X0303 4 2009-02-02 0 0000720002 MAINSOURCE FINANCIAL GROUP MSFG 0001250579 ANDERSON JAMES M 88 DOGWOOD TRAIL BATESVILLE IN 47006 0 1 0 0 Sr. VP and CFO Common Stock 2009-02-02 4 P 0 500 9.43 A 1535 D Common Stock 251 I FBO Daughter Common Stock 367 I FBO Son Common Stock 4532 I By 401-k Plan Includes 9 shares acquired on 3/17/08 under the Mainsource Dividend Reinvestment Plan, 8 shares acquired on 6/16/08 under the DRP, 7 shares acquired on 9/15/08 under the DRP, and 9 shares acquired on 12/15/08 under the DRP. Includes 2 shares acquired on 3/17/08 under the Mainsource Dividend Reinvestment Plan, 2 shares acquired on 6/16/08 under the DRP, 1 shares acquired on 9/15/08 under the DRP, and 2 shares acquired on 12/15/08 under the DRP. Includes 3 shares acquired on 3/17/08 under the Mainsource Dividend Reinvestment Plan, 3 shares acquired on 6/16/08 under the DRP, 2 shares acquired on 9/15/08 under the DRP, and 3 shares acquired on 12/15/08 under the DRP. Between 1/01/08 and 12/31/08 the reporting person acquired 1,994 shares under the Mainsource 401-k Plan, based on a plan statement dated 12/31/08. James M. Anderson 2009-02-03