Director John M. Polli Receives 243 Shares as Director Compensation

This Form 4 filing reports that John M. Polli, a director of ACNB Corporation, received 243.3198 shares of ACNB common stock as compensation for his service as a director. The transaction occurred on June 15, 2026, with shares priced at $56.51 each, and the shares were acquired through the company's director compensation plan. Following this transaction, Polli now holds 36,123.7134 shares of ACNB common stock. The filing notes that the shares represent compensation for director service and includes shares purchased through the company's Dividend Reinvestment and Stock Purchase Plan. The filing was signed on June 17, 2026, by Kevin J. Hayes under power of attorney for John M. Polli.