Description of Business and Basis of Presentation (Policies) |
6 Months Ended |
|---|---|
Jun. 30, 2026 | |
| Accounting Policies [Abstract] | |
| Nature of Business | Nature of Business Aspen Aerogels, Inc. (the Company) is an aerogel technology company that designs, develops and manufactures innovative, high-performance aerogel materials used primarily in the energy industrial, sustainable insulation materials, and electric vehicle (EV) markets. The Company has provided high-performance aerogel insulation to the energy industrial and sustainable insulation markets for nearly two decades. The Company has developed and commercialized its proprietary line of PyroThin® aerogel thermal barriers for use in battery packs in EVs. The Company's core business is organized into two reportable segments: Thermal Barrier and Energy Industrial. The Company maintains its corporate offices in Northborough, Massachusetts. The Company has five wholly owned subsidiaries: Aspen Aerogels Rhode Island, LLC (Aspen RI), Aspen Aerogels Germany, GmbH, Aspen Aerogels Georgia, LLC (Aspen Georgia), Aspen Aerogels Mexico Holdings, LLC (Aspen Mexico), and OPE Manufacturer Mexico S de RL de CV (OPE), a maquiladora located in Mexico. OPE was established under an agreement between the Company and Prodensa Servicios de Consultora (Prodensa) during 2022 to assemble thermal barrier PyroThin products and operate an automated fabrication facility for PyroThin. Pursuant to the agreement, Prodensa owned OPE and charged a management fee, and the Company had an option to purchase OPE from Prodensa after a period of 18 months. The Company subsequently purchased OPE during 2025 for a nominal value in accordance with the terms of the agreement. During the period between inception and the exercise of the option to purchase OPE, OPE operations were consolidated within the Company financial statements as OPE was a variable interest entity with the Company as the primary beneficiary. The purchase of OPE was accounted for as an equity transaction. |
| Liquidity | Liquidity During the six months ended June 30, 2026, the Company incurred a net loss of $47.0 million, generated $17.9 million of cash from operations and used $3.2 million of cash for capital expenditures. The Company had unrestricted cash and cash equivalents of $151.7 million as of June 30, 2026. On August 19, 2024, the Company and Aspen RI (each, a Borrower and collectively, the Borrowers) entered into a Credit, Security and Guaranty Agreement (the Credit Agreement and the facilities provided thereunder, collectively, the MidCap Loan Facility) with MidCap Funding IV Trust, as agent (the Agent), MidCap Financial Trust, as term loan servicer (the Term Loan Servicer), and the financial institutions or other entities from time to time party thereto as lenders (the Lenders), with respect to the MidCap Loan Facility, which is comprised of (i) the Term Loan Facility in an aggregate principal amount of $125.0 million (the Term Loan Facility) and (ii) the Revolving Facility in an aggregate principal amount not to exceed the lesser of $100.0 million and the value of the borrowing base (defined as the sum of (x) 85% of certain eligible accounts of the Borrowers and (y) the lesser of 85% of the NOLV (as defined in the Credit Agreement) or 85% of the cost of certain eligible inventory of the Borrowers (the Borrowing Base) (the Revolving Facility). At closing of the transactions contemplated by the Credit Agreement, the Company drew $125.0 million from the Term Loan Facility and $43.0 million from the Revolving Facility. The proceeds of the borrowings at closing, net of fees and costs, were used to repurchase our outstanding convertible note issued to Wood River Capital, LLC, an entity affiliated with Koch Strategic Platforms, LLC, for $150.0 million and for general corporate purposes. The amount available to the Company at June 30, 2026 under the Revolving Facility was $13.2 million. On May 6, 2025, the Credit Agreement was amended to add Aspen Georgia as a Borrower and to amend the minimum Liquidity, the minimum EBITDA and the Liquidity amount trigger for a Cash Dominion Event (each as defined in the Amended MidCap Loan Facility (as defined in Note (7)). On December 16, 2025, the Credit Agreement was further amended to change the applicable minimum Liquidity threshold and to entirely remove the minimum EBITDA financial maintenance covenant. As of June 30, 2026, the Company is in compliance with the financial covenants set forth in the Amended MidCap Loan Facility. See Note (7) for further details. The Company expects its existing cash balance will be sufficient to support current operating requirements and capital expenditures required to support the Company’s existing business in the EV and energy industrial markets for at least the next twelve months from the date of this Quarterly Report on Form 10-Q. However, the Company expects that it will need to supplement its cash balance with anticipated cash flow from operations, as well as potential equity financings, debt financings, equipment leasing, sale-leaseback transactions, customer prepayments, or government grant and loan programs to provide the additional capital necessary to support the Company’s long-term growth strategy. |
| Unaudited Interim Financial Information | Unaudited Interim Financial Information The accompanying unaudited interim consolidated financial statements include the accounts of the Company and have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Certain information and disclosures normally included in the consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this Quarterly Report on Form 10-Q should be read in conjunction with the audited consolidated financial statements and accompanying notes in our Annual Report on Form 10-K for the year ended December 31, 2025, filed with the U.S. Securities and Exchange Commission on March 13, 2026, as amended on March 23, 2026 (the Annual Report). In the opinion of the Company’s management, the unaudited interim consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments that are of a normal recurring nature and necessary for the fair statement of the Company’s financial position as of June 30, 2026 and the results of its operations and stockholders’ equity for the three and six months ended June 30, 2026 and 2025 and the cash flows for the six-month periods then ended. The Company has evaluated subsequent events through the date of this filing. The Company’s results of operations for the three and six months ended June 30, 2026 are not necessarily indicative of the results to be expected for the year ending December 31, 2026 or any other period. |
| Use of Estimates | Use of Estimates The preparation of the consolidated financial statements requires the Company to make a number of estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to such estimates and assumptions include allowances for doubtful accounts, sales returns and allowances, product warranty costs, inventory valuation, the carrying amount of property and equipment, right-of-use assets, lease liabilities, stock-based compensation, and deferred income taxes. The Company evaluates its estimates and assumptions on an on-going basis using historical experience and other factors, including current economic conditions, which are believed to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances warrant. Illiquid credit markets, volatile equity markets and declines in business investment can increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in these estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. |
| Restricted Cash | Restricted Cash As of June 30, 2026, the Company had $1.7 million of restricted cash to support its outstanding letters of credit. |
| Concentration of Credit Risk | Concentration of Credit Risk Financial instruments, which potentially expose the Company to concentrations of credit risk, consist principally of accounts receivable. The Company’s customers are primarily insulation distributors, insulation contractors, insulation fabricators and select energy and automotive end-users located throughout the world. The Company performs ongoing credit evaluations of its customers’ financial condition and generally requires no collateral to secure accounts receivable. The Company maintains an allowance for doubtful accounts based on its assessment of the collectability of accounts receivable. The Company reviews the allowance for doubtful accounts quarterly. During the six months ended June 30, 2026 and 2025, the Company recorded a decrease in the allowance for estimated customer uncollectible accounts receivable of less than $0.1 million and less than $0.1 million, respectively. For the six months ended June 30, 2026 and 2025, two customers represented 51% and 72% of total revenue, respectively. At June 30, 2026, the Company had one customer that accounted for 43% of accounts receivable. At December 31, 2025, the Company had two customers which accounted for 41% and 13% of accounts receivable, respectively. |
| Revenue Recognition | Revenue Recognition The Company recognizes revenue in accordance with Accounting Standards Codification 606, Revenue from Contracts with Customers (ASC 606). See Note (3) for further details. |
| Recently Issued Accounting Standards | Recently Issued Accounting Standards From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (FASB) or other standard setting bodies. Recently issued standards typically do not require adoption until a future effective date. Prior to their effective date, the Company evaluates the pronouncements to determine the potential effects of adoption on its consolidated financial statements. Standards Implemented Since December 31, 2025 The Company has not implemented any accounting standards that had a material impact on its consolidated financial statements during the six months ended June 30, 2026. Standards to be Implemented In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (ASU 2024-03). ASU 2024-03 requires a public business entity to provide disaggregated disclosures of certain categories of expenses on an annual and interim basis including purchases of inventory, employee compensation, depreciation, and intangible asset amortization for each income statement line item that contains those expenses. ASU 2024-03 is effective for annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating ASU 2024-03 to determine its impact on the Company’s disclosures. Although there are several other new accounting pronouncements issued by the FASB, the Company does not believe any of these accounting pronouncements had or will have a material impact on its consolidated financial statements. |