AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

Boston Partners's Holding History (CIK: 0001386060)

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

Q1 2025

Shares 423,070 Value ($000) $11,943 Avg Close $31.94 Range $25.89 - $39.01

Q4 2024

Shares 426,636 Value ($000) $15,778 Avg Close $45.73 Range $36.48 - $53.96

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2025	423,070	$11,943	$31.94	$25.89 - $39.01
Q4 2024	426,636	$15,778	$45.73	$36.48 - $53.96