Markel Group Inc (MKL) insider trading
Every open-market stock purchase and sale by Markel Group Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders bought $371K over the last 12 months (2 buys).
- Insiders sold $3.4M over the last 12 months (5 sales).
- Last insider buy: Diane Leopold (Director), $89.5K, 6 months ago.
- Congress: April McClain Delaney sold $100K to $250K, 8 weeks ago.
Last 12 months: insiders bought $371K (2 buys) and sold $3.4M (5 sales). Last close $1,872 on Oct 21, 2026.
Recent MKL insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 30, 2026 | Brian J. Costanzo (CFO) | Bought (not open market) | $3K |
| Aug 25, 2026 | April McClain Delaney (Representative) | Sold | $100K–250K |
| Jul 29, 2026 | April McClain Delaney (Representative) | Sold | $1K–15K |
| Jul 28, 2026 | April McClain Delaney (Representative) | Sold | $1K–15K |
| Jul 27, 2026 | April McClain Delaney (Representative) | Sold | $1K–15K |
| Jul 24, 2026 | April McClain Delaney (Representative) | Sold | $1K–15K |
| Jul 15, 2026 | Andrew G. Crowley (VP) | Bought (not open market) | $12.9K |
| Jun 30, 2026 | Andrew G. Crowley (VP) | Bought (not open market) | $4.6K |
| Jun 30, 2026 | Brian J. Costanzo (CFO) | Bought (not open market) | $3.5K |
| Jun 29, 2026 | Thomas H. Kean (Representative) | Sold | $1K–15K |
| Jun 15, 2026 | Michael Oreilly (Director) | Bought (not open market) | $150K |
| Jun 15, 2026 | Mark Besca (Director) | Bought (not open market) | $135K |
| Jun 15, 2026 | A. Lynne Puckett (Director) | Bought (not open market) | $110K |
| Jun 15, 2026 | Morgan E. Housel (Director) | Bought (not open market) | $110K |
| Jun 15, 2026 | Jonathan E Michael (Director) | Bought (not open market) | $110K |
| Jun 15, 2026 | Diane Leopold (Director) | Bought (not open market) | $110K |
| Jun 15, 2026 | Harold Lawrence Morrison Jr. (Director) | Bought (not open market) | $55K |
| Jun 15, 2026 | Lawrence A Cunningham (Director) | Bought (not open market) | $55K |
| Jun 2, 2026 | Thomas H. Kean (Representative) | Sold | $1K–15K |
| May 22, 2026 | Greta J Harris (Director) | Sold | $64.6K |
| May 22, 2026 | Greta J Harris (Director) | Sold | $49.9K |
| May 22, 2026 | Greta J Harris (Director) | Sold | $25.9K |
| May 20, 2026 | Greta J Harris (Director) | Bought (not open market) | — |
| May 20, 2026 | Morgan E. Housel (Director) | Bought (not open market) | — |
| May 20, 2026 | Diane Leopold (Director) | Bought (not open market) | — |
Who's trading MKL
- Brian J. Costanzo, CFO: other filings, last Sep 30, 2026
- April McClain Delaney, Representative: bought $24K (3 buys), sold $132K (5 sales), last Aug 25, 2026
- Andrew G. Crowley, President: other filings, last Jul 15, 2026
- Thomas H. Kean, Representative: sold $31K (3 sales), last Jun 29, 2026
- Jonathan E Michael, Director: other filings, last Jun 15, 2026
- Mark Besca, Director: other filings, last Jun 15, 2026
- Lawrence A Cunningham, Director: other filings, last Jun 15, 2026
- Diane Leopold, Director: bought $269K (2 buys), last Jun 15, 2026
- Michael Oreilly, Director: other filings, last Jun 15, 2026
- Harold Lawrence Morrison Jr., Director: other filings, last Jun 15, 2026
- Morgan E. Housel, Director: other filings, last Jun 15, 2026
- A. Lynne Puckett, Director: bought $102K (1 buy), last Jun 15, 2026
- Greta J Harris, Director: sold $140K (3 sales), last May 22, 2026
- Richard Randolph Grinnan, C-suite exec: other filings, last May 15, 2026
- Thomas Sinnickson Gayner, CEO: other filings, last May 15, 2026
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