Board of Directors

Miguel Galuccio

Chairman and Chief Executive Officer


Mr. Galuccio is currently an independent member of the board of directors of Schlumberger. Mr. Galuccio served as the Chairman and Chief Executive Officer of YPF, Argentina’s largest oil company, from May 2012 to March 2016, which under his leadership became the largest producer of hydrocarbons from shale formations globally outside North America. Prior to joining YPF, Mr. Galuccio was an employee of Schlumberger and held a number of international positions in the United States, the Middle East, Asia, Europe, Latin America, Russia and China, his last being President of Schlumberger Production Management. Other senior roles held at Schlumberger included President of Integrated Project Management, General Manager for Mexico and Central America and Real Time Reservoir Manager. Prior to his employment at Schlumberger, he served in various executive positions at YPF and its subsidiaries, including YPF International, where he participated in its internationalization process as Manager within Maxus Energy. Mr. Galuccio holds a degree in petroleum engineering from the Instituto Tecnológico de Buenos Aires in Argentina.

Kenneth Ryan

Member of the Board of Vista Oil & Gas in representation of Riverstone


Mr. Ryan is a Partner at Riverstone based in the New York office and responsible for business development within the firm. Prior to joining Riverstone in 2011, Mr. Ryan worked for Gleacher & Company and Gleacher Partners in London and New York, more recently as Managing Director and Co-Head of Investment Banking. Prior to Gleacher, he worked at Goldman Sachs in the US Financial Institutions group in New York, and in the European Financial Institutions and European Advisory groups in London. Mr. Ryan was also co-founder of UCTX, a European internet and media company which he sold in 2001. Currently he serves as member of the investment committee at Riverstone Credit Partners and as member of the board of Riverstone Energy Limited, HES International and Trailstone. Mr. Ryan graduated from the University of Dublin Law School, Trinity College.

Susan Segal

Independent member of the Board of Vista Oil & Gas


Ms. Segal was appointed President and General Director of Americas Society/Council of the Americas in 2003, after working in the private sector in Latin America and other emerging markets throughout more than 30 years. Prior to her current appointment, she was a Partner at Chase Capital Partners/JPMorgan Partners with a focus on private equity in Latin America and pioneering venture capital investments in the region. In her phase as a banker, she focused in investment banking, founding a trading unit for emerging market bonds and, was actively involved in the Latin American debt crisis in the 1980s and 1990s, serving as President of the Board for the Advisory Committees of Chile and Philippines. Ms. Segal is a member of the Board of Americas Society/Council of the Americas, the Tinker Foundation, Scotiabank and Mercado Libre, as well as President of the Board of Scotiabank USA, a private subsidiary of ScotiaBank. She is also a member of the Council on Foreign Relations. Distinctions received by Ms. Segal include Orden Bernardo O’Higgins (Chile); Orden de San Carlos (Colombia); Orden del Aguila Azteca (Mexico); and the Chamber of Commerce North America-Chile recognized her as Honorary Chilean of the Year in 2013. Ms. Segal graduated from Sarah Lawrence University and received an MBA from Columbia University in the United States.

Anthony Lim

Independent member of the Board of Vista Oil & Gas


Mr. Lim is and advisor at GIC Private Limited, where he previously held the position of Director and President for America. In this role, he was responsible for operations of GIC’s offices in New York, San Francisco and Sao Paulo. He left this position in December 2016. Prior to his appointment to the United States in 2009, he was President of GIC in London for 11 years and helped boost the expansion of GIC in Europe and the Middle East. Prior to joining GIC, he was General Manager in Bankers Trust Company and held various positions of high level within the Global Markets Division in Singapore and London. He started his career at the Monetary Authority of Singapore (MAS), where his last position was Currency, Liquidity and Gold Director within the International Division. Mr. Lim currently serves as a member of the Global Advisory Board of Teach for All, an organization dedicated to global education. Mr. Lim is a Founding Member of the Global Advisory Board of the Woodrow Wilson Center in Washington DC. Additionally, Mr. Lim serves in the Expert Advisory Board and the Surveillance of Asset Management of External Clients Committee (ECAM) of the World Bank Treasury and was a member of the Board for Hedge Fund Standards from 2007 to 2016. He graduated from Singapore National University and completed a Management Program at Harvard Business School.

Mark Bly

Independent member of the Board of Vista Oil & Gas


Mr. Bly has more than 30 years of experience in the oil and gas industry, occupying various executive positions at an international level at British Petroleum (BP). Mr. Bly led several E&P key units in Alaska, the North Sea and in North America. After that, he was part of the E&P Executive Group, in charge of monitoring an international portfolio with units in Angola, Trinidad, Egypt, Algeria and the Gulf of Mexico. Mr. Bly led the internal investigation of the Deepwater Horizon incident in 2010, and is the author of “Bly Report” that defined the understanding of such event by the industry and represented the founding of the new organization and global drilling practices program within BP. His last role in BP was Executive Vice President of Security and Operational Risk, where he led the global effort, resulting in security and reliability improvements in the operating units of BP after the incident in the Gulf of Mexico in 2010. He is currently an advisor of the Board of Ayata, a company focused on artificial intelligence and prescriptive analysis that provides services to several industries, including the oil and gas industry. Mr. Bly received a Master’s in Structural Engineering from Berkeley University in California and Civil Engineering at Davis University in California.

Mauricio Doehner

Independent member of the Board of Vista Oil & Gas


Mauricio Doehner Cobián has been Executive Vice President of Corporate Affairs and Enterprise Risk Management for CEMEX since May 2014 and is a member of its Executive Committee, reporting directly to the CEO. Mr. Doehner joined CEMEX in 1996 and has held several executive positions in such areas as Strategic Planning and Enterprise Risk Management for Europe, Asia, the Middle East, South America, and Mexico. In particular, he led the interactions and collaboration with various federal governments around the world along with the evaluation of tax regimes, public policy initiatives, and crisis management. Additionally, he worked for the Office of the Mexican Presidency, heading communications with the Mexican public, including diverse issues ranging from governmental reforms to the national budget. Mr. Doehner also worked for Violy Byorum & Partners Investment Bank, reaching the position of Chief of Staff of Violy McCausland, the CEO of the firm. Currently, he is Chairman of the Board of the Cámara Nacional de Cemento (CENACEM) and is a board member of Trust of the Americas, the Confederation of Industrial Chambers, the Center of Citizen Integration, and the Cámara de la Transformación de la Industria de Nuevo León. Mr. Doehner also leads a seminar on economic, financial, and political analysis at the Tecnológico de Monterrey and is a contributor to Business Club Magazine. Mr. Doehner has a B.A. in Economics from the Tecnológico de Monterrey, a Master’s of Business Administration from IESE/IPADE, and a Professional Certificate in Competitive Intelligence from the FULD Academy of Competitive Intelligence in Boston, Massachusetts.