Live feed19:00:05·45dINSIDERFilingvia QuantisnowDirector Valentine Keith bought $996,192 worth of shares (135,000 units at $7.38), increasing direct ownership by 139% to 232,271 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.ATEC· Alphatec Holdings Inc.Health CareOriginal source