18 December 2009 Exchange Notice NASDAQ OMX Copenhagen Change in tax rate for after tax yield NASDAQ OMX Copenhagen today calculates after tax yield on bonds based on the tax model for private investors, i.e. you only pay tax on interest earned whereas capital gains are exempted from taxation. The tax rate used for after tax yield calculations will from 1 January 2010 be changed from 45 % to 51.5 %. The new tax rate is based on an investor being in the top bracket and represents the highest tax rate payable on capital income. The after tax yield rates are available in the Daily Pricelist and in the GENIUM Consolidated Feed. The after tax average yields are available on the NASDAQ OMX Webpage. For further information concerning this exchange notice please contact Poul Erik Egeberg, +45 33 93 33 66, or poer@nasdaqomx.com NASDAQ OMX Copenhagen