Live feed17:39:25·234dINSIDERFilingvia QuantisnowCFO Vollmer Jason L bought $80,375 worth of shares (5,000 units at $16.07), increasing direct ownership by 1% to 344,548 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.MDU· MDU Resources Group Inc.IndustrialsOriginal source