Mp Materials Corp. / De
A US miner that digs up and processes rare earth elements — the metals powering electric-vehicle motors, wind turbines, and smartphones — from Mountain Pass in California's Mojave Desert, the country's largest rare earth operation, and turns them into neodymium magnets in Texas. Founded in 2017 by hedge-fund manager James Litinsky, it bought the mine out of bankruptcy after former owner Molycorp collapsed in 2015. Fun fact: the mine was discovered in 1949 by a uranium prospector whose Geiger counter went off — for the rare earth mineral bastnäsite, not uranium.
Granted 328.0K · Sold 7.12M
Granted 176.5K · Bought 57.0K · Sold 150.0K
Granted 4.0K
Granted 103.3K · Sold 83.2K
Granted 165.0K · Sold 299.3K
Sold 317.8K
Granted 8.6K
Granted 19.5K
Granted 17.3K
Granted 4.0K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Litinsky James H.Chairman and CEO, Director · 51 transactions | — | 25.68M | 328.0K | — | 7.12M |
| Rosenthal Michael StuartChief Operating Officer · 18 transactions | -7.8% | 1.47M | 176.5K | 57.0K | 150.0K |
| Weisenburger Randall JDirector · 1 transaction | +29.1% | 150.9K | 4.0K | — | — |
| Hoops Elliot DeanGeneral Counsel and Secretary · 31 transactions | — | 126.8K | 103.3K | — | 83.2K |
| Corbett RyanChief Financial Officer · 25 transactions | -51.7% | 109.0K | 165.0K | — | 299.3K |
| McKnight Andrew A.Director · 2 transactions | -82.3% | 86.0Kas of May 2024 | — | — | 317.8K |
| Infuso David GregoryChief Accounting Officer · 8 transactions | — | 48.4K | 8.6K | — | — |
| Duckworth Connie KDirector · 13 transactions | +87.8% | 41.8K | 19.5K | — | — |
| Lavan MaryanneDirector · 11 transactions | +267.9% | 23.8K | 17.3K | — | — |
| Myers Richard BDirector · 1 transaction | — | 7.8K | 4.0K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -7.91M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.