Insider · CIK 0001832050
Michael Stuart Rosenthal
Files at MP (MP Materials Corp. / DE). First filing Aug 29, 2025, latest Jun 10, 2026.
In brief
Michael Stuart Rosenthal files SEC Form 4 as COO at MP (MP Materials Corp. / DE). Since Aug 29, 2025, Michael Stuart Rosenthal has reported 2 open-market buys worth $1.5M and 1 open-market sell worth $11M, the latest filed on Jun 10, 2026.
A track record needs three past buys with six months of prices behind them; Michael Stuart Rosenthal has 0, so none is measured yet.
The newest scored trade: bought $543k of MP on Jun 9, 2026, filed Jun 10, 2026, scored 55 (moderate). In the last 12 months: 2 buys worth $1.5M and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MP: MP Materials Corp. / DE
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 55Moderate | MPbuy MP Materials Corp. / DE | $543k 10,000 shares | +8% | +112% from low-45% from high | |
| 52Moderate | MPbuy MP Materials Corp. / DE | $963k 17,000 shares | +1% | +201% from low-43% from high | |
| 50Moderate | MPsell MP Materials Corp. / DE | $11M 150,000 shares | -10% | +416% from low-7% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 29, 2025 | MP MP Materials Corp. / DE | 150,000 0.08% of outstanding | $11M | Aug 29, 2025 | none |
Transactions
Every row this insider has filed, 11 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 9, 2026 | MP MP Materials Corp. / DE | POpen-market purchase Common Stockindirect: By Rosenthal Family Trust | +10,000 | $54.30 | $543k | 136,622 | Jun 10, 2026 |
| May 20, 2026 | MP MP Materials Corp. / DE | POpen-market purchase Common Stock | +17,000 | $56.62 | $963k | 1,333,673 | May 20, 2026 |
| Jan 12, 2026 | MP MP Materials Corp. / DE | AGrant or award Common Stock | +18,318 | $0.00 | $0 | 1,302,727 | Jan 14, 2026 |
| Jan 12, 2026 | MP MP Materials Corp. / DE | AGrant or award Common Stock | +33,648 | $0.00 | $0 | 1,336,375 | Jan 14, 2026 |
| Jan 12, 2026 | MP MP Materials Corp. / DE | FTax withholding Common Stock | -10,619 | $65.34 | $694k | 1,325,756 | Jan 14, 2026 |
| Jan 13, 2026 | MP MP Materials Corp. / DE | FTax withholding Common Stock | -9,083 | $63.82 | $580k | 1,316,673 | Jan 14, 2026 |
| Aug 29, 2025 | MP MP Materials Corp. / DE | SOpen-market sale Common Stock | -83,874 | $71.48 | $6.0M | 1,350,535 | Aug 29, 2025 |
| Aug 29, 2025 | MP MP Materials Corp. / DE | SOpen-market sale Common Stock | -52,063 | $72.56 | $3.8M | 1,298,472 | Aug 29, 2025 |
| Aug 29, 2025 | MP MP Materials Corp. / DE | SOpen-market sale Common Stock | -14,063 | $73.23 | $1.0M | 1,284,409 | Aug 29, 2025 |
| Dec 10, 2024 | MP MP Materials Corp. / DE | JOther Common Stock | +169,078 | $0.00 | $0 | 1,400,591 | Dec 11, 2024 |
| Nov 17, 2024 | MP MP Materials Corp. / DE | FTax withholding Common Stock | -171,462 | $18.28 | $3.1M | 1,231,513 | Nov 18, 2024 |
Questions about Michael Stuart Rosenthal
Answered from the filings on this page, as of the latest one.
Is Michael Stuart Rosenthal buying or selling?
In the last 12 months Michael Stuart Rosenthal reported 2 open-market buys worth $1.5M and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $543k of MP on Jun 9, 2026. Grants, option exercises and tax withholding are not counted.
How did Michael Stuart Rosenthal's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Michael Stuart Rosenthal has 0.
Where does Michael Stuart Rosenthal file Form 4?
Michael Stuart Rosenthal has filed Form 4 at MP (MP Materials Corp. / DE) as Chief Operating Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.