Live feed17:30:47·302dINSIDERFilingvia QuantisnowDirector Petersen Floyd F. sold $11,734 worth of shares (500 units at $23.47), decreasing direct ownership by 0.64% to 77,531 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.AMPH· Amphastar Pharmaceuticals Inc.Health CareOriginal source