SEC FORM 3

SEC FORM 3SEC 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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1. Name and Address of Reporting Person^*

Harraden Circle Investments, LLC

(Last)

(First)

(Middle)

885 3RD AVENUE

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

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 ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

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

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

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	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)
Class A	4,902,989	I	See Remarks

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)

1. Name and Address of Reporting Person^*

Harraden Circle Investments, LLC

(Last)

(First)

(Middle)

885 3RD AVENUE

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Harraden Circle Investors GP, LP

(Last)

(First)

(Middle)

885 THIRD AVE.

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Harraden Circle Investors GP, LLC

(Last)

(First)

(Middle)

885 THIRD AVE.

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Harraden Circle Investors, LP

(Last)

(First)

(Middle)

885 THIRD AVE.

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Harraden Circle Special Opportunities, LP

(Last)

(First)

(Middle)

885 THIRD AVE.

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Harraden Circle Strategic Investments, LP

(Last)

(First)

(Middle)

885 THIRD AVE.

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Harraden Circle Concentrated, LP

(Last)

(First)

(Middle)

885 THIRD AVE.

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Fortmiller Frederick Vincent Jr.

(Last)

(First)

(Middle)

885 THIRD AVE.

SUITE 2600B

(Street)

NEW YORK

10022

(City)

(State)

(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

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.

	HARRADEN CIRCLE INVESTMENTS, LLC, By: /s/ Frederick V. Fortmiller, Jr., Managing Member	04/08/2026
	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
	HARRADEN CIRCLE INVESTORS GP, LLC, By: /s/ Frederick V. Fortmiller, Jr., Managing Member	04/08/2026
	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
	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
	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
	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
	FREDERICK V. FORTMILLER, JR., /s/ Frederick V. Fortmiller, Jr.	04/08/2026
	** 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: SEC 1473 (03-26)

SEC Form 3 filed by new insider Harraden Circle Investments, Llc