X0306 4 2017-12-15 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 2017-12-15 2017-12-19 4 P 0 155.8442 28.875 A 26988.3886 D ACNB Corporation Common 7601 I Spouse ACNB Corporation Common 2017-12-07 4 W 0 12933 D 39566 I Power of Attorney The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4). The amount of securities beneficially owned includes 13.149091 shares of common stock purchased for the same Transaction Date of December 15, 2017, 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 shares were disposed of by the laws of descent and distribution due to the passing of the reporting person's father for which he served as power of attorney. /s/ Lynda L. Glass as POA for Alan J. Stock 2017-12-21