Live feed16:44:31·445dINSIDERFilingvia QuantisnowDirector Johnson Dennis W bought $499,200 worth of shares (30,000 units at $16.64), increasing direct ownership by 20% to 180,166 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.MDU· MDU Resources Group Inc.IndustrialsOriginal source