Live feed16:37:06·587dINSIDERFilingvia QuantisnowDirector Weymouth Katharine sold $358,820 worth of Class B Common Stock (378 units at $949.26), decreasing direct ownership by 19% to 1,615 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.GHC· Graham Holdings CompanyReal EstateOriginal source