Item 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES


(a)	Financial Statements


1.	Consolidated financial statements

The following documents are filed as part of this Annual Report on Form 10-K:



Report of Independent Registered Public Accounting Firm	56
Consolidated Statements of Operations for the year ended December 31, 2017, 2016 and 2015	58
Consolidated Statements of Comprehensive Income for the year ended December 31, 2017, 2016 and 2015	59
Consolidated Balance Sheets as of December 31, 2017 and 2016	60
Consolidated Statements of Stockholders’ Equity for the year ended December 31, 2017, 2016 and 2015	61
Consolidated Statements of Cash Flows for the year ended December 31, 2017, 2016 and 2015	62
Notes to Consolidated Financial Statements	63


2.	The following financial statement schedule is filed as part of this Annual Report on Form 10-K:

Schedule II—Valuation and Qualifying Accounts and Reserves For the Year Ended December 31, 2017, 2016 and 2015

All other schedules have been omitted as they are not required, not applicable, or the required information is otherwise included.

SCHEDULE II: VALUATION AND QUALIFYING ACCOUNTS AND RESERVES



	Balance at Beginning of Period		Additions (Reductions) to Costs and Expenses			Write Offs			Balance at End of Period
	(in thousands)
Allowances for doubtful accounts and sales returns:
Year ended December 31, 2015	$	1,563	$	8,944		$	(8,035	)	$	2,472
Year ended December 31, 2016	$	2,472	$	8,585		$	(6,747	)	$	4,310
Year ended December 31, 2017	$	4,310	$	9,948		$	(7,080	)	$	7,178
Valuation allowance for deferred tax assets:
Year ended December 31, 2015	$	32,498	$	(813	)	$	—		$	31,685
Year ended December 31, 2016	$	31,685	$	(31,429	)	$	—		$	256
Year ended December 31, 2017	$	256	$	21		$	—		$	277


(b)	The following Exhibits are included in this Annual Report on Form 10-K:



Exhibit Number	Description	Form	Date	Exhibit Number Incorporated by Reference herein	Filed herewith
3.1	Amended and Restated Certificate of Incorporation of registrant	Form S-1, as amended (File No. 333-49932)	12/28/2000	3.1
3.2	Amended and Restated Bylaws of registrant	Form 8-K	2/29/2012	3.2
4.1	Form of Specimen Common Stock Certificate	Form S-1, as amended (File No. 333-49932)	1/17/2001	4.1
10.1†	Registrant's 2005 Incentive Plan (as amended May 2016)	Form 10-K	2/28/2017	10.1
10.2†	Form of RSU agreement under Registrant's 2005 Incentive Plan (Officer Form for officers appointed after September 2016)	Form 10-K	2/28/2017	10.2
10.2A†	Form of RSU agreement under Registrant's 2005 Incentive Plan (Officer Form for officers appointed prior to September 2016)	Form 10-K	2/28/2017	10.2A
10.3	Align’s 2010 Employee Stock Purchase Plan	Form 8-K	5/25/2010	10.2
10.4†	Form of Indemnification Agreement by and between registrant and its Board of Directors and its executive officers	Form S-1 as amended (File No. 333-49932)	1/17/2001	10.15
10.5†	Form of restricted stock unit award agreement under registrant’s 2005 Incentive Plan (General Form; Director Form)	Form 10-Q	11/5/2007	10.1A
10.5†	Form of restricted stock unit award agreement under registrant’s 2005 Incentive Plan (General Form; Director Form)	Form 10-Q	11/5/2007	10.1C
10.6†	Form of option award agreement under registrant’s 2005 Incentive Plan	Form 10-Q	8/4/2005	10.4
10.7†	Form of Employment Agreement entered into by and between registrant and each executive officer (other than CEO for executives appointed prior to September 2016)	Form 10-Q	5/8/2008	10.3
10.8†	Form of Employment entered into by and between registrant and each executive officer (other than CEO for executives appointed after September 2016)	Form 10-K	2/28/2017	10.8
10.10†	Summary of 2017 Incentive Awards and Base Salaries	Form 8-K	2/7/2018
10.11†	Form of Market Stock Unit Agreement (officer)	Form 8-K	2/24/2011	10.1
10.12†	Form of Market Stock Unit Agreement (CEO)	Form 8-K	2/24/2011	10.2
10.13†	Description of Executive Officer Incentive Plan	Form 8-K	2/4/2011	Item 5.02
10.15†	Amended and Restated Chief Executive Officer Employment Agreement between Align Technology, Inc. and Joseph Hogan	Form 10-Q	5/1/2015	10.3
10.16†	2005 Incentive Plan Notice of Grant of Restricted Stock units (Chief Executive Officer)	Form 10-Q	7/30/2015	10.31
10.17†	Amended and Restated 2005 Incentive Plan Notice of Grant of Market Stock Units (Chief Executive Officer)	Form 10-Q	7/30/2015	10.34



Exhibit Number	Description	Form	Date	Exhibit Number Incorporated by Reference herein	Filed herewith
10.18†	Employment Agreement between registrant and John F. Morici (Chief Financial Officer)	Form 10-Q	11/8/2016	10.2
10.19	Purchase and Sale Agreement between registrant and LBA RIV-Company XXX, LLC dated December 19, 2016	Form 8-K	12/23/2016	10.1
10.20	Class C Non-Incentive Unit Purchase Agreement dated July 25, 2016	Form 8-K	7/28/2016	10.1
10.21	Purchase and Sale Agreement dated July 24, 2017 between Align Technology de Costa Rica, S.R.L. and Belan Business Center, S.A.	Form 8-K	7/27/2017	10.1
10.22	Membership Interest Purchase Agreement dated July 24, 2017 between Align Technology, Inc. and SmileDirectClub, LLC.	Form 8-K	7/27/2017	10.2
10.23	Purchase and Sale Agreement between Align Technology de Costa Rica, S.R.L. and Belen Business Center, S.A. dated November 15, 2017	Form 8-K	11/20/2017	10.1
10.24†	Current form of Market Stock Unit agreement under Registrant's 2005 Incentive Plan.			10.1	*
10.24†	Current form of Market Stock Unit agreement under Registrant's 2005 Incentive Plan.			10.2	*
10.25	Credit Agreement between Align Technology, Inc. and Wells Fargo Bank, National Association dated February 27, 2018			10.3
21.1	Subsidiaries of Align Technology, Inc.				*
23.1	Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm				*
31.1	Certifications of Chief Executive Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2003				*
31.2	Certifications of Chief Financial Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2003				*
32	Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2003				*
101.INS	XBRL Instance Document				*
101.SCH	XBRL Taxonomy Extension Schema Document				*
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document				*
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document				*
101.LAB	XBRL Taxonomy Extension Label Linkbase Document				*
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document				*



†	Management contract or compensatory plan or arrangement filed as an Exhibit to this form pursuant to Items 14(a) and 14(c) of Form 10-K.
††	Portions of the exhibit have been omitted pursuant to a request for confidential treatment. The confidential portions have been filed with the SEC.

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