Live feed12:10:38·352dINSIDERFilingvia QuantisnowDirector Welsh Mark A Iii sold $16,720 worth of shares (33 units at $506.67), decreasing direct ownership by 0.75% to 4,363 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.NOC· Northrop Grumman CorporationIndustrialsOriginal source