Costanzo Brian J.

CIK 1873434
Transactions on file
10

Tickers traded

Recent activity

FiledTxn dateIssuerRolesCodeSharesValue% since FilingFiling
2026-07-162026-06-30MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.5K+26.1%open →
2026-05-192026-05-15MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other30$50.0K+22.9%open →
2026-05-192026-05-15MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Tax13$24.1K+10.6%open →
2026-04-152026-03-31MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.0K+25.3%open →
2025-01-172024-12-31MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$2.8K+52.6%open →
2025-02-202025-02-18MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Grant379$0.00open →
2025-04-172025-03-31MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.0K+39.7%open →
2025-12-032025-12-02MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Tax22$44.8K-1.0%open →
2025-10-162025-09-30MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.0K+25.5%open →
2025-07-162025-06-30MKL
MARKEL GROUP INC.
Officer
Chief Financial Officer
Other2$3.5K+29.0%open →