Lisa Lynn Decker - Apr 4, 2023 Form 4 Insider Report for IGM Biosciences, Inc. (IGMS)

Role: Chief Business 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, 09:37 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	+16.3K	+97.12%	$0.00	33K	Apr 4, 2023	Direct	F1

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	+32.5K		$0.00	32.5K	Apr 4, 2023	Common Stock	32.5K	$12.86	Direct	F2

* 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	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.