EXHIBIT 22 NORTHERN TRUST CORPORATION SUBSIDIARIES Percent State of Owned Incorporation -------- ------------- The Northern Trust Company 100% Illinois NorLease, Inc. 100% Delaware The Northern Trust Safe Deposit Company 100% Illinois The Northern Trust International Banking Corp. 100% Edge Act MFC, Inc. 100% Delaware Nortrust Nominees, Ltd. 100% United Kingdom Norsub Corporation 100% Delaware Northern Trust Bank/O'Hare N. A. 100% National Bank Northern Trust Bank/DuPage 100% Illinois Northern Trust of Florida Corporation 100% Florida Northern Trust Bank of Florida N. A. 100% National Bank Subs of NTB/Florida Realnor Properties, Inc. 100% Florida Realnor Special Properties, Inc. 100% Florida Realnor 177, Inc. 100% Florida Realnor Hallendale, Inc. 100% Florida Northern Trust Cayman International, Inc. 100% Cayman Islands Nortrust Realty Management, Inc. 100% Illinois Nortrust of Arizona Holding Corporation 100% Arizona Northern Trust Bank of Arizona N. A. 100% National Bank Northern Trust Securities, Inc. 100% Delaware Northern Investment Management Co. 100% Delaware Northern Investment Corporation 100% Delaware Transatlantic Trust Corporation 25% New Brunswick, Canada NORTHERN TRUST CORPORATION SUBSIDIARIES (CONTINUED) Percent State of Owned Incorporation -------- ------------- First Lake Forest Corporation 100% Delaware Northern Trust Bank/Lake Forest N. A. 100% National Bank Northern Trust Services, Inc. 100% Delaware Northern Futures Corporation 100% Delaware The Northern Trust Company of New York 100% New York Northern Securities Services, Canada, Ltd. 100% Ontario, Canada Northern Trust of California Corporation 100% Delaware Northern Trust Bank of California N. A. 100% National Bank Berry, Hartell, Evers & Osborne, Inc. 100% Delaware Northern Trust Bank of Texas N. A. 100% National Bank Fiduciary Services, Inc. 100% Texas