StoneBridge Acquisition Sponsor II LLC - 05 Feb 2026 Form 4 Insider Report for StoneBridge Acquisition II Corp (APAC)

Role: 10%+ Owner
Signature: /s/ Bhargava Marepally, as Managing Member of BP SPAC Sponsor II LLC, the Managing Member of StoneBridge Acquisition Sponsor II LLC
Issuer symbol: APAC
Transactions as of: 05 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 06 Feb 2026, 20:30:00 UTC
Previous filing: 03 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
StoneBridge Acquisition Sponsor II LLC	10%+ Owner	ONE WORLD TRADE CENTER, SUITE 8500, NEW YORK	/s/ Bhargava Marepally, as Managing Member of BP SPAC Sponsor II LLC, the Managing Member of StoneBridge Acquisition Sponsor II LLC	06 Feb 2026	0002089985

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	APAC	Class B Ordinary Shares	Award		-100,000	-9.2%		991,667	05 Feb 2026	Class A Ordinary Shares	100,000		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On, and effective, February 5, 2026, the board of directors (the "Board") of StoneBridge Acquisition II Corporation (the "Issuer") approved an equity grant of 100,000 Class B Ordinary Shares of the Issuer to four independent members of the Board for their respective services as members of the Board and committees of the Board. The Class B Shares were transferred by and from the reporting person, which entity is also the Issuer's sponsor, to the four independent members of the Board. The Class B Ordinary Shares will automatically convert into Class A Ordinary Shares at the time of the Issuer's initial business combination on a one-for-one basis, subject to certain adjustments and have no expiration date.
F2	The shares were, and are, as applicable, directly held by the reporting person. BP SPAC Sponsor II LLC is the sole managing member of the reporting person. Bhargav Marepally and Prabhu Antony are the managing members of BP SPAC Sponsor II LLC, and have voting and investment discretion with respect to the Class B Ordinary Shares held directly by the reporting person. Each of Mr. Marepally and Mr. Antony disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest each may have therein, directly or indirectly.

Content

On, and effective, February 5, 2026, the board of directors (the "Board") of StoneBridge Acquisition II Corporation (the "Issuer") approved an equity grant of 100,000 Class B Ordinary Shares of the Issuer to four independent members of the Board for their respective services as members of the Board and committees of the Board. The Class B Shares were transferred by and from the reporting person, which entity is also the Issuer's sponsor, to the four independent members of the Board. The Class B Ordinary Shares will automatically convert into Class A Ordinary Shares at the time of the Issuer's initial business combination on a one-for-one basis, subject to certain adjustments and have no expiration date.

The shares were, and are, as applicable, directly held by the reporting person. BP SPAC Sponsor II LLC is the sole managing member of the reporting person. Bhargav Marepally and Prabhu Antony are the managing members of BP SPAC Sponsor II LLC, and have voting and investment discretion with respect to the Class B Ordinary Shares held directly by the reporting person. Each of Mr. Marepally and Mr. Antony disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest each may have therein, directly or indirectly.