X0306 4 2018-06-22 0 0001097149 ALIGN TECHNOLOGY INC ALGN 0001233163 HOGAN JOSEPH M C/O ALIGN TECHNOLOGY, INC. 2560 ORCHARD PARKWAY SAN JOSE CA 95131 1 1 0 0 President and CEO Market Stock Unit 0.0001 2018-06-22 4 A 0 129300 0 A Common Stock 129300 129300 D Represents par value of ALGN common stock. Represents the maximum number of shares which may be issued under the market stock unit granted on June 22, 2018. All of the shares which may be issued under 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). Roger E George Atty-in-Fact for Joseph M. Hogan 2018-06-26