Sunshine Silver Mining & Refining Reports Second Quarter 2026 Results

Successful IPO, High-Grade Drilling Results and Infrastructure Progress Advance Planned Return to Production KELLOGG, Idaho , Aug. 12, 2026 /PRNewswire/ -- Sunshine Silver Mining & Refining Company (the "Company" or "Sunshine") (NYSE: SSMR ), a mining company advancing the next chapter of American silver, today announced its financial and operating results for the quarter ended June 30, 2026, and provided an update on activities at its principal asset, the Sunshine Mine, located in Idaho's Silver Valley — one of the most prolific silver districts in the United States.

"The second quarter, marked by the successful completion of our initial public offering and listing on the New York Stock Exchange, was transformational for the iconic mine known throughout the Silver Valley as The Shine — and for the American silver industry," said Heather White, Chief Executive Officer of Sunshine Silver Mining and Refining Company.

The Sunshine Mine is the highest-grade primary silver resource in North America, hosting an Indicated Mineral Resource of 103.9 million ounces of silver at an average grade of 1,022 grams per tonne silver and an Inferred Mineral Resource of 159.8 million ounces of silver at an average grade of 776 grams per tonne silver. 1 At approximately 1,000 tonnes per day ("tpd"), the mine is expected to produce an average of approximately 6.7 million ounces of silver per year in its first five years of production, and some 5.8 million ounces of silver annually over a generational 24-year mine life. 2 This output would establish Sunshine as one of the largest primary silver producers in the United States, 3 with additional upside from copper, lead and antimony by-product credits that have not yet been captured in the technical report summary, but are being substantiated by the Company's drill programs as well as a long history of actual production of these other important critical minerals.

The Company's ambition is to significantly expand the estimated silver production. As part of the Sunshine Mine Feasibility Study, the Company is advancing plans for a new mill designed to process up to 2,000 tpd, providing flexibility to increase throughput beyond the current base case of approximately 1,000 tpd as the resource base and operating plan evolve.

Key Highlights from the Second Quarter Successful Public Listing: The Company completed its initial public offering ("IPO") and began trading on the New York Stock Exchange on June 4, 2026.

Strong Cash Position: The Company ended the quarter with $288.7 million in cash and cash equivalents, positioning Sunshine to complete its feasibility studies, and advance its exploration drilling, underground development and infrastructure upgrades at the Sunshine Mine.

Feasibility Studies Advanced: Sunshine advanced technical partnerships and specialized contractor engagements to support completion of the 2027 Sunshine Mine Feasibility Study. The Company is also completing feasibility studies related to the potential restart of the Silver-Copper Refinery and construction of an Antimony Plant, both targeted for completion in early 2027. Major permits are in place to support the restart of the processing and refining complex at Sunshine.

Existing Infrastructure Strengthened: The Company commissioned a new operating hoist for...