# EDGAR Filing Document

**Accession Number:** 0001853814
**File Stem:** 0001829126-26-001084
**Filing Date:** 2026-2
**Character Count:** 6969
**Document Hash:** 77014edecb5694fb5e6dcbba2f7ac6e5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001829126-26-001084.hdr.sgml**: 20260206

**ACCESSION NUMBER**: 0001829126-26-001084

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260205

**FILED AS OF DATE**: 20260206

**DATE AS OF CHANGE**: 20260206

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Antony Prabhu
- **CENTRAL INDEX KEY:** 0001853814

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42871
- **FILM NUMBER:** 26609326

**MAIL ADDRESS:**
- **STREET 1:** 1104 LINNEA LN
- **CITY:** SOUTHLAKE
- **STATE:** TX
- **ZIP:** 76092
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** StoneBridge Acquisition II Corp
- **CENTRAL INDEX KEY:** 0002043630
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** ONE WORLD TRADE CENTER
- **STREET 2:** SUITE 8500
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10007
- **BUSINESS PHONE:** 646-314-3555

**MAIL ADDRESS:**
- **STREET 1:** ONE WORLD TRADE CENTER
- **STREET 2:** SUITE 8500
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10007

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Antony Prabhu<br><sub>(Last) (First) (Middle)</sub><br>ONE WORLD TRADE CENTER, SUITE 8500<br><sub>(Street)</sub><br>NEW YORK, NY 10007<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-05 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Financial Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>StoneBridge Acquisition II Corp [ APAC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B Ordinary Shares<sup>(2)</sup> | <sup>(1)</sup> | 2026-02-05 |  | A |  |  | 100000 | <sup>(1)</sup> | <sup>(1)</sup> | Class A Ordinary Shares | 100000 | <sup>(1)</sup> | 991667<sup>(2)</sup> | I | See footnote<sup>(2)</sup> |

---

### Footnotes:

(1) 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 Issuer's sponsor, StoneBridge Acquisition Sponsor II LLC (the "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.

(2) The shares were, and are, as applicable, directly held by the Sponsor. The reporting person is a member of BP SPAC Sponsor II LLC, the sole managing member of the Sponsor. As such, the reporting person has voting and investment discretion with respect to the ordinary shares held of record by the Sponsor and may be deemed to have shared beneficial ownership of the ordinary shares held directly by the Sponsor. The reporting person disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

**Signature:** /s/ Prabhu Antony  
**Date:** 2026-02-06

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**