| Nature of Business and Summary of Significant Accounting Policies | Nature of Business and Summary of Significant Accounting Policies Description of Business Astera Labs, Inc. (the “Company”) offers an Intelligent Connectivity Platform, comprised of semiconductor-based, high-speed, mixed-signal connectivity products that integrate a matrix of microcontrollers and sensors, and COSMOS, the Company’s software suite, which is embedded in its connectivity products and integrated into its customers’ systems. The Company’s patented software-defined platform approach delivers critical connectivity performance, enables flexibility and customization, and supports observability and predictive analytics. This approach aims to efficiently address the data, network, and memory bottlenecks, scalability, and other unique infrastructure requirements of its hyperscaler and system original equipment manufacturers (“OEMs”). Basis of Presentation The consolidated financial statements and accompanying notes were prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Principles of Consolidation The consolidated financial statements include the accounts of Astera Labs, Inc. and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Use of Estimates The preparation of consolidated financial statements in conformity with 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 date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. The Company’s significant estimates include, but are not limited to, revenue recognition, the valuation of deferred tax assets, reserves for uncertain tax positions, the grant date fair value of common stock awards, and the valuation and assumptions underlying stock-based compensation. By their nature, estimates are subject to an inherent degree of uncertainty and actual results could differ from those estimates. The Company assessed certain accounting matters and estimates that generally require consideration of forecasted information using the information reasonably available to the Company. Management is not aware of any specific event or circumstance that would require an update to estimates or judgments or a revision to the carrying value of assets or liabilities. These estimates and judgments may change as new events occur and additional information is obtained, which may result in changes being recognized in the Company’s consolidated financial statements in future periods, and actual results could differ from these estimates. Reclassifications Certain prior period balances were reclassified to conform to the current period’s presentation. None of these reclassifications had an impact on reported net loss, balance sheets, or cash flows for any of the periods presented. Initial Public Offering On March 22, 2024, the Company completed its initial public offering (the “IPO”) of 22,770,000 shares of its common stock, par value $0.0001 per share (the “Common Stock”), at a price to the public of $36.00 per share, which included 19,758,903 shares of Common Stock sold by the Company, inclusive of 2,970,000 shares sold by the Company pursuant to the full exercise of the underwriters’ over-allotment option, as well as 3,011,097 shares of Common Stock sold by certain of the Company’s existing stockholders. The Company received net proceeds of $672.2 million after deducting underwriting discounts and commissions of $39.1 million. Immediately prior to the closing of the IPO, the Company issued 90,890,650 shares of its Common Stock upon conversion on a one-for-one basis of all outstanding shares of its Series A Preferred Stock, par value $0.0001 per share, Series A-1 Preferred Stock, par value $0.0001 per share, Series B Preferred Stock, par value $0.0001 per share, Series B-1 Preferred Stock, par value $0.0001 per share, Series C Preferred Stock, par value $0.0001 per share, and Series D Preferred Stock, par value $0.0001 per share (collectively, the “Preferred Stock”), and such shares of Preferred Stock were cancelled, retired, and eliminated from the shares that the Company is authorized to issue and may not be reissued by the Company. Deferred Offering Costs The Company capitalized certain legal, accounting, and other fees and costs that were directly associated with in-process equity financings as deferred offering costs until such financings were consummated. Upon the consummation of the IPO, $6.2 million of such costs were recorded as a reduction of the proceeds generated from the offering, which was recognized in additional paid-in capital. Revenue Recognition The Company recognizes revenue upon transfer of control of promised goods and services in an amount that reflects the consideration it expects to receive in exchange for those goods and services. Under Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”), the Company applies the following five step approach: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when, or as, a performance obligation is satisfied. The following table presents revenue disaggregated by type (in thousands): Years Ended December 31, 2024 2023 2022 Product sales $ 393,115 $ 111,889 $ 78,234 Engineering services 3,175 3,905 1,638 Total revenue $ 396,290 $ 115,794 $ 79,872 Where an arrangement includes multiple performance obligations, the transaction price is allocated to each performance obligation on a relative standalone selling price (“SSP”) basis. The Company determines the SSP based on an observable standalone selling price when it is available, as well as other factors, including the price charged to customers and the Company’s overall pricing objectives, while maximizing observable inputs. Accounts receivable are recorded when the customer has been billed or the right to consideration is unconditional. The Company records deferred revenue when it has received consideration, or an amount of consideration is due from the customer, and the Company has a future obligation to transfer products or services. As of December 31, 2024 and 2023 , the Company had no deferred revenue. From time to time, the Company has contracts with initial terms that include performance obligations that extend beyond one year. As of December 31, 2024 , there were no unsatisfied performance obligations for contracts with an original expected term greater than one year. Product Sales The Company transacts with customers primarily pursuant to standard purchase orders for delivery of products and does not allow customers to cancel or change purchase orders within limited notice periods. The Company recognizes product sales when control transfers to the customer, generally at the time of product shipment from its facilities or at the time when products are received by customers depending on the shipping terms with the customers, in an amount that reflects the consideration the Company expects to receive in exchange for those goods, net of estimated sales returns, distributor price adjustments (“DPA”), rebates, and other customer incentives. The Company sells the majority of its products to distributors at a fixed list price. Distributors are authorized to resell its products to their customers at a range of individually negotiated price points based on a variety of factors, including customer, product, quantity, geography, and competitive differentiation. The majority of the distributors’ resales are priced at a discount from list price (the original purchase price). After the resale transaction is completed, the Company issues credit memos to the distributor for the price adjustments. Sales to most distributors are made under programs common in the semiconductor industry whereby distributors receive certain price adjustments, or DPA, to meet individual competitive opportunities. These programs may include credits granted to distributors or price protection credits when the Company’s standard published prices are lowered from the price the distributor paid for product still in its inventory. In determining the transaction price, DPAs are considered variable consideration that reduce the amount of revenue recognized. The Company’s policy is to estimate such price adjustments based on the Company’s historical prices and contractual terms using the expected value method. To date, actual DPAs have been materially consistent with the provisions the Company has made, based on its historical estimates. However, because of the inherent nature of estimates, there is always a risk that there could be significant differences between actual amounts and the Company’s estimates. The Company also considers the constraint on estimates of variable consideration when estimating the total transaction price. The Company’s customer programs involve rebates, which are designed to serve as sales incentives to resellers of the Company’s products in various target markets. The Company accounts for rebates as a reduction to revenue and accrues for estimated rebates based on the amount the Company expects to be claimed by customers. Revenue is recognized net of taxes collected, which are subsequently remitted to governmental authorities. Shipping and handling fees are included in cost of revenue and are recognized as activities to fulfill the promise to transfer the good. Consideration payable includes cash amounts that the Company pays, or expects to pay, to a customer, and is included in accrued expenses and other current liabilities. Consideration payable also includes credits or other items. The Company accounts for consideration payable as a reduction of the transaction price, and therefore, of revenue, unless the payment to the customer is in exchange for a distinct good or service that the customer transfers to the Company. During 2023 and 2022 , the Company issued to a customer warrants to purchase shares of the Company’s common stock. The Company accounts for the warrants as consideration payable to a customer as the Company did not receive a distinct good or service in exchange for the warrants. The shares underlying the warrants vest upon the achievement of specified tranches of global payments by the customer and its affiliates. As it becomes probable that the performance-based vesting conditions underlying the warrants will be achieved and the related revenue is recognized, the Company recognizes the related grant date fair value of the warrants as a reduction of revenue for each sales transaction in proportion to total expected cumulative sales volume resulting in achievement of the vesting conditions. See Note 8 Common Stock Warrants . The Company applies the practical expedient to not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less. The Company applies the practical expedient to expense sales commissions when incurred because the amortization period would have been one year or less. Product Warranties The Company’s products are generally subject to a product warranty, which provides for the estimated future costs of replacement upon shipment of the products. The products carry a standard one-year warranty. The warranty accrual is estimated primarily based on historical claims compared to historical revenue and assumes that the Company will have to replace products subject to a claim. Warranty expenses were not material for the years ended December 31, 2024, 2023 and 2022 . Accrued warranty was not material as of December 31, 2024, and 2023. The Company does not allow its distributors to return overstocked, obsolete, and discontinued products. Engineering Services Certain revenue contracts may include performance obligations related to engineering services. The Company recognizes revenue allocated to these performance obligations as certain milestones are completed and upon acceptance by the customer of contract deliverables. Cost of Revenue Cost of revenue, including both cost of product sales revenue and cost of engineering services revenue, includes the purchase price of materials, such as wafers processed by third-party foundries, packaging for finished goods, assembly, shipping, amortization of capitalized production masks, logistics and quality assurance, write-downs for excess and obsolete inventory, royalties on our production products, and personnel costs including salaries, stock-based compensation expense, employee bonus and benefits, and allocation of general corporate expenses including allocated facilities expenses. Research and Development Expenses Research and development expenses consist of costs incurred in performing research and development activities and include salaries, stock-based compensation expense, employee bonus and benefits, pre-production engineering mask costs, overhead costs and prototype wafer, packaging and test costs, and allocated facilities expenses. Research and development costs are expensed as incurred. Sales and Marketing Expenses Sales and marketing expenses consist of personnel costs including salaries, stock-based compensation expense, employee bonus and benefits, samples to potential customers, product marketing and conferences, travel and entertainment costs, and allocation of general corporate expenses including allocated facilities expenses. Advertising costs are expensed as incurred and were not material for the years ended December 31, 2024, 2023 and 2022 . General and Administrative Expenses General and administrative expenses consist primarily of personnel costs including salaries, stock-based compensation, and employee benefits related to corporate, finance, legal and human resource functions, contractor and professional services fees, audit and compliance expenses, insurance costs, and general corporate expenses including allocated facilities expenses. Stock-Based Compensation The Company records stock-based compensation expense for all stock-based awards, including stock options, restricted stock units (“RSUs”) , performance stock units (“PSUs”), and purchase rights issued under the Employee Stock Purchase Plan (“ ESPP”), made to employees, non-employees, and directors based on the fair value at the date of grant. The fair value of RSUs and PSUs is based on the underlying common stock at the date of grant. The fair value of stock options granted and purchase rights issued under the ESPP for purposes of calculating stock-based compensation expense is estimated on the grant date using the Black-Scholes-Merton pricing model. The Black-Scholes-Merton pricing model requires the Company to make assumptions and judgments about the inputs used in the calculation, including the expected term, the volatility of the Company’s common stock, risk-free interest rate, and expected dividend yield. The expected term represents the period that the Company’s stock options and purchase rights under the ESPP are expected to be outstanding. The expected term assumptions are determined based on the vesting terms, exercise terms, and contractual lives of the options. The expected volatility is based on a blended simple average between historical volatility of a group of comparable publicly traded companies and our common stock price over a period equal to the expected term of the awards. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant for periods corresponding with the expected life of the option. The Company’s expected dividend yield input is zero as it has not historically paid, nor does it expect in the future to pay, cash dividends on its common stock. Stock-based compensation expense for options, service-based RSUs, and purchase rights issued under the ESPP Plan are recognized as expense on a straight-line basis over the requisite service or offering period. Stock-based compensation expense with performance condition are recognized in the period in which vesting becomes probable using the accelerated attribution method over the requisite service period for each separately vesting portion of the award. The Company accounts for forfeitures as they occur. Cash and Cash Equivalents As of December 31, 2024 and 2023, cash and cash equivalents consist of cash held in sweep accounts, checking accounts, money market funds, U.S. treasury and agency securities, and commercial paper. The Company considers all highly liquid instruments purchased with an original maturity of three months or less at the date of purchase, to be cash equivalents. Cash equivalents are recorded at fair value. Marketable Securities Marketable securities consist primarily of commercial paper, U.S. treasury and agency securities, corporate debt securities, foreign government bonds, and asset-backed securities. The Company’s investments are all highly liquid and available for use in current operations, including those with maturity dates beyond one year, and therefore the Company classifies these securities within current assets on its consolidated balance sheet. The Company considers its investments with original maturities of three months or less at the date of purchase to be cash equivalents. Investments not considered cash equivalents are classified as marketable securities on the Company’s consolidated balance sheets. The Company classifies and accounts for its marketable securities as available-for-sale, and it carries such securities at fair value with unrealized gains and losses excluded from earnings and reported net of tax as a separate component of stockholders’ deficit in accumulated other comprehensive income until the security is sold or matures. During the years ended December 31, 2024, 2023, and 2022, in connection with its available-for-sale securities, the Company recorded pretax unrealized gain of $0.2 million, gain of $0.5 million, and loss of $0.2 million, respectively, with no associated tax benefit in other comprehensive income or loss. If an available-for-sale debt security’s fair value declines below its amortized cost basis, the Company evaluates whether it intends to sell the security, or whether it more-likely-than-not will be required to sell the security before the recovery of its amortized cost basis. If either condition is met, the Company records an impairment loss on the security. If neither condition is met, the Company evaluates whether the decline is the result of credit-related factors, in which case the Company records the credit-related portion of the impairment loss. There were no impairment charges for the years ended December 31, 2024, 2023, and 2022. Accounts Receivable, Net Accounts receivable are recorded at the invoiced amount, net of DPAs, and allowance for credit losses. The Company performs periodic credit evaluations of its customers’ financial condition and does not require collateral from them. Amounts considered uncollectible are charged against the allowance account in the period they are deemed uncollectible. As of December 31, 2024 and 2023, t he allowance for credit losses was not material to the consolidated financial statements. There was no impairment charges for the years ended December 31, 2024, 2023, and 2022 . The Company regularly monitors collections and payments from customers and maintains an allowance for credit losses for estimated losses resulting from the inability of customers to make required payments. Management estimates its allowance for credit losses by considering factors including historical credit loss experience and current conditions, such as the length of time accounts receivable are past due, customer payment histories, any specific customer collection issues identified, current market conditions which may affect customer financial condition, and reasonable and supportable forecasts of future credit losses. The Company writes off accounts receivable that have become uncollectible. Inventory The Company’s inventory, which includes raw materials, work-in-progress, and finished goods, is stated at the lower of cost or net realizable value. Inventory cost, which includes materials purchase cost, inbound freight and capitalized overhead, is computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Net realizable value is the estimated selling price of the Company’s products in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The carrying value of inventory is reduced for estimated excess and obsolete inventory. Excess and obsolete inventory reductions are determined based on assumptions about product expiration, future demand, and market conditions, and are included in cost of revenue in the consolidated statements of operations and comprehensive loss. Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets included prepayments for technology subscription service, cloud computing arrangements, insurance premiums, restricted cash, and accrued interest income. As of December 31, 2024 and 2023, the Company’s restricted cash balance was not material and is primarily associated with collateral for the Company’s credit card. Property and Equipment, Net Property and equipment is stated at cost, net of accumulated depreciation. Depreciation expense is recorded on a straight-line basis over the estimated useful lives of the assets. The estimated useful lives of the Company’s property and equipment are as follows: Asset Category Estimated Useful Life Production mask costs 5 years Office furniture 5 years Laboratory equipment 3 years Servers and workstations 3 years Leasehold improvements Lesser of asset useful life or remaining lease term Impairment of Long-Lived Assets The Company assesses the impairment of long-lived assets, which consist primarily of property and equipment, whenever events or changes in circumstances indicate that such assets might be impaired and the carrying value may not be recoverable. Events or changes in circumstances that may indicate that an asset is impaired include significant decreases in the market value of an asset, significant underperformance relative to expected historical or projected future results of operations, a change in the extent or manner in which an asset is utilized, significant declines in the estimated fair value of the overall Company for a sustained period, shifts in technology, loss of key management or personnel, changes in the Company’s operating model, or strategy and competitive forces. If events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable and the expected undiscounted future cash flows attributable to the asset are less than the carrying amount of the asset, an impairment loss equal to the excess of the asset’s carrying value over its fair value is recorded. Fair value is generally determined based on the present value of estimated expected future cash flows using a discount rate commensurate with the risk involved, quoted market prices or appraised values, depending on the nature of the asset. There were no impairments charges of long-lived assets for the years ended December 31, 2024, 2023, and 2022. Leases The Company determines at contract inception whether an arrangement is a lease based on its ability to control a physically distinct asset and determines the classification of the lease as either operating or finance. For all leases, the Company combines all components of the lease including related non-lease components as a single component. The Company’s operating lease right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments related to the lease. The Company has also elected to utilize the short-term lease recognition exemption and, for those leases that qualify, the Company has not recognized operating lease ROU assets or operating lease liabilities. The Company does not have any finance leases as of December 31, 2024 and 2023 . Operating lease ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. Operating lease ROU assets also include any initial direct costs and prepayments less lease incentives. As the Company’s leases do not provide an implicit rate, the Company uses its collateralized incremental borrowing rate based on the information available at the lease commencement date, including lease term, in determining the present value of lease payments. Lease terms may include options to extend or terminate the lease when the Company is reasonably certain that it will exercise the option. Lease expense is recognized on a straight-line basis over the lease term in the consolidated statements of operations and comprehensive loss. Certain lease agreements may contain variable costs such as utilities and common area maintenance. Variable lease costs are expensed when the cost is incurred. Income Taxes The Company is subject to income taxes in the United States and certain foreign jurisdictions. Significant judgment is required in determining the Company’s provision for income taxes and income tax assets and liabilities, including evaluating uncertainties in the application of accounting principles and complex tax laws. The Company uses the asset and liability method to account for income taxes. Current income tax expense or benefit represents the amount of income taxes expected to be payable or refundable for the current year. Under this method, deferred income tax assets and liabilities are determined based on differences between the financial statement reporting and tax bases of assets and liabilities and net operating loss and credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates applied to taxable income in the years in which those temporary differences are expected to be recovered or settled. A valuation allowance is established when necessary to reduce deferred tax assets to the amount expected to be realized. The Company accounts for uncertain tax positions in accordance with ASC 740-10, Accounting for Uncertainty in Income Taxes . The Company recognizes the tax effects of an uncertain tax position only if such position is more-likely-than-not to be sustained based solely on its technical merits as of the reporting date and only in an amount more-likely-than-not to be sustained upon review by the tax authorities. Net Loss per Share The Company follows the two-class method when computing net loss per common share when shares are issued that meet the definition of participating securities. The two-class method determines net income (loss) per share of common stock and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires income (loss) available to common stockholders for the period to be allocated between common stock and participating securities based upon their respective rights to receive dividends as if all income (loss) for the period had been distributed. Prior to the automatic conversion into shares of common stock as a result of the Company’s IPO, the Company’s redeemable convertible preferred stock contractually entitled the holders of such shares to participate in dividends, but did not contractually require the holders of such shares to participate in the Company’s losses. Subsequent to the IPO, the Company has no participating securities. Basic net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, less shares subject to repurchase. The diluted net loss per share is computed by giving effect to all potentially dilutive securities outstanding for the period using the treasury stock method or the if-converted method. For periods in which the Company reports net losses, diluted net loss per common share is the same as basic net loss per common share, because all potentially dilutive securities are anti-dilutive. Commitments and Contingencies Liabilities for loss contingencies arising from claims, assessments, litigation, fines, and penalties and other sources are recorded when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. The Company does not accrue for contingent losses that, in its judgment, are considered to be reasonably possible. However, if the Company determines that a contingent loss is reasonably possible and the loss or range of loss can be estimated, the Company discloses the possible loss in the consolidated financial statements. Legal costs incurred in connection with loss contingencies are expensed as incurred. Redeemable Convertible Preferred Stock The Company records all shares of redeemable convertible preferred shares at their respective fair values less issuance costs on the dates of issuance. The redeemable convertible preferred shares were recorded outside of stockholders’ deficit because, in the event of certain liquidation events, considered not solely within the Company’s control, such as a change in control event and sale of all or substantially all of the Company’s assets, the redeemable convertible preferred shares would become redeemable at the option of the holders. Foreign Currency Transactions The functional currency of the Company’s foreign subsidiaries is the U.S. dollar. All foreign currency transactions are initially measured and recorded in U.S. dollars using the exchange rate on the date of the transaction. Foreign currency denominated monetary assets and liabilities are remeasured and recorded at the end of each reporting period using the exchange rate at that date. Foreign exchange gains and losses were not material for the years ended December 31, 2024, 2023, and 2022. Fair Value Measurements Fair value is defined 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. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value: Level 1. Quoted prices for identical assets and liabilities in active markets. Level 2. Assets and liabilities valued based on observable market data for similar instruments, such as quoted prices for similar assets or liabilities or other inputs that are observable or can be corroborated by observable market data. Level 3. Unobservable inputs reflecting the Company’s assumptions, consistent with reasonably available assumptions made by other market participants. These valuations require significant judgment. The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. The carrying amount of the Company’s financial instruments, including cash equivalents, accounts receivable, and accounts payable, approximates their respective fair values because of their short maturities. Concentrations of Credit Risk and Major Customers Revenue by location is determined by the billing address of the Company’s customers, which include distributors who purchase the Company’s products and resell them. The Company had the following customers that individually comprised 10% or more of its revenue: Years Ended December 31, 2024 2023 2022 Customer A 36 % 24 % * Customer B 24 % 37 % 82 % Customer C 11 % * * Customer D * 18 % * Customer E * * 14 % *Less than 10% of total revenue The Company had the following customers that individually comprised 10% or more of its accounts receivable, net: As of December 31, 2024 December 31, 2023 Customer A 24 % 39 % Customer B 13 % 27 % Customer C 22 % * Customer F 31 % * *Less than 10% of total accounts receivable, net Concentration of Supply Risk The Company relies on a single manufacturing partner for integrated circuits. The Company also relies on a limited number of other manufacturing partners for its modules, boards, and integrated circuit substrates. While alternative providers could be identified, the Company is subject to supply and pricing risks. Accounting Pronouncements Recently Adopted In November 2023, the FASB issued ASU 2023-07, Segmen |
