Live feed16:29:50·1593dINSIDERFilingvia QuantisnowSEC Form 4: Costantino Kevin M covered exercise/tax liability with 73,711 shares and exercised 132,835 shares at a strike of $18.74, increasing direct ownership by 273% to 80,769 units to cover withholding taxByQuantisnow·Wall Street's wire, on your screen.GHL· Greenhill & Co. Inc.FinanceOriginal source