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): September 2, 2004


                        MAINSOURCE FINANCIAL GROUP, INC.
                   ------------------------------------------
               (Exact Name of Registrant as Specified in Charter)

   INDIANA                        0-12422                     35-1562245
- ---------------            ---------------------        ---------------------
(State or other            (Commission File No.)           (I.R.S. Employer
Jurisdiction of                                         Identification Number)
Incorporation)

         201 NORTH BROADWAY              GREENSBURG, INDIANA    47240
         ---------------------------------------------------------------
         (Address of principal executive offices)             (Zip Code)

                                 (812) 663-0157
              ----------------------------------------------------
              (Registrant's telephone number, including area code)

                                       N/A
             -------------------------------------------------------
          (Former Name or Former Address, if Changed Since Last Report)



Item 7. Regulation FD Disclosure

        On September 2, 2004, the Company announced the details of a
restructuring plan that will result in the consolidation of its Indiana bank
charters. Attached as Exhibit 99.1 is the news release.











                                   SIGNATURES

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

                           MAINSOURCE FINANCIAL GROUP, INC.


                           September 2, 2004

                           /s/ James L. Saner, Sr.
                           -------------------------------------------------
                           James L. Saner, Sr.
                           President and Chief Executive Officer

                           September 2, 2004

                           /s/ Donald A. Benziger
                           -------------------------------------------------
                           Donald A. Benziger
                           Senior Vice President & Chief Financial Officer

                           September 2, 2004

                           /s/ James M. Anderson
                           -------------------------------------------------
                           James M. Anderson
                           Controller & Principal Accounting Officer




                                INDEX TO EXHIBITS

 Exhibit No.   Description
 -----------   -----------

    99.1       MainSource Financial Group News Release