Invitation to press and analyst briefing

In conjunction with the release of the OMX Year-end Financial Statement 2004, we would like to invite you to a press and analyst briefing at OMX’s head office: Place: Tullvaktsvägen 15, Stockholm Date: Wednesday, February 2, 2005 Time: 11.00 CET OMX’s President and CEO Magnus Böcker will present the company’s financial results in English together with CFO Kristina Schauman. Following the presentation a light lunch will be served. For those unable to attend, the presentation will be broadcast live on www.omxgroup.com. It will also be possible to listen in through a conference call by dialing the following numbers: UK +44 (0)207 162 0181, US +1 334 323 6203, Sweden +46 8 505 201 14. Presentation slides will be made available five minutes before the start of the briefing at www.omxgroup.com. A copy of the webcast, including the presentation slides, will be available on OMX’s website later in the afternoon on February 2 at www.omxgroup.com. Sincerely, Jakob Håkanson VP, Head of IR Please RSVP by February 1, 2005 before 16.00, either by faxing this form to +46 8 24 97 99, by sending an e-mail to pia.grimberg@omxgroup.com or by contacting Pia Grimberg at +46 8 405 66 09. ____ Yes, I will be able to attend. ____ No, I am unable to attend. Name ……………………………………………Telephone………………………….………. Company ………………………………………………………………………………….…