AMENTUM HOLDINGS INC

Ticker: AMTM CUSIP: 023939101 Class: COM

Ruane, Cunniff & Goldfarb L.P.'s Holding History (CIK: 0001720792)

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

Q4 2025

Shares 2,394,129 Value ($000) $69,430 Avg Close $25.56 Range $21.11 - $31.87

Q3 2025

Shares 2,423,748 Value ($000) $58,049 Avg Close $24.35 Range $21.71 - $26.63

Q2 2025

Shares 2,441,743 Value ($000) $57,650 Avg Close $20.90 Range $16.01 - $24.33

Q1 2025

Shares 2,393,039 Value ($000) $43,553 Avg Close $20.37 Range $16.95 - $24.30

Q4 2024

Shares 2,436,294 Value ($000) $51,235 Avg Close $25.85 Range $18.38 - $34.47

Q3 2024

Shares 2,530,489 Value ($000) $81,608 Avg Close $28.49 Range $23.58 - $34.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,394,129	$69,430	$25.56	$21.11 - $31.87
Q3 2025	2,423,748	$58,049	$24.35	$21.71 - $26.63
Q2 2025	2,441,743	$57,650	$20.90	$16.01 - $24.33
Q1 2025	2,393,039	$43,553	$20.37	$16.95 - $24.30
Q4 2024	2,436,294	$51,235	$25.85	$18.38 - $34.47
Q3 2024	2,530,489	$81,608	$28.49	$23.58 - $34.50