Ahlstrom - Changes in company's own shares

REPURCHASE OF OWN SHARES

  Ahlstrom Corporation                                             
  STOCK EXCHANGE ANNOUNCEMENT                                      
  13 December 2010                                                 
  REPURCHASE OF OWN SHARES                                         
  Date:                                       13 December 2010     
  Exchange transaction:                       Buy                  
  Share class:                                AHL1V                
  Amount:                                                 1092     
  Average price /share:                                14.6500  EUR
  Highest price /share:                                14.6500  EUR
  Lowest price /share:                                 14.6500  EUR
  Total price:                                        15997.80  EUR
  The shares held by Ahlstrom Corporation on  13 December 2010     
  AHL1V                                                 150000     
  AHLSTROM CORPORATION                                             
  On behalf of Ahlstrom Corporation                                
  Teemu Koivisto                                                   
  EVLI BANK PLC