Yukihiro Mabuchi - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Yukihiro Mabuchi has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Yukihiro Mabuchi is Senior Managing Corporate EO at SUMITOMO MITSUI FINANCIAL GROUP, INC. (SMFG). Mabuchi has reported 1 insider filing with the SEC since 2026. The most recent filing was in July 2026.
| Role | Senior Managing Corporate EO |
|---|---|
| Notability | 28/100 |
Board memberships
- SUMITOMO MITSUI FINANCIAL GROUP, INC.
Reported roles
- Senior Managing Corporate EO
Trading Pattern
InsiderAlpha's records for Yukihiro Mabuchi go back to 2026: 1 primary Form 4 filing, an average of 1.0 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 Yukihiro Mabuchi 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.
- Senior Managing Corporate EO at SUMITOMO MITSUI FINANCIAL GROUP, INC. (SMFG) - 1 filing, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-28 | SMFG | SUMITOMO MITSUI FINANCIAL GROUP, INC. | D - Derivative transaction | 2.8K | $43.99 | $123K |
| 2026-07-28 | SMFG | SUMITOMO MITSUI FINANCIAL GROUP, INC. | A - Grant or award | 16.6K | - | |
| 2026-07-28 | SMFG | SUMITOMO MITSUI FINANCIAL GROUP, INC. | A - Grant or award | 1.3K | - |
Companies - Last 90 Days
- SUMITOMO MITSUI FINANCIAL GROUP, INC. (SMFG) - 1 filing, last 2026-07-28
Most Active Insiders Right Now
Yukihiro Mabuchi 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:
- George Raymond Zage III
- Payam Zamani
- Mahkam Zanganeh
- A.L. Sarroff Fund, LLC
- ABRAMS CAPITAL MANAGEMENT, L.P.
- Abu Dhabi Investment Authority
- Abu Dhabi Pension Fund
- William A. Ackman
Frequently Asked Questions
Who is Yukihiro Mabuchi?
Yukihiro Mabuchi is Senior Managing Corporate EO at SUMITOMO MITSUI FINANCIAL GROUP, INC. (SMFG). Mabuchi has reported 1 insider filing with the SEC since 2026. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Yukihiro Mabuchi submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Yukihiro Mabuchi'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 Yukihiro Mabuchi profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.