X0306 4 2018-02-13 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 Common Stock 2018-02-13 2018-02-13 4 P 0 1500 233.6299 A 1500 I By resident of household Common Stock 42984 D The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. Roger E. George Atty-in-Fact for Joseph M Hogan 2018-02-15