EXCHANGE NOTICE 38/2007, 7 FEBRUARY 2007 SHARES AHLSTROM CORPORATION: SHARES SUBSCRIBED WITH OPTION RIGHTS A total of 56 955 Ahlstrom Corporation's shares have been subscribed with the option rights 2001. The shares will be traded on the Helsinki Stock Exchange as old shares as of 8 February 2007. Identifiers of Ahlstrom Corporation's share: Trading code: AHL1V ISIN-code: FI0009010391 Orderbook id: 33661 Number of shares: 45 718 692 HELSINKI STOCK EXCHANGE Janne Seppänen Head of Surveillance