Stockholm, Sweden - 24th February, 2012 - Transmode Holding AB (publ), a global supplier of packet-optical networking solutions has been informed that three of its shareholders, Amadeus General Partner Limited, HarbourVest International Private Equity Partners IV - Direct Fund L.P., and EEP Managers Ltd, have sold in total 2,042,522 shares, representing 7.4 % of the total number of outstanding shares and votes in the company. For more information please contact: Ola Elmeland Vice President Marketing & Communications Transmode Systems AB Telephone: +46 8 506 882 71 Email:ola.elmeland@transmode.com About Transmode Transmode is a global provider of packet-optical networking solutions that enable fixed line and mobile network operators to cost effectively address the capacity needs created by the rapid growth in video and data traffic. These solutions are important building blocks in next-generation high-speed optical networks that support services such as broadband backhaul, mobile data backhaul, video delivery services and cloud computing. Transmode's solutions are based on Wavelength Division Multiplexing (WDM) and packet optical transport technologies, which are designed to increase the capacity, flexibility and functionality of optical metro core and metro access networks. Transmode's Intelligent WDM (iWDM(TM)) approach gives key advantages to customers, such as ultra-low latency, low power consumption and innovative network design. Transmode is headquartered in Stockholm, Sweden and is listed on the NASDAQ OMX Stockholm Exchange (TRMO). Since 2000 the company has installed more than 30,000 systems for over 400 fixed and mobile network operators, service providers, large enterprises and public institutions in over 40 countries across the globe. For additional information about Transmode, please visit www.transmode.com. [HUG#1588820]