Sunshine Silver Mining & Refining Company (SSMR)
NYSE: SSMR · Gold and Silver Ores · filing with the SEC since 2025
Who runs Sunshine Silver Mining & Refining Company
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
White Heather Eileen
Chief Executive Officer. First filing Jun 2026, latest Jun 8, 2026, 1 filing in all.
Officers reporting now
4
of 21 people with a filing in the last fifteen months
Directors reporting now
17
21 people on the record since 2026
Officerssales are open-market, Nov 12, 2025 to Nov 12, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Patterson Michael Aaron | Vice President IR & Corp. Dev. | Nov 2026 | Nov 12, 2026 | none |
| White Heather Eileen | Chief Executive Officer | Jun 2026 | Jun 8, 2026 | none |
| Shepston Michelle H | General Counsel | Jun 2026 | Jun 8, 2026 | none |
| Van Niekerk Pieter A. | Chief Financial Officer | Jun 2026 | Jun 3, 2026 | none |
Directorssales are open-market, Nov 12, 2025 to Nov 12, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Ebeling Nathan John | director | Jun 2026 | Jun 8, 2026 | none |
| El-Erian Anna | director | Jun 2026 | Jun 8, 2026 | none |
| Electrum Global Holdings L.P. | director | Jun 2026 | Jun 8, 2026 | none |
| Electrum Group LLC | director | Jun 2026 | Jun 8, 2026 | none |
| Electrum Silver Us II LLC | director | Jun 2026 | Jun 8, 2026 | none |
| Electrum Silver Us LLC | director | Jun 2026 | Jun 8, 2026 | none |
| Electrum Strategic Management LLC | director | Jun 2026 | Jun 8, 2026 | none |
| Electrum Strategic Opportunities Fund II Gp L.P. | director | Jun 2026 | Jun 8, 2026 | none |
| Electrum Strategic Opportunities Fund II L.P. | director | Jun 2026 | Jun 8, 2026 | none |
| Erfan Ali | director | Jun 2026 | Jun 8, 2026 | none |
| Esof II Gp Ltd. | director | Jun 2026 | Jun 8, 2026 | none |
| Groh Douglas | director | Jun 2026 | Jun 8, 2026 | none |
| Kaplan Thomas Scott | director | Jun 2026 | Jun 8, 2026 | none |
| Muniz Quintanilla Daniel | director | Jun 2026 | Jun 8, 2026 | none |
| Radford Lawrence P | director | Jun 2026 | Jun 8, 2026 | none |
| Teg Global Gp Ltd. | director | Jun 2026 | Jun 8, 2026 | none |
| Zink Paul H | director | Jun 2026 | Jun 8, 2026 | none |
Owners of more than 10% of a classsales are open-market, Nov 12, 2025 to Nov 12, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Anderson Dwight | 10% owner | Jun 2026 | Jun 8, 2026 | none |
| Grat Holdings LLC | 10% owner | Jun 2026 | Jun 8, 2026 | none |
| Manul Capital Management LLC | 10% owner | Jun 2026 | Jun 8, 2026 | none |
| Ospraie Holding I, L.P. | 10% owner | Jun 2026 | Jun 8, 2026 | 1 · $7.5M |
| Ospraie Management, Inc. | 10% owner | Jun 2026 | Jun 8, 2026 | none |
| Ospraie Management, LLC | 10% owner | Jun 2026 | Jun 8, 2026 | none |
| Ospraie Real Assets Fund LP | 10% owner | Jun 2026 | Jun 8, 2026 | none |
| Ospraie Real Assets Gp LLC | 10% owner | Jun 2026 | Jun 8, 2026 | none |
| Tigris Financial Group Ltd. | 10% owner | Jun 2026 | Jun 8, 2026 | none |
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.