0000899243-21-048606.txt : 20211216 0000899243-21-048606.hdr.sgml : 20211216 20211216163017 ACCESSION NUMBER: 0000899243-21-048606 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20211215 FILED AS OF DATE: 20211216 DATE AS OF CHANGE: 20211216 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Humphrey Jeffrey CENTRAL INDEX KEY: 0001816944 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40499 FILM NUMBER: 211498132 MAIL ADDRESS: STREET 1: C/O CONSTELLATION PHARMACEUTICALS, INC. STREET 2: 215 FIRST STREET, SUITE 200 CITY: CAMBRIDGE STATE: MA ZIP: 02142 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Cyteir Therapeutics, Inc. CENTRAL INDEX KEY: 0001662244 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 455429901 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 128 SPRING STREET STREET 2: BUILDING A, SUITE 510 CITY: LEXINGTON STATE: MA ZIP: 02421 BUSINESS PHONE: 857-285-4140 MAIL ADDRESS: STREET 1: 128 SPRING STREET STREET 2: BUILDING A, SUITE 510 CITY: LEXINGTON STATE: MA ZIP: 02421 3 1 doc3.xml FORM 3 SUBMISSION X0206 3 2021-12-15 1 0001662244 Cyteir Therapeutics, Inc. CYT 0001816944 Humphrey Jeffrey 128 SPRING ST, BUILDING A, SUITE 510 LEXINGTON MA 02421 1 0 0 0 Exhibit List: Exhibit 24 - Power of Attorney By: /s/ Andrew Gengos, Attorney-in-Fact 2021-12-16 EX-24 2 attachment1.htm EX-24 DOCUMENT

                           LIMITED POWER OF ATTORNEY

     The undersigned hereby constitutes and appoints Andrew Gengos and David
Gaiero, and each of them individually, with full power of substitution, as the
undersigned's true and lawful attorney-in-fact to:

     (1)  prepare, execute in the undersigned's name and on the
          undersigned's behalf, and submit to the U.S. Securities and Exchange
          Commission (the "SEC") a Form ID, including amendments thereto, and
          any other documents necessary or appropriate to obtain codes and
          passwords enabling the undersigned to make electronic filings with the
          SEC of reports required by Section 16(a) of the Securities Exchange
          Act of 1934, as amended, or any rule or regulation of the SEC;

     (2)  execute for and on behalf of the undersigned, in the
          undersigned's capacity as officer and/or director of Cyteir
          Therapeutics, Inc. (the "Company"), Forms 3, 4, 5 and any Schedules
          13D or 13G in accordance with Section 16(a) of the Securities Exchange
          Act of 1934, as amended, and the rules thereunder;

     (3)  do and perform any and all acts for and on behalf of the
          undersigned that may be necessary or desirable to complete and execute
          any such Form 3, 4, or 5 or Schedule 13D or 13G, complete and execute
          any amendment or amendments thereto, and timely file such form with
          the SEC and any stock exchange or similar authority; and

     (4)  take any other action of any type whatsoever in connection with
          the foregoing that, in the opinion of each 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 each
          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 each such attorney-in-fact may approve in each such
          attorney-in-fact's discretion.

     The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that each such attorney-in-fact, or each
such attorney-in-fact's 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 each foregoing attorney-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, 5, and any Schedules 13D
or 13G 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 each foregoing attorney-in-fact.

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     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 5th day of December, 2021.


                                           /s/ Jeffrey Humphrey
                                       ------------------------------
                                       Name: Jeffrey Humphrey, M.D.