Repurchase of own shares

Ahlstrom Corporation  
STOCK EXCHANGE ANNOUNCEMENT  
  
08 December 2010   
  
Date: 08 December 2010 
Exchange transaction: Buy 
  
Share class: AHL1V 
Amount: 5000 
Average price /share: 14.6940 EUR
Highest price /share: 14.7200 EUR
Lowest price /share: 14.6300 EUR
Total price: 73470.00 EUR
  
The shares held by Ahlstrom Corporation on 08 December 2010 
AHL1V 145958 
  
  
AHLSTROM CORPORATION  
  
On behalf of Ahlstrom Corporation  
   
Teemu Koivisto  
EVLI BANK PLC