# EDGAR Filing Document

**Accession Number:** 0001622229
**File Stem:** 0000899243-23-005135
**Filing Date:** 2023-2
**Character Count:** 9887
**Document Hash:** 9bbd752765ea2ef44c6212e0578501a4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000899243-23-005135.hdr.sgml**: 20230215

**ACCESSION NUMBER**: 0000899243-23-005135

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20230213

**FILED AS OF DATE**: 20230215

**DATE AS OF CHANGE**: 20230215

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Robbins Andrew R
- **CENTRAL INDEX KEY:** 0001590157

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38443
- **FILM NUMBER:** 23635252

**MAIL ADDRESS:**
- **STREET 1:** C/O 3200 WALNUT ST
- **CITY:** BOULDER
- **STATE:** CO
- **ZIP:** 80301

**FORMER NAME:**
- **FORMER CONFORMED NAME:** Robbins Andrews R
- **DATE OF NAME CHANGE:** 20131025
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cogent Biosciences, Inc.
- **CENTRAL INDEX KEY:** 0001622229
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 465308248
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 275 WYMAN STREET
- **STREET 2:** 3RD FLOOR
- **CITY:** WALTHAM
- **STATE:** MA
- **ZIP:** 02451
- **BUSINESS PHONE:** 617-945-5576

**MAIL ADDRESS:**
- **STREET 1:** 275 WYMAN STREET
- **STREET 2:** 3RD FLOOR
- **CITY:** WALTHAM
- **STATE:** MA
- **ZIP:** 02451

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Unum Therapeutics Inc.
- **DATE OF NAME CHANGE:** 20180402

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Unum Therapeutics, Inc.
- **DATE OF NAME CHANGE:** 20141014

## Ex-24

```
<PRE>
                                POWER OF ATTORNEY

        Know all by these presents that the undersigned hereby constitutes and
appoints each of Evan D. 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.  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 document necessary or
    appropriate to obtain codes, passwords, and passphrases enabling the
    undersigned to make electronic filings with the SEC of reports require by
    the Securities Exchange Act of 1934 or any rule or regulation of the SEC;

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

3.  do and perform any and all acts for and on behalf of the undersigned which
    may be necessary or desirable to complete and execute any such Form 3, 4,
    or 5, complete and execute any amendment or amendments thereto, and timely
    file such form with the SEC and any securities exchange or similar
    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 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 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 also ratifies hereby any
action previously taken by each attorney-in-fact that would have been
authorized by this power of attorney if it has been in effect at the time such
action was taken. The undersigned acknowledges that each attorney-in-fact, in
serving in such capacity at the request of the undersigned, is 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
earliest to occur of (a) 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, (b) revocation by the undersigned in a signed
writing delivered to the foregoing attorneys-in- fact or (c) as to any
attorney-in-fact individually, until such attorney-in-fact is no longer
employed by the Company or its subsidiaries.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 15th day of February, 2023.

                                      /s/ Andrew R. Robbins
                                      -------------------------------
                                      Andrew R. Robbins
</PRE>
```

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Robbins Andrew R<br><sub>(Last) (First) (Middle)</sub><br>C/O COGENT BIOSCIENCES, INC.<br>275 WYMAN STREET, 3RD FLOOR<br><sub>(Street)</sub><br>WALTHAM, MA 02451<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-13 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_President and CEO_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Cogent Biosciences, Inc. [ COGT ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Stock Option (Right to Buy) | $13.63 | 2023-02-13 |  | A |  | 525000 |  | <sup>(1)</sup> | 2033-02-13 | Common Stock | 525000 | $0.00 | 525000 | D |  |

---

### Footnotes:

(1) This stock option shall vest in equal monthly installments over a four year period.

**Remarks:**
Exhibit 24 - Power of Attorney

**Signature:** /s/ Evan D. Kearns, Attorney-in-Fact  
**Date:** 2023-02-15

### Remarks:

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 4 (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.**