Management

Sergii Koretskyi has more than 20 years of experience in oil production and refining, energy retail, wholesale management, and international financing.

He previously headed the Western Oil Group, and served as CEO of the Continuum Group and WOG.

He has substantial experience in managing large-scale investment projects and M&A transactions. He was a co-founder and Chairman of the Board of the energy trading company Centurion Group SA (Switzerland).

From November 9, 2022, Mr. Koretskyi held the position of Director of Ukrnafta and Ukrtatnafta. Under his leadership, Ukrnafta increased oil and gas production and became a profitable state-owned company while posting record financial results.

Since May 14, 2025, he has served as Chairman of the Board of Naftogaz of Ukraine.

He holds degrees in Mechanical Engineering and Business Economics from Lutsk Technical University, as well as a degree in Oil and Gas Production from Ivano-Frankivsk National Technical University of Oil and Gas.

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Oksana Volynets has over 20 years of legal experience, with a strong focus on corporate governance, mergers and acquisitions, and complex corporate litigation.

She has led the relevant departments at Continium Group and PJSC Ukrnafta.

She earned her law degree from Lesya Ukrainka Volyn National University.

Has over 10 years of experience in the oil and gas industry.

Previously, he held a similar position at PJSC Ukrnafta, where he was responsible for purchasing and selling petroleum products, managing supply logistics, trading in gas and electricity, developing the gas station network, and facilitating B2B fuel sales to corporate clients.

Prior to joining Ukrnafta, he served as Chief Commercial Officer at Ukrgasvydobuvannya (2015-2023), where he also sat on the Executive Board. At the same time, he headed Naftogaz Oil Trading from 2019 to 2022.

In 2022-2023, he served as a volunteer in the Armed Forces of Ukraine.

He holds a master's degree in political science from the National University of Kyiv-Mohyla Academy and an MBA from the Kyiv School of Economics.

Olena Artazei brings over 15 years of experience in human resources, organizational development, and change management across both the public and private sectors.

She previously worked as HR and Customer Service Director at WOG, HR Director at Ukravit, and Head of the Department for Monitoring and Performance Evaluation at the State Property Fund of Ukraine.

From 2022 to 2025, she held the position of HR Director at Ukrnafta. Olena has been recognized as one of the top 10 HR directors in Ukraine.

In June 2025, she was appointed to the Management Board of Naftogaz Group.

She holds a degree in journalism from Dnipropetrovsk National University.

He has over 10 years of management experience in finance and investments, strategy and analytics at leading Ukrainian business groups. He joined Naftogaz as Strategy and Business Development Director, where he was responsible for transforming the corporate centre's operating model, reviewing the investment portfolio, implementing strategic development initiatives, and assessing financial and economic standing of the business. 

Before joining Naftogaz, he headed the strategy and organisational development division at Vitagro Group. From 2018 to 2024, he was in charge of investment development, strategic planning and financial analytics at Fozzy Group. He began his career working in financial and economic analytics, investment assessment, macroeconomic forecasting, and analysis.

He holds an Executive MBA from IE Business School (Madrid, Spain) and a PhD in Economics (Finance). He graduated with honours from Taras Shevchenko National University of Kyiv with a bachelor's and master's degree in finance.