X0206 3 2017-06-29 0 0001702750 BYLINE BANCORP, INC. BY 0001214993 HERENCIA ROBERTO R C/O BYLINE BANCORP, INC. 180 NORTH LASALLE STREET SUITE 300 CHICAGO IL 60601 1 0 0 0 Common Stock 81435 D Common Stock 10147 I By Roberto Herencia Inc. Defined Benefit Plan Stock Option (Right to Buy) 11.18 2025-06-26 Common Stock 214494 D Stock Option (Right to Buy) 11.18 2025-06-26 Common Stock 71494 D Shares of common stock are held through the Roberto Herencia Inc. Defined Benefit Plan. Mr Herencia possesses the voting and investment power with respect to the shares of common stock held by the Roberto Herencia Inc. Defined Benefit Plan. 80% of these options have already vested and the remaining 20% vest on June 28, 2018, subject to continued service with the issuer. Options were all previously earned based on the achievement of performance goals and 80% of the earned options previously vested. The remaining 20% vest on June 28, 2018, subject to continued service with the issuer. Exhibit 24 - Power of Attorney /s/ Lindsay Corby, Attorney-in-Fact for Roberto R. Herencia 2017-06-29