Markel Corporation (MKL) Insider Trading
Over the last 6 months, 619 institutions increased and 631 reduced their position (13F).
Insider Activity
Sentiment
50/100
Buys (3m)
0
Sells (3m)
0
Net (3m)
$0
Insider trades by month Buys Sells
May
Aug
Nov
Dec
Feb
May
Context3-month price -0.1%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 27, 2026 | Harris Greta Jdirector | Sell | 27 | $1848.83 |
| May 27, 2026 | Harris Greta Jdirector | Sell | 35 | $1846.12 |
| May 27, 2026 | Harris Greta Jdirector | Sell | 14 | $1847.36 |
| May 22, 2026 | Morrison Harold Lawrence Jr.director | Grant | 89 | — |
| May 22, 2026 | Housel Morgan E.director | Grant | 89 | — |
| May 22, 2026 | Besca Markdirector | Grant | 89 | — |
| May 22, 2026 | Cunningham Lawrence Adirector | Grant | 89 | — |
| May 22, 2026 | Leopold Dianedirector | Grant | 89 | — |
| May 22, 2026 | Harris Greta Jdirector | Grant | 89 | — |
| May 22, 2026 | MICHAEL JONATHAN Edirector | Grant | 89 | — |
| May 22, 2026 | OREILLY MICHAELdirector | Grant | 89 | — |
| May 22, 2026 | Puckett A. Lynnedirector | Grant | 89 | — |
| May 19, 2026 | GAYNER THOMAS SINNICKSONdirector, officer: Chief Executive Officer | Tax | 482 | $1844.00 |
| May 19, 2026 | Costanzo Brian J.officer: Chief Financial Officer | Tax | 13 | $1844.00 |
| May 19, 2026 | Grinnan Richard Randolphofficer: SVP, Chief Legal Officer & Sec | Tax | 116 | $1844.00 |
| May 19, 2026 | Crowley Andrew G.officer: EVP & Pres., Markel Ventures | Tax | 75 | $1844.00 |
| May 8, 2026 | Leopold Dianedirector | Buy | 50 | $1789.19 |
| May 8, 2026 | Leopold Dianedirector | Buy | 100 | $1792.61 |
| May 5, 2026 | Puckett A. Lynnedirector | Buy | 57 | $1795.53 |
| Feb 26, 2026 | GAYNER THOMAS SINNICKSONdirector, officer: Chief Executive Officer | Grant | 4,484 | — |
| Feb 26, 2026 | Grinnan Richard Randolphofficer: SVP, Chief Legal Officer & Sec | Grant | 801 | — |
| Feb 26, 2026 | Costanzo Brian J.officer: Chief Financial Officer | Grant | 655 | — |
| Feb 26, 2026 | Grandis Meade P.officer: CAO and Controller | Grant | 70 | — |
| Feb 26, 2026 | Wilson Simonofficer: EVP and CEO, Markel Insurance | Grant | 868 | — |
| Feb 26, 2026 | Crowley Andrew G.officer: EVP & Pres., Markel Ventures | Grant | 830 | — |
| Feb 26, 2026 | Wilson Simonofficer: EVP and CEO, Markel Insurance | Sell | 100 | $2079.48 |
| Feb 19, 2026 | Wilson Simonofficer: CEO, Markel Insurance | Tax | 47 | $2084.46 |
| Dec 15, 2025 | MARKEL STEVEN Adirector | Sell | 70 | $2108.27 |
| Dec 15, 2025 | MARKEL STEVEN Adirector | Sell | 50 | $2103.55 |
| Dec 15, 2025 | MARKEL STEVEN Adirector | Sell | 64 | $2100.00 |
Source: MKL SEC Form 4 filings, latest May 27, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their MKL positions over the last 6 months (SEC Form 13F).
Increased
619
New positions
216
Reduced
631
Sold out
90
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Reduced | 711K | May 13, 2026 |
| BlackRock, Inc. | Reduced | 698K | Aug 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 546K | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 545K | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 524K | May 8, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 522K | Aug 13, 2026 |
| DAVIS SELECTED ADVISERS | Increased | 407K | Aug 11, 2026 |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 402K | May 4, 2026 |
| DAVIS SELECTED ADVISERS | Reduced | 383K | May 7, 2026 |
| SELECT EQUITY GROUP, L.P. | Reduced | 378K | May 15, 2026 |
| MORGAN STANLEY | Reduced | 357K | May 15, 2026 |
| MORGAN STANLEY | Reduced | 351K | Aug 13, 2026 |
| Select Equity Group, L.P. | Reduced | 332K | Aug 14, 2026 |
| STATE STREET CORP | Increased | 312K | Aug 7, 2026 |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 308K | Aug 4, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.