Tekla Corporation STOCK EXCHANGE ANNOUNCEMENT 06 October 2008 ACQUISITIONS OF OWN SHARES Date: 06.10.08 Exchange transaction: Buy Share class: TLA1V Amount: 5000 Average price /share: 5.63969 EUR Highest price /share: 5.70 EUR Lowest price /share: 5.50 EUR Total price: 28198.45 EUR The shares held by Tekla Corporation on 06 October 2008 TLA1V 157866 TEKLA CORPORATION On behalf of Tekla Corporation Teemu Koivisto EVLI BANK PLC