    <SEC-DOCUMENT>0001564590-19-026206-index.html : 20190726
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    <ACCEPTANCE-DATETIME>20190725194948
    ACCESSION NUMBER:		0001564590-19-026206
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		18
    CONFORMED PERIOD OF REPORT:	20190726
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20190726
    DATE AS OF CHANGE:		20190725

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BYLINE BANCORP, INC.
    		CENTRAL INDEX KEY:			0001702750
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				363012593

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38139
    		FILM NUMBER:		19975700

    	BUSINESS ADDRESS:
    		BUSINESS PHONE:		773-244-7000

    	MAIL ADDRESS:
    		STREET 1:		180 NORTH LASALLE STREET, SUITE 300
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60601
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