SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Kolli Sreelakshmi (Last) (First) (Middle) C/O ALIGN TECHNOLOGY INC. 2560 ORCHARD PARKWAY (Street) SAN JOSE CA 95131 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol ALIGN TECHNOLOGY INC [ ALGN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) VP, Info Technology
	3. Date of Earliest Transaction (Month/Day/Year) 02/20/2017
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/20/2017	02/20/2017	M		10,741	A	$0.00	28,300(1)	D
Common Stock	02/20/2017	02/20/2017	F		4,515	D	$101.765	23,785	D
Common Stock								2,400	I	See Footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	$0.0001(3)	02/20/2017	02/20/2017	M			2,350	(4)	(4)	Common Stock	2,350	$0.00	0	D
Restricted Stock Unit	$0.0001(3)	02/20/2017	02/20/2017	M			2,070	(5)	(5)	Common Stock	2,070	$0.00	2,070	D
Restricted Stock Unit	$0.0001(3)	02/20/2017	02/20/2017	M			2,598	(6)	(6)	Common Stock	2,598	$0.00	0	D
Restricted Stock Unit	$0.0001(3)	02/20/2017	02/20/2017	M			1,820	(7)	(7)	Common Stock	1,820	$0.00	3,640	D
Restricted Stock Unit	$0.0001(3)	02/20/2017	02/20/2017	M			1,903	(8)	(8)	Common Stock	1,903	$0.00	5,706	D
Restricted Stock Unit	$0.0001(2)	02/20/2017	02/20/2017	A		5,000		(9)	(9)	Common Stock	5,000	$0.00	5,000	D
Market Stock Unit	$0.0001(2)	02/20/2017	02/20/2017	A		10,000		(10)	(10)	Common Stock	10,000	$0.00	10,000	D

Explanation of Responses:

1. Includes 453 shares issued on January 31, 2017 under the ALGN ESPP.

2. Held jointly with spouse.

3. Represents par value of ALGN common stock.

4. 1/4th of the restricted stock unit granted on February 20, 2013 became vested on February 20, 2017 and shares were delivered to reporting person on February 21, 2017.

5. 1/4th of the restricted stock unit granted on February 20, 2014 became vested on February 20, 2017 and shares were delivered to reporting person on February 21, 2017. The restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each vest date.

6. 1/4th of the restricted stock unit granted on February 20, 2014 became vested on February 20, 2017 and shares were delivered to reporting person on February 21, 2017.

7. 1/4th of the restricted stock unit granted on February 20, 2015 became vested on February 20, 2017 and shares were delivered to reporting person on February 21, 2017. The restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each vest date.

8. 1/4th of the restricted stock unit granted on February 20, 2016 became vested on February 20, 2017 and shares were delivered to reporting person on February 21, 2017. The restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each vest date.

9. 1/4th of the restricted stock unit granted on February 20, 2017 will become vested on February 20, 2018 and shares were delivered to reporting person on such vest date. The restricted stock unit will continue to vest annually and shares will be delivered to reporting person on each vest date.

10. Represents the maximum number of shares which may be issued under the market stock unit. All of the shares which may be issued under the market stock unit will vest on the last day of the third year of the Performance Period (as defined in the market stock unit agreement).

Remarks:

	Roger E. George Atty-In-Fact for Sreelakshmi Kolli	02/22/2017
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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