An anonymous director reports

SIERRA METALS SUBSIDIARY IN PERU, SOCIEDAD MINERA CORONA REPORTS Q3 2023 FINANCIAL RESULTS

Sierra Metals Inc.'s subsidiary, Sociedad Minera Corona SA, has filed its unaudited financial statements and the management's discussion and analysis (MD&A) with the Lima Stock Exchange (BVL) for the third quarter of 2023 (Q3 2023).

The company holds an 81.8-per-cent interest in Corona. The unaudited financial statements and MD&A can be viewed at the Superintendencia del Mercado de Valores website.

To search for the company's financial statements, enter the following parameters in the empty fields:

• Empresa: Sociedad Minera Corona SA;
• Periodo: 2023 and trimestre 3.

Sierra Metals will be releasing its Q3 2023 consolidated financial results premarket open on Monday, Nov. 13, 2023, with management hosting a conference call and webcast on the same day at 11 a.m. ET.

About Sierra Metals Inc.

Sierra Metals is a Canadian mining company focused on copper production with additional base metal and precious metal byproduct credits at its Yauricocha mine in Peru and the 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.