Item 8.01 Other Events.

On August 26, 2009, Northern Trust Corporation (the "Company") issued a press release announcing that it had repurchased in full from the United States Department of the Treasury (the "Treasury") the ten-year warrant to purchase up to 3,824,624 shares of the Company's common stock, par value $1.66 2/3 per share, at an exercise price of $61.81 per share (the "Warrant"), previously issued and sold by the Company to the Treasury in connection with the Company's issuance and sale to the Treasury of 1,576,000 shares of its Fixed Rate Cumulative Perpetual Preferred Stock, Series B, without par value and a liquidation preference of $1,000 per share (the "Preferred Shares"), as part of the Company's participation in the Treasury's Troubled Asset Relief Program Capital Purchase Program. The repurchase price paid by the Company to the Treasury for the Warrant was $87 million. As disclosed previously, the Company repurchased the Preferred Shares from the Treasury on June 17, 2009 for an aggregate repurchase price of $1.576 billion plus a final accrued dividend.

A copy of the press release announcing the Company's repurchase of the Warrant is filed as an exhibit to this Current Report on Form 8-K and is incorporated by reference into this Item 8.01.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

99.1 Press Release of Northern Trust Corporation, dated August 26, 2009

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