Karina Szostak close

President of the Management Board

Mrs Karina Szostak graduated from the University of Warsaw, Faculty of Economic Sciences, specializing in finance and banking. She holds an Executive MBA degree from the University of Warsaw in collaboration with the University of Illinois, accredited by AASCB, AMBA, and EQUIS. She also attended the Faculty of Law and Administration at the University of Warsaw.

Karina Szostak has nearly 20 years of experience in various industries, including gas, fuel, energy, chemical, infrastructure, transportation, waste management, and banking.

From 2005 to 2012, she worked in consulting - at Ernst & Young in the transaction advisory department, where she was responsible for financial modeling and financing acquisition, and at Roland Berger Strategy Consultants, where she prepared strategies for corporate banking. She also has experience in the banking sector - at Bank Handlowy in the Treasury Department and at the former Bank BPH in the Corporate Clients Department.

Between 2012 and 2021, she served as Deputy Director of Strategy at PGNiG S.A. (and also Strategy and Regulation) and Deputy Executive Director for Strategy and Innovation, Capital Investments and Investor Relations at PKN Orlen S.A. In these roles, she prepared and supervised numerous strategies for the Capital Group and the Corporation, strategic financial models, and segmental strategies for companies. She also implemented several strategic, development, and acquisition projects, including those for energy, logistics, and storage assets. She also supervised the exploration and production segment.

From 2022 to 2024, she held the position of Director of Production Transformation, Energy Transformation, and Capital Allocation at Qemetica S.A. (formerly Ciech S.A.), where she was responsible for optimizing production assets, energy strategy, and group decarbonization, as well as controlling capital expenditures.

Throughout her career, she has also held several roles in supervisory bodies, including PGNiG Obrót Detaliczny Sp. z o.o. and PGNiG Termika S.A., and holds a diploma for candidates for members of supervisory bodies from the Chancellery of the Prime Minister of Poland (KPRM).

Mariusz Belczyk close

Member of the Management Board

Mr Mariusz Belczyk graduated from the AGH University of Science and Technology in Kraków, Faculty of Drilling, Oil and Gas. He holds an Executive MBA from the Gdańsk Foundation for Management Education in cooperation with the University of Gdańsk, accredited by the Aix-Marseille Graduate School of Management. He also completed Postgraduate Studies in Investment at the Warsaw School of Economics.

He has over 25 years of experience in the gas and energy sector, particularly in the field of infrastructure construction.

From 1999 to 2015, he worked at PGNiG SA in the upstream investment area, especially in projects related to the construction and expansion of Underground Gas Storage facilities, where he served as Project Manager and Director of the Investment Department. Thanks to his commitment, he contributed to the development and construction of Underground Gas Storage facilities located in Poland.

Between 2015 and 2018, he held the position of Deputy Director for Operation and Construction of UGS and was the Management Board Plenipotentiary for Investments at Gas Storage Poland Sp. z o.o. From 2019 to 2025, he served as Director of the Strategy and Investment Department at the PGNiG ORLEN SA Branches Team, implementing investment projects and participating in, among others, M&A and R&D projects.

Throughout his career, he has held supervisory roles, including at the Operator Systemu Magazynowania sp. z o.o. (now Gas Storage Poland sp. z o.o.).