AMENTUM HOLDINGS INC

Ticker: AMTM CUSIP: 023939101 Class: COM

Vanguard Personalized Indexing Management, LLC's Holding History (CIK: 0001767306)

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

Q4 2025

Shares 17,751 Value ($000) $515 Avg Close $25.56 Range $21.11 - $31.87

Q3 2025

Shares 15,752 Value ($000) $384 Avg Close $24.35 Range $21.71 - $26.63

Q2 2025

Shares 14,605 Value ($000) $352 Avg Close $20.90 Range $16.01 - $24.33

Q4 2024

Shares 9,651 Value ($000) $203 Avg Close $25.85 Range $18.38 - $34.47

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	17,751	$515	$25.56	$21.11 - $31.87
Q3 2025	15,752	$384	$24.35	$21.71 - $26.63
Q2 2025	14,605	$352	$20.90	$16.01 - $24.33
Q4 2024	9,651	$203	$25.85	$18.38 - $34.47