Tieto Corporation Stock Exchange Announcement 22 May 2009 6.30 pm EET Date: 22 May 2009 Exchange transaction: Buy Share class: TIE1V Amount: 18610 Average price /share: EUR 10,02814 Highest price /share: EUR 10,26 Lowest price /share: EUR 9,84 Total price: EUR 186623,69 The number of shares held by the company including the shares acquired on 22 May 2009 TIE1V 540000 Tieto Corporation On behalf of Tieto Corporation Teemu Koivisto EVLI BANK PLC