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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1496323	Igm Biosciences Inc.	IGMS	Pharmaceutical Preparations (2834)	770349194

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1785882	Haldor Jakob Topsoe	C/O Igm Biosciences, Inc. 325 E. Middlefield Road Mountain View CA 94043		Yes	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2023-06-29	3,500	$9.10	78,144	No	4	P	Direct
Common Stock	Acquisiton	2023-06-30	3,500	$9.25	81,644	No	4	P	Direct
Common Stock	Acquisiton	2023-06-30	492	$0.00	82,136	No	4	A	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	P	Direct
No	4	P	Direct
No	4	A	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	10,400,564	Indirect	See footnote

Footnotes

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.
All shares are held directly by Topsoe Holding A/S. Jakob Haldor Topsoe, Christina Teng Topsoe, Anne Haugwitz-Hardenberg-Reventlow, Emil Oigaard, Thomas Schleicher and Birgitte Nielsen, members of the board of directors of Topsoe Holding A/S, may be deemed to share voting and investment power with respect to the shares reported herein and disclaim beneficial ownership of such shares, except to the extent of his or her pecuniary interest therein, if any.