X0303 4 2009-02-19 0 0000720002 MAINSOURCE FINANCIAL GROUP MSFG 0001352388 Tressler Daryl R 201 N. BROADWAY GREENSBURG IN 47240 0 1 0 0 Chairman/CEO Lead Subsidiary Common Stock 2009-02-19 4 P 0 500 6.26 A 500 I By Spouse FBO Grandson Common Stock 2009-02-19 4 P 0 500 6.12 A 500 I By Spouse FBO Granddaughter Common Stock 66215 D Common Stock 6037 I By Spouse Common Stock 1498 I Jointly with Spouse Common Stock 856 I By Spouse with Daughter Common Stock 862 I By Spouse with Son Includes 570 shares acquired on 3/17/08 under the MainSource Dividend Reinvestment Plan, 585 shares acquired on 6/16/08 under the DRP, 465 shares acquired on 9/15/08 under the DRP, and 528 shares acquired on 12/15/08 under the DRP. Between 1/01/2008 and 12/31/2008, the reporting person acquired 1,660 shares of MainSource common stock under the MainSource 401-k Plan. The information in this report is based on a Plan statement dated 12/31/2008. Includes 52 shares acquired on 3/17/08 under the MainSource Dividend Reinvestment Plan, 47 shares acquired on 6/16/08 under the DRP, 43 shares acquired on 9/15/08 under the DRP, and 51 shares acquired on 12/15/08 under the DRP. Includes 13 shares acquired on 3/17/08 under the MainSource Dividend Reinvestment Plan, 12 shares acquired on 6/16/08 under the DRP, 11 shares acquired on 9/15/08 under the DRP, and 13 shares acquired on 12/15/08 under the DRP. Includes 7 shares acquired on 3/17/08 under the MainSource Dividend Reinvestment Plan, 7 shares acquired on 6/16/08 under the DRP, 6 shares acquired on 9/15/08 under the DRP, and 7 shares acquired on 12/15/08 under the DRP. Includes 7 shares acquired on 3/17/08 under the MainSource Dividend Reinvestment Plan, 7 shares acquired on 6/16/08 under the DRP, 6 shares acquired on 9/15/08 under the DRP, and 7 shares acquired on 12/15/08 under the DRP. Daryl R. Tressler 2009-02-19