AMENDMENT NO.2 TO THE CONTRACT RESULTING FROM THE COMMERCIAL OFFER DATED DECEMBER 17, 2009 FOR THE PURCHASE OF CHAZA BLOCK OILContract for the Purchase of Crude Oil • August 9th, 2011 • Gran Tierra Energy, Inc. • Crude petroleum & natural gas
The contracting parties: ECOPETROL S.A., decentralized entity of national order, incorporated by means of Law 165 of 1948, with Tax ID No. 899-999-068-1, organized as a Mixed Economy Company according to the dispositions of article No. 2 of Law 1118 of 2006, linked/related to the Ministry of Mines and Energy, with domicile in Bogota D.C., hereinafter referred in this Amendment as THE BUYER, represented by CLAUDIA L. CASTELLANOS R, of age and domiciled in this city, identified with citizenship card No. 63.314.635 issued in Bucaramanga, who in capacity of VICE-PRESIDENT OF SUPPLY AND MARKETING and with authorization contained in the Delegation Manual, acts on behalf of this Company, and on the other hand, GRAN TIERRA ENERGY COLOMBIA, LTD., with Tax ID No. 860.516.431-7, hereinafter THE SELLER represented by ALEJANDRA ESCOBAR HERRERA, identified with citizenship card No. 52.646.943 who acts in her capacity as Legal Representative and is duly authorized to execute this Amendment as recorde
