Costanzo Brian J.

Companies where Costanzo Brian J. has traded

• MARKEL GROUP INC.26 tx · $214.7K · Jul 16, 2026

Track record of Costanzo Brian J.

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Costanzo Brian J.

Co-insiders of Costanzo Brian J.

• Albanese Gerard JRMARKEL GROUP INC.
• Besca MarkMARKEL GROUP INC.
• Broaddus J Alfred JrMARKEL GROUP INC.
• Connell K BruceMARKEL GROUP INC.
• COX ROBERT CMARKEL GROUP INC.
• Crouch Nora NMARKEL GROUP INC.
• Crowley Andrew G.MARKEL GROUP INC.
• Crowley Michael FMARKEL GROUP INC.
• Cunningham Lawrence AMARKEL GROUP INC.
• Davies Susan L.MARKEL GROUP INC.
• EBY DOUGLAS CMARKEL GROUP INC.
• GAYNER THOMAS SINNICKSONMARKEL GROUP INC.
• Gendron Teresa SMARKEL GROUP INC.
• Glisson Britton L.MARKEL GROUP INC.
• GRANDIS LESLIE AMARKEL GROUP INC.
• Grandis Meade P.MARKEL GROUP INC.
• Grinnan Richard RandolphMARKEL GROUP INC.
• Guerrero OscarMARKEL GROUP INC.
• Harris Greta JMARKEL GROUP INC.
• Heaton Michael RMARKEL GROUP INC.
• Housel Morgan E.MARKEL GROUP INC.
• KASEN STEWART MMARKEL GROUP INC.
• KIRSHNER ALAN IMARKEL GROUP INC.
• Kiscaden Bradley JamesMARKEL GROUP INC.
• Latham John KMARKEL GROUP INC.
• Leopold DianeMARKEL GROUP INC.
• Lewis Lemuel EMARKEL GROUP INC.
• MARKEL ANTHONY FMARKEL GROUP INC.
• MARKEL GARY LMARKEL GROUP INC.
• MARKEL STEVEN AMARKEL GROUP INC.
• MARTIN DARRELL DMARKEL GROUP INC.
• MICHAEL JONATHAN EMARKEL GROUP INC.