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    Amendment: SEC Form SCHEDULE 13G/A filed by GSR III Acquisition Corp.

    8/14/25 6:03:36 AM ET
    $GSRT
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    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13G


    UNDER THE SECURITIES EXCHANGE ACT OF 1934
    (Amendment No. 1)


    GSR III Acquisition Corp.

    (Name of Issuer)


    Class A ordinary shares, $0.0001 par value per share

    (Title of Class of Securities)


    G4R103107

    (CUSIP Number)


    06/30/2025

    (Date of Event Which Requires Filing of this Statement)


    Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
    Checkbox checked   Rule 13d-1(b)
    Checkbox not checked   Rule 13d-1(c)
    Checkbox not checked   Rule 13d-1(d)






    SCHEDULE 13G

    CUSIP No.
    G4R103107


    1Names of Reporting Persons

    Westchester Capital Management, LLC
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    136,057.00
    6Shared Voting Power

    380,080.00
    7Sole Dispositive Power

    136,057.00
    8Shared Dispositive Power

    380,080.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    516,137.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    2.2 %
    12Type of Reporting Person (See Instructions)

    IA

    Comment for Type of Reporting Person:  * Based on 23,422,500 Shares outstanding as of May 14, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 15, 2025.


    SCHEDULE 13G

    CUSIP No.
    G4R103107


    1Names of Reporting Persons

    Virtus Investment Advisers, LLC
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox not checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    380,080.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    380,080.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    380,080.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    1.62 %
    12Type of Reporting Person (See Instructions)

    IA

    Comment for Type of Reporting Person:  * Based on 23,422,500 Shares outstanding as of May 14, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 15, 2025. The amounts reported on this page are also included in the amounts reported by Westchester Capital Management, LLC on this Schedule 13G.


    SCHEDULE 13G

    CUSIP No.
    G4R103107


    1Names of Reporting Persons

    The Merger Fund
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox not checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    MASSACHUSETTS
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    352,805.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    352,805.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    352,805.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    1.51 %
    12Type of Reporting Person (See Instructions)

    IV

    Comment for Type of Reporting Person:  * Based on 23,422,500 Shares outstanding as of May 14, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 15, 2025. The amounts reported on this page are also included in the amounts reported by Virtus Investment Advisers, LLC on this Schedule 13G.


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    GSR III Acquisition Corp.
    (b)Address of issuer's principal executive offices:

    5900 Balcones Drive, Suite 100, Austin, Texas, 78731
    Item 2. 
    (a)Name of person filing:

    This statement is being filed jointly by the following (each, a "Reporting Person," and collectively, the "Reporting Persons"): Westchester Capital Management, LLC ("Westchester"), a Delaware limited liability company, Virtus Investment Advisers, LLC ("Virtus"), a Delaware limited liability company, and The Merger Fund ("MF"), a Massachusetts business trust. Virtus, a registered investment adviser, serves as the investment adviser to MF and The Merger Fund VL ("MF VL"). Westchester, a registered investment adviser, serves as sub-advisor to each of MF, MF VL and JNL Multi-Manager Alternative Fund ("JARB", together with MF and MF VL, the "Funds"). The Funds directly hold Ordinary Shares of the Company for the benefit of the investors in those Funds. Mr. Roy Behren and Mr. Michael T. Shannon each serve as Co-Presidents of Westchester.
    (b)Address or principal business office or, if none, residence:

    Westchester Capital Management, LLC 100 Summit Lake Drive, Valhalla, NY 10595 Virtus Investment Advisers, LLC One Financial Plaza, Hartford, CT 06103 The Merger Fund 101 Munson Street, Greenfield, MA 01301-9683
    (c)Citizenship:

    Each of Westchester and Virtus are organized under the laws of the State of Delaware. MF is organized under the laws of the State of Massachusetts.
    (d)Title of class of securities:

    Class A ordinary shares, $0.0001 par value per share
    (e)CUSIP No.:

    G4R103107
    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)Checkbox not checked   Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
    (b)Checkbox not checked   Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
    (c)Checkbox not checked   Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
    (d)Checkbox checked   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
    (e)Checkbox checked   An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
    (f)Checkbox not checked   An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
    (g)Checkbox not checked   A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
    (h)Checkbox not checked   A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
    (i)Checkbox not checked   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);
    (j)Checkbox not checked   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)Checkbox not checked   Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
     
    Item 4.Ownership
    (a)Amount beneficially owned:

    Westchester Capital Management, LLC: 516,137 Virtus Investment Advisers, LLC: 380,080 The Merger Fund: 352,805
    (b)Percent of class:

    Westchester Capital Management, LLC: 2.20% Virtus Investment Advisers, LLC: 1.62% The Merger Fund: 1.51%
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    Westchester Capital Management, LLC: 136,057 Virtus Investment Advisers, LLC: 0 The Merger Fund: 0

     (ii) Shared power to vote or to direct the vote:

    Westchester Capital Management, LLC: 380,080 Virtus Investment Advisers, LLC: 380,080 The Merger Fund: 352,805

     (iii) Sole power to dispose or to direct the disposition of:

    Westchester Capital Management, LLC: 136,057 Virtus Investment Advisers, LLC: 0 The Merger Fund: 0

     (iv) Shared power to dispose or to direct the disposition of:

    Westchester Capital Management, LLC: 380,080 Virtus Investment Advisers, LLC: 380,080 The Merger Fund: 352,805

    Item 5.Ownership of 5 Percent or Less of a Class.
     
    Checkbox checked    Ownership of 5 percent or less of a class
    Item 6.Ownership of more than 5 Percent on Behalf of Another Person.
     
    Not Applicable
    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
    Item 8.Identification and Classification of Members of the Group.
     
    Not Applicable
    Item 9.Notice of Dissolution of Group.
     
    Not Applicable

    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.

        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.

     
    Westchester Capital Management, LLC
     
    Signature:/s/ CaSaundra Wu
    Name/Title:CaSaundra Wu / Chief Compliance Officer
    Date:08/14/2025
     
    Virtus Investment Advisers, LLC
     
    Signature:/s/ Chetram Persaud
    Name/Title:Chetram Persaud / Chief Compliance Officer
    Date:08/14/2025
     
    The Merger Fund
     
    Signature:/s/ Daphne Chisolm
    Name/Title:Daphne Chisolm / Vice President, Counsel and Assistant Secretary
    Date:08/14/2025
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