POWER OF ATTORNEY
For Obtaining EDGAR Access Codes and Executing Forms 3, 4 and 5
Know all by these presents, that the undersigned hereby constitutes and
appoints each of Evan Kearns, Ryan Murr and Robert Phillips, and any of their
substitutes, signing singly, as the undersigned's true and lawful attorney-in-
fact to:
(1) execute for and on behalf of the undersigned all forms necessary to
revive or obtain new EDGAR Access Codes for the undersigned,
including without limitation, PMAC, CCC and passwords necessary to
enable the undersigned to make filings in the United States
Securities and Exchange Commission's EDGAR system;
(2) execute for and on behalf of the undersigned Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities Exchange Act of
1934 and the rules thereunder, and any other forms or reports the
undersigned may be required to file, in connection with the
undersigned's ownership, acquisition, or disposition of securities
of Cogent Biosciences, Inc., a Delaware corporation;
(3) do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete the
execution of any such Form 3, 4 and 5, or other form or report,
complete and execute any amendment or amendments thereto, and the
timely filing of such form with the United States Securities and
Exchange Commission and any other authority; and
(4) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of
benefit to, in the best interest of, or legally required by, the
undersigned, it being understood that the documents executed by
such attorney-in-fact on behalf of the undersigned pursuant to this
Power of Attorney shall be in such form and shall contain such
terms and conditions as such attorney-in-fact may approve in
his/her discretion.
The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform all and every act and thing whatsoever
requisite, necessary and proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as such
attorney-in-fact might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or his/her substitute or substitutes, shall lawfully do or
cause to be done by virtue of this power of attorney and the rights and powers
herein granted. The undersigned acknowledges that the foregoing attorneys- in-
fact, in serving in such capacity at the request of the undersigned, are not
assuming any of the undersigned's responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934.
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 Cogent
Biosciences, Inc., unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 14th day of February, 2022.
/s/ Todd Shegog
-------------------------------
Todd Shegog
