Schedule 13G/A: Mizuho Reports >5% Ownership in Oak Woods Corporation

Rhea-AI Filing Summary

Oak Woods Acquisition Corporation received a Schedule 13G/A from Mizuho Financial Group, Inc. reporting beneficial ownership of 413,916 common shares, representing 9.0% of the class. Mizuho reports sole voting and dispositive power over all 413,916 shares and identifies itself as a parent holding company, noting that Mizuho Bank, Mizuho Americas LLC and Mizuho Securities USA LLC may be indirect owners of the securities. The filing is Amendment No.3 and cites 06/30/2025 as the event date. The statement includes a certification that the securities were acquired in the ordinary course of business and that the applicable foreign regulatory scheme is substantially comparable to U.S. equivalents. The filing is signed by Takahiro Katsura on 08/13/2025.

Positive

• Reported beneficial ownership of 413,916 shares (9.0%), exceeding the 5% disclosure threshold
• Filer reports sole voting and dispositive power over all reported shares, clarifying control
• Filing identifies parent/subsidiary relationships (Mizuho Bank, Mizuho Americas LLC, Mizuho Securities USA LLC), improving ownership transparency

Negative

• None.

Insights

Financial Analyst

TL;DR: Mizuho reports a material 9.0% stake (413,916 shares) in Oak Woods via a Schedule 13G/A (Amendment No.3).

The filing discloses beneficial ownership of 413,916 shares, equal to 9.0% of the class, with sole voting and dispositive power. It is filed by Mizuho Financial Group as a parent holding company and explicitly references related entities that may be indirect owners of securities held directly by Mizuho Securities USA LLC. This is a >5% disclosure under the Schedule 13G framework and therefore a material ownership disclosure for market participants. The document contains the issuer and filer addresses and a certification regarding ordinary-course acquisition.

Corporate Governance Expert

TL;DR: The Schedule 13G/A confirms sole control of reported shares and identifies the filer as a parent holding company with related subsidiaries.

The statement clarifies governance-related facts: Mizuho reports sole voting and dispositive authority over all reported shares and identifies potential indirect ownership through named subsidiaries. It includes the Item 10 certification concerning acquisition intent and regulatory comparability. The signature block shows a named officer, providing formal attestation to completeness and accuracy. This filing primarily provides transparency on ownership and control rather than operational or financial changes.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

Oak Woods Acquisition Corporation

(Name of Issuer)

Common Shares

(Title of Class of Securities)

67190B104

(CUSIP Number)

06/30/2025

(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)

SCHEDULE 13G

CUSIP No. 67190B104

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 413,916.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 413,916.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

413,916.00

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)

9.0 %

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 Rosewell Drive Nepean Ontario, Canada, K2J0H5
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.: 67190B104
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: 413,916
(b)	Percent of class: 9.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 413,916
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 413,916
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	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:	08/13/2025

FAQ

How many Oak Woods (OAKUU) shares does Mizuho own?

Mizuho Financial Group reports beneficial ownership of 413,916 common shares, representing 9.0% of the class.

What type of SEC filing did Mizuho submit for OAKUU?

Mizuho filed a Schedule 13G/A (Amendment No.3) disclosing its beneficial ownership.

What event date triggered the Schedule 13G/A filing for OAKUU?

The filing cites 06/30/2025 as the date of the event requiring the statement.

Does Mizuho have voting power over the reported Oak Woods shares?

Yes. The filing states Mizuho has sole voting power and sole dispositive power over all 413,916 shares.

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

The filing is signed by Takahiro Katsura, Managing Director, with a signature date of 08/13/2025.