Repurchase of own shares(23)

Ahlstrom Corporation

STOCK EXCHANGE ANNOUNCEMENT
September 28, 2011

Repurchase of own shares
Date: September 28, 2011
Exchange transaction: Buy
Share class: AHL1V
Amount: 4683
Average price /share: 12.6170 EUR
Highest price /share: 12.7000EUR
Lowest price /share: 12.5000 EUR
Total price: 59085.41EUR

The shares held by Ahlstrom Corporation on September 28, 2011
AHL1V 28,288

Ahlstrom Corporation

On behalf of Ahlstrom

Pasi Väisänen

EVLI BANK PLC