Sunshine Silver Mining & Refining Company appointed Mike Patterson as Vice President of Investor Relations and Corporate Development, effective September 16, 2026. Reporting to Chief Executive Officer Heather White, Patterson will lead investor relations, support capital-markets engagement and evaluate strategic opportunities as the company advances the planned restart of the Sunshine Mine in Idaho, which is expected to return to production in late 2028. Patterson brings experience in mining engineering, private equity, business development and corporate strategy from Luminant, Rio Tinto, Resource Capital Funds, KoBold Metals and Ivanhoe Electric Inc. The appointment, identified in an SSMR stock-news announcement, strengthens Sunshine’s leadership team and supports its plans for domestic silver and other critical-minerals production.