[SCHEDULE 13G/A] CO2 Energy Transition Corp. Unit SEC Filing

Rhea-AI Filing Summary

Mizuho Financial Group reports beneficial ownership of 838,309 common shares of CO2 Energy Transition Corp, representing 8.7% of the class. The filer states sole voting and sole dispositive power over these shares and identifies itself as a parent holding company; related entities including Mizuho Bank and Mizuho Americas LLC may be deemed indirect beneficial owners of equity held by its wholly owned subsidiary Mizuho Securities USA LLC. This Schedule 13G/A filing includes a certification that the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

Positive

• Material institutional stake disclosed: 838,309 shares representing 8.7% of the class (exceeds 5% materiality threshold).
• Sole voting and dispositive power: Mizuho reports exclusive control over voting and disposition of the reported shares.
• Passive ownership certification: Filing certifies shares were acquired and held in the ordinary course of business and not to influence control.

Negative

• None.

Insights

Financial Analyst

TL;DR: Mizuho discloses a material passive stake of 8.7% (838,309 shares) in CO2 Energy Transition Corp.

The filing shows a significant institutional position disclosed on a Schedule 13G/A, indicating passive ownership rather than an intent to change control. The holder reports sole voting and dispositive power for 838,309 shares, representing 8.7% of the outstanding class, which crosses the 5% materiality threshold and should be monitored for potential liquidity and shareholder base implications.

Corporate Governance Expert

TL;DR: Ownership is material but designated as passive; no asserted control intent.

Mizuho is identified as a parent holding company and discloses potential indirect ownership through affiliated entities and a wholly owned broker-dealer subsidiary. The filing includes an explicit certification that holdings are not held to influence control, consistent with Schedule 13G treatment; therefore governance risk from activist intent appears low based on this disclosure alone.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

CO2 Energy Transition Corp.

(Name of Issuer)

Common Shares

(Title of Class of Securities)

12664M103

(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. 12664M103

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 838,309.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 838,309.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

838,309.00

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)

8.7 %

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: CO2 Energy Transition Corp.
(b)	Address of issuer's principal executive offices: 1334 BRITTMOORE RD SUITE 190 HOUSTON, TX, 77043
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.: 12664M103
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: 838,309
(b)	Percent of class: 8.7 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 838,309
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 838,309
	(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 CO2 Energy Transition Corp (NOEMU) shares does Mizuho own?

Mizuho Financial Group reports beneficial ownership of 838,309 common shares.

What percentage of NOEMU does Mizuho’s stake represent?

The filing states the position represents 8.7% of the class.

Does Mizuho have voting control over its NOEMU shares?

Yes. The filer reports sole voting power and sole dispositive power for 838,309 shares.

Is this Schedule 13G/A a sign Mizuho intends to take control of NOEMU?

No. The Schedule 13G/A includes a certification that the shares are held in the ordinary course of business and were not acquired to change or influence control of the issuer.

Is Mizuho identified as a parent holding company in the filing?

Yes. The filing classifies Mizuho as a parent holding company and notes affiliated entities may be deemed indirect beneficial owners via a subsidiary.