TietoEnator Corporation Stock Exchange Release 11 June 2007, 3.15 Pm EET TietoEnator's President and CEO Pentti Heikkinen's aortic valve insufficiency will be operated in the week starting 11 June. His sick leave will start on 11 June and he is expected to return to work normally in mid-August. In the meantime the CEO's duties will be assumed by TietoEnator's Deputy CEO Åke Plyhm. TIETOENATOR CORPORATION DISTRIBUTION Helsinki Stock Exchange Stockholmsbörsen Principal Media TietoEnator is among the leading architects in building a more efficient information society and one of the largest IT services providers in Europe. TietoEnator specializes in consulting, developing and hosting its customers' business operations in the digital economy. The Group's services are based on a combination of deep industry-specific expertise and the latest information technology. TietoEnator has about 16 000 experts in close to 30 countries. www.tietoenator.com