X0306 4 2016-02-04 0 0001097149 ALIGN TECHNOLOGY INC ALGN 0001188901 SANTORA GREG J C/O ALIGN TECHNOLOGY, INC. 2560 ORCHARD PARKWAY SAN JOSE CA 95131 1 0 0 0 Common Stock 2016-02-04 2016-02-04 4 S 0 9000 67.277 D 26900 I By Trust The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.78 to $67.91, 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. Since the reporting person's last report, shares previously show as owned directly have been contributed to a family trust for which the reporting person is a co-trustee. Roger E George, Atty-in-Fact for Greg J. Santora 2016-02-05