Live feed17:02:46·343dINSIDERFilingvia QuantisnowCFO, EVP & TREASURER Peters William J covered exercise/tax liability with 273 shares, decreasing direct ownership by 0.22% to 124,985 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.AMPH· Amphastar Pharmaceuticals Inc.Health CareOriginal source