X0306 4 2023-02-20 0 0001097149 ALIGN TECHNOLOGY INC ALGN 0001777603 Coletti Julie Ann C/O ALIGN TECHNOLOGY INC. 410 NO. SCOTTSDALE RD., SUITE 1300 TEMPE AZ 85281 0 1 0 0 EVP, Chief Legal & Regulatory Common Stock 2023-02-20 4 M 0 2600 0.00 A 3731 D Common Stock 2023-02-20 4 F 0 1153 316.71 D 2578 D Restricted Stock Unit 0.0001 2023-02-20 4 M 0 292 0.00 D Common Stock 292 875 D Restrictd Stock Unit 0.0001 2023-02-20 4 M 0 223 0.00 D Common Stock 223 445 D Restricted Stock Unit 0.0001 2023-02-20 4 M 0 453 0.00 D Common Stock 453 452 D Restricted Stock Unit 0.0001 2023-02-20 4 M 0 251 0.00 D Common Stock 251 0 D Market Stock Unit 0.0001 2023-02-20 4 M 0 1381 0.00 D Common Stock 1381 0 D Restricted Stock Unit 0.0001 2023-02-20 4 A 0 2154 0.00 A Common Stock 2154 2154 D Market Stock Unit 0.0001 2023-02-20 4 A 0 4374 0.00 A Common Stock 4374 4374 D Includes an aggregate of 165 shares acquired under the ALGN ESPP as follows: 106 shares acquired on July 30, 2021, 25 shares acquired on July 31, 2022 and 34 shares acquired on January 31, 2023. Represents par value of ALGN common stock. 1/4th of the restricted stock unit granted on February 20, 2022 became vested on February 20, 2023 and shares were delivered to reporting person on such vest date. 1/4th of the restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each vest date. 1/4th of the restricted stock unit granted on February 20, 2021 became vested on February 20, 2023 and shares were delivered to reporting person on such vest date. 1/4th of the restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each vest date. 1/4th of the restricted stock unit granted on February 20, 2020 became vested on February 20, 2023 and shares were delivered to reporting person on such vest date. 1/4th of the restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each vest date. 1/4th of the restricted stock unit granted on February 20, 2019 became vested on February 20, 2023 and shares were delivered to reporting person on such vest date. The market stock unit granted February 20, 2020 became fully vested on February 20, 2023, and shares were delivered to reporting person on such vest date. 1/4th of the restricted stock unit granted on February 20, 2023 will become vested on February 20, 2024 and shares will be delivered to reporting person on such vest date. 1/4th of the restricted stock unit will vest annually thereafter and shares will be delivered to reporting person on each vest date. Represents the maximum number of shares which may be issued under the market stock unit. 100% of the market stock unit will vest on the last day of the third year of the Performance Period (as defined in the market stock unit agreement). /s/ Julie A. Coletti 2023-02-23