Live feed19:40:06·56dINSIDERFilingvia QuantisnowAmendment: Executive VP of Operations Kiszka Robert covered exercise/tax liability with 6,194 shares, decreasing direct ownership by 1% to 544,782 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.SND· Smart Sand Inc.IndustrialsOriginal source