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Summary of Significant Accounting Policies and Basis of Presentation | 9 Months Ended
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Sep. 30, 2025
Accounting Policies [Abstract] |
Summary of Significant Accounting Policies and Basis of Presentation | 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION Basis of Presentation and Principles of Consolidation The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial reporting. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2024, which was filed with the SEC on March 3, 2025. The results of operations for the three and nine months ended September 30, 2025 are not necessarily indicative of the results to be expected for the entire fiscal year or any future periods. The unaudited condensed consolidated financial statements include the accounts of Seer, Inc. and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated. Concentration of Credit Risk and Other Risks and Uncertainties Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, restricted cash, accounts receivable, and investments. The Company maintains bank deposits in federally insured financial institutions, and these deposits may exceed federally insured limits. The Company is exposed to credit risk in the event of default by the financial institutions holding its cash and cash equivalents and issuers of investments to the extent account balances exceed the amount insured by the Federal Deposit Insurance Corporation. For the three months ended September 30, 2025, the Company recognized revenue from two customers, that accounted for 15% and 10% of the Company's total revenue. For the nine months ended September 30, 2025, no single customer accounted for 10% or more of the Company's total revenue. For the three and nine months ended September 30, 2024, the Company recognized revenue from a related party that accounted for 14% and 20%, respectively, of the Company’s total revenue. For the three and nine months ended September 30, 2025, 48% and 39%, respectively, of the Company's total revenue, was generated outside of the United States, primarily from countries in Asia and Europe. For the three and nine months ended September 30, 2024, 29% and 32%, respectively, of the Company's total revenue, was generated outside of the United States, primarily from countries in Asia and Europe. As of September 30, 2025, there were two customers, which represented 16% and 11% of the Company's total accounts receivable balance. As of December 31, 2024, no single customer accounted for 10% or more of the total accounts receivable balance, including related party receivables. Significant Accounting Policies There have been no material changes to the significant accounting policies as of and for the three and nine months ended September 30, 2025, as compared to the significant accounting policies described in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the SEC. On July 4, 2025, the One Big Beautiful Bill Act (OBBBA) was enacted. The OBBBA makes permanent key elements of the Tax Cuts and Jobs Act of 2017, including 100% bonus depreciation and immediate deduction of domestic research and development costs, among other tax changes. The new legislation has multiple effective dates, with certain provisions effective in 2025 and others in the future. The Company evaluated the potential impact of the OBBBA legislation on its financial position, results of operations and cash flows. However, due to the Company’s valuation allowance position on its deferred tax assets, the OBBBA did not have a material impact on the Company’s effective tax rate or cash flow in the current fiscal year. Cash, Cash Equivalents and Restricted Cash The Company considers all highly liquid investments with an original maturity of three months or less at the date of purchase to be cash equivalents. Cash equivalents consist primarily of amounts invested in money market funds, U.S. Treasury securities, commercial paper, and corporate debt securities and are stated at fair value. Restricted cash represents cash held by a financial institution as security for a letter of credit issued to the lessor for one of the Company’s operating leases and is classified as noncurrent. The following table provides a reconciliation of cash, cash equivalents and restricted cash to the total amount presented in the unaudited condensed consolidated statements of cash flows (in thousands):
|  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |
Cash and cash equivalents |  | $ | 44,973 |  |  | $ | 37,622 |
Restricted cash |  |  | 524 |  |  |  | 524 |
Total cash, cash equivalents and restricted cash |  | $ | 45,497 |  |  | $ | 38,146 |
Recently Issued Accounting Pronouncements Not Yet Adopted In December 2023, the FASB issued ASU No. 2023-09, Improvements to Income Tax Disclosures (ASU 2023-09), which requires that an entity disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold. Further, the ASU requires certain disclosures of state versus federal income tax expense and taxes paid. The requirements of the ASU are effective for annual periods beginning after December 15, 2024, with early adoption permitted. The Company is currently in the process of evaluating the impact of this pronouncement on its consolidated financial statements and related disclosures. In November 2024, the FASB issued ASU No. 2024-03, Income statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40), which requires public business entities to disclose in the notes to the financial statements, among other things, specific information about certain costs and expenses including purchases of inventory, employee compensation, and depreciation and amortization expense for each caption on the income statement where such expenses are included. The update is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted, and the amendments may be applied prospectively to reporting periods after the effective date or retrospectively to all periods presented in the financial statements. The Company is currently evaluating the impact the new accounting standard will have on its expense disclosures in the notes to the consolidated financial statements and related disclosures. In July 2025, the FASB issued ASU No. 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which provides a practical expedient to measure credit losses on current accounts receivable and current contract assets that arise from transactions accounted for under Topic 606. The practical expedient assumes that current conditions as of the balance sheet date do not change for the remaining life of the asset when developing reasonable and supportable forecasts as part of estimating expected credit losses. The update is effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods, on a prospective basis, with early adoption permitted. The Company is currently in the process of evaluating the impact of this pronouncement on its consolidated financial statements and related disclosures.

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