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$1,875.05 +3.72 (+0.20%) At close · Aug 7
Market Cap
$23.23B
Shares
12.39M

Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.

Filed Seller Shares
2026-05-22 Harris Greta J 76
2025-12-11 MARKEL STEVEN A 1,330
2025-11-28 MARKEL STEVEN A 100
2025-11-26 MARKEL STEVEN A 70
2025-05-23 Harris Greta J 90
2025-02-25 MARKEL STEVEN A 1,054
2025-02-24 MARKEL STEVEN A 1,146
2025-02-21 MARKEL STEVEN A 800
2024-05-24 Harris Greta J 122
2024-05-21 MARKEL STEVEN A 3,000
2023-11-17 MARKEL STEVEN A 63
2023-08-29 Steven A. Markel 1,398
2023-08-18 Harris Greta J 103
Showing 1–13 of 13 filings
Key facts CIK 1096343 CUSIP 570535104 13F (30d) 477 filings 450 filers Visit website Investor relations