| X | Filing Date | Trade Date | Ticker | Insider Name | Title | Trade Type | Price | Qty | Owned | ΔOwn | Value | 1d | 1w | 1m | 6m | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-09-08 | MKTX | Casper Stephen P | Dir | S - Sale | $186.59 | -1,600 | 53,193 | -3% | -$298,544 | ||||||
| 2024-09-06 | MKTX | Casper Stephen P | Dir | S - Sale | $259.39 | -1,000 | 54,009 | -2% | -$259,390 | ||||||
| 2024-06-07 | MKTX | Casper Stephen P | Dir | S - Sale | $199.48 | -500 | 55,009 | -1% | -$99,740 | 
| A | Amended filing | 
| D | Derivative transaction in filing (usually option exercise) | 
| E | Error detected in filing | 
| M | Multiple transactions in filing; earliest reported transaction date and weighted average transaction price | 
| S - Sale | Sale of securities on an exchange or to another person | 
| S - Sale+OE | Sale of securities on an exchange or to another person (after option exercise) | 
| F - Tax | Payment of exercise price or tax liability using portion of securities received from the company | 
| P - Purchase | Purchase of securities on an exchange or from another person |