Investor Presentation FY 2010

Quarterly Revenues in € million 175- 150 125- 100- +25% 75- +9% 50. 25- 0 Investor Presentation FY 2010 Hanover, 23 March 2011 42,6 78,9 Q1 Q2 w 53,7 +22% 2008 2009 2010 2 83,8 +21% 51,0 +20% 88,1 +12% 62,4 +31% +16% +46% 109,7 74,5 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Fluctuations in growth rates: seasons, weather, base effects, strategy At a glance Business Model Profit & Loss Balance Sheet Outlook 102,9 +17% 79,7 Q3 +48% - - 175 - 150 125 +28% - 100 162,6 Q4 75 - - 50 - 25 0 DELTICOM 13 Aktiengesellschaft

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