Ahlstrom - Changes in company's own shares

REPURCHASE OF OWN SHARES

Ahlstrom                                                    
STOCK EXCHANGE ANNOUNCEMENT                                 
28 September 2011                                           
REPURCHASE OF OWN SHARES                                    
Date:                                 28 September 2011     
Exchange transaction:                 Buy                   
Share class:                          AHL1V                 
Amount:                                            4683     
Average price /share:                           12,6170  EUR
Highest price /share:                           12,7000  EUR
Lowest price /share:                            12,5000  EUR
Total price:                                   59085,41  EUR
The shares held by (COMPANY NAME) on  28 September 2011     
AHL1V                                             28288     
Ahlstrom                                                    
On behalf of Ahlstrom                                       
Pasi Väisänen                                               
EVLI BANK PLC