Company:  NORTHERN TRUST CORP (NTRS)
Form Type:  8-K
Filing Date:  4/18/2012 
CIK:  0000073124 
Address:  50 S LASALLE ST 
City, State, Zip:  CHICAGO, Illinois 60603 
Telephone:  (312) 630-6000 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$58.27  
Change: 
1.09 (1.91%)  
Trade Time: 
May 17  
Market Cap: 
$13.94B
Description of Business
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  FORM 8-K
    SECTION 5 CORPORATE GOVERNANCE
      Item 5.03. Amendments to Articles of Incorporation or ...
    SECTION 9 FINANCIAL STATEMENTS AND EXHIBITS
      Item 9.01 Financial Statements and Exhibits.
    SIGNATURES
    EXHIBIT INDEX
  EXHIBIT 3.1
    By-laws