Basware Corporation ANNOUNCEMENT 18.5.2012 SHARE REPURCHASE 18.5.2012 In the Helsinki Stock Exchange Trade date 18.5.2012 Bourse trade BUY Share BAS1V Amount 3.375 shares Total cost 67.219,50 EUR Average price/ share 19,9169 EUR Highest price/ share 20,00 EUR Lowest price/ share 19,30 EUR Basware Corporation now holds a total of 105.565 shares including the shares repurchased on 18.5.2012. On behalf of Basware Corporation NORDEA BANK FINLAND PLC Petri Simberg Julius Summanen [HUG#1613381]