FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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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(Print or Type Responses)
1. Name and Address of Reporting Person *
Stern Jon Leland
   2. Issuer Name and Ticker or Trading Symbol
CohBar, Inc. [CWBR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Operating Officer
(Last)
(First)
(Middle)
1455 ADAMS DRIVE, SUITE 2050, MENLO BUSINESS PARK		 3. Date of Earliest Transaction (Month/Day/Year)
04/13/2018
(Street)

MENLO PARK, CA 94025		 4. If Amendment, Date 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
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 04/13/2018   X   6,982 D $ 0.5 589,982 D  
Common Stock               11,000 (1) I By Child A
Common Stock               11,000 (1) I By Child B

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Warrants (right to buy) $ 0.5 04/13/2018   X     6,982 01/09/2014   (2) Common Stock 6,982 (3) 0 D  
Warrants (right to buy) $ 5.3 04/13/2018   P   8,000   04/13/2018 03/29/2021 Common Stock 8,000 (4) 8,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Stern Jon Leland
1455 ADAMS DRIVE, SUITE 2050
MENLO BUSINESS PARK
MENLO PARK, CA 94025		   X     Chief Operating Officer  

Signatures

 /s/ Jeffrey F. Biunno, Attorney-in-fact for Jon Stern   04/16/2018
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Consists of previously reported shares directly beneficially owned by the reporting person.
(2) The warrants expire on the earlier to occur of January 9, 2019 or certain liquidation events.
(3) The subject warrant was issued pursuant to a Note and Warrant Purchase Agreement, dated January 9, 2014 (the "2014 Agreement"), between the issuer, the Reporting Person and the other note purchasers thereunder. Each Purchaser under the 2014 Agreement received a warrant to purchase 6,982 shares of common stock in connection with their purchases of $70,000 principal amount of zero interest convertible promissory notes.
(4) The subject warrant was issued pursuant to a Note and Warrant Purchase Agreement (the "2018 Agreement") between the Issuer and the Reporting Person. Purchasers under the 2018 Agreement received a warrant to purchase one share of common stock for each $5.00 original principal amount of the non-convertible unsecured promissory note purchased under the 2018 Agreement.

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