The preparation of consolidated financial statements in conformity with US GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reported periods. The most significant estimates included in these consolidated financial statements are the useful lives of long-lived assets, revenue recognition, sales return reserve, inventory write downs, the realizability of deferred tax assets, the measurement of stock-based compensation, and the valuation of the Company’s various financial instruments. The complexity of the estimation process and factors relating to assumptions, risks and uncertainties inherent with the use of the estimates affect the amount of revenue and related expenses reported in the Company’s consolidated financial statements. Internal and external factors can affect the Company’s estimates. Actual results could differ from these estimates under different assumptions or conditions.

Business combinations are accounted for under the acquisition method. The Company recognizes the assets acquired and liabilities assumed in business combinations on the basis of their fair values at the date of acquisition. The Company assesses the fair value of assets acquired, including intangible assets, and liabilities assumed using a variety of methods. Each asset acquired and liability assumed is measured at fair value from the perspective of a market participant. The method used to estimate the fair values of intangible assets incorporates significant estimates and assumptions regarding the estimates a market participant would make in order to evaluate an asset, including a market participant’s use of the asset, future cash inflows and outflows, probabilities of success, asset lives, and the appropriate discount rates. Any excess purchase price over the fair value of the net tangible and intangible assets acquired is allocated to goodwill. Transaction costs and restructuring costs associated with a business combination are expensed as incurred.

During the measurement period, which extends no later than one year from the acquisition date, the Company may record certain adjustments to the carrying value of the assets acquired and liabilities assumed with the corresponding offset to goodwill. After the measurement period, all adjustments are recorded in the consolidated statements of operations within other income (expense), net.

The functional currency of the Company is the U.S. dollar. The functional currency of the Company’s wholly-owned foreign subsidiaries is generally the same as the entity’s local currency. Accordingly, the asset and liability accounts of our foreign operations are translated into U.S. dollars using the current exchange rate in effect at the balance sheet date and equity accounts are translated into U.S. dollars using historical rates. The revenues and expenses are translated using the weighted-average exchange rates in effect during the period, and gains and losses from foreign currency translation adjustments are included as a component of accumulated other comprehensive loss in the consolidated balance sheets. Foreign currency translation adjustments are recorded in other comprehensive loss in the consolidated statements of operations and comprehensive loss.

Foreign currency transaction gains and losses are a result of the effect of exchange rate changes on transactions denominated in currencies other than the functional currency. Foreign currency transaction gains and losses are recorded in other income (expense), net in the consolidated statements of operations and comprehensive loss.

The Company operates as one reportable and operating segment, which relates to the sale and production of lidar sensor kits. The Company’s chief operating decision maker (“CODM”) is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance and allocating resources. The profitability of the Company’s product group is not a determining factor in allocating resources and the CODM does not evaluate profitability below the level of the consolidated company.

In accordance with ASC 606, Revenue from Contracts with Customers (“ASC 606”), revenue is recognized when a customer obtains control of promised products or services. The amount of revenue recognized reflects the consideration that the Company expects to be entitled to receive in exchange for these products or services. To achieve the core principle of this standard, the Company performs the following five steps:

The Company considers the terms and conditions of revenue contracts and its customary business practices in identifying contracts with its customers. It is determined that a contract with a customer exists when the contract is approved, each party’s rights regarding the product or services to be transferred and the payment terms for the product or services can be identified, it is determined that the customer has the ability and intent to pay and the contract has commercial substance. The Company applies judgment in determining the customer’s ability and intent to pay, which is based on a variety of factors, including the customer’s historical payment experience or, in the case of a new customer, credit and financial information pertaining to the customer. Accounts receivable are due under normal trade terms, typically three months or less.

either on its own or together with other resources that are readily available from third parties or from the Company, and are distinct in the context of the contract, whereby the transfer of the product or services is separately identifiable from other promises in the contract. The Company’s performance obligations consist of (i) sale of lidar sensor kits and (ii) product development and validation services. Amounts billed to customers related to shipping and handling are classified as revenue, and the Company has elected to recognize the cost of shipping activities that occur after control has transferred to the customer as a fulfillment cost rather than a separate performance obligation. All related shipping costs are accrued and recognized within cost of revenue when the related revenue is recognized.

The transaction price is determined based on the consideration to which the Company expects to be entitled in exchange for transferring product or services to the customer. Variable consideration is included in the transaction price if the Company judges that it is probable that a significant future reversal of cumulative revenue under the contract will not occur. The Company does not have a material amount of variable consideration in its agreements with customers. None of the Company’s contracts contain a significant financing component. All taxes assessed by a governmental authority on a specific revenue-producing transaction collected by the Company from a customer are excluded from the transaction price. The Company’s general terms and conditions for its contracts do not contain a right of return that allows the customer to return products and receive a credit.

If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation based on a relative standalone selling price (“SSP”). In 2022, 2021 and 2020 the Company did not have a material volume of contracts that required the allocation of transaction price to multiple performance obligations.

Revenue is recognized at the time the related performance obligation is satisfied by transferring the promised product or service to a customer. Revenue is recognized when control of products or services is transferred to customers, in an amount that reflects the consideration that the Company expects to receive in exchange for those products or services. The Company generates all of its revenue from contracts with customers and applies judgment in identifying and evaluating any terms and conditions in contracts which may impact revenue recognition. Revenue is recognized at a point in time when control of the goods is transferred to the customer, generally occurring upon shipment. Product sales to certain customers may require customer acceptance due to performance acceptance criteria that is considered more than a formality. For these product sales, revenue is recognized upon the expiration of the customer acceptance period. The obligation to provide services is generally satisfied over time, with the customer simultaneously receiving and consuming the benefits as the Company satisfies its performance obligations. For these service projects, the Company bills and recognizes revenue as the services are performed. For these arrangements, control is transferred to the customer as the Company’s inputs incurred to complete the project; therefore, revenue is recognized over the service period with the measure of progress using the input method based on labor costs incurred to total labor cost (cost-to-cost) as the services are provided. Revenue from services that were recognized over time were not material to date.

The Company expenses the incremental costs of obtaining a contract when incurred because the amortization period for these costs would be less than one year. These costs primarily relate to sales commissions and are expensed as incurred in sales and marketing expense in the Company’s consolidated statements of operations and comprehensive loss. The incremental cost of obtaining a contract for the years ended December 31, 2022 and 2021 was $2.9 million, $2.2 million and $0.3 million, respectively.

The Company’s general terms and conditions for its contracts do not contain a right of return that allows the customer to return products and receive a credit, however it has in practice permitted returns of its sensor kits in limited circumstances. Allowances for sales returns, which reduce revenue, are estimated using historical experience and were immaterial as of December 31, 2022 and 2021. Actual returns in subsequent periods have been consistent with estimated amounts.

Revenue allocated to remaining performance obligations represents the transaction price allocated to the performance obligations that are unsatisfied, or partially unsatisfied at the reporting date. The composition of unsatisfied performance obligations consists mainly of the Company’s deferred extended warranty services, and to a lesser extent, deferred product revenue and development and validation services for which the Company has an obligation to perform, and has not yet recognized as revenue in the consolidated financial statements.

The Company follows the two-class method when computing net loss per common share. The two-class method determines net loss per common share for common and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires income available to common stockholders for the period to be allocated between common and participating securities based upon their respective rights to receive dividends as if all income for the period had been distributed.

Basic net loss per common share attributable to common stockholders is computed by dividing the net loss by the weighted average number of common shares outstanding for the period. Diluted net loss attributable to common stockholders is computed by adjusting net loss attributable to common stockholders to reallocate undistributed earnings based on the potential impact of dilutive securities. Diluted net loss per common share attributable to common stockholders is computed by dividing the diluted net loss attributable to common stockholders by the weighted average number of common shares outstanding for the period, including potential dilutive common shares assuming the dilutive effect of common stock equivalents.

The Company’s redeemable convertible preferred stock contractually entitles the holders of such shares to participate in dividends but does not contractually require the holders of such shares to participate in losses of the Company. Accordingly, in periods in which the Company reports a net loss, such losses are not allocated to such participating securities. In periods in which the Company reports a net loss attributable to common stockholders, diluted net loss per common share attributable to common stockholders is the same as basic net loss per common share attributable to common stockholders, since dilutive common shares are not assumed to have been issued if their effect is anti-dilutive. The Company reported a net loss attributable to common stockholders for the years ended December 31, 2022, 2021 and 2020.

Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains an allowance for expected credit losses representing its best estimate of expected credit losses related to its existing accounts receivable and their net realizable value. The allowance is determined using a combination of factors including historical losses adjusted to take into account current market conditions and customers’ financial condition, the amount of receivables in dispute, and the current receivables aging and current payment patterns. The Company writes off accounts receivable against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote.

Inventory consists primarily of raw materials, work-in-process, and finished goods and is stated at the lower of cost or estimated net realizable value. Costs are computed under the standard cost method, which approximates actual costs determined on the first-in, first-out basis. The Company charges cost of revenue for write-downs of inventories which are obsolete or in excess of anticipated demand based on purchase commitments, production needed to fulfil the warranty obligations, consideration of product marketability and product development plans, historical revenue and assumptions about future demand and market conditions.

Property and equipment are stated at cost less accumulated depreciation. Expenditures for repairs and maintenance are charged to expense as incurred. Upon disposition, the cost and related accumulated depreciation and amortization are removed from the accounts and resulting gain or loss is reflected in the consolidated statement of income. Depreciation is computed using the straight-line method over the estimated useful lives of the assets (see Note 5).

The Company evaluates events and changes in circumstances that could indicate carrying amounts of long-lived assets, including intangible assets, may not be recoverable. When such events or changes in circumstances occur, the Company assesses the recoverability of long-lived assets by determining whether the carrying value of such assets 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 those assets, the Company records an impairment charge in the period in which such determination is made. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets.

Goodwill represents the excess of the purchase price over the fair value of net tangible and identified intangible assets acquired in a business combination. Goodwill is not amortized but is evaluated at least annually for impairment or when a change in facts and circumstances indicate that the fair value of the goodwill may be below the carrying value.

Goodwill is tested for impairment at the reporting unit level annually in the fourth quarter, or more frequently when events or changes in circumstances indicate that the asset might be impaired. Examples of such events or circumstances include, but are not limited to, a significant adverse change in legal or business climate, an adverse regulatory action or unanticipated competition. The Company has determined that it operates in a single operating segment and has a single reporting unit.

Prior to performing the impairment test, the Company assesses qualitative factors to determine whether the existence of events or circumstances would indicate that it is more likely than not that the fair value of the reporting unit was less than the carrying amount. If after assessing the totality of events or circumstances, the Company were to determine that it is

The quantitative impairment test involves comparing the fair value of the reporting unit to the carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets, goodwill is not impaired, and no further testing is required. If the fair value of the reporting unit is less than the carrying value, the Company measures the amount of impairment loss, if any, as the excess of the carrying value over the fair value of the reporting unit.

The Company applies the fair value measurement accounting standard whenever other accounting pronouncements require or permit fair value measurements. Fair value is defined in the accounting standard as 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 is based on inputs to valuation techniques that are used to measure fair value that are either observable or unobservable. Observable inputs reflect assumptions market participants would use in pricing an asset or liability based on market data obtained from independent sources, while unobservable inputs reflect a reporting entity’s pricing based upon their own market assumptions. The fair value hierarchy consists of the following three levels:

Warrant liabilities consist of Private Placement warrants. The Private Placement warrants are not redeemable for cash so long as they are held by the initial purchasers or their permitted transferees but may be redeemable for common stock if certain other conditions are met. If the Private Placement warrants are held by someone other than the initial purchasers or their permitted transferees, the Private Placement warrants are redeemable by the Company and exercisable by such holders subject to certain conditions, such as the reported closing price of our common stock equaling or exceeding $18.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within a 30 trading-day period ending three business days before the Company sends the notice of redemption to the holders of Private Placement warrants. The Company evaluated the Private Placement warrants and concluded that they do not meet the criteria to be classified within stockholders’ equity. The agreement governing the Private Placement warrants includes a provision, the application of which could result in a different settlement value for the Private Placement warrants depending on their holder. Because the holder of an instrument is not an input into the pricing of a fixed-for-fixed option on the Company’s ordinary shares, the Private Placement warrants are not considered to be “indexed to the Company’s own stock.” This provision precludes the Company from classifying the Private Placement warrants in stockholders’ equity.

As the Private Placement warrants meet the definition of a derivative, the Company recorded these warrants as liabilities on the consolidated balance sheet at fair value, with subsequent changes in their respective fair values recognized in the consolidated statements of operations and comprehensive loss at each reporting date.

Financial instruments that potentially subject the Company to credit risk consist primarily of cash, cash equivalents, restricted cash and accounts receivable. Cash, cash equivalents and restricted cash are deposited with federally insured commercial banks in the U.S. and UK, Hong Kong, China and European Union. At times, cash balances in the U.S. may be in excess of federal insurance limits. As of December 31, 2022 and 2021, the Company had cash, cash equivalents and restricted cash with financial institutions in US of $123.5 million and $184.2 million, respectively. As of December 31, 2022 and 2021, the Company also had cash on deposit with financial institutions in countries other than the US of approximately $0.8 million and $0.5 million, respectively, that was not federally insured.

To reduce credit risk, the Company considers customer creditworthiness, past transaction history with the customer, current economic industry trends, and changes in customer payment terms when determining the collectability of specific customer accounts. Past due balances over 90 days and other higher risk amounts are reviewed individually for collectability. Based on management’s assessment, the Company provides for estimated uncollectible amounts through a charge to earnings and a credit to valuation allowance. Balances that remain outstanding after the Company has used reasonable collection efforts are written off through a charge to the valuation allowance and a credit to accounts receivable.

•Common Stock Valuation – The fair value of the shares of common stock underlying the Company’s stock-based awards issued after the Colonnade Merger is based on the grant date closing fair market value of the Company’s common stock. Before closing of the Colonnade Merger, the fair value of the shares of common stock underlying the Company’s stock-based awards was historically determined by management and approved by the board of directors. Because there was no public market for the Company’s common stock, the board of directors determined the fair value of the common stock at the time of grant of the option by considering a number of objective and subjective factors, including contemporaneous valuations performed by an unrelated third-party specialist, valuations of comparable public companies, operating and financial performance, the lack of liquidity of capital stock, and general and industry-specific economic outlook. Valuations performed by the third-party valuation specialist used methodologies, approaches, and assumptions consistent with the American Institute of Certified Public Accountants Accounting and Valuation Guide, Valuation of Privately-Held-Company Equity Securities Issued as Compensation (“AICPA” Accounting and Valuation Guide). In relation to options, the Board intends all options granted to be exercisable at a price per share not less than the per share fair value of the common stock underlying those options on the date of grant.

The fair values of the restricted stock awards and restricted stock units were determined based on the fair value of the Company’s common stock on the grant date. The Company recognizes stock-based compensation expense over the requisite service period. Forfeitures are accounted for as they occur. The Company’s policy for issuing stock upon stock option exercise is to issue new common stock.

Deferred tax liabilities and assets are recognized for the expected future tax consequences of temporary differences between financial statement carrying amounts and the tax basis of assets and liabilities and net operating loss (NOL) and tax credit carryforwards. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. Due to its history of operating losses, the Company has recorded a full valuation allowance against its deferred tax assets as of December 31, 2022 and 2021.

The Company accounts for uncertainty in income taxes using a two-step approach to recognize and measure uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of the related appeals or litigation processes, if any. An uncertain tax position that meets a more likely than not standard based on its technical merit would then be evaluated under the measurement step to determine the largest tax benefit that the taxpayer more likely than not will realize. The Company classifies any liabilities for unrecognized tax benefits as current to the extent that the Company anticipates payment of cash within one year. Interest and penalties related to uncertain tax positions are recognized in the provision for income taxes.

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which aligns the requirements for capitalizing implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The Company adopted this ASU as of January 1, 2021, which did not have a material impact on its consolidated financial statements and related disclosures.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes. ASU 2019-12 simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and by improving consistent application of other areas of Topic 740. The Company adopted this ASU as of January 1, 2021, which did not have a material impact on its consolidated financial statements and related disclosures.

In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which amends ASC 805 to add contract assets and contract liabilities to the list of exceptions to the recognition and measurement principles that apply to business combinations and to require that an entity (acquirer) recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606. The amendments in this ASU are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years and should be applied prospectively to business combinations occurring on or after the effective date of the amendments. Early adoption of the amendments is permitted, including adoption in an interim period. In the fourth quarter of 2022, Ouster adopted the amendments and recognized contract assets acquired and contract liabilities assumed in the mergers in accordance with ASC 606. Ouster has elected to apply the practical expedient under paragraph ASC 805-20-30-29(b) of the adopted amendments and allocated the transaction price based on the standalone selling price of each performance obligation in the contract with a customer for all contracts acquired in the mergers. As of December 31, 2022, the adoption of this new standard had no impact on the Company’s consolidated financial statements and related footnote disclosures.