Sierra Metals Inc. (TSX: SMT | OTCQX: SMTSF | BVL: SMT) ("Sierra Metals" or "the Company") announces the filing at the Lima Stock Exchange (“BVL”) by its subsidiary, Sociedad Minera Corona S.A. ("Corona") of its unaudited Financial Statements and the Management’s Discussion and Analysis ("MD&A") for the first quarter of 2025 ("Q1 2025").

The Company holds an 81.84% interest in Corona. The unaudited Financial Statements and MD&A can be viewed at:

SMV -- Superintendencia del Mercado de Valores -- Información Financiera

To search for the Company’s financial statements, enter the following parameters in the empty fields:

Empresa: Sociedad Minera Corona S.A. Periodo: 2025 and Trimestre I

About Sierra Metals

Sierra Metals is a Canadian mining company focused on copper production with additional base and precious metals by-product credits at its Yauricocha Mine in Peru and Bolivar Mine in Mexico. The Company is intent on safely increasing production volume and growing mineral resources. Sierra Metals has recently had several new key discoveries and still has many more exciting brownfield exploration opportunities in Peru and Mexico that are within close proximity to the existing mines. Additionally, the Company has large land packages at each of its mines with several prospective regional targets providing longer-term exploration upside and mineral resource growth potential.

For further information regarding Sierra Metals, please visit www.sierrametals.com or contact:

Investor Relations Sierra Metals Inc. Tel: +1 (866) 721-7437 Email: info@sierrametals.com

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