Certain statements in this Quarterly Report on Form 10-Q of Onto Innovation are forward-looking statements, including those concerning anticipated effects of, and future actions to be taken in response to, the COVID-19 pandemic, our business momentum and future growth, acceptance of our products and services, our ability to deliver both products and services consistent with our customers' demands and expectations and to strengthen our market position, our expectations of the semiconductor market outlook, future revenue, gross profits, research and development and engineering expenses, selling, general and administrative expenses, product introductions, technology development, manufacturing practices, cash requirements, our dependence on certain significant customers and anticipated trends and developments in and management plans for our business and the markets in which we operate, our anticipated revenue as a result of acquisitions, and our ability to be successful in managing our cost structure and cash expenditures and results of litigation. The statements contained in this Quarterly Report on



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Form 10-Q that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by words such as, but not limited to, "anticipate," "believe," "continue," "estimate," "expect," "intend," "plan," "should," "may," "could," "will," "would," "forecast," "project" and words or phrases of similar meaning, as they relate to our management or us.

The forward-looking statements contained herein reflect our expectations with respect to future events and are subject to certain risks, uncertainties and assumptions. Actual results may differ materially from those included in such forward-looking statements for a number of reasons including, but not limited to, the following: effects of the COVID-19 pandemic and the measures being taken to limit the spread of COVID-19, including impact on demand for our products, reductions in production levels, R&D activities, and qualification activities with our customers, increased costs, disruptions to our supply chain and a decrease in availability under our credit agreement; variations in the level of orders which can be affected by general economic conditions; seasonality and growth rates in the semiconductor manufacturing industry and in the markets served by our customers; the global economic and political climates; difficulties or delays in product functionality or performance; the delivery performance of sole source vendors; the timing of future product releases; failure to respond adequately to either changes in technology or customer preferences; changes in pricing by us or our competitors; our ability to manage growth; changes in management; risk of nonpayment of accounts receivable; changes in budgeted costs; our ability to leverage our resources to improve our position in our core markets, to weather difficult economic environments, to open new market opportunities and to target high-margin markets; the strength/weakness of the back-end and/or front-end semiconductor market segments; the imposition of tariffs or trade restrictions and costs, burdens and restrictions associated with other governmental actions; the ability to successfully integrate the businesses of Rudolph and Nanometrics promptly and effectively and to achieve the anticipated synergies and value-creation contemplated by the Merger within the expected time frame; unanticipated difficulties or expenditures relating to the Merger and integration of the Rudolph and Nanometrics businesses; the response of business partners and retention as a result of the Merger; the diversion of management time in connection with the integration; the effect of litigation related to the Merger; and the "Risk Factors" set forth in Item 1A of the Company's Annual Report on Form 10-K for the year ended December 31, 2019 (the "2019 Form 10-K") and in Part II, Item 1A of this Quarterly Report on Form 10-Q. You should carefully review the cautionary statements and "Risk Factors" contained in the 2019 Form 10-K and in this report. You should also review any additional disclosures and cautionary statements and "Risk Factors" we include from time to time in our quarterly reports on Form 10-Q, current reports on Form 8-K and other filings we make with the Securities and Exchange Commission (the "SEC"). The forward-looking statements reflect our position as of the date of this report and we undertake no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

On October 25, 2019, Onto Innovation Inc. (the "Company" or "Onto Innovation," formerly known as Nanometrics Incorporated ("Nanometrics")) consummated its previously announced merger (the "Merger") with Rudolph Technologies, Inc. ("Rudolph"). Onto Innovation accounts for the Merger as a reverse acquisition using the acquisition method of accounting in accordance with generally accepted accounting principles, with Rudolph being treated as the acquiring entity for accounting purposes. Because Rudolph is treated as the accounting acquirer in the Merger, the financial statements filed with this Quarterly Report on Form 10-Q include the financial results of Rudolph for all periods presented and the financial results of the former Nanometrics for the periods on or after October 26, 2019. As used in this report, unless the context suggests otherwise, the terms "we," "us" or "our" refer to (i) Rudolph and its consolidated subsidiaries for periods through October 25, 2019 and (ii) Onto Innovation and its consolidated subsidiaries for periods on or after October 26, 2019. The terms the "Company" and "Onto Innovation" refer to the combined company following the consummation of the Merger.

Impact of COVID-19 on our Business

The spread of COVID-19 during the first quarter of 2020 has caused an economic downturn on a global scale, as well as significant volatility in the financial markets. In March 2020, the World Health Organization declared the outbreak of COVID-19 a pandemic. As of May 5, 2020, our operations have been impacted by our pandemic response, as described below, and the global nature of our workforce and our operations, but we have not experienced significant financial impact directly related to the pandemic.

We have prioritized the health and safety of our employees and customers in our pandemic response. As governmental authorities implement restrictions on commercial operations, we have continued to ensure compliance with these directives while also maintaining business continuity for our essential operations. We have a global workforce. Although our manufacturing is conducted solely in the U.S., we maintain offices in the United States, South Korea, Japan, Taiwan, China, Singapore and Europe. Our operations at these offices are subject to various governmental directives and, as a result thereof, we have instituted a work-from-home policy for these employees to the extent practical. Where our essential employees are required to continue to report to work to perform their responsibilities, we have implemented staggered shifts or otherwise adjusted work schedules to maximize our operating capacity while adhering to applicable restrictions, including recommending distancing between persons. We have



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also provided our essential employees with appropriate protective equipment and have enhanced and increased cleanings at our facilities. At this time, we have not experienced any reduction in productivity, though we have incurred certain costs related to the implementation of these policies and practices. We may take further actions that we determine to be in the best interests of our employees or as may be required by federal, state, or local authorities.

We cannot at this time predict the impact that the COVID-19 pandemic will have on our financial condition and operations, although we are continuing to monitor our supply chain and orders from customers for COVID-19-related changes. In this time of uncertainty as a result of the COVID-19 pandemic, we are continuing to serve our customers while taking every precaution to provide a safe work environment for our employees and customers.

To date the coronavirus pandemic has disrupted the way that we conduct business, but has not had a material adverse impact on our operations. However, the extent of the pandemic's effect on our operational and financial performance will depend in large part on future developments, which cannot be predicted with confidence at this time. Future developments include the duration, scope and severity of the pandemic, the actions taken to contain or mitigate its impact, such as the extent of restrictions on gatherings and travel, the impact on governmental programs and budgets, the development of treatments or vaccines, and the resumption of widespread economic activity. Although the inherent uncertainty of the unprecedented and rapidly evolving crisis makes it difficult to predict with any confidence the likely impact on our future operations, the COVID-19 pandemic could have a material adverse impact on our consolidated business, results of operations and financial condition. For a discussion of certain COVID-19-related risks, see Part II, Item 1A - Risk Factors of this Form 10-Q.

Critical Accounting Policies

The preparation of condensed consolidated financial statements and related disclosures in conformity with accounting principles generally accepted in the United States ("U.S. GAAP") requires management to make judgments, assumptions and estimates that affect the amounts reported. Certain of these significant accounting policies are considered to be critical accounting policies, as defined below.

A critical accounting policy is defined as one that is both material to the presentation of our condensed consolidated financial statements and requires management to make difficult, subjective or complex judgments that could have a material effect on our financial condition or results of operations. Specifically, these policies have the following attributes: (1) we are required to make judgments and assumptions about matters that are highly uncertain at the time of the estimate; and (2) different estimates we could reasonably have used, or changes in the estimate that are reasonably likely to occur, could have a material effect on our financial position and results of operations.

Estimates and assumptions about future events and their effects cannot be determined with certainty. We base our estimates on historical experience and on various other assumptions believed to be applicable and reasonable under the circumstances. These estimates may change as new events occur, as additional information is obtained and as our operating environment changes. In addition, management is periodically faced with uncertainties, the outcomes of which are not within our control and will not be known for prolonged periods of time. Certain of these uncertainties are discussed in our 2019 Form 10-K in the Items entitled "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations." Based on a critical assessment of our accounting policies and the underlying judgments and uncertainties affecting the application of those policies, we believe that our condensed consolidated financial statements are fairly stated in accordance with U.S. GAAP and provide a fair presentation of our financial position and results of operations.

For more information, please see our critical accounting policies as previously disclosed in our 2019 Form 10-K.

Overview

We are a worldwide leader in the design, development, manufacture and support of process control tools that perform macro-defect inspection and metrology, lithography systems, and process control analytical software used by semiconductor and advanced packaging device manufacturers. We deliver comprehensive solutions throughout the semiconductor fabrication process with our families of proprietary products that provide critical yield-enhancing information, enabling microelectronic device manufacturers to drive down costs and time to market of their devices. We provide process and yield management solutions used in both wafer processing facilities, often referred to as "front-end" and device packaging and test facilities, or "back-end" manufacturing, through a portfolio of standalone systems for macro-defect inspection, lithography, probe card test and analysis, and transparent and opaque thin film measurements. All of our systems feature sophisticated software and production-worthy automation. In addition, our advanced process control software portfolio includes powerful solutions for standalone tools, groups of tools, or factory-wide suites to enhance productivity and achieve significant cost savings. Our systems are backed by worldwide customer service and applications support.



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Historically, a significant portion of our revenue in each quarter and year has been derived from sales to relatively few customers, and we expect this trend to continue. For the three months ended March 28, 2020 and for the years ended December 31, 2019, 2018 and 2017, aggregate sales to customers that individually represented at least five percent of our revenue accounted for 54.9%, 42.7%, 18.3%, and 27.2% of our revenue, respectively.

Results of Operations for the Three Months Ended March 28, 2020 and March 31, 2019

Revenue. Our revenue is primarily derived from the sale of our systems, services, spare parts and software licensing. Our revenue of $139.9 million for the three months ended March 28, 2020 increased 129.8% as compared to the three months ended March 31, 2019, in which revenue totaled $60.9 million.

The following table lists, for the periods indicated, the different sources of our revenue in dollars (thousands) and as percentages of our total revenue:





                                   Three Months Ended
                            March 28,              March 31,
                              2020                    2019
Systems and software     114,330        82 %     49,809        82 %
Parts                     13,575        10 %      8,077        13 %
Services                  12,023         8 %      3,006         5 %
Total revenue          $ 139,928       100 %   $ 60,892       100 %



Total systems and software revenue increased $64.5 million for the three months ended March 28, 2020 as compared to the three months ended March 31, 2019 primarily due to the inclusion of revenue from legacy Nanometrics for the first quarter of 2020. The year-over-year change in systems revenue was primarily due to the inclusion of $58.7 million of revenue from legacy Nanometrics for the period. The year-over-year increase in parts and services revenue in absolute dollars from the three months ended March 31, 2019 to the three months ended March 28, 2020 was primarily due to the inclusion of $15.9 million of parts and service revenue from legacy Nanometrics for the period. Parts and services revenue is generated from part sales, maintenance service contracts, system upgrades, as well as time and material billable service calls.

Gross Profit. Our gross profit has been and will continue to be affected by a variety of factors, including manufacturing efficiencies, provision for excess and obsolete inventory, pricing by competitors or suppliers, new product introductions, production volume, customization and reconfiguration of systems, international and domestic sales mix, system and software product mix and parts and service margins. Our gross profit was $62.6 million for the three months ended March 28, 2020, as compared to $32.0 million for the three months ended March 31, 2019. Our gross profit represented 44.8% of our revenue for the three months ended March 28, 2020 and 52.6% for the three months ended March 31, 2019. The decrease in gross profit as a percentage of revenue for the three months ended March 28, 2020, as compared to the three months ended March 31, 2019, is primarily due charges to cost of goods sold of $9.9 million for the sale of inventory written-up to fair value upon the Merger.

Operating Expenses.

Our operating expenses consist of:



     •   Research and Development. The process control defect inspection and
         metrology, advanced packaging lithography, and data analysis systems and
         software market is characterized by continuous technological development
         and product innovations. We believe that the rapid and ongoing
         development of new products and enhancements of existing products,
         including the transition to copper and low-k dielectrics, wafer level
         packaging, the continuous shrinkage in critical dimensions, and the
         evolution of ultra-thin gate process control is critical to our success.
         Accordingly, we devote a significant portion of our technical, management
         and financial resources to research and development programs. Research
         and development expenditures consist primarily of salaries and related
         expenses of employees engaged in research, design and development
         activities. They also include consulting fees, the cost of related
         supplies and legal costs to defend our patents. Our research and
         development expenses were $20.9 million for the three months ended March
         28, 2020, as compared to $10.5 million for the three months ended March
         31, 2019. The year-over-year dollar increase from the 2019 period to the
         2020 period was primarily due to the inclusion in the 2020 period of
         $11.2 million in research and development expense of legacy Nanometrics
         resulting from the Merger. We continue to maintain our commitment to
         investing in new product development and enhancement to existing
         products.


     •   Sales and Marketing. Sales and marketing expenses are primarily comprised
         of salaries and related costs for sales and marketing personnel, as well
         as commissions and other non-personnel related expenses. Our sales and
         marketing expenses were $13.1 million for the three months ended March
         28, 2020, as compared to $4.7 million for the three months ended March
         31, 2019. The year-over-year dollar increase in sales and marketing
         expenses from the 2019


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         period to the 2020 period was primarily due to the inclusion in the 2020
         period of $8.6 million in sales and marketing expenses of legacy
         Nanometrics resulting from the Merger.


     •   General and Administrative. General and administrative expenses are
         primarily comprised of salaries and related costs for general
         administrative personnel, as well as other non-personnel related
         expenses. Our general and administrative expenses were $20.1 million for
         the three months ended March 28, 2020, as compared to $8.8 million for
         the three months ended March 31, 2019. The year-over-year dollar increase
         in general and administrative expenses from the 2019 period to the 2020
         period was primarily due to the inclusion in the 2020 period of $10.0
         million in general and administrative expenses of legacy Nanometrics
         resulting from the Merger.


     •   Amortization of Identifiable Intangible Assets.  Amortization of
         identifiable intangible assets was $13.7 million for the three months
         ended March 28, 2020, as compared to $0.4 million for the same period in
         2019. The year-over-year increase in amortization expense from the 2019
         period to the 2020 period was due to additional amortization recorded in
         the 2020 period associated with additional purchased intangible assets
         recorded as a result of the Merger.

Interest income (expense), net. Net interest income was $1.2 million for the three months ended March 28, 2020, as compared to $0.8 million for the three months ended March 31, 2019. The increase in net interest income from the 2019 period to the 2020 period was due to interest earned on our marketable securities and additional interest income on a higher marketable securities balance following the Merger.

Income Taxes. We recorded an income tax provision of $0.4 million and $1.2 million for the three months ended March 28, 2020 and March 31, 2019, respectively. Our effective tax rate of (10%) differs from the statutory rate of 21% for the three months ended March 28, 2020 primarily due to (i) changes in mix of forecasted earnings by jurisdiction, (ii) computed research and development credits on forecasted earning levels, and (iii) a one-time provision for additional withholding tax related to a dividend distribution from the Company's Korea subsidiary.

Our future effective income tax rate depends on various factors, such as possible further tax legislation, the geographic composition of our pre-tax income, the amount of our pre-tax income as business activities fluctuate, non-deductible expenses incurred in connection with business combinations, and research and development tax credits as a percentage of aggregate pre-tax income.

We currently have a partial valuation allowance recorded for certain foreign and state loss and credit carryforwards where the realizability of such deferred tax assets is substantially in doubt. Each quarter we assess the likelihood that we will be able to recover our deferred tax assets primarily relating to state research and development credits. We consider 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. As a result of our analysis, we concluded that it is more likely than not that a portion of our net deferred tax assets will not be realized. Therefore, we continue to provide a valuation allowance against certain net deferred tax assets. We continue to monitor available evidence and may reverse some or all of the valuation allowance in future periods, if appropriate.

On March 27, 2020, the "Coronavirus Aid, Relief and Economic Security Act" (the "CARES Act") was enacted. The CARES Act includes provisions relating to refundable payroll tax credits, deferment of the employer portion of certain payroll taxes, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property. We are currently analyzing the impact of these changes and therefore an estimate of the impact to income taxes is not yet available.

Liquidity and Capital Resources

At March 28, 2020, we had $291.9 million of cash, cash equivalents and marketable securities and $534.2 million in working capital. At December 31, 2019, we had $320.2 million of cash, cash equivalents and marketable securities and $555.9 million in working capital.

Operating activities provided $8.9 million in net cash and cash equivalents for the three months ended March 28, 2020. The net cash and cash equivalents provided by operating activities during the three months ended March 28, 2020 resulted primarily from net loss, adjusted to exclude the effect of non-cash operating charges, of $27.1 million, partially offset by a decrease in cash provided from operating assets and liabilities of $18.2 million. Operating activities used $1.6 million in net cash and cash equivalents for the three months ended March 31, 2019. The net cash and cash equivalents used by operating activities during the three months ended March 31, 2019 resulted primarily from a decrease in cash used in operating assets and liabilities of $13.6 million, offset by net income, adjusted to exclude the effect of non-cash operating charges, of $12.0 million.

Investing activities used net cash and cash equivalents of $2.6 million during the three months ended March 28, 2020 through purchases of marketable securities of $76.5 million and capital expenditures of $1.0 million, partially offset by proceeds



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from sales of marketable securities of $74.9 million. Net cash and cash equivalents of $9.2 million were used in investing activities during the three months ended March 31, 2019 primarily for the purchases of marketable securities of $22.1 million and capital expenditures of $1.3 million, offset by proceeds from sales of marketable securities of $14.3 million.

Net cash and cash equivalents used in financing activities during the three months ended March 28, 2020 of $35.0 million resulted from the purchase of shares of our common stock under a share repurchase authorizations of $33.6 million and tax payments related to shares withheld for share-based compensation plans of $1.6 million, partially offset by proceeds from sales of shares through share-based compensation plans of $0.2 million. For the three months ended March 31, 2019, financing activities used $1.3 million, which resulted from the purchase of shares of our common stock under Rudolph's previous share repurchase authorizations of $0.7 million and tax payments related to shares withheld for share-based compensation plans of $0.6 million.

From time to time, we evaluate whether to acquire new or complementary businesses, products and/or technologies. We may fund all of or a portion of the price of these investments or acquisitions in cash, stock, or a combination of cash and stock.

Following the Merger, we assumed the share repurchase authorization approved on March 14, 2019 by the former Nanometrics Board of Directors. This share repurchase authorization allows us to purchase up to $80.0 million worth of shares of our common stock. Under the terms of this share repurchase authorization, shares may be repurchased through open market or privately negotiated transactions. During the three months ended March 28, 2020, we repurchased 1.3 million shares of common stock under this repurchase authorization and those shares were subsequently retired. At March 28, 2020, there was $46.4 million available for future share repurchases.

We have a credit agreement with a bank that provides for a line of credit that is secured by the marketable securities we have with the bank. We are permitted to borrow up to 70% of the value of eligible securities held at the time the line of credit is accessed. As of March 28, 2020, the available line of credit was approximately $71.1 million with an available interest rate of 1.8%. The credit agreement is available to us until such time that either party terminates the arrangement at its discretion. To date, we have not utilized the line of credit.

Our future capital requirements will depend on many factors, including the timing and amount of our revenue and our investment decisions, which will affect our ability to generate additional cash. In addition, although there is uncertainty related to the anticipated impact of the recent COVID-19 outbreak on our future results, we believe our business model and our current cash reserves leave us well-positioned to manage our business through this crisis as it continues to unfold. We expect that our existing cash, cash equivalents, marketable securities and availability under our line of credit will be sufficient to meet our anticipated cash requirements for working capital, capital expenditures and other cash needs for the next 12 months following the filing of this Form 10-Q. Thereafter, if cash generated from operations and financing activities is insufficient to satisfy our working capital requirements, we may seek additional funding through bank borrowings, sales of securities or other means. Market conditions due to the COVID-19 pandemic may have an impact on our ability to access such additional funding. Our borrowing capacity under our existing line of credit is tied to the value of eligible securities held at the time of borrowing, which may be negatively impacted by market conditions due to COVID-19 and government responses thereto. In addition, a reduction in or volatility with respect to our stock price or the general market downturn could materially impact our ability to sell securities on favorable terms or at all. There can be no assurance that we will be able to raise any such capital on terms acceptable to us or at all.

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