Sunshine Silver Mining & Refining Company (SSMR)
NYSE: SSMR · Gold and Silver Ores · filing with the SEC since 2025
Who owns Sunshine Silver Mining & Refining Company
As filed with the SECHolders of 5% or more
2
Thomas Scott Kaplan holds 62.9% of Common Stock, par value $0.001 per share, as its SCHEDULE 13G filed Aug 7, 2026 says.
Directors and officers
21
report now, of 21 people on the record since 2026. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Thomas Scott Kaplan
SCHEDULE 13G · filed Aug 7, 2026 · Common Stock, par value $0.001 per share
Ospraie Real Assets Fund LP
SCHEDULE 13G · filed Aug 10, 2026 · Common Stock, par value $0.001 per share
What SSMR reports owning in othersstakes of 5% or more, and other ties
Sunshine Silver Mining & Refining Company reports no stake in another company in the record.
Insider tradesForm 4
0sales
6purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$800,000bought, in dollars
Open-market trades on Form 4 from Nov 12, 2025 to Nov 12, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 12, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window6 of 30 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Ospraie Holding I, L.P. | 10% owner | 1 | $7.5M | 0 | 0 | $0 |
| Shepston Michelle H | General Counsel | 0 | $0 | 0 | 2 | $100,000 |
| White Heather Eileen | Chief Executive Officer | 0 | $0 | 0 | 1 | $0 |
| El-Erian Anna | director | 0 | $0 | 0 | 1 | $500,000 |
| Groh Douglas | director | 0 | $0 | 0 | 1 | $100,000 |
| Radford Lawrence P | director | 0 | $0 | 0 | 1 | $0 |