MP MATERIALS CORP

Ticker: MP CUSIP: 553368101 Class: EQTY

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 204,799 Value ($000) $10,346 Avg Close $63.41 Range $49.76 - $100.25

Q3 2025

Shares 169,855 Value ($000) $11,392 Avg Close $62.91 Range $29.58 - $82.50

Q2 2025

Shares 538,876 Value ($000) $17,928 Avg Close $25.52 Range $18.64 - $39.10

Q1 2025

Shares 579,349 Value ($000) $14,142 Avg Close $23.24 Range $15.77 - $27.29

Q4 2024

Shares 596,081 Value ($000) $9,299 Avg Close $18.54 Range $15.56 - $24.01

Q3 2024

Shares 715,771 Value ($000) $12,633 Avg Close $13.58 Range $10.02 - $18.49

Q2 2024

Shares 524,980 Value ($000) $6,683 Avg Close $15.70 Range $12.09 - $19.23

Q1 2024

Shares 398,491 Value ($000) $5,698 Avg Close $15.82 Range $12.68 - $20.03

Q4 2023

Shares 421,546 Value ($000) $8,368 Avg Close $17.06 Range $14.47 - $20.85

Q3 2023

Shares 1,026,482 Value ($000) $19,606 Avg Close $22.19 Range $18.39 - $26.53

Q2 2023

Shares 1,234,339 Value ($000) $28,242 Avg Close $22.92 Range $20.21 - $28.75

Q1 2023

Shares 846,951 Value ($000) $23,876 Avg Close $30.25 Range $23.66 - $36.67

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	204,799	$10,346	$63.41	$49.76 - $100.25
Q3 2025	169,855	$11,392	$62.91	$29.58 - $82.50
Q2 2025	538,876	$17,928	$25.52	$18.64 - $39.10
Q1 2025	579,349	$14,142	$23.24	$15.77 - $27.29
Q4 2024	596,081	$9,299	$18.54	$15.56 - $24.01
Q3 2024	715,771	$12,633	$13.58	$10.02 - $18.49
Q2 2024	524,980	$6,683	$15.70	$12.09 - $19.23
Q1 2024	398,491	$5,698	$15.82	$12.68 - $20.03
Q4 2023	421,546	$8,368	$17.06	$14.47 - $20.85
Q3 2023	1,026,482	$19,606	$22.19	$18.39 - $26.53
Q2 2023	1,234,339	$28,242	$22.92	$20.21 - $28.75
Q1 2023	846,951	$23,876	$30.25	$23.66 - $36.67