[SCHEDULE 13G/A] Columbus Acquisition Corp Unit SEC Filing

Rhea-AI Filing Summary

Mizuho Financial Group reports beneficial ownership of 714,800 common shares of Columbus Acquisition Corp, representing 9.0% of the class, via a Schedule 13G/A.

The filing states Mizuho has sole voting power and sole dispositive power over the 714,800 shares and identifies the filer as a parent holding company. The statement notes that Mizuho Bank, Mizuho Americas and Mizuho Americas LLC may be deemed indirect beneficial owners through wholly owned Mizuho Securities USA LLC. Item 10 certification declares the shares are held in the ordinary course of business and not for the purpose of influencing control of the issuer.

Positive

• Declared beneficial ownership of 714,800 shares, representing 9.0% of Columbus Acquisition Corp's common shares
• Reported sole voting and sole dispositive power over all 714,800 shares
• Filed as a Schedule 13G/A with an Item 10 certification asserting ordinary-course, non-control intent

Negative

• None.

Insights

Financial Analyst

TL;DR: Mizuho discloses a passive 9.0% stake (714,800 shares) in Columbus Acquisition Corp with full voting and disposition authority.

Mizuho's Schedule 13G/A indicates a material position above the 5% threshold that must be disclosed to the market. The filing reports 714,800 shares (9.0%) with sole voting and dispositive powers, suggesting direct control over those specific shares. The filer classifies itself as a parent holding company and discloses potential indirect ownership through its subsidiaries, including Mizuho Securities USA LLC. Item 10 certification states the stake is held in the ordinary course and not to influence issuer control, which aligns with a passive reporting posture rather than an activist or control-seeking intent.

Corporate Governance Expert

TL;DR: Disclosure shows a significant passive holding; no group action or control intent is declared.

The Schedule 13G/A identifies Mizuho as a parent holding company holding 714,800 shares (9.0%) and reports sole voting and dispositive power for those shares. The filing marks Items 8 and 9 as not applicable, indicating no group affiliations or dissolution notices. The Item 10 certification explicitly states the securities are not held to influence control, reinforcing a non-control, compliance-oriented disclosure. For governance considerations, the position is material to ownership tables but the filing contains no indications of governance changes or coordinated shareholder action.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Columbus Acquisition Corp

(Name of Issuer)

Common Shares

(Title of Class of Securities)

G2295P107

(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. G2295P107

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 714,800.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 714,800.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

714,800.00

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: Columbus Acquisition Corp
(b)	Address of issuer's principal executive offices: 14 Prudential Tower Singapore, Republic of Singapore, 049712
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.: G2295P107
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: 714,800
(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: 714,800
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 714,800
	(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

What stake does Mizuho Financial Group report in Columbus Acquisition Corp (COLAU)?

Mizuho reports beneficial ownership of 714,800 shares, representing 9.0% of Columbus Acquisition Corp's common shares.

Does Mizuho claim control or intent to influence Columbus Acquisition Corp?

No. The filing's Item 10 certification states the shares are held in the ordinary course of business and not to influence control of the issuer.

What powers does Mizuho report over the shares in COLAU?

Mizuho reports sole voting power and sole dispositive power over the 714,800 shares.

Is Mizuho filing as part of a group for this stake in COLAU?

No. Items regarding group membership are marked Not Applicable, and the filing does not identify any group members or coordinated group action.

Are any subsidiaries identified as indirect beneficial owners of the COLAU shares?

Yes. The filing notes that Mizuho Bank, Mizuho Americas and Mizuho Americas LLC may be deemed indirect beneficial owners through wholly owned Mizuho Securities USA LLC.