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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
73124	Northern Trust Corp	NTRS	State Commercial Banks (6022)	362723087

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1188084	L William Morrison	50 South Lasalle Street Chicago IL 60603	President & Coo	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2012-10-19	3,066	$32.62	59,519	No	4	M	Direct
Common Stock	Acquisiton	2012-10-19	12,453	$32.62	71,972	No	4	M	Direct
Common Stock	Disposition	2012-10-19	12,453	$47.86	59,519	No	4	S	Direct
Common Stock	Disposition	2012-10-19	1,678	$47.72	71,994	No	4	F	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct
No	4	F	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	61,761	Direct
Common Stock	203	Indirect	By Son
Common Stock	1,200	Indirect	By Spouse
Common Stock	148	Indirect	By Son
Common Stock	2,552	Indirect	401(k)

Footnotes

The price in Column 4 is the weighted average price. The prices actually received ranged from $47.80 to $47.92. 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.
On October 19, 2012, 7,523 already reported and vested stock units, granted on July 21, 2009, were distributed to the reporting person, 2,242 stock units were distributed to the reporting person as common stock of NTRS; 1,678 stock units were withheld in payment of Federal, State and Medicare taxes and 3,603 were deferred.
As of 9/30/12.