SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT

                     Pursuant to Section 13 or 15 (d) of the
                         Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)      July 15, 2002
                                                  ----------------------


                           NORTHERN TRUST CORPORATION
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             (Exact name of registrant as specified in its charter)


                                    Delaware
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                 (State or other jurisdiction of incorporation)


            0-5965                                         36-2723087
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   (Commission File Number)                    (IRS Employer Identification No.)


Fifty South LaSalle Street, Chicago, Illinois                  60675
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   (Address of principal executive offices)                 (Zip Code)


Registrant's telephone number, including area code          (312) 630-6000
                                                     ---------------------------



Item 5. Other Events

        The information contained in the registrant's July 15, 2002 press
release, reporting on the registrant's earnings for the second quarter of 2002,
a copy of which is filed as Exhibit 99 hereto, is incorporated herein by
reference.

Item 7. Financial Statements and Exhibits

    (c) Exhibits:

        Exhibit 99     July 15, 2002 Press Release

                                        2



                                    SIGNATURE

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                                      NORTHERN TRUST CORPORATION
                                                      --------------------------
                                                            (Registrant)

Dated: July 15, 2002                    By: /s/ Perry R. Pero
                                            ------------------------
                                                Perry R. Pero
                                                Vice Chairman
                                                and Chief Financial Officer

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                                  EXHIBIT INDEX

Number            Description                                 Page Number

  99              July 15, 2002 Press Release                      5

                                       4