Mr. Guillermo Nielsen became Chairman of YPF, Argentina’s leading energy company, in December 2019. With an extensive experience in both the private and public sector, in Argentina and abroad, he is also a Member of the Board of Grupo San José (Spain) and of Carlos Casado (Argentina).
He served as Secretary of Finance of Argentina’s Ministry of Economy and Production (2002-2005). In that role, he led the restructuring of Argentina’s public debt and two stand-by agreements with the IMF, which was at the time the largest and most complex restructuring in history. He was later appointed Minister of Treasury of the City of Buenos Aires (2006) and Argentina’s Ambassador in the Federal Republic of Germany (2008-2010).
Previously, he was President & CEO of UNITEC SemiCondutores (Brazil), and an executive of Socma Americana and The Campbell Soup Company. He also served as Trade Negotiator in GATT – General Agreement on Tariffs and Trade and with the EEC – European Economic Community (Belgium), and was Chief Economist at the Argentine thinktank FIEL – Fundación de Investigaciones Económicas Latinoamericanas.
He obtained a degree in Economics from Universidad de Buenos Aires, and he is a Ph.D. Candidate and holds a M.A. in Economics from Boston University. He currently serves as Consulting Member of the Argentine thinktank CARI – Consejo Argentino para las Relaciones Internacionales.