Tieto Corporation Stock Exchange Release 25 May 2009, 12.30 pm EET Tieto has completed the share repurchase programme of 252 610 shares according to the decision announced on 24 April 2009. The share repurchases relate to the company's incentive programme for key personnel announced in December 2008 (Performance Share Plan 2009-2011). Shares were purchased to accomplish and hedge the incentive scheme and they will be used as potential reward payments in accordance with the plan criteria. Own shares were purchased with the company's distributable funds thus reducing the company's distributable non-restricted equity. Shares were purchased at market price in public trading on NASDAQ OMX Helsinki. The average purchase price per share was EUR 10.14393 and the total amount EUR 2 562 459.17. At the moment, Tieto Corporation holds a total of 540 000 own shares. For further information, please contact: Jukka Karjalainen, Vice President, Compensation & Benefits, tel. +358 40 508 8526 Reeta Kaukiainen, EVP, Communications and Investor Relations, tel. +358 2072 68711, +358 50 522 0924, reeta.kaukiainen@tieto.com 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 16 000 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