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.
StoneX Group Inc.
Director · Executive Vice-Chairman-Board
Chief executive roles
StoneX Group Inc.
· CEO/President
Dates unknown
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 |
|---|---|---|---|---|---|
| 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 | $7,799,776 |
| 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 |
| Feb 9, 2026 | StoneX Group Inc. | Option exercise | +40,000 | $20.00 | $800,000 |
| Feb 9, 2026 | StoneX Group Inc. | Open-market sale | −40,000 | $124.95 | $4,998,000 |
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