Investor Presentaiton

Corporate Group 1P Reserves: 2008 - 2020 (e) IRR ** 1P Reserves* (million barrels of oil & gas equivalent) 63% Reserves Addition (million barrels of oil & gas) 164% 193% 351% 1,857 1,714 1,538 46% 1.473 1,137 5,836 2008 2009 2010 2011 2008 - 2011 2012-2020 (e) * According to SEC prices and methodology **RRI: Reserve replacement index Source: Ecopetrol 60% Years 17

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