Insider · SEC Form 4 filer
Thomas Gayner
Past buys: 4 of 6 beat
Companies
Where they file as an insider
Markel Group (MKL) CEO, Director Latest filing May 15, 2026
Graham (GHC) Director Latest filing Sep 12, 2024
Track record
Did their buys beat the typical stock?
Open-market buys6
Quarters checked 6 months later6
Beat the typical stock 4 of 6
Quarters too new to check0
4 of 6 checked quarters beat the typical stock. A past record is data, not a forecast.
Markel Group (MKL) Bought Feb 7, 2025 · $201K · 100 shares Behind typical Mar 31, 2025 $1869.61 → Sep 30, 2025 $1911.36 · +2.2% (typical stock +7.3%)
Markel Group (MKL) Bought Nov 1, 2024 · $155K · 100 shares Beat typical Dec 31, 2024 $1726.23 → Jun 30, 2025 $1997.36 · +15.7% (typical stock −3.4%)
Graham (GHC) Bought Sep 12, 2024 · $74.3K · 100 shares Beat typical Sep 30, 2024 $821.72 → Mar 31, 2025 $960.86 · +16.9% (typical stock −7.5%)
Markel Group (MKL) Bought Feb 2, 2024 · $141K · 100 shares Behind typical Mar 31, 2024 $1521.48 → Sep 30, 2024 $1568.58 · +3.1% (typical stock +3.2%)
Graham (GHC) Bought Nov 9, 2023 · $60.7K · 100 shares Beat typical Dec 31, 2023 $696.52 → Jun 30, 2024 $699.55 · +0.4% (typical stock −1.2%)
Markel Group (MKL) Bought Nov 3, 2023 · $131K · 100 shares Beat typical Dec 31, 2023 $1419.90 → Jun 30, 2024 $1575.66 · +11.0% (typical stock −1.2%)
Each row is one stock in one quarter, however many buys it took. We take the stock's price at the end of that quarter and again 6 months later, and compare it with the typical stock over the same dates. Prices are quarter-end values from funds' 13F reports (the middle value across 3 or more funds), through Sep 30, 2026. Moves past 3 times up or down, mostly stock splits, are left out. How we tested this.
Past results. This is data, not advice.
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