0001702750 2026-06-03 2026-06-03 0001702750 1 2026-06-03 2026-06-03 0001702750 2 2026-06-03 2026-06-03 iso4217:USD pure shares S-8 S-8 EX-FILING FEES 0001702750 BYLINE BANCORP, INC. N/A false false S-8 BYLINE BANCORP, INC. Equity Common Stock true 1697594 33.015 56046065.91 0.0001381 7739.96 Equity Common Stock true 200000 33.015 6603000.00 0.0001381 911.87 62649065.91 8651.83 0.00 8651.83 (1) Represents shares of Common Stock reserved for issuance and issuable under the Byline Bancorp, Inc. 2026 Omnibus Incentive Compensation Plan. (2) Estimated solely for the purposes of calculating the registration fee pursuant to Rule 457(c) and (h) under the Securities Act, on the basis of the average of the high and low trading prices ($33.28 and $32.75, respectively) of the Common Stock on May 28, 2026, as reported on the New York Stock Exchange. (1) Represents shares of Common Stock reserved for issuance and issuable under the Byline Bancorp, Inc. Employee Stock Purchase Plan. (2) Estimated solely for the purposes of calculating the registration fee pursuant to Rule 457(c) and (h) under the Securities Act, on the basis of the average of the high and low trading prices ($33.28 and $32.75, respectively) of the Common Stock on May 28, 2026, as reported on the New York Stock Exchange.