Live feed17:24:21·692dINSIDERFilingvia QuantisnowDirector Duren Diane K returned $1,596,918 worth of shares to the company (103,027 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