0001209191-21-054913.txt : 20210903 0001209191-21-054913.hdr.sgml : 20210903 20210903202308 ACCESSION NUMBER: 0001209191-21-054913 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210901 FILED AS OF DATE: 20210903 DATE AS OF CHANGE: 20210903 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Keyt Bruce CENTRAL INDEX KEY: 0001787362 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39045 FILM NUMBER: 211238021 MAIL ADDRESS: STREET 1: 325 E. MIDDLEFIELD ROAD CITY: MOUNTAIN VIEW STATE: CA ZIP: 94043 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 2021-09-01 0 0001496323 IGM Biosciences, Inc. IGMS 0001787362 Keyt Bruce C/O IGM BIOSCIENCES, INC. 325 E. MIDDLEFIELD ROAD MOUNTAIN VIEW CA 94043 0 1 0 0 Chief Scientific Officer Common Stock 2021-09-01 4 M 0 2500 0.93 A 5557 D Common Stock 2021-09-01 4 F 0 1256 71.79 D 4301 D Common Stock 2021-09-03 4 S 0 1244 70.6851 D 3057 D Common Stock 1013 I See footnote Stock Option (right to buy) 0.93 2021-09-01 4 M 0 2500 0.00 D 2025-03-10 Common Stock 2500 5264 D The option exercise and sale were effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person. Represents shares withheld by the Issuer to pay the exercise price and taxes pursuant to the "net exercise" of 2,500 option shares. This transaction was executed in multiple trades at prices ranging from $70.02 to $71.59. The price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price. The shares are held directly by the reporting person's spouse. The shares subject to the option are vested and exercisable as of the date hereof. /s/ Misbah Tahir, by power of attorney 2021-09-03