MKL

insider transactions

MARKEL GROUP INC. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Cluster buy signal: 2 different insiders made open-market purchases in the last 90 days, totalling $371.1K.

Net shares · 90d

+131

207 buy · 76 sell

Net value · 90d

$230.7K

$371.1K in · $140.4K out

Sentiment · 90d

Net buying

73% buying · 27% selling

Open-market trades · 90d

207 buy · 76 sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Other·J
Jun 15, 26

Lynne A. Puckett

Director

$110.0K

66 sh · $1,668.65
Other·J
Jun 15, 26

Harold Lawrence Morrison Jr.

Director

$55.0K

33 sh · $1,668.65
Other·J
Jun 15, 26

Michael Oreilly

Director

$150.0K

90 sh · $1,668.65
Other·J
Jun 15, 26

MICHAEL JONATHAN E

Director

$110.0K

66 sh · $1,668.65
Other·J
Jun 15, 26

Diane Leopold

Director

$110.0K

66 sh · $1,668.65
Other·J
Jun 15, 26

Morgan E. Housel

Director

$110.0K

66 sh · $1,668.65
Other·J
Jun 15, 26

Lawrence A Cunningham

Director

$55.0K

33 sh · $1,668.65
Sell·S
May 22, 26

Greta J Harris

Director

$49.9K

27 sh · $1,848.83

Own -4%
Sell·S
May 22, 26

Greta J Harris

Director

$25.9K

14 sh · $1,847.36

Own -2%
Sell·S
May 22, 26

Greta J Harris

Director

$64.6K

35 sh · $1,846.12

Own -5%
Grant·A
May 20, 26

Lynne A. Puckett

Director

$0

89 sh

Own +25%
Grant·A
May 20, 26

Harold Lawrence Morrison Jr.

Director

$0

89 sh

Own +9%
Grant·A
May 20, 26

Michael Oreilly

Director

$0

89 sh

Own +2%
Grant·A
May 20, 26

MICHAEL JONATHAN E

Director

$0

89 sh

Own +50%
Grant·A
May 20, 26

Diane Leopold

Director

$0

89 sh

Own +4%
Grant·A
May 20, 26

Morgan E. Housel

Director

$0

89 sh

Own +10%
Grant·A
May 20, 26

Greta J Harris

Director

$0

89 sh

Own +14%
Grant·A
May 20, 26

Lawrence A Cunningham

Director

$0

89 sh

Own +10%
Grant·A
May 15, 26

Diane Leopold

Director

$0

976 sh

Own +55%
Other·F
May 15, 26

Richard Randolph Grinnan

SVP, Chief Legal Officer & Sec

$214.6K

116 sh · $1,844.00

Own -3%
Other·F
May 15, 26

Thomas Sinnickson Gayner KEY

Chief Executive Officer

$888.2K

482 sh · $1,844.00

Own -1%
Other·J
May 15, 26

Andrew G. Crowley

EVP & Pres., Markel Ventures

$100.0K

60 sh · $1,659.60
Other·F
May 15, 26

Andrew G. Crowley

EVP & Pres., Markel Ventures

$138.1K

75 sh · $1,844.00

Own -3%
Other·J
May 15, 26

Brian J. Costanzo KEY

Chief Financial Officer

$50.0K

30 sh · $1,659.60
Other·F
May 15, 26

Brian J. Costanzo KEY

Chief Financial Officer

$24.1K

13 sh · $1,844.00

Own -1%
Buy·P
May 7, 26

Diane Leopold

Director

$89.5K

50 sh · $1,789.19

Own +10%
Buy·P
May 6, 26

Diane Leopold

Director

$179.3K

100 sh · $1,792.61

Own +5%
Buy·P
May 1, 26

Lynne A. Puckett

Director

$102.3K

57 sh · $1,795.53

Own +4%
Other·J
Mar 31, 26

Andrew G. Crowley

EVP & Pres., Markel Ventures

$15.0K

9 sh · $1,626.96
Other·J
Mar 31, 26

Brian J. Costanzo KEY

Chief Financial Officer

$3.0K

2 sh · $1,626.96

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 15, 2026	Lynne A. Puckett	Director	Other J	66	—	$1,668.65	$110.0K
Jun 15, 2026	Harold Lawrence Morrison Jr.	Director	Other J	33	—	$1,668.65	$55.0K
Jun 15, 2026	Michael Oreilly	Director	Other J	90	—	$1,668.65	$150.0K
Jun 15, 2026	MICHAEL JONATHAN E	Director	Other J	66	—	$1,668.65	$110.0K
Jun 15, 2026	Diane Leopold	Director	Other J	66	—	$1,668.65	$110.0K
Jun 15, 2026	Morgan E. Housel	Director	Other J	66	—	$1,668.65	$110.0K
Jun 15, 2026	Lawrence A Cunningham	Director	Other J	33	—	$1,668.65	$55.0K
May 22, 2026	Greta J Harris	Director	Sell S	27	-4%	$1,848.83	$49.9K
May 22, 2026	Greta J Harris	Director	Sell S	14	-2%	$1,847.36	$25.9K
May 22, 2026	Greta J Harris	Director	Sell S	35	-5%	$1,846.12	$64.6K
May 20, 2026	Lynne A. Puckett	Director	Grant A	89	+25%	—	$0
May 20, 2026	Harold Lawrence Morrison Jr.	Director	Grant A	89	+9%	—	$0
May 20, 2026	Michael Oreilly	Director	Grant A	89	+2%	—	$0
May 20, 2026	MICHAEL JONATHAN E	Director	Grant A	89	+50%	—	$0
May 20, 2026	Diane Leopold	Director	Grant A	89	+4%	—	$0
May 20, 2026	Morgan E. Housel	Director	Grant A	89	+10%	—	$0
May 20, 2026	Greta J Harris	Director	Grant A	89	+14%	—	$0
May 20, 2026	Lawrence A Cunningham	Director	Grant A	89	+10%	—	$0
May 15, 2026	Diane Leopold	Director	Grant A	976	+55%	—	$0
May 15, 2026	Richard Randolph Grinnan	SVP, Chief Legal Officer & Sec	Other F	116	-3%	$1,844.00	$214.6K
May 15, 2026	Thomas Sinnickson Gayner KEY	Chief Executive Officer	Other F	482	-1%	$1,844.00	$888.2K
May 15, 2026	Andrew G. Crowley	EVP & Pres., Markel Ventures	Other J	60	—	$1,659.60	$100.0K
May 15, 2026	Andrew G. Crowley	EVP & Pres., Markel Ventures	Other F	75	-3%	$1,844.00	$138.1K
May 15, 2026	Brian J. Costanzo KEY	Chief Financial Officer	Other J	30	—	$1,659.60	$50.0K
May 15, 2026	Brian J. Costanzo KEY	Chief Financial Officer	Other F	13	-1%	$1,844.00	$24.1K
May 7, 2026	Diane Leopold	Director	Buy P	50	+10%	$1,789.19	$89.5K
May 6, 2026	Diane Leopold	Director	Buy P	100	+5%	$1,792.61	$179.3K
May 1, 2026	Lynne A. Puckett	Director	Buy P	57	+4%	$1,795.53	$102.3K
Mar 31, 2026	Andrew G. Crowley	EVP & Pres., Markel Ventures	Other J	9	—	$1,626.96	$15.0K
Mar 31, 2026	Brian J. Costanzo KEY	Chief Financial Officer	Other J	2	—	$1,626.96	$3.0K

About MKL insider trading

This page tracks insider transactions for MARKEL GROUP INC. (MKL) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.