Ahlstrom - Changes in company's own shares

REPURCHASE OF OWN SHARES

Ahlstrom                                                  
STOCK EXCHANGE ANNOUNCEMENT                               
18 October 2011                                           
REPURCHASE OF OWN SHARES                                  
Date:                                 18 October 2011     
Exchange transaction:                 Buy                 
Share class:                          AHL1V               
Amount:                                          3436     
Average price /share:                         11,3981  EUR
Highest price /share:                         11,5900  EUR
Lowest price /share:                          11,2500  EUR
Total price:                                 39163,87  EUR
The shares held by (COMPANY NAME) on  18 October 2011     
AHL1V                                           47505     
Ahlstrom                                                  
On behalf of Ahlstrom                   
Pasi Väisänen                                             
EVLI BANK PLC