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Filing Details

Accession Number:: 0000895813-10-000032
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-02-03 12:00:00
Reporting Period:: 2010-02-02

Filing Date:: 2010-02-03
Accepted Time:: 2010-02-03 17:00:47
SEC Url:: Form 4 Filing

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
1143959	C Robert Mccormack	50 South Lasalle Street Chicago IL 60603		Yes	No	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2010-02-02	20,000	$52.07	956,400	No	4	S	Indirect	By Trust
Common Stock	Disposition	2010-02-03	20,000	$51.89	936,400	No	4	S	Indirect	By Trust

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	By Trust
No	4	S	Indirect	By Trust

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	7,827	Direct
Common Stock	1,234,552	Indirect	By Trust
Common Stock	100,535	Indirect	By Trust
Common Stock	316,693	Indirect	By Trust
Common Stock	1,303,159	Indirect	By Trust
Common Stock	20,851	Indirect	By Spouse

Footnotes

The price in Column 4 is a weighted average price. The prices actually received ranged from $52.03 to $52.105. 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.
These shares are held in a trust for the benefit of Mr. McCormack's sister-in-law. Mr. McCormack is a co-trustee of the trust. Reporting person disclaims beneficial ownership.
The price in Column 4 is a weighted average price. The prices actually received ranged from $51.80 to $51.99. 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.
These shares are held in a trust for the benefit of Mr. McCormack's brother. Mr. McCormack is a co-trustee of the trust. Reporting person disclaims beneficial ownership.
These shares are held in a trust for the benefit of Mr. McCormack's sister-in-law. Mr. McCormack is a co-trustee of the trust. Reporting person disclaims beneficial ownership.
These shares are held in a revocable trust of which Mr. McCormack is a co-trustee and beneficiary.
These shares are held in a trust of which Mr. McCormack is a co-trustee and beneficiary. Mr. McCormack's sons have the remainder interest in the trust.