X0306 4 2020-04-06 0 0001350653 Alphatec Holdings, Inc. ATEC 0001289409 Miles Patrick C/O ALPHATEC SPINE, INC. 5818 EL CAMINO REAL CARLSBAD CA 92008 1 1 0 0 CEO Common Stock 2020-04-06 4 A 0 28268 3.93 A 4179189 D Common Stock 10900 I By IRA Common Stock 250000 I By MOM, LLC On April 6, 2020, the restricted stock units (RSUs) were granted to the reporting person in connection with the reporting person's election to participate in the issuer's employee salary conversion plan, which was adopted by the Compensation Committee of the issuer's board of directors on April 1, 2020 in response to the novel coronavirus (COVID-19) and the financial impact on the issuer resulting therefrom. Under the terms of the plan, the reporting person is being granted RSUs in lieu of a percentage of the reporting person's cash compensation for the period between April 6, 2020 and July 10, 2020. Each RSU represents a contingent right to receive one share of the issuer's common stock. The RSUs vest in full on July 10, 2020. The conversion price (cash for equity) is based on a 30-day volume weighted average price of the issuer's common stock as of close of market on Friday, April 3, 2020. /s/ Patrick Miles 2020-04-08