X0206 3 2017-06-29 0 0001702750 BYLINE BANCORP, INC. BY 0001709906 CABRERA PHILLIP R. C/O BYLINE BANCORP, INC. 180 NORTH LASALLE STREET SUITE 300 CHICAGO IL 60601 1 0 0 0 Common Stock 601 D Common Stock 1600 I By Phillip R. Cabrera Revocable Trust Shares of common stock are held through the Phillip R. Cabrera Revocable Trust. Mr. Cabrera possesses the voting and investment power with respect to the shares of common stock held by the Philip R. Cabrera Revocable Trust. Exhibit 24 - Power of Attorney /s/ Lindsay Corby, Attorney-in-Fact for Phillip R. Cabrera 2017-06-29