Sec Form 3 Filing - Ashiya Mona @ Yarrow Bioscience, Inc. - 2026-07-27

FORM 3 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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Ashiya Mona 2. Issuer Name and Ticker or Trading Symbol Yarrow Bioscience, Inc. [ YARW] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O YARROW BIOSCIENCE, INC., 470 JAMES STREET, SUITE 007 3. Date of Earliest Transaction (MM/DD/YY) 07/27/2026 (Street) NEW HAVEN, CT06513 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 233,019 ( 1 ) ( 2 ) I See footnote ( 3 ) ( 5 ) Common Stock 33,287 ( 1 ) ( 2 ) I See footnote ( 4 ) ( 5 )

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Pre-Funded Warrants (right to buy) $ 0.0001 07/27/2026 ( 6 ) Common Stock 4,084,827 I See footnote ( 3 ) ( 5 ) Pre-Funded Warrants (right to buy) $ 0.0001 07/27/2026 ( 6 ) Common Stock 583,545 I See footnote ( 4 ) ( 5 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ashiya Mona C/O YARROW BIOSCIENCE, INC. 470 JAMES STREET, SUITE 007 NEW HAVEN, CT06513 X Signatures /s/ Tyler Zeronda, as attorney-in-fact for Mona Ashiya 07/29/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Effective as of July 27, 2026 (the "Effective Time"), a wholly owned subsidiary of VYNE Therapeutics Inc. ("VYNE") merged with and into Yarrow Bioscience, Inc. ("Yarrow") with Yarrow continuing as a wholly owned subsidiary of VYNE and the surviving corporation of the merger (the "Merger") under the name "Yarrow Bioscience Operating Company Corp." In connection with the completion of the Merger, VYNE changed its name to "Yarrow Bioscience, Inc." (hereinafter, the "Issuer"). ( 2 )Represents the number of shares of common stock, par value $0.0001, of the Issuer ("Issuer Common Stock") received by the entities listed below in the Merger in exchange for the shares of common stock of Yarrow ("Yarrow Common Stock") held by the entities listed below prior to the Merger. Each share of Yarrow Common Stock held at the Effective Time was exchanged for 0.7171 shares of Issuer Common Stock. ( 3 )These securities are held of record by OrbiMed Private Investments X, LP ("OPI X"). OrbiMed Capital GP X, LP ("GP X LP") is the general partner of OPI X. OrbiMed Capital GP X LLC ("GP X LLC") is the general partner of GP X LP. OrbiMed Advisors LLC ("OrbiMed Advisors"), a registered investment adviser under the Investment Advisers Act of 1940, as amended, is the managing member of GP X LLC. By virtue of such relationships, GP X, LP, GP X LLC and OrbiMed Advisors may be deemed to have voting and investment power with respect to the shares held by OPI X. OrbiMed Advisors exercises investment and voting power through a management committee comprised of Carl L. Gordon, Sven H. Borho and W. Carter Neild, each of whom disclaims beneficial ownership of the shares held by OPI X. ( 4 )These securities are held of record by OrbiMed Genesis Master Fund, L.P. ("Genesis Master Fund"). OrbiMed Genesis GP LLC ("Genesis GP") is the general partner of Genesis Master Fund. OrbiMed Advisors is the managing member of Genesis GP. By virtue of such relationships, Genesis GP and OrbiMed Advisors may be deemed to have voting and investment power with respect to shares held by Genesis Master Fund. OrbiMed Advisors exercises investment and voting power through a management committee comprised of Carl L. Gordon, Sven H. Borho and W. Carter Neild, each of whom disclaims beneficial ownership of the shares held by Genesis Master Fund. ( 5 )Each of the Reporting Person, OrbiMed Advisors, GP X LLC and Genesis GP disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a 1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Person, OrbiMed Advisors, GP X LLC or Genesis GP is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose. ( 6 )The Pre-Funded Warrants are exercisable at any time after the date of issuance, subject to a 9.99% beneficial ownership blocker. The Pre-Funded Warrants will expire once exercised in full.

Remarks: Exhibit 24 - Power of Attorney

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