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In the past six months, Byline Bancorp's stock experienced a 1-month decrease of 3.89%, a 3-month increase of 0.27%, a year-to-date increase of 26.82%, and a 1-year increase of 33.76% as of early October 2026. Key events include a merger announcement with Illinois State Bancorp on October 6, 2026, executive leadership changes on October 8, 2026, and strong second-quarter 2026 earnings reported on July 23, 2026, which led to a dividend increase. Insider activity over the past three and twelve months shows net selling, with approximately 622,171 shares worth $24.3 million sold by insiders in the last three months.