X0306 5 2017-12-31 0 1 0 0000720002 MAINSOURCE FINANCIAL GROUP MSFG 0001256237 BARRON WILLIAM G 2105 N. STATE RD 3-BYPASS GREENSBURG IN 47240 1 0 0 0 Common Stock 2017-10-17 5 G 0 18342 0 D 48520 D Common Stock 3 52017 I By Spouse Common Stock 3 403341 I By Family Trust Common Stock 3 80791 I By Generation Skipping Trust Total reported includes 257 shares acquired through the reinvestment of cash dividends between 05/08/2017 and 12/31/2017. Total reported includes 262 shares acquired through the reinvestment of cash dividends between 05/08/2017 and 12/31/2017. Total reported includes 2,029 shares acquired through the reinvestment of cash dividends between 05/08/2017 and 12/31/2017. Total reported has been adjusted to reflect a transfer of 14,700 shares to Mr. Barron's individual account on 10/11/2017. Total reported also includes 480 shares acquired through the reinvestment of cash dividends between 05/08/2017 and 12/31/2017. As authorized by power of attorney. /s/ Denise Manus, attorney-in-fact 2018-02-08