Stock exchange release

HSE: FORTUM CORPORATION: SHARES SUBSCRIBED WITH OPTION RIGHTS

07 June 2006, 13:43 EEST

EXCHANGE NOTICE 262/2006, 7 JUNE 2006 SHARES

FORTUM CORPORATION: SHARES SUBSCRIBED WITH OPTION RIGHTS A total of 1 161 630 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 8 June 2006. Identifiers of Fortum Corporation's share: Trading code: FUM1V ISIN code: FI0009007132 Orderbook id: 24271 Number of shares: 882 707 855 HELSINKI STOCK EXCHANGE Janne Seppänen Head of Surveillance