SNEX · Insider Trading
StoneX Group Inc. Common Stock
Every open-market purchase and sale reported by SNEX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-11-02 | Anthony J DiCiollo | Head of Institutional Segment | A | +6,604 | — |
| 2026-11-02 | Diane L. Cooper | Director | A | +164 | — |
| 2026-11-02 | Steven A Kass | Director | A | +246 | — |
| 2026-11-02 | John Moore Fowler | Director | MIXED | +138 | −$5.71K |
| 2026-11-02 | Dhamu R. Thamodaran | Director | A | +201 | — |
| 2026-11-02 | John Radziwill | Chairman of the Board | A | +310 | — |
| 2026-10-15 | Philip Andrew Smith | Chief Executive Officer | MIXED | — | −$2.28M |
| 2026-10-14 | Mark Lowry Maurer | — | MIXED | +16,419 | −$2.58M |
| 2026-10-13 | Sean Michael Oconnor | Executive Vice-Chairman-Board | MIXED | +81,352 | −$3.19M |
| 2026-09-29 | Philip Andrew Smith | Chief Executive Officer | MIXED | — | −$3.19M |
| 2026-09-16 | Abigail H Perkins | Chief Information Officer | Sell | −8,924 | −$614.22K |
| 2026-09-16 | Diego Rotsztain | Chief Governance/Legal Officer | MIXED | — | −$2.83M |
| 2026-09-15 | Mark Lowry Maurer | — | MIXED | −33,720 | −$6.39M |
| 2026-09-11 | Charles M Lyon | President | G | −500 | — |
| 2026-08-17 | William J Dunaway | Chief Financial Officer | MIXED | +30,072 | −$5.28M |
| 2026-08-11 | Abigail H Perkins | Chief Information Officer | MIXED | — | −$236.49K |
| 2026-08-11 | Dhamu R. Thamodaran | Director | Buy | +2,500 | +$161.21K |
| 2026-08-11 | Mark Lowry Maurer | — | MIXED | +16,724 | −$2.87M |
| 2026-08-06 | John Moore Fowler | Director | Sell | −1,575 | −$118.77K |
| 2026-08-05 | Diane L. Cooper | Director | A | +116 | — |
| 2026-08-05 | John Radziwill | Chairman of the Board | A | +219 | — |
| 2026-08-05 | John Moore Fowler | Director | MIXED | −23 | −$15.29K |
| 2026-08-03 | Dhamu R. Thamodaran | Director | A | +142 | — |
| 2026-08-03 | John Moore Fowler | Director | MIXED | −56 | −$17.85K |
| 2026-08-03 | Steven A Kass | Director | A | +174 | — |
| 2026-07-27 | Diego Rotsztain | Chief Governance/Legal Officer | Sell | −20,630 | −$1.53M |
| 2026-07-23 | Philip Andrew Smith | Chief Executive Officer | MIXED | — | −$2.94M |
| 2026-07-23 | Mark Lowry Maurer | — | MIXED | +16,996 | −$3.28M |
| 2026-07-23 | William J Dunaway | Chief Financial Officer | MIXED | +30,593 | −$6.01M |
| 2026-07-23 | Sean Michael Oconnor | Executive Vice-Chairman-Board | MIXED | +120,066 | −$5.80M |
| 2026-07-23 | Diego Rotsztain | Chief Governance/Legal Officer | MIXED | +20,630 | −$1.61M |
| 2026-07-21 | Abigail H Perkins | Chief Information Officer | Sell | −8,919 | −$628.15K |
| 2026-07-16 | Annabelle G Bexiga | Director | Sell | −1,500 | −$170.88K |
| 2026-07-01 | Philip Andrew Smith | Chief Executive Officer | MIXED | −14,040 | −$5.62M |
| 2026-06-17 | Mark Lowry Maurer | — | MIXED | — | −$5.62M |
| 2026-06-16 | Annabelle G Bexiga | Director | Sell | −1,500 | −$200.04K |
| 2026-06-16 | Charles M Lyon | President | Sell | −9,000 | −$1.19M |
| 2026-06-16 | Sean Michael Oconnor | Executive Vice-Chairman-Board | Sell | −150,000 | −$19.99M |
| 2026-06-15 | Abigail H Perkins | Chief Information Officer | G | −2,000 | — |
| 2026-06-15 | William J Dunaway | Chief Financial Officer | MIXED | +20,773 | −$7.22M |
| 2026-06-09 | Abigail H Perkins | Chief Information Officer | MIXED | — | −$431.73K |
| 2026-05-26 | Philip Andrew Smith | Chief Executive Officer | Sell | −8,535 | −$962.09K |
| 2026-05-26 | Mark Lowry Maurer | — | Sell | −11,398 | −$1.28M |
| 2026-05-20 | Diego Rotsztain | Chief Governance/Legal Officer | MIXED | — | −$3.16M |
| 2026-05-20 | Diego Rotsztain | Chief Governance/Legal Officer | MIXED | — | −$3.16M |
| 2026-05-19 | Sean Michael Oconnor | Executive Vice-Chairman-Board | MIXED | — | −$29.16M |
| 2026-05-18 | Annabelle G Bexiga | Director | Sell | −1,500 | −$169.23K |
| 2026-05-18 | William J Dunaway | Chief Financial Officer | MIXED | +20,358 | −$5.95M |
| 2026-05-15 | Mark Lowry Maurer | — | MIXED | +11,398 | −$3.44M |
| 2026-05-13 | Aaron Schroeder | Chief Accounting Officer | Sell | −3,500 | −$429.27K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Sean Michael Oconnor | Executive Vice-Chairman-Board | 2,468,328 | $140.28M |
| John Radziwill | Chairman of the Board | 2,381,265 | $135.33M |
| Philip Andrew Smith | Chief Executive Officer | 783,216 | $44.51M |
| William J Dunaway | Chief Financial Officer | 598,693 | $34.02M |
| Charles M Lyon | President | 324,242 | $18.43M |
| Mark Lowry Maurer | — | 272,616 | $15.49M |
| Glenn Henry Stevens | — | 263,128 | $14.95M |
| John Moore Fowler | Director | 262,159 | $14.90M |
| Anthony J DiCiollo | Head of Institutional Segment | 169,390 | $9.63M |
| Abigail H Perkins | Chief Information Officer | 88,496 | $5.03M |
| Dhamu R. Thamodaran | Director | 81,609 | $4.64M |
| Steven A Kass | Director | 80,319 | $4.56M |
| Aaron Schroeder | Chief Accounting Officer | 77,222 | $4.39M |
| Eric Parthemore | Director | 65,811 | $3.74M |
| Diane L. Cooper | Director | 56,266 | $3.20M |
| Diego Rotsztain | Chief Governance/Legal Officer | 55,168 | $3.14M |
| Annabelle G Bexiga | Director | 28,032 | $1.59M |
| Stuart Davison | Chief Operating Officer | 26,188 | $1.49M |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the SNEX quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.