28 insiders reported 64 Form 4 transactions for Sunshine Silver Mining & Refining Co (SSMR) over the past 18 months (most recent 2026-06-08). Recent activity: Ospraie Holding I, L.P. (10% Owner) Buy 2.6M shares, ESOF II GP Ltd. (Director) Buy 8,929 shares, Anderson Dwight (10% Owner) Buy 2.6M shares, Ospraie Management, Inc. (10% Owner) Buy 2.6M shares, Muniz Quintanilla Daniel (Director) Buy 8,929 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-08 | Ospraie Holding I, L.P. | 10% Owner | Buy | 2.6M | $7.5M |
| 2026-06-08 | ESOF II GP Ltd. | Director | Buy | 8,929 | $0 |
| 2026-06-08 | Anderson Dwight | 10% Owner | Buy | 2.6M | $7.5M |
| 2026-06-08 | Ospraie Management, Inc. | 10% Owner | Buy | 2.6M | $7.5M |
| 2026-06-08 | Muniz Quintanilla Daniel | Director | Buy | 8,929 | $0 |
| 2026-06-08 | Ospraie Real Assets Fund LP | 10% Owner | Buy | 2.6M | $7.5M |
| 2026-06-08 | Ospraie Real Assets GP LLC | 10% Owner | Buy | 2.6M | $7.5M |
| 2026-06-08 | Ospraie Management, LLC | 10% Owner | Buy | 2.6M | $7.5M |
| 2026-06-08 | Anderson Dwight | 10% Owner | Sell | 555,555 | $7.5M |
| 2026-06-08 | Ospraie Management, Inc. | 10% Owner | Sell | 555,555 | $7.5M |
| 2026-06-08 | Ospraie Holding I, L.P. | 10% Owner | Sell | 555,555 | $7.5M |
| 2026-06-08 | Ospraie Real Assets Fund LP | 10% Owner | Sell | 555,555 | $7.5M |
| 2026-06-08 | Ospraie Real Assets GP LLC | 10% Owner | Sell | 555,555 | $7.5M |
| 2026-06-08 | KAPLAN THOMAS SCOTT | Director | Buy | 8,929 | $0 |
| 2026-06-08 | ELECTRUM GLOBAL HOLDINGS L.P. | Director | Buy | 8,929 | $0 |
| 2026-06-08 | Electrum Group LLC | Director | Buy | 8,929 | $0 |
| 2026-06-08 | TEG Global GP Ltd. | Director | Buy | 8,929 | $0 |
| 2026-06-08 | Electrum Strategic Opportunities Fund II L.P. | Director | Buy | 8,929 | $0 |
| 2026-06-08 | Electrum Strategic Opportunities Fund II GP L.P. | Director | Buy | 8,929 | $0 |
| 2026-06-08 | ELECTRUM GLOBAL HOLDINGS L.P. | Director | Buy | 2.7M | $7.9M |
| 2026-06-08 | Electrum Silver US II LLC | Director | Buy | 8,929 | $0 |
| 2026-06-08 | Electrum Strategic Management LLC | Director | Buy | 8,929 | $0 |
| 2026-06-08 | Electrum Silver US LLC | Director | Buy | 8,929 | $0 |
| 2026-06-08 | KAPLAN THOMAS SCOTT | Director | Buy | 2.7M | $7.9M |
| 2026-06-08 | Ospraie Management, LLC | 10% Owner | Sell | 555,555 | $7.5M |
Source: SEC Form 4 filings · as of 2026-06-08