EX-24 2 attachment1.htm EX-24 DOCUMENT
                                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 2nd day of August, 2021.

      					CHRIS H. TAKIMOTO

      					/s/ Chris H. Takimoto