Repurchase of own shares

Ahlstrom Corporation STOCK EXCHANGE RELEASE 11.11.2010 at 17.30 CET                     
Date:                                11 November 2010
Exchange transaction:     Buy
Share class:                    AHL1V       
Amount:                           6000          
Average price /share:      14.6993      EUR
Highest price /share:       14.8000      EUR
Lowest price /share:        14.5500      EUR
Total price:                       88195.80    EUR
The shares held by Ahlstrom Corporation on 11 November 2010    
AHL1V                              93000        
AHLSTROM CORPORATION                       
On behalf of Ahlstrom Corporation                
Teemu Koivisto