Haymaker Acquisition Corp. 4 — First Trust entities filed an Amendment No. 3 to a Schedule 13G/A reporting beneficial ownership of the issuer's Class A Ordinary Shares as of 03/31/2026.
First Trust Merger Arbitrage Fund reported 230,759 shares (0.97%), and First Trust Capital Management L.P., First Trust Capital Solutions L.P. and FTCS Sub GP LLC collectively reported 264,228 shares (1.13%). The filing is a joint statement and describes advisory/control relationships and sole voting and dispositive power for the amounts reported.
Positive
None.
Negative
None.
Insights
Institutional holders disclose modest positions under 5% with voting and dispositive control through advisory relationships.
The filing shows two related First Trust reporting persons holding 230,759 and 264,228 shares respectively, each with sole voting and dispositive power as investment adviser or control person. The data are dated 03/31/2026, and entities state advisory/control relationships.
Cash‑flow treatment or plans to transact are not included in the excerpt; subsequent filings would disclose any changes in holdings or voting intentions.
Key Figures
VARBX shares:230,759 sharesFirst Trust collective shares:264,228 sharesVARBX percent of class:0.97%+2 more
5 metrics
VARBX shares230,759 sharesAs of 03/31/2026
First Trust collective shares264,228 sharesAs of 03/31/2026 (FTCM, FTCS, Sub GP)
VARBX percent of class0.97%Percent of outstanding Class A Ordinary Shares as of 03/31/2026
FTCM/FTCS/Sub GP percent1.13%Percent of outstanding Class A Ordinary Shares as of 03/31/2026
Schedule 13G/A, beneficially owned, sole dispositive power
3 terms
Schedule 13G/Aregulatory
"Amendment No. 3 to a Schedule 13G/A reporting beneficial ownership"
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 ownedfinancial
"As of March 31, 2026 VARBX owned 230,759 shares of the outstanding Ordinary Shares"
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.
sole dispositive powerfinancial
"Sole Dispositive Power 230,759.00 and 264,228.00 respectively"
Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 3)
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
First Trust Merger Arbitrage Fund
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
230,759.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
230,759.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
230,759.00
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)
0.97 %
12
Type of Reporting Person (See Instructions)
IV
SCHEDULE 13G
CUSIP Number(s):
G4375F108
1
Names of Reporting Persons
First Trust Capital Management L.P.
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
264,228.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
264,228.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
264,228.00
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)
1.13 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP Number(s):
G4375F108
1
Names of Reporting Persons
First Trust Capital Solutions L.P.
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
264,228.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
264,228.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
264,228.00
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)
1.13 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
G4375F108
1
Names of Reporting Persons
FTCS Sub GP 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
264,228.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
264,228.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
264,228.00
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)
1.13 %
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:
501 Madison Avenue, Floor 5, New York, NY, 10022
Item 2.
(a)
Name of person filing:
This Schedule 13G/A is being filed jointly by First Trust Merger Arbitrage Fund ("VARBX"), First Trust Capital Management L.P. ("FTCM"), First Trust Capital Solutions L.P. ("FTCS") and FTCS Sub GP LLC ("Sub GP").
(1) VARBX, a series of Investment Managers Series Trust II, an investment company registered under the Investment Company Act of 1940.
(2) FTCM, an investment adviser registered with the SEC that provides investment advisory services to, among others, (i) series of Investment Managers Series Trust II, an investment company registered under the Investment Company Act of 1940, specifically First Trust Multi-Strategy Fund and VARBX and (ii) First Trust Alternative Opportunities Fund, an investment company registered under the Investment Company Act of 1940 (collectively, the "Client Accounts").
(3) FTCS, a Delaware limited partnership and control person of FTCM.
(4) Sub GP, a Delaware limited liability company and control person of FTCM.
Each of the persons identified herein is referred to as a "Reporting Person" and, collectively, as the "Reporting Persons." Each of the Reporting Persons is a party to that certain Joint Filing Statement attached hereto.
(b)
Address or principal business office or, if none, residence:
The principal business address of FTCM, FTCS and Sub GP is 225 W. Wacker Drive, 21st Floor, Chicago, IL 60606. The principal business address of VARBX is 235 West Galena Street, Milwaukee, WI 53212.
(c)
Citizenship:
United States
(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:
As investment adviser to the Client Accounts, FTCM has the authority to invest the funds of the Client Accounts in securities (including Ordinary Shares of Haymaker Acquisition Corp 4 (the "Issuer")) as well as the authority to purchase, vote and dispose of securities, and may thus be deemed the beneficial owner of any shares of the Issuer's Ordinary Shares held in the Client Accounts. As of March 31, 2026 VARBX owned 230,759 shares of the outstanding Ordinary Shares of the Issuer, while FTCM, FTCS and Sub GP collectively owned 264,228 shares of the outstanding Ordinary Shares of the Issuer.
FTCS and Sub GP may be deemed to control FTCM and therefore may be deemed to be beneficial owners of the Ordinary Shares reported in this Schedule 13G/A. No one individual controls FTCS or Sub GP. FTCS and Sub GP do not own any Ordinary Shares of the Issuer for their own accounts.
(b)
Percent of class:
VARBX: 0.97%
FTCM, FTCS and Sub GP: 1.13%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
VARBX: 230759
FTCM, FTCS and Sub GP: 264228
(ii) Shared power to vote or to direct the vote:
VARBX: 0
FTCM, FTCS and Sub GP: 0
(iii) Sole power to dispose or to direct the disposition of:
VARBX: 230759
FTCM, FTCS and Sub GP: 264228
(iv) Shared power to dispose or to direct the disposition of:
VARBX: 0
FTCM, FTCS and Sub GP: 0
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.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
See Item 4.
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 Item 2.
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.
What ownership stake does First Trust report in HYAC?
First Trust reports two holdings: 230,759 shares (0.97%) and 264,228 shares (1.13%). These figures are reported as of 03/31/2026 and reflect sole voting and dispositive power exercised by the named reporting persons.
Which First Trust entities filed the Schedule 13G/A for HYAC?
The joint filing names VARBX, First Trust Capital Management L.P., First Trust Capital Solutions L.P., and FTCS Sub GP LLC. The statement explains advisory relationships and that FTCS and Sub GP may be deemed control persons of FTCM.
Does the filing state whether First Trust will sell or purchase more HYAC shares?
The excerpt does not state any planned purchases or sales. It reports current beneficial ownership and voting/dispositive power as of 03/31/2026; future transactions would require separate filings if reportable.
What voting and dispositive powers are reported for these holdings?
Each reported position is listed with sole voting power and sole dispositive power for the stated shares. Shared voting/dispositive power is listed as 0 for the disclosed holdings in the filing.
Is the reported ownership over 5% of HYAC's class?
No; the filing states ownership of 5 percent or less of a class. Both reported percentages, 0.97% and 1.13%, are under the 5% threshold noted in Item 5.
