Bruce Keyt - Apr 4, 2023 Form 4 Insider Report for IGM Biosciences, Inc. (IGMS)

Role: Chief Scientific Officer
Signature: /s/ Fred Schwarzer, by power of attorney
Stock symbol: IGMS
Transactions as of: Apr 4, 2023
Transactions value $: $0
Form type: 4
Date filed: 4/6/2023, 09:41 PM
Previous filing: Mar 16, 2023
Next filing: Apr 20, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IGMS	Common Stock	Award	$0	+26.3K	+28.94%	$0.00	117K	Apr 4, 2023	Direct	F1
holding	IGMS	Common Stock						1.01K	Apr 4, 2023	See footnote	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	IGMS	Stock Option (right to buy)	Award	$0	+52.5K		$0.00	52.5K	Apr 4, 2023	Common Stock	52.5K	$12.86	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These securities are restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. One-fourth of the RSUs shall vest on March 12, 2024 and each one-year anniversary thereafter, provided that the Reporting Person remains a service provider through each vesting date.
F2	The shares are held directly by the Reporting Person's spouse.
F3	1/48 of the shares subject to the option shall vest on April 12, 2023 and each month thereafter, provided that the Reporting Person remains a service provider through each vesting date.