Application for listing of OM AB's shares on the Helsinki Exchanges

Application for listing of OM AB's shares on the Helsinki Exchanges OM Aktiebolag ("OM") has decided to apply for listing of the OM shares on the main list of the Helsinki Exchanges and has today submitted a listing application to the Helsinki Exchanges. The listing of the OM shares on the Helsinki Exchanges relates to the combination of the Swedish company OM and the Finnish company HEX Plc and is subject to the completion of OM's offer to the shareholders and warrant holders of HEX Plc. The intention is that trading in the OM shares would commence on or about 4 September 2003. OM is a world leading provider of transaction technology to the financial services and energy industries. Developing and marketing IT solutions that boost the efficiency of markets worldwide, OM has over 300 customers in 20 countries. OM also owns and operates exchanges and clearing organizations and has operations in 10 countries. OM is listed on Stockholmsbörsen. For more information please visit www.om.com. For further information or comments, please contact: Jakob Håkanson, Vice President, Investor Relations +46 8 405 60 42 ------------------------------------------------------------ This information was brought to you by Waymaker http://www.waymaker.net The following files are available for download: http://www.waymaker.net/bitonline/2003/08/13/20030813BIT00720/wkr0001.pdf