Live feed17:22:52·501dINSIDERFilingvia QuantisnowSENIOR EVP, PRODUCTION CENTER Zhou Rong sold $672,815 worth of shares (15,000 units at $44.85) and exercised 15,000 shares at a strike of $11.33 (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.AMPH· Amphastar Pharmaceuticals Inc.Health CareOriginal source