Haymaker Acquisition Corp. 4 Schedule 13G/A amendment reports that Fort Baker Capital Management LP directly holds 250,000 Class A ordinary shares of the issuer, representing 1.1% of the Class A outstanding. The filing states shares outstanding were 23,425,499 as of March 30, 2026.
The filing also discloses that Steven Patrick Pigott and Fort Baker Capital, LLC share voting and dispositive power over the same 250,000 shares. The reporting persons disclaim group membership and broader beneficial ownership beyond their pecuniary interest.
Positive
None.
Negative
None.
Insights
Minor passive holding disclosed; no change in control signals.
The Schedule 13G/A amendment lists a 250,000-share position, equal to 1.1% of Class A shares as of March 30, 2026. The filing identifies shared voting and dispositive power among related reporting persons; no separate sales or acquisitions are reported here.
Timing and cash‑flow treatment are not stated in the excerpt. Subsequent filings would be required to show any trading activity or material change to ownership percentages.
Key Figures
Reported holdings:250,000 sharesPercent of class:1.1%Shares outstanding:23,425,499 shares
3 metrics
Reported holdings250,000 sharesDirect holdings by Fort Baker Capital Management LP
Percent of class1.1%Percent of Class A outstanding per filing
Shares outstanding23,425,499 sharesClass A shares outstanding as of <date>March 30, 2026</date>
Key Terms
Schedule 13G/A, beneficially owned, shared dispositive power
3 terms
Schedule 13G/Aregulatory
"Reference is hereby made to Items 5-9 of this Schedule"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
beneficially ownedregulatory
"Amount beneficially owned: Reference is hereby made to Items 5-9"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
Fort Baker Capital Management LP directly holds 250,000 Class A shares, representing 1.1% of the Class A outstanding as reported. The filing states the outstanding share count was 23,425,499 as of March 30, 2026.
Who shares voting and dispositive power over the reported shares?
Steven Patrick Pigott and Fort Baker Capital, LLC are disclosed as sharing voting and dispositive power over the 250,000 shares; Pigott is described as CIO and the LLC acts as general partner.
Does the filing indicate Fort Baker is in a group with other holders?
No. The filing states the reporting persons are filing jointly but expressly disclaim membership in a group and disclaim beneficial ownership beyond pecuniary interest in the reported shares.
What is the "as of" date for the outstanding share count used?
The percent calculation uses the issuer's reported figure of 23,425,499 Class A shares outstanding stated in the issuer's Form 10-K as of March 30, 2026.
Does this Schedule 13G/A show any purchases or sales by the reporting persons?
No purchase or sale transactions are described in the provided excerpt; it only reports current beneficial ownership and voting/dispositive power among the reporting persons.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 2)
Haymaker Acquisition Corp. 4
(Name of Issuer)
Class A Ordinary Shares, par value $0.0001 per share
(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:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
G4375F108
1
Names of Reporting Persons
Fort Baker Capital 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:
5
Sole Voting Power
0.00
6
Shared Voting Power
250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
250,000.00
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)
1.1 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP Number(s):
G4375F108
1
Names of Reporting Persons
Steven Patrick Pigott
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:
5
Sole Voting Power
0.00
6
Shared Voting Power
250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
250,000.00
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)
1.1 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
G4375F108
1
Names of Reporting Persons
Fort Baker Capital, 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:
5
Sole Voting Power
0.00
6
Shared Voting Power
250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
250,000.00
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)
1.1 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Haymaker Acquisition Corp. 4
(b)
Address of issuer's principal executive offices:
817 E. 4th Street, Tulsa, OKLAHOMA, 74120.
Item 2.
(a)
Name of person filing:
Fort Baker Capital Management LP
Steven Patrick Pigott
Fort Baker Capital, LLC
(b)
Address or principal business office or, if none, residence:
The principal business address of each reporting person is 700 Larkspur Landing Circle, Suite 275, Larkspur, CA 94939.
(c)
Citizenship:
Fort Baker Capital Management LP: Delaware Limited Partnership
Steven Patrick Pigott: Citizen of the United States
Fort Baker Capital, LLC: Delaware Limited Liability Company
(d)
Title of class of securities:
Class A Ordinary Shares, par value $0.0001 per share
(e)
CUSIP No.:
G4375F108
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);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(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);
(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).
Item 4.
Ownership
(a)
Amount beneficially owned:
Reference is hereby made to Items 5-9 of this Schedule, which Items are incorporated by reference herein.
Fort Baker Capital Management LP directly holds 250,000 Class A ordinary shares. Steven Patrick Pigott acts as Limited Partner/Chief Investment Officer for Fort Baker Capital Management LP. Fort Baker Capital, LLC acts as General Partner for Fort Baker Capital Management LP.
The Reporting Persons are filing this Schedule 13G jointly, but not as members of a group, and each disclaims membership in a group. Each also disclaims beneficial ownership of the securities reported herein except to the extent of that person's pecuniary interest therein.
The calculation of percentage of beneficial ownership in Item 11 was derived from the Issuer's annual report on Form 10-K filed with the Securities and Exchange Commission on March 30, 2026, in which the Issuer stated that the number of Class A ordinary shares outstanding was 23,425,499 as of March 30, 2026.
(b)
Percent of class:
Fort Baker Capital Management LP: 1.1%
Steven Patrick Pigott: 1.1%
Fort Baker Capital, LLC: 1.1%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Fort Baker Capital Management LP: 0
Steven Patrick Pigott: 0
Fort Baker Capital, LLC: 0
(ii) Shared power to vote or to direct the vote:
Fort Baker Capital Management LP: 250,000
Steven Patrick Pigott: 250,000
Fort Baker Capital, LLC: 250,000
(iii) Sole power to dispose or to direct the disposition of:
Fort Baker Capital Management LP: 0
Steven Patrick Pigott: 0
Fort Baker Capital, LLC: 0
(iv) Shared power to dispose or to direct the disposition of:
Fort Baker Capital Management LP: 250,000
Steven Patrick Pigott: 250,000
Fort Baker Capital, LLC: 250,000
Item 5.
Ownership of 5 Percent or Less of a Class.
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.
