50 transactions on file (1 open-market purchase and 7 open-market sales).
7 open-market sales by MUX insiders, between Sep 19, 2025 and Jun 29, 2026.
Discretionary. The box was on the form and was not ticked.
Planned (10b5-1). The filer ticked the Form 4's 10b5-1 box.
Not stated. The filing does not say.
The 1 open-market purchase on file carry no plan label.
| Date | Insider | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-07-27 | McEwen Robert Ross Chairman and CEO · Director · 10% owner Grant / award | Grant / award | +1,526,785 | - | - | 1,526,785 |
| 2026-06-29 | Brissenden Richard W. Director Option exercise | Option exercise | +8,333 | $7.10 | +59.16K | 21,297 |
| 2026-06-29 | Brissenden Richard W. Director Open-market saleDiscretionary | Open-market sale Discretionary | −3,275 | $18.13 | −59.37K | 18,022 |
| 2026-06-29 | Ball Ian J Director Option exercise | Option exercise | +160 | - | - | 320 |
| 2026-06-29 | Shaver William M Chief Operating Officer · Director Option exercise | Option exercise | +11,740 | - | - | 163,906 |
45 more transactions are on Measure
| Insider | Role | On Sep 12, 2025 | Now | Change | Sold | Shape |
|---|---|---|---|---|---|---|
| Chan JeffreyVP - Finance | VP - Finance | 15,600 | 2,267 | −85.47% | $198.53K$198.53K no plan | |
| Spears Stephan MichaelVP Corporate Development | VP Corporate Development | 16,414 | 3,814 | −76.76% | $180.78K$180.78K no plan | |
| McEwen Robert RossChairman and CEO, Director, 10% owner | Chairman and CEO, Director, 10% owner | 500,000 | 450,000 | −10.00% | $717.34K$717.34K no plan |
3 more insiders, included withMeasure
What each insider held after every open-market trade, over the last twelve months.
The assistant answers from what MUX has actually filed: 14 annual reports filed with the SEC, 50 Form 4 filings from the last year and 1 fund that holds it. Every figure in a reply links to the filing it came from, so an answer can be checked rather than believed.
Pressing one answers it here, from MUX's filings and figures. One a day without an account; a free account has its own, and no card.
See every Form 4 MUX insiders have filed, not the latest few.
Ten seconds, no card, and nothing to cancel.
Source
From SEC Form 4 filings, filed within two business days of a transaction.
Past transactions say nothing about future ones, and none of this is investment advice.
See who bought, not who was handed shares
Every Form 4 MUX insiders file, not just the latest handful, with vesting and tax withholding struck out so what's left reads as a decision.
Every filingMeasure
Follow the investors who hold it
Each stake priced at the quarter it was filed, and diffed against the quarter before: who added, who trimmed, who left.
Every position they holdMeasure
Ask what a run of filings adds up to
Whether this is one decision or a pattern, and how it compares with MUX's own history of insider activity.
Free, no card, and it does not expire.