May 26, 2006

First Business Bank - Milwaukee Elects Tim Wallen to its Board of Directors

MILWAUKEE, May 26, 2006 - First Business Bank - Milwaukee today announced the election of Timothy J. Wallen, CPA to its Board of Directors. Wallen is Principal and Chief Executive Officer of NAI MLG Commercial. First Business Bank - Milwaukee is part of First Business Financial Services, Inc. (NASDAQ: FBIZ) which also includes First Business Bank - Madison, First Business Trust & Investments, First Business Leasing, and First Business Capital Corp.

"Tim is a respected, high profile member of the business community and possesses tremendous knowledge of the local real estate market. We are very excited that Tim is joining our board," stated Terry Taylor, President and CEO of First Business Bank - Milwaukee.

Tim joined NAI MLG Commercial in 1989 as Chief Financial Officer and was promoted to Chief Executive Officer in 2000. He is a Principal, Officer, and Board member in all of MLG’s development, investment, and brokerage companies. In addition to his responsibilities as CEO, Tim directs MLG’s development and investment companies, raising funds and assisting in the formation of partnerships to purchase real estate. He also manages the assets of all MLG properties, including multi-family housing, residential land, commercial buildings, and business parks.

Prior to joining MLG, Tim was a tax manager with Price Waterhouse in San Francisco where he specialized in income tax planning for partnerships and corporations in the real estate industry. In 1989, he transferred to the company’s Milwaukee office where he was promoted to the position of manager. Tim is a CPA with a master’s degree in accounting along with a bachelor of business administration and accounting from the University of Wisconsin - Madison.

About First Business Bank - Milwaukee First Business Bank - Milwaukee was established in 2000 to provide a full range of commercial banking services to Milwaukee-area businesses and business people. We are chartered as a unit bank with a CEO, not a branch president, and a board of directors rather than an advisory board. This structure allows us to understand Milwaukee-area businesses and respond quickly and proactively to meet their needs.
About First Business Financial Services, Inc.

First Business Financial Services, Inc. (Nasdaq:FBIZ) is a Wisconsin-based bank holding company, focused on the unique needs of businesses, business executives, and high net worth individuals. First Business offers commercial banking, specialty finance, and private wealth management solutions, and because of its niche focus, is able to provide its clients with unmatched expertise, accessibility, and responsiveness. For additional information, visit www.firstbusiness.com or call (608) 238-8008.

The First Business Financial Services, Inc. logo is available at http://www.firstbusiness.com/logo

Forward-Looking Statements
This press release contains forward-looking statements that reflect the Corporation's plans, estimates and beliefs. When used in this press release, the words "anticipate," "believe," "estimate," "expect," "objective" and similar expressions and verbs in the future tense are intended to identify forward-looking statements. The statements contained in this press release involve or may involve certain assumptions, risks, and uncertainties, many of which are beyond the Corporation's control, which could cause actual results to differ materially from those discussed in the forward-looking statements. The forward-looking statements included in this press release are only made as of the date hereof, and the Corporation undertakes no obligation to publicly update such forward-looking statements to reflect subsequent events or circumstances. In addition to the assumptions and other factors referenced specifically in connection with such statements, the factors described in "Item 1A. Risk Factors" in our Annual Report on Form 10-K and the following factors could impact the business and financial prospects of the Corporation: general economic conditions; legislative and regulatory initiatives; increased competition and other effects of deregulation and consolidation of the financial services industry; monetary and fiscal policies of the federal government; deposit flows; disintermediation; the cost and availability of funds; general market rates of interest; interest rates or investment returns on competing investments; demand for loan products; demand for financial services; changes in accounting policies or guidelines; general economic developments; acts of terrorism and developments in the war on terrorism; and changes in the quality or composition of loan and investment portfolios.

Contact:
Jodie Johnson
Assistant Vice President ? Marketing
First Business Financial Services, Inc.
(608) 232-5910
Email