X0306 4 2018-12-14 0 0000715579 ACNB CORP ACNB 0001491265 Sites David L 220 DOUBLEDAY AVENUE GETTYSBURG PA 17325 1 0 0 0 ACNB Corporation Common 2018-12-14 2018-12-18 4 A 0 123.9499 36.305 A 31132.3727 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 shares represent stock received in lieu of director fees pursuant to a plan. The amount of securities beneficially owned includes 15.974108 shares of common stock purchased for the same Transaction Date of December 14, 2018, 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 2018-12-20