Ahlstrom Corporation STOCK EXCHANGE ANNOUNCEMENT 08 November 2010 REPURCHASE OF OWN SHARES Date: 08 November 2010 Exchange transaction: Buy Share class: AHL1V Amount: 2600 Average price /share: 14.7689 EUR Highest price /share: 14.9500 EUR Lowest price /share: 14.5400 EUR Total price: 38399.14 EUR The shares held by Ahlstrom Corporation on 08 November 2010 AHL1V 83600 AHLSTROM CORPORATION On behalf of Ahlstrom Corporation Teemu Koivisto EVLI BANK PLC