Mizuho (HYAC) files 13G/A amendment showing 0 shares (05/14/2026)

Rhea-AI Filing Summary

Mizuho Financial Group, Inc. files Amendment No. 1 to a Schedule 13G/A reporting 0 shares of Haymaker Acquisition Corp. 4 common stock (CUSIP G4375F108).

The filing states 0.0% beneficial ownership and clarifies indirect ownership ties through Mizuho Securities USA LLC; it is signed by Takahiro Katsura on 05/14/2026.

Insights

Compliance Analyst

Amendment confirms no beneficial ownership and parent/subsidiary disclosure.

The schedule amendment restates that Mizuho Financial Group, Inc. holds 0.0% of the class and 0 shares, with an exhibit referenced for the subsidiary that holds the securities. The filing includes a parent-holding certification about comparability of foreign regulatory schemes.

For registrars and transfer agents, this is a routine update; subsequent filings will reflect any change in holdings.

Key Figures

Amount beneficially owned: 0 shares Percent of class: 0.0% CUSIP: G4375F108 +1 more

4 metrics

Amount beneficially owned 0 shares Schedule 13G/A Item 4(a)

Percent of class 0.0% Schedule 13G/A Item 4(b)

CUSIP G4375F108 Haymaker Acquisition Corp. 4 Common Shares

Signature date 05/14/2026 Signature by Takahiro Katsura

Key Terms

Schedule 13G/A, Beneficially owned, Parent Holding Company, Indirect beneficial owner

4 terms

Schedule 13G/A regulatory

"Amendment No. 1 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 owned financial

"Amount beneficially owned: 0 (b) Percent of class: 0.0 %"

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.

Parent Holding Company regulatory

"Parent Holding Company and exhibit stating the identity of the relevant subsidiary"

Indirect beneficial owner regulatory

"may be deemed to be indirect beneficial owners of said equity securities"

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Available on EDGAR 05/14/2026 - 06:10 AM Accepted by SEC EDGAR 05/14/2026 - 06:08 AM Learn about SEC filing dates

FAQ

What does Mizuho's Schedule 13G/A amendment for HYAC show?

It reports 0 shares beneficially owned of Haymaker Acquisition Corp. 4, with a stated ownership of 0.0%. The filing also identifies related subsidiaries and includes a parent-holding certification dated 05/14/2026.

Does the amendment indicate indirect ownership through subsidiaries for HYAC?

Yes. The filing notes that Mizuho Securities USA LLC directly holds the equity and that Mizuho Financial Group, Mizuho Bank, and Mizuho Americas may be deemed indirect owners through that subsidiary.

Who signed the Schedule 13G/A amendment for HYAC and when?

The amendment is signed by Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department, on 05/14/2026, certifying the parent-holding disclosures and regulatory comparability statement.

Does this filing change HYAC's shareholder register or indicate a sale/purchase?

No. The amendment reports 0 shares beneficially owned and does not state any transaction, transfer, or change in holdings. It serves as a disclosure of ownership status and subsidiary identification.

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)

Common Shares

(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

Mizuho Financial Group, Inc.

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

JAPAN

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

FI

Comment for Type of Reporting Person: Mizuho Financial Group, Inc., Mizuho Bank, Ltd. and Mizuho Americas LLC may be deemed to be indirect beneficial owners of said equity securities directly held by Mizuho Securities USA LLC which is their wholly-owned subsidiary.

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: Mizuho Financial Group, Inc.
(b)	Address or principal business office or, if none, residence: 1-5-5, Otemachi, Chiyoda-ku, Tokyo, 100-8176, Japan
(c)	Citizenship: Japan
(d)	Title of class of securities: Common Shares
(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).
	Parent Holding Company
Item 4.	Ownership
(a)	Amount beneficially owned: 0
(b)	Percent of class: 0.0 %
(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: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 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.
	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 Exhibit A
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. By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to Parent Holding Company is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D.

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.

Mizuho Financial Group, Inc.

Signature:	/s/ Takahiro Katsura
Name/Title:	Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department
Date:	05/14/2026