Live feed12:21:57·9mINSIDERFilingvia QuantisnowPresident & CEO George Mark R converted options into 2,653 shares and covered exercise/tax liability with 1,035 shares, increasing direct ownership by 8% to 22,783 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.NSC· Norfolk Southern CorporationIndustrialsOriginal source