Live feed16:35:48·255dINSIDERFilingvia QuantisnowCFO Vollmer Jason L bought $81,375 worth of shares (5,000 units at $16.27), increasing direct ownership by 1% to 339,548 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.MDU· MDU Resources Group Inc.IndustrialsOriginal source