Fiserv President and CEO Leslie Muma To Speak at William Blair Conference; Live Webcast PlannedBROOKFIELD, Wis.--June 20, 2005--Fiserv, Inc. (Nasdaq:FISV) will Webcast Fiserv President and Chief Executive Officer Leslie M. Muma's presentation at the William Blair & Company 25th Annual Growth Stock Conference on Tuesday, June 21, 2005 at the Four Seasons Hotel in Chicago. The live Webcast and archived replay can be accessed on the Fiserv Web site at www.fiserv.com.

The Webcast of Muma's presentation will begin at 1:10 p.m. Central time on June 21. An archive of the presentation will be available from shortly after the call until 5 p.m. on July 20, 2005.

Fiserv, Inc. (Nasdaq: FISV) provides industry leading information management systems and services to the financial and health benefits industry, including transaction processing, outsourcing, business process outsourcing and software and systems solutions. The company serves more than 16,000 clients worldwide, including banks, credit unions, financial planners/investment advisers, insurance companies and agents, self-funded employers, lenders and savings institutions. Headquartered in Brookfield, Wis., Fiserv reported $3.4 billion in processing and services revenues for 2004. Fiserv was ranked the largest provider of information technology services to the U.S. financial services industry in the 2004 FinTech 100 survey by the American Banker newspaper and the Financial Insights research firm. Fiserv can be found on the Internet at www.fiserv.com.