MARKEL CORP

Ticker: MKL CUSIP: 570535104 Class: COMMON STOCK

Investment Management Corp of Ontario's Holding History (CIK: 0001811568)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 1,670 Value ($000) $3,590 Avg Close $2025.92 Range $1812.24 - $2207.59

Q3 2025

Shares 1,399 Value ($000) $2,674 Avg Close $1960.42 Range $1889.91 - $2075.92

Q2 2025

Shares 1,119 Value ($000) $2,235 Avg Close $1875.20 Range $1621.89 - $2004.24

Q1 2025

Shares 1,169 Value ($000) $2,186 Avg Close $1839.75 Range $1641.51 - $2063.68

Q3 2024

Shares 721 Value ($000) $1,131 Avg Close $1565.15 Range $1491.03 - $1660.74

Q2 2024

Shares 601 Value ($000) $947 Avg Close $1552.86 Range $1417.65 - $1670.24

Q1 2024

Shares 2,278 Value ($000) $3,466 Avg Close $1466.28 Range $1342.66 - $1534.62

Q4 2023

Shares 293 Value ($000) $416 Avg Close $1418.73 Range $1295.65 - $1528.08

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,670	$3,590	$2025.92	$1812.24 - $2207.59
Q3 2025	1,399	$2,674	$1960.42	$1889.91 - $2075.92
Q2 2025	1,119	$2,235	$1875.20	$1621.89 - $2004.24
Q1 2025	1,169	$2,186	$1839.75	$1641.51 - $2063.68
Q3 2024	721	$1,131	$1565.15	$1491.03 - $1660.74
Q2 2024	601	$947	$1552.86	$1417.65 - $1670.24
Q1 2024	2,278	$3,466	$1466.28	$1342.66 - $1534.62
Q4 2023	293	$416	$1418.73	$1295.65 - $1528.08