Sunshine Silver Mining & Refining Company
Last updated September 27, 2026
Organization details
- Legal name
- Sunshine Silver Mining & Refining Company
- Ownership
- Public
- Status
- Active
- SIC code
- 1040 — Gold and Silver Ores
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- Kellogg
- Headquarters state / province
- Idaho
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- SSMR
- Primary stock exchange
- NYSE
Identifiers
- SEC CIK
- 0002091017
- EIN
- 85-3794822
Board of directors
-
Ali Erfan · DirectorSince 2026
-
Anna El-Erian · DirectorSince 2026
-
Douglas Groh · DirectorSince 2026
-
Heather Eileen White · Director · Chief Executive OfficerSince 2026
-
Lawrence P. Radford · DirectorSince 2026
-
Nathan John Ebeling · DirectorSince 2026
-
Paul H. Zink · DirectorSince 2026
-
Quintanilla Daniel Muniz · DirectorSince 2026
-
Thomas Scott Kaplan · DirectorSince 2026
Chief executives
Heather Eileen White
· Chief Executive Officer
Since June 2026
Board connections
5 of this board's directors also sit on 2 other boards.
- via Ali Erfan, Anna El-Erian, Douglas Groh and Quintanilla Daniel Muniz
- via Ali Erfan, Quintanilla Daniel Muniz and Thomas Scott Kaplan
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $804,128
- 6 purchases by 5 insiders
- Sold, last 12 months
- $7,499,993
- 1 sale by 1 insider
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 5, 2026 | Ospraie Holding I, L.P. 10% owner | In-the-money exercise | +2,615,060 | $2.87 | $7,505,222 |
| Jun 5, 2026 | SHEPSTON MICHELLE H Officer (General Counsel) | Open-market purchase | +5,000 | $13.50 | $67,500 |
| Jun 5, 2026 | Heather Eileen White Director, Officer (Chief Executive Officer) | Open-market purchase | +2,000 | $13.50 | $27,000 |
| Jun 5, 2026 | Nathan John Ebeling Director | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Paul H. Zink Director | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Lawrence P. Radford Director | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Quintanilla Daniel Muniz Director | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Douglas Groh Director | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Ali Erfan Director | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Anna El-Erian Director | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Manul Capital Management LLC 10% owner | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Electrum Strategic Management LLC Director, 10% owner | Grant or award | +8,929 | — | — |
| Jun 5, 2026 | Ospraie Holding I, L.P. 10% owner | Open-market sale | −555,555 | $13.50 | $7,499,993 |
| Jun 5, 2026 | SHEPSTON MICHELLE H Officer (General Counsel) | Open-market purchase | +65 | $13.50 | $878 |
| Jun 5, 2026 | Lawrence P. Radford Director | Open-market purchase | +2,500 | $13.50 | $33,750 |
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