Live feed16:13:20·258dINSIDERFilingvia QuantisnowPresident and CEO O'Shaughnessy Timothy J disposed of 2,800 units of Class B Common Stock, decreasing direct ownership by 9% to 26,741 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.GHC· Graham Holdings CompanyReal EstateOriginal source