Supplemental Reinsurance Information

12 Months Ended

Dec. 31, 2011

Schedule IV – Reinsurance

ALLEGHANY CORPORATION AND SUBSIDIARIES

Three years ended December 31, 2011


Year	Line of Business	Gross Amount		Ceded to Other Companies		Assumed From Other Companies		Net Amount		Percentage of Amount Assumed to Net
	(in thousands)
2011	Property and casualty	$	1,069,188	$	367,441	$	45,892	$	747,639		6.1	%


2010	Property and casualty	$	1,131,680	$	384,538	$	20,992	$	768,134		2.7	%


2009	Property and casualty	$	1,278,910	$	452,999	$	19,104	$	845,015		2.3	%

- Definition

The entire disclosure for the supplemental schedule of reinsurance information required to be filed for each period for which an audited income statement is presented. Reinsurance schedule includes the type of insurance, gross amount of premiums, premiums ceded to other companies, premiums assumed from other companies, net amount of premium revenue, and the percentage of the premiums assumed to net premium revenue.

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