Live feed17:08:41·140dINSIDERFilingvia QuantisnowPresident & CEO George Mark R converted options into 3,691 shares and covered exercise/tax liability with 1,444 shares, increasing direct ownership by 12% to 21,165 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.NSC· Norfolk Southern CorporationIndustrialsOriginal source