X0306 4 2019-06-14 0 0000715579 ACNB CORP ACNB 0001271301 RITTER THOMAS A P.O. BOX 248 ARENDTSVILLE PA 17303 1 0 0 0 ACNB Corporation Common 2019-06-14 2019-06-18 4 A 0 123.3891 36.47 A 10344.5002 D ACNB Corporation Common 2019-06-14 2019-06-18 4 A 0 500 36.47 A 10844.5002 D ACNB Corporation Common 3322.881 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 38.866740 shares of common stock purchased for the same Transaction Date of June 14, 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. One-third (1/3) of this Variable Equity Award, granted in the form of restricted stock under the ACNB Bank Variable Compensation Plan and pursuant to the ACNB Corporation 2018 Omnibus Stock Incentive Plan, is 100% vested as of the Grant Date of June 14, 2019, with the next one-third (1/3) 100% vested as of January 1, 2020, and the final one-third (1/3) 100% vested as of January 1, 2021. /s/ Lynda L. Glass as POA for Thomas A. Ritter 2019-06-20