SEC ownership of MARKEL GROUP INC.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001096343.

Comparable stake leader

VANGUARD CAPITAL MANAGEMENT LLC

Disclosed value leader

BlackRock, Inc.

Comparable rows

50/50

Latest evidence

15 Jul 2026

Top shareholders Insider holders Latest transactions
Public ticker
MKL on NYSE
Parsed ownership sources
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
VANGUARD CAPITAL MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
VANGUARD CAPITAL MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
15 Jul 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001096343
Issuer location
Glen Allen, VA

Ownership snapshot

Top shareholders of MARKEL GROUP INC. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
15 Jul 2026
13D/G 13F 3/4/5 Lead comparable stake: 5.2% 13D/G row: VANGUARD CAPITAL MANAGEMENT LLC Showing 1-8 of 50 holder rows.

Quick read

VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 5.2%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership Top 5
VANGUARD CAPITAL MANAGEMENT LLC 5.2%
Steven A. Markel 0.62%
Thomas Sinnickson Gayner 0.49%
Meade P. Grandis 0.06%
Michael R. Heaton 0.04%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
VANGUARD CAPITAL MANAGEMENT LLC
13D/G 13F
Vanguard Capital Management · Company
13D/G 13F
5.2%
$1,239,959,932
654,077 shares
 $0 31 Mar 2026
Steven A. Markel
3/4/5
Director
3/4/5
0.62%
$164,272,078
77,429 shares
 -$3,175,430 11 Dec 2025
Thomas Sinnickson Gayner
3/4/5
Chief Executive Officer, Director
3/4/5
0.49%
$117,770,070
61,529 shares
 — 15 May 2026
Meade P. Grandis
3/4/5
CAO and Controller
3/4/5
0.06%
$14,794,823
6,945 shares
 -$148,784 24 Feb 2026
Michael R. Heaton
3/4/5
EVP & Chief Operating Officer
3/4/5
0.04%
$10,041,251
4,870 shares
 — 02 Dec 2025
Richard Randolph Grinnan
3/4/5
SVP, Chief Legal Officer & Sec
3/4/5
0.03%
$8,168,090
4,267 shares
 — 15 May 2026
Michael Oreilly
3/4/5
Director
3/4/5
0.03%
$7,531,209
3,935 shares
 — 15 Jun 2026
Andrew G. Crowley
3/4/5
EVP & Pres., Markel Ventures
3/4/5
0.02%
$5,786,910
2,963 shares
 — 15 Jul 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$3,456,962.

Buys
$371,066
Insiders: 2
Sells
$3,828,028
Insiders: 4
Net
-$3,456,962
Shares: -1,619
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 207 Shares: 1,826
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 150 76 $268,720 $140,396 +$128,325
3-6 57 100 $102,345 $207,948 -$105,603
6-9 0 1,575 $0 $3,330,900 -$3,330,900
9-12 0 75 $0 $148,784 -$148,784

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 27 reporting-owner rows connected to MARKEL GROUP INC.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
27
Largest Forms 3/4/5 holder
Steven A. Markel
Net 12M change
-$3,456,963
Latest report
15 Jul 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Steven A. Markel Director $164,272,078 -$3,175,430 -1.9% Mixed 11 Dec 2025
Thomas Sinnickson Gayner Chief Executive Officer, Director $117,770,070 Mixed 15 May 2026
Anthony F. Markel Director $44,005,147 Mixed 24 Feb 2025
Richard R. Whitt III Co-Chief Executive Officer, Director $17,977,624 Mixed 06 Dec 2022
Meade P. Grandis CAO and Controller $14,794,823 -$148,784 -1% Mixed 24 Feb 2026
Bradley James Kiscaden Pres/Chief Admin Off-Ins Ops $11,163,923 Mixed 15 Feb 2022
Jeremy Andrew Noble President, Insurance $10,300,000 Mixed 18 Feb 2025
Michael R. Heaton EVP & Chief Operating Officer $10,041,251 Mixed 02 Dec 2025
Richard Randolph Grinnan SVP, Chief Legal Officer & Sec $8,168,090 Mixed 15 May 2026
Michael Oreilly Director $7,531,209 Mixed 15 Jun 2026
Lemuel E. Lewis Director $7,387,287 Mixed 14 May 2021
Andrew G. Crowley EVP & Pres., Markel Ventures $5,786,910 Median 15 Jul 2026
Diane Leopold Director $5,541,272 +$268,721 +5.1% Mixed 15 Jun 2026
Simon Wilson EVP and CEO, Markel Insurance $4,983,996 -$363,419 -6.8% Filing P/S 24 Feb 2026
A. Lynne Puckett Director $3,771,486 +$102,345 +2.8% Mixed 15 Jun 2026
Brian J. Costanzo Chief Financial Officer $3,636,174 Median 30 Jun 2026
K. Bruce Connell Director $3,103,023 Mixed 17 May 2023
Robert C. Cox Pres. & COO, Insur. Operations $3,055,596 Mixed 06 Dec 2022
Mark Besca Director $2,339,293 Mixed 15 Jun 2026
Linda Schreiner V SVP, Strategic Management $2,198,644 Mixed 07 Dec 2021

Recent insider transactions for MARKEL GROUP INC.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Andrew G. Crowley MKL Common Stock Other 0.27% 7.48 2,749 15 Jul 2026 Direct
Brian J. Costanzo MKL Common Stock Other 0.13% 2.16 1,632 30 Jun 2026 Direct
Andrew G. Crowley MKL Common Stock Other 0.1% 2.82 2,741 30 Jun 2026 Direct
Mark Besca MKL Common Stock Other 7.09% 80.9 1,222 15 Jun 2026 Direct
Morgan E. Housel MKL Common Stock Other 6.84% 65.92 1,029 15 Jun 2026 Direct
Diane Leopold MKL Common Stock Other 2.89% 65.92 2,345 15 Jun 2026 Direct
Michael Jonathan E MKL Common Stock Other 24.7% 65.92 333 15 Jun 2026 Direct
Harold Lawrence Morrison Jr. MKL Common Stock Other 3.01% 32.96 1,127 15 Jun 2026 Direct
Lawrence A. Cunningham MKL Common Stock Other 3.27% 32.96 1,042 15 Jun 2026 Direct
A. Lynne Puckett MKL Common Stock Other 14.9% 65.92 507 15 Jun 2026 Direct
Michael Oreilly MKL Common Stock Other 2.34% 89.89 3,935 15 Jun 2026 Direct
Greta J. Harris MKL Common Stock Sale -10.5% $140,396 $1847.31 -76 645 22 May 2026 Direct
Michael Jonathan E MKL Common Stock Award 50% 89 267 20 May 2026 Direct
Harold Lawrence Morrison Jr. MKL Common Stock Award 8.86% 89 1,094 20 May 2026 Direct
Mark Besca MKL Common Stock Award 8.46% 89 1,141 20 May 2026 Direct
Greta J. Harris MKL Common Stock Award 14.1% 89 721 20 May 2026 Direct
Lawrence A. Cunningham MKL Common Stock Award 9.68% 89 1,009 20 May 2026 Direct
Michael Oreilly MKL Common Stock Award 2.37% 89 3,845 20 May 2026 Direct
Morgan E. Housel MKL Common Stock Award 10.2% 89 963 20 May 2026 Direct
A. Lynne Puckett MKL Common Stock Award 25.2% 89 441 20 May 2026 Direct
Diane Leopold MKL Common Stock Award 4.06% 89 2,279 20 May 2026 Direct
Thomas Sinnickson Gayner MKL Common Stock Tax liability -0.85% -482 56,260 15 May 2026 Direct
Richard Randolph Grinnan MKL Common Stock Tax liability -2.73% -116 4,147 15 May 2026 Direct
Andrew G. Crowley MKL Common Stock Other 2.25% 60.26 2,738 15 May 2026 Direct
Andrew G. Crowley MKL Common Stock Tax liability -2.72% -74.87 2,678 15 May 2026 Direct
Brian J. Costanzo MKL Common Stock Other 1.88% 30.13 1,630 15 May 2026 Direct
Brian J. Costanzo MKL Common Stock Tax liability -0.81% -13.08 1,600 15 May 2026 Direct
Diane Leopold MKL Common Stock Purchase 10% $89,460 $1789.19 50 550 07 May 2026 By Spouse
Diane Leopold MKL Common Stock Purchase 4.78% $179,261 $1792.61 100 2,190 06 May 2026 Direct
A. Lynne Puckett MKL Common Stock Purchase 4.05% $102,345 $1795.53 57 1,463 01 May 2026 By Trust
Andrew G. Crowley MKL Common Stock Other 0.34% 9.22 2,753 31 Mar 2026 Direct
Brian J. Costanzo MKL Common Stock Other 0.11% 1.84 1,613 31 Mar 2026 Direct
Simon Wilson MKL Common Stock Sale -4.01% $207,948 $2079.48 -100 2,397 26 Feb 2026 Direct
Brian J. Costanzo MKL Common Stock Award 68.4% 655 1,611 24 Feb 2026 Direct
Andrew G. Crowley MKL Common Stock Award 43.4% 830 2,744 24 Feb 2026 Direct
Richard Randolph Grinnan MKL Common Stock Award 23.1% 801 4,263 24 Feb 2026 Direct
Meade P. Grandis MKL Common Stock Award 31.1% 69.72 294 24 Feb 2026 Direct
Thomas Sinnickson Gayner MKL Common Stock Award 8.58% 4,484 56,741 24 Feb 2026 Direct
Simon Wilson MKL Common Stock Award 53.3% 868 2,497 24 Feb 2026 Direct
Simon Wilson MKL Common Stock Tax liability -2.8% -47 1,629 17 Feb 2026 Direct
Brian J. Costanzo MKL Common Stock Other 0.23% 2.18 957 31 Dec 2025 Direct
Steven A. Markel MKL Common Stock Sale -2.16% $2,818,430 $2119.12 -1,330 60,368 11 Dec 2025 Direct
Thomas Sinnickson Gayner MKL Common Stock Tax liability -0.07% -36.61 52,258 02 Dec 2025 Direct
Simon Wilson MKL Common Stock Tax liability -5.31% -94 1,676 02 Dec 2025 Direct
Michael R. Heaton MKL Common Stock Tax liability -4.41% -217 4,709 02 Dec 2025 Direct
Richard Randolph Grinnan MKL Common Stock Tax liability -3.83% -138 3,463 02 Dec 2025 Direct
Andrew G. Crowley MKL Common Stock Tax liability -3.27% -64.77 1,914 02 Dec 2025 Direct
Brian J. Costanzo MKL Common Stock Tax liability -2.23% -21.72 954 02 Dec 2025 Direct
Steven A. Markel MKL Common Stock Sale -0.16% $210,000 $2100.00 -100 61,698 28 Nov 2025 Direct
Steven A. Markel MKL Common Stock Sale -0.11% $147,000 $2100.00 -70 61,798 26 Nov 2025 Direct
* marks a reported price that did not pass the local price check.
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