EX-24 5 xexhbt24.txt EXHIBIT 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: That we, the undersigned officers and directors of Northern Trust Corporation, hereby severally constitute and appoint William A. Osborn and Kelly R. Welsh, and each of them singly, our true and lawful attorneys and agents with full power to them and each of them singly, to sign for us in our names in the capacities indicated below a Registration Statement on Form S-8 relating to the sale of shares of Common Stock of Northern Trust Corporation (including associated Preferred Stock Purchase Rights) under the Northern Trust Corporation 2002 Stock Plan, and any and all amendments (including post-effective amendments) to the Registration Statement, and to file any of the foregoing with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby granting to such attorneys and agents, and each of them, full power of substitution and revocation in the premises, and generally to do all such things in our name and behalf in our capacities as officers and directors to enable Northern Trust Corporation to comply with the provisions of the Securities Act of 1933, as amended, and all regulations of the Securities and Exchange Commission thereunder, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or each of them, to the Registration Statement, and any and all amendments thereto, and all that said attorneys and agents, or each of them, may do or cause to be done by virtue of these presents. This Power of Attorney may be executed in one or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. IN WITNESS WHEREOF, each of the undersigned has executed this Power of Attorney as of this 16th day of April, 2002. /s/ William A. Osborn ------------------------------ William A. Osborn Chairman of the Board, Chief Executive Officer and Director /s/ Perry R. Pero ------------------------------ Perry R. Pero Vice Chairman and Chief Financial Officer /s/ Harry W. Short ------------------------------ Harry W. Short Executive Vice President and Controller /s/ Duane L. Burnham /s/ Frederick A. Krehbiel ------------------------------ ------------------------------ Duane L. Burnham Frederick A. Krehbiel Director Director /s/ Dolores E. Cross /s/ Robert C. McCormack ------------------------------ ------------------------------ Dolores E. Cross Robert C. McCormack Director Director /s/ Susan Crown /s/ Edward J. Mooney ------------------------------ ------------------------------ Susan Crown Edward J. Mooney Director Director /s/ Robert S. Hamada /s/ John W. Rowe ------------------------------ ------------------------------ Robert S. Hamada John W. Rowe Director Director /s/ Barry G. Hastings /s/ Harold B. Smith ------------------------------ ------------------------------ Barry G. Hastings Harold B. Smith President, Chief Operating Director Officer and Director /s/ Robert A. Helman /s/ William D. Smithburg ------------------------------ ------------------------------ Robert A. Helman William D. Smithburg Director Director /s/ Arthur L. Kelly ------------------------------ Arthur L. Kelly Director