X0306 4 2019-05-31 0 0001097149 ALIGN TECHNOLOGY INC ALGN 0001689552 Morici John C/O ALIGN TECHNOLOGY INC. 2820 ORCHARD PARKWAY SAN JOSE CA 94131 0 1 0 0 Chief Financial Officer Common Stock 2019-05-31 4 S 0 2374 286.9118 D 2913 D The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $286.84 to $287.01, inclusive. The reporting person undertakes to provide Align Technology Inc., any security holder of Align Technology Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Roger E George Atty-in-Fact for John Morici 2019-06-03