X0306 5 2015-12-31 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 12008.7051 D The amount of securities beneficially owned was increased to include 42.363280 aggregate shares of common stock acquired in 2015 through the automatic reinvestment of dividends, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934. /s/ David W. Cathell 2016-02-11