EXCHANGE NOTICE 26/2007, 25 JANUARY 2007 SHARES TIETOENATOR OYJ: INVALIDATION OF SHARES TietoEnator Oyj has invalidated 1 750 000 of its own shares. Decrease in the share capital has been entered into the Trade Register 25 January 2007. Identifiers of TietoEnator Oyj's share: Trading code: TIE1V ISIN code: FI0009000277 Orderbook id: 24376 Number of shares: 74 096 462 HELSINKI STOCK EXCHANGE Janne Seppänen Head of Surveillance