Hechos Esenciales Emisores Chilenos Un proyecto no oficial. Para información oficial dirigirse a la CMF https://cmfchile.cl

CEMENTOS BIO BIO S.A. 2023-03-29 T-14:19

C

Essential Fact
CEMENTOS BÍO BÍO S.A.

Registration of Securities Registry N%122

Santiago, March 29, 2023

Gentlemen
Financial Market Commission
Present

From our consideration:

By virtue of the provisions of Article 9 and paragraph 2 of Article 10 of Law No. 18,045, and
in accordance with the provisions of Section II of General Standard No. 30 and Circular
N*660, both from the former Superintendency of Securities and Insurance, now the Market Commission
Financial, in my capacity as Corporate General Manager of Cementos Bío Bío S.A., and empowered
expressly for this purpose by the Board of Directors of the Company, I come to inform you of the following:

At its Ordinary Meeting held today, the Board of Directors of the Company agreed:

1. To call the Ordinary Shareholders’ Meeting for April 27, 2023 at 3:00 p.m., at
offices of the Company, located at Avenida Gran Inglaterra N* 1725, Talcahuano, and submit to the
consideration by the Board of all matters within its competence, including the following:
matters:

i. Examination of the Company’s situation, report, balance sheet and financial statements and report
of the external auditors, corresponding to the financial year 2022, distribution of profits and
distribution of dividends;

ii. Dividend policy;

Lil. Annual Management Report 2022 and 2023 budget of the Directors’ Committee and
remuneration of its members;

iv. Remuneration of the members of the Board of Directors;

v. Appointment of external auditors and risk rating agencies for the year
2023;

vi. Operations referred to in Title XVI of Law 18,046;

vii. Determination of the newspapers in which future summonses to Boards of Directors will be published
Shareholders; and

viii, Any other matter that is not within the competence of the Extraordinary Meeting of
Shareholders.

2. To propose to the Ordinary Shareholders’ Meeting the distribution of a final dividend amounting to
$3,170,652,000, corresponding to the amount of $12 (twelve pesos) per share, which is equivalent to
30.03% of the profits of the year ended December 31, 2022, and whose payment will be proposed
Carry out as of May 23, 2023 to the shareholders registered in the respective Registry to the
midnight on the fifth business day prior to the date of payment.

3. Authorize and make available to shareholders and other persons who must attend and participate
in accordance with the law, the use of technological means that allow them to participate and
remote voting at the Ordinary Shareholders’ Meeting in accordance with the applicable regulations.
The Company will inform on its website www.cbb.cl, as well as in the notices and summonses to the Meeting
Ordinary, the mechanism of remote participation and voting and the way in which each shareholder, or
Your representative may prove your identity and power, if applicable.

The holders of the shares that
are registered in the Register of Shareholders at midnight on the fifth business day preceding the date
of celebration of the aforementioned Meeting.

In case of doubts or queries and in order to facilitate participation in the Ordinary Meeting, the
shareholders may contact the Company at the following email:
Investors(Ocbb.cl.

The Annual Report, Balance Sheet and Financial Statements of the Company, the corresponding report of the
external auditors and the documents that substantiate the various options to be submitted to the

consideration of the Ordinary Shareholders’ Meeting will be duly published on the website
of the www.cbb.cl Society.

Without further ado, we greet you very sincerely,

CEMENTOS BIO-BIO S.A.

ique Elsaca Hirmas
Corporate General Manager

Link to file in CMFChile: https://www.cmfchile.cl/sitio/aplic/serdoc/ver_sgd.php?s567=ada5d153daa17c02d16ac529ec2c7dcdVFdwQmVVMTZRWHBOUkVWNlRXcFZNMDFSUFQwPQ==&secuencia=-1&t=1682376108

Por Hechos Esenciales
Hechos Esenciales Emisores Chilenos Un proyecto no oficial. Para información oficial dirigirse a la CMF https://cmfchile.cl

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