Company · Ownership research

MP Materials Corp. / DE MP

CIK 0001801368

Form 4 transactions dated Sep 1, 2023 to Sep 27, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 36 rows; the complete set is available through the API.

Insider filings on file run through 2026-06-30.

Insider purchases & sales

Purchased: $1.83M
Sold: $289.25M

Sep 1, 2023 – Jun 30, 2026
Available records · partial months are marked ·

202610 of 17 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-06-09	Rosenthal Michael Stuart Chief Operating Officer	Purchase	$543.00K 10,000 shares bought	7.90% added Trust holding	▾
2026-06-03	Litinsky James H. Chairman and CEO · Director	Sale	$12.80M 185,167 shares sold	1.57% sold Trust holding	▾
2026-05-29	Litinsky James H. Chairman and CEO · Director	Sale	$3.23M 50,000 shares sold	0.42% sold Trust holding	▾
2026-05-28	Litinsky James H. Chairman and CEO · Director	Sale	$15.46M 234,651 shares sold	1.94% sold Trust holding	▾
2026-05-27	Litinsky James H. Chairman and CEO · Director	Sale	$7.54M 115,349 shares sold	0.95% sold Trust holding	▾
2026-05-20	Rosenthal Michael Stuart Chief Operating Officer	Purchase	$962.54K 17,000 shares bought	1.29% added Direct holding	▾
2026-05-13	Litinsky James H. Chairman and CEO · Director	Sale	$11.54M 177,188 shares sold	1.43% sold Trust holding	▾
2026-05-12	Litinsky James H. Chairman and CEO · Director	Sale	$8.09M 122,812 shares sold	0.98% sold Trust holding	▾
2026-05-08	Hoops Elliot Dean General Counsel and Secretary	Sale10b5-1 footnote	$521.85K 6,958 shares sold	11.40% sold Direct holding	▾
2026-05-08	Corbett Ryan Chief Financial Officer	Sale10b5-1 footnote	$1.50M 20,000 shares sold	15.50% sold Direct holding	▾

Showing 17 / 17 record groups in 2026. The complete set is available through the API.

MP Materials Corp. / DE · MP

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 17 of 17 purchase / sale groups and 30 of 36 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"MP","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.