Hockridge Stuart A 4

4 · ALIGN TECHNOLOGY INC · Filed Feb 24, 2026

Form 4

Period: 2026-02-20

EVP, GLOBAL HR

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-02-20+4,310→ 16,102 total
Tax Payment
Common Stock
2026-02-20$190.02/sh−1,210$229,924→ 14,892 total
Exercise/Conversion
Restricted Stock Unit
[F2][F3]
2026-02-20−419→ 836 total
Exercise: $0.00→ Common Stock (419 underlying)
Exercise/Conversion
Restricted Stock Unit
[F2][F4]
2026-02-20−531→ 1,590 total
Exercise: $0.00→ Common Stock (531 underlying)
Exercise/Conversion
Restricted Stock Unit
[F2][F5]
2026-02-20−227→ 0 total
Exercise: $0.00→ Common Stock (227 underlying)
Exercise/Conversion
Market Stock Unit
[F2][F6]
2026-02-20−2,714→ 0 total
Exercise: $0.00→ Common Stock (2,714 underlying)
Exercise/Conversion
Restricted Stock Unit
[F2][F7]
2026-02-20−419→ 418 total
Exercise: $0.00→ Common Stock (419 underlying)

Footnotes (7)

[F1]Includes 125 shares acquired on January 30, 2026 and 109 shares acquired on January 31, 2025 under the ALGN Employee Stock Purchase Plan.
[F2]Represents par value of ALGN common stock.
[F3]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.
[F4]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.
[F5]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.
[F6]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.
[F7]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.

Signature

/s/ Julie Ann Coletti, Attorney-in-Fact for Stuart Hockridge|2026-02-24

Documents

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