AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

Horizon Investment Services, LLC's Holding History (CIK: 0001426940)

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

Q2 2023

Shares 4,808 Value ($000) $276 Avg Close $44.33 Range $35.62 - $58.70

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2023	4,808	$276	$44.33	$35.62 - $58.70