X0306 4 2018-09-24 0 0000715579 ACNB CORP ACNB 0001710866 Rasmussen Tom N 2603 LAUREN HILL COURT FINKSBURG MD 21048 0 0 0 1 ACNB Bank EVP ACNB Corporation Common 2018-09-24 4 P 0 1000 38.2055 A 7510.4706 D ACNB Corporation Common 4048.9887 I Trust The amount of securities beneficially owned includes 99.532 shares of common stock purchased for the Transaction Dates of March 15, June 15 and September 14, 2018, through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934. The amount of securities beneficially owned includes 79.604587 shares of common stock purchased for the Transaction Dates of March 15, June 15 and September 14, 2018, through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934. /s/ Tom N. Rasmussen 2018-09-26