Initial Statement of Beneficial Ownership (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

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(Print or Type Responses)

1. Name and Address of Reporting Person * Harraden Circle Investments, LLC 2. Date of Event Requiring Statement (Month/Day/Year) 04/08/2026 3. Issuer Name and Ticker or Trading Symbol Haymaker Acquisition Corp. 4 [HYAC] (Last) (First) (Middle) 885 3RD AVENUE, SUITE 2600B 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) NEW YORK, NY 10022 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) 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) Class A 4,902,989 I See Remarks

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Harraden Circle Investments, LLC 885 3RD AVENUE SUITE 2600B NEW YORK, NY 10022		X
Harraden Circle Investors GP, LP 885 THIRD AVE. SUITE 2600B NEW YORK, NY 10022		X
Harraden Circle Investors GP, LLC 885 THIRD AVE. SUITE 2600B NEW YORK, NY 10022		X
Harraden Circle Investors, LP 885 THIRD AVE. SUITE 2600B NEW YORK, NY 10022		X
Harraden Circle Special Opportunities, LP 885 THIRD AVE. SUITE 2600B NEW YORK, NY 10022		X
Harraden Circle Strategic Investments, LP 885 THIRD AVE. SUITE 2600B NEW YORK, NY 10022		X
Harraden Circle Concentrated, LP 885 THIRD AVE. SUITE 2600B NEW YORK, NY 10022		X
Fortmiller Frederick Vincent Jr. 885 THIRD AVE. SUITE 2600B NEW YORK, NY 10022		X

Signatures

HARRADEN CIRCLE INVESTMENTS, LLC, By: /s/ Frederick V. Fortmiller, Jr., Managing Member		04/08/2026
**Signature of Reporting Person		Date
HARRADEN CIRCLE INVESTORS GP, LP, By: HARRADEN CIRCLE INVESTORS GP, LLC, its general partner, By: /s/ Frederick V. Fortmiller, Jr., Title: Managing Member		04/08/2026
**Signature of Reporting Person		Date
HARRADEN CIRCLE INVESTORS GP, LLC, By: /s/ Frederick V. Fortmiller, Jr., Managing Member		04/08/2026
**Signature of Reporting Person		Date
HARRADEN CIRCLE INVESTORS, LP, By: HARRADEN CIRCLE INVESTORS GP, LP, its general partner, By: HARRADEN CIRCLE INVESTORS GP, LLC, its general partner, By: /s/ Frederick V. Fortmiller, Jr., Title: Managing Member		04/08/2026
**Signature of Reporting Person		Date
HARRADEN CIRCLE SPECIAL OPPORTUNITIES, LP, By: HARRADEN CIRCLE INVESTORS GP, LP, its general partner, By: HARRADEN CIRCLE INVESTORS GP, LLC, its general partner, By: /s/ Frederick V. Fortmiller, Jr., Title: Managing Member		04/08/2026
**Signature of Reporting Person		Date
HARRADEN CIRCLE STRATEGIC INVESTMENTS, LP, By: HARRADEN CIRCLE INVESTORS GP, LP, its general partner, By: HARRADEN CIRCLE INVESTORS GP, LLC, its general partner, By: /s/ Frederick V. Fortmiller, Jr., Title: Managing Member		04/08/2026
**Signature of Reporting Person		Date
HARRADEN CIRCLE CONCENTRATED, LP, By: HARRADEN CIRCLE INVESTORS GP, LP, its general partner, By: HARRADEN CIRCLE INVESTORS GP, LLC, its general partner, By: /s/ Frederick V. Fortmiller, Jr., Title: Managing Member		04/08/2026
**Signature of Reporting Person		Date
FREDERICK V. FORTMILLER, JR., /s/ Frederick V. Fortmiller, Jr.		04/08/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
Remarks: These ordinary shares of the Issuer ("Shares") are directly owned by Harraden Circle Investors, LP ("Harraden Fund"); Harraden Circle Special Opportunities, LP; ("Harraden Special Op Fund"); Harraden Circle Strategic Investments, LP ("Harraden Strategic Fund"); and Harraden Circle Concentrated, LP ("Harraden Concentrated Fund"). Harraden Circle Investors GP, LP ("Harraden GP") is the general partner to Harraden Fund, Harraden Special Op Fund, Harraden Stratetic Fund, and Harraden Concentrated Fund, and Harraden Circle Investors GP, LLC ("Harraden LLC") is the general partner of Harraden GP. Harraden Circle Investments, LLC ("Harraden Adviser") serves as investment manager to Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, Harraden Concentrated Fund. Frederick V. Fortmiller, Jr. ("Mr. Fortmiller") is the managing member of each of Harraden LLC and Harraden Adviser. Each of Harraden GP, Harraden LLC, Harraden Adviser, and Mr. Fortmiller disclaims beneficial ownership of the Shares reported herein except to the extent of his or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the Shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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