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SSMR · Sunshine Silver Mining & Refining Co
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SSMR Sunshine Silver Mining & Refining (SSMR) Insider Trading, Ownership & Congress Trades

Mining & Metals · Gold and silver ores · CIK 0002091017
Quote by TradingView
Cluster · 5 insidersC-suite buying · 2
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
0
13F, latest reported quarter
Conversions, 180 days
2
Codes C/M, not in net · $15.7M priced

What the filings say about SSMR

Insiders, 180 days
-$6.7M net sold
5 buyers · 1 seller · 0% of sales under a 10b5-1 plan

Sunshine Silver Mining & Refining insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, Sunshine Silver Mining & Refining Co insiders sold a net $6.7M of stock across 7 Form 4 purchases and sales, with 5 insiders buying. Source: SEC Form 4 filings, as of 2026-10-28.

Insider
Filed
Shares
Value
Since filing
Ospraie Holding I, L.P.
SELL
2026-06-08 SECtraded 2026-06-05
555,555
$7.5M
-9.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 2.2% of the 24,758,995 shares held after it.
  • No other insider sold within 30 days.
Insider activity: Insider Ospraie Holding I, L.P. sold about $7.5M of SSMR on Jun 5, 2026, the largest insider sale at the company on our record.
SHEPSTON MICHELLE H
General Counsel
BUY
2026-06-08 SECtraded 2026-06-05
65
$878
-9.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 100.0% of the 65 shares held after it.
  • 4 other insiders bought within 30 days.
Insider activity: General Counsel SHEPSTON MICHELLE H bought about $878 of SSMR on Jun 5, 2026, the largest insider purchase at the company on our record; 4 other insiders bought within 30 days.
SHEPSTON MICHELLE H
General Counsel
BUY
2026-06-08 SECtraded 2026-06-05
5,000
$67.5K
-9.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 100.0% of the 5,000 shares held after it.
  • 4 other insiders bought within 30 days.
Insider activity: General Counsel SHEPSTON MICHELLE H bought about $67.5K of SSMR on Jun 5, 2026, the largest insider purchase at the company on our record; 4 other insiders bought within 30 days.
White Heather Eileen
Chief Executive Officer
BUY
2026-06-08 SECtraded 2026-06-05
2,000
$27.0K
-9.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 100.0% of the 2,000 shares held after it.
  • 4 other insiders bought within 30 days.
Insider activity: Chief Executive Officer White Heather Eileen bought about $27.0K of SSMR on Jun 5, 2026, the largest insider purchase at the company on our record; 4 other insiders bought within 30 days.
Radford Lawrence P
Director
BUY
2026-06-08 SECtraded 2026-06-05
2,500
$33.8K
-9.7%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 21.9% of the 11,429 shares held after it.
  • 4 other insiders bought within 30 days.
Insider activity: Director Radford Lawrence P bought about $33.8K of SSMR on Jun 5, 2026, the largest insider purchase at the company on our record; 4 other insiders bought within 30 days.
7 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
See all insider buying · insider selling
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Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net -$6.7M over 180 days
-$7.5M of it by a 10%+ holder
below 81% of Mining & Metals
Congress
no House purchase disclosed in the last 12 months
Funds
under five funds report holding it
Revenue
-100.0% year over year (latest quarter)
the lowest in Mining & Metals
Margin
no margin: no revenue reported
Buybacks
no share repurchases reported
Short interest
11.5% of the float short (float per yahoo 2026-10-27) · 10.6 days to cover · settled 2026-10-15
more than 52% of Mining & Metals
What changed in the last 30 days
Oct 28Insider buying stopped: no purchases in 90 days after 6 in the prior 90
Why it matters
The absence is the signal: 6 purchases in one 90-day window and none in the next is a change of behaviour, not a filing.

Watch SSMR

A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.

The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-23.7%12M
-32%-18%-4%+10%2026-062026-062026-072026-082026-092026-092026-10 2026-06-05 · Ospraie Holding I, L.P. sold $7.5M2026-06-05 · El-Erian Anna bought $540.0K2026-06-05 · Groh Douglas bought $135.0K2026-06-05 · SHEPSTON MICHELLE H bought $67.5K2026-06-05 · Radford Lawrence P bought $33.8K2026-06-05 · White Heather Eileen bought $27.0K2026-06-05 · SHEPSTON MICHELLE H bought $878
Insider buyInsider sell
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns SSMR: institutional holders (13F)

13F holdings, latest reported quarter
SEC 13F
No reported 13F holders

No fund above the reporting threshold listed this stock last quarter. That is a fact, not missing data.

Congress trades in SSMR

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

SSMR planned insider sales (Form 144)

No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
5 insiders reported buying shares.
The record shows a net $6.7M sold by insiders over 180 days. Each figure is a federal filing, dated the day it went public.
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Sector by SEC SIC code
MPTGNUENEMIEHYMCNWPXATIUUUUCRSLEUUSLM

SSMR financials

Revenue growth
-100.0%
XBRL, annual

SSMR Stock Sonar score 3/7 axes

Find similar shapesCompare

SSMR ranks highest on insider conviction (57th percentile) and risk and compliance (13th), and lowest on growth (1st), among Mining & Metals peers.

Growth
0
Inputs
  • Revenue growth, YoY-100.0% · 0 pct, sector of 81
  • Backlog growth, YoYno backlog line filed, or no year-earlier backlog
Insider conviction
57
Inputs
  • Net Form 4 buying (codes P and S), 180d-$6.7M · 16 pct, sector of 69
  • Insider buyers, 180d5 · 97 pct, sector of 70
Risk and compliance
13
Inputs
  • Short interest, % of float+11.5% · 13 pct, sector of 252
  • Recalls per $1B revenue, 3yrevenue under $50M or not filed, so a count cannot be scaled to size
  • EPA cases per $1B revenue, 5yrevenue under $50M or not filed, so a count cannot be scaled to size
  • New text in Risk Factors, latest 10-Kneeds two 10-Ks with a Risk Factors section (not 20-F filers or stubs)
4 not measured: Profitability, Financial health, Institutional and government, US patents
  • Profitability needs 2 of 4 inputs, 0 present: fewer than four consecutive quarters of net income; fewer than four consecutive quarters of operating income
  • Financial health needs 1 of 2 inputs, 0 present: no debt line filed
  • Institutional and government needs 1 of 4 inputs, 0 present: fewer than five funds report holding it; no Congress trades in 365 days; no federal contracts in 180 days; no lobbying filings in the last four quarters
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

3 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

SSMR filings, in plain words

Are Sunshine Silver Mining & Refining insiders buying or selling SSMR?

In the 180 days to 2026-10-28, Sunshine Silver Mining & Refining insiders were net sellers, a net $6.7M: $804.1K of purchases and $7.5M of sales reported on Form 4, by 5 buyers and 1 seller.

Read the full summary

In the 180 days to 2026-10-28, Sunshine Silver Mining & Refining insiders were net sellers of SSMR, a net $6.7M across purchases and sales reported on Form 4 by 5 buyers and 1 seller. Most of that figure, $7.5M, came from a holder of 10% or more rather than an officer or director. 5 insiders reported purchases in that window. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.

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