AMENTUM HOLDINGS INC

Ticker: AMTM CUSIP: 023939101 Class: COM

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2025

Shares 79,965 Value ($000) $2,319 Avg Close $25.56 Range $21.11 - $31.87

Q3 2025

Shares 50,649 Value ($000) $1,213 Avg Close $24.35 Range $21.71 - $26.63

Q2 2025

Shares 56,568 Value ($000) $1,336 Avg Close $20.90 Range $16.01 - $24.33

Q1 2025

Shares 54,200 Value ($000) $986 Avg Close $20.37 Range $16.95 - $24.30

Q4 2024

Shares 56,419 Value ($000) $1,186 Avg Close $25.85 Range $18.38 - $34.47

Q3 2024

Shares 29,437 Value ($000) $949 Avg Close $28.49 Range $23.58 - $34.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	79,965	$2,319	$25.56	$21.11 - $31.87
Q3 2025	50,649	$1,213	$24.35	$21.71 - $26.63
Q2 2025	56,568	$1,336	$20.90	$16.01 - $24.33
Q1 2025	54,200	$986	$20.37	$16.95 - $24.30
Q4 2024	56,419	$1,186	$25.85	$18.38 - $34.47
Q3 2024	29,437	$949	$28.49	$23.58 - $34.50