Trading in Diadrom Holding shares will commence today on First North in Sweden. Including Diadrom Holding, First North now comprises 97 companies. Diadrom Holding AB is a holding company with two wholly owned subsidiaries, Diadrom Systems AB and Diadrom Simulation AB, which were acquired in March, 2007. The company provides professional services in the areas of geometric simulation and process simulation. Diadrom also engages in strategic R&D projects within these areas. The group is situated in Gothenburg, Sweden. “We warmly welcome Diadrom Holding to First North. Diadrom Holding is the twentieth company to join First North this year and the company is a valuable contribution to our Information Technology sector”, says Jenny Rosberg, President of Company Services at OMX. Thenberg & Kinde AB is Certified Adviser for Diadrom Holding. A round lot of shares in Diadrom Holding, whose short name is DIAH, amounts to 500 and the company is included in the Information Technology sector. For further information, please contact Jonas Rodny, OMX Nordic Exchange +46 8 405 72 67 About OMX | OMX is a leading expert in the exchange industry. Through the Nordic Exchange, OMX offers access to approximately 80 percent of the Nordic and Baltic securities market. The Nordic Exchange is a term used for marketing purposes and is not a legal entity. It describes the common offering from the Helsinki Stock Exchange, Copenhagen Stock Exchange, Stockholm Stock Exchange, Iceland Stock Exchange, Tallinn Stock Exchange, Riga Stock Exchange and Vilnius Stock Exchange. OMX integrated technology solutions cross the transaction chain enabling efficient securities transactions for over 60 exchange organizations in more than 50 countries. OMX is a Nordic Large Cap company in the Financials sector on the OMX Nordic Exchange. For more information, please visit www.omxgroup.com.