Live feed17:44:39·1928dINSIDERFilingvia QuantisnowSEC Form 4: E. Mark Layton sold $290,984 worth of Common Stock (55,789 units at $5.22), decreasing direct ownership by 10% to 495,777 unitsByQuantisnow·Wall Street's wire, on your screen.TUSK· Mammoth Energy Services Inc.EnergyOriginal source