ACNB Director Donna M. Newell Receives 243 Shares as Director Compensation

This Form 4 filing reports that Donna M. Newell, a director of ACNB Corporation, received 243.3198 shares of ACNB common stock as compensation for her board service on June 15, 2026. The shares were acquired at a price of $56.51 per share, bringing her total holdings to 12,641.6094 shares. The transaction represents director compensation under ACNB's director compensation plan, with the shares received automatically through the company's Dividend Reinvestment and Stock Purchase Plan. The filing includes footnotes clarifying that the execution date was determined according to SEC Rule 16a-3(g)(2) and (g)(4), that the shares represent compensation for director service, and that the amount includes shares purchased through automatic dividend reinvestment. The filing was signed on June 17, 2026, by Kevin J. Hayes under power of attorney for Donna M. Newell.