Clear Street LLC holds 307,426 shares in StoneBridge (APAC) — 5.0%

Rhea-AI Filing Summary

StoneBridge Acquisition II Corporation ownership filing reports that Clear Street LLC beneficially owns 307,426 shares of Common Stock, representing 5.0% of the class as of 05/05/2026. The filing shows Clear Street LLC holds sole voting and sole dispositive power over those shares. The Schedule 13G identifies Clear Street LLC's principal address and the reporting signatory as John DiBacco, Head of Markets Trading.

Insights

Institutional Ownership Analyst

Clear Street LLC reports a 5.0% beneficial stake with sole voting and dispositive power.

The filing lists 307,426 shares beneficially owned and attributes sole voting and sole dispositive power to Clear Street LLC as of 05/05/2026. The report is a standard Schedule 13G disclosure of a significant passive ownership position.

Actual trading intent and any future changes in holdings are not disclosed here; subsequent filings would show activity or a change in status.

Key Figures

Filing date: 05/05/2026 Shares beneficially owned: 307,426 shares Percent of class: 5.0% +2 more

5 metrics

Filing date 05/05/2026 Schedule 13G signature date

Shares beneficially owned 307,426 shares Amount beneficially owned reported by Clear Street LLC

Percent of class 5.0% Percent of common stock beneficially owned

Voting power Sole voting power: 307,426 Number of shares with sole voting power

Dispositive power Sole dispositive power: 307,426 Number of shares with sole dispositive power

Key Terms

Schedule 13G, Beneficially owned, Sole dispositive power

3 terms

Schedule 13G regulatory

"Item 1. (a) Name of issuer: StoneBridge Acquisition II Corporation"

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.

Beneficially owned regulatory

"Item 4. (a) Amount beneficially owned: 307426"

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.

Sole dispositive power regulatory

" (iii) Sole power to dispose or to direct the disposition of: 307426"

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

StoneBridge Acquisition II Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

G85096108

(CUSIP Number)

05/05/2026

(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): G85096108

1

Names of Reporting Persons

Clear Street LLC

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

NEW YORK

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 307,426.00
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

307,426.00

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)

5.0 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

Item 1.
(a)	Name of issuer: StoneBridge Acquisition II Corporation
(b)	Address of issuer's principal executive offices: ONE WORLD TRADE CENTER SUITE 8500NEW YORK NY 10007
Item 2.
(a)	Name of person filing: Clear Street LLC
(b)	Address or principal business office or, if none, residence: 4 WORLD TRADE CENTER, 150 Greenwich St Floor 45 New York, NY 10007
(c)	Citizenship: United States
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): G85096108
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).
Item 4.	Ownership
(a)	Amount beneficially owned: 307426
(b)	Percent of class: 5.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 307426
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 307426
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10. Certifications:

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.

Clear Street LLC

Signature:	John DiBacco
Name/Title:	Head of Markets Trading
Date:	05/05/2026

FAQ

What stake does Clear Street LLC report in StoneBridge Acquisition II (APAC)?

Clear Street LLC reports beneficial ownership of 307,426 shares, equal to 5.0% of common stock as stated in the Schedule 13G dated 05/05/2026. The filing lists sole voting and dispositive power for those shares.

Does Clear Street LLC have voting control over its reported shares in APAC?

Yes. The Schedule 13G shows Clear Street LLC has sole voting power and sole dispositive power over 307,426 shares of APAC common stock as of 05/05/2026, per the filing signature.

Who signed the Schedule 13G on behalf of Clear Street LLC?

The filing is signed by John DiBacco, listed as Head of Markets Trading, with the signature date of 05/05/2026 on the Schedule 13G for APAC.

Where is Clear Street LLC's principal business address for this filing?

Clear Street LLC's address in the filing is 4 WORLD TRADE CENTER, 150 Greenwich St Floor 45, New York, NY 10007, as provided in the Schedule 13G for APAC.

What does the 5.0% ownership mean for APAC’s public float?

This filing reports a 5.0% beneficial stake by Clear Street LLC in APAC as of 05/05/2026. It is a snapshot of one holder's position and does not by itself change public float or disclose trading intentions.