Other3

Yarrow Bioscience, Inc.

Total Value

$NaN

Filing Date

Jul 29, 2026

1 transactions

Trade Summary

On Jul 27, 2026, Ryder Steven, Chief Medical Officer, reported $NaN of Yarrow Bioscience, Inc. (YARW) across 1 transactions. The filing covers company securities and reflects balanced net activity of $NaN. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Insider Information

Name: Ryder Steven
Role: Chief Medical Officer
Location: NEW HAVEN, CT

Filing Details

Filing Date: Jul 29, 2026
Transaction Date: Jul 27, 2026
Accession Number: 0001104659-26-088353
Form Type: 3

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Footnotes

(F1)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").
(F2)Represents options to purchase shares of common stock, par value $0.0001, of the Issuer ("Issuer Common Stock") received by the Reporting Person in the Merger in exchange for options to purchase shares of common stock of Yarrow held by the Reporting Person prior to the Merger. At the Effective Time, the Issuer assumed each such Yarrow option, whether vested or unvested, and converted it into an option to purchase shares of Issuer Common Stock on the same terms and conditions as were in effect immediately prior to the Effective Time.
(F3)This option represents a right to purchase 228,330 shares of Issuer Common Stock, one quarter of which will vest on April 8, 2027, with the remaining three quarters vesting in equal monthly installments over the following three years, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF 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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Ryder Steven

(Last)

(First)

(Middle)

C/O YARROW BIOSCIENCE, INC.

470 JAMES STREET, SUITE 007

(Street)

NEW HAVEN

06513

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
07/27/2026

3. Issuer Name and Ticker or Trading Symbol
Yarrow Bioscience, Inc. [ YARW ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Medical Officer

5. If Amendment, Date of 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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Option (Right to Buy)	⁽¹⁾⁽²⁾⁽³⁾	04/17/2036	Common Stock	228,330	$6.19	D

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 options to purchase shares of common stock, par value $0.0001, of the Issuer ("Issuer Common Stock") received by the Reporting Person in the Merger in exchange for options to purchase shares of common stock of Yarrow held by the Reporting Person prior to the Merger. At the Effective Time, the Issuer assumed each such Yarrow option, whether vested or unvested, and converted it into an option to purchase shares of Issuer Common Stock on the same terms and conditions as were in effect immediately prior to the Effective Time.

3. This option represents a right to purchase 228,330 shares of Issuer Common Stock, one quarter of which will vest on April 8, 2027, with the remaining three quarters vesting in equal monthly installments over the following three years, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Tyler Zeronda, as attorney-in-fact for Steven Ryder	07/29/2026
	** Signature of Reporting Person	Date
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 5 (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.

Form 3 as rendered by the SEC from accession 0001104659-26-088353.

Yarrow Bioscience, Inc.

Trade Summary

Company Information

Insider Information

Filing Details

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Footnotes

SEC Form 3

SEC Filing

SEC Form 3