Nature of Business and Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements and notes have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”) regarding interim financial information. Certain information and disclosures normally included in annual consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. The unaudited condensed consolidated financial statements and related notes should be read in conjunction with the audited consolidated financial statements and related notes as of and for the year ended December 31, 2023 included in the Company’s final prospectus dated March 19, 2024 (the “Prospectus”), as filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”) on March 21, 2024. In the opinion of management, the unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to state fairly the balance sheets, statements of operations and comprehensive loss, of redeemable convertible preferred stock and stockholders’ equity (deficit), and of cash flows for the interim periods presented, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year or any future period.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of Astera Labs, Inc. and its wholly owned subsidiaries in Canada, China, India, Israel, and Taiwan. All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the condensed 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 period. The Company’s significant estimates include, but are not limited to, the useful lives and recoverability of long-lived assets, the valuation of deferred tax assets, reserves for uncertain tax positions, the valuation of inventory, warranty reserve, the fair value of marketable securities, the grant date fair value of common stock warrants, the valuation and assumptions underlying stock-based compensation including the per share fair value of the Company’s common stock, and the incremental borrowing rate used in the Company’s operating lease calculations. 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 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 condensed consolidated financial statements in future periods, and actual results could differ from these estimates.
Reclassifications	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 income or cash flows for any of the periods presented.
Deferred Offering Costs	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.
Recently Issued Accounting Pronouncements Not Yet Adopted	Recently Issued Accounting Pronouncements Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”). ASU 2023-07 enhances the disclosures required for operating segments in the Company’s annual and interim consolidated financial statements. The disclosures required under ASU 2023-07 are also required for public entities with a single reportable segment. The ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company does not expect a material impact from the adoption of this guidance on its consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. The ASU is effective for public business entities for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company does not expect a material impact from the adoption of this guidance on its consolidated financial statements and related disclosures.

Nature of Business and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The accompanying unaudited condensed consolidated financial statements and notes have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”) regarding interim financial information. Certain information and disclosures normally included in annual consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. The unaudited condensed consolidated financial statements and related notes should be read in conjunction with the audited consolidated financial statements and related notes as of and for the year ended December 31, 2023 included in the Company’s final prospectus dated March 19, 2024 (the “Prospectus”), as filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”) on March 21, 2024. In the opinion of management, the unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to state fairly the balance sheets, statements of operations and comprehensive loss, of redeemable convertible preferred stock and stockholders’ equity (deficit), and of cash flows for the interim periods presented, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year or any future period.

Principles of Consolidation

The condensed consolidated financial statements include the accounts of Astera Labs, Inc. and its wholly owned subsidiaries in Canada, China, India, Israel, and Taiwan. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of the condensed 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 period. The Company’s significant estimates include, but are not limited to, the useful lives and recoverability of long-lived assets, the valuation of deferred tax assets, reserves for uncertain tax positions, the valuation of inventory, warranty reserve, the fair value of marketable securities, the grant date fair value of common stock warrants, the valuation and assumptions underlying stock-based compensation including the per share fair value of the Company’s common stock, and the incremental borrowing rate used in the Company’s operating lease calculations. 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 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 condensed 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 income or cash flows for any of the periods presented.

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.

Recently Issued Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”). ASU 2023-07 enhances the disclosures required for operating segments in the Company’s annual and interim consolidated financial statements. The disclosures required under ASU 2023-07 are also required for public entities with a single reportable segment. The ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company does not expect a material impact from the adoption of this guidance on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. The ASU is effective for public business entities for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company does not expect a material impact from the adoption of this guidance on its consolidated financial statements and related disclosures.