Repurchase of own shares

Ahlstrom Corporation  
STOCK EXCHANGE ANNOUNCEMENT  
  
23 November 2010  
  
  
Date: 23 November 2010 
Exchange transaction: Buy 
  
Share class: AHL1V 
Amount: 4863 
Average price /share: 14.7538 EUR
Highest price /share: 14.8500 EUR
Lowest price /share: 14.6200 EUR
Total price: 71747.73 EUR
  
The shares held by Ahlstrom Corporation on 23 November 2010 
AHL1V 112609 
  
  
AHLSTROM CORPORATION  
  
  
On behalf of Ahlstrom Corporation  
  
  
Teemu Koivisto  
EVLI BANK PLC