Tieto Oyj - Changes in company's own shares

Acquisition of own shares by Tieto on 20 May 2009

Tieto Corporation Stock Exchange Announcement 20 May 2009 6.30 pm EET

Date:                                    20 May 2009
Exchange transaction:                    Buy

Share class:                             TIE1V
Amount:                                  18000
Average price /share:                    EUR         10,49785
Highest price /share:                    EUR         10,55
Lowest price /share:                     EUR         10,39
Total price:                             EUR         188961,30

The number of shares held by the company
including the shares acquired on         20 May 2009

TIE1V                                    521390


Tieto Corporation


On behalf of Tieto Corporation



Teemu Koivisto

EVLI BANK PLC