Sierra Madre Gold and Silver Ltd. (TSXV: SM) (OTCQX: SMDRF) is a precious metals producer and exploration company focused on the operation, exploration, and development at its Guitarra mine complex in the Temascaltepec mining district, Mexico. The Guitarra mine is a permitted underground mine, which includes a 500 tpd processing facility that operated until mid-2018 and restarted commercial production in January 2025. In June 2026, Sierra Madre closed the acquisition of the Del Toro silver mine, adding a past-producing, fully permitted asset to its Mexico-focused silver and gold portfolio.

The Company also holds the +2,600 ha Tepic Project, which hosts low-sulphidation epithermal gold and silver mineralization with an existing historic resource. Sierra Madre´s management team has played key roles in managing the exploration and development of silver and gold mineral reserves and mineral resources. Sierra Madre´s team of professionals has collectively raised over $1 billion for mining companies.