The document announces the annual meeting of stockholders of Northern Trust Corporation to be held on April 21, 2009 at 10:30 am at their offices in Chicago, Illinois. The purposes of the meeting are to elect 14 directors, ratify the appointment of the independent auditors, consider an advisory vote on executive compensation, and address any other business matters. Stockholders of record as of March 2, 2009 are eligible to vote. Stockholders are urged to vote by proxy card, telephone, internet, or in person at the meeting.