Mizuho (HSPT) files amended 13G/A; reports 0 shares beneficially owned

Rhea-AI Filing Summary

Horizon Space Acquisition II Corp. received an amended Schedule 13G/A filing by Mizuho Financial Group, Inc. stating that Mizuho (through its subsidiaries) reports 0 shares beneficially owned of Horizon Space Acquisition II Corp. common stock (CUSIP G4627B103), representing 0.0% of the class. The filing identifies Mizuho Securities USA LLC as the subsidiary holding any underlying position and includes the parent certification regarding comparable foreign regulatory scheme. The signature on the amendment is dated 05/14/2026.

Insights

Corporate Governance Analyst

Mizuho’s amendment reports no beneficial ownership and clarifies parent/subsidiary relationships.

The filing states 0 shares beneficially owned and 0.0% ownership, with a comment that Mizuho entities "may be deemed to be indirect beneficial owners" of shares directly held by Mizuho Securities USA LLC. This preserves transparency about potential indirect links while reporting no direct stake.

Cash‑flow treatment and trading intent are not disclosed in the excerpt; subsequent filings would be required to show any change in holdings.

Regulatory Compliance Specialist

Parent holding company certification and exhibit mechanics are documented.

The amendment includes a parent holding company certification asserting comparability of the foreign regulatory scheme and references Exhibit A for subsidiary identification and Item 3 classification. Such exhibits typically satisfy Schedule 13G/A parent‑company disclosure rules.

Document attaches a signature by a named managing director dated 05/14/2026, fulfilling the attestation requirement in the excerpt.

Key Figures

Amount beneficially owned: 0 shares Percent of class: 0.0% CUSIP: G4627B103 +3 more

6 metrics

Amount beneficially owned 0 shares Item 4 from Schedule 13G/A

Percent of class 0.0% Item 4 from Schedule 13G/A

CUSIP G4627B103 Common Shares of Horizon Space Acquisition II Corp.

Filing header date 03/31/2026 Amendment No. 3 header

Signature date 05/14/2026 Signature by Takahiro Katsura, Managing Director

Issuer address 1412 BROADWAY, 21ST FLOOR, SUITE 21V, NEW YORK, NY, 10018 Issuer principal executive offices as stated

Key Terms

Schedule 13G/A, beneficially owned, Parent Holding Company, CUSIP

4 terms

Schedule 13G/A regulatory

"“(Amendment No. 3 ) Horizon Space Acquisition II Corp. Common Shares”"

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 regulatory

"“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” appears in Item 2 and Item 7 discussion"

CUSIP financial

"“CUSIP No.: G4627B103”"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

Horizon Space Acquisition II Corp.

(Name of Issuer)

Common Shares

(Title of Class of Securities)

G4627B103

(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): G4627B103

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: Horizon Space Acquisition II Corp.
(b)	Address of issuer's principal executive offices: 1412 BROADWAY, 21ST FLOOR, SUITE 21V, NEW YORK, NY, 10018
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.: G4627B103
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

FAQ

What does Mizuho’s Schedule 13G/A say about HSPT ownership?

The filing states 0 shares beneficially owned of Horizon Space Acquisition II Corp. common stock, representing 0.0% of the class. It notes indirect ownership may exist through Mizuho Securities USA LLC.

Who filed the amendment for Horizon Space Acquisition II Corp. (HSPT)?

The amendment was filed by Mizuho Financial Group, Inc., with a signature by Takahiro Katsura, Managing Director, dated 05/14/2026, according to the excerpt.

Does the Schedule 13G/A show any direct shares held by Mizuho?

No. Item 4 reports Amount beneficially owned: 0 and voting/dispositive powers all listed as 0. The filing therefore reports no direct beneficial ownership in the excerpt.

What subsidiary is referenced in the filing for potential indirect ownership?

The filing states that Mizuho Securities USA LLC is the entity that directly holds the equity securities, with Mizuho Bank and Mizuho Americas noted as potentially indirect beneficial owners.

Is there any ownership percentage reported in the amendment?

Yes. The filing reports 0.0% of the class as the percent owned by Mizuho Financial Group, Inc. in the excerpt.