Document and Entity Information - USD ($) $ / shares in Units, $ in Billions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Mar. 18, 2026 |
Jun. 30, 2025 |
|
| Document Information [Line Items] | |||
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Annual Report | true | ||
| Current Fiscal Year End Date | --12-31 | ||
| Document Period End Date | Dec. 31, 2025 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Document Transition Report | false | ||
| Entity Registrant Name | LITHIUM AMERICAS CORP. | ||
| Entity Central Index Key | 0001966983 | ||
| Entity File Number | 001-41788 | ||
| Entity Incorporation, State or Country Code | A1 | ||
| Entity Tax Identification Number | 00-0000000 | ||
| Entity Address, Address Line One | 3260 – 666 Burrard Street | ||
| Entity Address, City or Town | Vancouver | ||
| Entity Address, State or Province | BC | ||
| Entity Address, Postal Zip Code | V6C 2X8 | ||
| City Area Code | 778 | ||
| Local Phone Number | 656-5820 | ||
| Title of 12(b) Security | Common Shares, no par value per share | ||
| Entity Listing, Par Value Per Share | $ 0 | ||
| Trading Symbol | LAC | ||
| Security Exchange Name | NYSE | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | true | ||
| Entity Ex Transition Period | false | ||
| ICFR Auditor Attestation Flag | false | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 0.6 | ||
| Entity Common Stock, Shares Outstanding | 347,369,613 | ||
| Documents Incorporated by Reference [Text Block] | Portions of the definitive proxy statement relating to the Registrant’s 2026 Annual Stockholders Meeting, which will be filed with the U.S. Securities and Exchange Commission within 120 days of December 31, 2025, are incorporated by reference into Part III of this Annual Report on Form 10-K. |
||
| Auditor Firm ID | 271 | ||
| Auditor Location | Vancouver, Canada | ||
| Auditor Name | PricewaterhouseCoopers LLP | ||
| Auditor Opinion [Text Block] | Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Lithium Americas Corp. and its subsidiaries (the Company) as of December 31, 2025 and 2024, and the related consolidated statements of loss, of changes in equity and non-controlling interest and of cash flows for the years then ended, including the related notes (collectively referred to as the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for the years then ended in conformity with accounting principles generally accepted in the United States of America. |
CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|||
| Common stock, par value | $ 0 | $ 0 | ||
| Common stock, unlimited authorized | Unlimited | Unlimited | ||
| Common stock, shares issued | 314,335 | 218,465 | ||
| Common stock, shares outstanding | 314,335 | 218,465 | ||
| Assets | $ 2,579,048 | $ 1,044,944 | ||
| Receivables | 4,110 | 557 | ||
| Prepaids and deposits | 1,920 | 7,733 | ||
| Mineral properties, plant and equipment | 1,344,004 | 398,948 | ||
| Deferred financing costs | 311,808 | 11,529 | ||
| Other assets, non-current | 6,734 | 27,852 | ||
| Liabilities | 992,399 | 99,604 | ||
| Accounts payable | 87,848 | 700 | ||
| Accrued liabilities | 83,441 | 51,764 | ||
| Lease liabilities, current | 5,530 | 5,816 | ||
| Lease liabilities, non-current | 15,668 | 16,821 | ||
| Warrant obligation (Note 3) | 234,091 | |||
| DOE Loan | [1] | 350,987 | 0 | |
| Reclamation liabilities | 473 | 288 | ||
| Other liabilities, non-current | 3,500 | 3,500 | ||
| JV Warrants [Member] | ||||
| Warrant obligation (Note 3) | 150,295 | 0 | ||
| Variable Interest Entities (VIEs) [Member] | ||||
| Assets | 2,100,000 | 900,000 | ||
| Cash and Restricted cash | 412,600 | 452,300 | ||
| Receivables | 2,500 | 100 | ||
| Prepaids and deposits | 400 | 6,100 | ||
| Mineral properties, plant and equipment | 1,300,000 | 402,500 | ||
| Deferred financing costs | 311,800 | 0 | ||
| Other assets, non-current | 6,600 | 27,500 | ||
| Liabilities | 670,100 | 71,800 | ||
| Accounts payable | 87,400 | 700 | ||
| Accrued liabilities | 74,500 | 24,100 | ||
| Lease liabilities, current | 5,400 | 5,600 | ||
| Lease liabilities, non-current | 15,700 | 16,700 | ||
| DOE Loan | 351,000 | 0 | ||
| Reclamation liabilities | 500 | 300 | ||
| Other liabilities, non-current | 3,500 | 3,500 | ||
| Variable Interest Entities (VIEs) [Member] | JV Warrants [Member] | ||||
| Warrant obligation (Note 3) | 101,900 | 0 | ||
| Nonrecourse [Member] | Variable Interest Entities (VIEs) [Member] | ||||
| Liabilities | $ 639,800 | $ 50,900 | ||
| ||||
CONSOLIDATED STATEMENTS OF LOSS - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Operating expenses | ||
| Exploration expenditures | $ (19) | $ (202) |
| General and administrative expenses (Note 15) | (52,822) | (28,096) |
| Total operating expenses | (52,841) | (28,298) |
| Other income (expense) | ||
| Transaction costs (Note 16) | (32,307) | (22,214) |
| Gain on LAC and JV warrant obligations (Note 3) | 160,025 | 0 |
| Loss on convertible debt and conversion feature (Note 11) | (171,040) | 0 |
| Gain/(loss) on investments measured at fair value (Note 6) | 711 | (6,662) |
| Other income | 9,190 | 14,541 |
| Total other expense | (33,421) | (14,335) |
| Net loss | (86,262) | (42,633) |
| Net income (loss) attributable to: | ||
| Common stockholders | (122,087) | (42,528) |
| Non-controlling interest | $ 35,825 | $ (105) |
| Net loss per share attributable to common stockholders, basic (Note 13) | $ (0.5) | $ (0.21) |
| Net loss per share attributable to common stockholders, diluted (Note 13) | $ (0.5) | $ (0.21) |
| Weighted average number of common shares outstanding, basic | 243,658 | 200,817 |
| Weighted average number of common shares outstanding, diluted | 243,658 | 200,817 |
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY AND NON-CONTROLLING INTEREST - USD ($) shares in Thousands, $ in Thousands |
Total |
Common Stock [Member] |
Additional paid-in capital [Member] |
Accumulated deficit [Member] |
Total equity attributable to LAC shareholders [Member] |
Non - controlling interest [Member] |
|---|---|---|---|---|---|---|
| Beginning Balance, shares at Dec. 31, 2023 | 161,778 | |||||
| Beginning Balance at Dec. 31, 2023 | $ 384,929 | $ 383,063 | $ 15,020 | $ (13,154) | $ 384,929 | $ 0 |
| Issuance of common stock, net of issuance costs (Note 12) | 262,146 | $ 262,146 | 262,146 | |||
| Issuance of common stock, net of issuance costs, shares (Note 12) | 55,000 | |||||
| Shares issued on conversion of stock-based awards (Note 12) | $ 9,859 | (9,859) | ||||
| Shares issued on conversion of stock-based awards, shares (Note 12) | 1,687 | |||||
| Stock-based compensation (Note 12) | 10,898 | 10,898 | 10,898 | |||
| Investment of General Motors in Lithium Nevada Ventures LLC (Note 4) | 330,000 | 19,559 | 19,559 | 310,441 | ||
| Net Income (Loss) | (42,633) | (42,528) | (42,528) | (105) | ||
| Ending Balance, shares at Dec. 31, 2024 | 218,465 | |||||
| Ending Balance at Dec. 31, 2024 | 945,340 | $ 655,068 | 35,618 | (55,682) | 635,004 | 310,336 |
| Shares issued under public offerings, net of issuance costs (Note 12) | 401,138 | $ 401,138 | 401,138 | |||
| Shares issued under public offerings, net of issuance costs (Note 12), shares | 68,237 | |||||
| Shares issued on conversion of Orion convertible debt (Note 11) | 215,205 | $ 215,205 | 215,205 | |||
| Shares issued on conversion of Orion convertible debt (Note 11), Shares | 25,794 | |||||
| Shares issued on conversion of stock-based awards (Note 12) | $ 8,491 | (8,491) | ||||
| Shares issued on conversion of stock-based awards, shares (Note 12) | 1,839 | |||||
| Stock-based compensation (Note 12) | 11,228 | 11,228 | 11,228 | |||
| Capital contribution to Lithium Nevada Ventures LLC (Note 4) | 100,000 | (38,355) | (43,379) | (81,734) | 181,734 | |
| Net Income (Loss) | (86,262) | (122,087) | (122,087) | 35,825 | ||
| Ending Balance, shares at Dec. 31, 2025 | 314,335 | |||||
| Ending Balance at Dec. 31, 2025 | $ 1,586,649 | $ 1,279,902 | $ 0 | $ (221,148) | $ 1,058,754 | $ 527,895 |
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|||
| Operating activities | ||||
| Net loss | $ (86,262) | $ (42,633) | ||
| Adjustments for: | ||||
| Depreciation | 46 | 46 | ||
| Stock-based compensation (Note 12) | 6,206 | 5,166 | ||
| Amortization of right-of-use asset | 1,000 | 946 | ||
| Gain on LAC and JV warrant obligations (Note 3) | (160,025) | 0 | ||
| Loss on convertible debt and conversion feature (Note 11) | 171,040 | 0 | ||
| (Gain)/loss on investments measured at fair value (Note 6) | (711) | 6,662 | ||
| Other items | 2,417 | 36 | ||
| (Increase)/decrease in receivables | (1,146) | 3,726 | ||
| Decrease in prepaids and deposits | 127 | 301 | ||
| Increase/(decrease) in accounts payable | 13,687 | (22) | ||
| Increase/(decrease) in accrued liabilities | (6,669) | 13,632 | ||
| Operating lease payments, net of non-cash interest accrual | (932) | (873) | ||
| Net cash used in operating activities | (61,222) | (13,013) | ||
| Investing activities | ||||
| Additions to mineral properties, plant and equipment | (765,044) | (177,693) | ||
| Net cash used in investing activities | (765,044) | (177,693) | ||
| Financing activities | ||||
| Proceeds from convertible debt and production payment arrangements, net of issuance and transaction costs (Note 11) | 211,754 | 0 | ||
| Proceeds from issuance of non-controlling interest (Note 4) | 100,000 | 330,000 | ||
| Proceeds from public offerings, net of issuance costs (Note 12) | 401,181 | 262,146 | ||
| Proceeds from DOE Loan (Note 3) | 435,000 | 0 | ||
| Deferred financing costs | (5,450) | (2,235) | ||
| Principal payments on finance lease obligations | (4,783) | (836) | ||
| Net cash provided by financing activities | 1,137,702 | 589,075 | ||
| Net increase in cash and restricted cash | 311,436 | 398,369 | ||
| Cash and restricted cash, beginning of year | [1] | 594,173 | 195,804 | |
| Cash and restricted cash, end of year | [1] | $ 905,609 | $ 594,173 | |
| ||||
CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Statement of Cash Flows [Abstract] | ||
| Restricted cash | $ 337.4 | $ 0.3 |
Cybersecurity Risk Management, Strategy and Governance |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Cybersecurity Risk Management, Strategy, and Governance [Line Items] | |
| Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] | Cybersecurity Risk Management and Strategy The Company operates across a complex and interconnected digital landscape and recognizes the ongoing need to identify, assess and manage material risks associated with information technology (“IT”) assets and operations. As part of the Company’s business operations, it may collect and store sensitive information, including proprietary and confidential business data, intellectual property, third-party information, employee details and other personal information. To store and process this information, and to maintain key business processes such as inventory management, payment processing, cash collection, human capital management, financial operations and other essential procedures, the Company relies on both its internal and third-party information systems. The effective management of the Company’s business depends on the reliability, security and capacity of these systems. To mitigate these risks, the Company has developed a risk and compliance policy and technology-specific cybersecurity standard intended to protect the confidentiality, integrity and availability of the Company’s critical systems and information. The Company relies on known frameworks and incorporates controls from National Institute of Standards and Technology (“NIST”), Center for Internet Security (“CIS”) and Control Objectives for Information Technologies (“COBIT”) within its policies and standards. The Company has also retained a third-party that provides a security operations center service, as well as a separate third-party that provides cybersecurity advisory services and manages its cybersecurity awareness program. The Company recognizes that third-party service providers may introduce cybersecurity risks. In an effort to mitigate these risks, the Company has established separate processes and procedures to oversee and identify cybersecurity risks associated with its use of third-party service providers. Before contracting with certain technology service providers, when possible, the Company conducts due diligence to evaluate their cybersecurity capabilities. Additionally, the Company endeavors to include cybersecurity requirements in its contracts with these providers and endeavors to require them to adhere to security standards and protocols. Further, the Company also endeavors to engage with any third-party service providers with access to personally identifiable employee information to evaluate their security controls. The Company’s risk management processes are integrated into the Company’s overall enterprise risk management system. The overarching cybersecurity program is aligned to the Company’s business strategy and shares common methodologies, reporting channels and governance processes that apply to other areas of enterprise risk, including legal, compliance, strategic, operational and financial risk. Key elements of the Company's cybersecurity risk management program include: • annual risk assessments designed to help identify material cybersecurity risks to the Company's critical systems, information, products, services and broader enterprise IT environment; • designation of resources responsible for managing the Company's cybersecurity risk assessment processes, security controls and response to cybersecurity incidents; • the use of external service providers, where appropriate, to assess, test or otherwise assist with aspects of security controls; • monthly training and awareness programs for team members that include periodic and ongoing assessments to drive adoption and awareness of cybersecurity processes and controls; • a cybersecurity incident response plan that includes procedures for responding to cybersecurity incidents; and • implementation of technical security controls including identity and access management, network monitoring and logging, endpoint protection, and regular penetration testing and vulnerability assessments. As of the date of this Annual Report, though the Company and the third parties with whom it does business have experienced certain cybersecurity incidents, the Company is not aware of cybersecurity threats that have materially affected or are reasonably likely to materially affect the Company, including its business, financial condition or results of operations. However, the Company recognizes that cybersecurity threats are constantly evolving, and the potential for future cybersecurity incidents persists. The Company’s VP, Information Technology, supported by the IT Security Department, is dedicated to monitoring and assessing these risks to ensure the security and continuity of operations. Despite the implementation of robust cybersecurity programs, no security measures can entirely eliminate the risk of a significant cyberattack. A successful breach of the Company’s IT systems could have substantial consequences for its business. While the Company allocates considerable resources to safeguard its systems and information, these efforts cannot guarantee complete protection. For a discussion of whether and how any risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, have materially affected or are reasonably likely to materially affect the Company, including its business strategy, results of operations or financial condition, refer to Part I - Item 1A: Risks Related to the Company’s Business and Securities - Increased reliance on digital technologies and new information systems to support the growing business could increase costs and cybersecurity related threats. Cybersecurity Governance The Audit and Risk (“A&R”) Committee of the Board has specific responsibility for overseeing cybersecurity threats, among other things. The Company's Chief Financial Officer (“CFO”) provides the A&R Committee periodic reports on the Company’s cybersecurity risks and any material cybersecurity incidents, and the Board also receives quarterly cybersecurity reports. With regards to cybersecurity risk assessment and management, from January 2025 to June 2025, the Company’s Senior Technology Specialist reported to the Company’s Senior Vice President, Finance and Administration (who reported to the CFO). In June 2025, the Company hired a VP, Information Technology, who reports to the CFO, to support the Company’s growth as we scale-up to major construction at Thacker Pass, and subsequently into operations. The VP, IT is ultimately responsible for assessing and managing the Company’s material risks from the cybersecurity threats and is supported by the IT Security Department. The VP, IT brings over 20 years of extensive expertise in IT and has a proven track record of delivering transformative digital strategies that align technology with business and operational goals. He has consistently driven digital innovation, optimized multimillion-dollar technology portfolios and led complex organizational change through periods of significant growth. Specific to cybersecurity, the VP, IT has experience in securing both IT and operational technology systems and assets across several industries. The IT Security Department, in conjunction with third party security operations, and cybersecurity services, monitors the prevention, detection, mitigation and remediation of cybersecurity risks and incidents through various means, which may include threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged, and alerts and reports produced by security tools deployed in the IT environment. |
| Cybersecurity Risk Management Processes Integrated [Flag] | true |
| Cybersecurity Risk Management Processes Integrated [Text Block] | The Company’s risk management processes are integrated into the Company’s overall enterprise risk management system. The overarching cybersecurity program is aligned to the Company’s business strategy and shares common methodologies, reporting channels and governance processes that apply to other areas of enterprise risk, including legal, compliance, strategic, operational and financial risk. |
| Cybersecurity Risk Management Third Party Engaged [Flag] | true |
| Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] | true |
| Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] | false |
| Cybersecurity Risk Board of Directors Oversight [Text Block] | The Audit and Risk (“A&R”) Committee of the Board has specific responsibility for overseeing cybersecurity threats, among other things. The Company's Chief Financial Officer (“CFO”) provides the A&R Committee periodic reports on the Company’s cybersecurity risks and any material cybersecurity incidents, and the Board also receives quarterly cybersecurity reports. With regards to cybersecurity risk assessment and management, from January 2025 to June 2025, the Company’s Senior Technology Specialist reported to the Company’s Senior Vice President, Finance and Administration (who reported to the CFO). In June 2025, the Company hired a VP, Information Technology, who reports to the CFO, to support the Company’s growth as we scale-up to major construction at Thacker Pass, and subsequently into operations. The VP, IT is ultimately responsible for assessing and managing the Company’s material risks from the cybersecurity threats and is supported by the IT Security Department. The VP, IT brings over 20 years of extensive expertise in IT and has a proven track record of delivering transformative digital strategies that align technology with business and operational goals. He has consistently driven digital innovation, optimized multimillion-dollar technology portfolios and led complex organizational change through periods of significant growth. Specific to cybersecurity, the VP, IT has experience in securing both IT and operational technology systems and assets across several industries. The IT Security Department, in conjunction with third party security operations, and cybersecurity services, monitors the prevention, detection, mitigation and remediation of cybersecurity risks and incidents through various means, which may include threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged, and alerts and reports produced by security tools deployed in the IT environment. |
| Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] | The Audit and Risk (“A&R”) Committee of the Board has specific responsibility for overseeing cybersecurity threats, among other things. |
| Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] | The Company's Chief Financial Officer (“CFO”) provides the A&R Committee periodic reports on the Company’s cybersecurity risks and any material cybersecurity incidents, and the Board also receives quarterly cybersecurity reports. |
| Cybersecurity Risk Role of Management [Text Block] | the Company’s Senior Technology Specialist reported to the Company’s Senior Vice President, Finance and Administration (who reported to the CFO). In June 2025, the Company hired a VP, Information Technology, who reports to the CFO, to support the Company’s growth as we scale-up to major construction at Thacker Pass, and subsequently into operations. The VP, IT is ultimately responsible for assessing and managing the Company’s material risks from the cybersecurity threats and is supported by the IT Security Department. The VP, IT brings over 20 years of extensive expertise in IT and has a proven track record of delivering transformative digital strategies that align technology with business and operational goals. He has consistently driven digital innovation, optimized multimillion-dollar technology portfolios and led complex organizational change through periods of significant growth. Specific to cybersecurity, the VP, IT has experience in securing both IT and operational technology systems and assets across several industries. The IT Security Department, in conjunction with third party security operations, and cybersecurity services, monitors the prevention, detection, mitigation and remediation of cybersecurity risks and incidents through various means, which may include threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged, and alerts and reports produced by security tools deployed in the IT environment. |
| Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] | The IT Security Department, in conjunction with third party security operations, and cybersecurity services, monitors the prevention, detection, mitigation and remediation of cybersecurity risks and incidents through various means, which may include threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged, and alerts and reports produced by security tools deployed in the IT environment. |
| Cybersecurity Risk Management Positions or Committees Responsible [Flag] | true |
| Cybersecurity Risk Management Positions or Committees Responsible [Text Block] | The Company's Chief Financial Officer (“CFO”) provides the A&R Committee periodic reports on the Company’s cybersecurity risks and any material cybersecurity incidents, and the Board also receives quarterly cybersecurity reports. With regards to cybersecurity risk assessment and management, from January 2025 to June 2025, the Company’s Senior Technology Specialist reported to the Company’s Senior Vice President, Finance and Administration (who reported to the CFO). In June 2025, the Company hired a VP, Information Technology, who reports to the CFO, to support the Company’s growth as we scale-up to major construction at Thacker Pass, and subsequently into operations. The VP, IT is ultimately responsible for assessing and managing the Company’s material risks from the cybersecurity threats and is supported by the IT Security Department. The VP, IT brings over 20 years of extensive expertise in IT and has a proven track record of delivering transformative digital strategies that align technology with business and operational goals. He has consistently driven digital innovation, optimized multimillion-dollar technology portfolios and led complex organizational change through periods of significant growth. Specific to cybersecurity, the VP, IT has experience in securing both IT and operational technology systems and assets across several industries. The IT Security Department, in conjunction with third party security operations, and cybersecurity services, monitors the prevention, detection, mitigation and remediation of cybersecurity risks and incidents through various means, which may include threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged, and alerts and reports produced by security tools deployed in the IT environment. |
| Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] | true |
| Cybersecurity Risk Management Expertise of Management Responsible [Text Block] | The VP, IT is ultimately responsible for assessing and managing the Company’s material risks from the cybersecurity threats and is supported by the IT Security Department. |
Pay vs Performance Disclosure - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Pay vs Performance Disclosure | ||
| Net Income (Loss) | $ (86,262) | $ (42,633) |
Insider Trading Arrangements |
3 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Trading Arrangements, by Individual | |
| Rule 10b5-1 Arrangement Adopted | false |
| Non-Rule 10b5-1 Arrangement Adopted | false |
| Rule 10b5-1 Arrangement Terminated | false |
| Non-Rule 10b5-1 Arrangement Terminated | false |
| Rule 10b5-1 Arrangement Modified | false |
| Non-Rule 10b5-1 Arrangement Modified | false |
Background and Basis of Preparation |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Background and Basis of Preparation | 1. BACKGROUND AND BASIS OF PREPARATION Background and Nature of Operations Lithium Americas Corp. (the “Company”) is principally focused on development of Thacker Pass (“Thacker Pass,”) a sedimentary-based lithium project located in the McDermitt Caldera in Humboldt County in north-western Nevada, USA. The development of Thacker Pass is undertaken through a joint venture with General Motors Holdings LLC (“GM”) (Note 4). The Company was incorporated on January 23, 2023, under the Business Corporations Act (British Columbia). The Company’s common shares are listed on the New York Stock Exchange (“NYSE”) and on the Toronto Stock Exchange (“TSX”) under the symbol “LAC.” To date, the Company has not generated revenues from operations and has relied on financings to fund operations. The underlying values of mineral properties, plant and equipment, including Thacker Pass, are dependent on the existence of economically recoverable reserves, maintaining title and beneficial interest in the properties, and the ability of the Company to draw upon debt financing arrangements and/or raise additional capital to complete development and to attain future profitable operations. Basis of Presentation These consolidated financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“U.S. GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) and are presented on a historical cost basis, except as otherwise disclosed. These consolidated financial statements have been prepared on the assumption that the Company is a going concern and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business for the next 12 months. |
Summary of Significant Accountings Policies |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Accounting Policies [Abstract] | |
| Summary of Significant Accountings Policies | 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation These consolidated financial statements include the accounts of Lithium Americas Corp., its wholly owned subsidiaries, and a variable interest entity (“VIE”) in which it is the primary beneficiary. The Company consolidates entities that are VIEs when the Company determines it is the primary beneficiary. Generally, the primary beneficiary of a VIE is a reporting entity that has (a) the power (including relative power) to direct the activities that most significantly affect the VIE’s economic performance, and (b) the obligation to absorb losses of, or the right to receive benefits from, the VIE that could potentially be significant to the VIE. All intercompany balances and transactions between the Company and its subsidiaries have been eliminated on consolidation. Use of Estimates Accounting estimates are an integral part of the consolidated financial statements. The preparation of these estimates requires the use of judgments and assumptions that affect the amounts reported in these consolidated financial statements and accompanying notes. The most significant areas requiring the use of management estimates and judgment relate to the accounting for the joint venture with GM, the accounting for debt and debt facilities including embedded derivatives, the accounting for the Notes and the accounting for the DOE Loan and warrant obligations, including fair value movements, the accounting for contracts on own equity, asset retirement obligations, assessments of impairment for Thacker Pass and the fair value of financial instruments including marketable and equity securities. The Company bases its estimates and assumptions on historical experience and other factors believed to be reasonable at the time the estimate was made. However, due to the inherent uncertainties in making estimates, actual results may differ from amounts estimated in these consolidated financial statements and such differences could be material and require adjustments to reported amounts in future periods. In particular, it is reasonably possible that the estimate for the embedded conversion option in the Orion convertible debt and the value of the obligations for the LAC Warrant and JV Warrant could change in the near term in amounts that could be material, in particular, as a result of changes in the Company’s share price and, in the case of the LAC Warrant and the JV Warrant, additional issuance of equity by the Company, or changes in lithium prices. Further information related to risks and uncertainties are disclosed in notes 3, 11 and 20. Functional and Reporting Currency The functional and reporting currency of the Company and each of its subsidiaries is the U.S. dollar. Monetary assets and liabilities denominated in foreign currencies are translated into U.S. dollars at the rates of exchange prevailing at the consolidated balance sheet dates. Transactions in currencies other than the functional currency are measured and recorded in the functional currency at the exchange rate prevailing on the transaction date, and exchange differences arising on remeasurement are recognized in the Consolidated Statements of Loss. Cash and Restricted Cash Cash consists of cash held with banks and their carrying amounts approximate their fair value. The Company maintains certain cash balances that are subject to contractual restrictions and therefore not available for general corporate purposes. Restricted cash includes funds that may only be used to finance or pay for specific expenditures related to the construction of Thacker Pass, as defined under the terms of applicable agreements. Transfers of restricted cash for approved project expenditures are made in accordance with the terms of the governing agreements. Once funds are disbursed for qualifying expenditures, the related amounts are no longer considered restricted. The Company classifies restricted cash as current or non-current based on the expected timing of when the restrictions will lapse or the funds are expected to be used. Investments The Company’s investments in equity securities are measured at fair value at each period end with changes in fair value recognized in the Consolidated Statements of Loss. Mineral Properties, Plant and Equipment Property, plant and equipment (excluding mineral properties) Property, plant and equipment (“PP&E”) is recorded at cost, net of accumulated depreciation. Expenditures for new assets and expenditures that extend the useful lives of existing assets are capitalized. Depreciation of ‘Machinery and equipment’ and ‘Property, plant and equipment’ is computed using the straight-line method over the estimated useful productive life of the assets, which ranges from 2 - 30 years. Leasehold improvements are amortized over the period of the lease or life of the asset, whichever is shorter. Amortization of right-of-use assets is included in depreciation expense. Construction-in-process (“CIP”) assets are reclassified to their final PP&E account and begin depreciation when the asset is substantially complete and ready for its intended use. The assets’ residual values, useful lives, and depreciation methods are reviewed periodically and adjusted, if appropriate, when warranted. Gains or losses arising on the disposal of items of PP&E are determined as the difference between the sale proceeds and the carrying amount of the assets and are recognized in the Consolidated Statements of Loss. Mineral Properties Mineral properties are recorded at cost at the acquisition date. Prior to having proven and probable reserves and the right to exploit a mineral property, a mineral property is in the exploration stage. When the Company has obtained the rights to exploit a mineral property and the property has proven and probable reserves, as defined by S-K 1300, the project is in the development stage and capitalization of mine development project costs begins. Mineral reserves represent the estimate of ore that can be economically and legally extracted from the Company's mining properties. Costs are capitalized for an ore body in the development stage where proven and probable reserves exist and the activities are directed at obtaining additional information on the ore body or converting additional resources to proven and probable reserves. Development costs capitalized in the development stage include engineering and metallurgical studies, drilling and other related costs to delineate an ore body and the removal of overburden to initially expose an ore body at open pit surface mines (pre-stripping). Mineral properties in the exploration or development stage are not amortized until the underlying property is converted to the production stage, at which point the mineral property will be amortized using the units-of-production method based on the estimated recoverable reserves. The production phase of an open pit mine commences when saleable minerals, beyond a de minimis amount, are produced. Thacker Pass Construction-in-process assets The Company capitalizes costs related to the construction of processing and other facilities associated with specific mineral properties, once the associated mineral property has reached the development phase. CIP assets primarily consist of infrastructure development, camp and lodging expenditures, equipment purchases, salary, consulting and other directly attributable costs incurred during the construction phase. Depreciation related to assets used directly in construction is capitalized. Interest incurred during construction is capitalized. Upon completion of construction, CIP assets are reclassified to the appropriate property, plant and equipment categories and depreciated over their estimated useful lives using the units-of-production method or another appropriate depreciation method. Impairment of Long-lived Assets The Company reviews and evaluates its long-lived assets, which include property, plant and equipment, mineral properties and CIP assets, for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Events or circumstances that could indicate impairment include, but are not limited to, significant decreases in the market price of the assets, adverse changes in legal factors or the business climate, including changes in commodity prices, changes to the extent or manner in which the asset is being used or its physical condition, and costs significantly in excess of the amount originally expected. In estimating future cash flows, assets are grouped at the lowest level for which there are identifiable cash flows that are largely independent of future cash flows from other asset groups. An impairment is determined to exist if the total undiscounted projected pre-tax future cash flows are less than the carrying amount of a long-lived asset or asset group. Once it is determined that an impairment exists, an impairment loss is measured and recorded based on the difference between the estimated fair value of the long-lived assets being tested for impairment and their carrying amounts. This process involves significant judgments and estimates, including commodity prices, production costs, life of mine plans and discount rates. Leases The Company leases office space, equipment, vehicles, and land. At the inception of a contract, the Company assesses whether a contract is or contains a lease. A contract contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. If the contract is determined to be a lease, it is classified as either an operating or a finance lease. Operating and finance lease right-of-use (“ROU”) assets and lease liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the lease term. When the rate implicit in the lease cannot be readily determined, the Company utilizes its incremental borrowing rate to determine the present value of future lease payments. Operating lease ROU assets are included in Other assets, and lease obligations are included in Lease liabilities on the Consolidated Balance Sheets. Finance lease ROU assets are included in Mineral properties, plant and equipment, and lease obligations are included in Lease liabilities on the Consolidated Balance Sheets. Operating lease costs are recognized on a straight-line basis over the lease term and are included in Operating expenses in the Consolidated Statements of Loss. Finance lease costs are recognized as interest costs based on the effective interest method for the lease liability and straight-line amortization of the ROU asset. Variable lease payments are recognized in the period in which they are incurred. Leases with a term of one year or less are not recognized on the Consolidated Balance Sheets and are recognized on a straight-line basis. Additionally, the Company has elected the practical expedient to not separate lease and non-lease components. Debt and debt facilities The Company accounts for debt instruments, including convertible debt and the U.S. Department of Energy (“DOE”) loan, as financial liabilities recorded at amortized cost unless a fair value election is applied. Interest cost is capitalized where the proceeds are used to fund the development of qualifying assets. Initial proceeds received are allocated between the debt host and any embedded derivative and other instruments in the same transaction. Any resulting discount is accreted over the term of the debt instrument using the effective interest rate method. Embedded derivative features required to be separated by U.S. GAAP are carried at fair value with changes in fair value recognized through income or loss. Direct and incremental costs incurred to obtain a debt facility, including fees paid to the lender and third-party transaction costs, are deferred once the facility is considered probable and are recorded as deferred financing costs associated with the loan commitment and are reclassified as a discount on debt once drawn, in proportion to amounts borrowed against total borrowings expected under the facility. Contracts on own equity Contracts or embedded derivative features to issue common shares, other than through share-based payments issued in connection with goods or services, are evaluated to determine whether they are classified as financial liabilities or equity. Contracts on the Company's own equity include the conversion feature in the convertible debt and the warrants and exchange obligations issued to the DOE. Contracts that may be settled net in cash outside the control of the Company or are not indexed to equity are treated as financial liabilities, recorded at fair value with changes recorded through income or loss. To the extent an instrument subsequently becomes indexed to own equity and is eligible to be classified as equity, it is reclassified to equity at its fair value on the date of reclassification. Royalties and Production Payments Royalties on future production or sales are reported based on their underlying characteristics. When indicated by their terms, royalties and production payments are treated as financial liabilities, such as those subject to call options for a specified price or those sold on proven properties and settleable with cash flows in which the Company has significant continuing involvement. The Company determines interest expense associated with such financial liabilities based on the amortized cost method using a retrospective approach. Under the retrospective approach, the carrying value of the liability is subsequently measured as the discounted present value of estimated remaining cash flows, using the current effective interest rate derived from the original proceeds, cash flows to date and the estimated remaining cash flows. The Company accounts for the production payment as debt that is recorded at amortized cost. The discount portion is accreted over the term of the debt instrument using the effective interest rate method. Reclamation Liabilities Reclamation obligations are initially recognized when incurred and recorded as liabilities at their estimated fair value. The fair value of the liability is determined using expected future cash outflows, discounted to present value using a credit-adjusted risk-free rate. The estimated fair value reflects the cost of decommissioning and restoring the site at the end of the asset’s useful life. The liability is subsequently accreted over time, based on the original discount rate. The corresponding asset retirement cost is capitalized as part of the asset’s carrying value and amortized over the useful life of the related asset. Reclamation obligations are periodically adjusted to reflect changes in the estimated present value resulting from the passage of time and revisions to the estimates of either the timing or amount of the reclamation costs. The estimated reclamation obligation is based on when spending for an existing disturbance is expected to occur. The Company reviews, on an annual basis, or more frequently if significant changes in estimates occur, the reclamation obligation for its project. Non-controlling Interests in Lithium Nevada Ventures LLC As at December 31, 2025, the Company owned a 62% interest in Lithium Nevada Ventures LLC (“Lithium Nevada Ventures”) which holds a 100% interest in Thacker Pass. General Motors Holdings LLC owns the remaining 38% interest in Lithium Nevada Ventures. The Company allocates the equity and income of Lithium Nevada Ventures based on a Hypothetical Liquidation at Book Value (“HLBV”) method. The HLBV accounting method is an approach that calculates the change in the claims of each member on the net assets of the investment at the beginning and end of each period. Each member’s claim is equal to the amount each party would receive or pay if the net assets of the investment were to liquidate at book value. Income Taxes The Company accounts for income taxes using an asset and liability approach, which results in the recognition of deferred tax assets and liabilities for the expected future tax benefits or consequences of temporary differences between the financial reporting basis and the tax basis of assets and liabilities, as well as operating loss and tax credit carryforwards, using enacted tax rates in effect in the years in which the differences are expected to reverse. Deferred tax liabilities are not provided on differences between the carrying value and tax basis of the net equity of foreign subsidiaries, including unremitted earnings when applicable, where such differences are indefinitely reinvested and not expected to reverse in the foreseeable future. A valuation allowance is provided for deferred tax assets if it is determined that the realization of a future tax benefit is not more likely than not. Stock-Based Compensation The Company’s equity incentive plan allows for the grant of share options, restricted share units (“RSUs”), performance share units (“PSUs”) and deferred share units (“DSUs”). The cost of equity-settled payment arrangements is recorded based on the estimated fair value at the grant date and charged to earnings over the vesting period. Each tranche in an award is considered a separate award with its own vesting period and grant date fair value. The fair value of each tranche is measured at the date of grant using the appropriate pricing model, including Monte Carlo simulation methodology for performance share units including a market-related condition. Stock-based compensation expense is recognized over the tranche’s vesting period based on the number of awards expected to vest. The number of awards expected to vest, and the estimated forfeiture rate is reviewed at least annually with any impact being recognized immediately. Loss per Common Share Basic loss per share is computed by dividing the net loss attributable to shareholders of the Company by the weighted average number of common shares outstanding during the reporting period. Recently Issued Accounting Pronouncements In December 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2025-10 “Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities”. ASU 2025-10 established authoritative guidance for the accounting for a government grant received by a business entity, including guidance for a grant related to an asset and a grant related to income. This guidance is effective for annual reporting periods beginning after December 15, 2028, and interim reporting periods within those annual reporting periods. The Company is currently evaluating the impact of the guidance on the consolidated financial statements. In November 2024, the FASB issued ASU 2024-03, “Income Statement – Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40) - Disaggregation of Income Statement Expenses” which requires public companies to provide enhanced disclosures in the notes to the financial statements on the nature of certain expense captions presented on the face of the Consolidated Statements of Loss. The new guidance is effective for annual reporting periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of the guidance on the consolidated financial statements. Recent Accounting Pronouncements Adopted In November 2023, the FASB issued ASU 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” ASU 2023-07 expands public entities’ segment disclosures by requiring more detailed information about a reportable segment’s profit or loss and assets. ASU 2023-07 applies to all public entities that are required to report segment information in accordance with ASC 280 “Segment Reporting” and was effective for the Company for the fiscal year ended December 31, 2024 and interim periods commencing in fiscal 2025. The adoption did not have a material impact on the Company's consolidated financial statements or disclosures. In December 2023, the FASB issued ASU 2023-09 “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” ASU 2023-09 requires disaggregated information about effective tax rate reconciliation and additional information on taxes paid that meet a qualitative threshold. The guidance is effective for the Company for the fiscal year ended December 31, 2025, and subsequent interim periods. The adoption did not have a material impact on the Company's consolidated financial statements or disclosures. |
Department of Energy Loan Facility and Warrant Obligations |
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| Department of Energy Loan Facility and Warrant Obligations | 3. DEPARTMENT OF ENERGY LOAN FACILITY AND WARRANT OBLIGATIONS Original loan agreement The DOE and the Company’s subsidiary, Lithium Nevada LLC (“LN”), executed a loan agreement on October 28, 2024 for a construction facility with a maximum borrowing of $1.97 billion plus up to $289.6 million of capitalized interest for a total of $2.26 billion, provided under the Advanced Technology Vehicles Manufacturing (“ATVM”) Loan Program (the “DOE Loan”), to fund eligible construction costs of Thacker Pass, over the period from the first advance through no later than November 30, 2028. The DOE Loan agreement was amended on December 20, 2024 to accommodate the formation of Lithium Nevada Ventures, a joint venture with GM (Note 4) to own a 100% interest in LN, which owns Thacker Pass. The DOE Loan originally had a 24-year maturity with interest rates fixed from the date of each advance for the term of the loan at applicable U.S. Treasury rates without any additional credit spread. The DOE Loan was amended by the OWCA (as defined below) on October 7, 2025. Without the OWCA, the Company determined it would be unable to meet the conditions of first draw under the loan agreement by the longstop date of October 31, 2025 and, accordingly, wrote off deferred financing costs associated with the original loan agreement (Note 16). October 7, 2025 DOE ATVM Loan Program On October 7, 2025, the Company and the DOE entered into an omnibus waiver, consent and amendment (as amended the “OWCA”) for certain amendments to the Company’s DOE Loan. As part of the OWCA, the DOE Loan expected total loan amount decreased to $2.23 billion due to estimated capitalized interest during construction decreasing to $256 million, while the DOE Loan principal remained the same at $1.97 billion. The interest rate to be applied to amounts drawn under the DOE Loan remained unchanged at the applicable long-dated U.S. Treasury rate from the date of each draw with 0% credit spread. The DOE Loan tenor changed to approximately 23 years from date of first draw on the DOE Loan. The DOE agreed to defer $184 million of scheduled debt service obligations under the DOE Loan, which were to occur in the first five years of loan repayment, with the total deferred balance reallocated across the remaining payment periods to maturity. The Company agreed to contribute an additional $120 million to the DOE Loan reserve accounts, to be funded within 12 months of the OWCA. In addition, as part of the OWCA, the Company agreed to issue warrants to the DOE by January 31, 2026, on the terms and conditions summarized below. On January 30, 2026, (the “Issuance Date”), the Company issued to the DOE: (a) a warrant agreement to purchase up to 18,286,687 Common Shares, which is equal to 5% of the Company’s outstanding total shares as of the Issuance Date, at an exercise price of $0.01 per share (the “LAC Warrant”), exercisable for ten years from the Issuance Date, subject to customary anti-dilution adjustments and other terms set forth in the LAC Warrant and (b) a warrant agreement to purchase 8,656,509,695 non-voting units of the JV (the “Non-Voting Units”), which is equal to a 5% economic interest in the JV as of the Issuance Date, at an exercise price of $0.0001 per unit (the “JV Warrant”), exercisable for ten years from the Issuance Date, subject to customary anti-dilution adjustments and other terms set forth in the JV Warrant. Each of the LAC Warrant and the JV Warrant shall be automatically exercised in full on a cashless basis immediately prior to expiration, and the LAC Warrant shall additionally be exercised in full via cashless exercise on the 12-month anniversary of the Issuance Date and on each one-year anniversary of such date thereafter if the VWAP of the Common Shares over the 15 Trading Days ending immediately prior to such date exceeds $30.00 per share (as adjusted). On the Issuance Date, the JV, the Company, B.C. Corp, the LAC JV Member, GM and the DOE, entered into a Put, Call and Exchange Agreement (the “Put, Call and Exchange Agreement”). Under the Put, Call and Exchange Agreement, the DOE has a put right (the “DOE Put”) to require GM to elect to either (i) purchase, or cause the JV to purchase, the JV Warrant and any Non-Voting Units issued upon conversion thereof, as applicable (a “JV Warrant Sale”), or (ii) subject to applicable exchange approvals and compliance with securities laws, cause the JV Warrant and any Non-Voting Units issued upon conversion thereof, as applicable, to be exchanged for a warrant to purchase a number of the Company’s Common Shares (a “JV Warrant Exchange”) that would result in the DOE holding a percentage of the total issued and outstanding Common Shares equal to the then applicable Warrant Conversion Rate (as defined below). Additionally, the exercise (including any automatic exercise) of the LAC Warrant shall be deemed to be delivery of a put notice pursuant to the Put, Call and Exchange Agreement. The sale price for a JV Warrant Sale will be mutually determined in good faith by GM and the DOE. If GM and the DOE cannot agree on the sale price for a JV Warrant Sale within 60 days of delivery of the put notice or if the JV Warrant Sale is not completed within 90 days of the delivery of the put notice, the parties will cause a JV Warrant Exchange to occur. The “Warrant Conversion Rate” will be, as of the time of determination, the product of (i) 100 multiplied by (ii) the quotient obtained by dividing (A) the number of fully diluted Non-Voting Units in the JV held by the DOE by (B) the number of outstanding units in JV held by the Company plus the number of fully diluted Non-Voting Units in the JV held by the DOE. The number of outstanding units in the JV held by the LAC JV Member is subject to adjustment in connection with (i) the funding of any incremental capital contribution to the JV or (ii) the transfer by the LAC JV Member of any units in the JV, in each case in accordance with the Second A&R LLCA. In addition, from and after the earlier of the Scheduled Substantial Completion Date and the Substantial Completion Date of Thacker Pass (as such dates are defined in the Loan Arrangement Reimbursement Agreement), GM has a call right (the “GM Call”) to elect to effect, or cause the JV to effect, a JV Warrant Sale if a price can be agreed upon between GM and the DOE within 60 days of the delivery of the call notice. If GM and the DOE cannot agree on the sale price within 60 days of delivery of the call notice or if the JV Warrant Sale is not completed within 90 days of the delivery of the call notice, the parties will cause a JV Warrant Exchange to occur. Deferred financing costs of $400.2 million were recognized with the signing of the OWCA and were initially recorded as an asset on the Consolidated Balance Sheets. The deferred costs include $394.1 million relating to the fair value at inception of the LAC Warrant and JV Warrant and $6.1 million of costs paid to obtain the debt facility including fees paid to the lender and third-party transaction costs. The deferred financing costs are reclassified against the DOE Loan liability in proportion to the amounts borrowed in relation to total borrowings expected under the facility. These costs are amortized as interest costs over the term of the borrowing using the effective interest rate method. Guarantee, security and covenants Under the terms of the OWCA, the Company has guaranteed the full and timely payment of costs to complete construction of Thacker Pass and has guaranteed payment of any amounts borrowed under the DOE Loan. The loan and guarantee are secured by, among other things, a pledge of all equity interests of LN, all assets of LN, and all tax credit proceeds received for monetization of tax credits generated by Thacker Pass. Advances under the DOE Loan, cash flows from Thacker Pass, and other amounts received by LN are required to be held in restricted cash accounts owned by LN and managed by a collateral agent. The Company’s guarantee of the DOE Loan will remain in place until, among other things, (i) project completion has occurred; (ii) LN has paid at least four consecutive quarterly payments from operating revenues after project completion; and (iii) all reserve accounts are funded as required by the DOE Loan agreements. The DOE Loan contains a variety of financial and nonfinancial compliance covenants. In the event of noncompliance with certain covenants, the DOE has the right to terminate the facility and demand any outstanding amounts immediately due and payable. The Company is in compliance with all covenants at December 31, 2025. Borrowings under the DOE ATVM Loan Program On October 20, 2025, LN received its first advance under the DOE Loan in the amount of $435.0 million. The first advance bears a fixed contractual interest rate of 4.38% per annum and repayments begin in . Deferred financing costs of $88.4 million were recorded as debt issuance costs and offset against the carrying value of the first advance resulting in an initial net carrying value of $346.6 million. The effective interest rate on the first draw, after giving effect to the amortization of the portion of deferred financing costs is approximately 6.36%.
Warrant obligations On October 7, 2025, in accordance with obligations under the OWCA, the Company recorded financial liabilities related to the LAC Warrant, the JV Warrant, and the Put, Call and Exchange Agreement. Obligations pursuant to LAC Warrant The obligation relating to the LAC Warrant was recorded as a financial liability, as the obligation was with respect to 5% of the Company’s total outstanding shares to be determined at a future date and, accordingly, was not considered indexed solely to the Company’s equity. The Company accounted for the LAC Warrant based on the contractual terms and agreement in principle between parties upon the execution of the OWCA on October 7, 2025. These terms were consistent with those included in the warrant agreements subsequently executed on January 30, 2026. Obligations pursuant to JV Warrant and Put, Call and Exchange Agreement The obligation related to the JV Warrant was recorded as a financial liability as the obligation was with respect to 5% of the JV’s total units, as if the JV Warrant had been exercised for the underlying units to be determined at a future date and, accordingly, was not considered indexed solely to the Company’s equity. The Company accounted for the JV Warrant based on the contractual terms and agreement in principle between parties including the put, call and conversion features therein, upon the execution of the OWCA on October 7, 2025. These terms were consistent with those included in the warrant agreements subsequently executed on January 30, 2026. The contingent obligations of the Company and the JV arising from the DOE Put and GM Call options are considered embedded in the JV Warrant. The JV’s embedded written option to settle the JV Warrant in cash is included in the fair value of the JV Warrant on the JV’s Consolidated Balance Sheet, whereas the Company’s embedded written option to purchase the JV Warrant from the DOE is included in the fair value of the JV Warrant in the Company’s Consolidated Balance Sheet. The following table represents a reconciliation from the initial recognition of the obligations pursuant to the LAC Warrant and JV Warrant on October 7, 2025 to the fair value of the warrant obligations at December 31, 2025:
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Transactions With General Motors Holdings LLC |
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| Joint Venture Formation [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Transactions With General Motors Holdings LLC | 4. TRANSACTIONS WITH GENERAL MOTORS HOLDINGS LLC Joint Venture with GM On October 15, 2024, the Company and GM entered into an investment agreement (“GM Investment Agreement”) to establish a joint venture (the “JV”) for the purpose of funding, developing, constructing and operating Thacker Pass. The GM Investment Agreement replaced the previous Tranche 2 Investment Agreement with GM. The transaction closed and the JV was formed on December 20, 2024. Prior to establishing the JV, the Company reorganized its holdings of Thacker Pass under a new subsidiary, Lithium Nevada Ventures, which became the joint venture entity. Lithium Nevada Ventures’ wholly owned subsidiary LN directly owns the Thacker Pass assets and operations. The JV replaced the Previous GM Agreement and Tranche 2 Investment Agreement (see Previous GM Investment and Tranche 2 Investment Agreement section below). As of closing of the JV on December 20, 2024, the Company owned a 62% majority equity interest in the JV and operates the joint venture through its majority voting rights and a management services agreement under which the Company provides executive level, administrative and other services to the JV. GM owns 38% interest in the joint venture. In exchange for a 38% membership interest in Lithium Nevada Ventures, GM contributed $330.0 million of cash and committed to provide a $195.0 million Letter of Credit (“LC Facility”) to support collateral requirements under the DOE Loan. The Company contributed a further $138.3 million in cash to the JV and provided additional financial support in the form of a guarantee of the DOE Loan and deferral of management fees and cost reimbursements. On April 1, 2025, the Company and GM announced the Final Investment Decision (“FID”) for Thacker Pass Phase 1 and made cash contributions to the JV of $191.6 million and $100.0 million (the “GM FID capital contribution”), respectively. On August 5, 2025, the LC Facility was released by GM to LN. The Company has determined that the JV is a variable interest entity due to its reliance on additional financing to complete Phase 1 of the development of Thacker Pass. The Company has determined it is the primary beneficiary of the joint venture due to the relative decision-making power of the parties over the most significant activities of the joint venture. As a result, the Company has consolidated Lithium Nevada Ventures in these consolidated financial statements. The net assets, respective interests and non-controlling interest of Lithium Nevada Ventures are as follows:
1 The Company allocates income and net assets between the controlling and non-controlling interests based on a hypothetical liquidation at book value. The assets of the JV, including cash and restricted cash of $412.6 million and $452.3 million at December 31, 2025 and December 31, 2024, respectively, can only be used to settle the obligations of the JV and are not available to the Company for general corporate purposes. The Company’s maximum exposure to loss includes (i) the carrying value of the Company’s interest as shown in the table above; (ii) upon funding of the DOE Loan, (a) all costs necessary to achieve completion of construction of Thacker Pass; and, (b) all outstanding borrowings and interest thereon under the DOE Loan (Note 3); and (iii) costs associated with the management services agreement and incentive compensation for personnel involved in the JV, to the extent such amounts cannot be supported by the operations of the JV ($9.2 million as at December 31, 2025 and negligible December 31, 2024). The JV agreement contains certain conditions which, if not met, could require the JV to repurchase GM’s non-controlling interest. GM’s investment is subject to ongoing covenants related to the JV’s compliance with specified laws and regulations. In the event the JV or parties acting on its behalf (including employees, directors, officers, the Company and others) do not comply with these provisions and such noncompliance is not cured and corrected in all material respects within specified periods, GM may pursue any one, or a combination, of the following remedies: (a) sell all or a portion of its equity interest in the JV to a third party; (b) put all or a portion of its equity back to the JV for (i) $1, if the DOE Loan is then in effect or (ii) if the DOE Loan has been terminated, at a price equal to the greater of the fair value, book value or the aggregate GM contribution of such equity on a per share basis, limited to the availability of funds in the JV in excess of those needed for the JV to continue as a going concern. As a result of these provisions, which are outside the Company’s control, the non-controlling interest is presented as temporary equity. No adjustment has been made to the carrying value of non-controlling interest due to these provisions, as the Company has determined it is not probable at the balance sheet date that either of these put options will become exercisable. The Company has guaranteed the timely payment of costs to complete construction and the full amount borrowed under the DOE Loan and is considered a co-borrower. In addition, the Company’s entitlement to management fees and reimbursement of specified costs are deferred until the JV has generated sufficient funds to support distribution to the joint venture members. The Company and GM recover any amounts funded through the additional financial support as distributions from the joint venture. The additional financial support is eligible for gradual release, as construction of Thacker Pass is complete and the joint venture’s operations are able to support the collateral requirements associated with the DOE Loan and make distributions to the joint venture members. GM Offtake Agreements Pursuant to an offtake agreement, GM is required to purchase lithium production from Thacker Pass Phase 1, equal to 20% of GM’s specific lithium requirements, up to 100% of Phase 1 production volume (“Phase 1 Offtake Agreement”). Concurrently with closing of the DOE Loan on October 28, 2024, the Phase 1 Offtake Agreement was extended to 20 years to coincide with the expected maturity of the DOE Loan. As part of the formation of the JV on December 20, 2024, GM also entered into an additional 20-year offtake agreement for up to 38% of production volumes from Phase 2 of Thacker Pass and retained its right of first offer on the remaining balance of Phase 2 volumes (“Phase 2 Offtake Agreement” and together with the Phase 1 Offtake Agreement, the “Offtake Agreements”). On October 7, 2025, in connection with the entry into the OWCA, the Company and GM agreed to amend the Phase 1 Offtake Agreement as follows: (i) the delivery dates for the “Annual Purchase Forecast” and “Annual Production Forecast” (each as defined in the Phase 1 Offtake Agreement) are accelerated by two months; (ii) the forecast period for the first five years of phase one is extended from two years to three years, with the second and third years remaining non-binding; (iii) the JV is required to prioritize GM’s volume requirements; (iv) for the first five years of Phase 1, the JV may enter into firm volume commitments with third parties, subject to a cap based on the difference between the Annual Production Forecast and the Annual Purchase Forecast, and the cap is 100% of the difference in the first year, 80% in the second year, and 60% in the third year; (v) GM’s Annual Purchase Forecast is capped at 20% year-over-year growth during the aforementioned period; (vi) after the first five years, (a) the forecast period reverts to two years, with the second year being non-binding and includes no cap on GM’s Annual Purchase Forecast, and (b) third-party commitments are capped at 100% of the difference between forecasts in the first year and 50% in the second year of such forecasts; and (vii) if GM relinquishes volumes in non-binding forecast periods but later demonstrates a need for those volumes and incurs higher costs as a result of third-party purchases, GM would be entitled to a “profit true-up” equal to the volume procured multiplied by the difference between the third-party pricing and the implied JV pricing. Previous GM Agreement and Tranche 2 Investment Agreement On October 15, 2024, an investment agreement with GM was terminated, resulting in a gain on change in fair value of $0.4 million for the year ended December 31, 2024. |
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Cash and Restricted Cash |
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| Cash and Cash Equivalents [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Cash and Restricted Cash | 5. CASH AND RESTRICTED CASH
As at December 31, 2025, $1.4 million of cash and restricted cash was held in Canadian dollars (2024 – $0.8 million), and $904.2 million in US dollars (2024 – $593.4 million). Advances under the DOE Loan, cash flows from Thacker Pass, and other amounts received by LN are required to be held in restricted cash accounts owned by LN and managed by a collateral agent, pursuant to a Collateral Agency and Accounts Agreement (as amended, the “Accounts Agreement”) entered into by and among LN, DOE, and Citibank, N.A., in its capacity as collateral agent (“Collateral Agent”) and Depositary Bank (“Depositary Bank”) (Note 3). Pursuant to the Accounts Agreement, LN must comply with certain reporting and notice requirements to draw upon or deposit amounts in the restricted cash accounts. As at December 31, 2025, such amounts totaled $337.1 million (2024 - $nil). The Company is subject to a concentration of credit risk in relation to cash and restricted cash. The Company’s maximum exposure to credit risk for cash and restricted cash is the amount disclosed in the Company’s Consolidated Balance Sheets. All cash and restricted cash is held through two Canadian chartered banks and two U.S. chartered banks. The Company is subject to a concentration of credit risk by placing cash primarily with two Canadian banks and two U.S. banks. The Company regularly reviews its cash and restricted cash, as well as economic conditions, to determine whether an allowance for expected losses is necessary. |
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Investments Measured At Fair Value |
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| Schedule of Investments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Investments Measured At Fair Value | 6. INVESTMENTS MEASURED AT FAIR VALUE
The Company holds 13,301 common shares (representing approximately 2% ownership) of Green Technology Metals Limited (ASX: GT1) (“GT1”), a North American focused lithium exploration and development public company with hard rock spodumene assets in north-western Ontario, Canada. A loss on change in fair value of GT1 of $0.2 million for the year ended December 31, 2025 (2024 - $2.0 million) was recognized in the Consolidated Statements of Loss. At December 31, 2025, the Company holds 806 series C-1 preferred shares of Ascend Elements, Inc. (“Ascend Elements”), a private US based lithium-ion battery recycling and engineered material company. A gain on change in fair value of Ascend Elements at December 31, 2025 of $0.9 million (2024 - loss of $5.0 million), determined based on the Company’s assessment of Ascend Elements’ fair value, was recognized in the Consolidated Statements of Loss. The Company accounts for the Ascend Elements equity investment at fair value, which is based on a review of Ascend Elements’ business developments, financings and trends in the share prices of other companies in the same industry sector (Note 20). |
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Mineral Properties, Plant and Equipment, Net |
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| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mineral Properties, Plant and Equipment, Net | 7. MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET
1 At December 31, 2025, includes prepaid construction costs of $75.0 million and deposits on long-lead equipment of $268.7 million, all related to Thacker Pass. In addition, amount includes capitalized amounts for deferred interest on the Notes of $13.0 million, discount amortization of $9.1 million on the Notes and PPA, deferred interest on the DOE Loan of $2.3 million, and $3.2 million (2024 - $2.8 million) of interest on other loans. During the year ended December 31, 2025, stock-based compensation related to restricted share units (“RSUs”) of $1.6 million was capitalized to Thacker Pass (2024 - $2.4 million). During the year ended December 31, 2025, no stock-based compensation related to performance share units (“PSUs”) was capitalized to Thacker Pass (2024 - $0.3 million). |
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| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Other Assets | 8. OTHER ASSETS
Operating lease right-of-use assets include office leases and a land lease associated with Thacker Pass. |
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Accrued Liabilities |
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| Accrued Liabilities | 9. ACCRUED LIABILITIES Accrued liabilities are comprised of the following items:
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| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases and Other Liabilities | 10. LEASES AND OTHER LIABILITIES Lease liabilities include the following:
Leases for office space, vehicles and equipment have a range of terms between 1 to 10 years with remaining lease terms ranging from 0.4 to 10 years at December 31, 2025. In November 2023, the Company entered into a 40-year land lease for land near the City of Winnemucca, Nevada. The following is a schedule of future minimum lease payments under noncancellable finance and operating leases as of December 31, 2025.
Other liabilities A third-party mining contractor has been contracted to design, consult and conduct mining operations of Thacker Pass. The service provider provided an advance of $3.5 million. The Company will pay a success fee to the mining contractor of $4.7 million upon achieving certain commercial mining milestones or repay the $3.5 million advance without interest if such commercial mining milestones are not met. |
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Convertible Debt, Royalty and Production Payment Arrangements |
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| Convertible Debt, Royalty and Production Payment Arrangements | 11. CONVERTIBLE DEBT, ROYALTY AND PRODUCTION PAYMENT ARRANGEMENTS On April 1, 2025, the Company closed the strategic investment of $250.0 million from fund entities managed by Orion, for the development and construction of Phase 1 of Thacker Pass (the “Orion Investment”). At closing, Orion purchased senior unsecured convertible notes with an aggregate principal amount of $195.0 million (the “Notes”) and entered into a Production Payment Agreement (“PPA”) whereby Orion paid the Company $25.0 million in exchange for payments corresponding to the minerals processed and gross revenue generated by Thacker Pass. Under the PPA, Orion is entitled to fixed and variable production payments with respect to the first 41,500 tonnes of lithium processed at Thacker Pass each year, subject to certain adjustments. At closing, Orion paid $217.1 million (an aggregate initial investment of $220.0 million less an original issuance discount of $2.9 million). Orion has committed to purchase an additional $30.0 million in aggregate principal amount of Notes within two years (the “Delayed Draw Notes”), subject to the satisfaction of certain conditions precedent, upon request by the Company. As of December 31, 2025, the Company had not issued the Delayed Draw Notes. On April 1, 2025, the Company allocated the proceeds of the Orion Investment as follows:
The following reconciliation includes initial recognition of the components of the Orion Investment and activity to December 31, 2025:
Convertible Debt The Notes accrue interest payable quarterly in arrears at an annual rate of 9.875%. Interest is payable in cash or by inclusion of such interest in the principal amount at the option of the Company. The Notes are convertible at the option of the holder at any time into the Company’s common shares prior to the maturity at an initial conversion price of $3.78 per share, subject to certain adjustments. The conversion of Notes is settleable in common shares, subject to a cap (the “Conversion Cap”). Any excess of convertible shares over the Conversion Cap is settleable in cash, subject to a beneficial ownership limitation applicable to the holder at the time of conversion. As a result of this potential partial cash settlement feature, the conversion feature is accounted for as an embedded derivative (the “Embedded Derivative”), measured at fair value with changes in fair value recorded in the Consolidated Statements of Loss. Principal and deferred interest on the Notes are due at maturity on April 1, 2030, unless redeemed or converted earlier. After October 1, 2027, the Company has the right to redeem the Notes at its option, subject to certain conditions. The Company incurred transaction costs of $9.7 million in connection with the closing of the Orion Investment. Total transaction costs were allocated on the same basis as the proceeds, including $4.3 million to the Notes, $1.0 million to the PPA, and $4.4 million to the Embedded Derivative. Transaction costs allocated to the Notes and the PPA are amortized over the life of the obligation, using the effective interest rate method, whereas transaction costs allocated to the Embedded Derivative were expensed at closing. Unamortized transaction costs are deducted from the carrying value of Notes and PPA. On October 10, 2025, Orion exercised its conversion option for a total of $65.0 million of the principal amount and accrued interest of the Notes in exchange for 17.2 million common shares of the Company, in accordance with the terms of the agreement. The 17.2 million common shares were issued to Orion on October 15, 2025. On October 28, 2025, Orion exercised its conversion option for a total of $32.5 million of the principal amount and accrued interest of the Notes in exchange for 8.6 million common shares of the Company. The 8.6 million common shares were issued to Orion on October 29, 2025. In addition to the $166.7 million fair value loss recognized on the embedded derivative shown in the table above, a $4.3 million loss was recorded on extinguishment of the host debt resulting in a consolidated loss on convertible debt of $171.0 million being recognized in the Consolidated Statements of Loss for the year ended December 31, 2025. The effective interest was 26.1% and 26.8% for the Notes and PPA, respectively, for the fiscal year ended December 31, 2025. Production Payment Agreement and Royalty Under the terms of the PPA, Orion receives (i) fixed payments of $0.128 per tonne ($0.152 per tonne if the Delayed Draw Notes have been drawn) of the total lithium processed each year at Thacker Pass for a period of 72 quarters after first production, and (ii) variable payments of 0.96% (1.14% if the Delayed Draw Notes have been drawn) of total gross revenue in perpetuity, with the fixed and variable portions both applying to the first 41,500 tonnes of lithium processed each year, subject to certain adjustments relating to Thacker Pass total Phase 1 project costs. The production payments are also subject to certain adjustments relating to the tonnage of battery-grade lithium carbonate equivalent sold. The variable payments are also subject to certain adjustments related to the future price of lithium. In addition, the Company is obligated under a separate 2013 royalty agreement to pay an 8% gross revenue royalty for sales on production from all Thacker Pass mineral claims up to a cumulative payment of $22.0 million, after which the royalty rate is reduced to 4% for the remaining life of the project. The Company has the option at any time to reduce the royalty to 1.75% through payment of $22.0 million. The portion of the royalty subject to repurchase has been recorded as a financial liability carried at amortized cost. The Company is also obligated to pay a 20% royalty on revenue solely in respect of uranium sales, if any.
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Stockholders' Equity |
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| Stockholders' Equity | 12. STOCKHOLDERS’ EQUITY Share Capital The Company is authorized to issue an unlimited number of common shares. At December 31, 2025, 314.3 million (2024 - 218.5 million) common shares were issued and outstanding. The Company is authorized to issue an unlimited number of voting and non-voting preferred shares. At December 31, 2025 and December 31, 2024, no preferred shares were issued. Common stock - At-the-Market Program On May 15, 2025, the Company entered into an equity distribution agreement, pursuant to which the Company may sell its common shares, no par value, up to a maximum aggregate offering price of $100.0 million (or the equivalent in Canadian dollars) (the “May 2025 ATM Program”). On October 1, 2025, the Company completed the May 2025 ATM Program and sold 26.9 million common shares at an average price of $3.71 per share, for aggregate net proceeds of $97.8 million after sales agent's commission and other expenses. On October 8, 2025, the Company entered into an equity distribution agreement, pursuant to which the Company may sell its common shares, no par value, up to a maximum aggregate offering price of $250.0 million (or the equivalent in Canadian dollars) (the “October 2025 ATM Program”). On October 14, 2025, the Company completed the October 2025 ATM Program and sold 30.5 million common shares at an average price of $8.19 per share, for net proceeds of $246.4 million after sales agent's commission and other expenses. On November 13, 2025, the Company entered into an equity distribution agreement, pursuant to which the Company may sell its common shares, no par value, up to a maximum aggregate offering price of $250.0 million (or the equivalent in Canadian dollars) (the “November 2025 ATM Program”). As of December 31, 2025, the Company had sold 10.8 million common shares at an average price of $5.37 per share, for net proceeds of $57.0 million after sales agent's commission and other expenses. Subsequent to December 31, 2025, the Company completed the November 2025 ATM Program (Note 22). Equity Financing On April 22, 2024, the Company completed an underwritten public offering of 55.0 million common shares at a price of $5.00 per share for aggregate gross proceeds to the Company of $275.0 million (net proceeds of $262.1 million). Equity Incentive Plan On October 3, 2023, the Company adopted an equity incentive plan (the “Plan”), which includes stock options, RSUs, DSUs, and PSUs up to an aggregate total of 8.9% of the Company’s issued and outstanding common stock. On June 11, 2025, the Company's shareholders approved an amended and restated Plan, which among other changes, increased the maximum number of common shares available for issuance under the Plan by 14 million common shares. All instruments issued under the Plan are classified as equity and presented in Common stock. Stock-based compensation for the following equity instruments is as follows. For the year ended December 31, 2025, $6.2 million (2024 - $5.2 million) was recognized in General and administrative expense.
During the year ended December 31, 2025, stock-based compensation related to RSUs of $1.6 million was capitalized to Thacker Pass (2024 - $2.4 million). During the year ended December 31, 2025, no stock-based compensation related to PSUs was capitalized to Thacker Pass (2024 - $0.3 million). At December 31, 2025, $0.7 million of stock-based compensation related to DSUs was accrued for the year ended December 31, 2025 (2024 - $0.6 million) with $0.7 million charged to additional paid-in capital for the year ended December 31, 2025 (2024 - $0.6 million). Restricted Share Units The Company grants RSUs to executives and eligible employees with RSUs vesting either immediately or ratably over a three-year service period. The Company settles all RSUs in common shares at the direction of the holder, once vested. The total estimated fair value of RSUs granted was $10.2 million for the year ended December 31, 2025 (2024 - $9.3 million) based on the market value of the Company’s common shares on the grant date with a weighted average fair value of $2.58 at December 31, 2025 (2024 – $4.82). As at December 31, 2025, there was $4.6 million (2024 - $4.2 million) of total unrecognized stock-based compensation expense relating to unvested RSUs. At December 31, 2025, unrecognized compensation costs related to unvested RSUs is expected to be recognized over approximately 3 years. During the year ended December 31, 2025, 1.4 million RSUs were issued for settlement of the 2024 annual bonuses totaling $3.5 million, which were accrued at December 31, 2024. A summary of changes to the number of outstanding RSUs is as follows:
Deferred Share Units The Company grants DSUs to eligible directors of the Company. DSUs vest immediately and are redeemable for common shares following retirement or termination from the board of directors. A summary of changes to the number of outstanding DSUs is as follows:
Performance Share Units The Company grants PSUs to certain executives. PSUs generally vest after three years subject to performance conditions and/or multipliers. The fair value of PSUs granted is estimated using a valuation model based on a Monte Carlo simulation model, which calculates potential outcomes and the probability weighted average payout. The fair value is estimated using inputs including: (a) the share price at the valuation date in USD of the Company and peer companies; (b) the share volatility of the Company and peer companies over the vesting period; and (c) the risk-free rate based on U.S. Treasury yields matching the PSU vesting period. The total estimated fair value of the PSUs granted was $3.0 million for the year ended December 31, 2025 (2024 - $2.8 million) based on the weighted average fair value of $3.94 at December 31, 2025 (2024 - $6.32). PSUs vest and holders are entitled to them on the expiry of the applicable restricted period (vesting period) in the amount equal to the number granted multiplied by a final performance multiplier, which is determined based on the performance of the Company’s share price relative to a selected group of peer companies. At December 31, 2025, unrecognized stock-based compensation expense related to unvested PSUs granted was $3.1 million (2024 – $2.4 million). A summary of changes to the number of outstanding PSUs is as follows:
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Loss Per Share |
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| Earnings Per Share [Abstract] | |
| Loss Per Share | 13. LOSS PER SHARE Basic and diluted net loss per share is computed by dividing the net loss attributable to the Company’s shareholders by the weighted average number of common shares outstanding during the reporting period. Diluted net loss per share is computed similar to basic net loss per share, except the weighted average number of common shares outstanding are increased to include additional shares from the assumed exercise of equity instruments, if dilutive. Potentially dilutive common shares include stock options, RSUs, DSUs, and PSUs. |
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| Management and Incentive Fees Expense [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Management Compensation | 14. MANAGEMENT COMPENSATION The Company's key management includes the executive management team who supervise day-to-day operations and independent directors on the Company's Board of Directors who oversee management. Their compensation is as follows:
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General and Administrative Expenses |
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Dec. 31, 2025 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| General and Administrative Expense [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| General and Administrative Expenses | 15. GENERAL AND ADMINISTRATIVE EXPENSES The following table summarizes the Company’s general and administrative expenses:
1 Other includes a $14.1 million contribution toward funding the construction of the new Orovada K-8 school for the year ended December 31, 2025. |
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Transaction Costs |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investments [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Transaction Costs | 16. TRANSACTION COSTS Prior to determining an underlying transaction is probable, the Company expenses transaction costs as incurred. Transactions that are subject to a final investment decision are not considered probable prior to such decision. The Company also expenses transaction costs associated with the origination of financial instruments that will be subsequently measured at fair value. The Company has expensed transactions costs in relation to the following transactions and has presented these costs in Other income (expense) in the Consolidated Statements of Loss:
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Segmented Information |
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Dec. 31, 2025 | |
| Segment Reporting [Abstract] | |
| Segmented Information | 17. SEGMENTED INFORMATION The Company’s combined to form the Chief Operating Decision Maker (“CODM”) of the Company throughout 2025 and 2024. The CODM evaluates how the Company allocates resources, assesses performance and makes strategic and operational decisions. Based upon such evaluation, the Company has determined that the Company operates in one operating and reporting segment as well as one geographical area, monitored on a consolidated basis consistent with the full entity reporting. Substantially all the assets and the liabilities of the Company relate to Thacker Pass. The accounting policies of the segment are described in the summary of accounting policies. The CODM determines how to allocate resources based on projected funding requirements related to the advance of construction and development at Thacker Pass. Net loss, expense and asset reporting to the CODM is as presented in the consolidated financial statements. |
Income Taxes |
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| Income Tax Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes | 18. INCOME TAXES The following table represents the major components of income/(loss) before income tax recognized in the Consolidated Statements of Loss:
A reconciliation of income taxes at the Canadian statutory federal rate of 15% is as follows:
The significant components of deferred income tax assets and liabilities were:
The Company has non-capital loss carryforwards in (i) the US of approximately $288.5 million (2024 - $257.6 million) of which $38.8 million expires between and and the remaining amount has no fixed date of expiry and (ii) Canada of $16.2 million (2024 - $15.9 million) expiring in . The non-capital loss carryforwards are available to reduce taxable income in the US and Canada, respectively. The Company has recognized a valuation allowance to the extent the recovery of deferred tax assets cannot be supported by the reversal of taxable temporary differences, as recovery of these deferred tax assets is not considered “more likely than not”. |
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Supplemental Disclosure With Respect to Cash Flows |
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| Supplemental Cash Flow Elements [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Supplemental Disclosure With Respect to Cash Flows | 19. SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS Other cash information during the years ended December 31 were as follows:
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Fair Values of Financial Instruments |
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Values of Financial Instruments | 20. FAIR VALUES OF FINANCIAL INSTRUMENTS (a) Financial instruments not measured at fair value Except as disclosed below, the carrying value of the financial assets and liabilities, where the measurement basis is other than fair value, approximate their fair values due to the immediate or short-term nature of these instruments considering there have been no significant changes in credit and market interest rates since original date. Cash and restricted cash, receivables, accounts payable, royalty obligations, Notes, PPA, and DOE Loan are measured at amortized cost. (b) Measurement of fair value Financial instruments recorded at fair value on the Consolidated Balance Sheets and presented in fair value disclosures are classified using a fair value hierarchy that reflects the significance of the inputs used in making the measurements. The fair value hierarchy has the following levels:
• Level 1 - Quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets or liabilities; • Level 2 - Inputs other than quoted prices within Level 1 that are observable for the asset or liability, either directly or indirectly; and • Level 3 – Inputs for assets and liabilities that are both significant to the fair value measurement and unobservable (supported by little or no market activity). The fair value hierarchy requires the use of observable market inputs whenever such inputs exist. A financial instrument is classified in the lowest level of the hierarchy for which a significant input has been considered in measuring fair value. The following table identifies the Company’s assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy. The carrying value is equal to the fair value at each date reported.
1 A loss on change in fair value of $0.2 million (2024 - $2.0 million) was recognized in the Consolidated Statements of Loss for the year ended December 31, 2025. 2 The fair value was based on a review of Ascend Elements’ business development, financings and trends in the share prices of other companies in the same industry sector. A gain on change in fair value of $0.9 million (2024 - loss of $5.0 million) was recognized in the Consolidated Statements of Loss for the year ended December 31, 2025. 3 The fair value of the LAC Warrant at inception on October 7, 2025 and at December 31, 2025 was calculated using Level 3 inputs and represents the intrinsic value using a share price of $4.36 at December 31, 2025 ($8.27 at October 7, 2025), assumed exercise price of $0.01 per share and estimates of the impact of increases to equity prior to the number of shares being fixed at the time of issuance of the warrant certificates. A gain on the change in fair value of $59.6 million was recognized in the Consolidated Statement of Loss for year ended December 31, 2025. 4 The fair value of the JV Warrant inclusive of the Put, Call and Exchange Agreement obligations at inception on October 7, 2025 and at December 31, 2025 was calculated using Level 3 inputs including the implied value of the underlying Non-Voting Units, calculated by reference to the market capitalization of the Company's common shares and the estimated fair value of assets and liabilities of the Company other than its interest in Lithium Nevada Ventures (at the valuation dates, as well as an estimate of time value based on the assumed exchange ratio of 7.82% at October 7, 2025 and at December 31, 2025 and estimated impacts of anticipated future increases in net assets above the JV). A gain on change in fair value of $100.4 million was recognized in the Consolidated Statements of Loss for year ended December 31, 2025. 5 The fair value of the conversion derivative was determined using a Partial Differential Equation method with the following inputs and assumptions at December 31, 2025: expected volatility of 47%, share price of $4.36, risk-free rate of 3.66%, and no expected dividends. The fair value at inception on April 1, 2025 was determined using the following inputs: expected volatility of 35.2%, share price of $2.76, risk-free rate of 3.9%, and no expected dividends. A loss on change in fair value of the embedded derivative of $166.7 million was recognized in the Consolidated Statements of Loss for the year ended December 31, 2025 (Note 11). The Company has, where appropriate, estimated the fair value of financial instruments for which the amortized cost carrying value may be significantly different than the fair value. At December 31, 2025 and December 31, 2024, this includes the following:
1 The estimated fair value involved Level 3 inputs and was determined using a discounted cash flow with a discount rate of 26.1% at December 31, 2025 (2024 - 12.3%). 2 The estimated fair value involved Level 3 inputs and was determined using a discounted cash flow with the following inputs and assumptions: average lithium production of 41,500 tonnes per year, average lithium price of $15,082 per tonne and discount rate of 26.8%. 3 The estimated fair value involved Level 3 inputs and was determined using a discount rate of 26.1%. 4 The estimated fair value involved Level 3 inputs and was determined using a discounted cash flow with a discount rate of 8.0% at December 31, 2025. |
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Commitments |
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| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commitments | 21. COMMITMENTS The Company has entered into certain long-term purchase agreements related to long-lead equipment, infrastructure and services related to the construction of the processing plant as well as development and mining services at Thacker Pass. These agreements contain certain fixed and determinable cost components, as well as components that are variable based on time and materials. The following represents the fixed and determinable portion of the commitments, excluding lease components disclosed in Note 10, for each of the next five years. There were no commitments under these agreements at December 31, 2024.
Transload Terminal Services Agreement and U.S. Department of War (formerly the Department of Defense) Grant LN is party to a Transload Terminal Services Agreement (the “Terminal Agreement”) executed on October 28, 2024, to finance the construction of a railcar and truck terminal (the “Terminal”) in Winnemucca, Nevada. The initial term of the Terminal Agreement is 10 years with two automatic extensions of 5 years each. A third-party developer has agreed to fund approximately $95.0 million to finance the construction of the Terminal through a finance lease to the Company. Under the terms of the lease, the Company expects lease payments to be approximately $20.5 million per year for each of the first 10 years and $6.7 million per year for each of the second 10 years, with an early buyout option to purchase the Terminal. The total amount funded by the third-party developer and the amount of the future lease payments will be determined upon commencement of the lease at a future date. The arrangement is a build-to-suit arrangement and the Company has been involved in the design and construction of the Terminal prior to the anticipated lease commencement. Accordingly, the Company has determined it controls the Terminal during the construction period and will record construction costs incurred during the construction period as a construction-in-process asset and a related financing obligation on the Company’s Consolidated Balance Sheets. The Company’s interest in the Terminal Agreement serves as collateral under the DOE Loan (Note 3). While not a commitment of the Company, on August 5, 2024, the Company received approval for a $11.8 million grant from the U.S. Department of War (formerly the Department of Defense) to support an upgrade of the local power infrastructure and to help build a transloading facility, which is part of the construction of the Terminal. The monies available under the grant will be available as costs are incurred. As of December 31, 2025, the Company has received $1.1 million (2024 - $nil) and has a receivable of $2.4 million (2024 - $nil). |
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Subsequent Events |
12 Months Ended |
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Dec. 31, 2025 | |
| Subsequent Events [Abstract] | |
| Subsequent Events | 22. SUBSEQUENT EVENTS Common stock - At-the-Market Program On January 26, 2026, the Company completed the November 2025 ATM Program and sold 32.5 million common shares at an average price of $5.92 per share, for aggregate net proceeds of $189.7 million after sales agent's commission and other expenses. LAC Warrant and JV Warrant On January 30, 2026 (the “Issuance Date”), as required under the OWCA: • The Company issued to the DOE the LAC Warrant. The LAC Warrant is to purchase up to 18,268,687 Common Shares, which is equal to 5% of the Company’s outstanding total shares as of the Issuance Date, with an exercise price of $0.01 per share, exercisable for ten years from the Issuance Date, subject to customary anti-dilution adjustments and other terms set forth in the LAC Warrant. • The JV issued to the DOE the JV Warrant providing for, among other things, the right to purchase 8,656,509,695 Non-Voting Units, which is equal to a 5% economic interest in the JV as of the Issuance Date, at an exercise price of $0.0001 per Non-Voting Unit, exercisable for ten years from the Issuance Date, subject to customary anti-dilution adjustments and other terms set forth in the JV Warrant. The number of Non-Voting Units underlying the JV Warrant is 8,656,509,695, which is equal to a 5% economic interest in the JV as of the Issuance Date. • The JV, the Company, B.C. Corp, the LAC JV Member, GM and the DOE, entered into the Put, Call and Exchange Agreement. Borrowings under the DOE Loan On February 24, 2026, LN received its second advance under the DOE Loan of $432.0 million. |
Summary of Significant Accounting Policies (Policies) |
12 Months Ended |
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Dec. 31, 2025 | |
| Accounting Policies [Abstract] | |
| Basis of Presentation | Basis of Presentation These consolidated financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“U.S. GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) and are presented on a historical cost basis, except as otherwise disclosed. These consolidated financial statements have been prepared on the assumption that the Company is a going concern and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business for the next 12 months. |
| Principles of Consolidation | Principles of Consolidation These consolidated financial statements include the accounts of Lithium Americas Corp., its wholly owned subsidiaries, and a variable interest entity (“VIE”) in which it is the primary beneficiary. The Company consolidates entities that are VIEs when the Company determines it is the primary beneficiary. Generally, the primary beneficiary of a VIE is a reporting entity that has (a) the power (including relative power) to direct the activities that most significantly affect the VIE’s economic performance, and (b) the obligation to absorb losses of, or the right to receive benefits from, the VIE that could potentially be significant to the VIE. All intercompany balances and transactions between the Company and its subsidiaries have been eliminated on consolidation. |
| Use of Estimates | Use of Estimates Accounting estimates are an integral part of the consolidated financial statements. The preparation of these estimates requires the use of judgments and assumptions that affect the amounts reported in these consolidated financial statements and accompanying notes. The most significant areas requiring the use of management estimates and judgment relate to the accounting for the joint venture with GM, the accounting for debt and debt facilities including embedded derivatives, the accounting for the Notes and the accounting for the DOE Loan and warrant obligations, including fair value movements, the accounting for contracts on own equity, asset retirement obligations, assessments of impairment for Thacker Pass and the fair value of financial instruments including marketable and equity securities. The Company bases its estimates and assumptions on historical experience and other factors believed to be reasonable at the time the estimate was made. However, due to the inherent uncertainties in making estimates, actual results may differ from amounts estimated in these consolidated financial statements and such differences could be material and require adjustments to reported amounts in future periods. In particular, it is reasonably possible that the estimate for the embedded conversion option in the Orion convertible debt and the value of the obligations for the LAC Warrant and JV Warrant could change in the near term in amounts that could be material, in particular, as a result of changes in the Company’s share price and, in the case of the LAC Warrant and the JV Warrant, additional issuance of equity by the Company, or changes in lithium prices. Further information related to risks and uncertainties are disclosed in notes 3, 11 and 20. |
| Functional and Reporting currency | Functional and Reporting Currency The functional and reporting currency of the Company and each of its subsidiaries is the U.S. dollar. Monetary assets and liabilities denominated in foreign currencies are translated into U.S. dollars at the rates of exchange prevailing at the consolidated balance sheet dates. Transactions in currencies other than the functional currency are measured and recorded in the functional currency at the exchange rate prevailing on the transaction date, and exchange differences arising on remeasurement are recognized in the Consolidated Statements of Loss. |
| Cash and Cash Equivalents | Cash and Restricted Cash Cash consists of cash held with banks and their carrying amounts approximate their fair value. The Company maintains certain cash balances that are subject to contractual restrictions and therefore not available for general corporate purposes. Restricted cash includes funds that may only be used to finance or pay for specific expenditures related to the construction of Thacker Pass, as defined under the terms of applicable agreements. Transfers of restricted cash for approved project expenditures are made in accordance with the terms of the governing agreements. Once funds are disbursed for qualifying expenditures, the related amounts are no longer considered restricted. The Company classifies restricted cash as current or non-current based on the expected timing of when the restrictions will lapse or the funds are expected to be used. |
| Investments | Investments The Company’s investments in equity securities are measured at fair value at each period end with changes in fair value recognized in the Consolidated Statements of Loss. |
| Mineral Properties, Plant and Equipment | Mineral Properties, Plant and Equipment Property, plant and equipment (excluding mineral properties) Property, plant and equipment (“PP&E”) is recorded at cost, net of accumulated depreciation. Expenditures for new assets and expenditures that extend the useful lives of existing assets are capitalized. Depreciation of ‘Machinery and equipment’ and ‘Property, plant and equipment’ is computed using the straight-line method over the estimated useful productive life of the assets, which ranges from 2 - 30 years. Leasehold improvements are amortized over the period of the lease or life of the asset, whichever is shorter. Amortization of right-of-use assets is included in depreciation expense. Construction-in-process (“CIP”) assets are reclassified to their final PP&E account and begin depreciation when the asset is substantially complete and ready for its intended use. The assets’ residual values, useful lives, and depreciation methods are reviewed periodically and adjusted, if appropriate, when warranted. Gains or losses arising on the disposal of items of PP&E are determined as the difference between the sale proceeds and the carrying amount of the assets and are recognized in the Consolidated Statements of Loss. Mineral Properties Mineral properties are recorded at cost at the acquisition date. Prior to having proven and probable reserves and the right to exploit a mineral property, a mineral property is in the exploration stage. When the Company has obtained the rights to exploit a mineral property and the property has proven and probable reserves, as defined by S-K 1300, the project is in the development stage and capitalization of mine development project costs begins. Mineral reserves represent the estimate of ore that can be economically and legally extracted from the Company's mining properties. Costs are capitalized for an ore body in the development stage where proven and probable reserves exist and the activities are directed at obtaining additional information on the ore body or converting additional resources to proven and probable reserves. Development costs capitalized in the development stage include engineering and metallurgical studies, drilling and other related costs to delineate an ore body and the removal of overburden to initially expose an ore body at open pit surface mines (pre-stripping). Mineral properties in the exploration or development stage are not amortized until the underlying property is converted to the production stage, at which point the mineral property will be amortized using the units-of-production method based on the estimated recoverable reserves. The production phase of an open pit mine commences when saleable minerals, beyond a de minimis amount, are produced. Thacker Pass Construction-in-process assets The Company capitalizes costs related to the construction of processing and other facilities associated with specific mineral properties, once the associated mineral property has reached the development phase. CIP assets primarily consist of infrastructure development, camp and lodging expenditures, equipment purchases, salary, consulting and other directly attributable costs incurred during the construction phase. Depreciation related to assets used directly in construction is capitalized. Interest incurred during construction is capitalized. Upon completion of construction, CIP assets are reclassified to the appropriate property, plant and equipment categories and depreciated over their estimated useful lives using the units-of-production method or another appropriate depreciation method. |
| Impairment of Long-lived Assets | Impairment of Long-lived Assets The Company reviews and evaluates its long-lived assets, which include property, plant and equipment, mineral properties and CIP assets, for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Events or circumstances that could indicate impairment include, but are not limited to, significant decreases in the market price of the assets, adverse changes in legal factors or the business climate, including changes in commodity prices, changes to the extent or manner in which the asset is being used or its physical condition, and costs significantly in excess of the amount originally expected. In estimating future cash flows, assets are grouped at the lowest level for which there are identifiable cash flows that are largely independent of future cash flows from other asset groups. An impairment is determined to exist if the total undiscounted projected pre-tax future cash flows are less than the carrying amount of a long-lived asset or asset group. Once it is determined that an impairment exists, an impairment loss is measured and recorded based on the difference between the estimated fair value of the long-lived assets being tested for impairment and their carrying amounts. This process involves significant judgments and estimates, including commodity prices, production costs, life of mine plans and discount rates. |
| Leases | Leases The Company leases office space, equipment, vehicles, and land. At the inception of a contract, the Company assesses whether a contract is or contains a lease. A contract contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. If the contract is determined to be a lease, it is classified as either an operating or a finance lease. Operating and finance lease right-of-use (“ROU”) assets and lease liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the lease term. When the rate implicit in the lease cannot be readily determined, the Company utilizes its incremental borrowing rate to determine the present value of future lease payments. Operating lease ROU assets are included in Other assets, and lease obligations are included in Lease liabilities on the Consolidated Balance Sheets. Finance lease ROU assets are included in Mineral properties, plant and equipment, and lease obligations are included in Lease liabilities on the Consolidated Balance Sheets. Operating lease costs are recognized on a straight-line basis over the lease term and are included in Operating expenses in the Consolidated Statements of Loss. Finance lease costs are recognized as interest costs based on the effective interest method for the lease liability and straight-line amortization of the ROU asset. Variable lease payments are recognized in the period in which they are incurred. Leases with a term of one year or less are not recognized on the Consolidated Balance Sheets and are recognized on a straight-line basis. Additionally, the Company has elected the practical expedient to not separate lease and non-lease components. |
| Debt and debt facilities | Debt and debt facilities The Company accounts for debt instruments, including convertible debt and the U.S. Department of Energy (“DOE”) loan, as financial liabilities recorded at amortized cost unless a fair value election is applied. Interest cost is capitalized where the proceeds are used to fund the development of qualifying assets. Initial proceeds received are allocated between the debt host and any embedded derivative and other instruments in the same transaction. Any resulting discount is accreted over the term of the debt instrument using the effective interest rate method. Embedded derivative features required to be separated by U.S. GAAP are carried at fair value with changes in fair value recognized through income or loss. Direct and incremental costs incurred to obtain a debt facility, including fees paid to the lender and third-party transaction costs, are deferred once the facility is considered probable and are recorded as deferred financing costs associated with the loan commitment and are reclassified as a discount on debt once drawn, in proportion to amounts borrowed against total borrowings expected under the facility. |
| Contracts on own equity | Contracts on own equity Contracts or embedded derivative features to issue common shares, other than through share-based payments issued in connection with goods or services, are evaluated to determine whether they are classified as financial liabilities or equity. Contracts on the Company's own equity include the conversion feature in the convertible debt and the warrants and exchange obligations issued to the DOE. Contracts that may be settled net in cash outside the control of the Company or are not indexed to equity are treated as financial liabilities, recorded at fair value with changes recorded through income or loss. To the extent an instrument subsequently becomes indexed to own equity and is eligible to be classified as equity, it is reclassified to equity at its fair value on the date of reclassification. |
| Royalties and Production Payments | Royalties and Production Payments Royalties on future production or sales are reported based on their underlying characteristics. When indicated by their terms, royalties and production payments are treated as financial liabilities, such as those subject to call options for a specified price or those sold on proven properties and settleable with cash flows in which the Company has significant continuing involvement. The Company determines interest expense associated with such financial liabilities based on the amortized cost method using a retrospective approach. Under the retrospective approach, the carrying value of the liability is subsequently measured as the discounted present value of estimated remaining cash flows, using the current effective interest rate derived from the original proceeds, cash flows to date and the estimated remaining cash flows. The Company accounts for the production payment as debt that is recorded at amortized cost. The discount portion is accreted over the term of the debt instrument using the effective interest rate method. |
| Reclamation Liabilities | Reclamation Liabilities Reclamation obligations are initially recognized when incurred and recorded as liabilities at their estimated fair value. The fair value of the liability is determined using expected future cash outflows, discounted to present value using a credit-adjusted risk-free rate. The estimated fair value reflects the cost of decommissioning and restoring the site at the end of the asset’s useful life. The liability is subsequently accreted over time, based on the original discount rate. The corresponding asset retirement cost is capitalized as part of the asset’s carrying value and amortized over the useful life of the related asset. Reclamation obligations are periodically adjusted to reflect changes in the estimated present value resulting from the passage of time and revisions to the estimates of either the timing or amount of the reclamation costs. The estimated reclamation obligation is based on when spending for an existing disturbance is expected to occur. The Company reviews, on an annual basis, or more frequently if significant changes in estimates occur, the reclamation obligation for its project. |
| Non-controlling Interests in Lithium Nevada Ventures LLC | Non-controlling Interests in Lithium Nevada Ventures LLC As at December 31, 2025, the Company owned a 62% interest in Lithium Nevada Ventures LLC (“Lithium Nevada Ventures”) which holds a 100% interest in Thacker Pass. General Motors Holdings LLC owns the remaining 38% interest in Lithium Nevada Ventures. The Company allocates the equity and income of Lithium Nevada Ventures based on a Hypothetical Liquidation at Book Value (“HLBV”) method. The HLBV accounting method is an approach that calculates the change in the claims of each member on the net assets of the investment at the beginning and end of each period. Each member’s claim is equal to the amount each party would receive or pay if the net assets of the investment were to liquidate at book value. |
| Income Taxes | Income Taxes The Company accounts for income taxes using an asset and liability approach, which results in the recognition of deferred tax assets and liabilities for the expected future tax benefits or consequences of temporary differences between the financial reporting basis and the tax basis of assets and liabilities, as well as operating loss and tax credit carryforwards, using enacted tax rates in effect in the years in which the differences are expected to reverse. Deferred tax liabilities are not provided on differences between the carrying value and tax basis of the net equity of foreign subsidiaries, including unremitted earnings when applicable, where such differences are indefinitely reinvested and not expected to reverse in the foreseeable future. A valuation allowance is provided for deferred tax assets if it is determined that the realization of a future tax benefit is not more likely than not. |
| Stock-Based Compensation | Stock-Based Compensation The Company’s equity incentive plan allows for the grant of share options, restricted share units (“RSUs”), performance share units (“PSUs”) and deferred share units (“DSUs”). The cost of equity-settled payment arrangements is recorded based on the estimated fair value at the grant date and charged to earnings over the vesting period. Each tranche in an award is considered a separate award with its own vesting period and grant date fair value. The fair value of each tranche is measured at the date of grant using the appropriate pricing model, including Monte Carlo simulation methodology for performance share units including a market-related condition. Stock-based compensation expense is recognized over the tranche’s vesting period based on the number of awards expected to vest. The number of awards expected to vest, and the estimated forfeiture rate is reviewed at least annually with any impact being recognized immediately. |
| Loss per Common Share | Loss per Common Share Basic loss per share is computed by dividing the net loss attributable to shareholders of the Company by the weighted average number of common shares outstanding during the reporting period. |
| Recently Issued Accounting Pronouncements | Recently Issued Accounting Pronouncements In December 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2025-10 “Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities”. ASU 2025-10 established authoritative guidance for the accounting for a government grant received by a business entity, including guidance for a grant related to an asset and a grant related to income. This guidance is effective for annual reporting periods beginning after December 15, 2028, and interim reporting periods within those annual reporting periods. The Company is currently evaluating the impact of the guidance on the consolidated financial statements. In November 2024, the FASB issued ASU 2024-03, “Income Statement – Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40) - Disaggregation of Income Statement Expenses” which requires public companies to provide enhanced disclosures in the notes to the financial statements on the nature of certain expense captions presented on the face of the Consolidated Statements of Loss. The new guidance is effective for annual reporting periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of the guidance on the consolidated financial statements. Recent Accounting Pronouncements Adopted In November 2023, the FASB issued ASU 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” ASU 2023-07 expands public entities’ segment disclosures by requiring more detailed information about a reportable segment’s profit or loss and assets. ASU 2023-07 applies to all public entities that are required to report segment information in accordance with ASC 280 “Segment Reporting” and was effective for the Company for the fiscal year ended December 31, 2024 and interim periods commencing in fiscal 2025. The adoption did not have a material impact on the Company's consolidated financial statements or disclosures. In December 2023, the FASB issued ASU 2023-09 “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” ASU 2023-09 requires disaggregated information about effective tax rate reconciliation and additional information on taxes paid that meet a qualitative threshold. The guidance is effective for the Company for the fiscal year ended December 31, 2025, and subsequent interim periods. The adoption did not have a material impact on the Company's consolidated financial statements or disclosures. |
U.S. Department of Energy Loan Facility (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of Initial Recognition of Loan |
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| Summary of Fair Value of the Warrant Obligations | The following table represents a reconciliation from the initial recognition of the obligations pursuant to the LAC Warrant and JV Warrant on October 7, 2025 to the fair value of the warrant obligations at December 31, 2025:
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Transactions With General Motors Holdings LLC (Tables) |
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| Joint Venture Formation [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Net Assets, Respective Interests and Non-controlling Interest | The net assets, respective interests and non-controlling interest of Lithium Nevada Ventures are as follows:
1 The Company allocates income and net assets between the controlling and non-controlling interests based on a hypothetical liquidation at book value. |
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Cash and Restricted Cash (Tables) |
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| Cash and Cash Equivalents [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Summary of Cash and Restricted Cash |
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Investments Measured At Fair Value (Tables) |
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| Schedule of Investments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Summary Of Investments Measured At Fair Value |
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Mineral Properties, Plant and Equipment, Net (Tables) |
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| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Mineral Properties, Plant and Equipment, Net |
1
At December 31, 2025, includes prepaid construction costs of $75.0 million and deposits on long-lead equipment of $268.7 million, all related to Thacker Pass. In addition, amount includes capitalized amounts for deferred interest on the Notes of $13.0 million, discount amortization of $9.1 million on the Notes and PPA, deferred interest on the DOE Loan of $2.3 million, and $3.2 million (2024 - $2.8 million) of interest on other loans. |
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Other Assets (Tables) |
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| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Other Assets |
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Accrued Liabilities (Tables) |
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| Accrued Liabilities, Current [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Accrued Liabilities | Accrued liabilities are comprised of the following items:
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Leases and Other Liabilities (Tables) |
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| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Lease Liabilities | Lease liabilities include the following:
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| Schedule of Future Minimum Lease Payments Under Noncancellable Finance and Operating Leases | The following is a schedule of future minimum lease payments under noncancellable finance and operating leases as of December 31, 2025.
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| Schedule of Fixed and Determinable Portion of Commitments, Excluding Lease Components with Maturity | The following represents the fixed and determinable portion of the commitments, excluding lease components disclosed in Note 10, for each of the next five years.
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Convertible Debt, Royalty and Production Payment Arrangements (Tables) |
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| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Proceeds of Investment | On April 1, 2025, the Company allocated the proceeds of the Orion Investment as follows:
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| Schedule of Reconciliation Includes Initial Recognition of the Components of Investment | The following reconciliation includes initial recognition of the components of the Orion Investment and activity to December 31, 2025:
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| Summary of royalty subject to repurchase recorded as a financial liability | The portion of the royalty subject to repurchase has been recorded as a financial liability carried at amortized cost.
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Stockholders' Equity (Tables) |
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| Equity [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of Recognition of Stock-Based Compensation | Stock-based compensation for the following equity instruments is as follows.
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| Summary of Changes to the Number of Outstanding RSUs | A summary of changes to the number of outstanding RSUs is as follows:
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| Summary of Changes to the Number of Outstanding DSUs | A summary of changes to the number of outstanding DSUs is as follows:
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| Summary of Changes to the Number of Outstanding PSUs | A summary of changes to the number of outstanding PSUs is as follows:
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Management Compensation (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Management and Incentive Fees Expense [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of Compensation | The Company's key management includes the executive management team who supervise day-to-day operations and independent directors on the Company's Board of Directors who oversee management. Their compensation is as follows:
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General and Administrative Expenses (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| General and Administrative Expense [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of General and Administrative Expenses | The following table summarizes the Company’s general and administrative expenses:
1
Other includes a $14.1 million contribution toward funding the construction of the new Orovada K-8 school for the year ended December 31, 2025. |
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Transaction Costs (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investments [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Investment Transaction Costs | The Company has expensed transactions costs in relation to the following transactions and has presented these costs in Other income (expense) in the Consolidated Statements of Loss:
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Income Taxes (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Tax Expense (Benefit), Continuing Operations [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Components of Income/(Loss) Before Income Tax | The following table represents the major components of income/(loss) before income tax recognized in the Consolidated Statements of Loss:
|
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| Schedule of Reconciliation of Income Taxes | A reconciliation of income taxes at the Canadian statutory federal rate of 15% is as follows:
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| Schedule of Significant Components of Deferred Income Tax Assets and Liabilities | The significant components of deferred income tax assets and liabilities were:
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Supplemental Disclosure With Respect to Cash Flows (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Supplemental Cash Flow Elements [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Other Cash Information | Other cash information during the years ended December 31 were as follows:
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Fair Values of Financial Instruments (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of the Company's Assets and Liabilities Measured at Fair Value on a Recurring Basis | The following table identifies the Company’s assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy.
1 A loss on change in fair value of $0.2 million (2024 - $2.0 million) was recognized in the Consolidated Statements of Loss for the year ended December 31, 2025. 2 The fair value was based on a review of Ascend Elements’ business development, financings and trends in the share prices of other companies in the same industry sector. A gain on change in fair value of $0.9 million (2024 - loss of $5.0 million) was recognized in the Consolidated Statements of Loss for the year ended December 31, 2025. 3 The fair value of the LAC Warrant at inception on October 7, 2025 and at December 31, 2025 was calculated using Level 3 inputs and represents the intrinsic value using a share price of $4.36 at December 31, 2025 ($8.27 at October 7, 2025), assumed exercise price of $0.01 per share and estimates of the impact of increases to equity prior to the number of shares being fixed at the time of issuance of the warrant certificates. A gain on the change in fair value of $59.6 million was recognized in the Consolidated Statement of Loss for year ended December 31, 2025. 4 The fair value of the JV Warrant inclusive of the Put, Call and Exchange Agreement obligations at inception on October 7, 2025 and at December 31, 2025 was calculated using Level 3 inputs including the implied value of the underlying Non-Voting Units, calculated by reference to the market capitalization of the Company's common shares and the estimated fair value of assets and liabilities of the Company other than its interest in Lithium Nevada Ventures (at the valuation dates, as well as an estimate of time value based on the assumed exchange ratio of 7.82% at October 7, 2025 and at December 31, 2025 and estimated impacts of anticipated future increases in net assets above the JV). A gain on change in fair value of $100.4 million was recognized in the Consolidated Statements of Loss for year ended December 31, 2025. 5
The fair value of the conversion derivative was determined using a Partial Differential Equation method with the following inputs and assumptions at December 31, 2025: expected volatility of 47%, share price of $4.36, risk-free rate of 3.66%, and no expected dividends. The fair value at inception on April 1, 2025 was determined using the following inputs: expected volatility of 35.2%, share price of $2.76, risk-free rate of 3.9%, and no expected dividends. A loss on change in fair value of the embedded derivative of $166.7 million was recognized in the Consolidated Statements of Loss for the year ended December 31, 2025 (Note 11). |
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| Summary of Carrying Amount and Fair Values | The Company has, where appropriate, estimated the fair value of financial instruments for which the amortized cost carrying value may be significantly different than the fair value. At December 31, 2025 and December 31, 2024, this includes the following:
1 The estimated fair value involved Level 3 inputs and was determined using a discounted cash flow with a discount rate of 26.1% at December 31, 2025 (2024 - 12.3%). 2 The estimated fair value involved Level 3 inputs and was determined using a discounted cash flow with the following inputs and assumptions: average lithium production of 41,500 tonnes per year, average lithium price of $15,082 per tonne and discount rate of 26.8%. 3 The estimated fair value involved Level 3 inputs and was determined using a discount rate of 26.1%. 4
The estimated fair value involved Level 3 inputs and was determined using a discounted cash flow with a discount rate of 8.0% at December 31, 2025. |
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Commitments (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Fixed and Determinable Portion of Commitments, Excluding Lease Components with Maturity | The following represents the fixed and determinable portion of the commitments, excluding lease components disclosed in Note 10, for each of the next five years.
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Summary of Significant Accounting Policies - Additional Information (Details) |
Dec. 31, 2025 |
Dec. 20, 2024 |
|---|---|---|
| Machinery and Equipment [Member] | Maximum [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Estimated useful life | 30 years | |
| Machinery and Equipment [Member] | Minimum [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Estimated useful life | 2 years | |
| Lithium Nevada Venture LLC [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Ownership percentage | 62.00% | 38.00% |
| Thacker Pass Project [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Ownership percentage | 100.00% | 100.00% |
| General Motors Holdings LLC [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Ownership percentage | 38.00% | 38.00% |
Department of Energy Loan Facility and Warrant Obligations - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Jan. 30, 2026 |
Oct. 20, 2025 |
Oct. 07, 2025 |
Dec. 20, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Oct. 28, 2024 |
|
| Line of Credit Facility [Line Items] | |||||||
| Maximum borrowing capacity | $ 2,260,000 | ||||||
| Loan tenor | 23 years | ||||||
| Warrant conversion rate, description | The sale price for a JV Warrant Sale will be mutually determined in good faith by GM and the DOE. If GM and the DOE cannot agree on the sale price for a JV Warrant Sale within 60 days of delivery of the put notice or if the JV Warrant Sale is not completed within 90 days of the delivery of the put notice, the parties will cause a JV Warrant Exchange to occur. The “Warrant Conversion Rate” will be, as of the time of determination, the product of (i) 100 multiplied by (ii) the quotient obtained by dividing (A) the number of fully diluted Non-Voting Units in the JV held by the DOE by (B) the number of outstanding units in JV held by the Company plus the number of fully diluted Non-Voting Units in the JV held by the DOE. The number of outstanding units in the JV held by the LAC JV Member is subject to adjustment in connection with (i) the funding of any incremental capital contribution to the JV or (ii) the transfer by the LAC JV Member of any units in the JV, in each case in accordance with the Second A&R LLCA.In addition, from and after the earlier of the Scheduled Substantial Completion Date and the Substantial Completion Date of Thacker Pass (as such dates are defined in the Loan Arrangement Reimbursement Agreement), GM has a call right (the “GM Call”) to elect to effect, or cause the JV to effect, a JV Warrant Sale if a price can be agreed upon between GM and the DOE within 60 days of the delivery of the call notice. If GM and the DOE cannot agree on the sale price within 60 days of delivery of the call notice or if the JV Warrant Sale is not completed within 90 days of the delivery of the call notice, the parties will cause a JV Warrant Exchange to occur. | ||||||
| Deferred financing costs | $ 311,808 | $ 11,529 | |||||
| Fair value of warrant at inception | $ 394,116 | 234,091 | |||||
| First drawdown DOE loan | $ 346,638 | $ 350,987 | |||||
| Repayments of loan start date | Jan. 31, 2029 | ||||||
| LAC Warrant [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Warrant obligation, percent | 5.00% | ||||||
| LAC Warrant [Member] | Subsequents Events [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Warrants exercise price | $ 0.01 | ||||||
| JV Warrant [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Warrant obligation, percent | 5.00% | ||||||
| JV Warrant [Member] | Subsequents Events [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Percentage of non-voting non-transferable equity interest | 5.00% | ||||||
| Warrants exercise price | $ 0.0001 | ||||||
| Thacker Pass [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Ownership percentage | 100.00% | 100.00% | |||||
| DOE loan [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Maximum borrowing capacity | $ 2,230,000 | 1,970,000 | |||||
| Aggregate principal amount | 1,970,000 | ||||||
| Construction amount | $ 256,000 | ||||||
| Credit spread | 0.00% | ||||||
| Defer loan amount | $ 184,000 | ||||||
| Additional loan amount in reserve accounts | $ 120,000 | ||||||
| Deferred financing costs | $ 400,200 | ||||||
| Fair value of warrant at inception | 394,100 | ||||||
| Debt facility, cost incurred | 6,100 | ||||||
| First drawdown DOE loan | $ 435,000 | $ 438,761 | |||||
| Fixed contractual interest rate | 4.38% | ||||||
| Debt issuance costs | $ 88,400 | ||||||
| Effective interest | 6.36% | ||||||
| Loan, term | 24 years | ||||||
| DOE loan [Member] | Subsequents Events [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Warrants exercise price | $ 30 | ||||||
| Warrant, description | Each of the LAC Warrant and the JV Warrant shall be automatically exercised in full on a cashless basis immediately prior to expiration, and the LAC Warrant shall additionally be exercised in full via cashless exercise on the 12-month anniversary of the Issuance Date and on each one-year anniversary of such date thereafter if the VWAP of the Common Shares over the 15 Trading Days ending immediately prior to such date exceeds $30.00 per share (as adjusted). | ||||||
| DOE loan [Member] | LAC Warrant [Member] | Subsequents Events [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Warrants to purchase shares of common stock | 18,286,687 | ||||||
| Percentage of non-voting non-transferable equity interest | 5.00% | ||||||
| Warrants exercise price | $ 0.01 | ||||||
| DOE loan [Member] | JV Warrant [Member] | Subsequents Events [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Warrants to purchase shares of common stock | 8,656,509,695 | ||||||
| Percentage of non-voting non-transferable equity interest | 5.00% | ||||||
| Warrants exercise price | $ 0.0001 | ||||||
| Warrant exercisable, term | 10 years | ||||||
| ATVM Loan [Member] | |||||||
| Line of Credit Facility [Line Items] | |||||||
| Maximum borrowing capacity | $ 289,600 |
Department of Energy Loan Facility and Warrant Obligations - Summary of Initial Recognition of Loan (Details) - USD ($) $ in Thousands |
2 Months Ended | 9 Months Ended |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Line of Credit Facility [Line Items] | ||
| Initial recognition on October 20, 2025 | $ 346,638 | |
| Deferred interest cost | 3,761 | $ 12,978 |
| Amortization of debt issuance costs | 588 | |
| Balance, December 31, 2025 | 350,987 | 350,987 |
| DOE loan [Member] | ||
| Line of Credit Facility [Line Items] | ||
| Initial recognition on October 20, 2025 | 435,000 | |
| Initial recognition, debt issuance costs | (88,362) | |
| Deferred interest cost | 3,761 | |
| Amortization of debt issuance costs | 588 | |
| Balance, debt issuance costs | (87,774) | (87,774) |
| Balance, December 31, 2025 | $ 438,761 | $ 438,761 |
Department of Energy Loan Facility and Warrant Obligations - Summary of Fair Value of the Warrant Obligations (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Class of Warrant or Right [Line Items] | |||
| Initial recognition on October 7, 2025 | $ 394,116 | ||
| Gain on change in fair value recognized in the Consolidated Statements of Loss | (160,025) | $ (160,025) | $ 0 |
| Balance, December 31, 2025 | 234,091 | 234,091 | |
| LAC Warrant [Member] | |||
| Class of Warrant or Right [Line Items] | |||
| Initial recognition on October 7, 2025 | 143,391 | 0 | |
| Gain on change in fair value recognized in the Consolidated Statements of Loss | (59,595) | ||
| Balance, December 31, 2025 | 83,796 | 83,796 | 0 |
| JV Warrant [Member] | |||
| Class of Warrant or Right [Line Items] | |||
| Initial recognition on October 7, 2025 | 250,725 | 0 | |
| Gain on change in fair value recognized in the Consolidated Statements of Loss | (100,430) | ||
| Balance, December 31, 2025 | $ 150,295 | $ 150,295 | $ 0 |
Transactions With General Motors Holdings LLC - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Oct. 07, 2025 |
Dec. 20, 2024 |
Oct. 15, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Apr. 01, 2025 |
Oct. 28, 2024 |
|
| Schedule of Equity Method Investments [Line Items] | |||||||
| Proceeds from issuance of non-controlling interest | $ 100,000 | $ 330,000 | |||||
| Cash | 568,226 | 593,885 | |||||
| Amount of letter of credit facility | $ 2,260,000 | ||||||
| Commited contribution | $ 191,600 | ||||||
| Gain/Loss on change in fair value | $ 711 | (6,662) | |||||
| DOE loan [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Amount of letter of credit facility | $ 2,230,000 | $ 1,970,000 | |||||
| GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| GM offtake agreements, description | GM is required to purchase lithium production from Thacker Pass Phase 1, equal to 20% of GM’s specific lithium requirements, up to 100% of Phase 1 production volume (“Phase 1 Offtake Agreement”). Concurrently with closing of the DOE Loan on October 28, 2024, the Phase 1 Offtake Agreement was extended to 20 years to coincide with the expected maturity of the DOE Loan. As part of the formation of the JV on December 20, 2024, GM also entered into an additional 20-year offtake agreement for up to 38% of production volumes from Phase 2 of Thacker Pass and retained its right of first offer on the remaining balance of Phase 2 volumes (“Phase 2 Offtake Agreement” and together with the Phase 1 Offtake Agreement, the “Offtake Agreements”). | ||||||
| Forecast period, description | the forecast period reverts to two years, with the second year being non-binding and includes no cap on GM’s Annual Purchase Forecast | ||||||
| GM Offtake Agreements [Member] | DOE loan [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Closing date | Oct. 28, 2024 | ||||||
| Phase 1 [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Extended period, description | the forecast period for the first five years of phase one is extended from two years to three years, with the second and third years remaining non-binding; | ||||||
| Forecast in First Year [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Capped percentage | 100.00% | ||||||
| Forecast in Second Year [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Capped percentage | 50.00% | ||||||
| Previous GM Agreement and Tranche 2 Investment Agreement [Member] | Tranche 2 Investment [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Gain/Loss on change in fair value | $ 400 | ||||||
| Joint Venture with GM [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Formation description | On October 15, 2024, the Company and GM entered into an investment agreement (“GM Investment Agreement”) to establish a joint venture (the “JV”) for the purpose of funding, developing, constructing and operating Thacker Pass. The GM Investment Agreement replaced the previous Tranche 2 Investment Agreement with GM. The transaction closed and the JV was formed on December 20, 2024. | ||||||
| Formation date | Dec. 20, 2024 | ||||||
| Closing date | Dec. 20, 2024 | ||||||
| Ownership percentage | 62.00% | ||||||
| Cash and Restricted Cash | $ 412,600 | $ 452,300 | |||||
| Management services agreement and incentive compensation | $ 9,200 | ||||||
| Joint Venture with GM [Member] | DOE loan [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Proceeds from issuance of non-controlling interest | $ 138,300 | ||||||
| General Motors Holdings LLC [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 38.00% | 38.00% | |||||
| Commited contribution | $ 100,000 | ||||||
| General Motors Holdings LLC [Member] | DOE loan [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Proceeds from issuance of non-controlling interest | $ 330,000 | ||||||
| Amount of letter of credit facility | $ 195,000 | ||||||
| General Motors Holdings LLC [Member] | Phase 1 [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 20.00% | ||||||
| Lithium Nevada Venture LLC [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 38.00% | 62.00% | |||||
| Thacker Pass [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 100.00% | 100.00% | |||||
| Thacker Pass [Member] | Phase 1 [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 100.00% | ||||||
| Extended term | 20 years | ||||||
| Thacker Pass [Member] | Phase 2 [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 38.00% | ||||||
| General Motors Annual Purchase Forecast [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 20.00% | ||||||
| Phase 1 Under First Year [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 100.00% | ||||||
| Phase 1 Under Second Year [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 80.00% | ||||||
| Phase 1 Under Third Year [Member] | GM Offtake Agreements [Member] | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Ownership percentage | 60.00% | ||||||
Transactions With General Motors Holdings LLC - Schedule of Net Assets, Respective Interests and Non-controlling Interest (Details) - USD ($) $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 20, 2024 |
|||
| Schedule of Equity Method Investments [Line Items] | |||||
| Assets | $ 2,579,048 | $ 1,044,944 | |||
| Liabilities | (992,399) | (99,604) | |||
| GM's non-controlling interest | 527,895 | 310,336 | |||
| The Company's controlling interest | 1,058,754 | 635,004 | |||
| Non-controlling interest in Lithium Nevada Ventures | |||||
| Balance at beginning of period | 310,336 | ||||
| Capital contribution | 100,000 | ||||
| Non-controlling interests share of income (loss) | 35,825 | (105) | |||
| Balance at end of period | 527,895 | 310,336 | |||
| Lithium Nevada Ventures [Member] | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Assets | 2,059,293 | 888,486 | |||
| Liabilities | (670,097) | (71,813) | |||
| Net Assets | 1,389,196 | 816,673 | |||
| GM's non-controlling interest | 527,895 | 310,336 | |||
| The Company's controlling interest | 861,301 | 506,337 | |||
| Non-controlling interest in Lithium Nevada Ventures | |||||
| Balance at beginning of period | 310,336 | 0 | |||
| Minority interest initial recognition | 0 | $ 310,441 | |||
| Capital contribution | 70,930 | 0 | |||
| Non-controlling interests share of income (loss) | [1] | 35,825 | (105) | ||
| Balance at end of period | 527,895 | 310,336 | |||
| General Motors Holdings LLC [Member] | |||||
| Non-controlling interest in Lithium Nevada Ventures | |||||
| Capital contribution | $ 110,804 | $ 0 | |||
| |||||
Cash and Restricted Cash - Summary of Cash and Restricted Cash (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
||
|---|---|---|---|---|---|
| Cash and Cash Equivalents [Abstract] | |||||
| Cash | $ 568,226 | $ 593,885 | |||
| Restricted cash | 337,383 | 288 | |||
| Total | [1] | $ 905,609 | $ 594,173 | $ 195,804 | |
| |||||
Cash and Restricted Cash - Additional Information (Details) $ in Thousands, $ in Millions |
Dec. 31, 2025
USD ($)
|
Dec. 31, 2025
CAD ($)
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2024
CAD ($)
|
Dec. 31, 2023
USD ($)
|
||
|---|---|---|---|---|---|---|---|
| Cash and Cash Equivalents [Line Items] | |||||||
| Cash and restricted cash | [1] | $ 905,609 | $ 594,173 | $ 195,804 | |||
| Collateral Agent [Member] | Depositary Bank [Member] | |||||||
| Cash and Cash Equivalents [Line Items] | |||||||
| Deposit | 337,100 | 0 | |||||
| CAD [Member] | |||||||
| Cash and Cash Equivalents [Line Items] | |||||||
| Cash and restricted cash | $ 1.4 | $ 0.8 | |||||
| USD [Member] | |||||||
| Cash and Cash Equivalents [Line Items] | |||||||
| Cash and restricted cash | $ 904,200 | $ 593,400 | |||||
| |||||||
Receivables - Schedule Of Financing Receivables (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Receivables [Abstract] | ||
| Total | $ 4,110 | $ 557 |
Prepaids and Deposits - Schedule of Prepaids and Deposits (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Prepaids and Deposits [Abstract] | ||
| Total | $ 1,920 | $ 7,733 |
Investment Measured At Fair Value (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Schedule of Investments [Line Items] | ||
| Total | $ 4,863 | $ 4,152 |
| Investment in GT1 [Member] | ||
| Schedule of Investments [Line Items] | ||
| Total | 365 | 537 |
| Investment in Ascend Elements [Member] | ||
| Schedule of Investments [Line Items] | ||
| Total | $ 4,498 | $ 3,615 |
Investment Measured At Fair Value - Additional Information (Details) - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Schedule of Investments [Line Items] | ||
| Gain/Loss on change in fair value | $ 711 | $ (6,662) |
| Series C-1 member | ||
| Schedule of Investments [Line Items] | ||
| Company holds common shares | 806 | |
| Investment in GT1 [Member] | ||
| Schedule of Investments [Line Items] | ||
| Company holds common shares | 13,301 | |
| Ownership percentage | 2.00% | |
| Gain/Loss on change in fair value | $ (200) | (2,000) |
| Investment in Ascend Elements [Member] | ||
| Schedule of Investments [Line Items] | ||
| Gain/Loss on change in fair value | $ 900 | $ (5,000) |
Mineral Properties, Plant and Equipment, Net - Schedule of Mineral Properties, Plant and Equipment, Net (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
||
|---|---|---|---|---|
| Property, Plant and Equipment [Line Items] | ||||
| Total mineral properties, plant and equipment | $ 1,358,227 | $ 402,659 | ||
| Accumulated depreciation | (14,223) | (3,711) | ||
| Total mineral properties, plant and equipment, net | 1,344,004 | 398,948 | ||
| Thacker Pass - Construction in Progress [Member] | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Total mineral properties, plant and equipment | [1] | 1,235,620 | 378,957 | |
| Thacker Pass - Property, Plant and Equipment [Member] | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Total mineral properties, plant and equipment | 98,740 | 0 | ||
| Machinery and Equipment [Member] | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Total mineral properties, plant and equipment | 3,955 | 2,638 | ||
| Finance Lease Right-of-Use Assets [Member] | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Total mineral properties, plant and equipment | 19,912 | 19,948 | ||
| Other [Member] | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Total mineral properties, plant and equipment | $ 0 | $ 1,116 | ||
| ||||
Mineral Properties, Plant and Equipment, Net - Schedule of Mineral Properties, Plant and Equipment, Net (Parenthetical) (Details) - USD ($) $ in Thousands |
2 Months Ended | 9 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Property, Plant and Equipment [Line Items] | ||||
| Deposits on long-lead equipment | $ 0 | $ 0 | $ 0 | $ 24,394 |
| Deferred interest cost | 3,761 | 12,978 | ||
| Discount amortization | 3,403 | |||
| Thacker Pass [Member] | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Prepaid construction costs | 75,000 | 75,000 | 75,000 | |
| Deposits on long-lead equipment | $ 268,700 | $ 268,700 | 268,700 | |
| Deferred interest cost | 13,000 | |||
| Discount amortization | 9,100 | |||
| Deferred interest on DOE loan | 2,300 | |||
| Interest on other loans | $ 3,200 | $ 2,800 | ||
Mineral Properties, Plant and Equipment, Net - Additional Information (Details) - Thacker Pass [Member] - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Restricted Stock Units (RSUs) [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Stock-based compensation, capitalized | $ 1,600,000 | $ 2,400,000 |
| Performance Share Units (PSUs) [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Stock-based compensation, capitalized | $ 0 | $ 300,000 |
Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | ||
| Operating lease right-of-use assets | $ 6,734 | $ 3,458 |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Total | Total |
| Deposits on long-lead equipment | $ 0 | $ 24,394 |
| Total | $ 6,734 | $ 27,852 |
Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Accrued Liabilities, Current [Abstract] | ||
| Trade accruals | $ 72,843 | $ 43,621 |
| Employee-related benefits | 10,598 | 8,143 |
| Total | $ 83,441 | $ 51,764 |
Leases and Other Liabilities - Schedule Of Lease Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Lessee, Lease, Description [Line Items] | ||
| Finance Leases , Current | $ 4,758 | |
| Operating Leases, Current | 772 | |
| Current portion of lease liabilities | 5,530 | $ 5,816 |
| Finance Leases, Non-current | 9,471 | |
| Operating Leases, Non-current | 6,197 | |
| Non-current portion of lease liabilities | 15,668 | 16,821 |
| Vehicle and equipment leases [Member] | ||
| Lessee, Lease, Description [Line Items] | ||
| Finance Leases , Current | 4,758 | 4,782 |
| Finance Leases, Non-current | 9,471 | 14,230 |
| Office leases [Member] | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating Leases, Current | 699 | 963 |
| Operating Leases, Non-current | 4,371 | 787 |
| Land lease [Member] | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating Leases, Current | 73 | 71 |
| Operating Leases, Non-current | $ 1,826 | $ 1,804 |
Leases and Other Liabilities - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Lessee, Lease, Description [Line Items] | ||
| Success fee to mining contractor | $ 4.7 | |
| Repayment amount upon failing to achieve milestone | $ 3.5 | |
| Office Space, Vehicles and Equipment [Member] | Minimum [Member] | ||
| Lessee, Lease, Description [Line Items] | ||
| Leases term of contract | 1 year | |
| Remaining lease terms | 4 months 24 days | |
| Office Space, Vehicles and Equipment [Member] | Maximum [Member] | ||
| Lessee, Lease, Description [Line Items] | ||
| Leases term of contract | 10 years | |
| Remaining lease terms | 10 years | |
| Thacker Pass [Member] | ||
| Lessee, Lease, Description [Line Items] | ||
| Mining contractor advance liability | $ 3.5 |
Leases and Other Liabilities - Schedule of Future Minimum Lease Payments Under Noncancellable Finance and Operating Leases (Details) $ in Thousands |
Dec. 31, 2025
USD ($)
|
|---|---|
| Operating Leases | |
| 2026 | $ 1,011 |
| 2027 | 666 |
| 2028 | 672 |
| 2029 | 620 |
| 2030 | 639 |
| Thereafter | 7,838 |
| Total minimum lease payments | 11,446 |
| Less: amounts representing interest | (4,477) |
| Present value of net minimum lease payments | $ 6,969 |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Operating And Finance Lease Liability Current |
| Less: current portion of lease liabilities | $ (772) |
| Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Operating And Finance Lease Liability Noncurrent |
| Non-current lease liabilities | $ 6,197 |
| Finance Leases | |
| 2026 | 5,721 |
| 2027 | 5,320 |
| 2028 | 4,941 |
| 2029 | 0 |
| 2030 | 0 |
| Thereafter | 0 |
| Total minimum lease payments | 15,982 |
| Less: amounts representing interest | (1,753) |
| Present value of net minimum lease payments | $ 14,229 |
| Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Operating And Finance Lease Liability Current |
| Less: current portion of lease liabilities | $ (4,758) |
| Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Operating And Finance Lease Liability Noncurrent |
| Non-current lease liabilities | $ 9,471 |
Leases and Other Liabilities - Summary of Contractual Maturities of the Company's Financial Liabilities on an Undiscounted Basis (Details) $ in Millions |
Apr. 01, 2025
USD ($)
|
|---|---|
| Lessee, Lease, Description [Line Items] | |
| Total | $ 191.6 |
Convertible Debt, Royalty and Production Payment Arrangements - Additional Information (Details) $ / shares in Units, shares in Thousands, $ in Thousands |
9 Months Ended | 12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
Oct. 28, 2025
USD ($)
shares
|
Oct. 10, 2025
USD ($)
shares
|
Apr. 01, 2025
USD ($)
PerTonne
Tonnes
|
Dec. 31, 2025
USD ($)
$ / shares
shares
|
Dec. 31, 2025
USD ($)
$ / shares
shares
|
Dec. 31, 2024
USD ($)
shares
|
Oct. 29, 2025
shares
|
Oct. 15, 2025
shares
|
Mar. 31, 2025
USD ($)
|
|
| Gain Contingencies [Line Items] | |||||||||
| Transaction cost | $ 32,307 | $ 22,214 | |||||||
| Common stock, shares issued | shares | 314,335 | 314,335 | 218,465 | ||||||
| Fair value loss recognized on the embedded derivative | $ (166,743) | ||||||||
| Loss on Convertible Debt | $ (171,000) | ||||||||
| Obligated to gross revenue royalty | 20.00% | 20.00% | |||||||
| Orion Resource Partners LP (Orion) [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Investments | $ 217,100 | ||||||||
| Aggregate principal amount | 195,000 | ||||||||
| Amount of initial investment | 220,000 | ||||||||
| Issuance discount | 2,900 | ||||||||
| Option conversion value | $ 32,500 | $ 65,000 | |||||||
| Conversion of stock, shares converted | shares | 8,600 | 17,200 | |||||||
| Common stock, shares issued | shares | 8,600 | 17,200 | |||||||
| Fair value loss recognized on the embedded derivative | $ (166,700) | ||||||||
| Loss on extinguishment of debt | (4,300) | ||||||||
| Embedded Derivative [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Proceeds of transaction costs | 4,400 | ||||||||
| Delayed Draw Notes [Member] | Orion Resource Partners LP (Orion) [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Additional commitment amount | $ 30,000 | ||||||||
| Long-Term debt, term | 2 years | ||||||||
| Convertible Debt [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Aggregate principal amount | $ 110,478 | $ 110,478 | $ 195,000 | ||||||
| Initial conversion price | $ / shares | $ 3.78 | $ 3.78 | |||||||
| Interest rate on convertible debt | 9.875% | 9.875% | |||||||
| Maturity date | Apr. 01, 2030 | ||||||||
| Proceeds of transaction costs | $ 4,300 | ||||||||
| Effective interest | 26.10% | 26.10% | |||||||
| Fair value loss recognized on the embedded derivative | $ (166,743) | ||||||||
| Convertible Debt [Member] | Orion Resource Partners LP (Orion) [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Transaction cost | $ 9,700 | ||||||||
| PPA [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Proceeds of transaction costs | $ 1,000 | ||||||||
| Effective interest | 26.80% | 26.80% | |||||||
| Fixed payments received | PerTonne | 0.128 | ||||||||
| Percentage of additional variable payments recieved on total gross revenue | 0.96% | ||||||||
| Fixed and variable payments recieved | Tonnes | 41,500 | ||||||||
| PPA [Member] | Delayed Draw Notes [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Fixed payments received | PerTonne | 0.152 | ||||||||
| Percentage of additional variable payments recieved on total gross revenue | 1.14% | ||||||||
| Phase 1 of Thacker Pass [Member] | Orion Resource Partners LP (Orion) [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Investments | $ 250,000 | ||||||||
| Thacker Pass [Member] | Orion Resource Partners LP (Orion) [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Amount paid for exchange | $ 25,000 | ||||||||
| Thacker Pass [Member] | |||||||||
| Gain Contingencies [Line Items] | |||||||||
| Obligated to gross revenue royalty | 8.00% | 8.00% | |||||||
| Mineral claims | $ 22,000 | ||||||||
| Rate of royalty | 4.00% | ||||||||
| Option at any time to reduce rate of royalty | 1.75% | ||||||||
Convertible Debt, Royalty and Production Payment Arrangements - Schedule of Proceeds of Investment (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Apr. 01, 2025 |
Mar. 31, 2025 |
|---|---|---|---|
| Gain Contingencies [Line Items] | |||
| Total proceeds allocated to the Convertible Debt | $ 160,017 | $ 187,801 | |
| PPA [Member] | |||
| Gain Contingencies [Line Items] | |||
| Less: deferred transactions costs | $ (1,047) | ||
| Production Payment Agreement | 25,000 | ||
| Total proceeds allocated to the Production Payment Agreement | 23,953 | ||
| Convertible Debt [Member] | |||
| Gain Contingencies [Line Items] | |||
| Convertible Debt | 94,875 | ||
| Embedded Derivative - conversion feature | $ 102,368 | 97,200 | $ 97,200 |
| Less: deferred transactions costs | (4,274) | ||
| Total proceeds allocated to the Convertible Debt | $ 187,801 |
Convertible Debt, Royalty and Production Payment Arrangements - Schedule of Reconciliation Includes Initial Recognition of the Components of Investment (Details) - USD ($) $ in Thousands |
2 Months Ended | 9 Months Ended |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Gain Contingencies [Line Items] | ||
| Total Convertible Debt, Balance, December 31, 2025 | $ 187,801 | |
| Deferred interest cost | $ 3,761 | 12,978 |
| Unamortized Discount, Discount amortization | 3,403 | |
| Embedded Derivative, Loss on embedded derivative | 166,743 | |
| Total Convertible Debt, Derecognition on conversion to common shares | (210,908) | |
| Total Convertible Debt, Balance, December 31, 2025 | 160,017 | 160,017 |
| PPA [Member] | ||
| Gain Contingencies [Line Items] | ||
| Recognition principal amount on April 1, 2025 | 23,953 | |
| Unamortized Discount, Discount amortization | 5,731 | |
| Recognition Principal Amount, December 31, 2025 | 29,684 | 29,684 |
| Convertible Debt [Member] | ||
| Gain Contingencies [Line Items] | ||
| Recognition principal amount on April 1, 2025 | 195,000 | |
| Unamortized Discount, Initial recognition on April 1, 2025 | (104,399) | |
| Embedded Derivative, Initial recognition on April 1, 2025 | 97,200 | |
| Deferred interest cost | 12,978 | |
| Unamortized Discount, Discount amortization | 3,403 | |
| Embedded Derivative, Loss on embedded derivative | 166,743 | |
| Recognition Principal Amount, Derecognition on conversion to common shares | (97,500) | |
| Unamortized Discount, Derecognition on conversion to common shares | 48,167 | |
| Embedded Derivative of Derecognition on Conversion to Common Shares | (161,575) | |
| Recognition Principal Amount, December 31, 2025 | 110,478 | 110,478 |
| Unamortized Discount, Initial recognition on December 31, 2025 | (52,829) | (52,829) |
| Embeded Derivative, Balance, December 31, 2025 | $ 102,368 | $ 102,368 |
Convertible Debt, Royalty and Production Payment Arrangements - Summary of royalty subject to repurchase recorded as a financial liability (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Production Payment Agreement | $ 29,684 | $ 0 |
| Royalty | 21,160 | 20,715 |
| Total | $ 50,844 | $ 20,715 |
Stockholders' Equity - Additional Information (Details) - USD ($) |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Nov. 13, 2025 |
Oct. 08, 2025 |
May 15, 2025 |
Apr. 22, 2024 |
Oct. 03, 2023 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Jun. 11, 2025 |
|
| Share Repurchase Program [Line Items] | ||||||||
| Common stock, shares issued | 314,335,000 | 218,465,000 | ||||||
| Common stock, shares outstanding | 314,335,000 | 218,465,000 | ||||||
| Common stock, par value | $ 0 | $ 0 | ||||||
| Preferred stock, shares issued | 0 | 0 | ||||||
| Stock-based compensation expense | $ 6,206,000 | $ 5,166,000 | ||||||
| Allocation of stock-based compensation expense | 6,206,000 | 5,166,000 | ||||||
| General and Administrative Expense [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Allocation of stock-based compensation expense | 6,206,000 | $ 5,166,000 | ||||||
| ATM Program [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Common stock, par value | $ 0 | $ 0 | $ 0 | |||||
| Net proceeds | $ 57,000,000 | $ 246,400,000 | $ 97,800,000 | |||||
| Common Stock [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Sold common shares pursuant to the ATM Program | 55,000,000 | |||||||
| Common Stock [Member] | ATM Program [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Maximum aggregate offering price | $ 250,000,000 | $ 250,000,000 | $ 100,000,000 | |||||
| Sold common shares pursuant to the ATM Program | 10,800,000 | 30,500,000 | 26,900,000 | |||||
| Average price per share | $ 5.37 | $ 8.19 | $ 3.71 | |||||
| Equity Incentive Plan [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Aggregate percentage of issued and outstanding common stock | 8.90% | |||||||
| Amended and Restated Equity Incentive Plan [Member] | Maximum [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Increased the maximum number of available common shares for issuance | 14,000,000 | |||||||
| Restricted Stock Units (RSUs) [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Allocation of stock-based compensation expense | $ 3,176,000 | $ 3,048,000 | ||||||
| Estimated fair value of share units granted | $ 10,200,000 | $ 9,300,000 | ||||||
| Grant date fair value | $ 2.58 | $ 4.82 | ||||||
| Unrecognized stock-based compensation expense | $ 4,600,000 | $ 4,200,000 | ||||||
| Total unrecognized stock based compensation expense relating to unvested RSUs | 3 years | |||||||
| RSUs were issued for settlement | 3,970,000 | 1,936,000 | ||||||
| Restricted Stock Units (RSUs) [Member] | Thacker Pass [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Stock-based compensation, capitalized | $ 1,600,000 | $ 2,400,000 | ||||||
| Restricted Stock Units (RSUs) [Member] | 2024 Annual Bonuses [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| RSUs were issued for settlement | 1,400,000 | |||||||
| RSUs were issued for settlement accrued | 3,500,000 | |||||||
| Performance Share Units (PSUs) [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Allocation of stock-based compensation expense | $ 2,305,000 | 1,505,000 | ||||||
| Estimated fair value of share units granted | $ 3,000,000 | $ 2,800,000 | ||||||
| Weighted average fair value | $ 3.94 | $ 6.32 | ||||||
| Unrecognized stock-based compensation expense | $ 3,100,000 | $ 2,400,000 | ||||||
| RSUs were issued for settlement | 762,000 | 442,000 | ||||||
| Vesting period, years | 3 years | |||||||
| Performance Share Units (PSUs) [Member] | Thacker Pass [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Stock-based compensation, capitalized | $ 0 | $ 300,000 | ||||||
| Deferred Shares Units (DSU) [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Allocation of stock-based compensation expense | 725,000 | 613,000 | ||||||
| Stock-based compensation, capitalized | $ 700,000 | $ 600,000 | ||||||
| Share Capital [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Common stock, shares issued | 314,300,000 | 218,500,000 | ||||||
| Common stock, shares outstanding | 314,300,000 | 218,500,000 | ||||||
| Equity Financing [Member] | ||||||||
| Share Repurchase Program [Line Items] | ||||||||
| Number of common stock for public offering | 55,000,000 | |||||||
| Price per share | $ 5 | |||||||
| Net proceeds | $ 275,000,000 | |||||||
| Net Proceeds from offering | $ 262,100,000 | |||||||
Stockholders' Equity - Summary of Recognition of Stock-Based Compensation (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Allocation of stock-based compensation expense | $ 6,206 | $ 5,166 |
| Restricted Stock Units (RSUs) [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Allocation of stock-based compensation expense | 3,176 | 3,048 |
| Deferred Shares Units (DSU) [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Allocation of stock-based compensation expense | 725 | 613 |
| Performance Share Units (PSUs) [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Allocation of stock-based compensation expense | $ 2,305 | $ 1,505 |
Stockholders' Equity - Summary of Changes to the Number of Outstanding Restricted Share Units (RSUs) (Details) - Restricted Stock Units (RSUs) [Member] - shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |||
| RSUs issued on Separation | 1,650 | ||
| Outstanding - December 31, 2024 | 2,078 | ||
| Vested and converted into common shares | (1,773) | (1,310) | |
| Granted | 3,970 | 1,936 | |
| Cancelled | (437) | (198) | |
| Outstanding - December 31, 2025 | 3,838 | 2,078 | |
Stockholders' Equity - Summary of Changes to the Number of Outstanding Deferred Share Units (DSUs) (Details) - Deferred Share Units (DSUs) [Member] - shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |||
| DSUs issued on Separation | 95 | ||
| Outstanding - December 31, 2024 | 252 | ||
| Granted | 210 | 157 | |
| Outstanding - December 31, 2025 | 462 | 252 | |
Stockholders' Equity - Summary of Changes to the Number of Outstanding Performance Share Units (PSUs) (Details) - Performance Share Units (PSUs) [Member] - shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |||
| PSUs issued on Separation | 628 | ||
| Outstanding - December 31, 2024 | 577 | ||
| Converted into common shares | (66) | (377) | |
| Granted | 762 | 442 | |
| Cancelled | (116) | ||
| Outstanding - December 31, 2025 | 1,273 | 577 | |
Management Compensation - Summary of Compensation (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Management and Incentive Fees Expense [Abstract] | ||
| Salaries, bonuses, benefits and directors' fees included in the Consolidated Statements of Loss | $ 4,135 | $ 3,903 |
| Equity compensation | 2,870 | 3,182 |
| Total | $ 7,005 | $ 7,085 |
General and Administrative Expenses - Summary of General and Administrative Expenses (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|||
| Condensed Income Statements, Captions [Line Items] | ||||
| Stock-based compensation | $ 6,206 | $ 5,166 | ||
| Total | 52,822 | 28,096 | ||
| General and Administrative Expense [Member] | ||||
| Condensed Income Statements, Captions [Line Items] | ||||
| Salaries, benefits and directors' fees | 15,746 | 12,564 | ||
| Stock-based compensation | 6,206 | 5,166 | ||
| Professional fees | 6,125 | 3,239 | ||
| Office and administration | 7,147 | 4,558 | ||
| Other | [1] | $ 17,598 | $ 2,569 | |
| ||||
General and Administrative Expenses - Summary of General and Administrative Expenses (Parenthetical) (Details) - General and Administrative Expense [Member] - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|||
| Condensed Income Statements, Captions [Line Items] | ||||
| Other | [1] | $ 17,598 | $ 2,569 | |
| Construction [Member] | ||||
| Condensed Income Statements, Captions [Line Items] | ||||
| Other | $ 14,100 | |||
| ||||
Exploration Expenditures - Schedule of Exploration Expenditures (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Extractive Industries [Abstract] | ||
| Total | $ 19 | $ 202 |
Transaction Costs - Schedule of Investment Transaction Costs (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Investments [Abstract] | ||
| DOE Loan | $ 14,175 | $ 6,487 |
| GM's non-controlling interest related to the JV | 8,958 | 14,046 |
| Convertible debt Embedded Derivative | 4,379 | 0 |
| Other financing activities | 4,795 | 1,681 |
| Total | $ 32,307 | $ 22,214 |
Segmented Information - Additional Information (Details) |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2025
Area
Segment
|
Dec. 31, 2024 |
|
| Segment Reporting [Abstract] | ||
| Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | srt:ChiefExecutiveOfficerMember | srt:ChiefExecutiveOfficerMember |
| Number of operating segments | 1 | |
| Number of reporting segments | 1 | |
| Number of geographical area | Area | 1 | |
Income Taxes - Schedule of Components of Income/(Loss) Before Income Tax (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Income Tax Disclosure [Abstract] | ||
| Canada | $ (179,182) | $ (35,069) |
| United States | 92,920 | (7,564) |
| Income/ (loss) from continuing operations before taxes | $ (86,262) | $ (42,633) |
Income Taxes - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Effective Income Tax Rate Reconciliation [Line Items] | ||
| Federal tax rate | 15.00% | 15.00% |
| Non-capital loss carryforwards | $ 64,960 | $ 58,371 |
| Canada | ||
| Effective Income Tax Rate Reconciliation [Line Items] | ||
| Non-capital loss carryforwards | $ 16,200 | 15,900 |
| Non - capital loss carryforwards expiration date | Dec. 31, 2044 | |
| US | ||
| Effective Income Tax Rate Reconciliation [Line Items] | ||
| Non-capital loss carryforwards | $ 288,500 | $ 257,600 |
| Non-capital loss carryforwards subject to expiration | $ 38,800 | |
| Non - capital loss carryforwards expiration start date | Jan. 01, 2029 | |
| Non - capital loss carryforwards expiration date | Dec. 31, 2037 | |
Income Taxes - Schedule of Reconciliation of Income Taxes (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Income Tax Paid, by Individual Jurisdiction [Line Items] | ||
| Loss from continuing operations before taxes | $ (86,262,000) | $ (42,633,000) |
| Statutory tax rate | $ (12,938,000) | $ (6,395,000) |
| Statutory tax rate, Percent | 15.00% | 15.00% |
| Reconciling items: | ||
| Stock-based compensation | $ 916,000 | $ 774,000 |
| Stock-based compensation, Percent | (1.10%) | (1.80%) |
| Revaluation of warrant obligations | $ (6,251,000) | $ (32,000) |
| Revaluation of warrant obligations, Percent | 7.20% | 0.10% |
| Revaluation of convertible debt and conversion feature | $ 25,656,000 | $ 0 |
| Revaluation of convertible debt and conversion feature, Percent | (29.70%) | 0.00% |
| Share issuance costs | $ (1,017,000) | $ (1,928,000) |
| Share issuance costs, Percent | 1.20% | 4.50% |
| Others | $ 393,000 | $ 1,051,000 |
| Others, Percent | (0.40%) | (2.50%) |
| Changes in valuation allowance | $ 5,491,000 | $ 5,396,000 |
| Changes in valuation allowance, Percent | (6.30%) | (12.70%) |
| Total income tax (benefit) expense | $ 0 | $ 0 |
| Total income tax (benefit) expense, Percent, Total | 0.00% | 0.00% |
| U.S. and Canada | ||
| Reconciling items: | ||
| Foreign tax effects | $ 2,750,000 | $ (454,000) |
| Foreign tax effects, Percent | (3.20%) | 1.10% |
| United States | ||
| Reconciling items: | ||
| Stock-based compensation | $ 0 | $ (6,521,000) |
| Stock-based compensation, Percent | 0.00% | 15.30% |
| Others | $ 313,000 | $ (340,000) |
| Others, Percent | (0.40%) | 0.80% |
| Changes in valuation allowance | $ (32,486,000) | $ 6,398,000 |
| Changes in valuation allowance, Percent | 37.60% | (15.00%) |
| Nondeductible interest | $ 0 | $ 2,080,000 |
| Nondeductible interest, Percent | 0.00% | (4.90%) |
| Gain on transfer of employee contracts | $ 0 | $ 440,000 |
| Gain on transfer of employee contracts, Percent | 0.00% | (1.00%) |
| Nontaxable and nondeductible items, Other | $ (158,000) | $ 192,000 |
| Deferred tax related to issuance of warrants | $ 19,353,000 | $ 0 |
| Nontaxable and nondeductible items, Others, Percent | 0.20% | (0.50%) |
| Adjustment of book-tax difference on capital assets | $ 3,352 | $ (661) |
| Adjustment of book-tax difference on capital assets, percent | (3.90%) | 1.60% |
| Deferred tax related to issuance of warrants, Percent | (22.40%) | 0.00% |
| Non-controlling interest's income | $ (5,374,000) | $ 0 |
| Non-controlling interest's income, Percent | 6.20% | 0.00% |
Income Taxes - Schedule of Significant Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Deferred income tax assets: | ||
| Non-capital loss carryforwards | $ 64,960 | $ 58,371 |
| Share issuance costs | 6,723 | 3,139 |
| Exploration assets | 7 | 7 |
| Property, plant and equipment | 9,082 | 3,703 |
| Investment measured at fair value | 495 | 592 |
| Production payment arrangements | 8,015 | 0 |
| Stock based compensation | 112 | 112 |
| Other items | (285) | 449 |
| Gross deferred income tax assets | 89,109 | 66,373 |
| Less: valuation allowance | (44,779) | (63,617) |
| Total deferred income tax assets | 44,330 | 2,756 |
| Deferred income tax liabilities: | ||
| Investment in Lithium Nevada Ventures | (44,330) | (2,756) |
| Total deferred income tax liabilities | (44,330) | (2,756) |
| Deferred income tax assets, net | $ 0 | $ 0 |
Supplemental Disclosure With Respect to Cash Flows - Schedule of Other Cash Information (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Supplemental Cash Flow Information [Abstract] | ||
| Interest received on cash deposits | $ 8,280 | $ 15,918 |
| Interest paid | (1,346) | (268) |
| Non-cash investing and financing activities | ||
| Total non-cash additions to mineral properties, plant and equipment composed of: | 190,524 | 22,208 |
| Right-of-use assets obtained in exchange for new finance lease liabilities | 0 | 19,731 |
| Capitalization of stock-based compensation | 1,570 | 4,255 |
| Capitalization of depreciation | 10,655 | 1,432 |
| Capitalization of interest on the Orion Investment | 22,112 | 0 |
| Capitalization of interest on the DOE Loan | 4,349 | 0 |
| Capitalization of non-cash interest | 445 | (32) |
| Deposits on long-lead equipment and other long-term prepaids | 24,394 | 0 |
| Increase in reclamation liabilities | 185 | 0 |
| Other non-cash transactions including working capital changes | 126,814 | (3,178) |
| Right-of-use assets obtained in exchange for new operating lease liabilities | $ 4,276 | $ 719 |
Fair Values of Financial Instruments - Schedule of the Company's Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Financial assets | ||||||||||||
| Financial assets | $ 4,863 | $ 4,152 | ||||||||||
| Financial liabilities | ||||||||||||
| Financial liabilities | 336,459 | 0 | ||||||||||
| Level 1 [Member] | Investment in GT1 [Member] | ||||||||||||
| Financial assets | ||||||||||||
| Financial assets | [1] | 365 | 537 | |||||||||
| Level 3 [Member] | LAC Warrants [Member] | ||||||||||||
| Financial liabilities | ||||||||||||
| Financial liabilities | [2] | 83,796 | 0 | |||||||||
| Level 3 [Member] | JV Warrants [Member] | ||||||||||||
| Financial liabilities | ||||||||||||
| Financial liabilities | [3] | 150,295 | 0 | |||||||||
| Level 3 [Member] | Embedded Derivative [Member] | ||||||||||||
| Financial liabilities | ||||||||||||
| Financial liabilities | [4] | 102,368 | 0 | |||||||||
| Level 3 [Member] | Investment in Ascend Elements [Member] | ||||||||||||
| Financial assets | ||||||||||||
| Financial assets | [5] | $ 4,498 | $ 3,615 | |||||||||
| ||||||||||||
Fair Values of Financial Instruments - Schedule of the Company's Assets and Liabilities Measured at Fair Value on a Recurring Basis (Parenthetical) (Details) - USD ($) |
9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Apr. 01, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Oct. 07, 2025 |
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||
| Gain/Loss on change in fair value | $ 711,000 | $ (6,662,000) | |||
| Fair value loss recognized on the embedded derivative | $ (166,743,000) | ||||
| LAC Warrants [Member] | |||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||
| Gain/Loss on change in fair value | $ 59,600,000 | ||||
| Share price | $ 4.36 | $ 4.36 | $ 8.27 | ||
| Warrants exercise price | $ 0.01 | $ 0.01 | |||
| JV Warrants [Member] | |||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||
| Gain/Loss on change in fair value | $ 100,400,000 | ||||
| Assumed exchange ratio | 7.82% | 7.82% | 7.82% | ||
| Embedded Derivative [Member] | |||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||
| Expected volatility | 35.20% | 47.00% | |||
| Share price | $ 2.76 | $ 4.36 | $ 4.36 | ||
| Risk-free rate | 3.90% | 3.66% | |||
| Fair value loss recognized on the embedded derivative | $ (166,700,000) | ||||
| Expected dividends | $ 0 | ||||
| Investment in Ascend Elements [Member] | |||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||
| Gain/Loss on change in fair value | 900,000 | (5,000,000) | |||
| Investment in GT1 [Member] | |||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||
| Gain/Loss on change in fair value | $ (200,000) | $ (2,000,000) | |||
Fair Values of Financial Instruments - Summary of Carrying Amount and Fair Values (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||
| Royalty obligation | [1] | $ 21,160 | $ 20,715 | |||||||
| Production payment obligation, Carrying Value | [2] | 29,684 | 0 | |||||||
| Convertible Debt host , Carrying Value | [3] | 57,649 | 0 | |||||||
| DOE Loan, Carrying Value | [4] | 350,987 | 0 | |||||||
| Total, Carrying Value | 459,480 | 20,715 | ||||||||
| Royalty obligation | [1] | 13,699 | 15,563 | |||||||
| Production payment obligation, Fair Value | [2] | 32,717 | 0 | |||||||
| Convertible Debt, Fair Value | [3] | 62,367 | 0 | |||||||
| DOE Loan, Fair Value | [4] | 301,630 | 0 | |||||||
| Total, Fair Value | $ 410,413 | $ 15,563 | ||||||||
| ||||||||||
Fair Values of Financial Instruments - Summary of Carrying Amount and Fair Values (Parenthetical) (Details) |
Dec. 31, 2025
USD ($)
Tonnes
|
Dec. 31, 2024 |
|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Discounted cash flow with a weighted average discount rate | 26.80% | |
| Discount rate | 26.10% | |
| Average production per year | Tonnes | 41,500 | |
| Average price | $ | 15,082 | |
| Fair Value, Inputs, Level 3 [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Discounted cash flow with a weighted average discount rate | 26.10% | 12.30% |
| Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Discounted cash flow with a weighted average discount rate | 8.00% |
Commitments - Additional Information (Details) - USD ($) |
Oct. 28, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Aug. 05, 2024 |
|---|---|---|---|---|
| Gain Contingencies [Line Items] | ||||
| Lease Payments | $ 15,982,000 | |||
| Long-lead Equipment [Member] | ||||
| Gain Contingencies [Line Items] | ||||
| Purchase obligation | $ 0 | |||
| Infrastructure [Member] | ||||
| Gain Contingencies [Line Items] | ||||
| Purchase obligation | 0 | |||
| Service Contracts [Member] | ||||
| Gain Contingencies [Line Items] | ||||
| Purchase obligation | 0 | |||
| Transload Terminal Services Agreement [Member] | ||||
| Gain Contingencies [Line Items] | ||||
| Transload Terminal Services Agreement | LN is party to a Transload Terminal Services Agreement (the “Terminal Agreement”) executed on October 28, 2024, to finance the construction of a railcar and truck terminal (the “Terminal”) in Winnemucca, Nevada. The initial term of the Terminal Agreement is 10 years with two automatic extensions of 5 years each. A third-party developer has agreed to fund approximately $95.0 million to finance the construction of the Terminal through a finance lease to the Company. Under the terms of the lease, the Company expects lease payments to be approximately $20.5 million per year for each of the first 10 years and $6.7 million per year for each of the second 10 years, with an early buyout option to purchase the Terminal. The total amount funded by the third-party developer and the amount of the future lease payments will be determined upon commencement of the lease at a future date. The arrangement is a build-to-suit arrangement and the Company has been involved in the design and construction of the Terminal prior to the anticipated lease commencement. Accordingly, the Company has determined it controls the Terminal during the construction period and will record construction costs incurred during the construction period as a construction-in-process asset and a related financing obligation on the Company’s Consolidated Balance Sheets. The Company’s interest in the Terminal Agreement serves as collateral under the DOE Loan | |||
| Expiration Period | 10 years | |||
| Fund | $ 95,000,000 | |||
| Grant receivable from U.S. Department of Defense | 2,400,000 | 0 | $ 11,800,000 | |
| Grant received | $ 1,100,000 | $ 0 | ||
| Transload Terminal Services Agreement [Member] | First 10 Years [Member] | ||||
| Gain Contingencies [Line Items] | ||||
| Lease Payments | $ 20,500,000 | |||
| Lease Term | 10 years | |||
| Transload Terminal Services Agreement [Member] | Second 10 years [Member] | ||||
| Gain Contingencies [Line Items] | ||||
| Lease Payments | $ 6,700,000 | |||
| Remaining Lease Term | 10 years |
Commitments - Schedule of Fixed and Determinable Portion of Commitments, Excluding Lease Components with Maturity (Details) $ in Thousands |
Dec. 31, 2025
USD ($)
|
|---|---|
| Long-Term Purchase Commitment [Line Items] | |
| 2026 | $ 75,858 |
| 2027 | 41,441 |
| 2028 | 24,426 |
| 2029 | 23,257 |
| 2030 | 23,264 |
| Thereafter | 212,597 |
| Long-Lead Equipment [Member] | |
| Long-Term Purchase Commitment [Line Items] | |
| 2026 | 17,346 |
| 2027 | 427 |
| 2028 | 2,562 |
| 2029 | 2,562 |
| 2030 | 2,562 |
| Thereafter | 4,698 |
| Infrastructure [Member] | |
| Long-Term Purchase Commitment [Line Items] | |
| 2026 | 0 |
| 2027 | 3,413 |
| 2028 | 20,477 |
| 2029 | 20,477 |
| 2030 | 20,477 |
| Thereafter | 206,539 |
| Service Contracts [Member] | |
| Long-Term Purchase Commitment [Line Items] | |
| 2026 | 58,445 |
| 2027 | 32,245 |
| 2028 | 0 |
| 2029 | 0 |
| 2030 | 0 |
| Thereafter | 0 |
| Other Commitments [Member] | |
| Long-Term Purchase Commitment [Line Items] | |
| 2026 | 67 |
| 2027 | 5,356 |
| 2028 | 1,387 |
| 2029 | 218 |
| 2030 | 225 |
| Thereafter | $ 1,360 |
Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Jan. 30, 2026 |
Jan. 26, 2026 |
Nov. 13, 2025 |
Oct. 08, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Feb. 24, 2026 |
|
| ATM Program [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Net proceeds | $ 57.0 | $ 246.4 | $ 97.8 | ||||
| Common Stock [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Sold common shares pursuant to the ATM Program | 55,000,000 | ||||||
| Common Stock [Member] | ATM Program [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Sold common shares pursuant to the ATM Program | 10,800,000 | 30,500,000 | 26,900,000 | ||||
| Average price per share | $ 5.37 | $ 8.19 | $ 3.71 | ||||
| Subsequents Events [Member] | DOE [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Ownership percentage | 5.00% | ||||||
| Subsequents Events [Member] | DOE loan [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Warrants exercise price | $ 30 | ||||||
| Second drawdown DOE loan | $ 432.0 | ||||||
| Subsequents Events [Member] | ATM Program [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Net proceeds | $ 189.7 | ||||||
| Subsequents Events [Member] | Common Stock [Member] | ATM Program [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Sold common shares pursuant to the ATM Program | 32,500,000 | ||||||
| Average price per share | $ 5.92 | ||||||
| Subsequents Events [Member] | LAC Warrant [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Sold common shares pursuant to the ATM Program | 18,268,687,000,000 | ||||||
| Warrants exercise price | $ 0.01 | ||||||
| Subsequents Events [Member] | LAC Warrant [Member] | DOE loan [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Warrants exercise price | $ 0.01 | ||||||
| Percentage of non-voting non-transferable equity interest | 5.00% | ||||||
| Subsequents Events [Member] | JV Warrant [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Sold common shares pursuant to the ATM Program | 8,656,509,695 | ||||||
| Warrants exercise price | $ 0.0001 | ||||||
| Percentage of non-voting non-transferable equity interest | 5.00% | ||||||
| Subsequents Events [Member] | JV Warrant [Member] | DOE [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Ownership percentage | 5.00% | ||||||
| Subsequents Events [Member] | JV Warrant [Member] | DOE loan [Member] | |||||||
| Subsequent Event [Line Items] | |||||||
| Warrants exercise price | $ 0.0001 | ||||||
| Percentage of non-voting non-transferable equity interest | 5.00% | ||||||