Addleshaw Goddard is proud to have advised ORLEN S.A., one of Central and Eastern Europe’s largest energy companies and a regional leader in fuel retailing and refining, on its acquisition of 100% of shares in S54 sp. z o.o. from Synthos S.A., a leading European producer of synthetic rubber and polymer materials. S54 is currently constructing a butadiene extraction unit at Production Plant in Płock, Poland. The new facility will produce butadiene – a key raw material for synthetic rubber and other chemical products – and supply additional by-products, further supporting ORLEN’s growth in the sector.
The transaction, valued at approximately PLN 692 million (EUR 163 million), was signed and closed on 18 December 2025. It involved navigating a complex contractual landscape between ORLEN, Synthos, and S54, including the renegotiation of supply and offtake agreements.
Transaction was led by Adam Usiądek and Krzysztof Górny, supervised by Marcin Schulz and Cezary Wiśniewski, with support from our dedicated AG team: Jakub Kurach, Katarzyna Magnuska, Barbara Wanat, Piotr Jelito, Jakub Dąbrowski, Aleksandra Czubek, Szymon Sieniewicz, Wojciech Podlasin, Jakub Gerula and Łukasz Burakowski. EY acted as financial and tax advisor to ORLEN, and Rymarz Zdort Maruta advised the seller.
We congratulate ORLEN S.A. on this strategic investment and thank all parties for their collaboration in delivering this strategic transaction.
