Markel Group Inc. (MKL) Insider Trading
Directors, officers and holders of more than 10% of MKL report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 188 transactions on file: 3 with code P, 10 with code S and 37 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | Costanzo Brian J. | Chief Financial Officer | J Other | 2 | $1455.58 | $3,000 |
| Jul 15, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | J Other | 7 | $1730.49 | $12,945 |
| Jun 30, 2026 | Costanzo Brian J. | Chief Financial Officer | J Other | 2 | $1617.19 | $3,500 |
| Jun 30, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | J Other | 3 | $1617.19 | $4,555 |
| Jun 15, 2026 | MICHAEL JONATHAN E | Director | J Other | 66 | $1668.65 | $110,000 |
| Jun 15, 2026 | Cunningham Lawrence A | Director | J Other | 33 | $1668.65 | $55,000 |
| Jun 15, 2026 | Puckett A. Lynne | Director | J Other | 66 | $1668.65 | $110,000 |
| Jun 15, 2026 | Housel Morgan E. | Director | J Other | 66 | $1668.65 | $110,000 |
| Jun 15, 2026 | Leopold Diane | Director | J Other | 66 | $1668.65 | $110,000 |
| Jun 15, 2026 | Besca Mark | Director | J Other | 81 | $1668.65 | $135,000 |
| Jun 15, 2026 | Morrison Harold Lawrence Jr. | Director | J Other | 33 | $1668.65 | $55,000 |
| Jun 15, 2026 | OREILLY MICHAEL | Director | J Other | 90 | $1668.65 | $150,000 |
| May 22, 2026 | Harris Greta J | Director | S Sale | 35 | $1846.12 | $64,614 |
| May 22, 2026 | Harris Greta J | Director | S Sale | 14 | $1847.36 | $25,863 |
| May 22, 2026 | Harris Greta J | Director | S Sale | 27 | $1848.83 | $49,918 |
| May 20, 2026 | Besca Mark | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | Harris Greta J | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | Morrison Harold Lawrence Jr. | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | MICHAEL JONATHAN E | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | Cunningham Lawrence A | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | Puckett A. Lynne | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | Leopold Diane | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | OREILLY MICHAEL | Director | A Award | 89 | Not measured | Not measured |
| May 20, 2026 | Housel Morgan E. | Director | A Award | 89 | Not measured | Not measured |
| May 15, 2026 | Costanzo Brian J. | Chief Financial Officer | F Tax Payment | 13 | $1844.00 | $24,120 |
| May 15, 2026 | Grinnan Richard Randolph | SVP, Chief Legal Officer & Sec | F Tax Payment | 116 | $1844.00 | $214,564 |
| May 15, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | J Other | 60 | $1659.60 | $100,000 |
| May 15, 2026 | GAYNER THOMAS SINNICKSON | Chief Executive Officer | F Tax Payment | 482 | $1844.00 | $888,196 |
| May 15, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | F Tax Payment | 75 | $1844.00 | $138,053 |
| May 15, 2026 | Costanzo Brian J. | Chief Financial Officer | J Other | 30 | $1659.60 | $50,000 |
| May 7, 2026 | Leopold Diane | Director | P Purchase | 50 | $1789.19 | $89,460 |
| May 6, 2026 | Leopold Diane | Director | P Purchase | 100 | $1792.61 | $179,261 |
| May 1, 2026 | Puckett A. Lynne | Director | P Purchase | 57 | $1795.53 | $102,345 |
| Mar 31, 2026 | Costanzo Brian J. | Chief Financial Officer | J Other | 2 | $1626.96 | $3,000 |
| Mar 31, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | J Other | 9 | $1626.96 | $15,000 |
| Feb 26, 2026 | Wilson Simon | CEO, Markel Insurance | S Sale | 100 | $2079.48 | $207,948 |
| Feb 24, 2026 | Costanzo Brian J. | Chief Financial Officer | A Award | 655 | Not measured | Not measured |
| Feb 24, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | A Award | 830 | Not measured | Not measured |
| Feb 24, 2026 | Grandis Meade P. | CAO and Controller | A Award | 70 | Not measured | Not measured |
| Feb 24, 2026 | Grinnan Richard Randolph | SVP, Chief Legal Officer & Sec | A Award | 801 | Not measured | Not measured |
| Feb 24, 2026 | GAYNER THOMAS SINNICKSON | Chief Executive Officer | A Award | 4,484 | Not measured | Not measured |
| Feb 24, 2026 | Wilson Simon | CEO, Markel Insurance | A Award | 868 | Not measured | Not measured |
| Feb 17, 2026 | Wilson Simon | CEO, Markel Insurance | F Tax Payment | 47 | $2084.46 | $97,970 |
| Dec 31, 2025 | Costanzo Brian J. | Chief Financial Officer | J Other | 2 | $1602.62 | $3,500 |
| Dec 11, 2025 | MARKEL STEVEN A | Director | S Sale | 64 | $2100.00 | $134,400 |
| Dec 11, 2025 | MARKEL STEVEN A | Director | S Sale | 70 | $2108.27 | $147,579 |
| Dec 11, 2025 | MARKEL STEVEN A | Director | S Sale | 120 | $2114.99 | $253,799 |
| Dec 11, 2025 | MARKEL STEVEN A | Director | S Sale | 50 | $2103.55 | $105,178 |
| Dec 11, 2025 | MARKEL STEVEN A | Director | S Sale | 40 | $2112.03 | $84,481 |
| Dec 11, 2025 | MARKEL STEVEN A | Director | S Sale | 100 | $2116.18 | $211,618 |
The full Form 4 history is on the MKL company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.