This U.S. spinal surgery innovator reported insider selling amid a year of strong share price gains and ongoing direct-to-surgeon growth.Scott Lish, Chief Operating Officer of Alphatec Holdings (ATEC +0.94%), executed an open-market sale of 19,900 shares for a transaction value of approximately $390,836 on Dec. 16, 2025, as reported in the SEC Form 4 filing.Transaction summaryMetricValueShares sold (direct)19,900Transaction value~$390,836.00Post-transaction shares (direct)641,432Post-transaction value (dire ...