Alphatec Holdings, Inc.

Adoption, Modification or Termination of Trading Arrangements

A portion of the compensation of our directors and officers is in the form of equity awards, and, from time to time, directors and officers engage in open-market transactions with respect to the securities they acquire pursuant to such equity awards we have issued.

Transactions in our securities by directors and officers are required to be made in accordance with our insider trading policy, which requires that the transactions comply with applicable U.S. federal securities laws that prohibit trading while in possession of material nonpublic information. Rule 10b5-1 under the Exchange Act provides an affirmative defense that enables directors and officers to prearrange transactions in our securities in a manner that avoids concerns about initiating transactions while in possession of material nonpublic information.

The following table describes the contracts, instructions or written plans for the purchase or sale of securities adopted by our directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) during the three months ended September 30, 2026, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). No other Rule 10b5-1 trading arrangements or "non-Rule 10b5-1 trading arrangements" (as defined by S-K item 408(c)) were entered into orterminated by our directors or officers during such period: