X0202 5 2007-12-31 0 0 0 0000720002 MAINSOURCE FINANCIAL GROUP MSFG 0001250696 PARKER JOHN C 2317 N. BROADWAY ST., APT 5 GREENSBURG IN 47240 0 1 0 0 Sr. V.P., Operations Director Common Stock 2007-12-03 5 G 0 902 D 22514 D Stock Option (Right to Buy) 13.36 2003-05-19 2013-05-18 Common Stock 3473 3473 D Stock Option (Right to Buy) 21.20 2004-02-23 2014-02-22 Common Stock 3308 3308 D Stock Option (Right to Buy) 20.57 2005-02-22 2015-02-21 Common Stock 3675 3675 D Stock Option (Right to Buy) 18.04 2006-12-31 2016-02-21 Common Stock 2625 2625 D Stock Option (Right to Buy) 17.01 2007-12-31 2017-02-19 Common Stock 5000 5000 D Gift of 902 shares to Theresa Parker pursuant to a domestic relations court order. Includes 465 shares received on 1/16/2007 pursuant to a 5% stock dividend declared by MainSource on 12/18/2006 payable to all holders of record of common stock of MainSource on 12/31/06. Includes 23 shares acquired on 3/15/07 under the MainSource Dividend Reinvestment Plan, 23 shares acquired on 6/15/07 under the MainSource Dividend Reinvestment Plan, and 22 shares acquired on 9/15/07 under the MainSource Dividend Reinvestment Plan.. Between 01/01/07 and 12/31/07 the reporting person acquired 2,919 shares of MainSource common stock under the MainSource 401(k) Plan. The information in this report is based on a plan statement dated as of 12/31/07. As adjusted for the 5% stock dividend paid on 1/16/2007. Option is exercisable in four annual installments and was 10% vested on 12/31/2006; 30% vested on 12/31/2007; will be 60% vested on 12/31/2008; and 100% vested on 12/31/2009. Option is exercisable in four annual installments and was 10% vested on 12/31/2007; will be 30% vested on 12/31/2008; 60% vested on 12/31/2009; and 100% vested on 12/31/2010. John C. Parker 2008-02-13