Stock exchange release

HSE: FORTUM CORPORATION: SHARES SUBSCRIBED WITH OPTION RIGHTS

08 September 2005, 15:44 EEST

EXCHANGE NOTICE 374/2005, 8 September 2005 SHARES

FORTUM CORPORATION: SHARES SUBSCRIBED WITH OPTION RIGHTS A total of 45 000 Fortum Corporation's shares have been subscribed with the Fortum Corporation’s 1999 option rights and 142 500 shares have been subscribed with the Fortum Corporation’s 2002A option rights. The shares will be traded on the Helsinki Stock Exchange as old shares as of 9 September 2005. Identifiers of Fortum Corporation's share: Trading code: FUM1V ISIN code: FI0009007132 Orderbook id: 24271 Number of shares: 872 980 975 HELSINKI STOCK EXCHANGE Janne Seppänen Vice President Surveillance Finland