Sean Michael Oconnor
CEO/President at StoneX Group Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 3 years
- Director since
- 2023
3 years of board service in total across 1 board, counting each seat separately. Longest: StoneX Group Inc., 2 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
StoneX Group Inc. March 10, 202698.5%
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StoneX Group Inc. March 5, 202598.4%
-
StoneX Group Inc. February 27, 202498.0%
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StoneX Group Inc. March 1, 202398.0%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Oct 12, 2026 | StoneX Group Inc. | Option exercise | +157,500 | $8.90 | $1,401,750 |
| Oct 12, 2026 | StoneX Group Inc. | Open-market sale | −76,148 | $60.35 | $4,595,852 |
| Jul 22, 2026 | StoneX Group Inc. | Option exercise | +225,000 | $8.90 | $2,002,500 |
| Jul 22, 2026 | StoneX Group Inc. | Open-market sale | −104,934 | $74.33 | $7,799,744 |
| Jun 15, 2026 | StoneX Group Inc. | Open-market sale | −75,000 | $135.42 | $10,156,500 |
| Jun 12, 2026 | StoneX Group Inc. | Open-market sale | −75,000 | $131.15 | $9,836,250 |
| May 19, 2026 | StoneX Group Inc. | Option exercise | +72,140 | $13.34 | $962,348 |
| May 19, 2026 | StoneX Group Inc. | Open-market sale | −72,140 | $109.94 | $7,931,072 |
| May 18, 2026 | StoneX Group Inc. | Option exercise | +87,790 | $13.34 | $1,171,119 |
| May 18, 2026 | StoneX Group Inc. | Open-market sale | −87,790 | $111.46 | $9,785,073 |
| May 15, 2026 | StoneX Group Inc. | Option exercise | +140,070 | $13.34 | $1,868,534 |
| May 15, 2026 | StoneX Group Inc. | Open-market sale | −140,070 | $110.31 | $15,451,122 |
| Mar 31, 2026 | StoneX Group Inc. | Shares withheld for tax | −44,269 | $77.95 | $3,450,769 |
| Feb 10, 2026 | StoneX Group Inc. | Option exercise | +40,000 | $20.00 | $800,000 |
| Feb 10, 2026 | StoneX Group Inc. | Open-market sale | −40,000 | $124.56 | $4,982,400 |
Questions about Sean Michael Oconnor
What boards is Sean Michael Oconnor on?
Sean Michael Oconnor sits on the board of StoneX Group Inc.
What company is Sean Michael Oconnor the CEO of?
Sean Michael Oconnor is CEO/President of StoneX Group Inc.
How long has Sean Michael Oconnor served on boards?
Our records show at least 3 years of board service across 1 board, the earliest from 2023.
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