Live feed16:32:58·1138dSECFilingvia QuantisnowU.S. Silica Holdings Inc. filed SEC Form 8-K: Leadership Update, Submission of Matters to a Vote of Security Holders, Financial Statements and ExhibitsByQuantisnow·Wall Street's wire, on your screen.SLCA· U.S. Silica Holdings Inc.IndustrialsOriginal source