Form 4: Mizuho Securities Reduces StoneBridge II Stake
Insider Transaction Report
Mizuho Securities USA LLC has reported the disposition of 531,255 shares of StoneBridge Acquisition II Corp common stock, reducing its beneficial ownership.
Summary
- Mizuho Securities USA LLC, identified as a 10% owner of StoneBridge Acquisition II Corp (APACU), reported a transaction.
- On November 24, 2025, Mizuho Securities disposed of 531,255 shares of common stock.
- The shares were sold at a price of $9.95 per share.
- Following this transaction, Mizuho Securities USA LLC beneficially owns 100,000 shares of common stock directly.
- The transaction was made pursuant to a Rule 10b5-1(c) plan.
- Mizuho Securities USA LLC has indicated it is no longer subject to Section 16 reporting obligations.
Sentiment
Score: 5
Explanation: The filing is a factual report of an insider transaction and does not inherently convey positive or negative sentiment regarding the company's operational performance or future prospects.
Future Outlook
The filing does not provide specific forward-looking statements or guidance regarding the company's future performance or strategic direction.
Industry Context
This Form 4 filing reports an insider transaction by a significant owner of a Special Purpose Acquisition Company (SPAC). Such transactions are common as SPACs progress through their lifecycle, including de-SPAC transactions or as initial investors rebalance their portfolios. The disposition by a 10% owner can be viewed in the context of portfolio management rather than a direct commentary on the underlying business, though market participants may interpret it differently.
Corporate Governance
| Change Type | Description | Effective Date | Impact Assessment |
|---|---|---|---|
| Trading Plan Disclosure | The transaction was executed pursuant to a Rule 10b5-1(c) plan, which allows insiders to set up a predetermined plan for buying or selling securities to avoid accusations of insider trading. | 11/24/2025 | The use of a 10b5-1 plan indicates a pre-scheduled disposition, suggesting a planned portfolio adjustment rather than a reaction to immediate, non-public information. This enhances transparency regarding insider trading. |
Related Party Transactions
- Mizuho Securities USA LLC, as a 10% owner, is considered a related party to StoneBridge Acquisition II Corp. The disposition of common stock by such a significant shareholder constitutes a related party transaction.
Stakeholder Impact
- Shareholders may interpret the reduction of a 10% owner's stake as a signal, potentially influencing market sentiment regarding the company's valuation or future prospects.
- The transaction's execution under a Rule 10b5-1 plan provides transparency, which can be beneficial for investor confidence by demonstrating adherence to regulatory guidelines for insider trading.
Key Dates
| Date | Description |
|---|---|
| 07/08/2024 | Date of earliest transaction reported on the form, potentially indicating the filing's effective date or a prior event. |
| 11/24/2025 | Transaction Date for the disposition of common stock. |
| 11/24/2025 | Deemed Execution Date for the disposition of common stock. |
| 11/25/2025 | Signature date of the reporting person, Gregory Doig. |
Keywords
StoneBridge Acquisition II Corp, APACU, Mizuho Securities USA LLC, Form 4, Insider Transaction, Beneficial Ownership, Common Stock, SPAC, Rule 10b5-1
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