X0303 4 2010-05-20 0 0001097149 ALIGN TECHNOLOGY INC ALGN 0001238731 NAGEL DAVID C C/O ALIGN TECHNOLOGY 881 MARTIN AVE. SANTA CLARA CA 95050 1 0 0 0 Stock Option (Right to buy) 16.01 2010-05-20 2010-05-20 4 A 0 10000 0 A 2011-05-20 2017-05-20 Common Stock 10000 10000 D Restricted Stock Unit 0.0001 2010-05-20 2010-05-20 4 A 0 3000 0 A Common Stock 3000 3000 D Represents an option in which all of the shares underlying the option become vested and exercisable upon the earlier of (i) one year after the date of grant or (ii) the date of issuer's annual meeting of stockholders to be held in 2011. Represents par value of ALGN common stock 100% of the restricted stock unit will become vested upon the earlier of (i) one year after the date of grant or (ii) the date of issuer's annual meeting of stockholders to be held in 2011. Shares will be delivered to reporting person on the vest date. Roger E. George, Atty-in-Fact for David C. Nagel 2010-05-24