Brian Jeffrey Costanzo
Personal wealth note: Equibles reports source-backed professional activity and disclosed compensation; it does not estimate personal net worth.
About Brian Jeffrey Costanzo
Brian Jeffrey Costanzo is recorded as CFO at Markel Group Inc. (MKL). Brian Jeffrey Costanzo has spoken on 1 earnings call across 1 company, most recently for Markel Group Inc. on February 5, 2026.
Summary generated from SEC filings and earnings-call records held by Equibles.
Affiliation history
Recorded current and former roles; source labels appear when available.
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Current
Company network
Recorded roles and call appearances connecting this person to public companies.
Leadership on record at Markel Group Inc.
Other people whose current roles at this company are on record from its filings.
- Thomas S. Gayner CEO, Chairman, Board Member
- MICHAEL O’REILLY Chairman
- Thomas Gayner Chairman
- Brian J. Costanzo CFO
- Teresa S. Gendron CFO
- Michael R. Heaton COO
- Robert C. Cox COO
- Meade P. Grandis Chief Accounting Officer
- Oscar Guerrero Chief Accounting Officer
- A. LYNNE PUCKETT Board Member
Recent activity
Earnings-call and investor-event appearances, plus filed executive appointments or departures, newest first.