The conclusion of an annex concerning a material agreement

Legal basis: Article 17(1) of Regulation (EU) No. 596/2014 of the European Parliament and of the Council of 16 April 2014 on market abuse (market abuse regulation) and repealing Directive 2003/6/EC of the European Parliament and of the Council and Commission Directives 2003/124/EC, 2003/125/EC and 2004/72/EC.

Referring to current report no. 48/2016, the Management Board of "Polimex-Mostostal" SA having its registered address in Warsaw (hereinafter referred to as the "Company") announces that today the consortium of the Company and Mitsubishi Hitachi Power Systems Europe GmbH (hereinafter referred to as "MHPS") (hereinafter referred to as the "Consortium") and Enea Wytwarzanie sp. z o.o. (hereinafter referred to as the "Ordering Party") have concluded an annex regarding an updated schedule for the construction of unit no. 11 in Kozienice constituting the subject matter of the contract about which the Company notified in current report no. 80/2012 (hereinafter referred to as the "Contract").

The parties thereto extended the deadline for the execution of the Contract by 19 December 2017. The postponement of the deadline results from reasons beyond the control of the parties to the Contract.

The Company would like to inform you that the value of the Contract shall not change following the execution of the annex.