EXHIBIT 99.1

                                  News Release

BW Account Number: 1079001

Date:                    March 16, 2004 1:00 P.M., EST
Contact:                 JAMES L. SANER, SR., PRESIDENT & CEO
                         MAINSOURCE FINANCIAL GROUP (812) 663-0157


                    MAINSOURCE FINANCIAL GROUP-NASDAQ, MSFG -
                       Declares Three-for-Two Stock Split

James L. Saner, Sr., President & Chief Executive Officer, announced today that
MainSource Financial Group's board of directors has approved a three-for-two
stock split of the company's common stock. The stock split will be distributed
on April 16, 2004 to shareholders of record as of March 31, 2004. This split is
in addition to the five percent stock dividend our shareholders received on
January 9, 2004 which represented the fourth consecutive year that the Company
issued a five percent stock dividend.

Mr. Saner stated, "MainSource Financial Group's ongoing business strategy has
been extremely successful and the Company has realized significant appreciation
in its stock price." Mr. Saner added, "This stock split reflects the confidence
of our board of directors and positions us to continue our strategic plan of
rewarding our shareholders while providing quality customer service through
ongoing development of customer relationships."

Following the stock split, MainSource Financial Group will have approximately
10.6 million shares outstanding. Fractional shares resulting from the stock
split will be paid in cash.

MainSource Financial Group, Inc., headquartered in Greensburg, Indiana, is
listed on the Nasdaq Stock Market (trading symbol: MSFG). MainSource Financial
Group is a community-focused, multi-bank, financial services oriented holding
company with assets of approximately $1.4 billion. Through its four banking
subsidiaries, First Community Bank and Trust, Bargersville, Indiana; MainSource
Bank, Greensburg, Indiana; Regional Bank, New Albany, Indiana; and Capstone
Bank, Watseka, Illinois, it operates 51 offices in 21 Indiana counties and seven
offices in three Illinois counties. Through its insurance subsidiary, MainSource
Insurance, it operates five offices in Indiana as well as one in Owensboro,
Kentucky.


Forward-Looking Statements


Except for historical information contained herein, the discussion in this press
release may include certain forward-looking statements based upon management
expectations. Factors which could cause future results to differ from these
expectations include the following: general economic conditions; legislative and
regulatory initiatives; monetary and fiscal policies of the federal government;
deposit flows; the costs of funds; general market rates of interest; interest
rates on competing investments; demand for loan products; demand for financial
services; changes in accounting policies or guidelines; and changes in the
quality or composition of the Company's loan and investment portfolios.


The forward-looking statements included in the press release relating to certain
matters involve risks and uncertainties, including anticipated financial
performance, business prospects, and other similar matters, which reflect
management's best judgment based on factors currently known. Actual results and
experience could differ materially from the anticipated results or other
expectations expressed in the Company's forward-looking statements as a result
of a number of factors, including but not limited to, those discussed in the
press release.

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  MainSource Financial Group, Inc., 201 N. Broadway, Greensburg, Indiana 47240