All insiders/SEC Form 4 history

Costanzo Brian J.

Chief Financial OfficerCIK 1873434

1 Form 4 transaction across 1 company, 2026-03-31 → 2026-03-31.

Total disclosed
$3K
Buys
$3K
Sells
$0
Win rate · live
100%

Holdings

Marked using shares-after from the latest filing × live quote
Company
Trades
Holding value
Last trade
Avg buy / sell
% since last
MKL
MARKEL GROUP INC.
Chief Financial Officer
1
$3.17M
1.6K sh
BUY
2026-03-31
$1626.96
+21.0%

Insider trade history

1 disclosed transaction
DateTickerCodeSharesPriceValueNow% since
2026-03-31MKLJ2$1626.96$3K$1968.13+21.0%

Form 4 codes: P open-market buy · S open-market sell · A grant/award · M option exercise · F tax withholding · G gift. % since is the move from the trade-day reported price to the live quote.