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Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Latest filing published 16 Oct 2026 for MARKEL GROUP INC., €2,644.
Insider track record
Disclosed buys
0
Disclosed sells
0
Signal history
Brian J. Costanzo: trading record in brief
All filings by Brian J. Costanzo on record concern Markel Group Inc. We count 25 filings; the first trade dates from 15 February 2022 and the latest from 30 September 2026.
None of the filings is a plain purchase or sale on the open market; they cover grants, option exercises and other movements. Such operations are usually part of compensation schedules, which makes them a weaker signal than an open-market trade.
The latest filing, published on 16 October 2026, reports a transaction of €2,644 in Markel Group Inc. Typically, a trade is published a median of 16 days after it takes place. US insiders must file a Form 4 within two business days of a trade. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Companies and markets linked to Brian J. Costanzo
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations25 total
2.061 shares@ US$1,455.58Common StockSEC:0001873434-26-000010:0
2.164 shares@ US$1,617.190.0000% mcap2.4% of flowCommon StockSEC:0001873434-26-000008:0
1.844 shares@ US$1,626.962.1% of flowCommon StockSEC:0001873434-26-000004:0
654.641 shares0Common StockSEC:0001873434-26-000003:0
2.184 shares@ US$1,602.622.4% of flowCommon StockSEC:0001096343-26-000001:0
21.723 shares@ US$2,060.8330.6% of flowCommon StockSEC:0001873434-25-000005:0
1.846 shares@ US$1,624.662.0% of flowCommon StockSEC:0001096343-25-000145:0
2.214 shares@ US$1,580.872.4% of flowCommon StockSEC:0001873434-25-000003:0
2.055 shares@ US$1,459.762.2% of flowCommon StockSEC:0001096343-25-000054:0
379.412 shares0Common StockSEC:0001096343-25-000014:0
2.095 shares@ US$1,336.812.1% of flowCommon StockSEC:0001096343-25-000001:0
21 shares@ US$1,759.0427.9% of flowCommon StockSEC:0001096343-24-000138:0
1.8 shares@ US$1,333.291.7% of flowCommon StockSEC:0001096343-24-000117:0
2.183 shares@ US$1,282.462.1% of flowCommon StockSEC:0001096343-24-000095:0
1.966 shares@ US$1,220.991.8% of flowCommon StockSEC:0001096343-24-000052:0
108 shares0Common StockSEC:0001096343-24-000035:0
94 shares0Common StockSEC:0001096343-24-000018:0
2.32 shares@ US$1,206.922.0% of flowCommon StockSEC:0001096343-24-000003:0
15 shares@ US$1,401.2915.4% of flowCommon StockSEC:0001096343-23-000219:0
2.061 shares@ US$1,164.511.8% of flowCommon StockSEC:0001096343-23-000196:0
1.366 shares@ US$1,101.991.1% of flowCommon StockSEC:0001096343-23-000165:0
29 shares0Common StockSEC:0001096343-23-000099:0
1.188 shares@ US$1,085.80100.0% of flowCommon StockSEC:0001096343-23-000072:0
54 shares0Common StockSEC:0001096343-23-000028:0
69 shares0Common StockSEC:0001096343-22-000019:0
25 of 25 declarations
