BROOKFIELD, Wis. (12/6/07)--Fiserv Inc. announced that it has completed the acquisition of CheckFree Corp. Under terms of the transaction, Fiserv acquired the company for $4.4 billion in cash, or $48 per share. Fiserv also announced that its co-founder, Norm Balthasar, senior executive vice president and CEO, will retire from his position Dec. 21. He will remain with the company through June 30 to assist with the CheckFree integration. Fiserv, based in Brookfield, provides information management and electronic commerce systems and services to the financial industry. CheckFree, based in Norcross, Ga., is a provider of financial electronic commerce services and products, including electronic bill pay and Internet banking. More than 3,000 financial services websites use CheckFree’s products.