Live feed14:12:09·1702dINSIDERFilingvia QuantisnowSEC Form 4: Salle Blake P. returned $3,939,232 worth of Common Stock to the company (22,382 units at $176.00), closing all direct ownership in the companyByQuantisnow·Wall Street's wire, on your screen.PFPT· Proofpoint, Inc.TechnologyOriginal source