Live feed16:14:18·1946dINSIDERFilingvia QuantisnowSEC Form 4: Steve Rifai exercised 2,000 units of Common at a strike of $122.70 and sold $463,000 worth of Common (2,000 units at $231.50)ByQuantisnow·Wall Street's wire, on your screen.STMP· Stamps.com Inc.MiscellaneousOriginal source