X0306 4 2019-12-13 0 0000715579 ACNB CORP ACNB 0001343134 Stock Alan J 245 ORCHARD DRIVE HANOVER PA 17331 1 0 0 1 Vice Chairman of the Board ACNB Corporation Common 2019-12-13 2019-12-18 4 A 0 159.9889 35.94 A 36084.2812 D ACNB Corporation Common 37799 I Power of Attorney ACNB Corporation Common 7601 I Spouse The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4). The shares represent stock received in lieu of director fees pursuant to a plan. The amount of securities beneficially owned includes 25.236784 shares of common stock purchased for the same Transaction Date of December 13, 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/ Lynda L. Glass as POA for Alan J. Stock 2019-12-20