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Sunshine Silver Mining & Refining Announces Inclusion in Solactive Global Silver Miners Index

Sunshine expects index inclusion to broaden its visibility among institutional investors and benchmark-tracking funds.

(Moderate)

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

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Sunshine Silver Mining & Refining (NYSE:SSMR) announced its addition to the Solactive Global Silver Miners Index, effective at market open November 2, 2026.

The inclusion follows its June 4, 2026, NYSE debut. The company expects broader visibility among institutional investors and funds using the index as a benchmark. Sunshine targets a return to production in late 2028 and projects silver will contribute more than 90% of expected revenue at planned production. That projection uses its initial assessment's base-case silver production and assumptions about metal prices and by-product production.

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2 points · 0 major

How this balance works

Rhea-AI gives every point it takes from this document a weight. Minor counts 1, Moderate 3 and Major 9, so one Major point outweighs several Minor ones. The bar adds up the weights on each side, and when neither side holds more than 65% of the total the balance reads Mixed.

It reads the document as published, with the same rules for every company, and it does not look at what the market expected or at how the stock traded, so a point can be objectively good on a day the stock falls.

Rhea-AI Sentiment measures something else, the tone of the wording.

0 major · 0 points

Hollow bars mark forward-looking points. How the balance works

Positive

  • Moderate point. Forward-looking: it has not happened yet and may not happen.Sunshine targets a return to production in late 2028.
  • Minor point. Forward-looking: it has not happened yet and may not happen.Index inclusion is expected to broaden visibility among institutional investors and funds using the benchmark.

Negative

  • None.

Key Figures

Index addition effective: November 2, 2026 Projected silver revenue share: More than 90%
Index addition effective
November 2, 2026
At market open
Projected silver revenue share
More than 90%
Expected revenue at planned production

Historical Context

1 past event · Latest: Sep 18
1 event
  1. Sep 18

    ETF inclusion

    24h Move
    +4.5%

    Sunshine's common stock was added to VanEck Junior Gold Miners ETF, another index-linked inclusion.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

free-float market capitalization, s-k 1300
2 terms
free-float market capitalization financial
"weighted by free-float market capitalization"
Market value of a company's shares calculated using only the shares available for public trading (the "free float") rather than all outstanding shares. It equals the current share price multiplied by the number of free‑float shares; shares typically excluded from the free float are those held by insiders, founders, strategic long‑term owners, governments or other locked‑in holders. The exact items excluded can vary by index provider or regulator, so free‑float market capitalization may differ from simple total market capitalization and is commonly used to represent the investable portion of a company for indexes and fund weighting.
s-k 1300 regulatory
"Company's S-K 1300 Technical Report Summary"
Regulation S-K Item 1300 is a U.S. securities disclosure rule that requires public companies to report how they manage cybersecurity risks and to promptly disclose material cyber incidents. Think of it as a requirement to tell investors both the company’s “cyber health” plan and any major break-ins, similar to a homeowner explaining their alarm system and alerting neighbors after a burglary. This helps investors assess operational risk and potential financial or reputational impact.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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KELLOGG, Idaho, Nov. 2, 2026 /PRNewswire/ -- Sunshine Silver Mining & Refining Company (NYSE:SSMR) (the "Company" or "Sunshine"), a mining company advancing the next chapter of American silver, today announced that its common stock will be added to the Solactive Global Silver Miners Index ("Silver Index") effective at market open on November 2, 2026.

SSMR Logo

The addition follows Sunshine's debut on the New York Stock Exchange on June 4, 2026, and places the Company in a global benchmark of leading businesses active in the silver sector.

"Sunshine's inclusion in the Solactive Global Silver Miners Index reflects the strong foundation we've built as a silver developer advancing toward production," said Heather White, CEO of Sunshine Silver Mining & Refining. "More than 90% of expected revenue at planned production is projected to come from silver, giving investors significant leverage to silver prices as we work toward our targeted return to production in late 2028."1

The Silver Index represents companies involved in silver mining and related activities, including silver exploration and refining. Under Solactive's methodology, the index generally includes 20 to 40 companies selected based on average daily trading volume and weighted by free-float market capitalization. Sunshine's inclusion is expected to broaden the Company's visibility among institutional investors and funds that use the index as a benchmark.

For more information on the Solactive Global Silver Miners Index, please visit: https://www.solactive.com/index/DE000A1DKEB9/.

About Sunshine Silver Mining & Refining Company

Sunshine Silver Mining & Refining Company is advancing toward silver production from the Sunshine Mine in Idaho's Silver Valley, the most prolific silver district in U.S. history. The Sunshine Mine is North America's highest-grade primary silver resource. It is characterized by exceptional size, extraordinary growth potential, existing infrastructure, and a history of proven production. Sunshine, the largest holder of mineral rights in the Silver Valley, also controls a consolidated land position with significant exploration potential and is evaluating additional value opportunities through silver/copper refining and antimony production. For more information, visit www.sunshinesilvermining.com.

Cautionary Statements

This press release contains forward-looking statements, including statements regarding the Company's planned return to production in late 2028 and the expected benefits of Sunshine's inclusion in the Solactive Global Silver Miners Index. In some cases, forward-looking statements can be identified by words such as "anticipate," "believe," "continue," "estimate," "expect," "intend," "may," "will," "could," "predict" and similar expressions or terminology. These statements are not historical facts but rather are based on the Company's current expectations and projections regarding its business, operations and other factors relating thereto and are subject to a number of known and unknown risks, uncertainties and other factors, including the risk factors set forth in our registration statement on Form S-1 filed with the Securities and Exchange Commission ("SEC") and other filings that we make from time to time with the SEC, that may cause the actual results, levels of activity, performance or achievements of the Company to be materially different from those expressed or implied by any forward-looking statements. Except to the extent required by law, the Company assumes no obligation to update any of these forward-looking statements or to conform these statements to actual results or revised expectations. We caution you not to place undue reliance on these forward-looking statements.

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1
Projected silver revenue is based on the life of mine silver production per the "Base Case" as defined in the Company's S-K 1300 Technical Report Summary on the Initial Assessment, Sunshine Mine, Idaho, USA, dated March 25, 2026 ("IA"). By-product revenues assume by-product production matches historical ratios implied by the last five full years of production (1996 - 2000) at the Sunshine Mine, silver price of $67.06/oz, copper price of $6.79/lb, and lead price of $0.86/lb (sourced from Capital IQ Pro), and average projected U.S. finished antimony price between 2029 - 2040 of $24.26/lb under the base case of the Argus Report (as prepared by Argus Media in December 2025 for the Company). By-product revenues adjusted for (i) a 7% NSR across all metals, (ii) assumed recovery rates of 97% for copper, lead and for antimony, and (iii) assumed payability rates of 96.5% for copper and 95% for lead, per Fastmarkets, and 70% for antimony based on comparable assets. 

Cision View original content to download multimedia:https://www.prnewswire.com/news-releases/sunshine-silver-mining--refining-announces-inclusion-in-solactive-global-silver-miners-index-302925882.html

SOURCE Sunshine Silver Mining & Refining

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

When does Sunshine Silver Mining & Refining join the Solactive Global Silver Miners Index?

Sunshine's common stock joins the Solactive Global Silver Miners Index effective at market open on November 2, 2026.

How does the Solactive Global Silver Miners Index select and weight companies such as SSMR?

The index generally includes 20 to 40 companies, selected based on average daily trading volume and weighted by free-float market capitalization, the value of shares available for public trading. It covers silver mining and related activities, including exploration and refining.

What assumptions support Sunshine Silver Mining & Refining's projected silver revenue share?

The projection uses base-case life-of-mine silver production from Sunshine's March 25, 2026 initial assessment. By-product production assumes historical ratios from 1996–2000. Price assumptions include silver at $67.06/oz, copper at $6.79/lb, lead at $0.86/lb and an average projected U.S. finished antimony price of $24.26/lb for 2029–2040. By-product revenue also incorporates royalty, recovery and payable-metal assumptions.

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