Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

MP Materials Corp. / DE

MP · NYSE · CIK 0001801368 · Basic Materials · Other Industrial Metals & Mining

INSIDER SIGNAL

No active buy signal

2 qualifying P purchase groups
in the current 180-day scoring window

27 Form 4 transaction lines observed in the same window
18 sales · 7 option, withholding, award, gift or other lines

Last qualifying purchase2026-06-09 · Rosenthal Michael Stuart · $543.0K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying2 qualifying line group(s)
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Litinsky James H.Chairman and CEO
▼▼▼▼▼▼
DUCKWORTH CONNIE KDirector
○○○
Rosenthal Michael StuartChief Operating Officer
●●
WEISENBURGER RANDALL JDirector
○
MYERS RICHARD BDirector
○
Lavan MaryanneDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 3 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Rosenthal Michael Stuart · $1.5M
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-20–2026-05-20

Roles in the peak window: Chief Operating Officer. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-06-09 · Rosenthal Michael Stuart.

Recent Form 4 activity

2Purchases
32Sales
38Other Form 4 lines
32SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING18 sale line(s) · context only
OTHER7 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
36,621,035
Previous report
33,572,608
Avg daily volume
5,419,746
Days to cover
6.8

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-09Rosenthal Michael StuartPurchase (P)Common Stock10,000USD 54.30USD 543,000SEC filing ↗
2026-05-20Rosenthal Michael StuartPurchase (P)Common Stock17,000USD 56.62USD 962,540SEC filing ↗
2024-08-06Rosenthal Michael StuartPurchase (P)Common Stock30,000USD 10.84USD 325,200SEC filing ↗
2023-05-31Rosenthal Michael StuartPurchase (P)Common Stock5,000USD 20.69USD 103,450SEC filing ↗
2023-05-30Rosenthal Michael StuartPurchase (P)Common Stock6,000USD 21.14USD 126,840SEC filing ↗
2023-05-26Rosenthal Michael StuartPurchase (P)Common Stock7,000USD 21.63USD 151,410SEC filing ↗
2023-05-25Rosenthal Michael StuartPurchase (P)Common Stock5,000USD 22.22USD 111,100SEC filing ↗
2023-05-23Rosenthal Michael StuartPurchase (P)Common Stock5,000USD 22.03USD 110,150SEC filing ↗
2023-05-22Rosenthal Michael StuartPurchase (P)Common Stock5,000USD 21.78USD 108,900SEC filing ↗
2023-05-19Rosenthal Michael StuartPurchase (P)Common Stock10,000USD 21.21USD 212,100SEC filing ↗
2022-06-16WEISENBURGER RANDALL JPurchase (P)Class A Common Stock30,000USD 33.25USD 997,500SEC filing ↗
2022-05-09DUCKWORTH CONNIE KPurchase (P)Class A Common Stock15,200USD 38.37USD 583,224SEC filing ↗
2022-03-11Hoops Elliot DeanPurchase (P)Class A Common Stock4,000USD 44.01USD 176,040SEC filing ↗
2022-03-07WEISENBURGER RANDALL JPurchase (P)Common Stock30,000USD 38.40USD 1,152,000SEC filing ↗
2021-12-15WEISENBURGER RANDALL JPurchase (P)Common Stock86,901USD 40.10USD 3,484,445SEC filing ↗

Form 4 evidence

72 transaction lines in the latest 365-day window; 668 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-13Infuso David GregoryTax withholding (F)Common Stock338USD 42.43USD 14,341SEC filing ↗
2026-09-30DUCKWORTH CONNIE KAward / grant (A)Common Stock740USD 0.00USD 0SEC filing ↗
2026-06-30DUCKWORTH CONNIE KAward / grant (A)Common Stock624USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-13Infuso David GregoryTax withholding (F)Common Stock338USD 42.43USD 14,341SEC filing ↗
2026-09-30DUCKWORTH CONNIE KAward / grant (A)Common Stock740USD 0.00USD 0SEC filing ↗
2026-06-30DUCKWORTH CONNIE KAward / grant (A)Common Stock624USD 0.00USD 0SEC filing ↗
2026-06-15WEISENBURGER RANDALL JOption exercise / conversion (M)Common Stock3,998USD —USD —SEC filing ↗
2026-06-15MYERS RICHARD BOption exercise / conversion (M)Common Stock3,998USD —USD —SEC filing ↗
2026-06-15Lavan MaryanneOption exercise / conversion (M)Common Stock3,998USD —USD —SEC filing ↗
2026-06-15DUCKWORTH CONNIE KOption exercise / conversion (M)Common Stock3,998USD —USD —SEC filing ↗
2026-06-09Rosenthal Michael StuartPurchase (P)Common Stock10,000USD 54.30USD 543,000SEC filing ↗
2026-06-03Litinsky James H.Sale (S)Common Stock185,167USD 69.14USD 12,801,855SEC filing ↗
2026-05-29Litinsky James H.Sale (S)Common Stock50,000USD 64.58USD 3,229,112SEC filing ↗
2026-05-28Litinsky James H.Sale (S)Common Stock234,651USD 65.87USD 15,455,481SEC filing ↗
2026-05-27Litinsky James H.Sale (S)Common Stock115,349USD 65.37USD 7,540,632SEC filing ↗
2026-05-20Rosenthal Michael StuartPurchase (P)Common Stock17,000USD 56.62USD 962,540SEC filing ↗
2026-05-13Litinsky James H.Sale (S)Common Stock177,188USD 65.13USD 11,540,521SEC filing ↗
2026-05-12Litinsky James H.Sale (S)Common Stock122,812USD 65.90USD 8,093,838SEC filing ↗
2026-05-08Hoops Elliot DeanSale (S)Common Stock6,958USD 75.00USD 521,850SEC filing ↗
2026-05-08Corbett RyanSale (S)Common Stock20,000USD 75.00USD 1,500,000SEC filing ↗
2026-04-20Litinsky James H.Sale (S)Common Stock259,179USD 64.03USD 16,595,231SEC filing ↗
2026-04-17Litinsky James H.Sale (S)Common Stock40,821USD 64.05USD 2,614,585SEC filing ↗
2026-04-01Infuso David GregoryTax withholding (F)Common Stock804USD 48.41USD 38,922SEC filing ↗
2026-03-17Corbett RyanSale (S)Common Stock46,000USD 60.00USD 2,760,000SEC filing ↗
2026-03-16Hoops Elliot DeanSale (S)Common Stock13,914USD 60.01USD 834,979SEC filing ↗
2026-01-22Infuso David GregoryTax withholding (F)Common Stock1,198USD 68.37USD 81,907SEC filing ↗
2026-01-20Hoops Elliot DeanSale (S)Common Stock7,823USD 68.21USD 533,607SEC filing ↗
2026-01-14Infuso David GregoryTax withholding (F)Common Stock444USD 69.30USD 30,769SEC filing ↗
2026-01-14Hoops Elliot DeanTax withholding (F)Common Stock1,300USD 69.30USD 90,090SEC filing ↗
2026-01-14Corbett RyanTax withholding (F)Common Stock3,511USD 69.30USD 243,312SEC filing ↗
2026-01-13Rosenthal Michael StuartTax withholding (F)Common Stock9,083USD 63.82USD 579,677SEC filing ↗
2026-01-13Infuso David GregoryTax withholding (F)Common Stock1,820USD 63.82USD 116,152SEC filing ↗
2026-01-13Hoops Elliot DeanTax withholding (F)Common Stock3,769USD 63.82USD 240,538SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerMP
CIK0001801368
SectorBasic Materials
IndustryOther Industrial Metals & Mining Yahoo Finance
SEC SIC1000 Metal Mining
ExchangeNYSE

Data coverage

Local Form 4 history668 transaction lines from 2020-11-17 to 2026-10-13
17 P purchase lines · 437 S sale lines · 214 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.