AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

CONTRAVISORY INVESTMENT MANAGEMENT, INC.'s Holding History (CIK: 0001365707)

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

Q1 2024

Shares 238 Value ($000) $10 Avg Close $51.65 Range $42.16 - $65.92

Q4 2023

Shares 238 Value ($000) $15 Avg Close $52.53 Range $43.79 - $63.67

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2024	238	$10	$51.65	$42.16 - $65.92
Q4 2023	238	$15	$52.53	$43.79 - $63.67