Bruce Keyt - 30 Mar 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: 30 Mar 2022
Net transactions value: -$206,750
Form type: 4
Filing time: 01 Apr 2022, 20:16:47 UTC
Previous filing: 17 Mar 2022
Next filing: 08 Apr 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	$6,975	+7,500	+19%	$0.9300^*	47,515	30 Mar 2022	Direct	F1
transaction	IGMS	Common Stock	Sale	$213,725	-7,500	-16%	$28.50	40,015	30 Mar 2022	Direct	F1, F2
holding	IGMS	Common Stock						1,013	30 Mar 2022	See footnote	F3

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	-7,500	-5.2%	$0.000000	136,256	30 Mar 2022	Common Stock	7,500	$0.9300	Direct	F1, F4

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

Explanation of Responses:

Id	Content
F1	The option exercise and sale were effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person.
F2	This transaction was executed in multiple trades at prices ranging from $28.18 to $29.00. 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.
F3	The shares are held directly by the reporting person's spouse.
F4	The shares subject to the option are vested and exercisable as of the date hereof.