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FIRST BUSINESS FINANCIAL SERVICES, INC.

For the period ended Dec 31, 2025. Filed Feb 25, 2026.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 25, 2026

FBIZ$75.81+2.2%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

FIRST BUSINESS FINANCIAL SERVICES, INC.
February 25, 2026/s/ Corey A. Chambas
Corey A. Chambas
Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

SignatureTitleDate
/s/ Corey A. ChambasChief Executive Officer and DirectorFebruary 25, 2026
Corey A. Chambas(principal executive officer)
/s/ Brian D. SpielmannChief Financial OfficerFebruary 25, 2026
Brian D. Spielmann(principal financial officer)
/s/ Kevin D. CramptonChief Accounting OfficerFebruary 25, 2026
Kevin D. Crampton(principal accounting officer)
/s/ Gerald L. KilcoyneChair of the Board of DirectorsFebruary 25, 2026
Gerald L. Kilcoyne
/s/ Laurie S. BensonDirectorFebruary 25, 2026
Laurie S. Benson
/s/ Carla C. ChavarriaDirectorFebruary 25, 2026
Carla C. Chavarria
/s/ Jason R. GrahamDirectorFebruary 25, 2026
Jason R. Graham
/s/ Ralph R. KautenDirectorFebruary 25, 2026
Ralph R. Kauten
/s/ W. Kent LorenzDirectorFebruary 25, 2026
W. Kent Lorenz
/s/ Daniel P. OlszewskiDirectorFebruary 25, 2026
Daniel P. Olszewski
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.