X0306 4 2019-12-13 0 0000715579 ACNB CORP ACNB 0001710848 Herring Todd L 4259 HARNEY ROAD TANEYTOWN MD 21787 1 0 0 0 ACNB Corporation Common 2019-12-13 2019-12-18 4 A 0 159.9889 35.94 A 3257.5615 D ACNB Corporation Common 947.3165 I Trust ACNB Corporation Common 880 I Minor Trust ACNB Corporation Common 1052 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 12.535058 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. The amount of securities beneficially owned includes 6.544240 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 Todd L. Herring 2019-12-20