X0202 5 2006-12-31 0 0 0 0000720002 MAINSOURCE FINANCIAL GROUP MSFG 0001256237 BARRON WILLIAM G 726 HARVARD DRIVE OWENSBORO KY 42301 1 0 0 0 Common Stock 2006-12-28 5 G 0 590 D 50631 D Common Stock 33102 I By Spouse Common Stock 45930 I Trust A Common Stock 4918 I Trust B Common Stock 220551 I Barron Family Trust Common Stock 127465 I Barron Family Partnership Common Stock 3693 I FBO Son Common Stock 2006-12-31 5 G 0 11254 D 0 I FBO Son Common Stock 2006-12-31 5 G 0 10306 D 0 I FBO Son Common Shares 2006-12-31 5 G 0 9069 D 0 I FBO Daughter Stock Option (Right to Buy) 14.03 2003-05-19 2013-05-18 Common Stock 1653.75 1653.75 D Stock Option (Right to Buy) 22.26 2004-02-23 2014-02-22 Common Stock 1575 1575 D Stock Option (Right to Buy) 21.60 2005-02-22 2015-02-21 Common Stock 1000 1000 D Stock Option (Right to Buy) 18.94 2006-02-22 2016-02-21 Common Stock 500 500 D 590 shares were gifted from Mr. Barron's direct holdings. 12,548 shares were transferred from Mr. Barron's direct holdings to indirect ownership in the Barron Family Trust on 4/28/06. Includes 193 shares acquired on 3/16/06, 222 shares acquired on 06/12/06, 240 shares acquired on 9/15/06 and 408 shares acquired on 12/15/06 under the Dividend Reinvestment Plan. Includes 218 shares acquired on 3/16/06, 251 shares acquired on 06/12/06, 251 shares acquired on 9/15/06 and 244 shares acquired on 12/15/06 under the Dividend Reinvestment Plan. Includes 313 shares acquired on 3/16/06, 361 shares acquired on 06/12/06, 360 shares acquired on 9/15/06 and 350 shares acquired on 12/15/06 under the Dividend Reinvestment Plan. Includes 451 shares acquired on 3/16/06, and 1801 shares acquired on 06/12/06 under the Dividend Reinvestment Plan. Following the cash dividend paid on 6/12/06, dividends were no longer reinvested for shares held by the Barron Family Trust. Includes 903 shares acquired on 3/16/06, and 1041 shares acquired on 06/12/06 under the Dividend Reinvestment Plan. Following the cash dividend paid on 6/12/06, dividends were no longer reinvested for shares held by the Barron Family Partnership. Includes 22 shares acquired on 3/16/06, 26 shares acquired on 06/12/06, 29 shares acquired on 9/15/06 and 28 shares acquired on 12/15/06 under the Dividend Reinvestment Plan. Shares held as Custodian FBO Son were transferred to adult Son and will be excluded from future filings. Shares held as Custodian FBO Daughter were transferred to adult Daughter and will be excluded from future filings. The original option was for 1000 shares of common stock at an exercise price of $23.20 per share, but was adjusted and restated to reflect the 5% stock dividend paid on 01/09/04; the 3 for 2 stock split paid on 04/16/04; and the 5% stock dividend paid on 01/15/05. The original option was for 1000 shares of common stock at an exercise price of $35.06 per share, but was adjusted and restated to reflect the 3 for 2 stock split paid on 04/16/04; and the 5% stock dividend paid on 01/15/05. William G. Barron 2007-02-15