From 6 February 2024 in the composition of the Supervisory Board of ORLEN S.A., and from 17 February 2024 to 10 April 2024 temporarily delegated to act as Member of the Management Board of ORLEN S.A.

Mr. Ireneusz Sitarski graduated with a master’s degree in economics from the Faculty of Foreign Trade of the Central School for Economic Planning and Statistics in Warsaw (now the Warsaw School of Economics).

He is an economic adviser specialising in corporate finance, restructuring, and mergers and acquisitions. Over the long span of his career, Mr. Sitarski has carried out advisory projects, developed privatisation strategies, and prepared analyses and valuations for both public and private sector enterprises. He has managed projects to restructure distressed or non-performing loans at Polish banks. He led a company managing a National Investment Fund, executing restructuring projects and supervising and conducting business acquisition and disposal transactions.

Serving in the government administration as Undersecretary of State at the Ministry for the Privatisation and Restructuring of State-Owned Assets (1994–1996) and the Ministry of State Treasury (2001–2003), Mr. Sitarski transformed enterprises wholly-owned by the state into companies in which the State Treasury is a shareholder, supervised their activities, and managed the sale of shares to strategic or financial investors across the fuel, energy, gas, banking, insurance, and lottery sectors.

The companies he helped manage include Warsaw Stock Exchangelisted NFI Foksal S.A. and Impexmetal S.A. At the latter, the parent company of a non-ferrous metal processing group, he coordinated and managed the trade policy as Member of the Management Board, Chief Commercial Officer.

Mr. Sitarski has extensive experience as a member and chair of supervisory boards of a range of companies, including Telekomunikacja Polska S.A., Giełda Papierów Wartościowych S.A., Polskie Towarzystwo Ubezpieczeń S.A., Bank Gospodarki Żywnościowej S.A., Dwory S.A., Huta Aluminium Konin S.A., and PESA Bydgoszcz S.A.

He ran in the 2018 elections for the Provincial Assembly of the Province of Warsaw and the 2019 European Parliament elections and Polish general elections.