Mr. Vilas joined Tristone Capital in February 2007 as Managing Director of the Buenos Aires office. Mr. Vilas has over 25 years experience as an investment banker, most of which dedicated to serving the energy industry in Latin America, having been based in Buenos Aires, Caracas and London. He has been actively involved in M&A, Project Finance, Public Equity, Capital Markets and Structured Finance transactions for the Oil & Gas, Power and Petrochemical sectors. Since 1995, Mr. Vilas has led or been a key participant in teams conducting M&A and Capital Markets transactions for over $10 billion in Colombia, Ecuador, Venezuela, Argentina, Peru, Trinidad & Tobago and Bolivia. Before joining Tristone, Mr. Vilas was Managing Director in charge of the Latin American activities of Scotia Waterous having overseen the establishment and development of that firm's practice since the opening in 2001. Prior thereto, Mr. Vilas was the Managing Director in charge of J.P. Morgan Chase's Energy Group for Argentina. Mr. Vilas is a native Spanish speaker and is fluent in French, Portuguese and Italian, in addition to English. He holds a Degree in Business Administration from the Universidad Católica Argentina, in Buenos Aires, Argentina.

Ms. Carolina Sona joined Tristone in August 2007. She has over 13 years of experience in the oil and gas industry with companies such as AEC, Petrobras, CGC, Repsol and Pioneer. Ms. Sona has a diverse and extensive industry track record, having focused on reservoir engineering, operations, completions, exploitation, development, project evaluation, business development and acquisitions & divestitures. Her experience includes works in Argentina, Ecuador and Venezuela.

Ms. Sona holds a degree in Petroleum Engineering from the Instituto Tecnológico Buenos Aires (ITBA), in Argentina.