0001209191-21-017588.txt : 20210303 0001209191-21-017588.hdr.sgml : 20210303 20210303214252 ACCESSION NUMBER: 0001209191-21-017588 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210301 FILED AS OF DATE: 20210303 DATE AS OF CHANGE: 20210303 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Chen Daniel ShinYu CENTRAL INDEX KEY: 0001787681 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39045 FILM NUMBER: 21712376 MAIL ADDRESS: STREET 1: 325 E. MIDDLEFIELD ROAD CITY: MOUNTAIN VIEW STATE: CA ZIP: 94043 FORMER NAME: FORMER CONFORMED NAME: Chen Daniel Stewart DATE OF NAME CHANGE: 20190910 ISSUER: 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 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 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2021-03-01 0 0001496323 IGM Biosciences, Inc. IGMS 0001787681 Chen Daniel ShinYu C/O IGM BIOSCIENCES, INC. 325 E. MIDDLEFIELD ROAD MOUNTAIN VIEW CA 94043 0 1 0 0 Chief Medical Officer Common Stock 2021-03-01 4 M 0 1900 1.39 A 118418 D Common Stock 2021-03-01 4 F 0 676 92.44 D 117742 D Common Stock 2021-03-02 4 S 0 1224 90.25 D 116518 D Stock Option (right to buy) 1.39 2021-03-01 4 M 0 1900 0.00 D 2028-12-30 Common Stock 1900 345890 D The option exercise and sale were effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person. Ownership is corrected pursuant to an internal review of the Reporting Person's holdings. Represents shares withheld by the Issuer to pay the exercise price and taxes pursuant to the "net exercise" of 1,900 option shares. The option, originally for 361,090 shares, of which 15,200 shares have been exercised, vested as to 1/4 of the shares on August 1, 2019, and an additional 1/48 of the shares subject to the option shall vest monthly thereafter, subject to the Reporting Person remaining a service provider through each such date. /s/ Misbah Tahir, by power of attorney 2021-03-03