BYLINE BANCORP Director Hugues Velez Margarita Sells 530 Shares at $33.41

This Form 4 filing reports that Hugues Velez Margarita, a director of BYLINE BANCORP, INC. (ticker: BY), sold 530 shares of common stock on June 2, 2026, at a price of $33.41 per share. The transaction was executed under transaction code "F" and resulted in a disposition of shares. Following this sale, the director now holds 7,189 shares of BYLINE BANCORP common stock. The filing indicates the ownership nature is direct (D), meaning the shares were held directly by the director rather than through indirect means. The transaction was reported on June 3, 2026, and signed by Thomas J. Bell III as Attorney-in-Fact for the director. This represents routine insider trading activity by a corporate director.