Summary
Updated Aug 31, 2026
Michael Stuart Rosenthal is Chief Operating Officer of MP Materials Corp. / DE (MP). 6 SEC Form 4 filings on record going back to 2024, most recently on 10 June 2026. Most recent open-market trade: bought $543K of MP on 10 June 2026. Lifetime open-market purchases: $1.51M. Lifetime open-market sales: $10.80M.
Recent Transactions
11Every recent SEC Form 4 transaction Michael Stuart Rosenthal has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Michael Stuart Rosenthal go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $753K (2 buys totaling $1.51M). The largest single buy on record is $963K of MP in 2026. Sales side: 3 recorded sales totaling $10.80M, so the filing history runs sell-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Michael Stuart Rosenthal files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- James H. Litinsky - $117.97M of MP open-market activity in the last 12 months
- Ryan Corbett - $5.41M of MP open-market activity in the last 12 months
- Elliot Dean Hoops - $1.89M of MP open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Michael Stuart Rosenthal?
Michael Stuart Rosenthal is a corporate insider, tracked as Chief Operating Officer of MP Materials Corp. / DE (MP). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Michael Stuart Rosenthal submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Michael Stuart Rosenthal been buying or selling stock?
Recorded transactions: 2 open-market purchases ($1.51M) and 3 open-market sales ($10.80M) across all tracked filings.
Where can I see all of Michael Stuart Rosenthal's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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