MARKEL CORP

Ticker: MKL CUSIP: 570535104 Class: COMMON STOCK

NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC's Holding History (CIK: 0001629649)

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

Q4 2015

Shares 170 Value ($000) $150 Avg Close $870.15 Range $791.97 - $937.91

Q3 2015

Shares 170 Value ($000) $136 Avg Close $846.01 Range $775.00 - $898.08

Q2 2015

Shares 170 Value ($000) $136 Avg Close $777.66 Range $736.96 - $821.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	170	$150	$870.15	$791.97 - $937.91
Q3 2015	170	$136	$846.01	$775.00 - $898.08
Q2 2015	170	$136	$777.66	$736.96 - $821.00