Costanzo Brian J.

CIK 1873434
Transactions on file
11

Tickers traded

Recent activity

FiledTxn dateIssuerRolesCodeSharesValue% since FilingFiling
2026-10-162026-09-30MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.0K+28.5%open →
2026-07-162026-06-30MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.5K+15.6%open →
2026-05-192026-05-15MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other30$50.0K+12.7%open →
2026-05-192026-05-15MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Tax13$24.1K+1.4%open →
2026-04-152026-03-31MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.0K+14.9%open →
2025-01-172024-12-31MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$2.8K+39.9%open →
2025-02-202025-02-18MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Grant379$0.00—open →
2025-04-172025-03-31MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.0K+28.1%open →
2025-12-032025-12-02MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Tax22$44.8K-9.3%open →
2025-10-162025-09-30MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.0K+15.1%open →
2025-07-162025-06-30MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.5K+18.3%open →