Markel lists 10 executives, led by Thomas Sinnickson Gayner, CEO & Chairman (age 64). Brian Jeffrey Costanzo is the company's CFO & Chief Financial Officer of Markel Insurance Operations (age 47).
In fiscal year 2025 the highest-paid executive was Thomas Sinnickson Gayner, CEO & Chairman, with total pay of $4.90 million. The 4 executives with reported pay received $11.13 million in all.
The average age of the executives with a known age is 54; the youngest is 47 and the oldest 64.
Titles, ages and pay from company filings; pay for fiscal year 2025.

CEO & Chairman
CFO & Chief Financial Officer of Markel Insurance Operations
Senior VP, Chief Legal Officer & Secretary
Executive VP and CEO & Co-President of Markel Insurance
Chief Accounting Officer & Controller
Chief Administrative Officer
Deputy Chief Communications Officer
Vice President of Sales & Business Development
Executive Director of Programs and Alliances - Markel Specialty
Regional President for Northeast region of US Wholesale & Specialty division
| Executive | Title | Age | Total pay |
|---|---|---|---|
| Thomas Sinnickson Gayner | CEO & Chairman | 64 | $4.90 million |
| Simon Wilson | Executive VP and CEO & Co-President of Markel Insurance | 47 | $3.12 million |
| Richard Randolph Grinnan | Senior VP, Chief Legal Officer & Secretary | 56 | $1.73 million |
| Brian Jeffrey Costanzo | CFO & Chief Financial Officer of Markel Insurance Operations | 47 | $1.38 million |
Total pay as reported for the fiscal year; it can include salary, bonus and stock awards.
Thomas Sinnickson Gayner (CEO & Chairman), age 64; total pay in fiscal year 2025 was $4.90 million.
Brian Jeffrey Costanzo (CFO & Chief Financial Officer of Markel Insurance Operations), age 47.
Thomas Sinnickson Gayner, CEO & Chairman, with total pay of $4.90 million in fiscal year 2025.
Thomas Sinnickson Gayner (CEO & Chairman), Brian Jeffrey Costanzo (CFO & Chief Financial Officer of Markel Insurance Operations), Richard Randolph Grinnan (Senior VP, Chief Legal Officer & Secretary), Simon Wilson (Executive VP and CEO & Co-President of Markel Insurance) and Meade P. Grandis (Chief Accounting Officer & Controller), and 5 more.