UNITED STATES
                       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): February 27, 2006

                        MainSource Financial Group, Inc.
             (Exact name of registrant as specified in its charter)

     Indiana                          0-12422                 35-1562245
State or Other Jurisdiction of    Commission File No.       I.R.S. Employer
Incorporation or Organization                             Identification Number



                               201 North Broadway
                            Greensburg, Indiana 47240
                    (Address of principal executive offices)

                                 (812) 663-0157
                         (Registrant's Telephone Number,
                              Including Area Code)

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

     Check the  appropriate  box below if the Form 8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

     |_| Written communications pursuant to Rule 425 under the Securities Act
         (17 CFR 230.425)
     |_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act
         (17 CFR 240.14a-12)
     |_| Pre-commencement communications pursuant to Rule 14d-2(b) under the
         Exchange Act (17 CFR 240.14d-2(b))
     |_| Pre-commencement communications pursuant to Rule 13e-4(c) under the
         Exchange Act (17 CFR 240.13e-4(c))





Item 7.01.             Regulation FD Disclosure

On February 27, 2006,  MainSource  Financial Group,  Inc. issued a press release
announcing  that its Board of Directors had declared a quarterly  dividend.  The
press  release is attached  as an exhibit to this Report and is being  furnished
pursuant to this Item 7.01 as Exhibit 99.1 to this Report.

Item 9.01.    Financial Statements and Exhibits

(c)   Exhibits


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

   99.1                MainSource Financial Group, Inc.'s press release
                       dated February 27, 2006.


                                    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.

                                          MAINSOURCE FINANCIAL GROUP, INC.

Date:    February 27, 2006                By:  /s/ James M. Anderson
                                               ---------------------
                                               James M. Anderson
                                               Chief Financial Officer