X0508 4 2026-02-20 0001097149 ALIGN TECHNOLOGY INC ALGN 0001689552 Morici John C/O ALIGN TECHNOLOGY, INC. 410 N. SCOTTSDALE ROAD, SUITE 1300 TEMPE AZ 85288 false true false false EVP, CHIEF FINANCIAL OFFICER false Common Stock 2026-02-20 4 M false 7848 0 A 16085 D Common Stock 2026-02-20 4 F false 2549 190.02 D 13536 D Restricted Stock Unit 0.0001 2026-02-20 4 A false 8423 0 A Common Stock 8423 8423 D Market Stock Unit 0.0001 2026-02-20 4 A false 17102 0 A Common Stock 17102 17102 D Restricted Stock Unit 0.0001 2026-02-20 4 M false 837 0 D Common Stock 837 1674 D Restricted Stock Unit 0.0001 2026-02-20 4 M false 1251 0 D Common Stock 1251 3750 D Restricted Stock Unit 0.0001 2026-02-20 4 M false 389 0 D Common Stock 389 0 D Market Stock Unit 0.0001 2026-02-20 4 M false 4653 0 D Common Stock 4653 0 D Restricted Stock Unit 0.0001 2026-02-20 4 M false 718 0 D Common Stock 718 718 D Represents par value of ALGN common stock. 1/4th of the restricted stock unit granted on February 20, 2026 will become vested on February 20, 2027 and shares will be delivered to reporting person on such date. 1/4th of restricted stock unit will vest annually thereafter and shares will be delivered to reporting person on such vest date. Represents the number of shares which may be issued at target under the market stock unit. If performance exceeds target, the maximum number of shares that may vest is 250% of the at target amount. Vesting, if any, of the market stock unit occurs on the last day of the third year of the Performance Period (as defined in the market stock unit agreement). 1/4th of the restricted stock unit granted on February 20, 2024 became vested on February 20, 2026 and shares were delivered to reporting person on such grant date. 1/4th of the restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each such vest date. 1/4th of the restricted stock unit granted on February 20, 2025 became vested on February 20, 2026 and shares were delivered to reporting person on such grant date. 1/4th of the restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each such vest date. 1/4th of the restricted stock unit granted on February 20, 2022 became vested on February 20, 2026 and shares were delivered to reporting person on such grant date. The market stock unit granted on February 20, 2023 became vested on February 20,2026 and shares were delivered to reporting person on such vest date. 1/4th of the restricted stock unit granted on February 20, 2023 became vested on February 20, 2026 and shares were delivered to reporting person on such grant date. 1/4th of the restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each such vest date. /s/ Julie Ann Coletti, Attorney-in-Fact for John Morici 2026-02-24