Tekla Corporation STOCK EXCHANGE ANNOUNCEMENT 09 September 2008 ACQUISITIONS OF OWN SHARES Date: 9.9.2008 Exchange transaction: Buy Share class: TLA1V Amount: 4000 Average price /share: 7,17809 EUR Highest price /share: 7,20 EUR Lowest price /share: 7,10 EUR Total price: 28712,36 EUR The shares held by Tekla Corporation on 09 September 2008 TLA1V 130123 TEKLA CORPORATION On behalf of Tekla Corporation Teemu Koivisto EVLI BANK PLC