# EDGAR Filing Document

**Accession Number:** 0001521951
**File Stem:** 0001193125-26-104126
**Filing Date:** 2026-3
**Character Count:** 20419
**Document Hash:** 2d15c92f1d8aedee6a4ad3bb80a30c6f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-104126.hdr.sgml**: 20260312

**ACCESSION NUMBER**: 0001193125-26-104126

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 16

**CONFORMED PERIOD OF REPORT**: 20260312

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260312

**DATE AS OF CHANGE**: 20260312

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIRST BUSINESS FINANCIAL SERVICES, INC.
- **CENTRAL INDEX KEY:** 0001521951
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 391576570
- **STATE OF INCORPORATION:** WI
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34095
- **FILM NUMBER:** 26747695

**BUSINESS ADDRESS:**
- **STREET 1:** 401 CHARMANY DRIVE
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53719
- **BUSINESS PHONE:** 608-238-8008

**MAIL ADDRESS:**
- **STREET 1:** 401 CHARMANY DRIVE
- **STREET 2:** PO BOX 44961
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53744

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** First Business Financial Services, Inc.
- **DATE OF NAME CHANGE:** 20110527

?xml version='1.0' encoding='ASCII'? 8-K

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549**

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## FORM 8-K

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**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported):** March 12, 2026<br>

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First Business Financial Services, Inc.

**(Exact name of Registrant as Specified in Its Charter)**

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| | | |
|:---|:---|:---|
| Wisconsin | 001-34095 | 39-1576570 |
| **(State or Other Jurisdiction<br>of Incorporation)** | **(Commission File Number)** | **(IRS Employer<br>Identification No.)** |
| 401 Charmany Drive |  |  |
| Madison**,** Wisconsin |  | 53719 |
| **(Address of Principal Executive Offices)** |  | **(Zip Code)** |

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**Registrant's Telephone Number, Including Area Code:** 608 238-8008<br>

N/A<br>

**(Former Name or Former Address, if Changed Since Last Report)**

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

**Securities registered pursuant to Section 12(b) of the Act:**

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| | | |
|:---|:---|:---|
| **<br>Title of each class** | **Trading<br>Symbol(s)** | **<br>Name of each exchange on which registered** |
| Common Stock, $0.01 par value | FBIZ | The Nasdaq Stock Market LLC |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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**Item 7.01. Regulation FD Disclosure.**

On March 12, 2026, First Business Financial Services, Inc. (the "Company") published on the Company's Investor Relations webpage a CEO letter discussing the year ended December 31, 2025 and related Company matters. A copy of the letter is attached 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.

**Item 9.01. Financial Statements and Exhibits.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a) Not applicable**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b) Not applicable**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(c) Not applicable**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(d) Exhibits. The following exhibit is being furnished herewith:** 

99.1 [<u>Annual CEO Letter</u>](fbiz-ex99_1.htm) <br> 104 Cover Page Interactive Data File (embedded within the Inline XBRL Document)

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
| March 12, 2026 | **FIRST BUSINESS FINANCIAL SERVICES, INC.** | **FIRST BUSINESS FINANCIAL SERVICES, INC.** |
|  | By: | /s/ Brian D. Spielmann |
|  | Name: | Brian D. Spielmann |
|  | Title: | Chief Financial Officer |

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## Exhibit 99.1

First Business Financial Services, Inc.

**Annual CEO Letter**

Dear Shareholders and Friends of First Business Bank,

Our outstanding 2025 performance reflects our team's exceptional execution of First Business Bank's long-term strategic plan. We expanded our client relationships, generating deposit and loan growth that outpaced the industry. We continued our track record of double-digit annual growth, delivering 10% growth in top-line revenue and more than 14% growth in both pre-tax, pre-provision earnings<sup>1</sup> and earnings per share. We continued to stack strategic successes into consistent and robust bottom-line results.

As I approach my retirement from First Business Bank this coming May, I am struck by how much has changed at our company—and how much has remained steadfastly the same. This year's annual letter offers a special opportunity to not only discuss our most recent year of performance, but to also step back and consider the longer arc of this organization: where we began, how we have evolved, and why we believe we are exceptionally well positioned for the future.

**A Strategic Plan Built for Consistency**

One of the defining characteristics of First Business Bank has always been our commitment to long-term strategic planning and – just as importantly – disciplined execution.

![img222733400_0.jpg](img222733400_0.jpg)

Our strategic plan is not a document we revisit once a year or set aside when conditions become challenging. It is the framework that informs our decisions every day. We invest significant time and energy developing a plan we believe in, and we measure ourselves against it consistently.

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<sup>1</sup> Non-GAAP measurement. Refer to the non-GAAP reconciliation schedule of the Company's Q4'25 earnings release for additional detail.

Member FDIC

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In 2025, that discipline mattered. Interest rate cuts, geopolitical events, and heightened competition all factored in making it an unpredictable operating environment for banks. Against that backdrop, we did what we've always done: control the controllable. We delivered another year of steady, dependable performance. We met or exceeded all the long-term targets outlined in our 2024-2028 plan, reflecting the strength of a diversified model working as intended.

Deposit growth remained central to our strategy. As a business-only bank, we have never operated a branch network. This model suits our high-touch approach perfectly; however, it naturally limits deposit gathering opportunities. From our earliest days, we understood that solving the deposit challenge would be critical to building a sustainable business banking model. To that end, we've honed a deposit-centric sales strategy led by treasury management sales teams located across our bank markets. Our bankers are trained and incentivized to fund their loan production goals with deposit growth goals. Without the expense of operating a branch network, we can offer very ![img222733400_1.jpg](img222733400_1.jpg)competitive rates that drive client loyalty while still achieving our profitability goals.

Our deposit focus has never wavered, and in 2025 it once again proved to be a differentiator. We grew core deposits 12% over 2024, improving our core deposit funding mix to 75% at year-end. This reflects significant growth compared to our 50% mix when we went public 20 years ago. Continued growth in relationships drove this improvement. We track the treasury management fees we earn from providing deposit services as a proxy for relationship growth, and this metric grew at an average annual rate of over 11% over the past five years.

At the same time, we continued to benefit from a more diversified revenue base than at any point in our history. Net interest income and fee income both contributed meaningfully to 2025 results, supported by private wealth management, treasury management, specialty finance, and other fee-generating businesses that did not exist when the bank was founded.

Consistency is not accidental. It is the product of planning, diversification, and execution—and it is what allows us to look ahead with confidence.

**An Organization That Has Evolved—By Design**

To appreciate where we are today, it is worth briefly revisiting where we began.

Jerry Smith founded the bank in 1990 around a then-unconventional idea: an innovative business bank without branches, focused on relationships, disciplined credit, and a matched-funding strategy. Some

Member FDIC

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tactics have evolved— remote deposit capture replaced a courier service that picked up clients' deposits, for example — but the core principles have endured.

In the mid-1990s, our business was concentrated in a single market, with a limited set of deposit, lending, and fee-based offerings. We offered C&I and CRE loans alongside treasury management solutions, in our home Madison market.

I joined the bank in 1993, right before our strategic planning offsite. We had less than $100 million in assets at the time, but we were already thinking about what else strategically fit under the business banking umbrella. Through our active sales calling efforts, we were regularly turning away lending opportunities that didn't quite fit standard commercial lending, and we knew we could do more. So, in 1995, we launched our asset-based lending business, marking a pivotal point in our evolution and setting us on a path toward becoming a diversified business bank. As we have expanded into new areas, we have consistently hired seasoned experts to operate these businesses, both to ensure high quality service to clients, and to avoid any unforeseen pitfalls.

![img222733400_2.gif](img222733400_2.gif)

What has changed most dramatically is **scale and diversification**.

Today, we operate across four bank markets and serve clients through a broad and integrated national platform. Private wealth management, equipment finance, SBA lending, floorplan financing, accounts receivable financing, bank consulting and other services now complement our traditional banking businesses. Our diversified offerings create multiple avenues for revenue growth, including some that are economically counter-cyclical.

Fee income diversification has also become a differentiating strength for First Business Bank over time. Over the past 20 years, our non-interest income<sup>2</sup> has grown at a compound average annual rate of 12% per year, with private wealth management service fees growing more than 14% per year. Even without the benefit of a fee-driven residential mortgage or consumer business, our ratio of fee income to total revenue has grown to exceed our peers in each of the past 10 years.

Of course, this change did not happen all at once. Our evolution has been deliberate, guided by successive strategic plans and an unwavering focus on building capabilities that allow us to grow alongside our clients.

**Creating Long-Term Shareholder Value**

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<sup>2</sup> Reflects non-interest income excluding the impact of one-time items and gains or losses on investment securities sales. Refer to the non-GAAP reconciliation schedule of the Company's Q4'25 earnings release for additional detail.

Member FDIC

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A pivotal moment in our history was our decision to go public, which we completed in October 2005.

That step created liquidity for the original group of 167 shareholders who believed in this company when it was little more than an idea. It also allowed a broader group of investors to participate in our growth through our subsequent public offering.

Since going public, we believe our performance speaks for itself. From October 2005 through January 2026, FBIZ stock produced total shareholder returns of nearly 600%, exceeding the S&P 500 Bank Index by a multiple of three and the S&P 500 Regional Bank Index by a multiple of six. It's worth noting that of the 7,523 commercial banks that operated in 2005, only 3,815 remain today<sup>3</sup>. Our performance has outshined not just a fixed index but rather a constantly shifting selection of banks that "won" in the proverbial "survival of the fittest."

![img222733400_3.jpg](img222733400_3.jpg)

We've built a business model designed to generate sustainable returns over economic cycles. Our consistent execution has supported earnings growth, dividend raises, and stock price appreciation — building enduring value for our shareholders.

As we look ahead, our focus remains the same: disciplined growth, prudent risk management, and consistent execution that supports long-term shareholder returns.

**The Constant That Matters Most: Our People and Culture**

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<sup>3</sup> Source: FDIC Quarterly Banking Profile, Statistics at a Glance. https://www.fdic.gov/quarterly-banking-profile/fdic-statistics-glance.

Member FDIC

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While strategy, diversification, and performance are critical, we believe the true differentiator of our company is culture.

Culture matters.

From the beginning, we have believed that in business banking, **whoever builds the best team wins**. That belief has guided our company and continues to shape how we hire, develop, and support our teams. By emphasizing collaboration, accountability, and long-term thinking, we create an environment where our employees can do their best work for our clients and, ultimately, deliver sustainable value for our shareholders.

We finished 2025 with 365 full-time equivalent employees ("FTE") – up from 18 when I joined bank in 1993, and up by 50% over the past decade. More importantly, we grew revenue *<u>per FTE</u>* 38% over the past decade, contributing to our trend of 40% average outperformance on this metric compared to our peers. Our expenses per FTE have risen at a slower pace, up 30% over the past ten years. This drove meaningful efficiency gains, by design. A bank's efficiency ratio measures the cost of generating every dollar of revenue. Like a golf score, lower is better, and our efficiency ratio<sup>4</sup> has improved by nearly 400 basis points over the past ten years, from 62.75% for 2015 to 58.78% for 2025.

Behind our success is a deeply embedded culture of service and expertise. Client relationships drive our business, and employee engagement drives our relationships. In 2025, First Business Bank employees again reported high engagement. The bank earned an employee engagement rating of 85% in our externally run survey, outperforming the industry benchmark<sup>5</sup> of 78% and meeting our strategic plan goal. This is so important to us that we measure it annually as one of just seven strategic plan goals (as we did in our previous strategic plan as well). As we grow, we know we can't lose sight of the importance of our people and our culture.

Exceptional employee engagement is the driver behind solid public recognition of our culture in recent years. In 2025 we were honored to be recognized by *USA Today* as a "Top Workplace" in the USA for the fourth consecutive year. We were also recognized in our local markets, including Top Workplaces awards in Madison (awarded by WI state journal) and Southeastern Wisconsin (awarded by Milwaukee Journal Sentinel).

When we add new talent to our staff, we tend to keep them. We are proud of the opportunities we provide for people to grow their careers here. As the organization grows, so do the opportunities for our employees. That continuity strengthens client relationships, preserves institutional knowledge, and creates a virtuous cycle: success attracts great people, great people drive better results, and better results create more opportunity.

Satisfied clients create an annuity stream, and we benchmark our performance to continuously improve and track one particularly powerful metric: the Net Promoter Score (NPS). This is measured by an independent firm that asks clients to rate their likelihood of recommending their bank, on a scale of -100 to +100. First Business Bank earned an NPS score of 78 for 2025, significantly outperforming top banks in

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<sup>4</sup> Refer to the non-GAAP reconciliation schedule of the Company's Q4'25 earnings release for additional detail.

<sup>5</sup> Source: Workforce Science Associates, LLC.

Member FDIC

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banking and investments. This is another measure we elevated to primary importance as one of our seven strategic plan goals.

![img222733400_4.jpg](img222733400_4.jpg)

**Looking Ahead to 2026**

We enter 2026 with a clear strategic plan, a diversified and resilient business model, and a team that understands where we come from, where we are going, and how we intend to get there. While external conditions will continue to change—as they always do—we are confident in our ability to adapt without losing sight of the principles that have guided us for decades.

As announced last year, I will retire as CEO effective May 2, 2026, and our President and Chief Operating Officer Dave Seiler will be named President and CEO of First Business Financial Services, Inc. Dave steered the 2024-2028 strategic plan process and is deeply committed to our continued execution and success. I am grateful our team, our communities, and our shareholders will continue to benefit from Dave's deep banking experience and dedication to excellence.

Much has changed since our founding. Many things have improved. But the most important elements—the focus on disciplined strategy, deposit strength, long-term relationships, and a culture built around the best people—remain unchanged.

I sincerely thank you for your relationship with First Business Bank. We are proud of what we have built together and excited about what lies ahead.

Sincerely,

**Corey Chambas, CEO** 

First Business Financial Services, Inc.

parent company of First Business Bank

*This letter includes "forward-looking statements" related to First Business Financial Services, Inc. (the "Company") that can generally be identified as describing the Company's future plans, objectives, goals or expectations. Such forward-looking statements are subject to risks and uncertainties that could cause actual results or outcomes to differ materially from those currently anticipated. These forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. For further information about the factors that could affect the Company's future results, please see the Company's most recent annual report on Form 10-K,* 

Member FDIC

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*quarterly reports on Form 10-Q, and other filings with the Securities and Exchange Commission. We do not intend to, and specifically disclaim any obligation to, update any forward-looking statements.* 

Member FDIC

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