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Filing Details

Accession Number:: 0000950170-23-070836
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2023-12-15 17:32:35
Reporting Period:: 2023-12-13

Accepted Time:: 2023-12-15 17:32:35
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1496323	Igm Biosciences Inc.	IGMS	()	4

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1087939	Julian Baker	860 Washington Street, 3Rd Floor New York NY 10014	No	No	No	No
1087940	Felix Baker	860 Washington Street, 3Rd Floor New York NY 10014	No	No	No	No
1263508	Baker Bros. Advisors Lp	860 Washington Street, 3Rd Floor New York NY 10014	No	No	No	No
1363364	Baker Brothers Life Sciences Lp	860 Washington Street, 3Rd Floor New York NY 10014	No	No	No	No
1551139	667, L.p.	860 Washington Street, 3Rd Floor New York NY 10014	No	No	No	No
1580575	Baker Bros. Advisors (Gp) Llc	860 Washington Street, 3Rd Floor New York NY 10014	No	No	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2023-12-13	769	$5.76	275,329	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-13	9,649	$5.76	2,906,617	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-13	5,679	$5.99	281,008	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-13	71,219	$5.99	2,977,836	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-14	11,621	$6.50	292,629	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-14	145,749	$6.50	3,123,585	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-15	15	$6.36	292,644	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-15	185	$6.36	3,123,770	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-15	4,188	$6.37	296,832	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-15	52,528	$6.37	3,176,298	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-15	17,066	$6.60	313,898	No	4	P	Indirect	See Footnotes
Common Stock	Acquisiton	2023-12-15	214,025	$6.60	3,390,323	No	4	P	Indirect	See Footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes
No	4	P	Indirect	See Footnotes

Footnotes

The price reported in Column 4 is a weighted average price. These shares of voting common stock ("Common Stock") of IGM Biosciences, Inc. (the "Issuer") were traded by 667, L.P. ("667") and Baker Brothers Life Sciences, L.P. ("Life Sciences", and together with 667, the "Funds") in multiple transactions at prices ranging from $5.60 to $5.80, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission (the "Staff"), upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
After giving effect to the transaction reported herein and as a result of their ownership interest in (i) Baker Biotech Capital, L.P. and (ii) 667, Julian C. Baker and Felix J. Baker each may be deemed to have an indirect pecuniary interest in Common Stock reported in column 5 of Table I held directly by or held for the benefit of 667, a limited partnership of which the sole general partner is Baker Biotech Capital, L.P., a limitedpartnership of which the sole general partner is Baker Biotech Capital (GP), LLC, due to their interest in 667 and Baker Biotech Capital, L.P.'s right to receive an allocation of a portion of the profits from 667.
Baker Bros. Advisors LP (the "Adviser") serves as the investment adviser to the Funds. In connection with the services provided by the Adviser, the Adviser receives an asset-based management fee that does not confer any pecuniary interest in the securities held directly by the Funds or for the benefit for Funds. The Adviser GP is the Adviser's sole general partner. Julian C. Baker and Felix J. Baker are managing members of theAdviser GP. The Adviser has complete and unlimited discretion and authority with respect to the investment and voting power of the securities held directly by the Funds or for the benefit of the Funds. The general partners of the Funds relinquished to the Adviser all discretion and authority with respect to the investment and voting power of the securities held directly by the Funds or for the benefit of the Funds.
Julian C. Baker, Felix J. Baker, the Adviser GP and the Adviser disclaim beneficial ownership of the securities held directly by the Funds or for the benefit of the Funds except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that any of Julian C. Baker, Felix J. Baker, the Adviser GP or the Adviser is a beneficial owner of such securities for purposes of Section 16 or any other purpose.
Includes beneficial ownership of 1,662 shares previously issued to Felix J. Baker pursuant to the Stock Incentive Plan in lieu of director retainer fees in his capacity as a director and 892 shares of Common Stock previously issued to Dr. Kelvin Neu, a former employee of the Adviser, pursuant to the Stock Incentive Plan in lieu of director retainer fees and 11,210 shares of Common Stock received previously from the exercise of 11,210 non-qualified options exercisable solely into Common Stock ("Stock Options") that were issued to Dr. Neu in his previous capacity as a director of the Issuer, of which the Funds are deemed to own a portion.
Pursuant to the policies of the Adviser, Felix J. Baker does not have any right to any of the Issuer's securities issued as compensation for his service on the Board and Dr. Neu, a former employee of the Advisor does not have any right to any of the Issuer's securities issued as compensation for his previous service on the Board and the Funds are entitled to an indirect proportionate pecuniary interest in the Stock Options and restricted stock units (each an "RSU"). Solely as a result of their ownership interest in (i) the general partners of the Funds and (ii) the Funds, Felix J. Baker and Julian C. Baker may be deemed to have an indirect pecuniary interest in the Stock Options, RSUs and any Common Stock acquired upon the exercise of Stock Options or vesting of RSUs (i.e. no direct pecuniary interest).
Pursuant to the policies of the Adviser, the Adviser has voting and dispositive power over the Common Stock received in lieu of director retainer fees, Stock Options, RSUs and any Common Stock received as a result of the exercise of Stock Options or vesting of RSUs.
After giving effect to the transaction reported herein and as a result of their ownership interest in (i) Baker Brothers Life Sciences Capital, L.P.and (ii) Life Sciences, Julian C. Baker and Felix J. Baker each may be deemed to have an indirect pecuniary interest in Common Stock reportedin column 5 of Table I held directly by or held for the benefit of Life Sciences, a limited partnership of which the sole general partner is BakerBrothers Life Sciences Capital, L.P., a limited partnership of which the sole general partner is Baker Brothers Life Sciences Capital (GP), LLC,due to their interest in Life Sciences and Baker Brothers Life Sciences Capital, L.P.'s right to receive an allocation of a portion of the profits fromLife Sciences.
The price reported in Column 4 is a weighted average price. These shares were traded by 667 and Life Sciences in multiple transactions at prices ranging from $5.67 to $6.25, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, or the Staff, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
The price reported in Column 4 is a weighted average price. These shares were traded by 667 and Life Sciences in multiple transactions at prices ranging from $6.35 to $6.56, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, or the Staff, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
The price reported in Column 4 is a weighted average price. These shares were traded by 667 and Life Sciences in multiple transactions at prices ranging from $5.92 to $6.58, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer,or the Staff, upon request, full information regarding the number of shares traded at each separate price within the range set forth in thisfootnote.