Compañia de Minas Buenaventura S.A.A. (“Buenaventura” or “the Company”) (NYSE: BVN; Lima Stock Exchange: BUE.LM), Peru’s largest publicly-traded precious metals mining company, today announced 3Q22 results for production and volume sold.

1. 2022 outlook projections shown above are considered forward-looking statements and represent management’s good faith estimates or expectations of future production results as of October 2022.

3Q22 Comments

Tambomayo:

• 3Q22 gold, lead and zinc production exceeded expectations due to an increase in grade and metallurgical recovery. 2022 guidance has subsequently been updated.
• 3Q22 silver production was in line with expectations for the quarter. 2022 guidance remains unchanged.

Orcopampa:

• 3Q22 gold production exceeded expectations due to an increase in treated ore and higher gold grades. 2022 guidance has been updated.

Coimolache:

• 3Q22 gold production was in line with expectations for the quarter. 2022 guidance remains unchanged.

La Zanja:

• 3Q22 gold production was below expectations for the quarter. 2022 guidance has been updated to reflect slower than expected gold extraction from the leach pad, requiring a portion of the expected 2022 production to carry forward into 2023.
• As was previously announced, Pampa Verde open pit production will conclude by the end of October 2022. Nevertheless, leaching will continue at La Zanja’s San Pedro pad for as long as this remains profitable. Copper sulfide exploration will continue within La Zanja's operational footprint.

Julcani:

• 3Q22 silver production exceeded expectations due to increased treated ore and higher silver grades. 2022 guidance has therefore been updated.

Uchucchacua:

• Exploration and mine development continues as planned at the Uchucchacua mine. The 2H23 target to resume production remains unchanged.
• Yumpag project construction and permitting continue according to schedule. The 1H24 target to begin production remains unchanged.

El Brocal:

• 3Q22 lead and zinc production exceeded expectations due to an increase in grade and metallurgical recovery from open pit´s low-grade stockpiles. 2022 guidance has subsequently been updated.
• Rehabilitation works are progressing as planned at El Brocal’s western wall due to the previously announced March 2022 landslide. Production within the pit continue as planned outside of the area in process of rehabilitation.
• 3Q22 gold exceeded expectations due to an increase in grade and metallurgical recovery from the underground mine. 2022 guidance has subsequently been updated.
• 3Q22 copper and silver production was in line with expectations for the quarter. 2022 guidance remains unchanged.

3Q22 Payable Volume Sold

Appendix

Company Description

Compañía de Minas Buenaventura S.A.A. is Peru’s largest, publicly traded precious and base metals Company and a major holder of mining rights in Peru. The Company is engaged in the exploration, mining development, processing and trade of gold, silver and other base metals via wholly-owned mines and through its participation in joint venture projects. Buenaventura currently operates several mines in Peru (Orcopampa*, Uchucchacua*, Julcani*, Tambomayo*, La Zanja*, El Brocal and Coimolache).

The Company owns 19.58% of Sociedad Minera Cerro Verde, an important Peruvian copper producer (a partnership with Freeport-McMorRan Inc. and Sumitomo Corporation).

For a printed version of the Company’s 2021 Form 20-F, please contact the persons indicated above, or download a PDF format file from the Company’s web site.

(*) Operations wholly owned by Buenaventura

Note on Forward-Looking Statements

This press release may contain forward-looking information (as defined in the U.S. Private Securities Litigation Reform Act of 1995) that involve risks and uncertainties, including those concerning Cerro Verde’s costs and expenses, results of exploration, the continued improving efficiency of operations, prevailing market prices of gold, silver, copper and other metals mined, the success of joint ventures, estimates of future explorations, development and production, subsidiaries’ plans for capital expenditures, estimates of reserves and Peruvian political, economic, social and legal developments. These forward-looking statements reflect the Company’s view with respect to Cerro Verde’s future financial performance. Actual results could differ materially from those projected in the forward-looking statements as a result of a variety of factors discussed elsewhere in this Press Release.

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