First Business Bank to Participate in Sidoti’s Year End Virtual Investor Conference on December 11, 2025

About this update from First Business Financial Services, Inc.

MADISON, Wis., December 08, 2025 --( BUSINESS WIRE )--First Business Financial Services, Inc. (the "Company" or "First Business Bank") (Nasdaq:FBIZ) will participate in the Sidoti & Company Year End Virtual Investor Conference on Thursday, December 11, 2025. Corey A. Chambas, Chief Executive Officer, David R. Seiler, President and Chief Operating Officer, and Brian D. Spielmann, Chief Financial Officer, will present an overview of the Company’s operations, strategy, and financial results via live webcast at 1:00 p.m. EST. They will also host one-on-one investor meetings throughout the day. The webcast may contain forward-looking statements and other material information. About First Business Bank First Business Bank® specializes in Business Banking, including Commercial Banking and Specialty Finance, Private Wealth, and Bank Consulting services, and through its refined focus delivers unmatched expertise, accessibility, and responsiveness. Specialty Finance solutions are delivered through First Business Bank’s wholly owned subsidiary First Business Specialty Finance, LLC®. First Business Bank is a wholly owned subsidiary of First Business Financial Services, Inc®. (Nasdaq: FBIZ). For additional information, visit firstbusiness.bank . View source version on businesswire.com: https://www.businesswire.com/news/home/20251208606042/en/ Contacts Brian Spielmann, Chief Financial Officer 608-232-5977 [email protected]

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