SEC Form 4
Markel Group Inc. (MKL) insider trading
In the 12 months to Nov 15, 2026, 3 MKL insiders reported open-market sales of $3.7M across 5 filings; 2 insiders bought $371.1K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $3.7M
- 5 filings · 3 insiders
- Open-market purchases
- $371.1K
- 2 filings
- Pre-arranged sales (10b5-1)
- 2 of 5
- $3.2M of $3.7M sold (86%)
Who traded MKL, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
MKL daily close from Nov 17, 2025 to Nov 13, 2026, between $1,712.45 and $2,191.90, last $1,977.29. 5 sale and 2 purchase filings by 5 insiders, marked at their filing dates. Steven A. Markel, Director: sold $3.2M across 2 filings, first filed Dec 1, 2025, last Dec 15, 2025. Simon Wilson, CEO, Markel Insurance → EVP and CEO, Markel Insurance: sold $363.4K across 2 filings, first filed Nov 25, 2025, last Feb 26, 2026. Diane Leopold, Director: bought $268.7K across 1 filing, first filed May 8, 2026, last May 8, 2026. Greta J. Harris, Director: sold $140.4K across 1 filing, first filed May 27, 2026, last May 27, 2026. A. Lynne Puckett, Director: bought $102.3K across 1 filing, first filed May 5, 2026, last May 5, 2026.
Largest mark · tap a row for others
Steven A. Markel · Director
Sale $2,818,430
1,330 shares at $2,119.12 avg
Filed Dec 15, 2025 · traded Dec 11
Pre-arranged (10b5-1) · close on filing date $2,160.22
Steven A. Markel · Director
Director
$3.2M soldSimon Wilson · CEO, Markel Insurance → EVP and CEO, Markel Insurance
CEO, Markel Insurance → EVP and CEO, Markel Insurance
$363.4K soldDiane Leopold · Director
Director
$268.7K boughtGreta J. Harris · Director
Director
$140.4K soldA. Lynne Puckett · Director
Director
$102.3K boughtOpen-market trades
7 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Steven A. Markel | Director | $3.2M | — | 2 | 100% of sales | |
| Simon Wilson | CEO, Markel Insurance → EVP and CEO, Markel Insurance | $363.4K | — | 2 | — | |
| Diane Leopold | Director | — | $268.7K | 1 | — | |
| Greta J. Harris | Director | $140.4K | — | 1 | — | |
| A. Lynne Puckett | Director | — | $102.3K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Greta J. Harris Director | Sale | 76 | $1,847.31 | $140.4K | 672 | |
traded | Diane Leopold Director | Purchase | 150 | $1,791.47 | $268.7K | Multiple accounts | |
traded | A. Lynne Puckett Director | Purchase | 57 | $1,795.53 | $102.3K | 1,463 | |
traded | Simon Wilson EVP and CEO, Markel Insurance | Sale | 100 | $2,079.48 | $207.9K | 2,397 | |
traded | Steven A. Markel Director | SalePre-arranged (10b5-1) | 1,330 | $2,119.12 | $2.8M | 60,488 | |
traded | Steven A. Markel Director | SalePre-arranged (10b5-1) | 170 | $2,100.00 | $357.0K | 61,698 | |
traded | Simon Wilson CEO, Markel Insurance | Sale | 75 | $2,072.94 | $155.5K | 1,770 |
GET /stocks/filings/vX/form-4?tickers=MKL&filing_date.gte=2025-11-15&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"MKL"
],
"issuer_cik": "0001096343",
"owner_cik": "0001857626",
"accession_number": "0001857626-26-000004",
"form_type": "4",
"filing_date": "2026-05-27",
"period_of_report": "2026-05-22",
"issuer_name": "MARKEL GROUP INC.",
"issuer_trading_symbol": "MKL",
"owner_name": "Harris Greta J",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-22",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 27,
"transaction_price_per_share": 1848.83,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 645,
"transaction_value": 49918.409999999996,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F3",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,848.34 to $1,848.87, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
}
]
},
{
"tickers": [
"MKL"
],
"issuer_cik": "0001096343",
"owner_cik": "0001857626",
"accession_number": "0001857626-26-000004",
"form_type": "4",
"filing_date": "2026-05-27",
"period_of_report": "2026-05-22",
"issuer_name": "MARKEL GROUP INC.",
"issuer_trading_symbol": "MKL",
"owner_name": "Harris Greta J",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-22",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 35,
"transaction_price_per_share": 1846.12,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 686,
"transaction_value": 64614.2,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,846.00 to $1,846.31, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 45 records
- Tax withholding11 records
- Grants and awards15 records
- Gifts2 records
- Other17 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Role
- The title on each filing. Someone whose title changed shows more than one.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Markel Group Inc.'s CEO sold stock?
Yes. Simon Wilson (CEO) sold 175 shares ($363.4K) between Nov 2025 and Feb 2026. Thomas Sinnickson Gayner (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is MKL’s insider data?
These are MKL Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track MKL insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for MKL every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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