Here are the 8-K filings from Sunshine Silver Mining & Refining Company (SSMR) in our archive since June 2025, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
An 8-K covers material events a company has to report between its quarterly reports, so if you follow SSMR and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full SSMR filings page.
Sunshine Silver Mining & Refining Co (SSMR) reported operational-readiness progress at the Sunshine Mine, supporting a feasibility study targeted for the second quarter of 2027 and a planned return to production in late 2028. Underground development totaled approximately 1,200 meters in the first half of 2026; the company expects approximately 1,300 additional meters in the second half, with approximately 700 meters completed as of September 30, 2026. The 50,000-meter infill drilling program had reached approximately 47,600 meters as of that date, and additional results are expected before year-end.
The company installed approximately 1,200 meters of new rail through September 30 and anticipates another 1,900 meters by year-end; fleet expansion includes acquisition of approximately 20 pieces of mobile equipment. A new production hoist servicing the Jewell Shaft was completed in May 2026; Silver Summit Shaft upgrades are underway, with broader improvements continuing through 2027 and into early 2028. An additional Sterling Ramp portal is expected in the first half of 2027. Legacy mill demolition, begun in 2025, is expected to finish by year-end. The plan assumes initial processing of up to approximately 1,000 tons per day, with the facility designed for potential future throughput up to approximately 2,000 tons per day.
Sunshine Silver Mining & Refining Company (SSMR) announced a major expansion of its mineral rights position in Idaho’s Silver Valley and the launch of a multi-year exploration program. The consolidated land package has increased by approximately 14,100 acres, or 60%, to about 38,000 acres, making the company the largest mineral rights holder in the district.
The company plans a district-scale surface exploration program with about 45,000 meters of drilling across high-priority targets, initially focusing on East Sunshine, Rock Creek and Pine Creek, with surface drilling expected to begin in the fourth quarter of 2026. Sunshine also continues a separate 50,000-meter underground in-fill drilling program at the Sunshine Mine to support a planned 2027 feasibility study and evaluate near-mine resource expansion, with additional downshaft drill results expected in the fourth quarter of 2026.
Sunshine Silver Mining & Refining Company (SSMR) announced that its common stock will be added to the VanEck Junior Gold Miners ETF (GDXJ) effective at market close on September 18, 2026. This follows its initial public offering and NYSE listing completed on June 4, 2026.
The company states that ETF inclusion is expected to increase visibility among institutional and retail investors, expand passive ownership and support trading liquidity. Sunshine continues to focus on advancing the Sunshine Mine in Idaho’s Silver Valley toward a planned return to production in late 2028.
Sunshine Silver Mining & Refining Company reported second-quarter 2026 results after completing its IPO and listing on the NYSE on June 4, 2026. The company ended June 30, 2026 with $288.7 million in cash and cash equivalents and reported it had no debt, providing liquidity to fund feasibility studies, underground development, infrastructure upgrades and exploration at the Sunshine Mine in Idaho’s Silver Valley.
The Sunshine Mine hosts an Indicated Mineral Resource of 103.9 million ounces of silver at 1,022 g/t and an Inferred Mineral Resource of 159.8 million ounces at 776 g/t, based on the company’s S-K 1300 technical report summary. At approximately 1,000 tonnes per day, the mine is expected to produce about 6.7 million ounces of silver per year during its first five years and around 5.8 million ounces annually over a 24-year mine life, with potential throughput expansion to 2,000 tonnes per day under evaluation.
For the second quarter of 2026, Sunshine reported a net loss of $16.7 million, or $0.13 per share, compared with a net loss of $7.0 million in the prior-year period, reflecting accelerated development activities and public-company costs. For the first six months of 2026, net cash used in operating activities was $22.8 million, with $9.5 million used in investing activities and $290.0 million provided by financing activities, primarily from the IPO.
Sunshine Silver Mining & Refining Company reported new high-grade drill results from its ongoing 50,000-metre drilling program at the Sunshine Mine in Idaho’s Silver Valley. Multiple recent intercepts in the Upper Country, including the new 10 Vein, exceed 1,000 grams per tonne silver and are intended to support a planned 2027 Sunshine Mine Feasibility Study and a planned return to silver production in late 2028.
The program was about 60% complete as of July 2026, with three underground drill rigs and completion targeted for October 2026. The Sunshine Mine hosts an Indicated Mineral Resource of 103.9 million ounces of silver at an average grade of 1,022 gpt and an Inferred Mineral Resource of 159.8 million ounces at 776 gpt. At approximately 1,000 tonnes per day, the mine is expected to produce about 6.7 million ounces of silver annually in its first five years and 5.8 million ounces per year over a 24-year mine life, with a Phase 1 objective of doubling throughput to roughly 2,000 tonnes per day.