Company:  NATIONAL INTERSTATE CORP (NATL)
Form Type:  4
Filing Date:  12/6/2010 
CIK:  0001301106 
Address:  3250 INTERSTATE DRIVE 
City, State, Zip:  RICHFIELD, Ohio 44286 
Telephone:  (330) 659-8900 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$29.60   		Change: 
0.61 (2.10%)  
Trade Time: 
May 23   		Market Cap: 
$583.62M
Description of Business
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  FORM 4
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    EXPLANATIONS AND REMARKS
    REPORTING OWNERS
    SIGNATURES
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