Form 4 Filing for Frank Elsner III

Frank Elsner III, a director at ACNB Corp, reported a transaction on September 15, 2026. The filing details the acquisition of 157.7577 shares of ACNB Corporation Common stock, valued at $65.29 per share. These shares were received as compensation for his service as a director. Additionally, 3.8291 shares were acquired through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan. Following these transactions, Mr. Elsner holds 29,071.0964 shares of ACNB Corporation Common stock. The transactions were executed under SEC Rule 16a-3(g)(2) and (g)(4).