Michael Stuart Rosenthal

CIK: 0001832050

Transaction Breakdown

Open Market Buys (P)2 (13.3%)

High conviction signal

Open Market Sales (S)3 (20.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (20.0%)

Compensation grants

Other (G, F, J, C, D, …)7 (46.7%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MP Materials Corp. / DE

Officer

Discretionary Trading P&L

Holdings

Transaction History (15 total)

MP
MP Materials Corp. / DE
Jun 9, 2026
Purchase(P)
Indirect
10K shares at avg. $54.30$543K
MP
MP Materials Corp. / DE
May 20, 2026
Purchase(P)
Direct
17K shares at avg. $56.62$963K
MP
MP Materials Corp. / DE
Jan 13, 2026
Tax Payment(F)
Direct
9.1K shares at avg. $63.82$580K
MP
MP Materials Corp. / DE
Jan 12, 2026
Award(A)
Direct
33.6K shares-
MP
MP Materials Corp. / DE
Jan 12, 2026
Tax Payment(F)
Direct
10.6K shares at avg. $65.34$694K
MP
MP Materials Corp. / DE
Jan 12, 2026
Award(A)
Direct
18.3K shares-
MP
MP Materials Corp. / DE
Aug 29, 2025
Sale(S)
Direct
14.1K shares at avg. $73.23$1.0M
MP
MP Materials Corp. / DE
Aug 29, 2025
Sale(S)
Direct
52.1K shares at avg. $72.56$3.8M
MP
MP Materials Corp. / DE
Aug 29, 2025
Sale(S)
Direct
83.9K shares at avg. $71.48$6.0M
MP
MP Materials Corp. / DE
Mar 16, 2025
Tax Payment(F)
Direct
384 shares at avg. $26.83$10K
MP
MP Materials Corp. / DE
Jan 13, 2025
Award(A)
Direct
47.4K shares-
MP
MP Materials Corp. / DE
Jan 13, 2025
Tax Payment(F)
Direct
2.6K shares at avg. $19.53$50K
MP
MP Materials Corp. / DE
Jan 12, 2025
Tax Payment(F)
Direct
10.6K shares at avg. $19.75$209K
MP
MP Materials Corp. / DE
Dec 10, 2024
Other(J)
Direct
169.1K shares-
MP
MP Materials Corp. / DE
Nov 17, 2024
Tax Payment(F)
Direct
171.5K shares at avg. $18.28$3.1M

		Type	Shares	Price		Ownership
Jun 9, 2026	MP MP Materials Corp. / DE	Purchase(P)	10,000	$54.30	$543,000	Indirect
May 20, 2026	MP MP Materials Corp. / DE	Purchase(P)	17,000	$56.62	$962,540	Direct
Jan 13, 2026	MP MP Materials Corp. / DE	Tax Payment(F)	9,083	$63.82	$579,677	Direct
Jan 12, 2026	MP MP Materials Corp. / DE	Award(A)	33,648	-	$0	Direct
Jan 12, 2026	MP MP Materials Corp. / DE	Tax Payment(F)	10,619	$65.34	$693,845	Direct
Jan 12, 2026	MP MP Materials Corp. / DE	Award(A)	18,318	-	$0	Direct
Aug 29, 2025	MP MP Materials Corp. / DE	Sale(S)	14,063	$73.23	$1,029,833	Direct
Aug 29, 2025	MP MP Materials Corp. / DE	Sale(S)	52,063	$72.56	$3,777,691	Direct
Aug 29, 2025	MP MP Materials Corp. / DE	Sale(S)	83,874	$71.48	$5,995,314	Direct
Mar 16, 2025	MP MP Materials Corp. / DE	Tax Payment(F)	384	$26.83	$10,303	Direct
Jan 13, 2025	MP MP Materials Corp. / DE	Award(A)	47,363	-	$0	Direct
Jan 13, 2025	MP MP Materials Corp. / DE	Tax Payment(F)	2,560	$19.53	$49,997	Direct
Jan 12, 2025	MP MP Materials Corp. / DE	Tax Payment(F)	10,601	$19.75	$209,370	Direct
Dec 10, 2024	MP MP Materials Corp. / DE	Other(J)	169,078	-	$0	Direct
Nov 17, 2024	MP MP Materials Corp. / DE	Tax Payment(F)	171,462	$18.28	$3,134,325	Direct

1-15 of 15 transactions

About Rosenthal Michael Stuart

Rosenthal Michael Stuart (SEC CIK 0001832050) files insider reports with the SEC as Chief Operating Officer of MP Materials Corp. / DE (MP).

Signal8 holds 8 ownership filings by Rosenthal Michael Stuart, all Form 4s, filed between Nov 18, 2024 and Jun 10, 2026. Those filings report 15 transactions, from Nov 17, 2024 to Jun 9, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Rosenthal Michael Stuart's filings is in LAS VEGAS, NV.

Recent filings by Rosenthal Michael Stuart

Jun 9, 2026: Open-market purchase of MP shares (Form 4, code P).
May 20, 2026: Open-market purchase of MP shares (Form 4, code P).
Jan 13, 2026: Tax withholding of MP shares (Form 4, code F).
Jan 12, 2026: Grant or award of MP shares (Form 4, code A).
Jan 12, 2026: Tax withholding of MP shares (Form 4, code F).

Other insiders filing for MP Materials Corp. / DE (MP)

Infuso David Gregory, Chief Accounting Officer
DUCKWORTH CONNIE K, Director
WEISENBURGER RANDALL J, Director
Lavan Maryanne, Director
MYERS RICHARD B, Director
McKnight Andrew A., Director

How to read Form 4 transaction codes