Tieto Corporation Stock Exchange Announcement 19 May 2009 6.30 pm EET Date: 19 May 2009 Exchange transaction: Buy Share class: TIE1V Amount: 18000 Average price /share: EUR 10,29323 Highest price /share: EUR 10,55 Lowest price /share: EUR 10,18 Total price: EUR 185278,14 The number of shares held by the company including the shares acquired on 19 May 2009 TIE1V 503390 Tieto Corporation On behalf of Tieto Corporation Teemu Koivisto EVLI BANK PLC