F-Secure Corporation ANNOUNCEMENT 15.9.2011 SHARE REPURCHASE 15.9.2011 In the Helsinki Stock Exchange Trade date 15.9.2011 Bourse trade BUY Share FSC1V Amount 20.000 shares Total cost 40.166,26 EUR Average price/ share 2,0083 EUR Highest price/ share 2,03 EUR Lowest price/ share 1,97 EUR F-Secure Corporation now holds a total of 3.799.719 shares including the shares repurchased on 15.9.2011. On behalf of F-Secure Corporation Nordea Bank Finland Plc Petri Simberg Julius Summanen