Tieto Corporation Stock Exchange Release 1 April 2010, 9.45 am EET On 31 March 2010, a total of 4 400 Tieto's shares have been returned free of consideration to the company. The transaction is related to the company's Share Ownership Plan 2006-2008. The shares were conveyed in connection with the reward payment of earning period 2008 and are now returned due to the fact that the terms regarding service conditions of the holders were not fully met. The company now holds a total of 545 900 own shares. For further information, please contact: Jukka Karjalainen, Vice President, Compensation & Benefits, tel. +358 40 508 8526 TIETO CORPORATION DISTRIBUTION NASDAQ OMX Helsinki NASDAQ OMX Stockholm Principal Media Tieto is an IT service company providing IT, R&D and consulting services. With approximately 17 000 experts, we are among the leading IT service companies in Northern Europe and the global leader in selected segments. We specialize in areas where we have the deepest understanding of our customers' businesses and needs. Our superior customer centricity and Nordic expertise set us apart from our competitors. www.tieto.com <http://www.tieto.com/> [HUG#1400152]