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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
6 Months Ended
Jun. 30, 2026
Accounting Policies [Abstract]  
Basis of Presentation
Basis of Presentation
The accompanying interim condensed consolidated financial statements and notes to the condensed consolidated financial statements have been prepared in accordance with accounting standards generally accepted in the United States of America (“U.S. GAAP”) for interim financial information as organized in the Accounting Standards Codification (“ASC”) administrated by the Financial Accounting Standards Board (“FASB”). The accompanying interim Condensed Consolidated Balance Sheet as of June 30, 2026, the interim Condensed Consolidated Statements of Operations and Comprehensive Loss, Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) for the three and six months ended June 30, 2026 and 2025, and the interim Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2026 and 2025, are unaudited. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited annual consolidated financial statements and, in management’s opinion, include adjustments consisting of only normal recurring adjustments, excluding the de-SPAC Transaction described in Note 3 - Reverse Recapitalization, necessary for the fair statement of the Company’s financial position as of June 30, 2026 and its result of operations for the three and six months ended June 30, 2026 and 2025 are not necessarily indicative of the results to be expected for the full fiscal year or any other period.
These unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the related notes included in the Company’s audited annual consolidated financial statements for the year ended December 31, 2025, included in the proxy statement/prospectus filed by CGC on May 6, 2026. The accounting policies applied in the preparation of these interim condensed consolidated financial statements are consistent with those disclosed in the Company’s audited consolidated financial statements and accompanying notes. The disclosures provided herein include only those policies that have been newly adopted or updated during the interim period, if any.
Prior to the receipt of the de-SPAC and PIPE Proceeds, the Company determined that its existing liquidity was not sufficient to fund operations for at least twelve months from the date of issuance of its audited annual consolidated financial statements, which raised substantial doubt about the Company’s ability to continue as a going concern. The Company has experienced net losses and negative cash flows from operations since its inception. The Company expects it will continue to incur significant costs including research and development expenses related to its ongoing operations until it successfully develops a commercial product and achieves revenues adequately to support the Company’s operations. However, Factorial believes that its cash on hand, including the net proceeds from the de-SPAC and PIPE Proceeds, will be
sufficient to meet its working capital and capital expenditure requirements for a period of at least twelve months from the date of this filing. Accordingly, management has concluded that the substantial doubt about the Company’s ability to continue as a going concern has been alleviated. Factorial may, however, need additional cash resources due to changed business conditions or other developments, including unanticipated delays in negotiations with Original Equipment Manufacturers (“OEMs”) and tier-one automotive suppliers or other suppliers, supply chain challenges, competitive pressures, and regulatory or permitting developments, among other possible developments. To the extent that Factorial’s current resources are insufficient to satisfy its cash requirements, Factorial may need to seek additional equity or debt financing. If the financing is not available, or if the terms of financing are less desirable than Factorial expects, Factorial may be forced to decrease its level of investment in product development or scale back its operations.
Principles of Consolidation
Principles of Consolidation
The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in the preparation of the consolidated financial statements in accordance with the provisions under ASC Topic 810 Consolidation.
Use of Estimates
Use of Estimates
The preparation of the financial statements in conformity with U.S. 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 consolidated financial statements, and the amounts of expenses during the reporting period. On an ongoing basis, the Company’s management evaluates its estimates, judgments, and methodologies. Significant estimates and assumptions in the consolidated financial statements include those related to warrant liabilities, convertible promissory notes and stock-based compensation. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ materially from these estimates under different assumptions or conditions. Changes in estimates are reflected in reported results in the period in which they become known.
Collaboration Arrangements and Partnership Agreements
Collaboration Arrangements and Partnership Agreements
The Company enters into collaborative arrangements with various parties individually through joint development agreements (“JDAs”) to evaluate and test its technology. The agreements are executed in anticipation of entering into either a purchasing agreement for the Company’s sellable products or jointly developing a commercialized product. As part of the JDAs, the counterparty may either reimburse the Company for certain costs incurred through a fixed fee payment or per unit payment or share certain costs with the Company.
The Company assesses each collaborative arrangement to determine whether it is in scope for ASC Topic 808, Collaborative Arrangements (“ASC 808”). In making the determination, the Company considers whether the arrangement involves joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards that are dependent on the commercial success of such activities. All of the JDAs entered into by the Company have been concluded to be arrangements within the scope of ASC 808. As a result, payments received/paid from/to the counterparties have been netted against the research and development expenses incurred by the Company.
The Company assesses each collaborative arrangement to determine whether it is in scope for ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). In making the determination, the Company considers if some or all aspects of the arrangement represent a transaction with a customer. All of the JDAs entered into by the Company to date have been concluded to be arrangements outside the scope of ASC 606. As a result, no revenue has been recognized by the Company.
For the three months ended June 30, 2026, and 2025, the Company recognized approximately $0.2 million and $0.2 million, respectively, and for the six months ended June 30, 2026 and 2025, the Company recognized $3.6 million and $0.2 million, respectively, in expense reimbursements from arrangements, which are recorded net within research and development expenses on the unaudited condensed consolidated statements of operations and comprehensive loss.
In February 2026, the Company entered into a new development agreement with PowerCo SE (“PowerCo”). The development agreement has various terms and conditions and has a term of fifteen months; however, PowerCo has the right to terminate under certain conditions. The Company entered into this development agreement for purposes of assessing its technology through evaluation and testing of its batteries.
In January 2026, the Company entered into a partnership agreement with a note holder as further described in Note 8- Convertible Promissory Note. The partnership agreement includes up to $0.9 million of consideration for the performance of research and development services to the note holder.
Deferred Transaction Costs
Deferred Transaction Costs
The Company complies with the requirements of ASC 340, Other Assets and Deferred Costs, with regards to transaction costs. Prior to the completion of the transaction (potential business combination with Cartesian Growth Corporation III), direct transaction costs are capitalized as deferred transaction costs. If the transaction is completed, the deferred transaction costs are charged to additional paid-in capital and offset the proceeds received from the potential business combination. As of June 30, 2026, the Company has completed the Merger, and all deferred transaction costs have been recognized.
Convertible Promissory Notes, Fair Value
Convertible Promissory Notes, Fair Value
In August 2025, the Company entered into Convertible Promissory Note Agreements with existing investors (“August 2025 Notes” or “Convertible Promissory Notes – Related parties”) where they can receive a total of $10.0 million. In January 2026, the Company entered into Note Purchase Agreements and a Convertible Promissory Note Agreement pursuant to which it could receive proceeds up to $5.3 million (the “January 2026 Notes” or “Convertible Promissory Notes”) from new investors. The Company determined that it is eligible for the fair value option election in connection with the Convertible Promissory Notes – Related Parties and the Convertible Promissory Notes. Both the Convertible Promissory Notes – Related Parties and the Convertible Promissory Notes meet the definition of a “recognized financial liability” which is an acceptable financial instrument eligible for the fair value option under ASC Topic 825 Financial Instruments (“ASC 825”). At the date of issuance, the fair value of the Convertible Promissory Notes – Related Parties and Convertible Promissory Notes were derived using the scenario-based method (“SBM”) as further described in Note 4 – Fair Value Measurements. The fair value option election was made to enhance the relevance and transparency of information presented related to the features embedded in the Convertible Promissory Notes.
Changes in the fair value of the Convertible Promissory Notes – Related Parties and the Convertible Promissory Notes are recorded as gains or losses in the Company’s consolidated statements of operations and comprehensive loss within other (expense) income, net, until the date of the Merger. At the Closing Date, all convertible promissory notes and accrued interest were exchanged as part of the de-SPAC Transaction, see Note 3 – Reverse Recapitalization, Note 4 – Fair Value Measures, Note 7 - Convertible Promissory Notes – Related Parties, and Note 8 - Convertible Promissory Notes, for further details.
Warrant Instruments
Warrant Instruments
The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in ASC 480, “Distinguishing Liabilities from Equity” (“ASC 480”), and ASC 815, “Derivatives and Hedging” (“ASC 815”). The assessment considers whether the warrants are freestanding financial instruments pursuant to ASC 480, meet the definition of a liability pursuant to ASC 480, and whether the warrants meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company’s own shares of Series A common stock $0.00001 per share (the “Series A Common Stock”) and whether warrant holders could potentially require “net cash settlement” in a circumstance outside of the Company’s control, among other conditions for equity classification. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end-date while the warrants are outstanding.
For issued or modified warrants that meet all the criteria for equity classification, the warrants are required to be recorded as a component of equity at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded as liabilities at their initial fair value on the date of issuance, and each balance sheet date thereafter. Changes in the estimated fair value of warrants classified as liabilities are recognized as a non-cash gain or loss on Company’s condensed consolidated statements of operations and comprehensive loss within other (expense) income, net.
Series B-1 and Series D Warrants
Series B-1 and Series D Warrants for the purchase of shares of redeemable convertible preferred stock are classified as liabilities on the condensed consolidated balance sheets at fair value upon issuance because the underlying shares of redeemable convertible preferred stock are redeemable outside of the control of Company. The initial liability recorded is
adjusted for changes in the fair value at each reporting date and recorded as other income/expense in the accompanying Company’s condensed consolidated statements of operations and comprehensive loss. The Company continued to adjust the convertible preferred stock warrant liability for changes in fair value until the exercise of the warrants, at which time the liability was reclassified to redeemable convertible preferred stock, and is reflected in the Company’s condensed consolidated statements of operations and comprehensive loss. The redeemable convertible preferred stock warrant liabilities increased or decreased each period based on the fluctuations of the fair value of the underlying security.
The fair value of the Series B-1 and Series D redeemable convertible preferred stock warrants are estimated using a Probability Weighted Equity Return Method (“PWERM”). Under this approach, the Company develops multiple scenarios and ascribes a probability weighting to each scenario and related estimated fair value. Key inputs and assumptions in the PWERM include the probability and the estimated value of the security in each liquidity scenario, in addition to scenario specific assumptions.
Public and Private Warrants
The Company accounts for the Public Warrants and Private Warrants (as defined below) in accordance with U.S. GAAP, under which the 13,800,000 redeemable public warrants for Series A Common Stock (“Public Warrants) and 6,800,000 redeemable private placement warrants for Series A Common Stock (the “Private Warrants”) were issued by CGC in connection with its initial public offering. Upon completion of the Merger, such warrant agreements were amended and remained outstanding as warrants of the Company. The Company evaluated the amended terms of the Public Warrants and concluded that equity classification remains appropriate. The amended terms of the Private Warrants provide for potential changes to the settlement amounts dependent upon the characteristics of the warrant holder, and, because the holder of a Private Warrant is not an input into the pricing of a fixed-for-fixed option on equity shares, such provision precluded the Private Warrants from being classified in equity. Accordingly, the Company reclassified the Private Warrants from equity to a liability and measured the Private Warrants at fair value. At the end of each reporting period, the Company will adjust the fair value of the Private Warrants using a Black-Scholes option pricing model whereby the expected volatility was estimated based on the historical volatility of a group of comparable publicly traded companies over a period commensurate with the expected remaining term of the warrants, as the Company’s common stock and Public Warrants do not have sufficient trading history to estimate volatility on a stand-alone basis.
Accounting Pronouncements
Recently Adopted Accounting Pronouncements
From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. After the completion of the re-recapitalization described in Note 3 – Reverse Recapitalization, the Company is considered an “emerging growth company” as defined in the Jumpstart Our Business Startups Act of 2012, as amended (the “Jobs Act”). The Jobs Act provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards. Thus, an emerging growth company can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. The Company has elected to avail itself of this extended transition period and, as a result, the Company will not be required to adopt new or revised accounting standards on the relevant dates on which adoption of such standards is required for other public companies.
In July 2025, the FASB issued ASU 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets (“ASU 2025-05”). ASU 2025-05 provides optional practical expedients intended to simplify the application of the current expected credit loss model to current trade accounts receivable and current contract assets arising from revenue transactions under Topic 606. The amendments will be effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuance. The Company adopted the guidance effective January 1, 2026. The adoption did not have a material impact on its accounting policies, financial position, results of operations, or cash flows, as the Company has no trade receivables and contract assets.
In December 2025, the FASB issued ASU 2025-12, Codification Improvements (Topic 815). The amendments in this ASU update the FASB Accounting Standards Codification for a broad range of Topics arising from technical corrections, unintended application of the Codification, clarifications, and other minor improvements. The amendments in this ASU are effective for all entities for annual periods beginning after December 15, 2026, with early adoption permitted. The Company early adopted ASU 2025-12 and the adoption did not have a material impact on its condensed consolidated financial statements.
New Accounting Pronouncements — Not Yet Adopted
In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses (DISE) (“ASU 2024-03”), requiring additional disclosure of the nature of expenses included in the income statement. The new standard requires disclosures about specific types of expenses included in the expense captions presented on the face of the income statement as well as disclosures about selling expenses. The amendment in this update applies to all public business entities and is effective for annual reporting periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027. The Company is currently evaluating the provisions of the amendments and the impact on its disclosures.
In December 2025, the FASB issued ASU 2025-11 Interim Reporting (Topic 270): Narrow-Scope Improvements. This standard clarifies current interim reporting requirements on Topic 270 and introduces a disclosure principle requiring entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. This standard will be effective for fiscal years beginning after December 15, 2027, with the option to apply it retrospectively. Early adoption is allowed. Currently, the Company is assessing the potential impact of this guidance on its financial statement disclosures.