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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13G
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UNDER THE SECURITIES EXCHANGE ACT OF 1934
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(Amendment No. 1)*
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Yarrow Bioscience, Inc. (Name of Issuer) |
Common Stock, par value $0.0001 (Title of Class of Securities) |
(CUSIP Number) |
07/31/2026 (Date of Event Which Requires Filing of this Statement) |
| Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |
 Rule 13d-1(b)
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| Rule 13d-1(c)
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 Rule 13d-1(d)
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SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Logos Global Management LP | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
286,308.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
10.7 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IA, PN |
Comment for Type of Reporting Person: The shares reported herein exclude prefunded warrants to acquire 2,201,030 shares of Common Stock, which are subject to a 9.99% beneficial ownership limitation. The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Logos Global Management GP LLC | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
286,308.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
10.7 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
HC, OO |
Comment for Type of Reporting Person: The shares reported herein exclude prefunded warrants to acquire 2,201,030 shares of Common Stock, which are subject to a 9.99% beneficial ownership limitation. The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Logos Global Master Fund LP | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
CAYMAN ISLANDS
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
176,678.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
6.6 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
PN |
Comment for Type of Reporting Person: The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Logos GP LLC | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
176,678.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
6.6 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
HC, OO |
Comment for Type of Reporting Person: The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Logos Opportunities Fund V LP | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
109,630.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
PN |
Comment for Type of Reporting Person: The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Logos Opportunities V GP LLC | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
109,630.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
HC, OO |
Comment for Type of Reporting Person: The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Arsani William | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
286,308.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
10.7 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
HC, IN |
Comment for Type of Reporting Person: The shares reported herein exclude prefunded warrants to acquire 2,201,030 shares of Common Stock, which are subject to a 9.99% beneficial ownership limitation. The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| CUSIP No. |
| 1 | Names of Reporting Persons
Graham Walmsley | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
UNITED STATES
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
109,630.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
HC, IN |
Comment for Type of Reporting Person: The percentage is calculated based on 2,669,788 shares of Common Stock outstanding on July 29, 2026, as reported in the Form 8-K filed by the Issuer on July 30, 2026.
SCHEDULE 13G
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| Item 1. | ||
| (a) | Name of issuer:
Yarrow Bioscience, Inc. | |
| (b) | Address of issuer's principal executive offices:
470 James Street, Suite 007, New Haven, CT 06513 | |
| Item 2. | ||
| (a) | Name of person filing:
Logos Global Management LP ("Logos Global")
Logos Global Management GP LLC ("Logos Global GP")
Logos Global Master Fund LP ("Global Fund")
Logos GP LLC ("Logos GP")
Logos Opportunities Fund V LP ("Opp V")
Logos Opportunities V GP LLC ("Opp V GP")
Arsani William
Graham Walmsley
Logos Global is a registered investment adviser and holds for the benefit of investment funds, including Global Fund and Opp V, in the ordinary course of business. Logos Global GP is the general partner of Logos Global. Logos GP is the general partner of Global Fund. Opp V GP is the general partner of Opp V. Dr. William is a control person of Logos Global, Logos Global GP and Logos GP. Dr. William and Dr. Walmsley are the control persons of Opp V GP.
The reporting persons are filing this statement jointly but not as members of a group, and they expressly disclaim membership in a group. Each reporting person disclaims beneficial ownership of Common Stock except to the extent of that person's pecuniary interest therein. In addition, the filing of this Schedule 13G on behalf of each of the Global Fund or Opp Fund V should not be construed as an admission that it is, and it disclaims that it is, a beneficial owner, as defined in Rule 13d-3 under the Act, of any Common Stock covered by this Schedule 13G. | |
| (b) | Address or principal business office or, if none, residence:
One Letterman Drive, Building C, Suite C3-350, San Francisco, California 94129 | |
| (c) | Citizenship:
See Item 4 of the cover sheet for each reporting person. | |
| (d) | Title of class of securities:
Common Stock, par value $0.0001 | |
| (e) | CUSIP No.:
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| Item 3. | If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: | |
| (a) | Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
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| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
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| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
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| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
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| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
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| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
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| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
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| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
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| (i) | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
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| (j) | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution: | |
| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
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| Item 4. | Ownership | |
| (a) | Amount beneficially owned:
Logos Global: 286,308
Logos Global GP: 286,308
Global Fund: 176,678
Logos GP: 176,678
Opp V: 109,630
Opp V GP: 109,630
Arsani William: 286,308
Graham Walmsley: 109,630 | |
| (b) | Percent of class:
Logos Global: 10.7%
Logos Global GP: 10.7%
Global Fund: 6.6%
Logos GP: 6.6%
Opp V: 4.1%
Opp V GP: 4.1%
Arsani William: 10.7%
Graham Walmsley: 4.1% %
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| (c) | Number of shares as to which the person has:
| |
| (i) Sole power to vote or to direct the vote:
Logos Global: 0
Logos Global GP: 0
Global Fund: 0
Logos GP: 0
Opp V: 0
Opp V GP: 0
Graham Walmsley: 0
Arsani William: 0 | ||
| (ii) Shared power to vote or to direct the vote:
Logos Global: 286,308
Logos Global GP: 286,308
Global Fund: 176,678
Logos GP: 176,678
Opp V: 109,630
Opp V GP: 109,630
Arsani William: 286,308
Graham Walmsley: 109,630 | ||
| (iii) Sole power to dispose or to direct the disposition of:
Logos Global: 0
Logos Global GP: 0
Global Fund: 0
Logos GP: 0
Arsani William: 0 | ||
| (iv) Shared power to dispose or to direct the disposition of:
Logos Global: 286,308
Logos Global GP: 286,308
Global Fund: 176,678
Logos GP: 176,678
Opp V: 109,630
Opp V GP: 109,630
Arsani William: 286,308
Graham Walmsley: 109,630 | ||
| Item 5. | Ownership of 5 Percent or Less of a Class. | |
| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. | |
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
Each of Global Fund and Opp V hold the Common Stock for the benefit of each of its respective investors and has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Stock. | ||
| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. | |
Not Applicable
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| Item 8. | Identification and Classification of Members of the Group. | |
Not Applicable
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| Item 9. | Notice of Dissolution of Group. | |
Not Applicable
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| Item 10. | Certifications: |
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. |
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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Exhibit Information
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EXHIBIT 99.1 AGREEMENT REGARDING JOINT FILING OF STATEMENT ON SCHEDULE 13D OR 13G |
EXHIBIT 99.1
AGREEMENT REGARDING JOINT FILING
OF STATEMENT ON SCHEDULE 13D OR 13G
The undersigned agree to file jointly with the Securities and Exchange Commission (the “SEC”) any and all statements on Schedule 13D, Schedule 13G or forms 3, 4 or 5 (and any amendments or supplements thereto) required under section 13(d) or 16(a) of the Securities Exchange Act of 1934, as amended, in connection with purchases by the undersigned of the securities of any issuer. For that purpose, the undersigned hereby constitute and appoint Logos Global Management LP, a Delaware limited partnership, as their true and lawful agent and attorney-in-fact, with full power and authority for and on behalf of the undersigned to prepare or cause to be prepared, sign, file with the SEC and furnish to any other person all certificates, instruments, agreements and documents necessary to comply with section 13(d) and section 16(a) of the Act, in connection with said purchases, and to do and perform every act necessary and proper to be done incident to the exercise of the foregoing power, as fully as the undersigned might or could do if personally present.
Dated: August 7, 2026
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/s/ Arsani William
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Logos Global Management LP |
Logos Global Master Fund LP
By Logos GP LLC, its General Partner
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Logos Global Management GP LLC
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Logos GP LLC
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/s/ Graham Walmsley
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Logos Opportunities Fund V LP |
Logos Opportunities V GP LLC
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