Mizuho (SCII) reports 520,817 shares — 3.0% stake disclosed (Schedule 13G/A)

Rhea-AI Filing Summary

SC II Acquisition Corp. ownership disclosure: Mizuho Financial Group, Inc. amended a Schedule 13G to report beneficial ownership of 520,817 common shares of SC II Acquisition Corp., representing 3.0% of the class. The filing states these shares are directly held by Mizuho Securities USA LLC, with indirect ownership attributed to Mizuho Financial Group and affiliates.

The filing is signed by Takahiro Katsura on 05/14/2026. The CUSIP for the class is G7866D102.

Insights

Institutional Ownership Analyst

Passive stake disclosure: Mizuho reports a 3.0% holding in SC II Acquisition Corp.

The filing is an amended Schedule 13G/A that lists 520,817 shares (3.0%) beneficially owned and attributes direct holding to Mizuho Securities USA LLC. This indicates a passive, reportable institutional position consistent with ownership reporting rules.

Dependence and next steps: subsequent filings could show changes if the holding crosses reportable thresholds or if a Schedule 13D is required; timing for further disclosure is not stated in the excerpt.

Key Figures

Beneficial ownership: 520,817 shares Percent of class: 3.0% CUSIP: G7866D102 +1 more

4 metrics

Beneficial ownership 520,817 shares Common Shares of SC II Acquisition Corp.

Percent of class 3.0% Reported percent of common shares beneficially owned

CUSIP G7866D102 Identifier for the class of Common Shares

Signature date 05/14/2026 Date signed by Takahiro Katsura on the amendment

Key Terms

Schedule 13G/A, Beneficially owned, Parent Holding Company, Sole Dispositive Power

4 terms

Schedule 13G/A regulatory

"Amendment No. 1 to Schedule 13G indicates passive investor disclosure"

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: 520,817 (defines ownership reported)"

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 filed this schedule pursuant to the applicable clause"

Sole Dispositive Power regulatory

"Sole Dispositive Power 520,817.00 (power to direct disposition)"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

SC II Acquisition Corp.

(Name of Issuer)

Common Shares

(Title of Class of Securities)

G7866D102

(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): G7866D102

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 520,817.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 520,817.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

520,817.00

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)

3.0 %

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: SC II Acquisition Corp.
(b)	Address of issuer's principal executive offices: 575 Fifth Avenue 14th Floor NEW YORK, NY, 10017
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.: G7866D102
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: 520,817
(b)	Percent of class: 3.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 520,817
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 520,817
	(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 stake does Mizuho Financial Group hold in SC II Acquisition Corp. (SCII)?

Mizuho reports beneficial ownership of 520,817 shares, equal to 3.0% of SC II Acquisition Corp.'s common shares, as stated in the amended Schedule 13G/A.

Who directly holds the reported SCII shares for Mizuho Financial Group?

The filing states the shares are directly held by Mizuho Securities USA LLC, with indirect beneficial ownership attributed to Mizuho Financial Group, Mizuho Bank, Ltd., and Mizuho Americas LLC.

What form was filed to report Mizuho's SCII holdings?

Mizuho filed an Amendment No. 1 to Schedule 13G (13G/A) to disclose the beneficial ownership of SC II Acquisition Corp. common shares (CUSIP G7866D102).

When did Mizuho sign the amended Schedule 13G/A for SCII?

The amendment is signed by Takahiro Katsura, Managing Director, with the signature date shown as 05/14/2026.

Does the filing indicate Mizuho has voting or dispositive power over the shares?

Yes; the filing reports sole voting power and sole dispositive power over 520,817 shares of SC II Acquisition Corp., per the Schedule 13G/A fields.