Live feed18:33:26·695dINSIDERFilingvia QuantisnowPiontek Gregg converted options into 135,351 shares and covered exercise/tax liability with 53,259 shares, increasing direct ownership by 12% to 791,530 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.NR· Newpark Resources Inc.IndustrialsOriginal source