Live feed16:04:04·1909dINSIDERFilingvia QuantisnowSEC Form 4: Gary Steele sold $644,316 worth of Common Stock (5,000 units at $128.86), decreasing direct ownership by 7% to 70,040 unitsByQuantisnow·Wall Street's wire, on your screen.PFPT· Proofpoint, Inc.TechnologyOriginal source