X0306 5 2019-12-31 0 0 0 0000715579 ACNB CORP ACNB 0001362780 Cathell David W 465 IDAVILLE YORK SPRINGS ROAD GARDNERS PA 17324 0 1 0 0 EVP, Treasurer & CFO ACNB Corporation Common 16010.5358 D The amount of securities beneficially owned includes 80.64812 aggregate shares of common stock acquired in 2019 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/ David W. Cathell 2020-02-05