NYSE:MKL

Markel Stock Insider Trading

Financial Services > Insurance - Property & Casualty

Buy MKL

*Your capital is at risk

$1,777.63

-9.85 (-0.551%)

At Close: Jun 03, 2026

Markel Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -16.46. In total, the insiders bought 110.56M and sold 3.89M MKL shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-16.46
● Buy	110.56M shares
● Sell	3.89M shares
61% Buy Activity Strong Negative Correlation
Buy Signal Low Confidence Feb 24, 2026 Analysis Breakdown: Weakened by a contradictory negative Insider Power Score. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 22, 2026 Sell	Common Stock S-Sale	Harris Greta J Director	Director	27 Value: $49.9K
May 22, 2026 Sell	Common Stock S-Sale	Harris Greta J Director	Director	14 Value: $25.9K
May 22, 2026 Sell	Common Stock S-Sale	Harris Greta J Director	Director	35 Value: $64.6K
May 20, 2026 Buy	Common Stock A-Award	Leopold Diane Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Oreilly Michael Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Cunningham Lawrence A Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Michael Jonathan E Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Morrison Harold Lawrence Jr. Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Besca Mark Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Harris Greta J Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Housel Morgan E. Director	Director	89 Value: $165.4K
May 20, 2026 Buy	Common Stock A-Award	Puckett A. Lynne Director	Director	89 Value: $165.4K
May 15, 2026 Sell	Common Stock F-InKind	Costanzo Brian J. Chief Financial Officer	C-Suite Officer	13 Value: $24.1K
May 15, 2026 Buy	Common Stock J-Other	Costanzo Brian J. Chief Financial Officer	C-Suite Officer	30 Value: $50.0K
May 15, 2026 Buy	Common Stock J-Other	Crowley Andrew G. EVP & Pres., Markel Ventures	Officer	60 Value: $100.0K
May 15, 2026 Sell	Common Stock F-InKind	Gayner Thomas Sinnickson Chief Executive Officer	CEO / President	482 Value: $888.2K
May 15, 2026 Sell	Common Stock F-InKind	Grinnan Richard Randolph SVP, Chief Legal Officer & Sec	Officer	116 Value: $214.6K
May 15, 2026 Sell	Common Stock F-InKind	Crowley Andrew G. EVP & Pres., Markel Ventures	Officer	75 Value: $138.1K
May 07, 2026 Buy	Common Stock P-Purchase	Leopold Diane Director	Director	50 Value: $89.5K
May 06, 2026 Buy	Common Stock P-Purchase	Leopold Diane Director	Director	100 Value: $179.3K
May 01, 2026 Buy	Common Stock P-Purchase	Puckett A. Lynne Director	Director	57 Value: $102.3K
Mar 31, 2026 Buy	Common Stock J-Other	Costanzo Brian J. Chief Financial Officer	C-Suite Officer	2 Value: $3K
Mar 31, 2026 Buy	Common Stock J-Other	Crowley Andrew G. EVP & Pres., Markel Ventures	Officer	9 Value: $15.0K
Feb 26, 2026 Sell	Common Stock S-Sale	Wilson Simon EVP And CEO, Markel Insurance	CEO / President	100 Value: $207.9K
Feb 24, 2026 Buy	Common Stock A-Award	Wilson Simon EVP And CEO, Markel Insurance	CEO / President	868 Value: $1.79M

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT MARKEL CORPORATION

Markel Corporation, a diverse financial holding company, markets and underwrites specialty insurance products in the United States, Bermuda, the United Kingdom, rest of Europe, Canada, the Asia Pacific, and the Middle East. Its Insurance segment offers general and professional liability, personal lines, marine and energy, specialty programs, and workers' compensation insurance products; and property coverages that include fire, allied lines, and ...

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