Company:  BERKLEY W R CORP (WRB)
Form Type:  4
Filing Date:  5/22/2012 
CIK:  0000011544 
Address:  475 STEAMBOAT ROAD
.
 
City, State, Zip:  GREENWICH, Connecticut 06830 
Telephone:  (203) 629-3000 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$41.27  
Change: 
-0.60 (-1.43%)  
Trade Time: 
04:03 PM EST  
Market Cap: 
$5.61B
Description of Business
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  FORM 4
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    EXPLANATIONS AND REMARKS
    REPORTING OWNERS
    SIGNATURES