X0306 4 2013-01-29 0000073124 NORTHERN TRUST CORP NTRS 0001514798 Cohodes Jeffrey D. 50 SOUTH LASALLE STREET CHICAGO IL 60603 0 1 0 0 ExecutiveVP/Chief Risk Officer Common Stock 2013-01-29 4 M 0 12208 32.615 A 22401 D Common Stock 2013-01-29 4 S 0 12208 51.4189 D 10193 D Common Stock 22990 D Common Stock 3819.68 I 401(k) Employee Stock Option (right to buy) 32.615 2013-01-29 4 M 0 10000 0 D 2013-02-18 Common Stock 10000 0 D Employee Stock Option (right to buy) 32.615 2013-01-29 4 M 0 2208 0 D 2003-08-18 2013-02-18 Common Stock 2208 0 D This sale was made pursuant to a written plan adopted in accordance with SEC Rule 10b5-1. The price in Column 4 is the weighted average price. The prices actually received ranged from $51.22 to $51.58. Upon request, the reporting person will provide to the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares sold at each separate price within this range. Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock. as of 12/31/12 This option became exercisable in three annual installments beginning on February 18, 2004. Paul A. Bernacki, Attorney-In-Fact for Jeffrey D. Cohodes 2013-01-30