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The Company and Summary of Significant Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Basis of Presentation
Basis of Presentation
The accompanying consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”). The consolidated financial statements include all adjustments necessary for a fair presentation of our annual results. The Company’s fiscal year begins on January 1 of the year stated and ends on December 31 of the same year. The Company reports its results on a calendar year basis.
Principles of Consolidation
Principles of Consolidation
The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates
Use of Estimates
The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The significant areas requiring the use of management estimates and assumptions include fair value of assets acquired and liabilities assumed in business combinations and estimate of reserve for excess and obsolete inventories. Actual results could differ materially from such estimates. Management believes that the estimates, and judgments upon which they rely, are reasonable based upon information available to them at the time that these estimates and judgments are made.
Foreign Currency Remeasurement
Foreign Currency Remeasurement
The Company and its wholly-owned subsidiaries use the U.S. dollar as their functional currency. Foreign currency assets and liabilities are remeasured into U.S. dollars at the end-of-period exchange rates except for non-monetary assets and liabilities, which are measured at historical exchange rates. Revenue and expenses denominated in non-U.S. dollars are remeasured using an average exchange rate in effect for the period. Gains or losses from foreign currency remeasurement and transactions are included in other expense, net.
Cash and Cash Equivalents
Cash and Cash Equivalents
Cash and cash equivalents consist of cash balances in the Company’s bank checking and savings accounts and liquid short-term investments with original maturities of 90 days or less at the date of purchase, readily convertible to known amounts of cash.
Fair Value Measurements
Fair Value Measurements
The Company determines fair value measurements used in its consolidated financial statements based upon the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy distinguishes between (i) market participant assumptions developed based on market data obtained from independent sources (observable inputs), and (ii) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs).
The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below:
Level 1:    Valuations based on quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.
Level 2:    Valuations based on quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable data for substantially the full term of the assets or liabilities.
Level 3:    Valuations based on inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
Cash equivalents
At December 31, 2025 and 2024, highly liquid money market funds of $0.4 million and $0.3 million, respectively, were valued using Level 1, of the fair value hierarchy, quoted prices in active markets for identical assets and are included in cash equivalents.
Short-term investments in held-to-maturity securities
As of December 31, 2025, the Company had purchased Treasury Bills with maturities ranging from 3 to 12 months, which the Company intends to hold until maturity and has classified as held-to-maturity securities. The held-to-maturity securities are recorded at amortized cost totaling $791.6 million including gross accrued interest of $7.8 million. As of December 31, 2025, the fair value and gross unrealized gain on the held-to-maturity securities was $792.1 million and $0.5 million respectively. The carrying value of the Company's investments is reviewed quarterly for changes in circumstances or the occurrence of events that suggests an investment may not be fully recoverable. These Treasury Bills were valued using Level 1 of the fair value hierarchy, quoted prices in active markets for identical assets, and are included in short-term investments.
As of December 31, 2024, the Company had purchased Treasury Bills with maturities ranging from 3 to 6 months, which the Company held until maturity and classified as held-to-maturity securities. The held-to-maturity securities were recorded at amortized cost totaling $412.7 million including gross accrued interest of $4.3 million. As of December 31, 2024, the fair value and gross unrealized gain on the held-to-maturity securities was $412.9 million and $0.2 million respectively. The carrying value of the Company's investments is reviewed quarterly for changes in circumstances or the occurrence of events that suggests an investment may not be fully recoverable. These Treasury Bills were valued using Level 1 of the fair value hierarchy, quoted prices in active markets for identical assets, and are included in short-term investments.
Sales based earnout liability
The estimated fair value of the sales based earnout liability is determined using a Monte Carlo simulation model using significant unobservable fair value inputs and is therefore classified as a Level 3 measurement. The assumptions used in the calculation are based on the revenue projections over the term of the contingent earn-out period, expected volatility, and discount rate. The estimates of fair value are uncertain and changes in any of the estimated inputs used as of the date of this report will result in significant adjustments to the fair value. As of December 31, 2025, the Company used a volatility rate of 20%, risk-free rate ranging from 3.4% to 3.7%, and an expected term ranging from 0.1 years to 2.9 years.
The following table sets forth a summary of the changes in the fair value of the Company’s Level 3 financial liabilities:
Year Ended December 31,
20252024
Beginning fair value$97,256 $103,461 
Change in the fair value during the year recorded to acquisition related costs4,000 6,049 
Payments made during the period(12,903)(12,254)
Ending fair value$88,353 $97,256 
There were no transfers between Level 1, Level 2, and Level 3 categories during any of the periods presented.
Accounts Receivable and Allowances for Credit Losses
Accounts Receivable and Allowances for Credit Losses
Trade accounts receivable are recorded at the invoiced amount, net of allowances for credit losses. An allowance for credit losses is recorded when it is probable that amounts will not be collected based on historical collection trends, age of outstanding receivables, specific customer circumstances, existing economic conditions and future forecasted information. The Company performs periodic credit evaluations of its customers’ financial condition and generally requires no collateral from its customers. Losses have not been significant in any of the periods presented.
Concentration of Credit Risk
Concentration of Credit Risk
Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents, short-term investments and accounts receivable. Substantially all of the Company's cash and cash equivalents balances are in excess of Federal Deposit Insurance Corporation insurance limits with financial institutions. Investment policies have been implemented that limit purchases of marketable debt securities to investment-grade securities.
The Company extends credit based on an evaluation of the customer’s financial condition and collateral is not typically required. The Company primarily sells its products through third-party distributors.
Inventories
Inventories
Inventories are stated at the lower of standard cost (which approximates actual cost on a first-in, first-out basis) or net realizable value. The Company reduces excess and obsolete inventories to their estimated net realizable value based on management’s assessment of future demand, historical usage by product, and market conditions. Inventory reserve write-downs, once established, are not released until the related inventory has been sold or scrapped.
Property and Equipment
Property and Equipment
Property and equipment are recorded at cost, less accumulated depreciation. Depreciation of property and equipment is recognized on a straight-line basis over the estimated useful lives of the respective assets as follows:
Lab and manufacturing equipment
3 to 7 years
Computer equipment3 years
Furniture and fixtures5 years
Leasehold improvementsShorter of remaining lease term or estimated useful lives of the assets
Maintenance and repair costs are charged to expense as incurred, and expenditures that extend the useful lives of assets are capitalized. Upon retirement or sale of the property and equipment, the cost and related accumulated depreciation are removed from the balance sheet and the resulting gain or loss is recorded in operating expenses.
Intangible Assets
Intangible Assets
Purchased intangible assets with finite lives are carried at cost, less accumulated amortization. Amortization is computed using the straight-line method over the estimated useful lives of the respective assets of 3 to 10 years. Acquisition-related in-process research and development represents the fair value of incomplete research and development projects that have not reached technological feasibility as of the date of acquisition. Initially, these assets are not subject to amortization. Assets related to projects that have been completed are transferred to developed technology, which are subject to amortization.
Leases
Leases
The Company determines if an arrangement is a lease at inception. Lease classification is evaluated at commencement and, as necessary, at modification. Operating lease related balances are included in right-of-use (“ROU”), assets, accrued expenses and other current liabilities, and other non-current liabilities in the Company’s consolidated balance sheets. The Company currently does not have any finance leases.
Operating lease ROU assets represent the Company's right to use an underlying asset for the lease term and operating lease liabilities represent the present value of the Company’s obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the present value of the future lease payments at the lease commencement date. The interest rate used to determine the present value of the future lease payments is the incremental borrowing rate of the Company, because the interest rates implicit in most of its leases are not readily determinable. The incremental borrowing rate is estimated to approximate the interest rate on a collateralized basis with similar terms and payments, and in economic environments where the leased asset is located. Operating lease ROU assets also include adjustments related to lease incentives, prepaid or accrued rent and initial direct lease costs. Operating lease ROU assets are subject to evaluation for impairment or disposal on a basis consistent with other long-lived assets.
Lease terms may include periods under options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. The Company generally uses the base, non-cancelable lease term when determining the lease right-of-use assets and lease liabilities. Operating lease cost is recognized on a straight-line basis over the lease term.
The Company has elected the practical expedient within ASC Topic 842 to account for lease and non-lease components as a single lease component. Additionally, the Company has elected the short-term lease exception for all classes of assets and does not recognize ROU assets and lease liabilities for leases with a term of 12 months or less and recognizes lease payments for short-term leases as expense either straight-line over the lease term or as incurred depending on whether the lease payments are fixed or variable. These elections are applied consistently for all leases. Payments under the Company's lease arrangements are primarily fixed, however, certain lease agreements contain variable payments, which are expensed as incurred and not included in the operating lease ROU assets and liabilities. Variable lease payments are primarily comprised of common area maintenance charges and utility costs.
Business Combinations
Business Combinations
The Company applies the provisions of ASC 805, Business Combinations (ASC 805), in accounting for acquisitions. ASC 805 requires that the Company evaluates whether a transaction pertains to an acquisition of assets, or to an acquisition of a business. A business is defined as an integrated set of assets and activities that is capable of being conducted and managed for the purpose of providing a return to investors. Asset acquisitions are accounted for by allocating the cost of the acquisition to the individual assets and liabilities assumed on a relative fair value basis; whereas the acquisition of a business requires the Company to recognize separately from goodwill the assets acquired and the liabilities assumed at the acquisition date fair values. Goodwill as of the business acquisition date is measured as the excess of consideration transferred over the net of the acquisition date fair values of the assets acquired and the liabilities assumed. The Company also evaluates all contingent consideration arrangements to determine if the arrangements are compensatory in nature. No liability is recognized at the acquisition date for arrangements concluded to be compensatory. While the Company uses its best estimates and assumptions to accurately value assets acquired and liabilities assumed at the business acquisition date as well as any contingent consideration, where applicable, the estimates are inherently uncertain and subject to refinement. Estimates and assumptions relevant to the determination of the fair value of the assets acquired and liabilities assumed include, but are not limited to, revenue projections, discount rates, and other assumptions. The approach to estimating an initial contingent consideration associated with the purchase price also uses similar unobservable factors such as revenue projections over the term of the contingent earn-out period, discounted for the period over which the initial contingent consideration is measured and expected volatility. Based upon these assumptions, the initial contingent consideration is then valued using a Monte Carlo simulation. As a result, during the measurement period, which may be up to one year from the business acquisition date, the Company may record certain adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of a business acquisition’s measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations. In the event an acquisition involves an entity with which the Company has a preexisting relationship, the Company will recognize a gain or loss, if any, to settle that relationship as of the acquisition date within the consolidated statement of operations and comprehensive loss. All acquisition-related costs are accounted for as expenses in the period in which they are incurred. Changes in the fair value of contingent consideration arrangements that are not measurement period adjustments are recognized in earnings.
Impairment of Goodwill, Intangible Assets, and Other Long-Lived Assets
Impairment of Goodwill, Intangible Assets, and Other Long-Lived Assets
Goodwill is evaluated for impairment on an annual basis in the fourth quarter of the Company's fiscal year, and whenever events or changes in circumstances indicate the carrying amount of goodwill may not be recoverable. The Company has elected to first assess qualitative factors to determine whether it is more likely than not that the fair value of its single reporting unit is less than its carrying amount, including goodwill. If the Company determines that it is more likely than not that the fair value is less than its carrying amount, then the quantitative impairment test will be performed. Under the quantitative impairment test, if the carrying amount exceeds its fair value, the Company will recognize an impairment loss in an amount equal to that excess but limited to the total amount of goodwill.
The Company evaluates events and changes in circumstances that could indicate carrying amounts of purchased intangible assets and other long-lived assets may not be recoverable. When such events or changes in circumstances occur, it assesses the recoverability of these assets or asset groups by determining whether or not the carrying amount will be recovered through undiscounted expected future cash flows. If the total of the future undiscounted cash flows is less than the carrying amount of an asset or asset group, the Company records an impairment loss for the amount by which the carrying amount exceeds the fair value of the asset or asset group.
Warranty
Warranty
The Company provides limited lifetime warranty coverage on all of its products by guaranteeing that all timing components from the Company will be free from defects in workmanship and materials and will conform to specifications for the life of the system. This assurance-type warranty is not considered a separate performance obligation, and thus no transaction price is allocated to it. The Company records the warranty costs in cost of revenue in the consolidated statements of operations and comprehensive loss. The warranty reserve is calculated using historical claim information to project future warranty claims activity and is recorded within accrued expenses and other current liabilities and other non-current liabilities on the consolidated balance sheets based on the expected timing of the related payments.
Income Taxes
Income Taxes
Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the carrying amounts in the consolidated financial statements of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards, using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. A valuation allowance is provided in order to reduce the deferred tax assets to a level which, more likely than not, will be realized.
While the Company believes it has adequately reserved for its uncertain tax positions, no assurance can be given that the final tax outcome of these matters will not be different. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of a tax audit. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will impact the provision for income taxes and the effective tax rate in the period in which such determination is made.
The Company recognizes tax positions in the consolidated financial statements only when it is more likely than not that the position will be sustained upon examination by the relevant taxing authority. Liabilities are established for differences between positions taken in a tax return and amounts recognized in the consolidated financial statements. The Company reports interest and penalties related to uncertain tax positions, if any, in the provision for income taxes in the consolidated statements of operations and comprehensive loss. To the extent that accrued interest and penalties do not ultimately become payable, amounts accrued will be reduced and reflected as a reduction of the overall provision for income taxes in the period that such determination is made.
Revenue Recognition
Revenue Recognition
The Company derives revenue from its product sales primarily to distributors, who in turn sell to original equipment manufacturers or other end customers. The Company recognizes product revenue, at a point in time, upon shipment when it satisfies its performance obligations as evidenced by the transfer of control of its products to customers. The software included in our offerings is embedded in the related products, is not sold separately, and does not provide a separate and distinct benefit to the customer. Accordingly, the Company does not identify such software as a separate performance obligation. The Company measures revenue based on the amount of consideration it expects to be entitled to in exchange for products. Variable consideration is estimated and reflected as an adjustment to the transaction price. Depending on the terms of the contract, variable consideration is estimated using either the expected value approach or the most likely value approach. The Company determines variable consideration, which consists primarily of price adjustments and product returns by estimating the amount of consideration the Company expects to receive from its customers based on historical experience of price adjustments and product returns. Changes to the Company’s estimated variable consideration were not material for the periods presented. Since the Company’s performance obligations relate to contracts with a duration of less than one year, it does not disclose the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period.
The Company’s payment terms vary by contract type and type of customer and generally range from 30 to 60 days from shipment. The Company has also elected to recognize the cost for freight and shipping when control over the products sold passes to customers and revenue is recognized.
As a practical expedient, the Company records the incremental costs of obtaining a contract, consisting primarily of sales commissions, when incurred because the amortization period is one year or less. These costs are recorded within selling, general, and administrative expenses.
Cost of Revenue
Cost of Revenue
Cost of revenue consists of wafers acquired from third-party foundries, assembly, packaging, and test cost of the Company’s products paid to third-party contract manufacturers, and personnel and other costs associated with the manufacturing operations of the Company. Cost of revenue also includes depreciation of production equipment, inventory
write-downs, shipping and handling costs, and allocation of overhead and facility costs. The Company also includes credits for rebates received from third-party contract manufacturers in cost of revenue.
Research and Development Expenses
Research and Development Expenses
Research and development costs consist primarily of personnel cost, material cost, and facilities related expenses, incurred in the course of planned research and development of new products. Research and development costs are expensed as incurred.
Non-recurring engineering services
Non-recurring engineering services
The Company has certain contracts to provide non-recurring engineering (NRE) services for research and development arrangements through 2026, which do not meet the requirement to be accounted for under ASC 606, Revenue from Contracts with Customers. The Company recognizes the payments received under these NRE arrangements as liabilities and recognizes them as an offset to research and development expense as the Company achieves the milestones of the contract. As the progress towards completion occurs, the Company uses an input method based on the ratio of costs incurred to date to total estimated costs of the project. Judgment is required to estimate the remaining effort to complete the project. These estimates are reassessed throughout the term of the arrangement. For the years ended December 31, 2025, 2024, and 2023, the Company recorded $1.8 million, $1.5 million and $3.9 million, respectively as a reduction of research and development expenses in the consolidated statements of operations.
Selling, General and Administrative Expenses
Selling, General and Administrative Expenses
Selling, general and administrative expenses primarily consist of personnel costs, field application engineering support, travel costs, professional and consulting fees, accounting and audit fees, legal, advertising expenses, and allocated overhead costs. Selling, general and administrative costs are expensed as incurred.
Stock-Based Compensation
Stock-Based Compensation
The Company grants restricted stock unit awards (“RSUs”) of its own common stock. Compensation expense related to share-based transactions is measured at fair value on the grant date. The Company recognizes share-based compensation expense for awards with only service conditions on a straight-line basis over the requisite service period.
Stock-based compensation expense for performance-based restricted stock unit awards ("PRSU") is recognized when it becomes probable that the performance conditions will be met. Stock-based compensation expense for grants with market conditions is valued using a Monte-Carlo simulation model. The Company amortizes stock-based compensation expense for these grants using the graded-vesting method over the requisite performance period. The Company recognizes the expense related to the multi-year performance based restricted stock unit awards ("MYPSU") on a graded-vesting method over the requisite service period.
The Company recognizes forfeitures as they occur.
Net Loss Per Share Attributable to Common Stockholders
Net Loss Per Share Attributable to Common Stockholders
Basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, without consideration for potentially dilutive securities. Diluted net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock and potentially dilutive securities outstanding for the period. Refer to "Note 3 - Net Loss Per Share" for further discussion regarding potentially dilutive and anti-dilutive securities.
Comprehensive Income (Loss)
Comprehensive Loss
The Company has no components of other comprehensive loss. Therefore, net loss equals comprehensive loss for all periods presented.
Recently Accounting Pronouncements
Recent Accounting Pronouncements
Recently issued accounting pronouncements not yet adopted
In November 2024, the FASB issued ASU No. 2024-03, Disaggregation of Income Statement Expenses (Subtopic 220-40). The ASU requires the disaggregated disclosure of specific expense categories, including purchases of inventory, employee compensation, depreciation, and amortization, within relevant income statement captions. This ASU also requires disclosure of the total amount of selling expenses along with the definition of selling expenses. The ASU is effective for annual periods beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Adoption of this ASU can either be applied prospectively to consolidated financial statements issued for reporting periods after the effective date of this ASU or retrospectively to any or all prior periods presented in the consolidated financial statements. Early adoption is also permitted. This ASU will likely result in the required additional disclosures being included in our consolidated financial statements, once adopted. We are currently evaluating the provisions of this ASU.
Recently adopted accounting pronouncements
In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, Improvements to Income Tax Disclosures (Topic 740). The ASU requires disaggregated information about a reporting entity’s effective tax rate reconciliation as well as additional information on income taxes paid. The ASU is effective on a prospective basis for annual periods beginning after December 15, 2024. The Company adopted this guidance on a prospective basis with no material impact on its consolidated financial statements for its Annual Report on Form 10-K for the fiscal year ended December 31, 2025. Refer "Note 9 - Income Taxes" for further details.