First Business Financial Services, Inc. Mourns Death of Dedicated Board Member John J. Harris

First Business Financial Services, Inc., parent company of First Business Bank, is saddened to share that John J. Harris, 72, passed away on November 13, 2024. John served as a distinguished member of the First Business Financial Services, Inc. Board of Directors for 12 years, including six years serving concurrently on the First Business Bank board, making invaluable contributions to the company’s growth and success.

"John's passing is a profound loss to our First Business Bank family," said Corey Chambas, CEO of First Business Financial Services, Inc. "His exceptional leadership, particularly as Chair of the Capital & Acquisitions Committee, helped shape our strategic direction. Beyond his professional achievements, John was a deeply respected colleague and friend who brought wisdom and integrity to our organization."

During his tenure, John served in several key leadership positions, including on the Audit Committee, Corporate Governance and Nominating Committee, and Operational Risk Committee, as well as Chair of the Capital & Acquisitions Committee from 2018 to 2024. His extensive, successful career in investment banking spanned over two decades, including senior positions at Stifel Nicolaus Weisel, Piper Jaffray, William Blair & Co., and ABN Amro, where he specialized in financial institutions and capital markets. This deep expertise in banking and financial services proved fundamental in guiding the bank's strategic initiatives.

A graduate of the Naval Academy, John served his country with distinction on nuclear submarines before earning his MBA from the University of Chicago. His combination of military service, academic excellence, and professional achievement exemplified the highest standards of leadership and dedication.

John is survived by his wife, Ginger, three children, and three grandchildren. The Board and First Business Financial Services, Inc. employees extend their heartfelt condolences to the Harris family and join them in honoring his remarkable legacy.

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. Member FDIC

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Jen Braico First Business Bank 608-232-5773 [e-mail]