Board of OMX Response to Borse Dubai Announcement

The Board of OMX AB (“OMX”) notes the unsolicited offer from Borse Dubai to acquire 100% of the share capital of OMX for SEK 230 per share in cash. The offer is conditional, among other things, on regulatory approvals.

On 25th May 2007, The NASDAQ Stock Market, Inc. (“NASDAQ”) announced a recommended offer for OMX. The Board of OMX will consider the Borse Dubai offer as compared to the NASDAQ offer and will update shareholders in due course.