Live feed19:17:32·194dINSIDERFilingvia QuantisnowEVP, SALES Sponsel David sold $438,794 worth of shares (21,106 units at $20.79), decreasing direct ownership by 5% to 439,767 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.ATEC· Alphatec Holdings Inc.Health CareOriginal source