Live feed17:24:43·539dINSIDERFilingvia QuantisnowCFO, EVP & TREASURER Peters William J exercised 7,426 shares at a strike of $13.03 and sold $386,523 worth of shares (7,426 units at $52.05) (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.AMPH· Amphastar Pharmaceuticals Inc.Health CareOriginal source