Bruce Keyt - 14 Dec 2022 Form 4 Insider Report for IGM Biosciences, Inc. (IGMS)

Role: Chief Scientific Officer
Signature: /s/ Misbah Tahir, by power of attorney
Issuer symbol: IGMS
Transactions as of: 14 Dec 2022
Net transactions value: +$23,250
Form type: 4
Filing time: 16 Dec 2022, 18:40:20 UTC
Previous filing: 28 Nov 2022
Next filing: 20 Dec 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IGMS	Common Stock	Options Exercise	$23,250	+25,000	+65%	$0.9300^*	63,612	14 Dec 2022	Direct
holding	IGMS	Common Stock						1,013	14 Dec 2022	See footnote	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)	Options Exercise	$0	-25,000	-43%	$0.000000	33,756	14 Dec 2022	Common Stock	25,000	$0.9300	Direct	F2

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

Explanation of Responses:

Id	Content
F1	The shares are held directly by the reporting person's spouse.
F2	The shares subject to the option are vested and exercisable as of the date hereof.