Live feed17:15:06·638dINSIDERFilingvia QuantisnowDirector Bates Simon returned $280,906 worth of shares to the company (18,123 units at $15.50), closing all direct ownership in the company (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.SLCA· U.S. Silica Holdings Inc.IndustrialsOriginal source