FIRST BUSINESS FINANCIAL SERVICES, INC.
401 Charmany Drive
Madison, WI 53719
Ph: (608) 238-8008

March 10, 2026

VIA EDGAR

United States Securities and Exchange Commission

Division of Corporate Finance

100 F Street, NE

Washington, D.C. 20549

Ladies and Gentlemen:

In accordance with Rule 461 under the Securities Act of 1933, as amended, the undersigned respectfully requests that the effective date of the above-referenced Registration Statement be accelerated so that the same will become effective at 4:00 p.m., Washington, D.C. time, on March 13, 2026, or as soon thereafter as is practicable.

If you have any questions concerning this request, please do not hesitate to contact the Company’s outside counsel, C.J. Wauters, Godfrey & Kahn, S.C., at (414) 287-9663.