Byline Bancorp, Inc. Provides Additional Information on How to Access the Virtual 2020 Annual Meeting of Stockholders

Byline Bancorp, Inc. BY today provided additional information regarding its 2020 Annual Meeting of Stockholders (the "Annual Meeting"), which will be held virtually at 8:30 a.m. Central Standard Time on June 9, 2020. As instructed by the Company's transfer agent, American Stock Transfer ("AST"), stockholders wishing to attend the Annual Meeting who hold their shares of Byline common stock in street name and received a control number generated by a broker must be admitted to the Annual Meeting as guests by clicking the "I am a guest" button in the https://web.lumiagm.com/216815308 portal where the Annual Meeting will be virtually held. A password will not be required for those stockholders who access the virtual meeting site as a guest.

About Byline Bancorp, Inc.

Headquartered in Chicago, Byline Bancorp, Inc. is the parent company for Byline Bank, a full service commercial bank serving small- and medium-sized businesses, financial sponsors, and consumers. Byline Bank has approximately $5.7 billion in assets and operates more than 50 full service branch locations throughout the Chicago and Milwaukee metropolitan areas. Byline Bank offers a broad range of commercial and retail banking products and services including small ticket equipment leasing solutions and is one of the top five Small Business Administration lenders in the United States.

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