Tekla Corporation STOCK EXCHANGE ANNOUNCEMENT 09 October 2008 ACQUISITIONS OF OWN SHARES Date: 09.10.08 Exchange transaction: Buy Share class: TLA1V Amount: 3100 Average price /share: 5.44677 EUR Highest price /share: 5.50 EUR Lowest price /share: 5.35 EUR Total price: 16884.99 EUR The shares held by Tekla Corporation on 09 October 2008 TLA1V 167604 TEKLA CORPORATION On behalf of Tekla Corporation Teemu Koivisto EVLI BANK PLC