CONCANNON CHRISTOPHER R (CIK 1251713) reported 5 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-04-06). Recent activity: Sell MKTX (349 shares), Buy MKTX (1,696 shares), Sell MKTX (866 shares), Buy MKTX (6,588 shares), Sell MKTX (1,750 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-06 | MARKETAXESS HOLDINGS INC (MKTX) | Chief Executive Officer | Sell | 349 | $59,840 |
| 2026-02-17 | MARKETAXESS HOLDINGS INC (MKTX) | Chief Executive Officer | Buy | 1,696 | $0 |
| 2026-02-17 | MARKETAXESS HOLDINGS INC (MKTX) | Chief Executive Officer | Sell | 866 | $155,326 |
| 2026-02-17 | MARKETAXESS HOLDINGS INC (MKTX) | Chief Executive Officer | Buy | 6,588 | $0 |
| 2026-02-17 | MARKETAXESS HOLDINGS INC (MKTX) | Chief Executive Officer | Sell | 1,750 | $313,880 |
Source: SEC Form 4 filings · as of 2026-04-06