Conference call and webcast to be held on Friday, October 24

Byline Bancorp, Inc. (NYSE: BY) announced today that it will issue its third quarter 2025 financial results after market close on Thursday, October 23, 2025.

Byline Bancorp will also host a conference call and webcast at 9:00 a.m. Central Time on Friday, October 24, 2025 to discuss its financial results. Analysts and investors may participate in the question-and-answer session.

Conference Call, Replay and Webcast Information:

Date: Friday, October 24, 2025

Time: 9:00 a.m. Central Time

Telephone Access: 833-470-1428; passcode: 463912

Telephone Replay (available through November 7, 2025): 866-813-9403; passcode: 194319

Webcast Access: A live webcast will be available on the News and Events page in the Investor Relations section of the Company’s website. An archived version of the webcast will be available in the same location shortly after the live call has ended.

About Byline Bancorp, Inc.

Headquartered in Chicago, Byline Bancorp, Inc. is the parent company of Byline Bank, a full service commercial bank serving small- and medium-sized businesses, financial sponsors, and consumers. Byline Bank has approximately $9.7 billion in assets as of June 30, 2025 and operates 45 branch locations throughout the Chicago and Milwaukee metropolitan areas. Byline Bank offers a broad range of commercial and community banking products and services including small ticket equipment leasing solutions and is one of the top Small Business Administration lenders in the United States.

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