SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
Schwarzer Fred

(Last) (First) (Middle)
C/O IGM BIOSCIENCES, INC.
325 E. MIDDLEFIELD ROAD

(Street)
MOUNTAIN VIEW CA 94043

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
09/17/2019
3. Issuer Name and Ticker or Trading Symbol
IGM Biosciences, Inc. [ IGMS ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
X Officer (give title below) Other (specify below)
CEO and President
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 196,718 D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy) (1) 12/21/2028 Common Stock 158,888 1.39 D
Stock Option (right to buy) (2) 02/18/2029 Common Stock 125,845 1.39 D
Explanation of Responses:
1. 89,374 of the shares subject to the option were vested and exercisable as of December 21, 2018 and an additional 1/48 of the shares subject to the option vest monthly thereafter on the first day of the month subject to Reporting Person remaining a service provider through each such date.
2. 1/48 of the shares subject to the option vest each month beginning on March 1, 2019, subject to Reporting Person remaining a service provider through each such date.
Remarks:
/s/ Misbah Tahir, by power of attorney 09/17/2019
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
POWER OF ATTORNEY 

The undersigned, as a Section 16 reporting person of IGM Biosciences, Inc. (the
"Company"), hereby constitutes and appoints Fred Schwarzer and Misbah Tahir, and
each of them, as the undersigned's true and lawful attorney-in-fact to:

1.	complete and execute Forms 3, 4 and 5 and other forms and all amendments
thereto as such attorney-in fact shall in his discretion determine to be
required or advisable pursuant to Section 16 of the Securities Exchange Act of
1934 (as amended) and the rules and regulations promulgated thereunder, or any
successor laws and regulations, as a consequence of the undersigned's ownership,
acquisition or disposition of securities of the Company; and

2.	do all acts necessary in order to file such forms with the Securities and
Exchange Commission, any securities exchange or national association, the
Company and such other person or agency as the attorneys-in-fact shall deem
appropriate. 

The undersigned hereby ratifies and confirms all that said attorneys-in-fact and
agents shall do or cause to be done by virtue hereof. The undersigned
acknowledges that the foregoing attorneys-in-fact, in serving in such capacity
at the request of the undersigned, are not assuming, nor is
 the Company
assuming, any of the undersigned's responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934 (as amended). This Power of Attorney shall
remain in full force and effect until the undersigned is no longer required to
file Forms 3, 4 and 5 with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the Company and the foregoing
attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 17th day of September, 2019.

FRED SCHWARZER

/S/ Fred Schwarzer