NASDAQ OMX Nordic Test systems will have a scheduled maintenance for external CLICK/SECUR test systems during the following period. System: External Test System 1 Date: Wednesday 2nd June, 2010 Hours of outage: All day, open again for testing Thursday 3rd June, 2010 For further information concerning this exchange notice please contact Fredrik Olofsson or Jonas Buskas, telephone +46 8 405 73 60, or derivatives@nasdaqomx.com. NASDAQ OMX Nordic