X0306 4 2017-12-15 0 0000715579 ACNB CORP ACNB 0001491265 Sites David L 220 DOUBLEDAY AVENUE GETTYSBURG PA 17325 1 0 0 0 ACNB Corporation Common 2017-12-15 2017-12-19 4 P 0 155.8442 28.875 A 29492.3716 D ACNB Corporation Common 1500 I Investment Partnership ACNB Corporation Common 26 I Family Trust ACNB Corporation Common 1656.558 I Spouse 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. /s/ Lynda L. Glass as POA for David L. Sites 2017-12-20