Live feed16:48:27·1351dINSIDERFilingvia QuantisnowSEC Form 4: Vizirgianakis Stavros G. bought $1,087,133 worth of shares (2,264,861 units at $0.48), increasing direct ownership by 63% to 5,850,716 unitsByQuantisnow·Wall Street's wire, on your screen.XTNT· Xtant Medical Holdings Inc.Health CareOriginal source