Stock exchange release

HSE: FORTUM CORPORATION: SHARES SUBSCRIBED WITH OPTION RIGHTS

08 September 2006, 11:05 EEST

EXCHANGE NOTICE 392/2006, 8 SEPTEMBER 2006 SHARES

FORTUM CORPORATION: SHARES SUBSCRIBED WITH OPTION RIGHTS A total of 566.150 shares have been subscribed with the Fortum Corporation’s 2001A, 2001B and 2002A option rights. The shares will be traded on the Helsinki Stock Exchange as old shares as of 11 September 2006. Identifiers of Fortum Corporation's share: Trading code: FUM1V ISIN code: FI0009007132 Orderbook id: 24271 Number of shares: 883.274.005 HELSINKI STOCK EXCHANGE Janne Seppänen Head of Surveillance