November 19, 2005

Kilcoyne Joins First Business Bank Board

MADISON, September 19, 2005 - First Business Bank announced today that Jerry Kilcoyne, President of Top Promotions and Wisconsin Active Sportswear, has been elected to its Board of Directors.

Jerry started his career at Wisconsin & Southern Railroad and then with its parent Northbrook Corp. where he worked until 1990 as Controller and then Vice President in the mergers and acquisitions area. He then purchased the railroad freight car portion of that company, Northbrook Rail Corp., leasing rail cars and containers to end users in the grain, steel, aggregate, and coal industries. He sold Northbrook Rail Corp. in 1996 and moved back to Wisconsin. Jerry acquired a majority interest in Top Promotions in 1997 and purchased what is now Wisconsin Active Sportswear in 1998.

"We’re very pleased to have Jerry join our Board," stated Michael Losenegger, President and COO of First Business Bank. "Jerry will make an excellent Board member as he brings with him a wealth of business expertise. We value his diverse business background as well as his entrepreneurial spirit."

About First Business Bank First Business Bank was established by business owners and investors in 1990 to specialize in quality business banking for the local business community. First Business Bank offers a full line of deposit and loan products for businesses and business owners, including cash management products, Internet banking, retirement plans/investment management services/trustee services, asset-based lending, and leasing.

About First Business Financial Services, Inc.

First Business Financial Services (Nasdaq:FBIZ) is a $1.3 billion Wisconsin-based bank holding company that specializes in focused financial solutions for businesses, key executives, and high net worth individuals through its operating companies. Its companies include: First Business Bank - Madison; First Business Bank - Milwaukee; First Business Bank - Northeast; First Business Trust & Investments; First Business Equipment Finance, LLC; and First Business Capital Corp. 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