Live feed20:46:19·332dSECFilingvia QuantisnowAmphastar Pharmaceuticals Inc. filed SEC Form 8-K: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Submission of Matters to a Vote of Security Holders, Financial Statements and ExhibitsByQuantisnow·Wall Street's wire, on your screen.AMPH· Amphastar Pharmaceuticals Inc.Health CareOriginal source