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Management
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Yuriy VitrenkoCEO of NaftogazYuriy Vitrenko has many years of management experience in the energy sector and investment banking. From December 2020 to April 2021, he served as Acting Minister of Energy of Ukraine.
Before his appointment to the Ministry, Yuriy spent six years at the Ukrainian national oil & gas company “Naftogaz of Ukraine”, holding different positions there, including Executive Director (2018-2020), Chief Commercial Officer (2016-2018), Director for Business Development (2014-2016). On those positions, he focused on reforming the energy sector and ensuring Ukraine's energy security.
Among Yuriy’s most important accomplishments are the successful arbitration cases against Gazprom which were resolved in accordance with the rules of the Arbitration Institute of the Stockholm Chamber of Commerce, as well as diversifying sources of natural gas which allowed Ukraine to eliminate its critical dependence on Gazprom. He initiated and successfully led the implementation of projects on developing a competitive wholesale gas market in Ukraine and its integration into the EU market.
Previously, Yuriy was CEO at the investment company AYA Capital and COO at private equity fund Amstar Europe, a subsidiary of the US-based investment management company Amstar (2008-2010). In 2005-2006, Yuriy was an Associate at the London office of investment bank Merrill Lynch.
Yuriy started his career at PricewaterhouseCoopers LLC (1998-2002) as a Senior Consultant in the Management Consulting Services Department after graduating from Kyiv National University of Economics.
Yuriy holds an MBA from the INSEAD international business school (France, Singapore).
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Mavriky KaluginMember of the Executive Board since September 2021, Chief Operating Officer (COO) of Naftogaz Group.Mavriky Kalugin was born in Nikolayevsk (Alaska, USA). He has 25 years of experience in the oil and gas industry around the world, and has a range of professional experience in managing the production and service companies, greenfield development, and the optimization of oil and gas brownfield production.
Before joining National Joint Stock Company “Naftogaz of Ukraine”, Mavriky Kalugin worked for PJSC Ukrnafta for five years as an advisor to the Chairman of the Executive Board, Deputy Chairman of the Executive Board, and Executive Vice President for Production and Processing. The new approaches suggested by Mavriky Kalugin have helped Ukrnafta stabilize hydrocarbon production despite a smaller investment program scope.
Mavriky Kalugin previously held senior positions at companies such as Petrofac, Cairn India, BP, TNK-BP, Occidental Petroleum, ConocoPhillips and ARCO. He graduated from the University of Idaho (USA).
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Olena BoichenkoMember of the Executive Board, Chief Human Resource Officer of NJSC “Naftogaz of Ukraine”Olena Boichenko has 17 years experience in human resources management.
While working at “Big Four” companies, she implemented a number of large-scale HR transformations.
Prior to joining Joint Stock Company “National Joint Stock Company Naftogaz of Ukraine”, June 2021, she worked in the consultancy area as Director of Human Capital Advisory Services at Deloitte Ukraine, and advised international and Ukrainian companies in various fields.
She obtained a Master’s degree in economic theory at National University of Kyiv-Mohyla Academy.
On September 28, 2021, she was appointed a member of the Board of Naftogaz of Ukraine.
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Roman ChumakMember of the Executive Board since September 2021Head of Treasury Operations of Naftogaz Group – Head of Treasury Department of Joint Stock Company “National Joint Stock Company Naftogaz of Ukraine”. On September 28, 2021, he was appointed a member of the Board of Naftogaz of Ukraine.
Roman Chumak is responsible for establishing relations of Naftogaz Group companies with banks and financial institutions, attracting financing in domestic and international financial markets, short-term planning and balancing of the Group’s liquidity, transactions with securities, and other treasury operations of the Group.
Roman is one of the most experienced employees of Joint Stock Company “National Joint Stock Company Naftogaz of Ukraine”. He has been working for the Company for more than nineteen years, holding positions from chief specialist to department head. Prior to that, he worked in large banking institutions and private business.
He graduated from the Kyiv State University of Trade and Economics with a degree in economics. He holds a Ph.D. in Economics and MBA.
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Vladyslav VolovykMember of the Executive Board since September 2021Adviser to Chief Executive Officer of Joint Stock Company “National Joint Stock Company Naftogaz of Ukraine”.
Prior to his appointment as a member of the Executive Board, Vladyslav Volovyk was head of branch at the Centre of Metrology and Natural Gas Distribution Systems of Public Joint Stock Company National joint-stock company “Naftogaz of Ukraine”, and worked as the Deputy Director of Affiliated Company “Gas of Ukraine” of National Joint Stock Company “Naftogaz of Ukraine”.
Prior to that, he practiced civil, corporate, commercial and tax law. He has been practicing law since 2001. He was also engaged in academic and teaching activities.
Vladyslav Volovyk holds a PhD in Law. He has some 20 scientific publications to his name, including in scientific and practical commentary on the Civil Code of Ukraine in the Encyclopedia of Civil Law.