Brian Costanzo

Brian Costanzo currently serves as the Chief Financial Officer at Markel Group since January 2024, following an extensive tenure at Markel where roles included Chief Accounting Officer and Financial Controller. With foundational experience as Assistant Segment Controller at Markel International and earlier positions such as Tax Manager at FirstComp Insurance and Deloitte Tax LLP, Brian possesses a robust background in insurance accounting and corporate tax compliance. An academic foundation from the University of Nebraska-Lincoln includes a Master's in Professional Accountancy and an MPA in Accounting, complemented by a Bachelor's in Business Administration with a focus on Accounting.