Tieto Corporation STOCK EXCHANGE RELEASE 23 March 2010, 4.00 pm EET Tieto Corporation has received an announcement pursuant to the Securities Market Act regarding a change in its shareholding. Goldman Sachs has announced that its current aggregate holding in Tieto Corporation has exceeded the 5% threshold. Target company: Tieto Corporation, Business Identity Code: 0101138-5 Date of change in holding: 19 March 2010 Portion of the shares and votes: The current combined holding in Tieto Corporation of Goldman Sachs is 3 640 745 shares, which represents 5.05% of the shares and voting rights. This position is held at the following entities (number of shares; % of shares and votes): Goldman Sachs International (3 501 947; 4.86%) Goldman Sachs Asset Management, L.P. (113 853; 0.16%) JB Were Asset Management (24 945; 0.03%) The registered number of shares of Tieto Corporation is 72 023 173, which entitles to a total of 72 023 173 votes. For further information, please contact Reeta Kaukiainen, VP, Communications and Investor Relations, tel. +358 2072 68711, +358 50 5220924, 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 expertise in digital services set us apart from our competitors. www.tieto.com <http://www.tieto.com/> [HUG#1396692]