X0306 4 2022-03-15 0 0000715579 ACNB CORP ACNB 0001362780 Cathell David W 16 LINCOLN SQUARE GETTYSBURG PA 17325 0 1 0 0 EVP, Treasurer & CFO ACNB Corporation Common 2022-03-15 2022-03-17 4 A 0 1282.8345 32.74 A 19213.656 D The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4). 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 March 15, 2022, with the next one-third (1/3) 100% vested as of January 1, 2023, and the final one-third (1/3) 100% vested as of January 1, 2024. The amount of securities beneficially owned includes 59.165241 shares of common stock purchased for the same Transaction Date of March 15, 2022, 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/ David W. Cathell 2022-03-18