Live feed19:17:05·1877dINSIDERFilingvia QuantisnowSEC Form 4: Lee Robert Darren sold $316,456 worth of Common Stock (2,317 units at $136.58), decreasing direct ownership by 50% to 2,317 unitsByQuantisnow·Wall Street's wire, on your screen.PFPT· Proofpoint, Inc.TechnologyOriginal source