Exhibit 99.1

ALIGN TECHNOLOGY ANNOUNCES FIRST QUARTER 2018 FINANCIAL RESULTS

SAN JOSE, Calif., April 25, 2018 -- Align Technology, Inc. (Nasdaq: ALGN) today reported financial results for the first quarter ended March 31, 2018. Invisalign case shipments in the first quarter of 2018 (Q1’18) were 272.2 thousand, up 30.8% year-over-year. Americas and International region case shipments were up year-over-year 24.0% and 43.4%, respectively. Beginning Q1'18, Americas region includes North America and LATAM and the International region includes EMEA and APAC. Q1’18 Invisalign cases for teenage patients were 69.1 thousand, up 40.9% year-over-year. Q1’18 revenues were $436.9 million, up 40.8% year-over-year with Q1’18 operating income $98.2 million, up 59.2% year-over-year resulting in an operating margin of 22.5%. Net profit was $95.9 million, or $1.17 per diluted share, up $0.32 over the prior year.

Commenting on Align’s Q1 2018 results, Align Technology President and CEO Joe Hogan said, “I’m pleased to report better than expected first quarter results and a strong start to the year for Align, with revenues, volumes and EPS above our guidance. Record Q1 revenues were up 41% year-over-year reflecting continued strong Invisalign volume across all geographies and customer channels, as well as iTero scanner sales which were up 84% year-over-year. Q1 Invisalign volume growth of 31% year-over-year was driven by increased utilization including strong teen case growth globally, and expansion of our customer base, which included over 4,200 new Invisalign-trained doctors worldwide.”

GAAP Summary Financial Comparisons

First Quarter Fiscal 2018 

Note: Changes and percentages are based on actual values and may effect totals due to rounding

Align Technology, Inc. 2820 Orchard Pkwy, San Jose, CA 95134

Tel: (408) 470-1000 Fax: (408) 470-1010

WWW.ALIGNTECH.COM

¹ Invisalign Shipment figures do not include SmileDirectClub aligners

² Clear aligner revenue includes revenues from Invisalign clear aligners and SmileDirectClub aligners

³ Q4’17 net profit and diluted EPS includes $86.6 million tax expense, or $1.06 per diluted share negative impact due to the U.S. Tax Cut and Jobs Act

As of March 31, 2018, Align had $673.0 million in cash, cash equivalents and marketable securities compared to $761.5 million as of December 31, 2017. We repurchased approximately 0.4 million shares of stock for $100.0 million in Q1’18 under the April 2016 Repurchase Program. We have $100.0 million remaining available for repurchases under the existing stock repurchase authorization.

Announcements and Highlights

Today, Align issued the following press releases entitled:

Additional highlights in 2018 include:

Q2 2018 Business Outlook

For the second quarter of 2018 (Q2’18), Align provides the following guidance:

Align Web Cast and Conference Call

Align will host a conference call today, April 25, 2018 at 4:30 p.m. ET, 1:30 p.m. PT, to review its first quarter 2018 results, discuss future operating trends and the business outlook. The conference call will also be web cast live via the Internet. To access the webcast, go to the “Events & Presentations” section under Company Information on Align’s Investor Relations web site at http://investor.aligntech.com. To access the conference call, please dial 201-689-8261. An archived audio web cast will be available beginning approximately one hour after the call's conclusion and will remain available for approximately 12 months. Additionally, a telephonic replay of the call can be accessed by dialing 877-660-6853 with conference number 13678038 followed by #. For international callers, please dial 201-612-7415 and use the same conference number referenced above. The telephonic replay will be available through 5:30 p.m. ET on May 9, 2018.

About Align Technology, Inc.

Align Technology designs and manufactures the Invisalign® system, the most advanced clear aligner system in the world, and iTero® intraoral scanners and services. Align’s products help dental professionals achieve the clinical results they expect and deliver effective, cutting-edge dental options to their patients. Visit www.aligntech.com for more information.

For additional information about the Invisalign system or to find an Invisalign provider in your area, please visit www.invisalign.com. For additional information about iTero digital scanning system, please visit www.itero.com.

Forward-Looking Statement

This news release, including the tables below, contains forward-looking statements, including statements regarding certain business metrics for the second quarter of 2018, including, but not limited to, anticipated net revenues, gross margin, operating expenses, operating profit, diluted earnings per share, tax rate and case shipments. Forward-looking statements contained in this news release and the tables below relating to expectations about future events or results are based upon information available to Align as of the date hereof. Readers are cautioned that these forward-looking statements are only predictions and are subject to risks, uncertainties and assumptions that are difficult to predict. As a result, actual results may differ materially and adversely from those expressed in any forward-looking statement. Factors that might cause such a difference include, but are not limited to, difficulties predicting customer and consumer purchasing behavior, Align's ability to protect its intellectual property rights, continued compliance with regulatory requirements, competition from existing and new competitors, the willingness and ability of our customers to maintain and/or increase product utilization in sufficient numbers, the possibility that the development and release of new products does not proceed in accordance with the anticipated timeline, the possibility that the market for the sale of these new products may not develop as expected, or that the expected benefits of new or existing business relationships will not be achieved as anticipated, the risks relating to Align's ability to sustain or increase profitability or revenue growth in future periods while controlling expenses, growth related risks, including capacity constraints and pressure on our internal systems and personnel, the security of customer and/or patient data is compromised for any reason, continued customer demand for our existing and new products, changes in consumer spending habits as a result of, among other things, prevailing economic conditions, levels of employment, salaries and wages and consumer confidence, the timing of case submissions from our doctors within a quarter, acceptance of our products by consumers and dental professionals, changes to our interpretation of the U.S. Tax Cuts and Jobs Act which may change as we receive additional clarification and implementation guidance, possibly materially, foreign operational, political and other risks relating to Align's international manufacturing operations, Align's ability to develop and successfully introduce new products and product enhancements and the loss of key personnel. These and other risks are detailed from time to time in Align's periodic reports filed with the Securities and Exchange Commission, including, but not limited to, its Annual Report on Form 10-K for the year ended December 31, 2017, which was filed with the Securities and Exchange Commission (SEC) on February 28, 2018. Align undertakes no obligation to revise or update publicly any forward-looking statements for any reason.

* During Q1'18, we adopted the ASC 606, "Revenues from Contracts with Customers" using the full retrospective method. Condensed Consolidated Balance Sheet as of December 31, 2017 has been recasted to comply with the adoption.

*During Q1'18, we adopted ASU 2016-18, "Statement of Cash Flows - Restricted Cash" on a retrospective basis. Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2017 has been recasted to comply with the adoption.

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