIEW STATE: CA ZIP: 94043 FORMER COMPANY: FORMER CONFORMED NAME: Palingen, Inc. DATE OF NAME CHANGE: 20100712 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Keyt Bruce CENTRAL INDEX KEY: 0001787362 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 325 E. MIDDLEFIELD ROAD CITY: MOUNTAIN VIEW STATE: CA ZIP: 94043 144 1 primary_doc.xml 144 0001787362 XXXXXXXX LIVE 0001496323 IGM Biosciences, Inc. 001-39045 325 E MIDDLEFIELD ROAD MOUNTAIN VIEW CA 94043 650-965-7873 Keyt Bruce Officer Common Stock Morgan Stanley Smith Barney LLC

200 W Civic Center Dr., 4th Floor Sandy UT 84070

10567 63084.99 32893673 12/13/2023 NASDAQ Common Stock 12/12/2023 Vesting of Restricted Stock Units - See Remarks Issuer N 10567 12/12/2023 N/A N Bruce Keyt

c/o IGM Biosciences, Inc. 325 E.Middleffield Road Mountain View CA 94043

Common Stock 11/27/2023 933 4720.24 Shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units. 12/13/2023 /s/ Bruce Keyt