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Costanzo Brian J.

Chief Financial OfficerCIK: 0001873434

Costanzo Brian J., Chief Financial Officer, has filed 6 insider trading reports covering 1 company. Total disclosed trading volume is $57.8K. Purchases and sales are approximately balanced over this period. The largest single filing involves MARKEL GROUP INC. (MKL). All transactions sourced from SEC Form 4 filings.

Total Volume
$57.8K
Purchases
$0
Sales
$0
Companies
1

Trading History (6 filings)

Costanzo Brian J.Chief Financial Officer
Filed Apr 15, 2026
Other
$0
Costanzo Brian J.Chief Financial Officer
Filed Feb 26, 2026
Grant
$0
1 grant
Costanzo Brian J.Chief Financial Officer
Filed Jan 20, 2026
Other
$0
Costanzo Brian J.Chief Financial Officer
Filed Dec 3, 2025
Other
$0
Costanzo Brian J.Chief Financial Officer
Filed Oct 16, 2025
Other
$0
Costanzo Brian J.Chief Financial Officer
Filed Jul 16, 2025
Other
$0