Empresas CMPC S A : Material Fact - Ordinary Shareholders Meeting

Santiago, April 7, 2022

Messrs.

Financial Market Commission

BY MESSENGER

MATERIAL DISCLOSURE

Empresas CMPC S.A.

Securities Registration #115

Dear Financial Market Commission:

Pursuant to Article 9 and the second subparagraph of Article 10 of the Securities Market Law, to Article 63 of the Companies Law (the "Companies Law"), and to the instructions in General Rule 30, please be advised that under due authority, I hereby give notice of the following material disclosure:

Today, the Board of Directors of Empresas CMPC S.A. (the "Company") adopted the following resolutions, among others:

1.

To convene a Regular Shareholders Meeting (the "Meeting") for 11:00 a.m. on April 28, 2022, to be held at Agustinas 1343, city and municipality of Santiago, to submit the following matters to the consideration of the Company's shareholders:

• a. A decision on the Annual Report (Integrated Report), Annual Financial Statements and Opinion of the External Auditing Firm, all corresponding to the fiscal year ending December 31, 2021;

• b. A decision on the distribution of dividends;

• c. A report on the policies and procedures on profits and dividends;

• d. The appointment of the External Auditing Firm and Risk Rating Agencies;

• e. Election of the Board of Directors;

• f. The compensation of the Board of Directors and the compensation and budget of the Directors Committee for the 2022 fiscal year;

• g. A report on the resolutions of the Board involving the transactions referred to in Title XVI of Law 18,046; and

Agustinas 1343, Santiago Chile

Teléfono (56-2) 244 12 000

www.cmpc.cl

h.

The discussion and decision on any other matter within the purview of the Regular Shareholders Meeting pursuant to the Law and the Bylaws.

2.

At the same meeting, the Board approved proposing to the Regular Shareholders Meeting payment of a final dividend of 0.042698 U.S. Dollars per share against distributable net profits from the fiscal year ending December 31, 2021. The payment of such dividend, if approved by the Meeting, will be made May 11, 2022 in either U.S. Dollars or Chilean pesos, at the choice of each shareholder. Shareholders registered in the Shareholders Register as of midnight on May 5, 2022, will be entitled to this dividend.

The Company's Consolidated Financial Statements and the opinion of the External Auditing Firm have been posted on the Company's website,www.cmpc.cl,and can be viewed directly

athttps://s23.q4cdn.com/927837516/files/doc_financials/quarterly/2021/q4/Estados-Financieros-CMPC-Diciembre-2021.pdf.

Way to Attend the Meeting

Since there may be restrictions limiting attendance of the Meeting in person on the date it is to be held, the Company may make technology available to shareholders to attend remotely.

That technology will be informed to shareholders by means of the corresponding notices and letters of convocation.

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