AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

1620 INVESTMENT ADVISORS, INC.'s Holding History (CIK: 0001907281)

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

Q4 2025

Shares 718 Value ($000) $19 Avg Close $25.76 Range $22.94 - $29.00

Q3 2025

Shares 682 Value ($000) $18 Avg Close $25.82 Range $20.39 - $31.26

Q2 2025

Shares 682 Value ($000) $16 Avg Close $24.82 Range $22.64 - $29.27

Q1 2025

Shares 2,277 Value ($000) $66 Avg Close $31.94 Range $25.89 - $39.01

Q4 2024

Shares 2,288 Value ($000) $85 Avg Close $45.73 Range $36.48 - $53.96

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	718	$19	$25.76	$22.94 - $29.00
Q3 2025	682	$18	$25.82	$20.39 - $31.26
Q2 2025	682	$16	$24.82	$22.64 - $29.27
Q1 2025	2,277	$66	$31.94	$25.89 - $39.01
Q4 2024	2,288	$85	$45.73	$36.48 - $53.96