Ahlstrom - Changes in company's own shares

Repurchase of own shares

Stock Exchange Release 23 September, 2011

Date: 23 September 2011
Exchange transaction: Buy
Share class: AHL1V
Amount: 2000

Average price /share: 12.3942 EUR
Highest price /share: 12.4700 EUR
Lowest price /share: 12.1000 EUR
Total price: 24,788.40 EUR

The shares held by Ahlstrom Corporation on 23 September 2011
AHL1V 21,005

AHLSTROM CORPORATION

On behalf of Ahlstrom Corporation

Pasi Väisänen
EVLI BANK PLC


[HUG#1549702]