Live feed17:29:01·416dINSIDERFilingvia QuantisnowCFO, EVP & TREASURER Peters William J covered exercise/tax liability with 2,141 shares, decreasing direct ownership by 2% to 93,483 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.AMPH· Amphastar Pharmaceuticals Inc.Health CareOriginal source