MKTX (MarketAxess Holdings Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by MKTX 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.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-13 | Emily Hope Portney | Director | G | — | — |
| 2026-08-10 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2026-08-07 | Jane Chwick | Director | G | — | — |
| 2026-08-07 | Jane Chwick | Director | G | — | — |
| 2026-07-10 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2026-06-18 | CARLOS MAURICIO HERNANDEZ | Director | G | — | — |
| 2026-06-12 | KENNETH T SCHICIANO | Director | A | — | — |
| 2026-06-12 | Jane Chwick | Director | A | — | — |
| 2026-06-12 | Douglas A Cifu | Director | A | — | — |
| 2026-06-12 | CARLOS MAURICIO HERNANDEZ | Director | A | — | — |
| 2026-06-12 | William Frank Jr. Cruger | Director | A | — | — |
| 2026-06-12 | RICHARD G KETCHUM | Director | A | — | — |
| 2026-06-12 | Emily Hope Portney | Director | A | — | — |
| 2026-06-12 | Roberto Hoornweg | Director | A | — | — |
| 2026-06-12 | Nancy A. Altobello | Director | A | — | — |
| 2026-06-12 | Steven L Begleiter | Director | A | — | — |
| 2026-06-12 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2026-06-12 | Kourtney Gibson | Director | A | — | — |
| 2026-06-03 | Bieler Ilene Fiszel | Chief Financial Officer | F | — | — |
| 2026-05-11 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2026-05-04 | William Quan | Chief Technology Officer | A | — | — |
| 2026-04-10 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2026-04-06 | CHRISTOPHER R CONCANNON | Chief Executive Officer | F | — | — |
| 2026-03-10 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2026-03-02 | Naineshkumar Shantilal Panchal | Chief Information Officer | F | — | — |
| 2026-03-02 | KENNETH T SCHICIANO | Director | A | — | — |
| 2026-03-02 | Douglas A Cifu | Director | A | — | — |
| 2026-02-17 | Nitin A Mirwani | Chief Accounting Officer | A | — | — |
| 2026-02-17 | Kevin M McPherson | Chief Revenue Officer | MIXED | — | — |
| 2026-02-17 | Naineshkumar Shantilal Panchal | Chief Information Officer | MIXED | — | — |
| 2026-02-17 | Scott Pintoff | General Counsel and Secretary | MIXED | — | — |
| 2026-02-17 | Bieler Ilene Fiszel | Chief Financial Officer | MIXED | — | — |
| 2026-02-17 | CHRISTOPHER R CONCANNON | Chief Executive Officer | MIXED | — | — |
| 2026-02-10 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2026-01-12 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2025-12-12 | Scott Pintoff | General Counsel and Secretary | Sell | — | — |
| 2025-11-26 | CARLOS MAURICIO HERNANDEZ | Director | G | — | — |
| 2025-10-02 | Dean Berry | Group COO & CEO, EMEA & APAC | A | — | — |
| 2025-09-15 | Kevin M McPherson | Chief Revenue Officer | Sell | — | — |
| 2025-09-09 | Stephen P Casper | Director | Sell | — | — |
| 2025-08-15 | Emily Hope Portney | Director | G | — | — |
| 2025-06-11 | Kevin M McPherson | Chief Revenue Officer | Sell | — | — |
| 2025-06-05 | Steven L Begleiter | Director | A | — | — |
| 2025-06-05 | CARLOS MAURICIO HERNANDEZ | Director | A | — | — |
| 2025-06-05 | William Frank Jr. Cruger | Director | A | — | — |
| 2025-06-05 | Kourtney Gibson | Director | A | — | — |
| 2025-06-05 | Jane Chwick | Director | A | — | — |
| 2025-06-05 | Roberto Hoornweg | Director | A | — | — |
| 2025-06-05 | RICHARD G KETCHUM | Director | A | — | — |
| 2025-06-05 | Stephen P Casper | Director | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 2,282,028 | — |
| — | Director | 1,294,066 | — |
| — | Executive Chairman | 574,179 | — |
| — | President | 270,629 | — |
| — | See remarks | 214,447 | — |
| — | Chief Revenue Officer | 72,574 | — |
| — | Chief Executive Officer | 53,600 | — |
| — | Director | 53,193 | — |
| — | Director | 34,981 | — |
| — | Director | 28,696 | — |
| — | Global Head of Corp. Dev. | 27,312 | — |
| — | Group COO & CEO, EMEA & APAC | 26,017 | — |
| — | Director | 25,586 | — |
| — | Director | 22,545 | — |
| — | Director | 21,313 | — |
| — | Director | 17,307 | — |
| — | Director | 17,161 | — |
| — | Director | 12,500 | — |
| — | Director | 12,074 | — |
| — | General Counsel and Secretary | 11,586 | — |
| — | Chief Information Officer | 11,331 | — |
| — | 10%+ Owner | 10,864 | — |
| — | Director | 10,346 | — |
| — | Director | 10,197 | — |
| — | Chief Information Officer | 9,693 | — |
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 MKTX quote page; the site-wide leaderboard is on the insider transactions hub.