AMENTUM HOLDINGS INC

Ticker: AMTM CUSIP: 023939101 Class: COM

QUADRANT CAPITAL GROUP LLC's Holding History (CIK: 0001650717)

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

Q4 2025

Shares 13,054 Value ($000) $379 Avg Close $25.56 Range $21.11 - $31.87

Q3 2025

Shares 13,056 Value ($000) $313 Avg Close $24.35 Range $21.71 - $26.63

Q2 2025

Shares 13,058 Value ($000) $308 Avg Close $20.90 Range $16.01 - $24.33

Q1 2025

Shares 11,669 Value ($000) $212 Avg Close $20.37 Range $16.95 - $24.30

Q4 2024

Shares 124 Value ($000) $3 Avg Close $25.85 Range $18.38 - $34.47

Q3 2024

Shares 158 Value ($000) $5 Avg Close $28.49 Range $23.58 - $34.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13,054	$379	$25.56	$21.11 - $31.87
Q3 2025	13,056	$313	$24.35	$21.71 - $26.63
Q2 2025	13,058	$308	$20.90	$16.01 - $24.33
Q1 2025	11,669	$212	$20.37	$16.95 - $24.30
Q4 2024	124	$3	$25.85	$18.38 - $34.47
Q3 2024	158	$5	$28.49	$23.58 - $34.50