StoneX Group Inc. (SNEX) has 20 known insider and institutional holders on record. The largest holder is OCONNOR SEAN MICHAEL with 1,236,921 shares. Other notable holders include BRANCH SCOTT J and Smith Philip Andrew.
Over the last 12 months, insiders have made 71 transactions in SNEX stock — 35 buys (valued at $216.25K) and 26 sells (valued at $35.36M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
SNEX Insider Ownership
Top Holder
OCONNOR SEAN MICHAEL
1,236,921 shares
Buys (12 mo)
35
$216.25K value
Sells (12 mo)
26
$35.36M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Oconnor Sean Michael |
Executive Vice-chairman-board |
1,236,921 |
2026-04-02 |
|
| 2 |
Branch Scott J |
Other: Retired Director |
512,434 |
2024-03-15 |
|
| 3 |
Smith Philip Andrew |
Chief Executive Officer |
341,154 |
2025-12-17 |
|
| 4 |
Dunaway William J |
Chief Financial Officer |
168,819 |
2025-12-17 |
|
| 5 |
Lyon Charles M |
President |
150,330 |
2026-02-10 |
|
| 6 |
Fowler John Moore |
Director |
114,866 |
2026-03-12 |
|
| 7 |
Sephton Brian T |
Chief Legal Officer |
108,137 |
2018-07-19 |
|
| 8 |
Radziwill John |
Chairman of the Board |
102,849 |
2026-03-12 |
|
| 9 |
Maurer Mark Lowry |
Other: Chief Risk Officer |
90,331 |
2026-02-11 |
|
| 10 |
Stevens Glenn Henry |
Other: Retired Officer |
77,964 |
2025-02-20 |
|
| 11 |
Nguyen Xuong |
Other: Retired Officer |
60,816 |
2024-07-16 |
|
| 12 |
Wilde Malcolm James |
Officer |
60,000 |
2016-12-19 |
|
| 13 |
Perkins Abigail H |
Chief Information Officer |
48,259 |
2026-02-18 |
|
| 14 |
Kass Steven A |
Director |
36,757 |
2026-03-12 |
|
| 15 |
Schroeder Aaron |
Chief Accounting Officer |
36,654 |
2025-12-17 |
|
| 16 |
Thamodaran Dhamu R. |
Director |
34,936 |
2026-03-12 |
|
| 17 |
Parthemore Eric |
Director |
30,916 |
2026-03-12 |
|
| 18 |
Krehbiel Bruce |
Director |
30,299 |
2022-02-01 |
|
| 19 |
Cooper Diane L. |
Director |
24,825 |
2026-03-12 |
|
| 20 |
Anderson Paul G |
Director |
24,187 |
2018-07-05 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-31 |
Oconnor Sean Michael |
Executive Vice-chairman-board |
Tax Withholding of RSU |
44,269 |
$77.95 |
$3.45M |
| 2026-03-13 |
Bexiga Annabelle G |
Director |
Informative Sell |
1,000 |
$106.54 |
$106.54K |
| 2026-03-10 |
Cooper Diane L. |
Director |
RSU Award |
1,101 |
- |
- |
| 2026-03-10 |
Kass Steven A |
Director |
RSU Award |
1,101 |
- |
- |
| 2026-03-10 |
Bexiga Annabelle G |
Director |
RSU Award |
1,101 |
- |
- |
| 2026-03-10 |
Thamodaran Dhamu R. |
Director |
RSU Award |
1,101 |
- |
- |
| 2026-03-10 |
Fowler John Moore |
Director |
RSU Award |
1,101 |
- |
- |
| 2026-03-10 |
Parthemore Eric |
Director |
RSU Award |
1,101 |
- |
- |
| 2026-03-10 |
Radziwill John |
Chairman of the Board |
RSU Award |
1,101 |
- |
- |
| 2026-02-13 |
Perkins Abigail H |
Chief Information Officer |
Informative Sell |
8,000 |
$126.72 |
$1.01M |
| 2026-02-09 |
Maurer Mark Lowry |
Other: Chief Risk Officer |
Informative Sell |
40,000 |
$124.88 |
$5M |
| 2026-02-10 |
Oconnor Sean Michael |
Executive Vice-chairman-board |
Informative Sell |
40,000 |
$124.56 |
$4.98M |
| 2026-02-09 |
Oconnor Sean Michael |
Executive Vice-chairman-board |
Informative Sell |
40,000 |
$124.95 |
$5M |
| 2026-02-09 |
Lyon Charles M |
President |
Informative Sell |
30,000 |
$124.78 |
$3.74M |
| 2026-02-02 |
Fowler John Moore |
Director |
Informative Sell |
1,125 |
$112.70 |
$126.79K |
| 2026-01-30 |
Cooper Diane L. |
Director |
RSU Award |
81 |
- |
- |
| 2026-01-30 |
Kass Steven A |
Director |
RSU Award |
121 |
- |
- |
| 2026-01-30 |
Thamodaran Dhamu R. |
Director |
RSU Award |
99 |
- |
- |
| 2026-01-30 |
Fowler John Moore |
Director |
RSU Award |
121 |
- |
- |
| 2026-01-30 |
Radziwill John |
Chairman of the Board |
RSU Award |
152 |
- |
- |
| 2025-09-30 |
Smith Philip Andrew |
Officer |
Unknown |
- |
- |
- |
| 2025-12-19 |
Rotsztain Diego |
Chief Governance/legal Officer |
Informative Sell |
2,029 |
$94.50 |
$191.73K |
| 2025-12-18 |
Rotsztain Diego |
Chief Governance/legal Officer |
Informative Sell |
2,477 |
$94.91 |
$235.1K |
| 2025-12-17 |
Rotsztain Diego |
Chief Governance/legal Officer |
Informative Sell |
1,348 |
$96.17 |
$129.64K |
| 2025-12-16 |
Radziwill John |
Chairman of the Board |
Informative Buy |
1,000 |
$97.25 |
$97.25K |
