16 insiders reported 175 Form 4 transactions for StoneX Group Inc. (SNEX) over the past 18 months (most recent 2026-08-17). Recent activity: Dunaway William J (Chief Financial Officer) Buy 126,562 shares, Dunaway William J (Chief Financial Officer) Sell 96,490 shares, Thamodaran Dhamu R. (Director) Buy 2,500 shares, Maurer Mark Lowry (Insider) Buy 69,372 shares, Perkins Abigail H (Chief Information Officer) Buy 4,500 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Dunaway William J | Chief Financial Officer | Buy | 126,562 | $1.1M |
| 2026-08-17 | Dunaway William J | Chief Financial Officer | Sell | 96,490 | $6.4M |
| 2026-08-11 | Thamodaran Dhamu R. | Director | Buy | 2,500 | $161,206 |
| 2026-08-11 | Maurer Mark Lowry | Insider | Buy | 69,372 | $617,411 |
| 2026-08-11 | Perkins Abigail H | Chief Information Officer | Buy | 4,500 | $55,170 |
| 2026-08-11 | Maurer Mark Lowry | Insider | Sell | 52,648 | $3.5M |
| 2026-08-11 | Perkins Abigail H | Chief Information Officer | Sell | 4,500 | $291,662 |
| 2026-08-06 | FOWLER JOHN MOORE | Director | Sell | 1,575 | $118,771 |
| 2026-08-05 | RADZIWILL JOHN | Chairman of the Board | Buy | 219 | $0 |
| 2026-08-05 | FOWLER JOHN MOORE | Director | Buy | 174 | $0 |
| 2026-08-05 | Cooper Diane L. | Director | Buy | 116 | $0 |
| 2026-08-05 | FOWLER JOHN MOORE | Director | Sell | 197 | $15,291 |
| 2026-08-03 | FOWLER JOHN MOORE | Director | Buy | 174 | $0 |
| 2026-08-03 | Thamodaran Dhamu R. | Director | Buy | 142 | $0 |
| 2026-08-03 | KASS STEVEN A | Director | Buy | 174 | $0 |
| 2026-08-03 | FOWLER JOHN MOORE | Director | Sell | 230 | $17,853 |
| 2026-07-27 | Rotsztain Diego | Chief Governance/Legal Officer | Sell | 20,630 | $1.5M |
| 2026-07-23 | OCONNOR SEAN MICHAEL | Executive Vice-Chairman-Board | Buy | 225,000 | $2.0M |
| 2026-07-23 | Dunaway William J | Chief Financial Officer | Buy | 126,563 | $1.1M |
| 2026-07-23 | Rotsztain Diego | Chief Governance/Legal Officer | Buy | 50,625 | $620,662 |
| 2026-07-23 | Smith Philip Andrew | Chief Executive Officer | Buy | 45,000 | $400,500 |
| 2026-07-23 | Maurer Mark Lowry | Insider | Buy | 69,372 | $617,411 |
| 2026-07-23 | OCONNOR SEAN MICHAEL | Executive Vice-Chairman-Board | Sell | 104,934 | $7.8M |
| 2026-07-23 | Dunaway William J | Chief Financial Officer | Sell | 95,970 | $7.1M |
| 2026-07-23 | Rotsztain Diego | Chief Governance/Legal Officer | Sell | 29,995 | $2.2M |
Source: SEC Form 4 filings · as of 2026-08-17