Mizuho reports 0% stake in Oak Woods

Mizuho Financial Group, Inc. filed an amended Schedule 13G as a Parent Holding Company regarding common shares of Oak Woods Acquisition Corporation.

Rhea-AI Filing Summary

Mizuho Financial Group, Inc. filed an amended Schedule 13G as a Parent Holding Company regarding common shares of Oak Woods Acquisition Corporation. The filing states that Mizuho beneficially owns 0 shares, representing 0.0% of the class, with no sole or shared power to vote or dispose of any shares. The report indicates ownership of 5 percent or less of Oak Woods’ common shares. Mizuho is organized in Japan and certifies that its foreign regulatory scheme is substantially comparable to that of functionally equivalent U.S. institutions.

Key Figures

Beneficial ownership: 0 shares Percent of class: 0.0% Sole voting power: 0 +1 more

4 metrics

Beneficial ownership 0 shares Amount beneficially owned in Oak Woods Acquisition Corporation common shares

Percent of class 0.0% Percentage of Oak Woods common shares reported as owned

Sole voting power 0 Shares over which Mizuho has sole power to vote or direct the vote

Shared voting power 0 Shares over which Mizuho has shared power to vote or direct the vote

Key Terms

Schedule 13G, beneficial owner, Parent Holding Company, dispositive power

4 terms

Schedule 13G regulatory

"I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D."

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficial owner financial

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

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Parent Holding Company financial

"CUSIP No.: 67190B112 | Parent Holding Company Item 4."

dispositive power financial

"Sole power to dispose or to direct the disposition of: 0"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does OAKU’s Schedule 13G/A filing by Mizuho Financial Group report?

The Schedule 13G/A for OAKU reports that Mizuho Financial Group beneficially owns 0 common shares of Oak Woods Acquisition Corporation, equal to 0.0% of the class, and has no voting or dispositive power over any shares.

Does Mizuho Financial Group still hold a significant stake in OAKU?

According to the filing, Mizuho Financial Group now holds 0 shares of OAKU, representing 0.0% of the class. The filing is marked as ownership of 5 percent or less of Oak Woods’ common shares.

Who is the reporting person in the OAKU Schedule 13G/A amendment?

The reporting person for OAKU is Mizuho Financial Group, Inc., a parent holding company organized in Japan, with its principal office at 1-5-5 Otemachi, Chiyoda-ku, Tokyo, 100-8176, Japan.

What voting power over OAKU shares does Mizuho report?

Mizuho reports no voting power over OAKU shares, with 0 shares under sole voting power and 0 shares under shared voting power, and similarly 0 shares for sole and shared dispositive power.

When was the OAKU Schedule 13G/A amendment signed and by whom?

The OAKU Schedule 13G/A amendment was signed on 08/13/2026 by Takahiro Katsura, Managing Director, Global Corporate Function Coordination Department, on behalf of Mizuho Financial Group, Inc.

How is Mizuho classified in relation to the OAKU securities it reports on?

Mizuho Financial Group is classified as a Parent Holding Company in relation to the OAKU securities. The filing notes that certain Mizuho entities may be deemed indirect beneficial owners through their wholly owned subsidiary Mizuho Securities USA LLC.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/13/2026 - 06:33 AM Accepted by SEC EDGAR 08/13/2026 - 06:33 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Oak Woods Acquisition Corporation

(Name of Issuer)

Common Shares

(Title of Class of Securities)

67190B112

(CUSIP Number)

06/30/2026

(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): 67190B112

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: Oak Woods Acquisition Corporation
(b)	Address of issuer's principal executive offices: 101 Roswell Drive, Nepean, Ontario, Canada K2J 0H5
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.: 67190B112
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:	08/13/2026