---
schema_version: "secwatch.filing_event.v1"
accession: "0001829126-25-007897"
form_type: "8-K"
ticker: "APAC"
cik: "0002043630"
company_name: "StoneBridge Acquisition II Corp"
filed_at: "2025-10-06T23:59:59+00:00"
generated_at: "2026-05-17T04:39:17.113069+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# StoneBridge Acquisition II closes $57.5M IPO, $1.5M private placement priced

## Summary
- IPO of 5,750,000 units at $10.00 per unit, gross proceeds $57.5M; over-allotment fully exercised (750,000 units).
- Private placement of 153,750 private units at $10.00 each to sponsor and at-risk capital investors for $1.5375M.
- Proceeds ($57.5M) placed in trust account with Continental Stock Transfer & Trust; funds to be released only upon business combination or redemption.
- Independent directors appointed: Richard Saldanha, Joel Huffman, Roshan Boodhoo; Boodhoo chairs audit committee, Huffman chairs compensation committee.
- Sponsor forfeited 825,000 founder shares; at-risk investors purchased 825,000 founder shares at ~$0.013 per share.

## SEC filing metadata
- accession: 0001829126-25-007897
- form_type: 8-K
- ticker: APAC
- cik: 0002043630
- company_name: StoneBridge Acquisition II Corp
- filed_at: 2025-10-06T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 3.02, 5.02, 5.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2043630/000182912625007897/0001829126-25-007897-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2043630/000182912625007897/stonebridgeacq2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001829126-25-007897
- JSON: https://secwatch.observer/filing/0001829126-25-007897.json
- Plain text: https://secwatch.observer/filing/0001829126-25-007897.txt

## Key facts
- Equity Issuances
  StoneBridge Acquisition II Corp issued an aggregate of 153,750 private placement units of unit to the Sponsor and the at-risk capital investors for $10.00 per Private Unit.
  - Security: unit
  - Shares: an aggregate of 153,750 private placement units
  - Purchaser: the Sponsor and the at-risk capital investors
  - Consideration: $10.00 per Private Unit
  source text: Simultaneously with the closing of the IPO, pursuant to the Sponsor Units Purchase Agreement and Subscription Agreements, as applicable, the Company completed the private sale of an aggregate of 153,750 private placement units (the “Private Units”), consisting of (i) 68,750 Private Units to the Sponsor and (ii) 85,000 Private Units to the at-risk capital investors, which were sold at a purchase price of $10.00 per Private Unit, generating aggregate gross proceeds to the Company of $1,537,500.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2043630/000182912625007897/0001829126-25-007897-index.htm
- Equity Issuances
  StoneBridge Acquisition II Corp issued 5,750,000 Class B ordinary shares of the Company of common stock to Sponsor for an aggregate purchase price of $25,000.
  - Security: common stock
  - Shares: 5,750,000 Class B ordinary shares of the Company
  - Purchaser: Sponsor
  - Consideration: an aggregate purchase price of $25,000
  source text: Prior to the IPO, on August 27, 2024, the Sponsor acquired from the Company an aggregate of 5,750,000 Class B ordinary shares of the Company, par value $0.0001 per share (the “founder shares”), for an aggregate purchase price of $25,000, or approximately $0.004 per share.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2043630/000182912625007897/0001829126-25-007897-index.htm
- Equity Issuances
  StoneBridge Acquisition II Corp issued an aggregate of 825,000 founder shares of common stock to at-risk capital investors for an aggregate purchase price of approximately $10,760, or approximately $0.013 per share.
  - Security: common stock
  - Shares: an aggregate of 825,000 founder shares
  - Purchaser: at-risk capital investors
  - Consideration: an aggregate purchase price of approximately $10,760, or approximately $0.013 per share
  source text: On September 30, 2025, the Sponsor forfeited an additional 825,000 founder shares, and at-risk capital investors purchased an aggregate of 825,000 founder shares pursuant to the Subscription Agreements (with the Maxim individuals purchasing 215,000 of such founder shares and the third-party investors purchasing 610,000 of such founder shares) at an aggregate purchase price of approximately $10,760, or approximately $0.013 per share
  evidence_url: https://www.sec.gov/Archives/edgar/data/2043630/000182912625007897/0001829126-25-007897-index.htm
- Governance Changes
  StoneBridge Acquisition II Corp: Adopted amended certificate of incorporation in connection with IPO (effective 2025-09-29).
  - Change: charter amendment
  - Effective: 2025-09-29
  source text: In connection with the IPO, the Company adopted its Amended Charter on September 29, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2043630/000182912625007897/0001829126-25-007897-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.