NASDAQ OMX Nordic Test systems will be upgraded with the next CLICK XTTM and SECURTM release, version 19.0-0216. Scheduled maintenance for external CLICK/SECUR test systems during the following periods. System: External Test System 1 Date: Monday 19th April, 2010 Hours of outage: All day, open again for testing Tuesday 20th April, 2010 System: External Test System 3 Date: Friday 16th April, 2010 Hours of outage: All day, open again for testing Monday 19th April 12, 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