AMENTUM HOLDINGS INC

Ticker: AMTM CUSIP: 023939101 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q4 2025

Shares 1,832,926 Value ($000) $53,157 Avg Close $25.56 Range $21.11 - $31.87

Q3 2025

Shares 1,306,051 Value ($000) $31,273 Avg Close $24.35 Range $21.71 - $26.63

Q2 2025

Shares 1,334,752 Value ($000) $31,512 Avg Close $20.90 Range $16.01 - $24.33

Q1 2025

Shares 1,113,654 Value ($000) $20,267 Avg Close $20.37 Range $16.95 - $24.30

Q4 2024

Shares 1,154,130 Value ($000) $24,284 Avg Close $25.85 Range $18.38 - $34.47

Q3 2024

Shares 1,259,348 Value ($000) $40,550 Avg Close $28.49 Range $23.58 - $34.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,832,926	$53,157	$25.56	$21.11 - $31.87
Q3 2025	1,306,051	$31,273	$24.35	$21.71 - $26.63
Q2 2025	1,334,752	$31,512	$20.90	$16.01 - $24.33
Q1 2025	1,113,654	$20,267	$20.37	$16.95 - $24.30
Q4 2024	1,154,130	$24,284	$25.85	$18.38 - $34.47
Q3 2024	1,259,348	$40,550	$28.49	$23.58 - $34.50