Michael D. Loberg - Sep 30, 2021 Form 4 Insider Report for IGM Biosciences, Inc. (IGMS)

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IGMS	Common Stock	Gift	$0	-300	-100%	$0.00^*	0	Jul 8, 2021	Direct
transaction	IGMS	Common Stock	Gift	$0	+300	+2.36%	$0.00	13K	Jul 8, 2021	See footnote	F1
transaction	IGMS	Common Stock	Award	$0	+300		$0.00	300	Sep 30, 2021	Direct	F2
holding	IGMS	Common Stock						13K	Sep 30, 2021	See footnote	F3
holding	IGMS	Common Stock						29.5K	Sep 30, 2021	See footnote	F4

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

Id	Content
F1	As of July 8, 2021, the shares were held by the Revocable Deed of Trust of Michael D. Loberg (Michael and Melinda Loberg, Trustees), of which Reporting Person and his spouse serve as trustees (the "Loberg Revocable Trust"). As set forth in footnote (3), on August 23, 2021, 12,996 shares were transferred from the Loberg Revocable Trust to the Michael D. Loberg Qualified Annuity Interest Trust VIII (Michael and Melinda Loberg, Trustees), of which Reporting Person and his spouse serve as trustees (the "Loberg Annuity Trust VIII").
F2	Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. The amount reflects payment of a quarterly retainer in common stock pursuant to the Issuer's Outside Director Compensation Policy.
F3	The shares are held by the Loberg Annuity Trust VIII and reflect the transfer on August 23, 2021 of 12,996 shares from the Loberg Revocable Trust to the Loberg Annuity Trust VIII.
F4	The shares are held by the Michael D. Loberg Qualified Annuity Interest Trust VII (Michael and Melinda Loberg, Trustees), of which Reporting Person and his spouse serve as trustees.