Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of PresentationThe consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”). Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification (“ASC”) and the Accounting Standards Update (“ASU”) of the Financial Accounting Standards Board (“FASB”).
Consolidation	The consolidated financial statements include the consolidated accounts of the Company’s majority-owned subsidiary, ADK LLC, of which 85% was owned by indie as of December 31, 2022. ADK LLC’s consolidated financial statements include its wholly-owned subsidiaries indie Services Corporation, indie LLC and indie City LLC, all California entities, Ay Dee Kay Limited, a private limited company incorporated under the laws of Scotland, indie GmbH and Symeo GmbH, both of which are private limited liability companies incorporated under the laws of Germany, indie Kft, a limited liability company incorporated under the laws of Hungary, TeraXion Inc., a company incorporated under the laws of Canada, indie Semiconductor Israel Ltd., a private limited company incorporated under the laws of Israel, Ay Dee Kay S.A., a limited liability company incorporated under the laws of Argentina, indie Semiconductor Morocco, a limited liability company under the laws of Morocco, indie Semiconductor Japan KK, a limited liability company under the laws of Japan, indie Semiconductor Korea Branch, a limited liability company under the laws of Korea, Wuxi indie Microelectronics (“Wuxi”), a Chinese entity with 55% voting controlled and 38% owned by the Company as of December 31, 2022 and Wuxi’s wholly-owned subsidiaries, indie Semiconductor Suzhou, indie Semiconductor HK, Ltd and Shanghai Ziying Microelectronics Co., Ltd.All significant intercompany accounts and transactions of the subsidiaries have been eliminated in consolidation. Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations. The noncontrolling interest attributable to the Company’s less-than-wholly-owned subsidiary is presented as a separate component from stockholders’ equity (deficit) in the consolidated balance sheets, and a noncontrolling interest in the consolidated statements of operations and consolidated statements of stockholders’ equity (deficit) and noncontrolling interest Consolidation The consolidated financial statements comprise the financial statements of the Company, its wholly owned subsidiaries, and subsidiaries that it controls due to ownership of a majority voting interest. Subsidiaries are fully consolidated from the date of acquisition, being the date on which the Company obtains control, and continue to be consolidated until the date when such control ceases. All significant intercompany accounts and transactions are eliminated in consolidation. The Company recognizes noncontrolling interest related to its less-than-wholly-owned subsidiary as equity in the consolidated financial statements separate from the parent entity’s equity. The net loss attributable to noncontrolling interest is included in net loss in the consolidated statements of operations and comprehensive loss. The Company accounts for investments in which it has significant influence but not a controlling interest using the equity method of accounting.
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 reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the consolidated financial statements and the reported amounts of expenses during the reporting period. Actual results could differ materially from those estimates and assumptions. On an ongoing basis, management evaluates its estimates assumptions, including those related to (i) the collectability of accounts receivable; (ii) write-down for excess and obsolete inventories; (iii) warranty obligations; (iv) the value assigned to and estimated useful lives of long-lived assets; (v) the realization of tax assets and estimates of tax liabilities and tax reserves; (vi) amounts recorded in connection with acquisitions; (vii) recoverability of intangible assets and goodwill; (viii) the recognition and disclosure of fair value of debt instruments, warrants and contingent liabilities; (ix) the computation of share-based compensation; (x) accrued expenses; and (xi) the recognition of revenue based on a cost-to-cost measure of progress for certain engineering services contracts. These estimates are based on historical data and experience, as well as various other factors that management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. The Company engages third-party valuation specialists to assist with estimates related to the valuation of certain financial instruments and assets associated with various contractual arrangements, and valuation of assets acquired in connection with acquisitions. Such estimates often require the selection of appropriate valuation methodologies and models, and significant judgment in evaluating ranges of assumptions and financial inputs. Actual results may differ from those estimates under different assumptions or circumstances.
Foreign Currency	Foreign Currency Certain of the Company’s self-sustaining foreign subsidiaries use the local currency as their functional currency. Assets and liabilities for these subsidiaries have been translated into U.S. dollars at the exchange rates prevailing at the end of the period and results of operations at the average exchange rates for the period. Unrealized exchange gains and losses arising from the translation of the financial statements of our non-U.S. functional currency operations are accumulated in the cumulative translation adjustments account in accumulated other comprehensive loss. For those foreign subsidiaries where the U.S. dollar is the functional currency, all foreign currency-denominated accounts are remeasured into U.S. dollars. Unrealized exchange gains and losses arising from remeasurements of foreign currency-denominated assets and liabilities are included within Other income (expense), net in the consolidated statements of operations and comprehensive loss. Gains and losses arising from international intercompany transactions that are of a long-term investment nature are reported in the same manner as translation gains and losses. Realized exchange gains and losses are included in net income for the periods presented.
Foreign Exchange Contracts	Forward Exchange Contracts The Company’s forward exchange contracts, which are used to hedge anticipated U.S. dollar denominated sales and purchases as well as euro-denominated purchases, do not qualify for hedge accounting and are recognized at fair value. Any change in the fair value of these contracts is reflected as part of Other income (expense), net in the consolidated statement of operations.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents are defined as short-term, highly liquid investments with original maturities of 90 days or less at the date of purchase. As of December 31, 2022 and 2021, cash and cash equivalents consisted of money market funds and cash deposits that were held by reputable financial institutions in local jurisdictions of the Company’s subsidiaries including the U.S., Asia, Canada, Germany, and Great Britain denominated in U.S. dollars and local currency.
Restricted Cash	Restricted Cash The Company’s restricted cash consists of cash that the Company is contractually obligated to maintain in accordance with the terms of its PacWest Revolving Line of Credit and accumulated credit limit.
Accounts Receivable	Accounts Receivable Accounts receivable consist of amounts due primarily from customers for product sales and engineering services agreements. Accounts receivable are recorded at the invoiced amount and do not bear interest. The Company accounts for potential losses in accounts receivable utilizing the allowance method. The Company closely monitors outstanding accounts receivable and considers its knowledge of customers, historical losses, and current economic conditions in establishing the allowance for doubtful accounts. The Company did not have material write-offs in any period presented.
Concentration of Credit Risk	Concentration of Credit Risk The Company deposits its cash with large financial institutions. At times, the Company’s cash balances with individual banking institutions will exceed the limits insured by the FDIC, however, the Company has not experienced any losses on such deposits. The Company extends credit to its customers based upon an evaluation of the customers’ financial condition and credit history and generally does not require collateral. Credit losses, if any estimated, are provided for in the consolidated financial statements and consistently have been within management’s expectations. See Note 16 — Revenue — Concentrations.
Inventory, Net	Inventory, Net The Company values inventories at the lower of cost or net realizable value on a first-in, first-out basis. Cost is computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Inventories are reduced for write-downs based on periodic reviews for evidence of slow-moving or obsolete parts. The write-down is based on the comparison between inventory on hand and forecasted customer demand for each specific product. Once written down, inventory write-downs are not reversed until the inventory is sold or scrapped. Inventory write-downs are also established when conditions indicate the net realizable value is less than cost due to physical deterioration, technological obsolescence, changes in price level or other causes. All inventory provisions are recorded to cost of goods sold in the consolidated statement of operations.
Property and Equipment, Net	Property and Equipment, Net The Company’s property and equipment primarily consist of lab equipment, production tooling and masks, equipment, furniture and fixtures, leasehold improvements, and computer hardware and software. Property and equipment are recorded at cost less accumulated depreciation. Depreciation is calculated using the straight-line method based on the estimated useful lives of between three and seven years and for leasehold improvements the lesser of the remaining lease term or useful life. Major improvements are capitalized while routine repairs and maintenance are charged to expense when incurred. Production masks with discernible future benefits, namely that they will be used to manufacture products to service customer demand, are capitalized and amortized over the estimated useful life of four years. Production masks being used for research and development or testing do not meet the criteria for capitalization and are expensed as research and development costs.
Business Combinations	Business Combinations The Company accounts for its business acquisitions under the ASC Topic 805, Business Combinations guidance for business combinations. The total cost of acquisitions is allocated to the underlying identifiable net assets based on their respective estimated fair values. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, asset lives and market multiples, among other items.
Intangible Assets, Net	Intangible Assets, Net The Company’s intangible assets include intangible assets acquired from business combinations, intellectual property (“IP”) and software licensed from third parties. The majority of the intangible assets have finite lives, except for those related to in-progress research and development (“IPR&D”), and are amortized over a period of two to ten years, on a straight-line basis, which approximates the pattern in which economic benefits of these assets are expected to be utilized. IPR&D is considered to have indefinite life until the abandonment or completion of the associated research and development efforts. If the development is abandoned in the future, these assets will be expensed in the period of abandonment. If and when the development activities are completed, management will make a determination of the useful lives and methods of amortization of these assets. Intangible assets with finite lives are amortized on a straight-line basis over the expected period to be benefited by future cash flows. The Company monitors and assesses these assets for impairment on a periodic basis.
Goodwill	Goodwill Goodwill represents the excess of the fair value of purchase consideration of an acquired business over the fair value of the identifiable net assets acquired. Goodwill is not amortized but is tested for impairment at a reporting unit level on an annual basis on October 1, or more frequently if circumstances change or an event occurs that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Significant judgment may be required when goodwill is assessed for impairment. Qualitative factors may be assessed to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If the assessment of all relevant qualitative factors indicates that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, a quantitative goodwill impairment test is not necessary. If the assessment of all relevant qualitative factors indicates that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, the Company will perform a quantitative goodwill impairment test. The quantitative impairment test for goodwill consists of a comparison of the fair value of a reporting unit with its carrying value, including the goodwill allocated to that reporting unit. If the carrying value of a reporting unit exceeds its fair value, the Company will recognize an impairment loss equal to the amount of the excess, limited to the amount of goodwill allocated to that reporting unit. Application of the impairment test requires judgement, including the identification of reporting units, assignment of assets and liabilities to reporting units and the determination of fair value of each reporting unit.
Impairment of Long-Lived Assets	Impairment of Long-Lived AssetsThe Company reviews its long-lived assets, consisting of property and equipment, right-of-use assets and intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company regularly reviews its operating performance for indicators of impairment. Factors considered important that could trigger an impairment review include a significant underperformance relative to expected historical or projected future operating results, or a significant change in the manner of the use of the assets. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset (or asset group) to estimated undiscounted future cash flows expected to be generated by the asset (or asset group). If the carrying amount of an asset (or asset group) exceeds its estimated undiscounted future cash flows, an impairment charge is recognized to the extent the fair value is less than the carrying value.
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between willing, able and knowledgeable market participants at the measurement date. Fair value measurements are not adjusted for transaction costs. In addition, a three-tiered hierarchy for inputs is used in management’s determination of fair value of financial instruments that emphasizes the use of observable inputs over the use of unobservable inputs by requiring that the observable inputs be used when available. Observable inputs are market participant assumptions based on market data obtained from sources independent of the Company. Unobservable inputs are the reporting entity’s own assumptions about market participants based on the best information available under the circumstances. In assessing the appropriateness of using observable inputs in making its fair value determinations, the Company considers whether the market for a particular security is “active” or not based on all the relevant facts and circumstances. Valuation service providers typically obtain data about market transactions and other key valuation model inputs from multiple sources and, through the use of widely accepted valuation models, provide a single fair value measurement for individual securities for which a fair value has been requested under the terms of service agreements. The inputs used by the valuation service providers include, but are not limited to, market prices from recently completed transactions and transactions of comparable securities, interest rate yield curves, credit spreads, currency rates and other market observable information, as applicable. The valuation models consider, among other things, market observable information as of the measurement date as well as the specific attributes of the security being valued including its term, interest rate, credit rating, industry sector and, when applicable, collateral quality and other issue or issuer specific information. When market transactions or other market observable data is limited, the extent to which judgment is applied in determining fair value is greatly increased. As a basis for considering such assumptions, a three-tier value hierarchy is used in management’s determination of fair value based on the reliability and observability of inputs as follows: Level 1 — Valuations are based on unadjusted quoted prices in active markets that the Company has the ability to access for identical, unrestricted assets and do not involve any meaningful degree of judgment. An active market is defined as a market where transactions for the financial instrument occur with sufficient frequency and volume to provide pricing information on an ongoing basis; Level 2 — Valuations are based on direct and indirect observable inputs other than quoted market prices included in Level 1. Level 2 inputs include quoted prices for similar assets in active markets and inputs other than quoted prices that are observable for the asset, such as the terms of the security and market-based inputs; Level 3 — Valuations are based on techniques that use significant inputs that are unobservable. The valuation of Level 3 assets and liabilities requires the greatest degree of judgment. These measurements may be made under circumstances in which there is little, if any, market activity for the asset or liability. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment. In making the assessment, the Company considers factors specific to the asset. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s fair value measurements in each reporting period include cash equivalents, debt instruments, share-based awards, SAFEs, warrants, contingent considerations and earn-out liabilities. The Company’s financial instruments of accounts receivable, accounts payable and accrued expenses are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment date. The Company remeasures its simple agreements for future equity (“SAFEs”), warrants, contingent considerations and earn-out liabilities associated with business combinations using Level 3 fair value measurements.
Warrant Liability	Warrant LiabilityThe Company accounts for the public and private placement warrants issued in connection with the Transaction in accordance with ASC 815-40, Derivatives and Hedging—Contracts in Entity’s Own Equity (“ASC 815”), under which the warrants do not meet the criteria for equity classification and must be recorded as liabilities. As the warrants meet the definition of a derivative as contemplated in ASC 815, the warrants are measured at fair value at inception and at each reporting date in accordance with ASC 820, Fair Value Measurement, with changes in fair value recognized as a component of Other income (expense), net on the consolidated statement of operations.
Earn Out Liability	Earn-out Liability The earn-out shares have been categorized into two components: (i) those associated with stockholders with vested equity at the closing of the Transaction that will be earned upon achievement of the earn-out milestones (the “Vested Shares”) and (ii) those associated with stockholders with unvested equity at the closing of the Transaction that will be earned over the remaining service period with the Company on their unvested equity shares and upon achievement of the earn-out milestones (the “Unvested Shares”). The Vested Shares were initially classified as liabilities in the consolidated balance sheet at fair value and subsequently were remeasured at the end of each reporting period. The estimated fair value of the earn-out liability was determined using a Monte Carlo Simulations analysis that simulated the future path of the Company’s stock price over the earn-out period. The assumptions utilized in the calculation are based on the achievement of certain stock price milestones including projected stock price, volatility, and risk-free rate. The change in fair value of the earn-out liability was recorded as part of Other income (expense), net in the consolidated statement of operations. Upon the achievement of the first earn-out milestones, the liability classified portion was remeasured to its fair value and reclassified to equity. The final change in fair value of the earn-out liability is recorded as part of Other income (expense), net in the consolidated statement of operations. The Unvested Shares are equity-classified share-based compensation to be recognized over time.
Segment Information	Segment Information Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The chief operating decision maker (“CODM”) is the Chief Executive Officer. The Company has multiple business activities and are managed and held accountable for operations, operating results and plans for levels or components below the consolidated unit level by individual segment managers. However, discrete financial information is not reviewed by CODM as the operating results of the Company are reviewed by the CODM only on a consolidated basis. Accordingly, the Company has one operating segment, and therefore, one reportable segment.
Revenue	Revenue Revenue is primarily derived from the design and sale of semiconductor solutions. Revenue is recognized within the scope of ASC 606, Revenue from Contracts with Customers. The Company recognizes product revenue in the consolidated statement of operations when it satisfies performance obligations under the terms of its contracts and upon transfer of control at a point in time when title transfers either upon shipment to or receipt by the customer as determined by the contractual shipping terms of the contract, net of accruals for estimated sales returns and allowances. Sales and other taxes the Company collects, if any, are excluded from revenue. Product revenue arrangements do not contain significant financing components. The Company generally offers a limited warranty to customers covering a period of twelve months which obligates the Company to repair or replace manufacturing defective products. The warranty is not sold separately and does not represent a separate performance obligation. Therefore, such warranties are accounted for under ASC 460, Guarantees, and the estimated costs of warranty claims are accrued as cost of goods sold in the period the related revenue is recorded. Infrequently, the Company offers an extended limited warranty to customers for certain products. The Company accrues for known warranty and indemnification issues if a loss is probable and can be reasonably estimated. Engineering services contracts with customers typically contain only one distinct performance obligation, which is primarily design services for integrated circuits (“ICs”) based on agreed upon specifications. Engineering services contracts typically also include the purchase, at the customer’s option, of the designed products at agreed upon prices subsequent to completion of the design services. The Company has determined that the option to purchase these products is not a material right and has not allocated transaction price to this provision. For these engineering services arrangements, revenue is recognized over time as services are provided based on the terms of the contract on an input basis, using costs incurred as the measure of progress and is recorded as contract revenue in the consolidated statement of operations. The costs incurred represent the most reliable measure of transfer of control to the customer. Revenue is deferred for amounts billed or received prior to delivery of the services. Practical Expedients and Elections ASC 606 requires disclosure of the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied as of the reporting periods presented. The guidance provides certain practical expedients that limit this requirement and, therefore, disclosure of the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which revenue is recognized at the amount to which the Company has the right to invoice for services performed is not provided. The Company has elected not to disclose the aggregate amount of transaction prices associated with unsatisfied or partially unsatisfied performance obligations for contracts where these criteria are met. The Company’s policy is to capitalize any incremental costs incurred to obtain a customer contract, only to the extent that the benefit associated with the costs is expected to be longer than one year. Capitalizable contract costs were not significant as of both December 31, 2022 and 2021, and accordingly, no costs have been capitalized. The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. When shipping and handling costs are incurred after a customer obtains control of the products, the Company has elected to account for these as costs to fulfill the promise and not as a separate performance obligation. Shipping and handling costs associated with the distribution of products to customers are insignificant, but if incurred, are recorded in cost of goods sold generally when the related product is shipped to the customer. Upon adoption of ASC 842, the Company elected the package of practical expedients permitted under the transition guidance, which does not require reassessment of prior conclusions related to contracts containing a lease, lease classification and initial direct lease costs. Further, the Company elected to exclude short-term leases (term of 12 months or less) from the balance sheet presentation and accounted for non-lease and lease components in a contract as a single lease for certain asset classes.
Cost of Goods Sold	Cost of Goods Sold Cost of goods sold includes cost of materials and contract manufacturing services, including semiconductor wafers processed by third-party foundries, costs associated with packaging, assembly, testing and shipping products. In addition, cost of goods sold includes the costs of personnel, certain royalties for embedded intellectual property, production tooling used in the manufacturing process, logistics, warranty, and amortization of production mask costs. Cost of goods sold also include amortization of certain intangible assets acquired through business combinations. In addition to generating revenues from product shipments, the Company recognizes revenues related to certain engineering services contracts which help offset the costs of developing ICs for customers. The costs associated with fulfilling these contracts are expensed as incurred as research and development in the period incurred.
Research and Development Expense	Research and Development Expenses Research and development expenses consist of costs incurred in performing product design and development activities including employee compensation and benefits, third-party fees paid to consultants, occupancy costs, pre-production engineering mask costs, engineering samples and prototypes, packaging, test development and product qualification costs. In certain situations, the Company enters into engineering services agreements with certain customers to develop ICs. The costs incurred in satisfying these contracts are recorded as research and development expenses. Research and development expenses also include amortization of certain intangible assets acquired through business combinations. All research and development costs are expensed as incurred.
Selling, General and Administrative Expenses	Selling, General, and Administrative Expenses Selling, general, and administrative expenses include employee compensation and benefits for sales, executive management, finance, accounting, legal, human resources and other administrative personnel. In addition, it includes marketing and advertising, outside legal, tax and accounting services, insurance, and occupancy costs and related overhead costs allocated based on headcount. Selling, general, and administrative costs also include amortization of certain intangible assets acquired through business combinations. Selling, general, and administrative costs are expensed as incurred.
Share-Based Compensation	Share-Based Compensation The Company recognizes compensation expense for all share-based payment awards made to employees and directors. The fair value of share-based payment awards is amortized over the requisite service period, which is defined as the period during which an employee is required to provide service in exchange for an award. The Company generally uses a straight-line attribution method for all grants that include only a service condition. Awards with both performance and service conditions are expensed over the service period for each separately vesting tranche. Share-based compensation expense recognized during the period includes actual expense on vested awards and expense associated with unvested awards. Forfeitures are recorded as incurred. The determination of fair value of restricted and certain market- or performance-based stock awards and units is based on the value of the Company’s stock on the date of grant with performance-based awards and units adjusted for the actual outcome of the underlying vesting conditions. The determination of fair value of options granted is based on Black-Scholes Model and market-based awards is based on Monte Carlo Simulations analysis.
Income Taxes	Income Taxes As a result of the Transaction, indie Semiconductor, Inc. became the holding company for ADK LLC. ADK LLC is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, ADK LLC is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by ADK LLC is passed through to and included in the taxable income or loss of its members, including indie, based on its economic interest held in the partnership. indie is taxed as a corporation and is subject to U.S. federal, state and local income taxes with respect to its allocable share of any taxable income or loss of ADK LLC, as well as any stand-alone income or loss generated by indie. Income taxes are recognized based upon our underlying annual blended federal, state and foreign income tax rates for the year. As the sole managing member of ADK LLC, indie Semiconductor, Inc. consolidates the financial results of ADK LLC and its subsidiaries. Further, indie Semiconductor Inc. is taxed as a corporation and is subject to U.S. federal, state and local income taxes with respect to its allocable share of any taxable income or loss of ADK LLC, as well as any stand-alone income or loss generated by indie. As of December 31, 2022, the Company's income tax benefit is attributable to its Non-US operations. The Company accounts for income taxes under the asset and liability method pursuant to ASC 740 for its corporate subsidiaries. Under this method, the Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary 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 income in the period that includes the enactment date. A valuation allowance is recorded for deferred tax assets if it is more likely than not that some portion or all of the deferred tax assets will not be realized based on all available positive and negative evidence. As of December 31, 2022, the Company continues to maintain a full valuation allowance against its deferred tax assets in the US and for material entities in China. The Company recognizes liabilities for uncertain tax positions based on a two-step process regarding recognition and measurement. The Company recognizes a tax benefit only if it is more likely than not the tax position will be sustained on examination by the local taxing authorities based on the technical merits of the position. The Company then measures the tax benefits recognized in the financial statements from such positions based on the largest benefit greater than 50% likelihood of being realized upon ultimate settlement with the related tax authority. The changes in recognition or measurement are reflected in the period in which the change in judgment occurs based on new information not previously available. As of December 31, 2022, the Company has not identified any uncertain tax positions. The Company records interest and penalties related to unrecognized tax benefits in its tax provision. As of December 31, 2022, no accrued interest or penalties are recorded on the consolidated balance sheet, and the Company has not recorded any related expenses.
Net Loss Per Share Attributable to Common Stockholders	Net Loss Per Share Attributable to Common StockholdersThe Company’s 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 for the period. The computation of net loss attributable to common stockholders is computed by deducting net earnings or loss attributable to non-controlling interests from the consolidated net earnings or loss. The diluted net loss per share attributable to common stockholders is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. The dilutive effect of these potential common shares is reflected in diluted earnings per share by application of the treasury stock method.
Stock Repurchase	Stock Repurchase The Company accounts for stock repurchases in the consolidated balance sheet by reducing common stock for the par value of the shares, reducing paid-in capital for the amount in excess of par to zero during the period in which the shares are repurchased, and recording the residual amount, if any, to retained earnings.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Issued Accounting Pronouncements Not Yet Adopted In June 2016, the FASB amended guidance related to impairment of financial instruments as part of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaces the incurred loss impairment methodology with an expected credit loss model for which a company recognizes an allowance based on the estimate of expected credit loss. This ASU requires entities to measure the impairment of certain financial instruments, including accounts receivable, based on expected losses rather than incurred losses. This ASU is effective for fiscal years beginning after December 15, 2022, with early adoption permitted, and will be effective for the Company beginning in 2023. The Company does not expect the impact to its consolidated financial statements to be material. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”), whereby lessees will be required to recognize for all leases at the commencement date a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use (“ROU”) asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. A modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the consolidated financial statements must be applied. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. The FASB issued ASU 2019-10-Financial Instruments-Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates in November 2019 and ASU 2020-05-Revenue from Contracts with Customers (Topic 606) and Leases (Topic 842): Effective Dates for Certain Entities in June 2020. The ASUs change some effective dates for ASU 2016-02 on leasing. After applying ASU 2019-10 and 2020-05, ASU 2016-02 is effective for annual periods beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2021. The Company applied the transition requirements on the adoption date of January 1, 2022, rather than at the beginning of the earliest comparative period presented. This approach allows for a cumulative effect adjustment in the period of adoption, and prior periods will not be restated. In addition, the Company elected the package of practical expedients permitted under the transition guidance, which does not require reassessment of prior conclusions related to contracts containing a lease, lease classification and initial direct lease costs. The Company also elected to use the hindsight practical expedient to consider any facts or circumstances that have changed through the January 1, 2022 adoption date that may affect the lease term due to renewal options and assess the impairment of the right-of-use asset. As an accounting policy election, the Company also excluded short-term leases (term of 12 months or less) from the balance sheet presentation and accounted for non-lease and lease components in a contract as a single lease component for certain asset classes. Effective January 1, 2022, the Company recorded the impact on its consolidated balance sheet from the recognition of ROU asset and lease liability of $10,344. The impact to its consolidated statements of operations, consolidated statements of comprehensive income (loss) and consolidated statements of cash flows is not material. See Note 20 — Leases, for additional details. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes, which simplifies the accounting for income taxes by removing certain exceptions to the general principles of ASC 740, Income Taxes. The amendments also improve consistent application of and simplify U.S. GAAP for other areas of ASC 740 by clarifying and amending existing guidance. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020 (and December 15, 2021 for nonpublic companies) and early adoption is permitted. Depending on the amendment, adoption may be applied on a retrospective, modified retrospective, or prospective basis. The Company adopted ASU 2019-12 as of January 1, 2022 on a prospective basis. The standard did not have a material impact on the Company’s consolidated financial statements and related disclosures. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. The new guidance eliminates Step 2 from the goodwill impairment test and instead requires that an entity measure the impairment of goodwill assigned to a reporting unit if the carrying value of assets and liabilities assigned to the reporting unit including goodwill exceed the reporting unit's fair value. The new guidance must be adopted for annual and interim goodwill tests in fiscal years beginning after December 15, 2022. The Company early adopted this update for the year ended December 31, 2021 and the impacts to its consolidated financial statements were not material. In August 2020, the FASB issued ASU 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the guidance on the issuer’s accounting for convertible debt instruments by removing the separation models for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. As a result, entities will not separately present in equity an embedded conversion feature in such debt. Instead, they will account for a convertible debt instrument wholly as debt, unless certain other conditions are met. The elimination of these models will reduce reported interest expense and increase reported net income for entities that have issued a convertible instrument that was within the scope of those models before the adoption of ASU 2020-06. Also, ASU 2020-06 requires the application of the if-converted method for calculating diluted earnings per share and treasury stock method will be no longer available. The provisions of ASU 2020-06 are applicable for fiscal years beginning after December 15, 2021, with early adoption permitted no earlier than fiscal years beginning after December 15, 2020. The Company early adopted this update on January 1, 2022 using the modified retrospective method of transition and the impact to its consolidated financial statements was not material. In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. ASU 2021-08 requires the company acquiring contract assets and contract liabilities obtained in a business combination to recognize and measure them in accordance with ASC 606, Revenue from Contracts with Customers. At the acquisition date, the company acquiring the business should record related revenue, as if it had originated the contract. Before the update such amounts were recognized by the acquiring company at fair value. The amendments in this update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption is permitted, including in interim periods, for any financial statements that have not yet been issued. The Company early adopted this update for the year ended December 31, 2021 and the impacts to its consolidated financial statements were not material.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2022

Basis of PresentationThe consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”). Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification (“ASC”) and the Accounting Standards Update (“ASU”) of the Financial Accounting Standards Board (“FASB”).

Consolidation

The consolidated financial statements include the consolidated accounts of the Company’s majority-owned subsidiary, ADK LLC, of which 85% was owned by indie as of December 31, 2022. ADK LLC’s consolidated financial statements include its wholly-owned subsidiaries indie Services Corporation, indie LLC and indie City LLC, all California entities, Ay Dee Kay Limited, a private limited company incorporated under the laws of Scotland, indie GmbH and Symeo GmbH, both of which are private limited liability companies incorporated under the laws of Germany, indie Kft, a limited liability company incorporated under the laws of Hungary, TeraXion Inc., a company incorporated under the laws of Canada, indie Semiconductor Israel Ltd., a private limited company incorporated under the laws of Israel, Ay Dee Kay S.A., a limited liability company incorporated under the laws of Argentina, indie Semiconductor Morocco, a limited liability company under the laws of Morocco, indie Semiconductor Japan KK, a limited liability company under the laws of Japan, indie Semiconductor Korea Branch, a limited liability company under the laws of Korea, Wuxi indie Microelectronics (“Wuxi”), a Chinese entity with 55% voting controlled and 38% owned by the Company as of December 31, 2022 and Wuxi’s wholly-owned subsidiaries, indie Semiconductor Suzhou, indie Semiconductor HK, Ltd and Shanghai Ziying Microelectronics Co., Ltd.All significant intercompany accounts and transactions of the subsidiaries have been eliminated in consolidation. Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations. The noncontrolling interest attributable to the Company’s less-than-wholly-owned subsidiary is presented as a separate component from stockholders’ equity (deficit) in the consolidated balance sheets, and a noncontrolling interest in the consolidated statements of operations and consolidated statements of stockholders’ equity (deficit) and noncontrolling interest

Consolidation

The consolidated financial statements comprise the financial statements of the Company, its wholly owned subsidiaries, and subsidiaries that it controls due to ownership of a majority voting interest. Subsidiaries are fully consolidated from the date of acquisition, being the date on which the Company obtains control, and continue to be consolidated until the date when such control ceases. All significant intercompany accounts and transactions are eliminated in consolidation. The Company recognizes noncontrolling interest related to its less-than-wholly-owned subsidiary as equity in the consolidated financial statements separate from the parent entity’s equity. The net loss attributable to noncontrolling interest is included in net loss in the consolidated statements of operations and comprehensive loss. The Company accounts for investments in which it has significant influence but not a controlling interest using the equity method of accounting.

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 reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the consolidated financial statements and the reported amounts of expenses during the reporting period. Actual results could differ materially from those estimates and assumptions.

On an ongoing basis, management evaluates its estimates assumptions, including those related to (i) the collectability of accounts receivable; (ii) write-down for excess and obsolete inventories; (iii) warranty obligations; (iv) the value assigned to and estimated useful lives of long-lived assets; (v) the realization of tax assets and estimates of tax liabilities and tax reserves; (vi) amounts recorded in connection with acquisitions; (vii) recoverability of intangible assets and goodwill; (viii) the recognition and disclosure of fair value of debt instruments, warrants and contingent liabilities; (ix) the computation of share-based compensation; (x) accrued expenses; and (xi) the recognition of revenue based on a cost-to-cost measure of progress for certain engineering services contracts. These estimates are based on historical data and experience, as well as various other factors that management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. The Company engages third-party valuation specialists to assist with estimates related to the valuation of certain financial instruments and assets associated with various contractual arrangements, and valuation of assets acquired in connection with acquisitions. Such estimates often require the selection of appropriate valuation methodologies and models, and significant judgment in evaluating ranges of assumptions and financial inputs. Actual results may differ from those estimates under different assumptions or circumstances.

Foreign Currency

Certain of the Company’s self-sustaining foreign subsidiaries use the local currency as their functional currency. Assets and liabilities for these subsidiaries have been translated into U.S. dollars at the exchange rates prevailing at the end of the period and results of operations at the average exchange rates for the period. Unrealized exchange gains and losses arising from the translation of the financial statements of our non-U.S. functional currency operations are accumulated in the cumulative translation adjustments account in accumulated other comprehensive loss.

For those foreign subsidiaries where the U.S. dollar is the functional currency, all foreign currency-denominated accounts are remeasured into U.S. dollars. Unrealized exchange gains and losses arising from remeasurements of foreign currency-denominated assets and liabilities are included within Other income (expense), net in the consolidated statements of operations and comprehensive loss. Gains and losses arising from international intercompany transactions that are of a long-term investment nature are reported in the same manner as translation gains and losses. Realized exchange gains and losses are included in net income for the periods presented.

Foreign Exchange Contracts

Forward Exchange Contracts

The Company’s forward exchange contracts, which are used to hedge anticipated U.S. dollar denominated sales and purchases as well as euro-denominated purchases, do not qualify for hedge accounting and are recognized at fair value. Any change in the fair value of these contracts is reflected as part of Other income (expense), net in the consolidated statement of operations.

Cash and Cash Equivalents

Cash and cash equivalents are defined as short-term, highly liquid investments with original maturities of 90 days or less at the date of purchase. As of December 31, 2022 and 2021, cash and cash equivalents consisted of money market funds and cash deposits that were held by reputable financial institutions in local jurisdictions of the Company’s subsidiaries including the U.S., Asia, Canada, Germany, and Great Britain denominated in U.S. dollars and local currency.

Restricted Cash

The Company’s restricted cash consists of cash that the Company is contractually obligated to maintain in accordance with the terms of its PacWest Revolving Line of Credit and accumulated credit limit.

Accounts Receivable

Accounts receivable consist of amounts due primarily from customers for product sales and engineering services agreements. Accounts receivable are recorded at the invoiced amount and do not bear interest. The Company accounts for potential losses in accounts receivable utilizing the allowance method. The Company closely monitors outstanding accounts receivable and considers its knowledge of customers, historical losses, and current economic conditions in establishing the allowance for doubtful accounts. The Company did not have material write-offs in any period presented.

Concentration of Credit Risk

The Company deposits its cash with large financial institutions. At times, the Company’s cash balances with individual banking institutions will exceed the limits insured by the FDIC, however, the Company has not experienced any losses on such deposits.

The Company extends credit to its customers based upon an evaluation of the customers’ financial condition and credit history and generally does not require collateral. Credit losses, if any estimated, are provided for in the consolidated financial statements and consistently have been within management’s expectations. See Note 16 — Revenue — Concentrations.

Inventory, Net

The Company values inventories at the lower of cost or net realizable value on a first-in, first-out basis. Cost is computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Inventories are reduced for write-downs based on periodic reviews for evidence of slow-moving or obsolete parts. The write-down is based on the comparison between inventory on hand and forecasted customer demand for each specific product. Once written down, inventory write-downs are not reversed until the inventory is sold or scrapped. Inventory write-downs are also established when conditions indicate the net realizable value is less than cost due to physical deterioration, technological obsolescence, changes in price level or other causes. All inventory provisions are recorded to cost of goods sold in the consolidated statement of operations.

Property and Equipment, Net

The Company’s property and equipment primarily consist of lab equipment, production tooling and masks, equipment, furniture and fixtures, leasehold improvements, and computer hardware and software. Property and equipment are recorded at cost less accumulated depreciation. Depreciation is calculated using the straight-line method based on the estimated useful lives of between three and seven years and for leasehold improvements the lesser of the remaining lease term or useful life. Major improvements are capitalized while routine repairs and maintenance are charged to expense when incurred.

Production masks with discernible future benefits, namely that they will be used to manufacture products to service customer demand, are capitalized and amortized over the estimated useful life of four years. Production masks being used for research and development or testing do not meet the criteria for capitalization and are expensed as research and development costs.

Business Combinations

The Company accounts for its business acquisitions under the ASC Topic 805, Business Combinations guidance for business combinations. The total cost of acquisitions is allocated to the underlying identifiable net assets based on their respective estimated fair values. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, asset lives and market multiples, among other items.

Intangible Assets, Net

The Company’s intangible assets include intangible assets acquired from business combinations, intellectual property (“IP”) and software licensed from third parties. The majority of the intangible assets have finite lives, except for those related to in-progress research and development (“IPR&D”), and are amortized over a period of two to ten years, on a straight-line basis, which approximates the pattern in which economic benefits of these assets are expected to be utilized. IPR&D is considered to have indefinite life until the abandonment or completion of the associated research and development efforts. If the development is abandoned in the future, these assets will be expensed in the period of abandonment. If and when the development activities are completed, management will make a determination of the useful lives and methods of amortization of these assets.

Intangible assets with finite lives are amortized on a straight-line basis over the expected period to be benefited by future cash flows. The Company monitors and assesses these assets for impairment on a periodic basis.

Goodwill

Goodwill represents the excess of the fair value of purchase consideration of an acquired business over the fair value of the identifiable net assets acquired. Goodwill is not amortized but is tested for impairment at a reporting unit level on an annual basis on October 1, or more frequently if circumstances change or an event occurs that would more likely than not reduce the fair value of a reporting unit below its carrying amount.

Significant judgment may be required when goodwill is assessed for impairment. Qualitative factors may be assessed to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If the assessment of all relevant qualitative factors indicates that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, a quantitative goodwill impairment test is not necessary. If the assessment of all relevant qualitative factors indicates that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, the Company will perform a quantitative goodwill impairment test. The quantitative impairment test for goodwill consists of a comparison of the fair value of a reporting unit with its carrying value, including the goodwill allocated to that reporting unit. If

the carrying value of a reporting unit exceeds its fair value, the Company will recognize an impairment loss equal to the amount of the excess, limited to the amount of goodwill allocated to that reporting unit. Application of the impairment test requires judgement, including the identification of reporting units, assignment of assets and liabilities to reporting units and the determination of fair value of each reporting unit.

Impairment of Long-Lived Assets

Impairment of Long-Lived AssetsThe Company reviews its long-lived assets, consisting of property and equipment, right-of-use assets and intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company regularly reviews its operating performance for indicators of impairment. Factors considered important that could trigger an impairment review include a significant underperformance relative to expected historical or projected future operating results, or a significant change in the manner of the use of the assets. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset (or asset group) to estimated undiscounted future cash flows expected to be generated by the asset (or asset group). If the carrying amount of an asset (or asset group) exceeds its estimated undiscounted future cash flows, an impairment charge is recognized to the extent the fair value is less than the carrying value.

Fair Value Measurements

Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between willing, able and knowledgeable market participants at the measurement date. Fair value measurements are not adjusted for transaction costs. In addition, a three-tiered hierarchy for inputs is used in management’s determination of fair value of financial instruments that emphasizes the use of observable inputs over the use of unobservable inputs by requiring that the observable inputs be used when available. Observable inputs are market participant assumptions based on market data obtained from sources independent of the Company. Unobservable inputs are the reporting entity’s own assumptions about market participants based on the best information available under the circumstances. In assessing the appropriateness of using observable inputs in making its fair value determinations, the Company considers whether the market for a particular security is “active” or not based on all the relevant facts and circumstances.

Valuation service providers typically obtain data about market transactions and other key valuation model inputs from multiple sources and, through the use of widely accepted valuation models, provide a single fair value measurement for individual securities for which a fair value has been requested under the terms of service agreements. The inputs used by the valuation service providers include, but are not limited to, market prices from recently completed transactions and transactions of comparable securities, interest rate yield curves, credit spreads, currency rates and other market observable information, as applicable. The valuation models consider, among other things, market observable information as of the measurement date as well as the specific attributes of the security being valued including its term, interest rate, credit rating, industry sector and, when applicable, collateral quality and other issue or issuer specific information. When market transactions or other market observable data is limited, the extent to which judgment is applied in determining fair value is greatly increased.

As a basis for considering such assumptions, a three-tier value hierarchy is used in management’s determination of fair value based on the reliability and observability of inputs as follows:

Level 1 — Valuations are based on unadjusted quoted prices in active markets that the Company has the ability to access for identical, unrestricted assets and do not involve any meaningful degree of judgment. An active market is defined as a market where transactions for the financial instrument occur with sufficient frequency and volume to provide pricing information on an ongoing basis;

Level 2 — Valuations are based on direct and indirect observable inputs other than quoted market prices included in Level 1. Level 2 inputs include quoted prices for similar assets in active markets and inputs other than quoted prices that are observable for the asset, such as the terms of the security and market-based inputs;

Level 3 — Valuations are based on techniques that use significant inputs that are unobservable. The valuation of Level 3 assets and liabilities requires the greatest degree of judgment. These measurements may be made under circumstances in which there is little, if any, market activity for the asset or liability. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment. In making the assessment, the Company considers factors specific to the asset. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In

such cases, the level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

The Company’s fair value measurements in each reporting period include cash equivalents, debt instruments, share-based awards, SAFEs, warrants, contingent considerations and earn-out liabilities. The Company’s financial instruments of accounts receivable, accounts payable and accrued expenses are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment date. The Company remeasures its simple agreements for future equity (“SAFEs”), warrants, contingent considerations and earn-out liabilities associated with business combinations using Level 3 fair value measurements.

Warrant Liability

Warrant LiabilityThe Company accounts for the public and private placement warrants issued in connection with the Transaction in accordance with ASC 815-40, Derivatives and Hedging—Contracts in Entity’s Own Equity (“ASC 815”), under which the warrants do not meet the criteria for equity classification and must be recorded as liabilities. As the warrants meet the definition of a derivative as contemplated in ASC 815, the warrants are measured at fair value at inception and at each reporting date in accordance with ASC 820, Fair Value Measurement, with changes in fair value recognized as a component of Other income (expense), net on the consolidated statement of operations.

Earn Out Liability

Earn-out Liability

The earn-out shares have been categorized into two components: (i) those associated with stockholders with vested equity at the closing of the Transaction that will be earned upon achievement of the earn-out milestones (the “Vested Shares”) and (ii) those associated with stockholders with unvested equity at the closing of the Transaction that will be earned over the remaining service period with the Company on their unvested equity shares and upon achievement of the earn-out milestones (the “Unvested Shares”). The Vested Shares were initially classified as liabilities in the consolidated balance sheet at fair value and subsequently were remeasured at the end of each reporting period. The estimated fair value of the earn-out liability was determined using a Monte Carlo Simulations analysis that simulated the future path of the Company’s stock price over the earn-out period. The assumptions utilized in the calculation are based on the achievement of certain stock price milestones including projected stock price, volatility, and risk-free rate. The change in fair value of the earn-out liability was recorded as part of Other income (expense), net in the consolidated statement of operations. Upon the achievement of the first earn-out milestones, the liability classified portion was remeasured to its fair value and reclassified to equity. The final change in fair value of the earn-out liability is recorded as part of Other income (expense), net in the consolidated statement of operations.

The Unvested Shares are equity-classified share-based compensation to be recognized over time.

Segment Information

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The chief operating decision maker (“CODM”) is the Chief Executive Officer. The Company has multiple business activities and are managed and held accountable for operations, operating results and plans for levels or components below the consolidated unit level by individual segment managers. However, discrete financial information is not reviewed by CODM as the operating results of the Company are reviewed by the CODM only on a consolidated basis. Accordingly, the Company has one operating segment, and therefore, one reportable segment.

Revenue

Revenue is primarily derived from the design and sale of semiconductor solutions. Revenue is recognized within the scope of ASC 606, Revenue from Contracts with Customers. The Company recognizes product revenue in the consolidated statement of operations when it satisfies performance obligations under the terms of its contracts and upon transfer of control at a point in time when title transfers either upon shipment to or receipt by the customer as determined by the contractual shipping terms of the contract, net of accruals for estimated sales returns and allowances. Sales and other taxes the Company collects, if any, are excluded from revenue. Product revenue arrangements do not contain significant financing components.

The Company generally offers a limited warranty to customers covering a period of twelve months which obligates the Company to repair or replace manufacturing defective products. The warranty is not sold separately and does not represent a separate performance obligation. Therefore, such warranties are accounted for under ASC 460, Guarantees, and the estimated

costs of warranty claims are accrued as cost of goods sold in the period the related revenue is recorded. Infrequently, the Company offers an extended limited warranty to customers for certain products. The Company accrues for known warranty and indemnification issues if a loss is probable and can be reasonably estimated.

Engineering services contracts with customers typically contain only one distinct performance obligation, which is primarily design services for integrated circuits (“ICs”) based on agreed upon specifications. Engineering services contracts typically also include the purchase, at the customer’s option, of the designed products at agreed upon prices subsequent to completion of the design services. The Company has determined that the option to purchase these products is not a material right and has not allocated transaction price to this provision.

For these engineering services arrangements, revenue is recognized over time as services are provided based on the terms of the contract on an input basis, using costs incurred as the measure of progress and is recorded as contract revenue in the consolidated statement of operations. The costs incurred represent the most reliable measure of transfer of control to the customer. Revenue is deferred for amounts billed or received prior to delivery of the services.

Practical Expedients and Elections

ASC 606 requires disclosure of the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied as of the reporting periods presented. The guidance provides certain practical expedients that limit this requirement and, therefore, disclosure of the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which revenue is recognized at the amount to which the Company has the right to invoice for services performed is not provided. The Company has elected not to disclose the aggregate amount of transaction prices associated with unsatisfied or partially unsatisfied performance obligations for contracts where these criteria are met.

The Company’s policy is to capitalize any incremental costs incurred to obtain a customer contract, only to the extent that the benefit associated with the costs is expected to be longer than one year. Capitalizable contract costs were not significant as of both December 31, 2022 and 2021, and accordingly, no costs have been capitalized.

The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. When shipping and handling costs are incurred after a customer obtains control of the products, the Company has elected to account for these as costs to fulfill the promise and not as a separate performance obligation. Shipping and handling costs associated with the distribution of products to customers are insignificant, but if incurred, are recorded in cost of goods sold generally when the related product is shipped to the customer.

Upon adoption of ASC 842, the Company elected the package of practical expedients permitted under the transition guidance, which does not require reassessment of prior conclusions related to contracts containing a lease, lease classification and initial direct lease costs. Further, the Company elected to exclude short-term leases (term of 12 months or less) from the balance sheet presentation and accounted for non-lease and lease components in a contract as a single lease for certain asset classes.

Cost of Goods Sold

Cost of goods sold includes cost of materials and contract manufacturing services, including semiconductor wafers processed by third-party foundries, costs associated with packaging, assembly, testing and shipping products. In addition, cost of goods sold includes the costs of personnel, certain royalties for embedded intellectual property, production tooling used in the manufacturing process, logistics, warranty, and amortization of production mask costs. Cost of goods sold also include amortization of certain intangible assets acquired through business combinations.

In addition to generating revenues from product shipments, the Company recognizes revenues related to certain engineering services contracts which help offset the costs of developing ICs for customers. The costs associated with fulfilling these contracts are expensed as incurred as research and development in the period incurred.

Research and Development Expense

Research and Development Expenses

Research and development expenses consist of costs incurred in performing product design and development activities including employee compensation and benefits, third-party fees paid to consultants, occupancy costs, pre-production engineering mask costs, engineering samples and prototypes, packaging, test development and product qualification costs. In certain situations, the Company enters into engineering services agreements with certain customers to develop ICs.

The costs incurred in satisfying these contracts are recorded as research and development expenses. Research and development expenses also include amortization of certain intangible assets acquired through business combinations. All research and development costs are expensed as incurred.

Selling, General and Administrative Expenses

Selling, General, and Administrative Expenses

Selling, general, and administrative expenses include employee compensation and benefits for sales, executive management, finance, accounting, legal, human resources and other administrative personnel. In addition, it includes marketing and advertising, outside legal, tax and accounting services, insurance, and occupancy costs and related overhead costs allocated based on headcount. Selling, general, and administrative costs also include amortization of certain intangible assets acquired through business combinations. Selling, general, and administrative costs are expensed as incurred.

Share-Based Compensation

The Company recognizes compensation expense for all share-based payment awards made to employees and directors. The fair value of share-based payment awards is amortized over the requisite service period, which is defined as the period during which an employee is required to provide service in exchange for an award. The Company generally uses a straight-line attribution method for all grants that include only a service condition. Awards with both performance and service conditions are expensed over the service period for each separately vesting tranche.

Share-based compensation expense recognized during the period includes actual expense on vested awards and expense associated with unvested awards. Forfeitures are recorded as incurred.

The determination of fair value of restricted and certain market- or performance-based stock awards and units is based on the value of the Company’s stock on the date of grant with performance-based awards and units adjusted for the actual outcome of the underlying vesting conditions. The determination of fair value of options granted is based on Black-Scholes Model and market-based awards is based on Monte Carlo Simulations analysis.

Income Taxes

As a result of the Transaction, indie Semiconductor, Inc. became the holding company for ADK LLC. ADK LLC is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, ADK LLC is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by ADK LLC is passed through to and included in the taxable income or loss of its members, including indie, based on its economic interest held in the partnership. indie is taxed as a corporation and is subject to U.S. federal, state and local income taxes with respect to its allocable share of any taxable income or loss of ADK LLC, as well as any stand-alone income or loss generated by indie.

Income taxes are recognized based upon our underlying annual blended federal, state and foreign income tax rates for the year. As the sole managing member of ADK LLC, indie Semiconductor, Inc. consolidates the financial results of ADK LLC and its subsidiaries. Further, indie Semiconductor Inc. is taxed as a corporation and is subject to U.S. federal, state and local income taxes with respect to its allocable share of any taxable income or loss of ADK LLC, as well as any stand-alone income or loss generated by indie. As of December 31, 2022, the Company's income tax benefit is attributable to its Non-US operations.

The Company accounts for income taxes under the asset and liability method pursuant to ASC 740 for its corporate subsidiaries. Under this method, the Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary 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 income in the period that includes the enactment date. A valuation allowance is recorded for deferred tax assets if it is more likely than not that some portion or all of the deferred tax assets will not be realized based on all available positive and negative evidence. As of December 31, 2022, the Company continues to maintain a full valuation allowance against its deferred tax assets in the US and for material entities in China.

The Company recognizes liabilities for uncertain tax positions based on a two-step process regarding recognition and measurement. The Company recognizes a tax benefit only if it is more likely than not the tax position will be sustained on examination by the local taxing authorities based on the technical merits of the position. The Company then measures the tax benefits recognized in the financial statements from such positions based on the largest benefit greater than 50% likelihood of being realized upon ultimate settlement with the related tax authority. The changes in recognition or measurement are reflected

in the period in which the change in judgment occurs based on new information not previously available. As of December 31, 2022, the Company has not identified any uncertain tax positions.

The Company records interest and penalties related to unrecognized tax benefits in its tax provision. As of December 31, 2022, no accrued interest or penalties are recorded on the consolidated balance sheet, and the Company has not recorded any related expenses.

Net Loss Per Share Attributable to Common Stockholders

Net Loss Per Share Attributable to Common StockholdersThe Company’s 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 for the period. The computation of net loss attributable to common stockholders is computed by deducting net earnings or loss attributable to non-controlling interests from the consolidated net earnings or loss. The diluted net loss per share attributable to common stockholders is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. The dilutive effect of these potential common shares is reflected in diluted earnings per share by application of the treasury stock method.

Stock Repurchase

The Company accounts for stock repurchases in the consolidated balance sheet by reducing common stock for the par value of the shares, reducing paid-in capital for the amount in excess of par to zero during the period in which the shares are repurchased, and recording the residual amount, if any, to retained earnings.

Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements Not Yet Adopted

In June 2016, the FASB amended guidance related to impairment of financial instruments as part of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaces the incurred loss impairment methodology with an expected credit loss model for which a company recognizes an allowance based on the estimate of expected credit loss. This ASU requires entities to measure the impairment of certain financial instruments, including accounts receivable, based on expected losses rather than incurred losses. This ASU is effective for fiscal years beginning after December 15, 2022, with early adoption permitted, and will be effective for the Company beginning in 2023. The Company does not expect the impact to its consolidated financial statements to be material.

Recently Adopted Accounting Pronouncements

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”), whereby lessees will be required to recognize for all leases at the commencement date a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use (“ROU”) asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. A modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the consolidated financial statements must be applied. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. The FASB issued ASU 2019-10-Financial Instruments-Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates in November 2019 and ASU 2020-05-Revenue from Contracts with Customers (Topic 606) and Leases (Topic 842): Effective Dates for Certain Entities in June 2020. The ASUs change some effective dates for ASU 2016-02 on leasing. After applying ASU 2019-10 and 2020-05, ASU 2016-02 is effective for annual periods beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2021.

The Company applied the transition requirements on the adoption date of January 1, 2022, rather than at the beginning of the earliest comparative period presented. This approach allows for a cumulative effect adjustment in the period of adoption, and prior periods will not be restated. In addition, the Company elected the package of practical expedients permitted under the

transition guidance, which does not require reassessment of prior conclusions related to contracts containing a lease, lease classification and initial direct lease costs. The Company also elected to use the hindsight practical expedient to consider any facts or circumstances that have changed through the January 1, 2022 adoption date that may affect the lease term due to renewal options and assess the impairment of the right-of-use asset. As an accounting policy election, the Company also excluded short-term leases (term of 12 months or less) from the balance sheet presentation and accounted for non-lease and lease components in a contract as a single lease component for certain asset classes. Effective January 1, 2022, the Company recorded the impact on its consolidated balance sheet from the recognition of ROU asset and lease liability of $10,344. The impact to its consolidated statements of operations, consolidated statements of comprehensive income (loss) and consolidated statements of cash flows is not material. See Note 20 — Leases, for additional details.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes, which simplifies the accounting for income taxes by removing certain exceptions to the general principles of ASC 740, Income Taxes. The amendments also improve consistent application of and simplify U.S. GAAP for other areas of ASC 740 by clarifying and amending existing guidance. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020 (and December 15, 2021 for nonpublic companies) and early adoption is permitted. Depending on the amendment, adoption may be applied on a retrospective, modified retrospective, or prospective basis. The Company adopted ASU 2019-12 as of January 1, 2022 on a prospective basis. The standard did not have a material impact on the Company’s consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. The new guidance eliminates Step 2 from the goodwill impairment test and instead requires that an entity measure the impairment of goodwill assigned to a reporting unit if the carrying value of assets and liabilities assigned to the reporting unit including goodwill exceed the reporting unit's fair value. The new guidance must be adopted for annual and interim goodwill tests in fiscal years beginning after December 15, 2022. The Company early adopted this update for the year ended December 31, 2021 and the impacts to its consolidated financial statements were not material.

In August 2020, the FASB issued ASU 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the guidance on the issuer’s accounting for convertible debt instruments by removing the separation models for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. As a result, entities will not separately present in equity an embedded conversion feature in such debt. Instead, they will account for a convertible debt instrument wholly as debt, unless certain other conditions are met. The elimination of these models will reduce reported interest expense and increase reported net income for entities that have issued a convertible instrument that was within the scope of those models before the adoption of ASU 2020-06. Also, ASU 2020-06 requires the application of the if-converted method for calculating diluted earnings per share and treasury stock method will be no longer available. The provisions of ASU 2020-06 are applicable for fiscal years beginning after December 15, 2021, with early adoption permitted no earlier than fiscal years beginning after December 15, 2020. The Company early adopted this update on January 1, 2022 using the modified retrospective method of transition and the impact to its consolidated financial statements was not material.

In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. ASU 2021-08 requires the company acquiring contract assets and contract liabilities obtained in a business combination to recognize and measure them in accordance with ASC 606, Revenue from Contracts with Customers. At the acquisition date, the company acquiring the business should record related revenue, as if it had originated the contract. Before the update such amounts were recognized by the acquiring company at fair value. The amendments in this update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption is permitted, including in interim periods, for any financial statements that have not yet been issued. The Company early adopted this update for the year ended December 31, 2021 and the impacts to its consolidated financial statements were not material.