Markel Corporation
Markel Corporation (MKL) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · MKL · as of Jun 8, 2026
Activity summary
Buy transactions
3
P-Purchase only
Sell transactions
21
12 Months
Buy/Sell ratio
0.14
Buy/Sell (by trades)
Overall sentiment
Markel Corporation insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
MKL insider buying and selling by quarter
MKL insider selling · MKL insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · MKL ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
MKL executive sell shares · MKL board member insider trading · MKL insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 22, 2026 | Harris Greta J Director | Sale | 35 | $65K | Form 4 |
| May 22, 2026 | Harris Greta J Director | Sale | 14 | $26K | Form 4 |
| May 22, 2026 | Harris Greta J Director | Sale | 27 | $50K | Form 4 |
| May 20, 2026 | MICHAEL JONATHAN E Director | Award | 89 | — | Form 4 |
| May 20, 2026 | Morrison Harold Lawrence Jr. Director | Award | 89 | — | Form 4 |
| May 20, 2026 | Besca Mark Director | Award | 89 | — | Form 4 |
| May 20, 2026 | Harris Greta J Director | Award | 89 | — | Form 4 |
| May 20, 2026 | Cunningham Lawrence A Director | Award | 89 | — | Form 4 |
| May 20, 2026 | OREILLY MICHAEL Director | Award | 89 | — | Form 4 |
| May 20, 2026 | Housel Morgan E. Director | Award | 89 | — | Form 4 |
| May 20, 2026 | Puckett A. Lynne Director | Award | 89 | — | Form 4 |
| May 20, 2026 | Leopold Diane Director | Award | 89 | — | Form 4 |
| May 15, 2026 | GAYNER THOMAS SINNICKSON CEO · Director | Other | 481.668 | $888K | Form 4 |
| May 15, 2026 | Grinnan Richard Randolph SVP, Chief Legal Officer & Sec | Other | 116.358 | $215K | Form 4 |
| May 15, 2026 | Crowley Andrew G. EVP & Pres., Markel Ventures | Other | 60.256 | $100K | Form 4 |
| May 15, 2026 | Crowley Andrew G. EVP & Pres., Markel Ventures | Other | 74.866 | $138K | Form 4 |
| May 15, 2026 | Costanzo Brian J. CFO | Other | 30.128 | $50K | Form 4 |
| May 15, 2026 | Costanzo Brian J. CFO | Other | 13.08 | $24K | Form 4 |
| May 6, 2026 | Leopold Diane Director | Purchase | 100 | $179K | Form 4 |
| May 7, 2026 | Leopold Diane Director | Purchase | 50 | $89K | Form 4 |
| May 1, 2026 | Puckett A. Lynne Director | Purchase | 57 | $102K | Form 4 |
| Mar 31, 2026 | Crowley Andrew G. EVP & Pres., Markel Ventures | Other | 9.22 | $15K | Form 4 |
| Mar 31, 2026 | Costanzo Brian J. CFO | Other | 1.844 | $3K | Form 4 |
| Feb 24, 2026 | Costanzo Brian J. CFO | Award | 654.641 | — | Form 4 |
| Feb 24, 2026 | Crowley Andrew G. EVP & Pres., Markel Ventures | Award | 830.02 | — | Form 4 |
GAYNER THOMAS SINNICKSON
CEO · Director
Date
May 15
Shares
481.668
Price
$1844.00
Value
$888K
Grinnan Richard Randolph
SVP, Chief Legal Officer & Sec
Date
May 15
Shares
116.358
Price
$1844.00
Value
$215K
Crowley Andrew G.
EVP & Pres., Markel Ventures
Date
May 15
Shares
60.256
Price
$1659.60
Value
$100K
Crowley Andrew G.
EVP & Pres., Markel Ventures
Date
May 15
Shares
74.866
Price
$1844.00
Value
$138K
Crowley Andrew G.
EVP & Pres., Markel Ventures
Date
Mar 31
Shares
9.22
Price
$1626.96
Value
$15K
Crowley Andrew G.
EVP & Pres., Markel Ventures
Date
Feb 24
Shares
830.02
Price
—
Value
—
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About MKL insider trading
MKL insider trades
Markel Corporation (MKL) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including MARKEL STEVEN A (Director), Costanzo Brian J. (CFO), Crowley Andrew G. (EVP & Pres., Markel Ventures). Over the past 12 months, 5 insiders have filed transactions with the SEC. MKL insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Markel Corporation's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
MKL insider trading · 5 questionsThe insiders of Markel Corporation (MKL) include executives and directors such as MARKEL STEVEN A (Director), Costanzo Brian J. (CFO), Crowley Andrew G. (EVP & Pres., Markel Ventures), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026