MIZUHO SECURITIES USA LLC - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
MIZUHO SECURITIES USA LLC is a corporate entity tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market sales: $15.33M.
Profile
MIZUHO SECURITIES USA LLC is a corporate entity that reports beneficial ownership of shares in StoneBridge Acquisition II Corp (APAC) and 4 other companies under U.S. securities law. It has submitted 6 SEC insider filings since 2024, most recently in November 2025.
| Filer type | Company |
|---|---|
| Role | 10% Owner |
| Notability | 20/100 |
Board memberships
- StoneBridge Acquisition II Corp
- Nabors Energy Transition Corp. II
- Oak Woods Acquisition Corp
- Eureka Acquisition Corp
- Integrated Wellness Acquisition Corp
Reported roles
- 10% Owner
- 10% Owner
- 10% Owner
- 10% Owner
- 10% Owner
Trading Pattern
InsiderAlpha's records for MIZUHO SECURITIES USA LLC go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role MIZUHO SECURITIES USA LLC has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- 10% Owner at StoneBridge Acquisition II Corp (APAC) - 1 filing, 2025
- 10% Owner at Nabors Energy Transition Corp. II (NETD) - 1 filing, 2025
- 10% Owner at Oak Woods Acquisition Corp (OAKU) - 2 filings, 2024 to 2025
- 10% Owner at Eureka Acquisition Corp (EURK) - 1 filing, 2025
- 10% Owner at Integrated Wellness Acquisition Corp (WEL) - 1 filing, 2024
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-11-25 | APAC | StoneBridge Acquisition II Corp | S - Open-market sale | 531.3K | $9.95 | $5.29M |
| 2025-07-22 | NETD | Nabors Energy Transition Corp. II | S - Open-market sale | 565.0K | $11.18 | $6.32M |
| 2025-07-17 | OAKU | Oak Woods Acquisition Corp | S - Open-market sale | 61.1K | $11.91 | $728K |
| 2025-07-15 | EURK | Eureka Acquisition Corp | S - Open-market sale | 92.0K | $10.54 | $970K |
| 2025-07-15 | EURK | Eureka Acquisition Corp | S - Open-market sale | 40.6K | $10.55 | $428K |
| 2024-12-11 | WEL | Integrated Wellness Acquisition Corp | S - Open-market sale | 65.0K | $11.95 | $777K |
| 2024-10-09 | OAKU | Oak Woods Acquisition Corp | S - Open-market sale | 74.0K | $11.18 | $827K |
Most Active Insiders Right Now
MIZUHO SECURITIES USA LLC has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Arturo R. Moreno
- Matthew T. Moroun
- Dustin A. Moskovitz
- MPM BIOVENTURES 2018, L.P.
- MSD CAPITAL, L.P.
- Mubadala Investment Co PJSC
- Elon Musk
- Joseph R. Nerges
Frequently Asked Questions
What is MIZUHO SECURITIES USA LLC?
MIZUHO SECURITIES USA LLC is a corporate entity that reports beneficial ownership of shares in StoneBridge Acquisition II Corp (APAC) and 4 other companies under U.S. securities law. It has submitted 6 SEC insider filings since 2024, most recently in November 2025.…
Has MIZUHO SECURITIES USA LLC been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($15.33M) across all tracked filings.
Where can I see all of MIZUHO SECURITIES USA LLC's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live MIZUHO SECURITIES USA LLC profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.