Pre-market
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Price with disclosed trades

Daily closes, past year · marks sit on transaction dates, sized by value

31 trades

Disclosure transactions for Amphastar Pharmaceuticals
Reporting person Filed Transaction Transaction value Source Actions
Prins Richard K Director Jun 3, 2026 653-day lag Gift Aug 19, 2024 $0 Filed shares x price SEC Form 4 View filing
Prins Richard K Director
Gift
Calculated transaction value
$0 1,500 shares @ $0
Traded
Aug 19, 2024
Filed
Jun 3, 2026