ALIGN TECHNOLOGY INC — Director's Dealing 2013

May 3, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALIGN TECHNOLOGY INC (ALGN)
CIK: 0001097149
Period of Report: 2013-05-01

Reporting Person: Mack Timothy A (SVP, Mktg & Bus. Development)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-01	Common Stock	M	45000	$24.14	Acquired	59363	Direct
2013-05-01	Common Stock	S	45000	$32.6698	Disposed	14363	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-01	Right to Buy (Common Stock)	$24.14	M	45000	Disposed	2018-04-29	Common Stock (45000)	Direct

Footnotes

F1: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.38 to $33.06, 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.