Live feed16:23:04·141dINSIDERFilingvia QuantisnowBd. Co-Chair, President & CEO Schleifer Leonard S covered exercise/tax liability with 155,145 shares and exercised 172,723 shares at a strike of $555.67, increasing direct ownership by 9% to 214,523 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.REGN· Regeneron Pharmaceuticals Inc.Health CareOriginal source