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Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated financial statements and related notes included elsewhere in this Annual Report on Form 10-K.

A discussion regarding our financial condition and results of operations for fiscal 2023 compared to fiscal 2022 is presented under Results of Operations of this Form 10-K. Discussions regarding our financial condition and results of operations for fiscal 2022 compared to 2021 have been omitted from this Annual Report on Form 10-K, but can be found in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, filed with the SEC on February 27, 2023, which is available without charge on the SEC's website at www.sec.gov and on our investor relations website at investor.aligntech.com.

Executive Overview of Results

Trends and Uncertainties

Our business strategic priorities focus on four principal pillars for growth: (i) international expansion; (ii) GP dentist treatment; (iii) patient demand; and (iv) orthodontic utilization. Our growth strategy depends on our ability to facilitate the digital transformation of dentistry happening around the world, our continuous focus on innovation, and expansion to meet and exceed evolving customer expectations as the array of products and services available to them increases.

We strive to deliver on each of our strategic growth drivers through a variety of interrelated enterprise-wide efforts including:

•Continuing penetration and adoption of Invisalign products, intraoral scanners and CAD/CAM solutions in international markets by investing in manufacturing operations, research and development, clinical treatment planning, sales and marketing and building our quality and regulatory capabilities in existing and emerging markets globally. For instance, in 2022, we opened a new aligner fabrication facility in Wroclaw, Poland as a part of our strategy to bring operational facilities closer to customers to serve them more quickly and respond to their needs more effectively as well as new treatment planning operations in targeted regional geographies. We have also diversified our research and development activities throughout Europe, which has created a longer term, more stable environment for consistent hiring, retention and innovation in a variety of high technology sectors. We are in over 100 markets and have 13 fabrication and treatment locations throughout the world.

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•Targeting growth opportunities with international orthodontists and GP customers, particularly with adopters of digital dentistry platforms by tailoring our sales and marketing strategies, manufacturing operations and resources around the unique needs of each customer channel. As we continue growing, we intend to opportunistically expand our research, development, manufacturing, treatment planning, and sales and marketing operations to meet local and regional demand thoughtfully and deliberately. Over the longer-term, we expect international revenues to grow faster than Americas' revenues as a result of growing international demand, our continued investment in international market expansion, the size of the market opportunities and our relatively low market penetration in these regions.

•Building confidence within the GP and orthodontic communities through training and education efforts to increase their adoption and utilization of digital dental practice transformation and clear aligner treatment. We continue to expand our clear aligner customer base by educating new doctors on the benefits of digital dentistry through the Invisalign system. We furthermore demonstrate to GPs and orthodontists how the iTero portfolio of intraoral scanners and CAD/CAM restorative services and workflows can increase revenues and profitability for their dental practices by enhancing patient experiences and creating operational practice efficiencies.

•Investing in research and development that allows us to innovate, develop and bring to market products and solutions that deliver the ever-increasing clinical precision and predictability that doctors expect with the speed and convenience their patients require.

•Creating demand and enabling patient conversion through targeted investments in advertising and public relations through social media, influencers and other forms of digital communications to encourage treatment by Invisalign trained doctors. We believe that well-designed, targeted sales and marketing promotions that build on our strong brand awareness allow us to differentiate our products and solutions from traditional and emerging competitors. To increase awareness and educate young adults, parents and teens about the benefits of the Invisalign brand, in 2023 we continued to invest in and create campaigns across markets in media platforms such as TikTok, Instagram, YouTube, SnapChat, WeChat, and Douyin. We expect to make further investments to create additional demand for Invisalign system treatment driving more consumers to dental professionals for those treatments.

•Pursuing new product lines that complement our doctor-prescribed principal products currently available in certain e-commerce and retail channels in the U.S. Similarly, in 2023, we continued our focus on our doctor subscription plan and grew our underpenetrated share of the retainer business through strategic marketing campaigns focused on driving adoption and increasing market share in the U.S., Canada, Iberia and the Nordics.

•Increasing global orthodontic utilization rates as doctors’ clinical confidence in the efficacy and predictability of the Invisalign system increases with advancements in products and technology and as patients and doctors demand treatments that emphasize convenience and safety through fewer visits and less invasive and quicker treatments. In addition, the teenage and younger market makes up about 70% of the approximately 22 million total annual global orthodontic case starts. We continue to emphasize the benefits of the Invisalign system for teenage and younger patient treatments through education, training and sales and marketing programs. In 2023, we had record shipments to teenage and younger patients. We expect utilization rates to continue to rise. However, our utilization rates will fluctuate from period to period due to a variety of factors, which may include seasonal trends in our business, consumer demand due to macroeconomic factors, and adoption rates for new products and features.

Macroeconomic Challenges and Military Conflict in Ukraine and the Middle East

Our revenues are susceptible to fluctuations caused by macroeconomic conditions, inflation, changes to currency exchange rates, rising interest rates, actual and threatened wars and military actions, threats of or actual recessions, supply chain challenges, market volatility, and other factors, each of which impacts customer confidence, consumer sentiment and demand. Many of these same factors also impact our costs and those of our suppliers through higher raw material prices, transportation costs, labor costs, supply and distribution operations. In 2023, we believe that sales of our products were primarily harmed by macroeconomic conditions that ultimately adversely impacted disposable income and consumer demand. In particular, dental practices and industry research firms reported deteriorating orthodontic trends for the third and fourth quarters of 2023, including decreased patient visits and increased patient appointment cancellations, along with fewer case starts overall, especially among adult patients. The impact of declining demand varied by time and region, making operational results uncertain and difficult to predict.

Additionally, many of our international operations are denominated in currencies other than the U.S. dollar. In 2023, the macroeconomic slowing or contraction resulted in foreign exchange volatility causing the U.S dollar to strengthen against other currencies. This negatively impacted our financial condition and results of operation compared to 2022. Foreign exchange

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volatility and the subsequent strengthening or weakening of the U.S dollar against other currencies remains uncertain and unpredictable.

Moreover, military conflicts increase the unpredictability of the volatile macroeconomic conditions. While the military conflict between Russia and Ukraine did not materially impact our 2023 financial condition and results of operations, we expect the conflict will continue to create market uncertainties and dampen consumer sentiment and demand, particularly in Europe.

Similarly, the recent conflict in the Middle East may further exacerbate general and regional macroeconomic instability, particularly if fighting is prolonged, it spreads to other locations, creates shipping and logistical challenges or cost increases, or leads to sanctions or boycotts. Our iTero business is headquartered in Israel and the timing and cost of shipping our products has been impacted. Additionally, we have employees and consultants in Israel that have been called for military service and they may be unavailable for an unknown period of time. The conflict may continue to spread to other areas which may further impact our business. We continue to monitor the potential for violence and military actions that may directly or indirectly impact our personnel, manufacturing, supply chain, and sales.

Changing Product Preferences

As the markets for clear aligners and digital processes and workflows used to transform the practice of dentistry continue to mature, we anticipate customer and patient expectations and demands will evolve. We expect to meet customer demands with innovative treatment options that include more choices to address a wider scope of treatment goals and budgets based on our existing and new products. This may result in larger and unpredictable variations in geographic and product mix and selling prices with uncertain implications on our financial statements and business operations.

We strive to manage the challenges from the trends and uncertainties, including the macroeconomic conditions, military conflict and the evolution of our target markets, by focusing on improving our operations, building flexibility and efficiencies in our processes, adjusting our business models to changing circumstances and offering products that meet market demand. Specifically, we are managing cost impacts through pricing actions, implementing cost saving measures and slowing hiring. We also continue to innovate and introduce new and enhanced products that augment our doctor customer and patient experiences.

For instance, in the first quarter of 2023, we successfully launched the Invisalign Comprehensive 3in3 product. The 3in3 configuration offers doctors Invisalign Comprehensive treatment with a three-year treatment expiration date and three additional clear aligners included prior to the treatment expiration date. We anticipate adoption of the Invisalign Comprehensive 3in3 product will continue to increase in 2024. The 3in3 product allows us to recognize more revenue up front but is offered at a lower price as compared to our traditional Invisalign comprehensive product that has a five-year treatment expiration date with unlimited additional clear aligner prior to the treatment end date.

Further discussion of the impact of these challenges on our business may be found in Part I, Item 1A of this Annual Report on Form 10-K under the heading “Risk Factors.”

Key Financial and Operating Metrics

We measure our performance against these strategic priorities by the achievement of key financial and operating metrics. For the year ended December 31, 2023, our business operations reflect the following:

◦Revenues of $3,862.3 million, an increase of 3.4% year-over-year;

◦Clear Aligner revenues of $3,199.3 million, an increase of 4.1% year-over-year;

▪Americas Clear Aligner case revenues of $1,463.0 million, a decrease of 0.6% year-over-year;

▪International Clear Aligner case revenuesof $1,449.5 million, an increase of 7.4% year-over-year;

▪Clear Aligner volume increase of 0.4% year-over-year and Clear Aligner volume increase for teenage patients of 7.8% year-over-year;

◦Imaging Systems and CAD/CAM Services revenues of $662.9 million, an increase of 0.1% year-over-year;

◦Income from operations of $643.3 million and operating margin of 16.7%;

◦Effective tax rate of 30.6%;

◦Net income of $445.1 million with diluted net income per share of $5.81;

◦Cash, cash equivalents and marketable securities of $980.8 million as of December 31, 2023;

◦Operating cash flow of $785.8 million;

◦Capital expenditures of $177.7 million, predominantly related to purchases of property, plant and equipment; and

◦Number of employees was 21,610 as of December 31, 2023, a decrease of 6.7% year-over-year.

Other Statistical Data and Trends

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•As of December 31, 2023, 17 million people worldwide have been treated with our Invisalign system. Management measures these results by comparing to the millions of people who can benefit from straighter teeth and uses this data to target opportunities to expand the market for orthodontics by educating consumers about the benefits of straighter teeth using the Invisalign system.

•For the fourth quarter of 2023, total Invisalign cases submitted with a digital scanner in the Americas increased to 95.1%, up from 92.7%* in the fourth quarter of 2022 and international scans increased to 88.1%, up from 86.8% in the fourth quarter of 2022. For the fourth quarter of 2023, 98.0% of Invisalign cases submitted by North American orthodontists were submitted digitally.

•The total utilization rate in 2023 was 19.1 cases per doctor compared to 19.3* cases per doctor in 2022 and 20.9* cases per doctor in 2021. Our utilization rates have declined in 2023 due to the macroeconomic conditions and other factors as described in the Trends and Uncertainties section above. In general, we expect utilization rates to rise over time although they are likely to fluctuate from period to period.

•North America: The utilization rate among our North American orthodontist customers was 94.5 cases per doctor in 2023 compared to 94.9* cases per doctor in 2022 and 99.7* cases per doctor in 2021 and the utilization rate among our North American GP customers was 14.0 cases per doctor in 2023 compared to 13.9 cases per doctor in 2022 and 14.3 cases per doctor in 2021.

•International: International doctor utilization rate was 16.3 cases per doctor in 2023 compared to 16.2 cases per doctor in 2022 and 17.5 cases per doctor in 2021.

* Invisalign utilization rates are calculated by the number of cases shipped divided by the number of doctors to whom cases were shipped. Our International region includes Europe, Middle East and Africa (“EMEA”) and Asia Pacific (“APAC”). Latin America (“LATAM”) is excluded from the International region based on its immateriality to the year; however is included in the Total utilization.

During the third quarter of 2023, we began including Touch Up case revenues in Americas and/or International net revenues that were previously included in Non-Case revenues and have recast business metrics for the periods presented above accordingly.

Results of Operations

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Net Revenues by Reportable Segment

We group our operations into two reportable segments: Clear Aligner segment and Systems and Services segment.

•Our Clear Aligner segment consists of Comprehensive Products, Non-Comprehensive Products and Non-Case revenues as defined below:

•Comprehensive Products include, but are not limited to, Invisalign Comprehensive and Invisalign First.

•Non-Comprehensive Products include, but are not limited to, Invisalign Moderate, Lite and Express packages and Invisalign Go and Invisalign Go Plus.

•We also offer in the U.S., Canada, and EMEA, a Doctor Subscription Program which is our monthly subscription-based clear aligner program. The program allows doctors the flexibility to order retainers and low-stage “touch-up” clear aligners within their subscribed tier and is designed for a segment of experienced Invisalign trained doctors who are currently not regularly using our retainers or low-stage aligners. The low-stage aligners, the Touch up product, are included as a Non-Comprehensive Product.

•Non-Case products include, but are not limited to, retention products including retention aligners ordered through the Doctor Subscription Program, Invisalign training, adjusting tools used by dental professionals during the course of treatment and Invisalign Accessory Products that are complementary to our doctor-prescribed principal products such as aligner cases (clamshells), teeth whitening products, cleaning solutions (crystals, foam and other material) and other oral health products available in certain commerce channels in select markets.

•Our Systems and Services segment consists of our iTero intraoral scanning systems, which includes a single hardware platform and restorative or orthodontic software options. Our services include subscription software, disposables, rentals, leases, pay per scan services, as well as exocad’s CAD/CAM software solutions that integrate workflows to dental labs and dental practices.

Net revenues for our Clear Aligner and Systems and Services segments by region for the year ended December 31, 2023, 2022 and 2021 are as follows (in millions):

Year Ended December 31, Year Ended December 31,

Clear Aligner revenues:

During 2023, we began including Touch Up case revenues in Americas and/or International net revenues. Touch Up case revenues were previously recorded in Non-case revenues. We have recast the year ended December 31, 2022 and 2021 to reflect this change. Amount and percentage changes are based on recast amounts. Certain tables may not sum or recalculate due to rounding.

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Clear Aligner Case Volume

Case volume data which represents Clear Aligner case shipments for the year ended December 31, 2023, 2022 and 2021 is as follows (in thousands):

Year Ended December 31, Year Ended December 31,

During 2023, we began including Touch Up case revenues in Americas and/or International net revenues. Touch Up case revenues were previously recorded in Non-case revenues. We have recast the year ended December 31, 2022 and 2021 to reflect this change. Amount and percentage changes are based recast amounts. Certain tables may not sum or recalculate due to rounding.

Total net revenues increased by $127.6 million in 2023 as compared to 2022, primarily due to an increase in Clear Aligner average selling price (“ASP”), an increase in Clear Aligner non-case revenue and higher Systems and Services services mix, partially offset by a decrease in both scanner volumes and ASP’s.

Clear Aligner - Americas

Americas net revenues decreased by $9.0 million in 2023 as compared to 2022, primarily due to a 2.1% decrease in case volumes, resulting in a reduction of net revenues of $31.4 million, partially offset by a $22.4 million increase due to higher ASP. Higher ASP includes price increases which increased net revenues by $68.6 million along with higher additional aligners which increased net revenues by $43.9 million. The increases in ASP were partially offset by higher promotional discounts which decreased net revenues by $44.3 million, a product mix shift to lower priced products which reduced net revenues by $37.6 million and higher sales credits which lowered net revenues $11.5 million.

Clear Aligner - International

International net revenues increased by $100.5 million in 2023 as compared to 2022due to a 3.5% increase in case volumes, resulting in an increase of net revenues by $46.9 million, and higher ASP increasing net revenues by $53.6 million. Higher ASP was largely due to higher additional aligners increasing net revenues by $100.8 million and price increases on most products which increased net revenues by $96.9 million. The increases in ASP were partially offset by a product mix shift to lower priced products reducing net revenues by $68.2 million, higher promotional discounts which reduced net revenues by $52.5 million, and unfavorable foreign exchange rates which decreased net revenues by $27.2 million.

Clear Aligner - Non-Case

Non-case net revenues increased by $35.2 million in 2023 compared to 2022 mainly due to increased volume of Vivera retainers across all regions which includes retention aligners ordered through our Doctor Subscription Program.

Systems and Services

Systems and Services net revenues decreased by $0.9 million in 2023 as compared to 2022 primarily due to a lower number of scanners sold which lowered net revenues by $26.1 million and lower scanner ASP which reduced net revenues by $23.9 million. The decrease in scanner net revenues was mostly offset by higher service revenues of $31.8 million and other revenues which increased $19.1 million primarily due to revenue from sales of certified pre-owned scanners, CAD/CAM software, and scanner rentals.

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Cost of net revenues and gross profit (in millions):

Year Ended December 31, Year Ended December 31,

Clear Aligner

Systems and Services

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

Cost of net revenues includes personnel-related costs including payroll and stock-based compensation for staff involved in the production process, the cost of materials, packaging, freight and shipping related costs, depreciation on capital equipment and facilities used in the production process, amortization of acquired intangible assets and training costs.

Clear Aligner

The gross margin percentage decreased in 2023 as compared to 2022 primarily due to a increased manufacturing spend offset by higher ASP.

Systems and Services

The gross margin percentage increased in 2023 as compared to 2022 primarily due to lower purchase price variance and higher service revenue mix, partially offset by lower ASP.

Selling, general and administrative (in millions):

Year Ended December 31, Year Ended December 31,

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

Selling, general and administrative expense generally includes personnel-related costs, including payroll, stock-based compensation and commissions for our sales force, marketing and advertising expenses including media, market research, marketing materials, clinical education, trade shows and industry events, legal and outside service costs, equipment, software and maintenance costs, depreciation and amortization expense and allocations of corporate overhead expenses including facilities and Information Technology (“IT”).

Selling, general and administrative expense increased in 2023 compared to 2022 primarily due to higher employee costs, including higher salaries expense, fringe benefits, stock-based compensation and bonus, offset by lower advertising and marketing and outside service provider costs.

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Research and development (in millions):

Year Ended December 31, Year Ended December 31,

% of net revenues 9.0 % 8.2 % 8.2 % 6.3 %

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

Research and development expense generally includes personnel-related costs, including payroll and stock-based compensation, outside service costs associated with the research and development of new products and enhancements to existing products, software, equipment, material and maintenance costs, depreciation and amortization expense and allocations of corporate overhead expenses including facilities and IT.

Research and development expense increased in 2023 compared to 2022 primarily due to higher employee costs, including higher salaries expense, fringe benefits, stock-based compensation and bonus as we continue to focus our investments in innovation and research.

Restructuring and other charges (in millions):

Year Ended December 31, Year Ended December 31,

% of net revenues 0.3 % 0.3 % 0.3 % — %

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

Restructuring and other charges incurred during 2023 was primarily related to post employment benefits, including employee severance.

Income from operations (in millions):

Year Ended December 31, Year Ended December 31,

Clear Aligner

Systems and Services

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

1Refer to Note 15 “Segments and Geographical Information” of the Notes to Consolidated Financial Statements for details on unallocated corporate expenses and the reconciliation to Consolidated Income from Operations.

Clear Aligner

Operating margin percentage remained relatively flat in 2023 compared to 2022 primarily due to a decrease in gross margin which was offset by operating leverage.

Systems and Services

Operating margin percentage increased in 2023 compared to 2022 primarily due to higher gross margin.

Interest income (in millions):

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Year Ended December 31, Year Ended December 31,

% of net revenues 0.4 % 0.1 % 0.1 % 0.1 %

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

Interest income generally includes interest earned on cash, cash equivalents and investment balances.

Interest income increased in 2023 compared to 2022 primarily due to higher interest rates during 2023.

Other income (expense), net (in millions):

Year Ended December 31, Year Ended December 31,

% of net revenues (0.5) % (1.3) % (1.3) % 0.8 %

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

Other income (expense), net, generally includes foreign exchange gains and losses, gains and losses on foreign currency forward contracts, interest expense, gains and losses on equity investments and other miscellaneous charges.

Other income (expense), net decreased in 2023 compared to 2022primarily due to the favorable impact of foreign exchange rates offset slightly by losses in investments in private companies.

Provision for (benefit from) income taxes (in millions):

Year Ended December 31, Year Ended December 31,

Changes and percentages are based on actual values. Certain tables may not sum or recalculate due to rounding.

The decrease in our effective tax rate for the year ended December 31, 2023 compared to the same period in 2022 is primarily attributable to the application of newly issued tax guidance, including IRS Notice 2023-55 and a change in our jurisdictional mix of income.

Liquidity and Capital Resources

Liquidity and Trends

As of December 31, 2023 and 2022, we had the following cash and cash equivalents and short-term and long-term marketable securities (in thousands):

December 31,

As of December 31, 2023 and 2022, approximately $784.7 million and $653.7 million, respectively, of cash, cash equivalents and marketable securities were held by our foreign subsidiaries. We intend to reinvest our foreign subsidiary earnings indefinitely outside of the U.S. and do not expect to incur significant additional costs upon repatriation of these foreign earnings. We generate sufficient domestic operating cash flow and have access to $300.0 million under our revolving line of

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credit. We believe that our current cash balances and the borrowing capacity under our credit facility, if necessary, will be sufficient to fund our business for at least the next 12 months.

Our material cash requirements as of December 31, 2023 are as below:

•Our purchase commitments consist primarily of open purchase orders for goods and services, including manufacturing inventory, supplies and services, sales and marketing, research and development services and technological services, issued in the normal course of business. Our purchase commitments totaled $1,234.5 million. We anticipate a majority, an estimated $861.5 million, will be payable within the next 12 months. These purchase commitments exclude capital expenditures.

•We expect our investments in capital expenditures to be approximately $100.0 million for the next 12 months. Capital expenditures primarily relate to building construction and improvements as well as additional manufacturing capacity due to international expansion. Despite the challenging market conditions, we intend to expand our investments in research and development, manufacturing, treatment planning, sales and marketing operations to meet actual and anticipated local and regional demands.

•We have future operating lease payments of $153.5 million, which includes $13.3 million for leases that have not yet commenced as of December 31, 2023. Refer to Note 4 “Leases” of the Notes to Consolidated Financial Statements for details on the lease payments.

•We have approximately $650.0 million available for repurchases of our common stock under the stock repurchase program authorized by our Board of Directors in January 2023 (“January 2023 Repurchase Program”). Our stock repurchase program is subject to periodic evaluations to determine when and if repurchases are in the best interests of our stockholders, taking into account prevailing market conditions. Refer to Note 10 “Common Stock Repurchase Programs” of the Notes to Consolidated Financial Statements for details on our stock repurchase programs. Beginning in fiscal year 2023 our stock repurchases, net of certain issuances, were subject to a 1% excise tax. This excise tax is not expected to have a material impact on our liquidity or capital resources.

•On January 2, 2024 we completed the acquisition of the remaining interest in privately held Cubicure GmbH for total purchase consideration of approximately $87 million. We paid approximately $79 million in cash, which represents the total purchase consideration less credit for our previously owned interest.

•As of December 31, 2023, we had no material off-balance sheet arrangements that have, or are reasonably likely to have, a current or future material impact on our liquidity or capital resources.

Sources and Use of Cash

The following table summarizes our Consolidated Statements of Cash Flows for the year ended December 31, 2023, 2022 and 2021 (inthousands):

Year Ended December 31,

Net cash provided by (used in):

Operating Activities

For the year ended December 31, 2023, cash flows from operations of $785.8 million resulted primarily from our net income of approximately $445.1 million as well as the following:

Significant adjustments to net income

•Stock-based compensation of $154.0 million related to equity awards granted to employees and directors; and

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•Depreciation and amortization of $142.4 million related to our investments in property, plant and equipment and intangible assets.

Significant changes in working capital

•Inflow of $46.3 million, net from accrued and other long-term liabilities primarily due to higher incentive accruals for 2023, as well as timing of payments of other activities;

•Inflow of $86.7 million, net from deferred revenues due to the deferral of revenue on shipments;

•Inflow of $30.2 million, net from inventories primarily due to lower purchases of materials used in manufacturing; and

•Outflow of $104.6 million, net from accounts receivable due to timing of collections and increased revenues.

For the year ended December 31, 2022, cash flows from operations of $568.7 million resulted primarily from our net income of approximately $361.6 million as well as the following:

Significant adjustments to net income

•Stock-based compensation of $133.4 million related to equity awards granted to employees and directors;

•Depreciation and amortization of $125.8 million related to our investments in property, plant and equipment and intangible assets; and

Significant changes in working capital

•Inflow of $241.9 million, net from deferred revenues due to the deferral of revenue on shipments over the period as well as timing of revenue recognition;

•Outflow of $130.1 million, net from inventories primarily due to lower shipment volumes over the period in addition to our efforts to manage stock at appropriate levels as required; and

•Outflow of $121.9 million, net from accrued and other long-term liabilities primarily due to the payment of our 2021 corporate bonus as well as timing payment of other activities.

Investing Activities

Net cash used in investing activities was $195.9 million for the year ended December 31, 2023 which primarily consisted of purchases of property, plant and equipment of $177.7 million which included a building acquisition for $24.5 million, an investment in the equity of a privately held company of $77.0 million and purchases of marketable securities of $2.9 million, partially offset by sales and maturities of marketable securities of $61.4 million.

Net cash used in investing activities was $213.3 million for the year ended December 31, 2022 which primarily consisted of purchases of property, plant and equipment of $291.9 million, purchases of marketable securities of $28.0 million and $12.3 million cash paid relating to a business acquisition. These outflows were partially offset by sales and maturities of marketable securities of $121.1 million.

Financing Activities

Net cash used in financing activities was $598.3 million for the year ended December 31, 2023 which consisted of payments to repurchase shares of our common stock of $602.4 million and payroll taxes paid for equity awards through share withholdings of $22.6 million, which were partially offset by $26.6 million of proceeds from the issuance of common stock.

Net cash used in financing activities was $501.7 million for the year ended December 31, 2022 which consisted of payments to repurchase shares of our common stock of $475.0 million and payroll taxes paid for equity awards through share withholdings of $52.8 million, which were partially offset by $26.1 million of proceeds from the issuance of common stock.

Critical Accounting Estimates

Management’s discussion and analysis of our financial condition and results of operations is based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of financial statements requires management to make estimates and judgments that affect the reported amounts of assets and liabilities, revenues and expenses and disclosures at the date of the financial statements. We

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evaluate our estimates on an on-going basis and use authoritative pronouncements, historical experience and other assumptions as the basis for making the estimates. Actual results could differ from those estimates.

We believe the following critical accounting estimates affect our more significant judgments used in the preparation of our consolidated financial statements. For further information on all of our significant accounting policies, see Note 1 “Summary of Significant Accounting Policies” of the Notes to Consolidated Financial Statements.

Revenue Recognition

Our revenues are derived primarily from the sale of aligners, scanners, and services from our Clear Aligner and Systems and Services segments. We enter into sales contracts that may consist of multiple distinct performance obligations where certain performance obligations of the sales contract are not delivered in one reporting period. We measure and allocate revenues according to ASC 606-10, “Revenues from Contracts with Customers.”

Determining the standalone selling price (“SSP”) in order to allocate consideration from the contract to the individual performance obligations is the result of various factors, such as historical prices, changing trends and market conditions, costs, and gross margins. While changes in the allocation of the SSP between performance obligations will not affect the amount of total revenues recognized for a particular contract, any material changes could impact the timing of revenue recognition, which would have a material effect on our financial position and result of operations. This is because the contract consideration is allocated to each performance obligation, delivered or undelivered, at the inception of the contract based on the SSP of each distinct performance obligation.

We allocate consideration for each clear aligner treatment plan based on each unit’s SSP. Management considers a variety of factors such as same or similar product historical sales, costs, and gross margin, which may vary over time depending upon the unique facts and circumstances related to each performance obligation in making these estimates. In addition to historical data, we take into consideration changing trends and market conditions. For treatment plans with multiple options, we also consider usage rates, which is the number of times a customer is expected to order more aligners after the initial shipment. Our process for estimating usage rates requires significant judgment and evaluation of inputs, including historical usage data by region, country and channel.

We estimate the SSP of each element in a scanner system and services sale taking into consideration same or similar product historical prices as well as our discounting strategies. For CAD/CAM services, we estimate the SSP of each element, including the initial software license and maintenance and support, using data such as historical prices.

Unfulfilled Performance Obligations for Clear Aligners and Scanners

Our unfulfilled performance obligations, including deferred revenues and backlog, and the estimated revenues expected to be recognized in the future related to these performance obligations are $1,578.3 million and $1,515.4 million as of December 31, 2023 and 2022, respectively. This includes performance obligations from the Clear Aligner reportable segment, primarily the shipment of additional aligners, which are fulfilled over six months to five years. This also includes performance obligations from our Systems and Services reportable segment, primarily services and support, which are fulfilled over one to five years, and contracted deliveries of additional scanners. The estimate includes both product and service unfulfilled performance obligations and the time range reflects our best estimate of when we will transfer control to the customer and may change based on customer usage patterns, timing of shipments, readiness of customers' facilities for installation, and manufacturing availability.

Impairment of Goodwill and Finite-Lived Intangible Assets

Goodwill

We evaluate goodwill for impairment at least annually on November 30th or more frequently if indicators of impairment are identified between annual testing dates. Goodwill is tested for impairment between annual testing dates when events or circumstances indicate that the fair value of a reporting unit has been reduced below its carrying value. When an indicator of impairment is identified we perform a quantitative impairment assessment in which we determine the fair value of a reporting unit and compare it to the carrying value of the respective reporting unit. We generally determine the fair value of a reporting unit via a discounted cash flow analysis and allocate the net assets of the Company to each reporting unit to determine carrying value. We will record an impairment charge when our quantitative impairment analysis indicates that the carrying value of a reporting unit exceeds its fair value. Both the determination of fair value and carrying value of a reporting unit require management to exercise significant judgement related to operating assumptions and estimates and allocation methodologies.

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Finite-Lived Intangible Assets

Finite-lived intangible assets are reviewed for impairment when events or circumstances indicate that the carrying value of an asset (asset group) may not be recoverable. When an impairment indicator is identified, we perform a recoverability test, in which the estimated, undiscounted future cash flows expected to result from the use and eventual disposition of the asset (asset group) are compared to the carrying value of the asset (asset group). When our recoverability test results in undiscounted cash flows more than carrying value, no impairment is recorded. However, when our recoverability test results in undiscounted cash flows that are less than carrying value, we determine the fair value of the asset (asset group) and reduce the carrying amount of the asset (asset group), through an impairment charge, to its fair value. The process of identifying impairment indicators, preparing an undiscounted cash flow and determining the fair value of the asset (asset group) require management to exercise significant judgement related to various assumptions and estimates.

If we were to have impairments to goodwill or finite-lived intangible assets, it could adversely affect our operating results. During the years ended 2023 and 2022, we did not have any impairment charges related to our goodwill or finite-lived intangible assets.

Accounting for Income Taxes

We are subject to income taxes in the U.S. and numerous foreign jurisdictions. The evaluation of our uncertain tax positions involves significant judgment in the interpretation and application of U.S. GAAP and complex domestic and international tax laws related to the allocation of international taxation rights between countries. We are also required to evaluate the realizability of our deferred tax assets on an ongoing basis in accordance with U.S. GAAP, which requires the assessment of both of our historical and future performance as well as other relevant factors. Realization of our deferred tax assets is dependent on our ability to generate future taxable income which is determined based on assumptions such as estimated growth rates in revenues, gross margins, future cash flows and discount rates. The accuracy of these estimates could be affected by unforeseen events or actual results, and the sustainability of our future tax benefits is dependent upon the acceptance of these valuation estimates and assumptions by the taxing authorities.

Accounting for Legal Proceedings and Litigation

Estimates of probable losses resulting from litigation are inherently difficult to make, particularly when the matters are in early procedural stages with incomplete facts and information. The final outcome of legal proceedings is dependent on many variables difficult to predict and, therefore, the ultimate cost to entirely resolve such matters may be materially different than the amount of current estimates. Consequently, new information or changes in judgments and estimates could have a material adverse effect on our business, financial condition, and results of operations or cash flows.

Recent Accounting Pronouncements

See Note 1 “Summary of Significant Accounting Policies” of the Notes to Consolidated Financial Statements for a discussion of recent accounting pronouncements, including the expected dates of adoption and estimated effects, if any, on results of operations and financial condition, which is incorporated herein.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

In the normal course of business, we are exposed to interest rate, foreign currency exchange and inflation risks that could impact our financial position and results of operations. In addition, we are subject to the broad market risk that is created by the global market disruptions and uncertainties resulting from macroeconomic challenges, various military conflicts and consumer confidence. Further discussion on these risks may be found in Item 1A of this Annual Report on Form 10-K under the heading “Risk Factors”.

Interest Rate Risk

Changes in interest rates could impact our anticipated interest income on our cash and cash equivalents and investments in marketable securities. Our investments are fixed-rate short-term and long-term securities. Fixed-rate securities may have their fair market value adversely impacted due to a rise in interest rates, and, as a result, our future investment income may fall short of expectations or we may suffer losses in principal if forced to sell securities which have declined in market value due. As of December 31, 2023, we had approximately $43.3 million invested in available-for-sale marketable securities. An immediate 10% change in interest rates would not have a material adverse impact on our future operating results and cash flows.

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We do not enter into investments for trading or speculative purposes and have not used any derivative financial instruments to manage our interest rate risk exposure. As of December 31, 2023, we are not subject to risks from immediate interest rate increases on our unsecured revolving line of credit facility.

Currency Rate Risk

As a result of our international business activities, our financial results have been affected by factors such as changes in foreign currency exchange rates as well as economic conditions in foreign markets, and there is no assurance that exchange rate fluctuations will not harm our business in the future. We generally sell our products in the local currency of the respective countries. This provides some natural hedging because most of the subsidiaries’ operating expenses are generally denominated in their local currencies.

We enter into foreign currency forward contracts for currencies where we have exposures, primarily the Euro, British Pound, Chinese Yuan, Polish Zloty and Canadian Dollar, to minimize the short-term impact of foreign currency exchange rate fluctuations on cash and certain trade and intercompany receivables and payables.These forward contracts are not designated as hedging instruments and are generally one month in original maturity and are marked to market through earnings every period. The gains and losses on these forward contracts are intended to offset the gains and losses in the underlying foreign currency denominated monetary assets and liabilities being economically hedged. We do not enter into foreign currency forward contracts for trading or speculative purposes. As our international operations grow, we will continue to reassess our approach to managing the risks relating to fluctuations in currency rates. It is difficult to predict the impact forward contracts could have on our results of operations.

Although we will continue to monitor our exposure to currency fluctuations, and, where appropriate, may use forward contracts to minimize the effect of these fluctuations, the impact of an aggregate change of 10% in foreign currency exchange rates relative to the U.S. dollar on our results of operations and financial position could be material.

Inflation Risk

The economy has been impacted by certain macroeconomic challenges which have contributed to a rising inflationary trend that have impacted both our revenues and costs globally, and which we expect will continue into the foreseeable future. If our costs become subject to significant inflationary pressures, we may not be able to fully offset such higher costs through price increases. There can be no assurance that our results of operations and financial condition will not be materially impacted by inflation in the future.

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Item 8.Financial Statements and Supplementary Data.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Page

Report of Management on Internal Control over Financial Reporting 53

Report of Independent Registered Public Accounting Firm (PCAOB ID 238) 54

Consolidated Balance Sheets as of December 31, 2023 and 2022 58

Notes to Consolidated Financial Statements 61

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REPORT OF MANAGEMENT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Management of Align is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934. Our internal control over financial reporting is designed by, or under supervision of, our CEO and CFO, and effected by the board of directors, management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Internal control over financial reporting includes those policies and procedures that:

•pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of Align;

•provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of Align are being made only in accordance with authorizations of management and directors of Align; and

•provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of Align’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. In addition, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2023. In making this assessment, management used the criteria set forth in Internal Control-Integrated Framework(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”).

Based on our assessment, management has concluded that, as of December 31, 2023, our internal control over financial reporting was effective based on criteria in Internal Control - Integrated Framework (2013) issued by the COSO.

The effectiveness of our internal control over financial reporting as of December 31, 2023 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which is included herein.

/S/ JOSEPH M. HOGAN

Joseph M. Hogan

President and Chief Executive Officer

/S/ JOHN F. MORICI

John F. Morici

Chief Financial Officer and Executive Vice President, Global Finance

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Report of Independent Registered Public Accounting Firm

To theBoard of Directors and Stockholders of Align Technology, Inc.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Align Technology, Inc. and its subsidiaries (the “Company”) as of December 31, 2023 and 2022, and the related consolidated statements of operations, of comprehensive income, of stockholders’ equity and of cash flows for each of the three years in the period ended December 31, 2023, including the related notes and financial statement schedule listed in the index appearing under Item 15(a)(2) (collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Report of Management on Internal Control Over Financial Reporting. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

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Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Revenue Recognition – Determination of Standalone Selling Price of Distinct Performance Obligations in Clear Aligner Contracts

As described in Notes 1 and 15 to the consolidated financial statements, the Company recognized net revenues of $3.2 billion from its Clear Aligner segment for the year ended December 31, 2023. The Company enters into contracts (“treatment plans”) that involve multiple future performance obligations. Management identifies a performance obligation as distinct if both of the following criteria are met: the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract. Management allocates revenues for each treatment plan based on each unit’s standalone selling price. Management considers a variety of factors such as same or similar product historical sales, costs, and gross margin, which may vary over time depending upon the unique facts and circumstances related to each performance obligation in making these estimates. In addition to historical data, they take into consideration changing trends and market conditions. Management also considers usage rates, which is the number of times a customer is expected to order additional aligners. Management’s process for estimating usage rates requires significant judgment and evaluation of inputs, including historical usage data by region, country and channel.

The principal considerations for our determination that performing procedures related to revenue recognition and the determination of standalone selling price of distinct performance obligations in Clear Aligner contracts is a critical audit matter are the significant judgment by management in determining the estimate of standalone selling price, which includes significant assumptions related to usage rates for each distinct performance obligation. This in turn led to significant auditor judgment, subjectivity, and effort in performing procedures to evaluate management’s determination of the estimates of standalone selling price and usage rates for each distinct performance obligation.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to revenue recognition, including controls over the determination of standalone selling price for each distinct performance obligation in the Company’s Clear Aligner contracts. These procedures also included, among others, (i) testing management’s process for determining the estimate of standalone selling price, which included testing the completeness and accuracy of inputs used and evaluating the reasonableness of factors considered by management related to same or similar product historical sales and usage rates, and (ii) testing management’s process for estimating usage rates, which included evaluating the reasonableness of inputs evaluated by management related to historical usage data by region, country and channel.

/s/ PricewaterhouseCoopers LLP

San Jose, California

February 28, 2024

We have served as the Company’s auditor since 1997.

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ALIGN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

Year Ended December 31,

Operating expenses:

Interest income and other income (expense), net:

Total interest income and other income (expense), net (2,134) (43,538) 36,023

Net income per share:

Shares used in computing net income per share:

The accompanying notes are an integral part of these consolidated financial statements.

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ALIGN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

Year Ended December 31,

Other comprehensive income (loss):

The accompanying notes are an integral part of these consolidated financial statements.

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ALIGN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands, except per share data)

December 31,

ASSETS

Current assets:

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Commitments and contingencies (Notes 7 and 8)

Stockholders’ equity:

Preferred stock, $0.0001 par value (5,000 shares authorized; none issued) — —

Accumulated other comprehensive income (loss), net 21,168 (10,284)

The accompanying notes are an integral part of these consolidated financial statements.

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ALIGN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(in thousands)

Shares Amount

Net change in unrealized gains (losses) from investments — — — (495) — (495)

Net change in foreign currency translation adjustment — — — (38,680) — (38,680)

Net change in unrealized gains (losses) from investments — — — (3,130) — (3,130)

Net change in foreign currency translation adjustment — — — (11,480) — (11,480)

Net change in unrealized gains (losses) from investments — — — 3,033 — $ 3,033

Net change in foreign currency translation adjustment — — — 28,419 — $ 28,419

The accompanying notes are an integral part of these consolidated financial statements.

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ALIGN TECHNOLOGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Year Ended December 31,

CASH FLOWS FROM OPERATING ACTIVITIES:

Impairments on equity investments 4,990 — —

Arbitration award gain — — (43,403)

Changes in assets and liabilities, net of effects of acquisitions:

CASH FLOWS FROM INVESTING ACTIVITIES:

Acquisitions, net of cash acquired — (12,304) (8,002)

Proceeds from maturities of marketable securities 55,170 23,785 498

Repayment on unsecured promissory note — — 4,594

Proceeds from arbitration award — — 43,403

Purchase of equity investments (76,999) — —

CASH FLOWS FROM FINANCING ACTIVITIES:

The accompanying notes are an integral part of these consolidated financial statements.

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ALIGN TECHNOLOGY, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1. Summary of Significant Accounting Policies

Business Description

Align Technology, Inc. (“We”, “Our”, “Align”) is a global medical device company primarily engaged in the design, manufacture and marketing of Invisalign® clear aligners for the treatment of malocclusions, or the misalignment of teeth, by orthodontists and general dental practitioners (“GPs”), ViveraTM retainers for retention, iTeroTM intraoral scanners and services for dentistry, and exocadTM computer-aided design and computer-aided manufacturing (“CAD/CAM”) software for dental laboratories and dental practitioners. Our vision and strategy is to revolutionize orthodontic and restorative dentistry through digital treatment planning and implementation using our Align Digital PlatformTM, an integrated suite of proprietary technologies and services designed to deliver a seamless, end-to-end solution for patients, consumers, orthodontists, GPs and lab partners. We strive to achieve our vision and strategy through key objectives made possible with the proprietary technologies and services of the Align Digital Platform to establish: clear aligners as the principal solution for the treatment of malocclusions with the Invisalign system as the treatment solution of choice by orthodontists, GPs and patients globally, our intraoral scanners as the preferred scanning technology for digital dental scans and our exocad CAD/CAM software as the dental restorative solution of choice for dental labs. Our corporate headquarters is located in Tempe, Arizona and we have offices worldwide. Our Americas regional headquarters is located in Raleigh, North Carolina; our European, Middle East and Africa (“EMEA”) regional headquarters is located in Rotkreuz, Switzerland; and our Asia Pacific (“APAC”) regional headquarters is located in Singapore. We have two operating segments: (1) Clear Aligner, known as the Invisalign system, and (2) Imaging Systems and CAD/CAM services (“Systems and Services”), known as the iTero intraoral scanner and CAD/CAM services.

Basis of Presentation and Preparation

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, (“GAAP”) and include the accounts of Align and our wholly-owned subsidiaries after elimination of intercompany transactions and balances.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, useful lives of intangible assets and property, plant and equipment, goodwill, income taxes, contingent liabilities, deferred revenues, the fair values of financial instruments, stock-based compensation and the valuation of investments in privately held companies among others. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.

In September 2023, we completed an assessment of the useful lives of certain manufacturing equipment used in cutting, forming, assembling and scanning. We adjusted the estimated useful life from ten (10) years to thirteen (13) years. This change in accounting estimate was effective beginning September 2023. These updated useful lives were applied to applicable assets in service as of the date of change and will be applied prospectively as assets are placed in service. Based on the carrying amount of the assets recorded in our property, plant and equipment, net balance prior to the change, the effect of this change in estimate for fiscal year 2023 was a reduction in depreciation expense of approximately $5.4 million and an increase in net income of $3.7 million, or $0.05 per share basic and diluted, for the year ended December 31, 2023.

Fair Value of Financial Instruments

Fair value is an exit price, representing the amount that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. We use the GAAP fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. This hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value:

Level 1 - Quoted (unadjusted) prices in active markets for identical assets or liabilities.

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Level 2 - Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. We obtain fair values for our Level 2 investments. Our custody bank and asset managers independently use professional pricing services to gather pricing data which may include quoted market prices for identical or comparable financial instruments, or inputs other than quoted prices that are observable either directly or indirectly. We are ultimately responsible for these underlying estimates.

Level 3 - Unobservable inputs to the valuation methodology that are supported by little or no market activity and that are significant to the measurement of the fair value of the assets or liabilities. Level 3 assets and liabilities include those whose fair value measurements are determined using pricing models, discounted cash flow methodologies or similar valuation techniques, as well as significant management judgment or estimation.

Cash and Cash Equivalents

We consider cash on hand, demand deposits, time deposits, and all highly liquid investments with an original maturity of three months or less at the date of purchase to be cash and cash equivalents. Cash and cash equivalents are held in various financial institutions in the U.S. and internationally.

Restricted Cash

Restricted cash primarily consists of funds reserved for legal requirements. Restricted cash balances are primarily included in other assets within our Consolidated Balance Sheets.

Marketable Securities

Our marketable securities balance consists of marketable debt securities which are classified as available-for-sale and are carried at fair value. Our fixed-income securities investment portfolio allows for investments with a maximum effective maturity of up to 40 months on any individual security. Marketable securities classified as current assets have maturities within one year from the balance sheet date. Unrealized gains or losses on such securities are included in accumulated other comprehensive income (loss), net (“AOCI”) in stockholders’ equity. Realized gains and losses from sales and maturities of marketable securities are reported in earnings and computed using the specific identification cost method.

All of our marketable securities are subject to a periodic impairment review. We evaluate if an allowance for credit loss is necessary by considering available information relevant to the collectability of the security and information about credit rating changes, past events, current conditions, and reasonable and supportable forecasts. Any allowance for credit loss is recorded as a charge to other income (expense), net, in our Consolidated Statement of Operations. If we have an intent to sell, or if it is more likely than not that we will be required to sell the security in an unrealized loss position before recovery of its amortized cost basis, we will write down the security to its fair value and record the corresponding charge as a component of other income (expense), net in our Consolidated Statement of Operations.

Variable Interest Entities

We evaluate whether an entity in which we have made an investment is considered a variable interest entity (“VIE”). If we determine we are the primary beneficiary of a VIE, we would consolidate the VIE into our financial statements. In determining if we are the primary beneficiary, we evaluate whether we have the power to direct the activities that most significantly impact the VIE’s economic performance and the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to the VIE. Our evaluation includes identification of significant activities and an assessment of our ability to direct those activities based on governance provisions and arrangements to provide or receive product and process technology, product supply, operations services, equity funding, financing, and other applicable agreements and circumstances. Our assessment of whether we are the primary beneficiary of a VIE require management to exercise significant judgement and utilize assumptions. We have concluded that we are not the primary beneficiary of our VIE investments; therefore, we do not consolidate their results into our consolidated financial statements.

Investments in Privately Held Companies

Our investments in privately held companies in which we cannot exercise significant influence and do not own a majority equity interest or otherwise control are accounted for as an investment in equity securities. We have elected to account for all investments in equity securities in accordance with the measurement alternative. Under the measurement alternative, we record

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the value of our investments in equity securities at cost, minus impairment, if any. Additionally, we adjust the carrying value of our investments equity securities to fair value for observable transactions for identical or similar investments of the same issuer.

On April 24, 2023, we entered into a Subscription Agreement (the "Subscription Agreement") with Heartland Dental Holding Corporation (“Heartland”) who is an affiliate of KKR Core Holding Company LLC, which is an investment vehicle managed or advised by, or otherwise affiliated with, Kohlberg Kravis Roberts & Co. L.P. Heartland is a dental support organization (“DSO”) that provides nonclinical administrative and support services to supported dental professional corporations (“PCs”). Pursuant to the Subscription Agreement we acquired less than a 5% equity interest through the purchase of Class A Common Stock for $75 million. In connection with the Subscription Agreement, we entered into a Stockholders’ Agreement, by and among us, Heartland Dental Topco, LLC (“Topco”) and funds and accounts managed by affiliates of KKR & Co. Inc. (“KKR”), and a Side Letter, by and among us, Heartland, Topco and KKR (the "Side Letter"). Subject to certain restrictions set forth in the Side Letter, we agreed to provisions applicable to Heartland’s stockholders, including certain drag-along and voting obligations. We are not the primary beneficiary of nor are we able to exercise significant influence over Heartland. As such, we are accounting for our investment in Heartland as an investment in equity securities.

Similar to our other investments in equity securities, Heartland is accounted for under the measurement alternative. Based on review of our investment in Heartland, we determined that no adjustments to the carrying value were necessary; therefore, it is properly reflected on our Consolidated Balance Sheet in other assets at $75 million.

Investments in equity securities are reported on our Consolidated Balance Sheet as other assets. We record any change in carrying value of our equity securities, in other income (expense), net in our Consolidated Statement of Operations. The carrying value of our investments in equity securities, exclusive of Heartland, were not material as of December 31, 2023 or 2022 and the associated adjustments to the carrying values of the investments were not material during the year ended December 31, 2023, 2022 and 2021.

Our investments in privately held companies in which we can exercise significant influence are accounted for as equity method investments. We have elected to account for our equity method investments under the fair value option. The carrying value of our equity method investments are reported on our Consolidated Balance Sheet as other assets and are not material as of December 31, 2023 or 2022.

On September 6, 2023, we entered into a definitive agreement to acquire privately held Cubicure GmbH (“Cubicure”). The purchase price for the transaction will be approximately $87 million subject to customary closing adjustments and adjustments for Align’s existing ownership of capital stock of Cubicure. The acquisition closed on January 2,2024. Refer to Note 17 “Subsequent Events" of the Notes to Consolidated Financial Statements for further details.

Derivative Financial Instruments

We enter into foreign currency forward contracts to minimize the short-term impact of foreign currency exchange rate fluctuations associated with certain assets and liabilities. These forward contracts are not designated as hedging instruments. The gains and losses on these forward contracts are intended to offset the gains and losses in the underlying foreign currency denominated monetary assets and liabilities being economically hedged. We do not enter into foreign currency forward contracts for trading or speculative purposes. The net gain or loss from the settlement of these foreign currency forward contracts is recorded in other income (expense), net in the Consolidated Statement of Operations.

Foreign Currency

For our international subsidiaries, we analyze on an annual basis or more often, if necessary, if a significant change in facts and circumstances indicate that the functional currency of the subsidiary has changed. For international subsidiaries where the local currency is the functional currency, adjustments from translating financial statements from the local currency to the U.S. dollar reporting currency are recorded to change in foreign currency translation adjustment, net of tax in our Consolidated Statements of Comprehensive Income. This foreign currency translation adjustment reflects the translation of the balance sheet at period end exchange rates, and the income statement at the transaction date or average exchange rate in effect during the period. Foreign currency remeasurement gains and losses that are derived from monetary assets and liabilities stated in a currency other than the international subsidiaries functional currency are included in other income (expense), net. For the year ended December 31, 2023, 2022 and 2021, we had foreign currency translation net gains (losses) of $(7.0) million, $(43.8) million and $(13.3) million, respectively.

Certain Risks and Uncertainties

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We are subject to risks including, but not limited to, global and regional economic market conditions, inflation, fluctuations in foreign currency exchange rates, changes in consumer confidence and demand, increased competition, dependence on key personnel, protection and litigation of proprietary technology, shifts in taxable income between tax jurisdictions and compliance with regulations of the U.S. Food and Drug Administration (“FDA”) and similar international agencies. Further, our operations globally, particularly in prior years, have been impacted by the COVID-19 pandemic.

Our cash and investments are held primarily by five financial institutions. Financial instruments which potentially expose us to concentrations of credit risk consist primarily of cash equivalents and marketable securities. We invest excess cash primarily in money market funds, corporate bonds, asset-backed securities, municipal and U.S. government agency bonds and treasury bonds and periodically evaluate them for credit losses. Such credit losses have not been material to our financial statements.

We purchase certain inventory from sole suppliers. Additionally, we rely on a limited number of hardware manufacturers. The inability of any supplier or manufacturer to fulfill our supply requirements could materially and adversely impact our future operating results.

Accounts Receivable, net

Trade accounts receivable are recorded at the invoiced amount. Accounts receivable, net includes allowances for doubtful accounts for any potentially uncollectible amounts. We periodically assess the adequacy of the allowance for doubtful accounts by reviewing the accounts receivable on a collective basis and giving consideration to various factors including the aging of the receivables and a customers’ expected ability to pay. For specific customer accounts receivable balances, we consider known disputes and past collectability issues. In determining the amount of the allowance for doubtful accounts, we also evaluate the creditworthiness of customers, current market conditions and forecasts of future economic conditions to make any adjustments. Actual write-offs have not materially differed from the estimated allowances. No individual customer accounted for 10% or more of our accounts receivable, net balance at December 31, 2023 or 2022 nor net revenues for the year ended December 31, 2023, 2022 or 2021.

For the year ended December 31, 2023 and 2022, we entered into factoring transactions on a non-recourse basis with financial institutions to sell certain of our non-U.S. accounts receivable. We account for these transactions as sales of financial assets and include the cash proceeds as a part of our cash flows from operations in the Consolidated Statements of Cash Flows. Total accounts receivable sold under factoring arrangements was $51.2 million and $37.0 million during the year ended December 31, 2023, and 2022, respectively. Factoring fees incurred on the sales of accounts receivable were recorded in other income (expense), net in our Consolidated Statements of Operations and were not material.

Inventories

Inventories are valued at the lower of cost or net realizable value, with cost computed using standard cost which approximates actual cost on a first-in-first-out basis. Excess and obsolete inventories are determined primarily based on future demand forecasts, and write-downs of excess and obsolete inventories are recorded as a component of cost of net revenues.

Property, Plant and Equipment, net

Property, plant and equipment, net are stated at historical cost less accumulated depreciation. Depreciation expense is computed using the straight-line method over the estimated useful lives of the assets. Construction in progress is related to the construction or development of property (including land) and equipment that are not ready for their intended use and have not yet been placed in service. Upon sale or retirement, the asset’s cost and related accumulated depreciation are removed from the balance sheet and any related gains or losses are reflected in income from operations. Maintenance and repairs are expensed as incurred. Refer to Note 3 “Balance Sheet Components" of the Notes of Consolidated Financial Statements for details on estimated useful lives.

Leases - Lessee

We determine if an arrangement is or contains a lease at inception. Leases with a term of 12 months or less are not recorded on the balance sheet. Right-of-use (“ROU”) assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. A ROU asset and lease liability is recognized on the lease commencement date. The lease liability is determined based on the present value of lease payments over the lease term. We use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments as the rate implicit in our leases is not readily determinable. The ROU asset consists of the initial lease liability adjusted for lease incentives received and any initial direct costs incurred. The lease term

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represents the noncancellable period of the lease and may include options to extend the lease when it is reasonably certain that we will exercise that option. We have lease agreements with lease and non-lease components which are accounted for as a single lease component. Payments under our lease arrangements are primarily fixed; however, certain lease agreements contain variable payments which are expensed as incurred and not included in the ROU asset and lease liability balances. The short-term portion of our lease liabilities is recorded in accrued liabilities on our Consolidated Balance Sheets.

Business Combinations

We allocate the fair value of the purchase consideration to the assets acquired and liabilities assumed based on their estimated fair values at the acquisition date. When determining the fair value of assets acquired and liabilities assumed, management is required to make certain estimates and assumptions, especially with respect to determining the fair value of intangible assets. The estimates and assumptions used in valuing intangible assets include, but are not limited to, the amount and timing of projected future cash flows including forecasted revenues, the discount rate used to determine the present value of these cash flows, and the determination of the assets’ life cycle. Amounts recorded in a business combination may change during the measurement period, which is a period not to exceed one year from the date of acquisition, as additional information about conditions existing at the acquisition date becomes available.

Goodwill

Goodwill represents the excess of the purchase price paid over the fair value of tangible and identifiable intangible net assets acquired in a business combination and is allocated to the respective reporting units based on relative synergies generated.

Finite-Lived Intangible Assets

Our intangible assets primarily consist of intangible assets acquired as part of a business combination. These assets are amortized using the straight-line method over their estimated useful lives ranging from eight to ten years reflecting the period in which the economic benefits of the assets are expected to be realized.

Impairment of Goodwill and Long-Lived Assets and Finite-Lived Intangible Assets

Goodwill

We evaluate goodwill for impairment at least annually on November 30th or more frequently if indicators of impairment are identified between annual testing dates.

We perform an initial assessment of qualitative factors to determine whether the existence of events and circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit has been reduced below its carrying amount. In performing this qualitative assessment, we identify and consider the significance of relevant key factors, events, and circumstances that affect the fair value of our reporting units. These factors include external factors such as macroeconomic, industry, and market conditions, as well as entity-specific factors, such as our actual and planned financial performance. We also give consideration to the difference between the reporting unit fair value and carrying value as of the most recent date a fair value measurement was performed. If, after assessing the totality of relevant events and circumstances, we determine that it is not more likely than not that the fair value of the reporting unit is less than its carrying value, no further testing is performed; however, if we conclude otherwise, then we will perform a quantitative impairment test which compares the estimated fair value of the reporting unit to its carrying value, including goodwill. If the carrying amount of the reporting unit exceeds its fair value, an impairment loss would be recorded in our Consolidated Statements of Operations for the amount of the excess. Management is required to exercise significant judgement when identifying the relevant assumptions and estimates used in determining the fair value and carrying value of our reporting units.

Long-Lived Assets and Finite-Lived Intangible Assets

We evaluate long-lived assets (including ROU assets) and finite-lived intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. Factors we consider important which could trigger a quantitative impairment test include but are not limited to significant negative industry or economic trends, significant adverse changes in our competitive environment and a significant loss of customers. If an impairment indicator is identified, we perform a quantitative impairment analysis in which we compare the carrying value of an asset (asset group) to the future undiscounted cash flows the asset (asset group) is expected to generate. An asset (asset group) is considered impaired if its carrying amount exceeds the undiscounted cash flows. If an asset (asset group) is deemed to be impaired, the impairment to be recognized is calculated as the amount by which the carrying amount of the asset (asset group)

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exceeds its fair value. Our estimates of future cash flows attributable to our assets (asset groups) require significant judgment based on our historical and anticipated results and are subject to many assumptions.

Development Costs for Internal Use Software

Internally developed software includes enterprise-level business software that we customize to meet our specific operational needs. Such capitalized costs include external direct costs utilized in developing or obtaining the applications and payroll and payroll-related costs for employees, who are directly associated with the development of the applications. Capitalized internally developed software costs were not material as of December 31, 2023 or 2022.

Development Costs for Software to be Marketed

The costs to develop software that is marketed externally have not been capitalized as we believe our current software development process is essentially completed concurrent with the establishment of technological feasibility. As such, all related software development costs are expensed as incurred and included in research and development expense in our Consolidated Statement of Operations.

Product Warranty

We offer assurance warranties on our products which provide the customer assurance that the product will function as intended because it complies with agreed-upon specifications; therefore, our warranties are not treated as a separate revenue performance obligation in accordance with the revenue standard but rather are accounted for as guarantees.

Clear Aligner

We warrant our Invisalign products against material defects until the treatment plan is complete except in the case of retainers, which are warranted up to three months from expected first use. We accrue for warranty costs, which are primarily based on historical product failure rates as well as current information on replacement cost.

Systems and Services

We warrant our intraoral scanners for a period of one year, which includes materials and labor. We accrue for these warranty costs based on average historical repair costs. An extended warranty may be purchased for an additional fee. Sales of extended warranties are accounted for as a separate performance obligation and recorded as revenue.

We warrant our CAD/CAM software for a one year period to perform in accordance with agreed product specifications. As we have not historically incurred any material warranty costs, we do not accrue for these software warranties.

Warranty costs are recorded in cost of net revenues upon shipment of products. We regularly review our warranty liability and update these balances based on historical warranty cost trends. Actual warranty costs incurred have not materially differed from those accrued; however future actual warranty costs could differ from the estimated amounts.

Revenue Recognition

Our revenues are derived primarily from the sale of aligners, scanners, and services from our Clear Aligner and Systems and Services reportable segments. We enter into sales contracts that may consist of multiple distinct performance obligations where certain performance obligations of the sales contract are not delivered in one reporting period. We measure and allocate revenues according to ASC 606-10, “Revenues from Contracts with Customers.”

We identify a performance obligation as distinct if both of the following criteria are met: the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract. Determining the standalone selling price (“SSP”) in order to allocate consideration from the contract to the individual performance obligations is the result of various factors, such as historical prices, changing trends and market conditions, costs, and gross margins. While changes in the allocation of the SSP between performance obligations will not affect the amount of total revenues recognized for a particular contract, any material changes could impact the timing of revenue recognition, which would have a material effect on our financial position and result of operations. This is because the contract consideration is allocated to each performance obligation, delivered or undelivered, at the inception of the contract based on the SSP of each distinct performance obligation.

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Clear Aligner

We enter into contracts (“treatment plan(s)”) that involve multiple future performance obligations. Invisalign Comprehensive, Invisalign First Phase 1, Invisalign First Comprehensive Phase 2, Invisalign Adult, Invisalign Standard, Invisalign Moderate, Invisalign Go, Invisalign Go Plus, and Lite and Express Packages include optional additional aligners at no charge for a certain period of time ranging from six months to five years after initial shipment.

Our treatment plans comprise the following performance obligations that also represent distinct deliverables: initial aligners, the option of additional aligners. We take the practical expedient to consider shipping and handling costs as activities to fulfill the performance obligation. Where processing fees are charged, the consideration received from the fees are included in the total consideration. We allocate consideration for each treatment plan based on each unit’s standalone selling price. Management considers a variety of factors such as same or similar product historical sales, costs, and gross margin, which may vary over time depending upon the unique facts and circumstances related to each performance obligation in making these estimates. In addition to historical data, we take into consideration changing trends and market conditions. For treatment plans with multiple future options, we also consider usage rates, which is the number of times a customer is expected to order additional aligners. Our process for estimating usage rates requires significant judgment and evaluation of inputs, including historical usage data by region, country and channel. We recognize the revenues upon shipment, as the customers obtain physical possession and we have enforceable rights to payment. As we collect most consideration upfront, we consider whether a significant financing component exists; however, as the delivery of the performance obligations are at the customer’s discretion, we conclude that no significant financing component exists.

Systems and Services

We sell intraoral scanners and CAD/CAM services through both our direct sales force and distribution partners. The intraoral scanner sales price includes one year of warranty and unlimited scanning services. The customer may also select, for additional fees, extended warranty and unlimited scanning services for periods beyond the initial year. When intraoral scanners are sold with an unlimited scanning service agreement and/or extended warranty, we allocate revenues based on the respective SSP of the scanner and the subscription service. We estimate the SSP of each element, taking into account factors such as same or similar historical prices and discounting strategies. Revenues are then recognized over time as the monthly services are rendered and upon shipment of the scanner, as that is when we deem the customer to have obtained control. We also have a rental program, where scanners are leased to customers. The contracts for the program are treated as operating leases, and the revenue is recognized ratably over the lease term.

CAD/CAM services, where sold separately, include the initial software license and maintenance and support. We allocate revenues based upon the respective SSPs of the software license and the maintenance and support. We estimate the SSP of each element using data such as historical prices. Revenues related to the software license are recognized upfront and revenues related to the maintenance and support are recognized over time. For both scanner and service sales, most consideration is collected upfront and in cases where there are payment plans, consideration is collected within one year and, therefore, there are no significant financing components.

Volume Discounts

In certain situations, we offer promotions in which the discount will increase depending upon the volume purchased over time. We concluded that in these situations, the promotions can represent either variable consideration or options, depending upon the specifics of the promotion. In the event the promotion contains an option, the option is considered a material right and, therefore, included in the accounting for the initial arrangement. We estimate the average anticipated discount over the lifetime of the promotion or contract, and apply that discount to each unit as it is sold. On a quarterly basis, we review our estimates and, if needed, updates are made and changes are applied prospectively.

Accrued Sales Return Reserve

We provide a reserve for sales returns based on historical sales returns as a percentage of revenues.

Costs to Obtain a Contract

We offer a variety of commission plans to our salesforce; each plan has multiple components. To match the costs to obtain a contract to the associated revenues, we evaluate the individual components and capitalize the eligible components, recognizing the costs over the treatment period. The capitalized costs to obtain contracts were $25.1 million and $27.4 million as of December 31, 2023 and 2022, respectively, and are included in other assets in our Consolidated Balance Sheets. We

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recognized amortization on our costs to obtain a contract of $12.5 million, $20.8 million, and $17.0 million during the year ended December 31, 2023, 2022, and 2021, respectively, which is included in selling, general and administrative expenses in our Consolidated Statements of Operations.

Unfulfilled Performance Obligations for Clear Aligners and Scanners

Our unfulfilled performance obligations, including deferred revenues and backlog, and the estimated revenues expected to be recognized in the future related to these performance obligations are $1,578.3 million and $1,515.4 million as of December 31, 2023 and 2022, respectively. This includes performance obligations from the Clear Aligner reportable segment, primarily the shipment of additional aligners, which are fulfilled over six months to five years. This also includes performance obligations from our Systems and Services reportable segment, primarily services and support, which are fulfilled over one to five years, and contracted deliveries of additional scanners. The estimate includes both product and service unfulfilled performance obligations and the time range reflects our best estimate of when we will transfer control to the customer and may change based on customer usage patterns, timing of shipments, readiness of customers' facilities for installation, and manufacturing availability.

Contract Balances

The timing of revenue recognition results in deferred revenues being recognized on our Consolidated Balance Sheet. For both aligners and scanners, we usually collect the total consideration owed prior to all performance obligations being satisfied with payment terms generally varying from net 30 to net 180 days. Contract liabilities are recorded as deferred revenue, which is generated based upon the timing of invoices and recognition patterns, not payments. If the revenue recognition exceeds the billing, the excess amount is considered an unbilled receivable or a contract asset. Conversely, if the billing occurs prior to the revenue recognition, the amount is considered deferred revenue and a contract liability.

Shipping and Handling Costs

Shipping and handling charges to customers as well as processing fees are included in net revenues, and the associated costs incurred are recorded in cost of net revenues.

Legal Proceedings and Litigation

We are involved in legal proceedings on an ongoing basis. If we believe that a loss arising from such matters is probable and can be reasonably estimated, we accrue the estimated loss in our consolidated financial statements. If only a range of estimated losses can be determined, we accrue an amount within the range that, in our judgment, reflects the most likely outcome; if none of the estimates within that range is a better estimate than any other amount, we accrue the low end of the range.

Investment in SmileDirectClub, LLC (“SDC”)

After tendering of our SDC equity interest in 2019, on July 3, 2019, we filed a demand for arbitration regarding SDC’s calculation of the “capital account” balance. On March 12, 2021, the arbitrator ruled in our favor and against SDC and issued an award of $43.4 million along with interest. The gain of $43.4 million was recognized as a part of our other income (expense), net in our Consolidated Statement of Operation during the year ended December 31, 2021.

Research and Development

Research and development costs are expensed as incurred and include costs associated with the research and development of new products and enhancements to existing products. These costs primarily include personnel-related costs, including payroll and stock-based compensation, equipment, material and maintenance costs, outside consulting expenses, depreciation and amortization expense and allocations of corporate overhead expenses including facilities and information technology (“IT”).

Advertising Costs

The cost of advertising and media is expensed as incurred. For the year ended December 31, 2023, 2022 and 2021, we incurred advertising costs of $201.2 million, $222.0 million and $325.6 million, respectively.

Stock-Based Compensation

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We recognize stock-based compensation cost for shares expected to vest on a straight-line basis over the requisite service period of the award, net of estimated forfeitures. We use the Black-Scholes option pricing model to determine the fair value of employee stock purchase plan shares. We use a Monte Carlo simulation model to estimate the fair value of market based restricted stock units which requires the input of assumptions, including expected term, stock price volatility and the risk-free rate of return. For restricted stock units which vest based on performance conditions, we use the stock price on the grant date to estimate the fair value and stock-based compensation cost is recorded based on expected attainment of performance targets. Forfeitures are estimated based on historical experience at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.

Income Taxes

We make certain estimates and judgments in determining income tax expense for financial statement purposes. These estimates and judgments occur in the calculation of certain tax assets and liabilities, which arise from differences in the timing of recognition of revenues and expenses for tax and financial statement purposes.

As part of the process of preparing our consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves us estimating our current tax exposure under the applicable tax laws and assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These differences result in deferred tax assets and liabilities which are included in our Consolidated Balance Sheets.

We account for uncertainty in income taxes pursuant to authoritative guidance based on a two-step approach to recognize and measure uncertain tax positions taken or expected to be taken in a tax return. The first step is to determine if the weight of available evidence indicates that it is more likely than not that the tax position will be sustained on audit based on its technical merits, including resolution of any related appeals or litigation processes. The second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement. We adjust reserves for our uncertain tax positions due to changing facts and circumstances, such as the closing of a tax audit or refinement of estimates due to new information. To the extent that the final outcome of these matters is different than the amounts recorded, such differences will impact our tax provision in our Consolidated Statement of Operations in the period in which such determination is made.

We assess the likelihood that we will be able to realize our deferred tax assets. Should there be a change in our ability to realize our deferred tax assets, our tax provision would increase in the period in which we determine that it is more likely than not that we cannot realize our deferred tax assets. We consider all available evidence, both positive and negative, including historical levels of income, expectations and risks associated with estimates of future taxable income and ongoing prudent and feasible tax planning strategies in assessing the need for a valuation allowance. If it is more likely than not that we will not realize our deferred tax assets, we will increase our provision for taxes by recording a valuation allowance against the deferred tax assets that we estimate will not ultimately be realizable.

Common Stock Repurchase

We repurchase our own common stock from time to time under stock repurchase programs approved by our Board of Directors. We account for these repurchases under the accounting guidance for equity where we allocate the total repurchase value that is in excess of par value between additional paid-in capital and retained earnings. All shares repurchased are retired.

Recent Accounting Pronouncements

(i) New Accounting Updates Recently Adopted

In October 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2021-08, “Business Combinations (Topic 805) Accounting for Contract Assets and Contract Liabilities from Contracts with Customers,” which requires contract assets and contract liabilities acquired in a business combination to be recognized and measured in accordance with ASC 606, Revenue from Contracts with Customers as if the acquirer had originated the contracts. The updated guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2022 on a prospective basis and early adoption is permitted. We early adopted this standard during 2022 which did not have a material impact on our consolidated financial statements and related disclosures.

(ii) Recent Accounting Pronouncements Not Yet Effective

On November 27, 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures.” The amendments in this update improve reportable segment disclosure requirements, primarily through enhanced disclosures about

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significant segment expenses. For public business entities, the provisions of ASU 2023-07 are effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. Companies must apply the guidance retrospectively to all prior periods presented in the financial statements. The Company is evaluating the effect of this pronouncement on its annual consolidated financial statements.

On December 14, 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures.” The amendments in this ASU require a public entity to disclose in tabular format, using both percentages and reporting currency amounts, specific categories in the rate reconciliation and to provide additional information for reconciling items that meet a quantitative threshold. The amendments in this ASU also require taxes paid (net of refunds received) to be disaggregated by federal, state, and foreign taxes and further disaggregated for specific jurisdictions to the extent the related amounts exceed a quantitative threshold. For public business entities, the provisions of ASU 2023-09 are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is evaluating the effect of this pronouncement on its annual consolidated financial statements.

Note 2. Financial Instruments

Cash, Cash Equivalents and Marketable Securities

The following tables summarize our cash and cash equivalents, and marketable securities recorded in our Consolidated Balance Sheets as of December 31, 2023 and 2022 (in thousands):

Reported as:

Reported as:

The following tables summarizes the fair value of our available-for-sale marketable securities classified by contractual maturity as of December 31, 2023 and 2022 (in thousands):

December 31,

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The securities that we invest in are generally deemed to be low risk based on their credit ratings from the major rating agencies. The longer the duration of these securities, the more susceptible they are to changes in market interest rates and bond yields. As interest rates increase, those securities purchased at a lower yield show a mark-to-market unrealized loss. Our unrealized losses as of December 31, 2023 and 2022 are primarily due to changes in interest rates and credit spreads.

The following tables summarize the gross unrealized losses as of December 31, 2023 and 2022, aggregated by investment category and length of time that individual securities have been in a continuous loss position (in thousands):

Less than 12 months 12 Months or Greater Total

Less than 12 months 12 Months or Greater Total

Fair Value Measurements

The following tables summarize our financial assets measured at fair value and categorized by fair value hierarchy as of December 31, 2023 and 2022 (in thousands):

Description Balance as of December 31, 2023 Level 1 Level 2

Cash equivalents:

Short-term investments:

U.S. government agency bonds 5,181 — 5,181

Asset-backed securities 719 — 719

Long-term investments:

U.S. government treasury bonds 4,756 — 4,756

Asset-backed securities 698 — 698

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Description Balance as of December 31, 2022 Level 1 Level 2

Cash equivalents:

Short-term investments:

Long-term investments:

U.S. government treasury bonds 4,606 4,606 —

U.S. government agency bonds 5,163 — 5,163

We had no financial assets that were categorized as level 3 in the fair value hierarchy for the year ended December 31, 2023 or 2022.

Derivatives Not Designated as Hedging Instruments

Recurring foreign currency forward contracts

We enter into foreign currency forward contracts to minimize the short-term impact of foreign currency exchange rate fluctuations on certain assets and liabilities. These forward contracts are classified within Level 2 of the fair value hierarchy. As a result of the settlement of foreign currency forward contracts, we recognized a net loss of $15.9 million during the year ended December 31, 2023. The net gain recognized during the year ended 2022 was not material and we recognized a net gain of $18.8 million during the year ended December 31, 2021. As of December 31, 2023 and 2022, the fair value of foreign exchange forward contracts outstanding was not material.

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The following tables present the gross notional value of all our foreign exchange forward contracts outstanding as of December 31, 2023 and 2022 (in thousands):

Local Currency Amount Notional Contract Amount (USD)

Local Currency Amount Notional Contract Amount (USD)

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Note 3. Balance Sheet Components

Inventories consist of the following (in thousands):

December 31,

Prepaid expenses and other current assets consist of the following (in thousands):

December 31,

Total prepaid expenses and other current assets $ 273,550 $ 226,370

Property, plant and equipment, net consist of the following (in thousands):

December 31,

Generally Used Estimated Useful Life 2023 2022

Clinical and manufacturing equipment Up to 13 years $ 703,805 $ 583,776

Less: Accumulated depreciation and impairment charges (550,762) (449,726)

1Shorter of the remaining lease term or the estimated useful lives of the assets

Depreciation was $126.0 million, $109.8 million and $92.1 million for the year ended December 31, 2023, 2022 and 2021, respectively.

Accrued liabilities consist of the following (in thousands):

December 31,

Accrued property, plant and equipment 23,618 19,922

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Accrued warranty as of December 31, 2023 and 2022, which is included in the “Other accrued liabilities” category in the accrued liabilities table above, consists of the following activity (in thousands):

Charged to cost of net revenues 16,429

Actual warranty expenditures (14,725)

Charged to cost of net revenues 18,248

Actual warranty expenditures (13,695)

Deferred revenues consist of the following (in thousands):

December 31,

1Included in Other long-term liabilities within our Consolidated Balance Sheets

During the year ended December 31, 2023 and 2022, we recognized $3,862.3 million and $3,734.6 million of net revenues, respectively, of which $732.4 million and $635.3 million was included in the deferred revenues balance at December 31, 2022 and December 31, 2021, respectively.

Note 4. Leases

Lessee Information

We have operating leases for our digital treatment planning and office facilities, retail spaces, vehicles and office equipment. The components of lease expenses consist of following (in thousands):

Year Ended December 31,

1Includes expense associated with short term leases of less than 12 months which is not material

2Includes payments related to agreements with embedded leases that are not otherwise reflected on the balance sheet. These costs are primarily associated with our manufacturing supply arrangements and fluctuate based on factory output and material price changes.

The following table provides a summary of our operating lease terms and discount rates:

December 31,

Remaining Lease Term and Discount Rate 2023 2022

Weighted average remaining lease term (in years) 6.2 7.2

Weighted average discount rate 3.7 % 3.5 %

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As of December 31, 2023, the future payments related to our operating lease liabilities are as follows (in thousands):

Fiscal Year Ending December 31, Operating Leases

Less: Imputed interest (13,629)

Total lease liabilities $ 126,619

As of December 31, 2023, we had additional leases that have not yet commenced with future lease payments of $13.3 million. These leases will commence during 2024 with non-cancelable lease terms of two to five years.

Lessor Information

We lease iTero intraoral scanners to customers which are classified as operating leases. Our portfolio of leased iTero scanners included in Property, plant and equipment, net are as follows:

December 31,

Scanners under operating leases, gross $ 27,145 $ 22,914

Less: accumulated depreciation (9,815) (3,919)

Scanners under operating leases, net $ 17,330 $ 18,995

As of December 31, 2023, the future lease payments due to us are as follows (in thousands):

Fiscal Year Ending December 31, Operating Leases

Total lease payments $ 49,815

For the year ended December 31, 2023 and 2022, operating lease income was $16.6 million and $12.3 million, respectively and for the year ended December 31, 2021, operating lease income was not material. Operating lease income is recorded in net revenues in our Consolidated Statements of Operations.

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Note 5. Goodwill and Intangible Assets

During the year ended December 31, 2022, we completed an immaterial business combination which increased goodwill and existing technology intangible assets.

Goodwill

The change in the carrying value of goodwill for the year ended December 31, 2023 and 2022, categorized by reportable segment, is as follows (in thousands):

Clear Aligner Systems and Services Total

We completed our annual goodwill impairment assessments in 2023 and 2022 and determined there were no impairments.

Finite-Lived Intangible Assets

Acquired finite lived intangible assets were as follows, excluding intangible assets that were fully amortized (in thousands):

Foreign currency translation adjustments 987

Total intangible assets, net 1 $ 82,118

1 Also includes $34.3 million of fully amortized intangible assets related to customer relationships.

Foreign currency translation adjustments (1,912)

Total intangible assets, net 1 $ 95,720

1 Also includes $33.5 million of fully amortized intangible assets related to customer relationships.

For the year ended December 31, 2023 and 2022, we did not identify any impairment triggering events that would indicate that the carrying value of our finite-lived intangible assets was not recoverable.

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The total estimated annual future amortization expense for these acquired intangible assets as of December 31, 2023 is as follows (in thousands):

Fiscal Year Amortization

Amortization expense was $16.4 million, $16.0 million and $16.6 million for the year ended December 31, 2023, 2022 and 2021, respectively.

Note 6. Credit Facility

We have a credit facility that provides for a $300.0 million unsecured revolving line of credit, along with a $50.0 million letter of credit. On December 23, 2022, we amended certain provisions in our credit facility which included extending the maturity date on the facility to December 23, 2027 and replacing the interest rate from the existing LIBOR with SOFR (“2022 Credit Facility”). The 2022 Credit Facility requires us to comply with specific financial conditions and performance requirements. Loans under the 2022 Credit Facility bear interest, at our option, at either a rate based on the SOFR for the applicable interest period or a base rate, in each case plus a margin. As of December 31, 2023, we had no outstanding borrowings under the 2022 Credit Facility and were in compliance with the conditions and performance requirements in all material respects.

Note 7. Legal Proceedings

2019 Shareholder Derivative Lawsuit

In January 2019, three derivative lawsuits were filed in the U.S. District Court for the Northern District of California which were later consolidated, purportedly on our behalf, naming as defendants the then current members of our Board of Directors along with certain of our executive officers. The complaints assert various state law causes of action, including for breaches of fiduciary duty, insider trading, and unjust enrichment. The complaints seek unspecified monetary damages on our behalf, which is named solely as a nominal defendant against whom no recovery is sought, as well as disgorgement and the costs and expenses associated with the litigation, including attorneys’ fees. The consolidated action is currently stayed. Defendants have not yet responded to the complaints.

On April 12, 2019, a derivative lawsuit was also filed in California Superior Court for Santa Clara County, purportedly on our behalf, naming as defendants the members of our Board of Directors along with certain of our executive officers. The allegations in the complaint are similar to those in the derivative suits described above. The matter is currently stayed. Defendants have not yet responded to the complaint.

We believe these claims are without merit. We are currently unable to predict the outcome of these lawsuits and therefore cannot determine the likelihood of loss nor estimate a range of possible loss.

Antitrust Class Actions

On June 5, 2020, a dental practice named Simon and Simon, PC doing business as City Smiles brought an antitrust action in the U.S. District Court for the Northern District of California on behalf of itself and a putative class of similarly situated practices seeking treble monetary damages, interest, costs, attorneys’ fees, and injunctive relief relating to our alleged market activities in alleged clear aligner and intraoral scanner markets. Plaintiff filed an amended complaint and added VIP Dental Spas as a plaintiff on August 14, 2020. On December 18, 2023, the court certified a class of persons or entities that purchased Invisalign directly from Align between January 1, 2019 and March 31, 2022. We filed a petition with the Ninth Circuit seeking to appeal the certification ruling. The court denied Plaintiffs’ motion to certify a class of purchasers of scanners. On February 21, 2024, the court granted Align’s motion for summary judgment on all claims brought by the plaintiffs.

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On May 3, 2021, an individual named Misty Snow brought an antitrust action in the U.S. District Court for the Northern District of California on behalf of herself and a putative class of similarly situated individuals seeking treble monetary damages, interest, costs, attorneys’ fees, and injunctive relief relating to our alleged market activities in alleged clear aligner and intraoral scanner markets based on Section 2 of the Sherman Act. Plaintiffs have filed several amended complaints adding new plaintiffs, various state law claims, and allegations based on Section 1 of the Sherman Act. On November 29, 2023, the court certified a class of indirect purchasers of Invisalign between July 1, 2018 and December 31, 2023 and a class of indirect purchasers of Invisalign seeking injunctive relief. We filed a petition with the Ninth Circuit seeking to appeal this ruling under Rule 23(f) of the Federal Rules of Civil Procedure. On February 21, 2024, the court granted Align’s motion for summary judgment on the claims related to Section 2 allegations. A jury trial is scheduled to begin in this matter on January 21, 2025 for issues related to Section 1 allegations. We believe the plaintiffs’ claims are without merit and we intend to vigorously defend ourselves.

We are currently unable to predict the outcome of these lawsuits and therefore we cannot determine the likelihood of loss, if any, nor estimate a range of possible loss.

SDC Dispute

On August 27, 2020, we initiated a confidential arbitration proceeding against SmileDirectClub LLC (“SDC”) before the American Arbitration Association in San Jose, California. This arbitration relates to the Strategic Supply Agreement (“Supply Agreement”) entered into between the parties in 2016. The complaint alleges that SDC breached the Supply Agreement’s terms, causing damages to us in an amount to be determined. On January 19, 2021, SDC filed a counterclaim alleging that we breached the Supply Agreement. On May 3, 2022, SDC filed an additional counterclaim alleging that we breached the Supply Agreement. We denied SDC's allegations in the counterclaims.

On October 27, 2022, the arbitrator issued an interim award on our claims and SDC’s first counterclaim finding that SDC breached the Supply Agreement, we did not breach the Supply Agreement, and SDC caused harm to us. Based on these findings, the arbitrator awarded us an interim award of $63 million in damages.

On May 18, 2023, the arbitrator issued a final award on SDC’s second counterclaim, finding that Align did not breach the Supply Agreement. The final award subsumed the interim award on our claims and SDC’s first counterclaim and concluded the Supply Agreement arbitration proceedings.

On March 6, 2023, Align filed a petition to confirm the arbitrator’s interim award in the Superior Court for Santa Clara County.

On May 30, 2023, Align filed a petition to confirm the final award in the Superior Court of Santa Clara County. On August 21, 2023, the Superior Court issued an order confirming the Interim and Final Awards. On September 8, 2023, the Superior Court entered judgment in Align’s favor for $63 million in damages.

On September 29, 2023, SDC and certain affiliates filed bankruptcy petitions under chapter 11 of title 11 of the United States Code in the United States Bankruptcy Court for the Southern District of Texas. On January 26, 2024, SDC’s bankruptcy cases were converted from cases under chapter 11 of the Bankruptcy Code to cases under chapter 7 of the Bankruptcy Code. In conjunction therewith, Allison D. Byman was appointed as the chapter 7 trustee in SDC’s bankruptcy cases. The extent to which Align will be able to collect any or all of its $63 million judgment through SDC’s bankruptcy proceedings is unknown.

In addition to the above, in the ordinary course of our operations, we are involved in a variety of claims, suits, investigations, and proceedings, including actions with respect to intellectual property claims, patent infringement claims, government investigations, labor and employment claims, breach of contract claims, tax, and other matters. Regardless of the outcome, these proceedings can have an adverse impact on us because of defense costs, diversion of management resources, and other factors. Although the results of complex legal proceedings are difficult to predict and our view of these matters may change in the future as litigation and events related thereto unfold; we currently do not believe that these matters, individually or in the aggregate, will materially affect our financial position, results of operations or cash flows.

Note 8. Commitments and Contingencies

Tax Matter

During the quarter ended September 30, 2023, the Company received a notice and initial assessment, in the amount of approximately $27 million, from His Majesty’s Revenue and Customs (“HMRC”) for unpaid value added tax (“VAT”) related to certain clear aligner sales made during the period of June 2022 through May 2023. We are required to pay this initial

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assessment prior to contesting or litigating the assessment in administrative and judicial proceedings. The Company has historically asserted and continues to assert that doctor prescribed clear aligners sold by dentists for the orthodontic treatment of patient malocclusions are exempt from VAT, that the Company has reasonably relied upon statements and guidance by HMRC and that the Company’s interpretation of United Kingdom legislation is appropriate. However, it is not possible at this stage to accurately evaluate the likelihood of an unfavorable outcome of any legal challenges brought by the Company against HMRC disputing this initial assessment and any assessments for other past periods, if any. Accordingly, the Company has determined that a potential loss related to unpaid VAT is not probable. As such, we have not recorded a contingent loss for the initial assessment in our Condensed Consolidated Statements of Operations for the year ended December 31, 2023. The Company acknowledges that this matter poses risks of litigation and the ultimate resolution of this matter could result in an unfavorable ruling, which consequently could lead to a significant loss to the Company. As of December 31, 2023, if an unfavorable ruling is issued, we estimate a potential exposure up to approximately $100 million, excluding interest and penalties.

Indemnification Provisions

In the normal course of business to facilitate transactions in our services and products, we indemnify certain parties: customers, vendors, lessors, and other parties with respect to certain matters, including, but not limited to, services to be provided by us and intellectual property infringement claims made by third parties. In addition, we have entered into indemnification agreements with our directors and our executive officers that will require us, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers. Several of these agreements limit the time within which an indemnification claim can be made and the amount of the claim.

It is not possible to make a reasonable estimate of the maximum potential amount under these indemnification agreements due to the unique facts and circumstances involved in each particular agreement. Additionally, we have a limited history of prior indemnification claims and the payments we have made under such agreements have not had a material adverse effect on our results of operations, cash flows or financial position. However, to the extent that valid indemnification claims arise in the future, future payments by us could be significant and could have a material adverse effect on our results of operations or cash flows in a particular period. As of December 31, 2023, we did not have any material indemnification claims that were probable or reasonably possible.

Note 9. Stockholders’ Equity

Common Stock

The holders of common stock are entitled to receive dividends whenever funds are legally available and when and if declared by the Company’s Board of Directors. We have not historically declared or paid dividends on our common stock.

Stock-Based Compensation Plans

Our 2005 Incentive Plan, as amended, provides for the granting of incentive stock options, non-statutory stock options, restricted stock, stock appreciation rights, performance units and performance shares to employees, non-employee directors and consultants. Shares granted on or after May 16, 2013 as an award of restricted stock, restricted stock units, performance shares or performance units (“full value awards”) are counted against the authorized share reserve as one and nine-tenths (19/10) shares for every one (1) share subject to the award, and any shares canceled that were counted as one and nine-tenths against the plan reserve will be returned at the same ratio.

As of December 31, 2023, the 2005 Incentive Plan, as amended, has a total reserve of 32,168,895 shares for issuance of which 4,796,559 shares are available for issuance. We issue new shares from our pool of authorized but unissued shares to satisfy the exercise and vesting obligations of our stock-based compensation plans.

Summary of Stock-Based Compensation Expense