Insider trading

Period: 120 months Stock: MKL Role: CEO × + Add filter Clear all
Views & alerts

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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

31 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

31 decisions over 120 months Remove this filter
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

31 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

31 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
31 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
31 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

31 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
26 Feb 2026
Wilson Simon EVP and CEO, Markel Insurance
Sold at will
$207.95K 100 at 2,079.48
4.0%
Not planned
25 Nov 2025
Wilson Simon CEO, Markel Insurance
Sold at will
$155.47K 75 at 2,072.94
4.1%
Not planned
7 Feb 2025
GAYNER THOMAS SINNICKSON Chief Executive Officer
Bought
$200.80K 100 at 2,008.01
0.2%
Largest buy in 3 yrs
1 Nov 2024
GAYNER THOMAS SINNICKSON Chief Executive Officer
Bought
$154.97K 100 at 1,549.72
0.2%
Largest buy in 3 yrs
2 Feb 2024
GAYNER THOMAS SINNICKSON Chief Executive Officer
Bought
$141.47K 100 at 1,414.74
0.2%
3 Nov 2023
GAYNER THOMAS SINNICKSON Chief Executive Officer
Bought
$131.19K 100 at 1,311.92
0.2%
4 Aug 2023
GAYNER THOMAS SINNICKSON Chief Executive Officer
Bought
$147.95K 100 at 1,479.47
0.2%
Largest buy in 3 yrs
2 May 2023
GAYNER THOMAS SINNICKSON Chief Executive Officer
Bought
$68.00K 50 at 1,359.93
0.1%
Largest buy in 3 yrs
3 Feb 2023
GAYNER THOMAS SINNICKSON Chief Executive Officer
Bought
$32.93K 25 at 1,317.18
0.1%
8 Nov 2022
GAYNER THOMAS SINNICKSON Co-Chief Executive Officer
Bought
$61.53K 50 at 1,230.60
0.1%
4 Aug 2022
GAYNER THOMAS SINNICKSON Co-Chief Executive Officer
Bought
$60.12K 50 at 1,202.46
0.1%
9 May 2022
GAYNER THOMAS SINNICKSON Co-Chief Executive Officer
Bought
$65.30K 50 at 1,306.00
0.1%
Largest buy in 3 yrs
22 Nov 2021
GAYNER THOMAS SINNICKSON Co-Chief Executive Officer
Bought
$31.28K 25 at 1,251.30
0.1%
First buy on file
15 Oct 2021
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$976.99K 750 at 1,302.65
7.0%
11 Aug 2020
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$452.04K 406 at 1,113.39
4.4%
10 Aug 2020
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$103.40K 94 at 1,100.00
1.0%
6 Aug 2020
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$537.50K 500 at 1,075.00
5.0%
23 Dec 2019
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$284.25K 250 at 1,137.01
2.9%
16 Dec 2019
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$283.40K 250 at 1,133.59
2.9%
9 Dec 2019
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$284.02K 250 at 1,136.09
2.8%
2 Dec 2019
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$283.07K 250 at 1,132.29
2.6%
1 Nov 2019
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$586.97K 500 at 1,173.93
5.0%
5 Sep 2018
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated 2×
$601.40K 500 at 1,202.80
4.8%
13 Feb 2018
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$219.77K 200 at 1,098.84
2.1%
9 Feb 2018
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated 2×
$318.01K 300 at 1,060.02
3.0%
28 Aug 2017
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$105.02K 100 at 1,050.20
0.9%
23 Aug 2017
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$627.56K 600 at 1,045.93
5.0%
21 Aug 2017
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$105.00K 100 at 1,050.00
0.8%
14 Aug 2017
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$104.51K 100 at 1,045.10
0.8%
7 Aug 2017
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$106.11K 100 at 1,061.10
0.8%
2 Aug 2017
Whitt Richard R III Co-Chief Executive Officer
Sold, plan not stated
$108.53K 100 at 1,085.31
0.8%
Showing 1–31 of 31.