Live feed13:50:42·1604dINSIDERFilingvia QuantisnowSEC Form 4: Vander Ploeg Mark A returned $158,865 worth of Dawson Geophysical Company-Common Stock $0.01 par value to the company (67,891 units at $2.34), closing all direct ownership in the companyByQuantisnow·Wall Street's wire, on your screen.DWSN· Dawson Geophysical CompanyEnergyOriginal source