Current Report · Items 7.01, 9.01 · 8-K

First Business Financial Services, Inc.

FBIZNASDAQEQUITYCurrent

Regulation FD Disclosure

Filed May 5, 2026Accepted May 5, 2026, 7:01 AM EDTCIK 1521951Accession 0001193125-26-204998

Company context

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.

Current securities

FBIZNASDAQ · EQUITY · Current

Recent company filings

Disclosure sections

Items 7.01, 9.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 7.01Item 7.01 - Regulation FD Disclosure

Item 7.01. Regulation FD Disclosure. On May 5, 2026, First Business Financial Services, Inc. (the “Company”) posted an investor presentation to its website www.firstbusiness.bank under the “Investor Relations” tab. The information included in the presentation provides an overview of the Company’s recent operating performance, financial condition, and business strategy. The Company intends to use this presentation from time to time when the Company's executives interact with shareholders, analysts and other third parties. A copy of the registrant’s presentation is attached hereto as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this Current Report on Form 8-K and Exhibit 99.1 attached hereto are being “furnished” pursuant to Item 7.01 of Form 8-K, and will not, except to the extent required by applicable law or regulation, be deemed “filed” by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor will any of such information or exhibits be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as expressly set forth by specific reference in such filing.

Filed exhibits (1)

EX-99.1 (by filename) fbiz-ex99_1.htm

EX-99.1 2 fbiz-ex99_1.htm EX-99.1 NASDAQ: FBIZ Investor PresentationFirst Quarter 2026 When used in this presentation, and in any other oral statements made with the approval of an authorized executive officer, the words or phrases “may,” “could,” “should,” “hope,” “might,” “believe,” “expect,” “plan,” “assume,” “intend,” “estimate,” “anticipate,” “project,” “likely,” or similar expressions are intended to identify “forward‐looking statements” within the meaning of such term in the Private Securities Litigation Reform Act of 1995. Such statements are subject to risks and uncertainties, including among other things: (i) Adverse changes in the economy or business conditions, either nationally or in our markets, including, without limitation, inflation, economic downturn, labor shortages, wage pressures, the adverse effects of public health events on the global, national, and local economy, and geopolitical instability and international conflicts that may affect energy prices of otherwise result in market volatility; (ii) Uncertainty created by potential federal government actions relating to the authority of regulatory agencies (including bank regulators), international trade p…

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