MARKEL CORP

Ticker: MKL CUSIP: 570535104 Class: COMMON STOCK

United American Securities Inc. (d/b/a UAS Asset Management)'s Holding History (CIK: 0001349353)

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

Q2 2013

Shares 490 Value ($000) $258 Avg Close $523.59 Range $501.76 - $546.94

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2013	490	$258	$523.59	$501.76 - $546.94