Subject:_#160;Announcementof compulsory buyout of the Company's shares and suspension of tradingin the Company's shares.ManagementBoard of Ciech S.A. with its registered office in Warsaw (_quot;Company_quot;)informs that today it received information about the intention topurchase all shares of the Company by its shareholder - KI Chemistry S._#224;r.l. with its registered office in Luxembourg (_quot;KI_quot;) by way ofcompulsory buyout (_quot;Compulsory Buyout_quot;). The information on theintention to perform the Compulsory Buyout is available at:https://strefainwestorow.pl/wiadomosci/20231107/informacja-o-zamiarze-nabycia-akcji-spolki-ciech-sa.

Additionally,the Management Board informs that today it received information onresolution No. 1197/2023 of the Management Board of the Warsaw StockExchange S.A. (_quot;WSE_quot;) dated November 6, 2023 on the suspension oftrading on the WSE Main Market in the Company's shares marked with thecode _quot;PLCIECH00018_quot; starting from November 7, 2023. Pursuant to theresolution of the WSE Management Board, suspension of trading in theCompany's shares is caused by the notification of the intention toannounce the Compulsory Buyout of the Company's shares. The text of theresolution of the GPW Management Board is available at:https://www.gpw.pl/pub/GPW/uchwaly/2023/1197_2023.pdf.Legalbasis:Article 17.1 of Regulation of theEuropean Parliament and of the Council (EU) No. 596/2014 of 16 April2014 on Market Abuse (the Market Abuse Regulation) and repealingDirective 2003/6/EC of the European Parliament and of the Council andCommission Directives 2003/124/EC, 2003/125/EC and 2004/72/EC (OfficialJournal of the European Union L No. 173, p. 1).