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    Amendment: SEC Form SCHEDULE 13G/A filed by Haymaker Acquisition Corp. 4

    4/8/26 5:35:01 PM ET
    $HYAC
    Get the next $HYAC alert in real time by email



    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13G


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


    Haymaker Acquisition Corp. 4

    (Name of Issuer)


    Class A

    (Title of Class of Securities)




    G4375F108

    (CUSIP Number)
    03/31/2026

    (Date of Event Which Requires Filing of this Statement)


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




    schemaVersion:


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Harraden Circle Investments, 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

    2,034,839.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    2,034,839.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    2,034,839.00
    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)

    8.69 %
    12Type of Reporting Person (See Instructions)

    OO, HC, IA


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Harraden Circle Investors GP, LP
    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

    2,034,839.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    2,034,839.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    2,034,839.00
    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)

    8.69 %
    12Type of Reporting Person (See Instructions)

    PN, HC


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Harraden Circle Investors GP, 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

    2,034,839.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    2,034,839.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    2,034,839.00
    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)

    8.69 %
    12Type of Reporting Person (See Instructions)

    OO, HC


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Harraden Circle Investors, LP
    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

    1,169,072.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    1,169,072.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,169,072.00
    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)

    4.99 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Harraden Circle Special Opportunities, LP
    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

    436,838.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    436,838.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    436,838.00
    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)

    1.86 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Harraden Circle Strategic Investments, LP
    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

    306,798.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    306,798.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    306,798.00
    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)

    1.31 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Harraden Circle Concentrated, LP
    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

    122,131.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    122,131.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    122,131.00
    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)

    0.52 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP Number(s):
    G4375F108


    1Names of Reporting Persons

    Frederick V. Fortmiller, Jr.
    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

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

    0.00
    6Shared Voting Power

    2,034,839.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    2,034,839.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    2,034,839.00
    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)

    8.69 %
    12Type of Reporting Person (See Instructions)

    IN, HC


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    Haymaker Acquisition Corp. 4
    (b)Address of issuer's principal executive offices:

    324 Royal Palm Way, Suite 300-I, Palm Beach, Florida 33480
    Item 2. 
    (a)Name of person filing:

    This Statement is filed on behalf of the following persons (collectively, the "Reporting Persons"): i) Harraden Circle Investments, LLC ("Harraden Adviser"); ii) Harraden Circle Investors GP, LP ("Harraden GP"); iii) Harraden Circle Investors GP, LLC ("Harraden LLC"); iv) Harraden Circle Investors, LP ("Harraden Fund"); v) Harraden Circle Special Opportunities, LP ("Harraden Special Op Fund"); vi) Harraden Circle Strategic Investments, LP ("Harraden Strategic Fund"); vii) Harraden Circle Concentrated, LP ("Harraden Concentrated Fund"); and viii) Frederick V. Fortmiller, Jr. ("Mr. Fortmiller") This Statement relates to Shares (as defined herein) directly beneficially owned by Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, and Harraden Concentrated Fund. Harraden GP is the general partner to Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, and Harraden Concentrated Fund, and Harraden LLC is the general partner of Harraden GP. Harraden Adviser serves as investment manager to Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, Harraden Concentrated Fund, and other high net worth individuals. Mr. Fortmiller is the managing member of each of Harraden LLC and Harraden Adviser. In such capacities, each of Harraden GP, Harraden LLC, Harraden Adviser and Mr. Fortmiller may be deemed to indirectly beneficially own the Shares reported herein directly beneficially owned by Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, and Harraden Concentrated Fund.
    (b)Address or principal business office or, if none, residence:

    885 Third Avenue, Suite 2600B, New York, NY 10022
    (c)Citizenship:

    Each of Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, Harraden Concentrated Fund, and Harraden GP is a Delaware limited partnership. Each of Harraden LLC and Harraden Adviser is a Delaware limited liability company. Mr. Fortmiller is a citizen of the United States of America.
    (d)Title of class of securities:

    Class A
    (e)CUSIP No.:

    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 not checked   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
    (e)Checkbox not 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:

    2,034,839
    (b)Percent of class:

    8.69  %
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    0

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

    2,034,839

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

    0

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

    2,034,839

    Item 5.Ownership of 5 Percent or Less of a Class.
     
    Not Applicable
    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.
     
    If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.


    See disclosure in Item 2 hereof.
    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 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.

     
    Harraden Circle Investments, LLC
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr., managing member
    Date:04/08/2026
     
    Harraden Circle Investors GP, LP
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner
    Date:04/08/2026
     
    Harraden Circle Investors GP, LLC
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr., managing member
    Date:04/08/2026
     
    Harraden Circle Investors, LP
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
    Date:04/08/2026
     
    Harraden Circle Special Opportunities, LP
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
    Date:04/08/2026
     
    Harraden Circle Strategic Investments, LP
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
    Date:04/08/2026
     
    Harraden Circle Concentrated, LP
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
    Date:04/08/2026
     
    Frederick V. Fortmiller, Jr.
     
    Signature:/s/ Frederick V. Fortmiller, Jr.
    Name/Title:Frederick V. Fortmiller, Jr.
    Date:04/08/2026
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