PKN ORLEN ("Company") informed that on 22 June 2021 it signed the agreement for building of Olefins III unit complex ("Investment") in EPCC formula (Engineering, Procurement, Construction and Commissioning) for ISBL with the companies: Hyundai Engineering Co. Ltd. and Técnicas Reunidas S.A. The Investment is a part of Petrochemical segment development program, announced by the Company on 12 June 2018. Total cost of the Investment is estimated at the level of ca. PLN 13,5 billion. Closing of the building phase of the investment is planned for the first quarter 2024 and start of production at the Olefins III Complex for the beginning of 2025.