X0609 4 2026-06-10 0001350653 Alphatec Holdings, Inc. ATEC 0001188264 MCGINNIS KAREN K false C/O ALPHATEC SPINE, INC. 1950 CAMINO VIDA ROBLE CARLSBAD CA 92008 true false false false 1 Common Stock 2026-06-10 4 A 0 32012 0 A 100721 D Common Stock 2026-06-11 4 S 0 6050 8.01 D 94671 D On June 10, 2026, issuer granted to the reporting person 32,012 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of issuer's common stock. The restricted stock units vest on the earlier of (a) the next annual meeting of stockholders and (b) the death or resignation of the reporting person. In the event of death or resignation of the reporting person, the grant will vest pro-rata based on the number of actual days served by the reporting person from the time of the grant to such death or resignation, divided by 365. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025 to satisfy certain tax withholding obligations of the reporting person resulting from the vesting of restricted stock units. /s/ Tyson E. Marshall, Attorney-in-Fact 2026-06-12