17 insiders reported 105 Form 4 transactions for MARKEL GROUP INC. (MKL) over the past 18 months (most recent 2026-07-16). Recent activity: Costanzo Brian J. (Chief Financial Officer) Buy 2 shares, Crowley Andrew G. (EVP & Pres., Markel Ventures) Buy 3 shares, Crowley Andrew G. (EVP & Pres., Markel Ventures) Buy 7 shares, MICHAEL JONATHAN E (Director) Buy 66 shares, OREILLY MICHAEL (Director) Buy 90 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-16 | Costanzo Brian J. | Chief Financial Officer | Buy | 2 | $3,500 |
| 2026-07-16 | Crowley Andrew G. | EVP & Pres., Markel Ventures | Buy | 3 | $4,555 |
| 2026-07-16 | Crowley Andrew G. | EVP & Pres., Markel Ventures | Buy | 7 | $12,945 |
| 2026-06-17 | MICHAEL JONATHAN E | Director | Buy | 66 | $110,000 |
| 2026-06-17 | OREILLY MICHAEL | Director | Buy | 90 | $150,000 |
| 2026-06-17 | Morrison Harold Lawrence Jr. | Director | Buy | 33 | $55,000 |
| 2026-06-17 | Puckett A. Lynne | Director | Buy | 66 | $110,000 |
| 2026-06-17 | Leopold Diane | Director | Buy | 66 | $110,000 |
| 2026-06-17 | Cunningham Lawrence A | Director | Buy | 33 | $55,000 |
| 2026-06-17 | Besca Mark | Director | Buy | 81 | $135,000 |
| 2026-06-17 | Housel Morgan E. | Director | Buy | 66 | $110,000 |
| 2026-05-27 | Harris Greta J | Director | Sell | 14 | $25,863 |
| 2026-05-27 | Harris Greta J | Director | Sell | 35 | $64,614 |
| 2026-05-27 | Harris Greta J | Director | Sell | 27 | $49,918 |
| 2026-05-22 | MICHAEL JONATHAN E | Director | Buy | 89 | $0 |
| 2026-05-22 | OREILLY MICHAEL | Director | Buy | 89 | $0 |
| 2026-05-22 | Morrison Harold Lawrence Jr. | Director | Buy | 89 | $0 |
| 2026-05-22 | Puckett A. Lynne | Director | Buy | 89 | $0 |
| 2026-05-22 | Leopold Diane | Director | Buy | 89 | $0 |
| 2026-05-22 | Cunningham Lawrence A | Director | Buy | 89 | $0 |
| 2026-05-22 | Besca Mark | Director | Buy | 89 | $0 |
| 2026-05-22 | Harris Greta J | Director | Buy | 89 | $0 |
| 2026-05-22 | Housel Morgan E. | Director | Buy | 89 | $0 |
| 2026-05-19 | GAYNER THOMAS SINNICKSON | Chief Executive Officer | Sell | 482 | $888,196 |
| 2026-05-19 | Grinnan Richard Randolph | SVP, Chief Legal Officer & Sec | Sell | 116 | $214,564 |
Source: SEC Form 4 filings · as of 2026-07-16