Santiago, April 12, 2022

Messrs.

Financial Market Commission

BY MESSENGER

MATERIAL DISCLOSURE

Empresas CMPC S.A.

Securities Registration #115

Dear Financial Market Commission:

Pursuant to Articles 9 and 10 third subparagraph of the Securities Market Law and to General Rule 30 of the Financial Market Commission, please be advised that under due authority, I hereby notify you that today, CMPC signed the "Termo de Fechamento",through which it took control of the forest and industrial assets of the pulp, paper and sack businesses of Iguazú Celulose, Papel S.A., located in the States of Paraná and Santa Catarina of Brazil, as previously informed to the market by material disclosed dated December 8, 2021. The takeover took place according to the terms and condition set forth in the abovementioned material disclosure.

Sincerely yours,

Francisco Ruiz-Tagle Edwards

Chief Executive Officer EMPRESAS CMPC S.A.

cc:Santiago Stock Exchange Electronic Exchange of Chile Risk Rating Commission

Agustinas 1343, Santiago Chile

Teléfono (56-2) 244 12 000

www.cmpc.cl

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Empresas CMPC SA published this content on 12 April 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 12 April 2022 20:34:18 UTC.