X-Energy, Inc.
For the period ended Jun 30, 2026. Filed Aug 13, 2026.
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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.
Jun 30, 2026 · Filed Aug 13, 2026
What changed in Risk Factors?
Read the current filingPrevious report: 10-Q
Period ended 2026-03-31; filed 2026-06-04.
0001193125-26-256376
Item 1A. Risk FactorsUnregistered Sales of Equity Securities and Use of ProceedsDefaults Upon Senior SecuritiesMine Safety DisclosuresOther InformationCurrent report: 10-Q
Period ended 2026-06-30; filed 2026-08-13.
0001193125-26-347752
Item 1A. Risk FactorsUnregistered Sales of Equity Securities and Use of ProceedsDefaults Upon Senior SecuritiesMine Safety DisclosuresOther InformationThe baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.
Compared 448 previous paragraphs and 461 current paragraphs.
327 unchanged; 105 reworded; 25 added; 10 removed; 6 previous and 4 current paragraphs rearranged.
Tables are not compared: 0 previous and 0 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.
A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.
Added paragraphs (25)
Current report
upgrading the existing operational management and financial reporting systems and team, including to comply with requirements as a public company; and
Current report
For example, our business plans depend on sustained and increasing power demand from industrial users and the data center industry. Energy demand from the data center and industrial sectors may decline if regulatory hurdles, community opposition, or infrastructure delays prevent them from building new facilities. Legislative changes, environmental standards, zoning restrictions, or shifts in public perception could further reduce demand and weaken the competitiveness of nuclear energy. For example, New York recently moved to temporarily bar construction of certain large-scale data centers for up to a year and other states could impose similar limitations. Any significant reduction in industrial or data center development would negatively impact our economics and ability to attract new customers and could disrupt existing projects.
Current report
Any failure to meet our timelines to bring our nuclear fuel to market at scale, scale production efficiently or control manufacturing costs for our nuclear fuel could have a material adverse effect on our financial condition and on our ability to manufacture and market our nuclear fuel.
Current report
We have substantially completed the development of our TRISO-X fuel and irradiation testing is ongoing at the Idaho National Lab test facility. TRISO-X fuel is produced through a highly specialized batch manufacturing process. Scaling from pilot-scale production to commercial-scale production involves significant technical, production, and economic challenges. We have limited experience constructing and operating a facility of this scale and complexity, and our nuclear fuel has not previously been manufactured at commercial volumes. We may encounter unanticipated construction and scale-up challenges and delays. For example, we may experience delays due to supply chain disruptions, contractor performance issues, labor shortages, equipment procurement delays, regulatory issues, testing and quality results, adverse weather conditions or other factors. In addition, we do not yet know the actual scale-up efficiencies, throughput rates, or resulting costs we will achieve in commercial operations. If we do not meet sufficient manufacturing efficiency and factory throughput, our production costs could be significantly higher than anticipated and negatively impact our ability to commercialize our fuel technology.
Current report
the cost of continuing to optimize our fuel production process;
Current report
cost of licensing any subsequent fuel facilities;
Current report
the actual manufacturing efficiency, throughput rates, and yield we achieve at commercial scale;
Current report
maintaining our 40-year Special Nuclear Material License under 10 CFR and complying with the requirements of regulators and applicable laws and regulations;
Current report
our ability to improve and optimize the fuel manufacturing process;
Current report
If we fail to achieve our projected manufacturing efficiencies, throughput rates, or production costs at TX-1, or cannot allocate or secure sufficient funding on acceptable terms to construct TX-2 or subsequent facilities, our ability to meet customer demand and expected revenues would be materially adversely affected. Any of the factors above and other factors could result in significant delays, cost increases, or our inability to produce TRISO-X fuel at the volumes and costs required to support Xe-100 deployment. Any material change to our assumptions, cost overruns, or other unexpected increases could have a material adverse effect on our expected revenues, gross margins, growth prospects, and results of operations. In addition, we expect to contract with third parties to supply them with TRISO-X fuel to the extent our customer timelines permit. Any such arrangements could face delays, regulatory or production constraints, or challenges meeting such third parties’ timelines, which could limit potential commercial opportunities or negatively affect customer relationships.
Current report
In certain instances, we have in the past and may in the future contract to procure long lead-time items, such as enrichment services and graphite, and engineering activities to support project timelines. While we currently expect to subsequently be reimbursed or compensated by our customers or, if a milestone is not achieved, to repurpose these items and activities across other projects, our results of operations may be harmed if we do not ultimately pass on the payments and purchase obligations to a current or future customer. Certain of these arrangements have in the past and likely will in the future include multi-year purchase commitments that commit us to purchasing volumes that may, under certain circumstances, mismatch our future needs, require us to make payments in advance of delivery that may not be fully recoverable, afford our suppliers flexibility as to delivery timing, and limit our ability to resell or otherwise use materials we do not consume. In addition, the pricing terms of these arrangements could, under certain conditions, result in our paying more than prevailing market prices. Any of the foregoing could increase our costs, disrupt our supply, leave us bearing amounts we are unable to recover or could cause us to experience delays in, or the inability to, manufacture our TRISO-X fuel or SMRs.
Current report
We currently use and expect to continue to explore the usage of third-party AI or machine learning (“ML”) platforms, offerings and tools, including AI chatbots and generative AI products (“AI/ML Technology”), in our internal operations. For example, we have internal proprietary AI tools that are utilized by our employees. In addition, we announced in July 2026 that we are a founding member of the Prometheus project and, as such, will work with other members to accelerate advanced nuclear deployment through the use of AI. Our participation in multi‑party AI initiatives may increase our dependence on third‑party tools and methodologies and could expose us to risks arising from consortium partners’ governance, data practices, or technical performance.
Current report
Further, many countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. Many countries also limit the enforceability of patents against government agencies or government contractors. In these countries, the patent owner may have limited remedies, which could materially diminish the value of such patent. If we or any of our licensors are forced to grant a license to third parties with respect to any patents relevant to our business, our competitive position may be impaired, and our business and financial condition may be adversely affected.
Current report
(i) the tax basis adjustments expected to be obtained by X-Energy, Inc. resulting from (a) any future redemptions or exchanges of Common Units from the TRA Holders; (b) certain distributions (or deemed distributions) by XERC; and (c) payments made under the TRA (“Basis Adjustments”);
Current report
(ii) (a) the tax basis in certain assets of XERC and certain of its direct or indirect subsidiaries (including assets that will eventually be subject to depreciation or amortization once placed in service) that is obtained by X-Energy, Inc., in connection with and is attributable to a Common Unit exchanged or redeemed by a TRA Holder, including with respect to Common Units contributed to X-Energy, Inc. by a TRA Holder in connection with the IPO and (b) the tax basis obtained by X-Energy, Inc. in connection with the IPO as a result of existing tax basis in certain assets of XERC and certain of its direct or indirect subsidiaries, including assets that will eventually be subject to depreciation or amortization, once placed in service (“Existing Basis”);
Current report
(iii) (a) the share of tax basis (including under Sections 734(b), 743(b) and 754 of the Internal Revenue Code of 1986, as amended, (the “Code”) and Section 1.743-l(h) of the Treasury Regulations and, in each case, the comparable sections of U.S. state and local tax law) of certain of the assets of XERC and each of its direct or indirect subsidiaries that is treated as a partnership or disregarded entity for U.S. federal, and applicable state and local, income tax purposes (but excluding any such subsidiary to the extent it is directly or indirectly held by or through any entity treated as a corporation for U.S. federal, and applicable state and local, income tax purposes) that are amortizable under Section 197 of the Code or that are otherwise amortizable or depreciable for U.S. federal income tax purposes, in each case, attributable to the Common Units acquired by us from the Blocker Companies in the Blocker Mergers and (b) net operating losses (and carryforwards thereof), capital losses (and carryforwards thereof), disallowed interest expense carryforwards under Section 163(j) of the Code and credit carryforwards of the Blocker Companies relating to taxable periods ending on or prior to the date of this offering, but, in the case of clause, (b) excluding any tax attribute of a Blocker Company that is used to offset taxes of such Blocker Company, if such offset taxes are attributable to taxable periods (or portion thereof) ending on or prior to the date of the Blocker Mergers (“Blocker Tax Attributes”); and
Current report
changes to our milestones, development objectives, project timelines and other operational metrics;
Current report
failure of securities analysts to maintain coverage of us, changes in financial estimates by any securities analysts who follow our company, or our failure to meet these estimates or the expectations of investors;
Current report
rumors and market speculation involving us, other companies in our industry or our regulators;
Current report
Holders of our Class B common stock also hold and have rights to redeem XERC common units (“XERC Common Units”) for shares of our Class A common stock. Each holder of our Class B common stock holds an equal number of XERC Common Units. Subject to the terms of XERC’s Eighth Amended and Restated Operating Agreement, such holders have the right to have XERC redeem their XERC Common Units for shares of Class A common stock on a one-for-one basis. Upon any such redemption or exchange of XERC Common Units, the corresponding shares of our Class B common stock held by such holder is required to be surrendered and immediately canceled. As of August 11, 2026, we have 118,907,374 outstanding of each of XERC’s Common Units and our Class B common stock outstanding.
Current report
Warrant Exercise
Current report
In conjunction with a guarantee to the Bank of New York Credit Facility, the Company issued $10.0 million of warrants (the “June 2022 Warrants”) to Ghaffarian Enterprises, a related party, on June 30, 2022. On April 23, 2026, Ghaffarian Enterprises exercised the June 2022 Warrants, which were converted into 1.0 million units of XERC Series C preferred units.
Current report
On June 9, 2026 and June 14, 2026, respectively, Daniel Gross, our Chief Financial Officer, and Laura Garcia, our Chief Accounting Officer, each adopted a sell-to-cover instruction that constitutes a “Rule 10b5-1 trading arrangement” intended to satisfy the affirmative defense of Rule 10b5-1(c)(1) of the Exchange Act, providing for the automatic sale of the number of shares of Class A common stock necessary to satisfy tax withholding obligations upon the vesting or settlement of restricted stock units, whether previously granted or granted in the future. The number of shares that may be sold under these instructions is not determinable in advance. Each instruction will remain in effect indefinitely unless revoked in writing.
Removed paragraphs (10)
Previous report
The amount of time and funding needed to bring our nuclear fuel to market at scale may significantly exceed our expectations. Any material change to our assumptions or expectations, or any material overruns or other unexpected increases in costs, could have a material adverse effect on our financial condition and on our ability to develop and market other coated particle fuels.
Previous report
the cost of developing or licensing our nuclear fuel and TX-1, TX-2 and any subsequent fuel facilities;
Previous report
Because of this uncertainty, even if financing is available to us, we may need significantly more capital than anticipated, which may not be available on terms acceptable to us or at all. As a result, the expected revenues and other expected benefits from our nuclear fuel technology may be delayed or never realized. Any material change to our assumptions or expectations, or any material overruns or other unexpected increase in costs, could have a material adverse effect on our expected revenues, gross margins, estimates of our economics and our potential to develop and market other coated particle fuels.
Previous report
2024 Warrant Exercise and C-1 Preferred Units Issuance
Previous report
In March 2026, XERC amended the 2024 Warrant to permit the holder to elect a cashless exercise of the 2024 Warrant at an earlier date than provided by the 2024 Warrant’s original terms. The warrant holder exercised the warrant on March 18, 2026 and received 19.6 million Series C-1 Preferred Units.
Previous report
J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC, Jefferies LLC, and Moelis & Company LLC acted as representatives of the underwriters for the offering. None of the expenses associated with our IPO were paid, directly or indirectly, to any of our directors or officers, any persons owning 10% or more of any class of equity securities, or to any of our affiliates.
Previous report
During the three months ended March 31, 2026, none of our directors or officers (as defined in Rule 16a-1(f) under the Exchange Act)adopted, modifiedor terminateda “Rule 10b5-1 trading arrangement” and/or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K.
Previous report
On June 1, 2026, our Compensation and Culture Committee approved a grant that resulted in (i) 246,665 restricted stock units and (ii) 332,615 options granted to Daniel Gross, our Chief Financial Officer. The awards are subject to the terms of our 2026 Equity Incentive Plan.
Reworded paragraphs (105)
Previous wording
A description of the risks and uncertainties associated with our business is set forth below. You should carefully consider the risks and uncertainties described below, together with the other information in this Quarterly Report on Form 10-Q. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that adversely affect our business. If any of the following risks occur, our business, operating results, financial condition, and prospects could be materially and adversely affected. In that event, the trading price of our Class A common stock could decline, and you could lose all or a part of your investment.
Current wording
A description of the risks and uncertainties associated with our business is set forth below. You should carefully consider the risks and uncertainties described below, together with the other information in this Quarterly Report on Form 10-Q. The Company may not be able to accurately predict, control or mitigate these risks. Statements in this section are based on the Company’s beliefs and opinions regarding matters that could materially adversely affect the Company in the future and are not representations as to whether such matters have or have not occurred previously. The risks and uncertainties described below are not the only ones we face or may face in the future and should not be considered a complete statement of all potential risks and uncertainties. If any of the following or other risks occur, our business, operating results, financial condition, and prospects, among other factors, could be materially and adversely affected. In that event, the trading price of our Class A common stock could decline, and you could lose all or a part of your investment.
Previous wording
As of March 31, 2026, we had cash and cash equivalents of $224.1 million, short-term investment balances of $449.5 million and long-term investment balances of $270.4 million and continue to meet our obligations to customers, vendors, counterparties and employees in the ordinary course of business. Our expected primary uses of cash on a short-term and long-term basis are for working capital requirements, capital expenditures, and other general corporate services. Our primary working capital requirements are for project execution activities including purchases of materials, subcontracted services and payroll which fluctuate during the year, driven primarily by the timing and extent of activities required on new and existing projects. We expect that working capital requirements will need to continue to be funded through a combination of cash on hand, funding awarded under the ARDP Agreement, and capital raises or indebtedness.
Current wording
As of June 30, 2026, we had cash and cash equivalents of $1,145.4 million, short-term investment balances of $489.8 million and long-term investment balances of $264.6 million and continue to meet our obligations to customers, vendors, suppliers, counterparties and employees in the ordinary course of business. Our expected primary uses of cash on a short-term and long-term basis are for working capital requirements, capital expenditures, and other general corporate services. Our primary working capital requirements are for project execution activities including purchases of materials and long-lead procurement items, subcontracted services and payroll which fluctuate during the year, driven primarily by the timing and extent of activities required on new and existing projects. We expect that working capital requirements will need to continue to be funded through a combination of cash on hand, funding awarded under the ARDP Agreement, and capital raises or indebtedness.
Previous wording
In addition, management expects that future operating losses and negative operating cash flows may increase from historical levels because of additional costs and expenses related to the development of our technology and the development of market and strategic relationships with other businesses. In particular, in connection with our business plan, management anticipates additional increases in operating expenses and capital expenditures relating to the development and commercialization of the Xe-100 and construction of our fuel fabrication facilities. In addition, in advance of certain project milestones, X-energy’s costs may increase as we fund select long lead-time procurement and engineering activities to support project timelines, which may subsequently be reimbursed or if a milestone is not achieved, utilized across other projects. We intend to finance these expenses with further issuances of debt or equity securities. Thereafter, we expect we will need to raise additional capital and generate revenues to meet long-term operating requirements.
Current wording
In addition, management expects that future operating losses and negative operating cash flows may continue to increase from historical levels because of additional costs and expenses related to the development of our technology and the development of market and strategic relationships with other businesses. In particular, in connection with our business plan, management anticipates additional increases in operating expenses and capital expenditures relating to the development and commercialization of the Xe-100 and construction of our fuel fabrication facilities. In addition, X-energy’s prepayments and purchase commitments have increased and may increase in the future as we fund select long lead-time procurement items and engineering activities to support project timelines, which may subsequently be reimbursed or if a milestone is not achieved, repurposed across other projects. We may finance these expenses with further issuances of debt or equity securities. Thereafter, we expect we will need to raise additional capital and generate revenues to meet long-term operating requirements.
Previous wording
At present, our revenues are generally derived from contract services performed for the U.S. government and commercial entities from cost-share agreements such as the ARDP and research and development, product development, and fuel services provided to other government agencies and commercial entities. In the future, we expect to generate revenue through licensing or technology fees for the use of the proprietary intellectual property and build-to-print design of the Xe-100 technology, project planning, assembly coordination, construction support, regulatory support, procurement support, long-term services to customers and the supply of fuel and associated services. However, we have not yet entered into any such licensing, technology or other agreements, and there can be no assurances that customers will accept our anticipated fees and pricing under these agreements or that we will be able to charge the fees and pricing that we anticipate under our business plan. If we are unable to obtain sufficient fees and pricing under these agreements, our business, financial condition, operating results and future prospects will be materially and adversely affected.
Current wording
At present, our revenues are generally derived from contract services performed for the U.S. government and commercial entities from cost-share agreements such as the ARDP and research and development, and product development. In the future, we expect to generate revenue through licensing or technology fees for the use of the proprietary intellectual property and build-to-print design of the Xe-100 technology, project planning, assembly coordination, construction support, regulatory support, procurement support, long-term services to customers and the supply of fuel and associated services. However, we have not yet entered into any such licensing, technology or other agreements, and there can be no assurances that customers will accept our anticipated fees and pricing under these agreements or that we will be able to charge the fees and pricing that we anticipate under our business plan. If we are unable to obtain sufficient fees and pricing under these agreements, our business, financial condition, operating results and future prospects will be materially and adversely affected.
Previous wording
Our revenue growth also may be adversely affected by other factors including: our inability to maintain, grow and develop X-energy products; our ability to continue to receive funding from government contracts; weakness in the industry generally; general economic conditions, including as a result of tariffs, high interest rates and inflation; terrorism, sanctions or other geopolitical events globally; global pandemics and other public health emergencies; increasing competition; and the other risks described in this “Risk Factors” section.
Current wording
Our revenue growth also may be adversely affected by other factors including: our inability to maintain, grow and develop our products; our ability to continue to receive funding from government contracts; weakness in the industry or our customers’ industries generally; general economic conditions, including as a result of tariffs, high interest rates and inflation; terrorism, sanctions or other geopolitical events globally; global pandemics and other public health emergencies; increasing competition; and the other risks described in this “Risk Factors” section.
Previous wording
The success of our business will depend in large part on our ability to successfully deliver the Xe-100 to customers on time and on budget at guaranteed performance levels, which would give greater confidence to our subsequent customers. There is no guarantee that our planned deployments of the Xe-100 will be successful, on schedule, or on budget, or that our customers will elect to exercise their options for additional Xe-100 units. We are in the design phase of the Xe-100, and as a result, our cost and schedule estimates are subject to significant uncertainty and change. Our current cost model and estimates have limited fidelity and may prove inaccurate, and our business may see material cost growth, schedule extensions, or scope changes that adversely affect project economics, final investment decisions and customer commitments.
Current wording
The success of our business will depend in large part on our ability to successfully deliver the Xe-100 to customers on time and on budget at guaranteed performance levels, which would give greater confidence to our subsequent customers. There is no guarantee that our planned deployments of the Xe-100 will be successful, on schedule, or on budget, or that our customers will elect to exercise their options for additional Xe-100 units. We are in the design phase of the Xe-100, and as a result, our cost and schedule estimates are subject to significant uncertainty and change. Our current cost model and estimates have limited fidelity and may prove inaccurate, and our business may see material cost growth, schedule extensions, or scope changes that adversely affect project economics, final investment decisions and customer commitments. See “We may not achieve the development, regulatory, deployment, commercialization or other operational milestones, timelines and expectations that we publicly announce from time to time.” In addition, our ability to maintain strong relationships with our customers and other counterparties is critical to the success of our business. If we fail to meet expectations, including as a result of factors outside of our control, our relationships with our customers and counterparties could be adversely affected, which could impact our ability to reach final investment decision, secure future opportunities and achieve our business plans.
Previous wording
We have previously experienced and may experience in the future, delays, cost overruns or other complications in the design, manufacture, production and delivery of the Xe-100 and related technology, such as TX-1 and TX-2, that could prevent us from delivering any SMRs on our current anticipated timeline. For example, as part of our iterative Xe-100 reactor design process, we employ phased development cycles and review gates to progress from concept through product delivery. Each system within the reactor plant undergoes a thorough assessment at each gate to determine if all product requirements (for example, performance, safety, delivery) are being met or are at risk of not achieving full capability. In the course of certain major gate reviews of the Xe-100 reactor design in the past, we identified areas where further design or analysis work was required to achieve a fully acceptable engineered design. Likewise, development delays at our TX-1 fuel fabrication facility site have occurred in connection with resolving certain infrastructure requirements and environmental analyses prior to commencing construction. While the aforementioned activities, and others like them, have not materially delayed delivery for a customer to date, they may do so in the future. If delays like these occur, if our remediation or resolution measures and process changes do not continue to be successful, if we fail to find satisfactory manufacturers or suppliers, or if we experience issues with planned manufacturing or construction activities or design and safety, we could experience issues or delays in reaching, sustaining or increasing deployment and sales of our SMRs. The effect of such delays may be increased as a result of rising commodity prices and interest rates, which have in the past and may in the future increase costs to us and to our customers and may adversely affect the competitiveness of our reactors compared to competing means of supplying electricity or heat.
Current wording
We have previously experienced and may experience in the future, delays, cost overruns or other complications in the design, manufacture, production and delivery of the Xe-100 and related technology, such as TX-1 and TX-2, that could prevent us from delivering any SMRs on our current anticipated timeline. For example, as part of our iterative Xe-100 reactor design process, we employ phased development cycles and review gates to progress from concept through product delivery. Each system within the reactor plant undergoes a thorough assessment at each gate to determine if all product requirements (for example, performance, safety, delivery) are being met or are at risk of not achieving full capability. In the course of certain major gate reviews of the Xe-100 reactor design in the past, we identified areas where further design or analysis work was required to achieve a fully acceptable engineered design. Likewise, development delays and cost increases at our TX-1 fuel fabrication facility site have occurred in connection with, among other items, resolving certain infrastructure and oversight requirements and environmental analyses. While the aforementioned activities, and others like them, have not materially delayed delivery for a customer to date, they may do so in the future. If delays like these occur in the future, if our remediation or resolution measures and process changes do not continue to be successful, if we fail to find satisfactory manufacturers or suppliers, or if we experience issues with manufacturing or construction activities or design and safety, we could experience issues or delays in reaching, sustaining or increasing deployment and sales of our SMRs. The effect of such delays may be increased as a result of rising inflation, commodity prices and interest rates, which have in the past and may in the future increase costs to us and to our customers and may adversely affect the competitiveness of our reactors compared to competing means of supplying electricity or heat.
Previous wording
As of March 31, 2026, we have been reimbursed approximately $508.0 million in ARDP funding. The DOE manages allocation and reimbursement of funds appropriated by Congress, approval of extensions, and compliance with program requirements. If extensions are not granted or if the project timeline extends further than currently anticipated, the incremental funding requirement that Dow would need to bear for its portion of the ARDP project could increase materially. Any such increase could affect Dow’s final investment decision, cause delays or modifications to the project scope or timeline, or lead Dow to terminate its participation in the project. X-energy is under no obligation to continue funding the Dow project or construction on the plant itself in the event Dow does not make a final investment decision in the Dow project.
Current wording
As of June 30, 2026, we have been reimbursed approximately $546.7 million in ARDP funding. The DOE manages allocation and reimbursement of funds appropriated by Congress, approval of extensions, and compliance with program requirements. If extensions are not granted or if the project timeline extends further than currently anticipated, the incremental funding requirement that Dow would need to bear for its portion of the ARDP project could increase materially. Any such increase could affect Dow’s final investment decision, cause delays or modifications to the project scope or timeline, or lead Dow to terminate its participation in the project. X-energy is under no obligation to continue funding the Dow project or construction on the plant itself in the event Dow does not make a final investment decision in the Dow project.
Previous wording
Any capacity figures or unit economics numbers utilized by us are based on our current agreements with customers, including Dow, Amazon, and Centrica, and reflect our internal assumptions regarding the capacity of the Xe-100, the number of units that may be deployed, and the time periods in which we anticipate such units being constructed and placed into service. Numerous risks and uncertainties could cause the actual deployed capacity or unit economics to differ materially from the illustrative figures, including our and our customers’ ability to successfully construct and deliver Xe-100s (none of which have been built or operated to date) or to do so on a timely basis, obtain required regulatory approvals, secure adequate financing, and manage supply chain constraints, labor availability, cost overruns, and construction delays. In addition, customers such as Dow, Amazon, and Centrica have rights to delay, reduce, or terminate their commitments, and any such changes, along with potential modifications in the scope, scale, or timing of customer projects, technological or engineering challenges, or shifts in energy policy, electricity market demand, or public acceptance of nuclear power, could materially impact our ability to achieve our estimated levels of capacity. As a result, our actual cumulative deployed capacity and unit economics may be substantially less than we anticipate, or may not be achieved at all, and investors should not place undue reliance on these estimates in evaluating our business, financial condition, operating results or future prospects.
Current wording
Any capacity figures or unit economics numbers utilized by us are based on our current agreements with customers, including Dow, Amazon, and Centrica, and reflect our internal assumptions regarding the capacity of the Xe-100, the number of units that may be deployed, and the time periods in which we anticipate such units being constructed and placed into service. Numerous risks and uncertainties could cause the actual deployed capacity or unit economics to differ materially from the illustrative figures, including our and our customers’ ability to successfully construct and deliver Xe-100s (none of which have been built or operated to date) or to do so on a timely basis, obtain required regulatory approvals, secure adequate financing, and manage supply chain constraints, labor availability, cost overruns, and construction delays. In addition, customers such as Dow, Amazon, and Centrica have rights to delay, reduce, or terminate their commitments, and any such changes, along with potential modifications in the scope, scale, or timing of customer projects, technological or engineering challenges, or shifts in energy policy, electricity market demand, or public acceptance of nuclear power and data centers, could materially impact our ability to achieve our estimates. As a result, our actual cumulative deployed capacity and unit economics may be substantially less than we anticipate, or may not be achieved at all, and investors should not place undue reliance on these estimates in evaluating our business, financial condition, operating results or future prospects.
Previous wording
We do not carry insurance coverage for the performance of the Xe-100 or its components’ performance. Even if we purchase this kind of insurance, the insurance may not fully protect us from the financial impact of defending against product liability claims that may occur in future. In the event that our technologies fail to perform as expected, are inferior to those of our competitors or are perceived as less safe than those of our competitors, our business and financial condition could be materially and adversely impacted. Other than contractual protections provided by our vendors for certain components and systems, we have not employed other risk sharing structures to mitigate all risks associated with the successful delivery and performance of the Xe-100. As we have not yet delivered the Xe-100 or any other reactor to customers, we have determined that our current insurance coverage is sufficient for our business operations. However, we may need to purchase additional insurance to operate our business. If we fail to obtain the required insurance, or if we were to incur substantial losses or liabilities due to fire, explosions, floods, other natural disasters or accidents or business interruption for which we are not adequately covered under our existing insurance, our business and results of operations could be materially and adversely affected.
Current wording
We do not carry insurance coverage for the performance of the Xe-100 or its components’ performance. Even if we purchase this kind of insurance, the insurance may not fully protect us from the financial impact of defending against product liability claims that may occur in future. In the event that our technologies fail to perform as expected, are inferior to those of our competitors or are perceived as less safe than those of our competitors, our business and financial condition could be materially and adversely impacted. Other than contractual protections provided by our counterparties for certain components and systems and cost-sharing under ARDP, we have not employed other risk sharing structures to mitigate all risks associated with the successful delivery and performance of the Xe-100. As we have not yet delivered the Xe-100 or any other reactor to customers, we have determined that our current insurance coverage is sufficient for our business operations. However, we may need to purchase additional insurance to operate our business. If we fail to obtain the required insurance, or if we were to incur substantial losses or liabilities due to fire, explosions, floods, other natural disasters or accidents or business interruption for which we are not adequately covered under our existing insurance, our business and results of operations could be materially and adversely affected.
Previous wording
In addition to at least $500 million in funding appropriated in FY2020-FY2024, the Infrastructure Investment and Jobs Act (Public Law 11758) appropriated funds for the ARDP in total of $2.47 billion. Of ARDP funding to date, at least $1.1 billion has been allocated to X-energy’s award. Ongoing ARDP funding is provided to X-energy through Continuation Applications for each “budget period”, with the latest funding through at least August of 2026. Congress has appropriated funding that was allocated towards X-energy’s award in a total of approximately $1.1 billion of the $1.2 billion commitment to support our ARDP award. Additionally, the U.S. Congress has also appropriated $3.1 billion to ARDP, some portion of which we expect to be allocated to X-energy. In recent years, U.S. government appropriations have been affected by larger U.S. government budgetary issues and related legislation. As of March 31, 2026, we have been reimbursed approximately $508.0 million in funding under the ARDP. We cannot predict the extent to which funding may be increased, if at all, or if total funding may be reduced as part of a subsequent appropriations process ultimately approved by the U.S. Congress and the President of the U.S. or in separate supplemental appropriations or continuing resolutions, as applicable. The termination of funding for the ARDP would result in a loss of anticipated future revenue attributable to that program, which could have an adverse impact on our operations. In addition, the termination of the ARDP or the failure to commit additional funds to the ARDP could result in lost revenue and increase our overall costs of doing business, and may result in the deferral or more limited development of TX-1, and jeopardize our ability to complete our initial deployments of the Xe-100, which could adversely affect our ability to market and deploy Xe-100 units to other customers, and other adverse commercial effects.
Current wording
Additionally, the U.S. Congress has also appropriated an additional $3.1 billion to ARDP. While we have been notified that we were selected to receive an additional amount under the ARDP, any increase in the amount allocated to X-energy remains subject to execution of a subsequent contract award modification to the ARDP Agreement by the DOE’s contracting officer and continuation application approvals. Delays in the allocation process or receiving a materially smaller allocation than anticipated could adversely affect our ability to ramp up on construction and fund long lead procurements. We cannot predict the extent to which funding may be increased, if at all, or if total funding may be reduced as part of a subsequent appropriations process ultimately approved by the U.S. Congress and the President of the U.S. or in separate supplemental appropriations or continuing resolutions, as applicable. The termination of funding for the ARDP would result in a loss of anticipated future revenue attributable to that program, which could have an adverse impact on our operations. In addition, the termination of the ARDP or the failure to commit additional funds to the ARDP could result in lost revenue and increase our overall costs of doing business, and may result in the deferral or more limited development of TX-1, and jeopardize our ability to complete our initial deployments of the Xe-100, which could adversely affect our ability to market and deploy Xe-100 units to other customers, and other adverse commercial effects.
Previous wording
Under the ARDP Agreement, if we fail to incur eligible costs within the currently approved period of performance, including any DOE-approved extension, we would forgo reimbursement for such costs and could face de-obligation of unobligated funds at closeout. Extensions under the ARDP Agreement are at the DOE’s discretion. If the DOE denies or limits an extension, our ability to claim ARDP reimbursement after 2027 could be materially curtailed. Continuation of funding across budget periods is further contingent on additional appropriations and DOE policy. Any adverse appropriations outcomes, performance shortfalls, or contractual compliance issues could materially reduce or eliminate ARDP funding available to us. Because the award is incrementally funded and DOE’s maximum share at any time is capped at amounts actually obligated, even with an extension granted, we may not receive additional ARDP funding unless and until DOE agrees to obligate further amounts to us.
Current wording
Under the ARDP Agreement, if we fail to incur eligible costs within the currently approved period of performance, including any DOE-approved extension, we would forgo reimbursement for such costs and could face de-obligation of unobligated funds at closeout. Extensions under the ARDP Agreement are at the DOE’s discretion. If the DOE denies or limits an extension, our ability to claim ARDP reimbursement could be materially curtailed. Continuation of funding across budget periods is further contingent on additional appropriations and DOE policy. Any adverse appropriations or allocations outcomes, performance shortfalls, or contractual compliance issues could materially reduce or eliminate ARDP funding available to us. Because the award is incrementally funded and DOE’s maximum share at any time is capped at amounts actually obligated, even with an extension granted, we may not receive additional ARDP funding unless and until DOE agrees to obligate further amounts to us.
Previous wording
Government funding is subject to the political process, which is inherently unpredictable, highly competitive and dependent on budgetary limitations, congressional appropriations and administrative allotment of funds, all of which may be affected by changes in U.S. government policies resulting from various political developments. If political support for the prioritization of the development of nuclear energy decreases, including due to policy changes by the current administration or future administrations and changing congressional funding priorities, we may be unable to secure continued government funding under the ARDP or any requested increases to such funding. Our failure to secure upward adjustments in the ARDP funding to cover actual costs could have a material, adverse impact on our business prospects, which would materially and adversely affect our development timeline, financial condition, relationship with our partners, results of operations and cash flows. In addition, any such failure to obtain requested increases to such funding could result in a more limited ARDP fuel facility development or other commercial changes.
Current wording
Government funding is subject to the political process, which is inherently unpredictable, highly competitive and dependent on budgetary limitations, congressional appropriations and administrative allotment of funds, all of which may be affected by changes in U.S. government policies resulting from various political developments. If political support for the prioritization of the development of nuclear energy decreases, including due to policy changes by the current administration or future administrations and changing congressional funding priorities, we may be unable to secure continued government funding under the ARDP or any increases to such funding. Our failure to secure upward adjustments in the ARDP funding to cover actual costs could have a material, adverse impact on our business prospects, which would materially and adversely affect our development timeline, financial condition, relationship with our partners, results of operations and cash flows. In addition, any such failure to obtain requested increases to such funding could result in a more limited ARDP fuel facility development or other commercial changes.
Previous wording
Our current ARDP Agreement provides for 50% reimbursement of $2.4 billion in eligible costs ($1.2 billion in total reimbursement). As of March 31, 2026, we have received approximately $508.0 million in ARDP funding. We submit our budgets through an ongoing “budget period” basis tied to project milestones under the ARDP Agreement, and our current budget covers a budget period that began in March of 2025 and extends through August 2026. At the time of the initial award, the estimated total project cost was approximately $2.4 billion, which reflected management’s then-current estimates for design, licensing, fuel fabrication facility construction of TX-1, and demonstrator reactor construction activities over the program period. Since 2020, the estimated total project costs have increased, and we expect that cost estimates will continue to be revised in connection with each budget period’s Continuation Application as project scope, market conditions, and external factors evolve.
Current wording
Our current ARDP Agreement provides for 50% reimbursement of $2.4 billion in eligible costs ($1.2 billion in total reimbursement). As of June 30, 2026, we have received approximately $546.7 million in ARDP funding. We submit our budgets through an ongoing “budget period” basis tied to project milestones under the ARDP Agreement, and our current budget covers a budget period that began in March 2025 and extends through March 2027. At the time of the initial award, the estimated total project cost was approximately $2.4 billion, which reflected management’s then-current estimates for design, licensing, fuel fabrication facility construction of TX-1, and demonstrator reactor construction activities over the program period. Since 2020, the estimated total project costs have increased, and we expect that cost estimates will continue to be revised in connection with each budget period’s Continuation Application as project scope, market conditions, and external factors evolve.
Previous wording
Continuation of funding is contingent on DOE approval of additional budget periods. Extensions under the ARDP Agreement are at the DOE’s discretion and are subject to criteria including: (1) availability of appropriations; (2) availability of future-year budget authority; (3) substantial progress toward meeting project objectives; (4) submittal of required reports; and (5) compliance with the terms and conditions of the award. We submit a Continuation Application to the DOE to extend funding; however, there can be no assurance that extensions will be approved. As part of the Continuation Application process required under the ARDP Agreement, we are required to submit updated budgets for each subsequent budget period, which are subject to review and approval by the DOE. These updated budgets reflect the best information available at the time of submission and may differ materially from prior estimates due to the factors described above. The DOE’s current reimbursement share under the ARDP is $1.2 billion (representing 50% of the original $2.4 billion estimate), meaning any increases in estimated project costs above the original $2.4 billion estimate without adjustment of the current award value would require X-energy and Dow to fund the incremental amounts from non-ARDP sources. If actual project costs exceed the amounts eligible for ARDP reimbursement, we and Dow would be required to bear the full amount of such excess costs without government cost-sharing, which could have a material adverse effect on our business, financial condition, results of operations and cash flows. X-energy and Dow are under no obligation to continue funding the project scope from ARDP.
Current wording
Continuation of funding is contingent on DOE approval of additional budget periods. Extensions under the ARDP Agreement are at the DOE’s discretion and are subject to criteria including: (1) availability of appropriations; (2) availability of future-year budget authority; (3) substantial progress toward meeting project objectives; (4) submittal of required reports; and (5) compliance with the terms and conditions of the award. We submit a Continuation Application to the DOE from time to time to extend funding; however, there can be no assurance that extensions will be approved. As part of the Continuation Application process required under the ARDP Agreement, we are required to submit updated budgets for each subsequent budget period, which are subject to review and approval by the DOE. These updated budgets reflect the best information available at the time of submission and may differ materially from prior estimates due to the factors described above. The DOE’s current reimbursement share under the ARDP is $1.2 billion (representing 50% of the original $2.4 billion estimate), meaning any increases in estimated project costs above the original $2.4 billion estimate without adjustment of the current award value would require X-energy and Dow to fund the incremental amounts from non-ARDP sources. While we have been notified that we were selected to receive an additional amount under the ARDP, any increase in the amount allocated to X-energy remains subject to execution of a subsequent contract award modification to the ARDP Agreement by the DOE’s contracting officer and continuation application approvals. If actual project costs exceed the amounts eligible for ARDP reimbursement, we and Dow would be required to bear the full amount of such excess costs without government cost-sharing, which could have a material adverse effect on our business, financial condition, results of operations and cash flows. X-energy and Dow are under no obligation to continue funding the project scope from ARDP.
Previous wording
Under the ARDP Agreement, the total extension of the period of performance may not exceed three years beyond the original 7 year award period, resulting in a maximum period of performance of 10 years. Any additional extension would require an approval within DOE beyond the authority provided in the ARDP Agreement. Based on the original award date in February 2021, the outside date for ARDP funding, assuming all extensions are granted, is expected to be in or around 2030. Dow, as our partner under the ARDP Agreement, does not separately need to apply for ARDP funding or extensions. Dow’s 50% reimbursements for the Dow project are tied to project milestones. If the Dow project, with a target commercial operations date in the early 2030s, is unable to be completed within the ARDP funding period and Dow elects to construct the project, Dow would then fund remaining costs related to the construction of the reactor without ARDP reimbursement. If Dow is unwilling or unable to do so, the Dow project could be delayed or terminated, which would have a material adverse effect on our business, financial condition, results of operations and cash flows. X-energy is under no obligation to fund the construction of the Dow project, and is under no obligation to construct a reactor without a final investment decision from Dow.
Current wording
Under the ARDP Agreement, the total extension of the period of performance may not exceed three years beyond the original seven year award period, resulting in a maximum period of performance of 10 years. Any additional extension would require an approval within DOE beyond the authority provided in the ARDP Agreement. Based on the original award date in February 2021, the outside date for ARDP funding, assuming all extensions are granted, is expected to be in or around 2030. Dow, as our partner under the ARDP Agreement, does not separately need to apply for ARDP funding or extensions. Dow’s 50% reimbursements for the Dow project are tied to project milestones. If the Dow project, with a target commercial operations date in the early 2030s, is unable to be completed within the ARDP funding period and Dow elects to construct the project, Dow would then fund remaining costs related to the construction of the reactor without ARDP reimbursement. If Dow is unwilling or unable to do so, the Dow project could be delayed or terminated, which would have a material adverse effect on our business, financial condition, results of operations and cash flows. X-energy is under no obligation to fund the construction of the Dow project, and is under no obligation to construct a reactor without a final investment decision from Dow.
Previous wording
If we fail to incur eligible costs within the currently approved period of performance, including any DOE-approved extension, we would forgo reimbursement for such costs and could face de-obligation of unobligated funds at closeout. Even with an extension granted, we may not receive additional ARDP funding unless and until DOE agrees to obligate further amounts to us. Any adverse appropriations outcomes, performance shortfalls, contractual compliance issues, or denial of extension requests could materially reduce or eliminate ARDP funding available to us, which would have a material adverse effect on our business, financial condition, results of operations and cash flows.
Current wording
If we fail to incur eligible costs within the currently approved period of performance, including any DOE-approved extension, we would forgo reimbursement for such costs and could face de-obligation of unobligated funds at closeout. Even with an extension granted, we may not receive any expected or future additional ARDP funding unless and until DOE agrees to obligate further amounts to us and executes a subsequent contract award modification to the ARDP Agreement. Any adverse appropriations or allocations outcomes, performance shortfalls, contractual compliance issues, or denial of extension requests could materially reduce or eliminate ARDP funding available to us, which would have a material adverse effect on our business, financial condition, results of operations and cash flows.
Previous wording
Supply chain disruptions and increased costs for nuclear-grade materials and components;
Current wording
supply chain disruptions, increased costs for nuclear-grade materials and components, and funding and purchase obligations for long lead-time procurement items and engineering activities;
Previous wording
As part of the Continuation Application process, we submit updated budgets to the DOE for each budget period, including cost estimates and supporting justification. These updated estimates are subject to DOE review and approval and may differ materially from prior estimates. In January 2026, Congress appropriated additional funding of $3.1 billion towards three Advanced Reactor programs, including (1) the Generation III SMR deployments, (2) the Risk Reduction for Future Demonstrations Program, and (3) the Advanced Reactor Demonstration Program, of which X-energy is one of two awardees. We expect to be allocated some portion of this to our project incremental to the current $1.1 billion allocated to date. If the DOE does not approve updated budgets or if additional funding is not appropriated by Congress, we may be unable to complete project activities within the ARDP cost-share framework. This could require us to obtain additional capital on terms that may not be favorable, which could materially impact our business, financial condition, operating results and future prospects.
Current wording
As part of the Continuation Application process, we submit updated budgets to the DOE for each budget period, including cost estimates and supporting justification. These updated estimates are subject to DOE review and approval and may differ materially from prior estimates. In January 2026, Congress appropriated additional funding of $3.1 billion towards three Advanced Reactor programs, including (1) the Generation III SMR deployments, (2) the Risk Reduction for Future Demonstrations Program, and (3) the Advanced Reactor Demonstration Program, of which X-energy is one of two awardees. We expect to be allocated some portion of this to our project incremental to the current $1.1 billion allocated to date. Any amount allocated to X-energy remains subject to official OMB approval and entry into a contract modification to the ARDP Agreement. Delays in the allocation process or receiving a materially smaller allocation than anticipated could adversely affect our ability to ramp up on construction and fund long lead-time procurement items and engineering activities. If the DOE does not approve updated budgets or if additional funding is not appropriated by Congress, we may be unable to complete project activities within the ARDP cost-share framework. This could require us to obtain additional capital on terms that may not be favorable, which could materially impact our business, financial condition, operating results and future prospects.
Previous wording
In order to achieve the substantial future revenue growth we have projected, we must finalize our reactor design, receive regulatory approvals, including NRC licensing of additional fuel fabrication facilities, and continue to develop and market new products and services to traditional and nontraditional end users. We intend to expand our operations significantly to meet anticipated demand. To properly manage our growth, we will need to hire and retain additional personnel, upgrade our existing operational management and financial and reporting systems, and improve our business processes and controls. Our future expansion will be dependent on:
Current wording
In order to achieve profitability and future growth, we must finalize our reactor design, receive regulatory approvals, including NRC licensing of additional fuel fabrication facilities, and continue to develop and market new products and services to traditional and nontraditional end users. We intend to expand our operations significantly to meet anticipated demand. To properly manage our growth, we will need to hire and retain additional personnel, upgrade our existing operational management and financial and reporting systems, and improve our business processes and controls. Our future expansion will be dependent on:
Previous wording
completing the licensing and construction of TX-1, TX-2 and subsequent fuel fabrication facilities and optimizing the production of our TRISO-X fuel;
Current wording
completing the construction of TX-1 and TX-2 and licensing and construction of subsequent fuel fabrication facilities and optimizing the production of our TRISO-X fuel;
Previous wording
If our operations continue to grow as planned, of which there can be no assurance, we will need to expand our sales and marketing, research and development, customer and commercial strategy, products and services, supply chain, and manufacturing functions, among others. These efforts will require us to invest significant financial and other resources, including in industries and sales channels in which we have limited experience to date. We will also need to continue to leverage our manufacturing and operational systems and processes, and there is no guarantee that we will be able to scale the business as currently planned or within the planned timeframe. The continued expansion of our business may also require additional manufacturing and operational facilities, as well as space for administrative support, and there is no guarantee that we will be able to find suitable locations for such facilities.
Current wording
If our operations continue to grow as planned, of which there can be no assurance, we will need to continue to expand our team, including expanding our sales and marketing, research and development, customer and commercial strategy, products and services, supply chain, and manufacturing functions, among others. These efforts will require us to invest significant financial and other resources, including in industries and sales channels in which we have limited experience to date. We will also need to continue to leverage our manufacturing and operational systems and processes, and there is no guarantee that we will be able to scale the business as currently planned or within the planned timeframe. The continued expansion of our business may also require additional manufacturing and operational facilities, as well as space for administrative support, and there is no guarantee that we will be able to find suitable locations for such facilities.
Previous wording
Our continued growth could increase the strain on our resources, and we could experience operating difficulties, including difficulties in hiring and training employees, finding manufacturing capacity to produce our SMRs and related equipment, delays in production, challenges in scaling up fuel and component fabrication capacity and difficulty sourcing adequate raw material, such as graphite and HALEU (which our customers are responsible for procuring), for our reactors. These difficulties may divert the attention of management and key employees and impact financial and operational results. If we are unable to drive commensurate growth, these costs, which include lease commitments, headcount and capital assets, could result in decreased margins, which could have a material adverse effect on our business, financial condition, operating results and future prospects.
Current wording
Our continued growth has in the past and could in the future increase the strain on our resources, and we could experience operating difficulties, including difficulties in hiring and training employees, finding manufacturing capacity to produce our SMRs and related equipment, delays in production, challenges in scaling up fuel and component fabrication capacity and difficulty sourcing adequate raw material, such as graphite and HALEU, for our reactors. These difficulties may divert the attention of management and key employees and impact financial and operational results. If we are unable to drive commensurate growth, these costs, which include lease commitments, headcount and capital assets, could result in decreased margins, which could have a material adverse effect on our business, financial condition, operating results and future prospects.
Previous wording
While our SMR design will be actively managed through design reviews, prototyping, testing, involvement of external partners with subject matter expertise, and application of approaches utilized in the operation of the Xe-100, we could still fail to identify latent design, manufacturing, construction, and operations issues early enough to avoid negative effects on production, fabrication, construction or the ultimate performance of the Xe-100 and related technologies, or we may encounter unexpected regulatory issues. Moreover, the cost and time associated with the construction and maintenance of our SMRs may be greater than we or our customers expect because we or they may face a lack of a domestic labor force with relevant commercial experience and an inexperienced or insufficient supply chain for this type of reactor. Where these issues arise at later stages of deployment, deployment could be subject to greater costs or be significantly delayed, which could materially and adversely affect our business.
Current wording
While our SMR design will be actively managed through design reviews, prototyping, testing, involvement of external partners with subject matter expertise, and application of approaches utilized in the operation of the Xe-100, we could still fail to identify latent design, manufacturing, construction, and operations issues early enough to avoid negative effects on production, fabrication, construction or the ultimate performance of the Xe-100 and related technologies, or we may encounter unexpected regulatory issues. Moreover, the cost and time associated with the construction and maintenance of our SMRs may be greater than we or our customers expect because we or they may face a lack of a domestic labor force with relevant commercial experience and an inexperienced or insufficient supply chain for this type of reactor. Where these issues arise at later stages of deployment, deployment could be subject to greater costs or be significantly delayed, which could materially and adversely affect our business. Although we expect nearly all of the cost to construct the Xe-100 is or will ultimately be passed on or borne by our customers, such costs incurred by our customers could significantly exceed their and our expectations, including for reasons outside of their and our control, which could make existing or prospective customers less likely to contract with us and use our SMR design in the future, which could have a material adverse effect on our business, results of operations and financial prospects.
Previous wording
Adoption of the Xe-100 among our potential customers may progress more slowly than we anticipate or it may be more expensive to bring potential customers into our pipeline. Any delay or failure to attract potential customers to our reactors or SMR technology may have a material and adverse impact on our business and financial condition.
Current wording
Adoption of the Xe-100 among our potential customers may progress more slowly than we anticipate or it may be more expensive to bring potential customers into our pipeline. If these customers do not adopt our Xe‑100 technology as quickly as expected, or if customer acquisition costs are higher than anticipated, our growth could be limited. Any delay or failure to attract potential customers to our reactors or SMR technology may have a material and adverse impact on our business and financial condition.
Previous wording
The development of our TRISO-X fuel at scale will take a significant amount of time and funding. TRISO-X fuel is produced through a highly specialized, small-batch manufacturing process. Scaling from pilot-scale production to commercial-scale production involves significant technical, regulatory, and economic challenges. Any shortfall in research, development, and testing funds, unexpected or significant increases in costs, any delay in achieving fuel development milestones, and any uncertainty in regulatory licensing timelines or adverse public reaction to developments in the use of nuclear power by special interest groups, community organizations and state and local government agencies leading to environmental litigation or other legal proceedings could result in significant delays and cost overruns and could adversely affect our ability to deploy, and our customers’ ability to operate, the Xe-100. At this stage, we cannot accurately predict the amount of funding or the time required to successfully manufacture and sell our nuclear fuel in the future at scale. The actual cost and time required to commercialize our fuel technology may vary significantly from our initial forecasts depending on, among other things:
Current wording
Any significant delay, inability to produce fuel efficiently and cost effectively at scale, unexpected or significant increases in costs, and any adverse public reaction to developments in the use of nuclear power, or litigation or other legal proceedings could result in significant delays and cost overruns in the construction of our fuel facilities or production of our nuclear fuel and could adversely affect our ability to deploy, and our customers’ ability to operate, the Xe-100. Our ability to maintain our timeline related to nuclear fuel production, scale manufacturing of our TRISO-X fuel, increase production efficiencies, reduce costs and work to commercialize our fuel technology may vary significantly from our current forecasts depending on, among other things:
Previous wording
adverse public reaction to the developments in the use of nuclear power resulting in environmental litigation or other legal proceedings;
Current wording
adverse public reaction to the developments in the use of nuclear power or in our customers’ industries, including resulting in environmental litigation or other legal proceedings;
Previous wording
staffing and training qualified personnel to operate TX-1, TX-2 and any other TRISO-X fuel facilities;
Current wording
availability, staffing and training of qualified personnel to operate TX-1, TX-2 and any other TRISO-X fuel facilities;
Previous wording
If our customers are unable to access HALEU, our ability to manufacture TRISO-X fuel will be adversely affected, which could have a material adverse effect on our business, financial condition, operating results and future prospects.
Current wording
If we or our customers are unable to access HALEU, our ability to manufacture TRISO-X fuel will be adversely affected, which could have a material adverse effect on our business, financial condition, operating results and future prospects.
Previous wording
Existing commercial nuclear infrastructure, including enrichment facilities and fuel fabrication facilities, were in most cases designed and are currently licensed to handle uranium in pellet and rod form, with enrichment up to 5% of the isotope Uranium 235 (LEU). Our fuel designs are based on a spherical pebble design composed of graphite, pyrolytic carbon and silicon carbide encapsulated uranium particles that have been enriched up to 15.5% for use in the Xe-100. This higher enriched uranium (greater than 5% but still below 20%) is known as HALEU. Supplying HALEU to our TX-1, TX-2 and any subsequent fuel fabrication facilities, which will manufacture the fuel for our SMRs, will require certain modifications to NRC licensing of existing commercial uranium enrichment facilities, none of which are owned or operated by us, along with the construction of our facilities and construction and NRC licensing of any subsequent fuel fabrication facilities.
Current wording
Existing commercial nuclear infrastructure, including enrichment facilities and fuel fabrication facilities, were in most cases designed and are currently licensed to handle uranium in pellet and rod form, with enrichment up to 5% of the isotope Uranium 235 (LEU). Our fuel designs are based on a spherical pebble design composed of graphite, pyrolytic carbon and silicon carbide encapsulated uranium particles that have been enriched up to 15.5% for use in the Xe-100. This higher enriched uranium (greater than 5% but still below 20%) is known as HALEU. Supplying HALEU to our TX-1, TX-2 and any subsequent fuel fabrication facilities, which will manufacture the fuel for our SMRs, will require certain modifications to NRC licensing of existing commercial uranium enrichment facilities, none of which are owned or operated by us, along with the construction of our TX-1 and TX-2 facilities and construction and NRC licensing of any subsequent fuel fabrication facilities.
Previous wording
Presently, HALEU enrichment services are available only in limited quantities globally. In the U.S., HALEU can be sourced in limited quantities from the DOE, and a limited domestic supply from the private sector that we do not expect will be a significant source of our HALEU. For example, we were allocated HALEU from the DOE Office of Nuclear Energy's HALEU Allocation Program in April 2025. The HALEU allocation is expected to provide a total supply of around 7.6 MTU which we estimate will be enough for our first Xe-100 plant with Dow. Despite U.S. government initiatives designed to ensure initial HALEU quantities, including the establishment of the HALEU Availability Program to ensure access to HALEU for civilian domestic research, development, demonstration, and commercial use, the HALEU program is still in its early stages, and significant progress is required to achieve reliable and scalable production.
Current wording
Presently, HALEU enrichment services are available only in limited quantities globally. In the U.S., HALEU can be sourced in limited quantities from the DOE, and a limited domestic supply from the private sector. In the private sector, we have entered into multiple enrichment contracts with suppliers that provide for the production and sale of HALEU and under which we have committed to purchase HALEU over several years. We also have a source of HALEU supply from the DOE. We were allocated HALEU from the DOE Office of Nuclear Energy’s HALEU Allocation Program in April 2025. The HALEU allocation is expected to provide a total supply of around 7.6 MTU which we estimate will be enough for our initial requirements for our first Xe-100 plant with Dow. Despite U.S. government initiatives designed to ensure initial HALEU quantities, including the establishment of the HALEU Availability Program to ensure access to HALEU for civilian domestic research, development, demonstration, and commercial use, the HALEU program is still in its early stages, and significant progress is required to achieve reliable and scalable production.
Previous wording
Government funding is subject to the political process, which is inherently unpredictable and can be highly competitive. The funding of government programs is dependent on budgetary limitations, congressional appropriations and administrative allotment of funds, all of which may be affected by changes in U.S. government policies resulting from various political developments, including efforts to negotiate an increase in, or suspension of, the debt ceiling. If an alternative commercial-scale supply of HALEU outside of Russia or China fails to materialize, including as a result of a lack of political support for the prioritization of the development of nuclear energy or otherwise, it may affect our ability to secure HALEU fuel in the future, which would materially adversely affect our business, financial condition, operating results and future prospects.
Current wording
Government funding is subject to the political process, which is inherently unpredictable and can be highly competitive. The funding of government programs is dependent on budgetary limitations, congressional appropriations and administrative allotment of funds, all of which may be affected by changes in U.S. government policies resulting from various political developments, including efforts to negotiate an increase in, or suspension of, the debt ceiling. If an alternative commercial-scale supply of HALEU outside of Russia or China fails to materialize, including as a result of a lack of political support for the prioritization of the development of nuclear energy or otherwise, it may affect our or our customers’ ability to secure HALEU fuel in the future, which would materially adversely affect our business, financial condition, operating results and future prospects.
Previous wording
Our initial ARDP plant deployment may consequently depend on HALEU feedstocks released by the U.S. government, which may initially be in the form of highly enriched uranium, or “HEU” (enriched above 20%), that will be down-blended to HALEU levels for use in our TX-1, TX-2, any subsequent fuel fabrication facilities and, ultimately, in ARDP reactors owned and operated by our partners. HEU can be processed to HALEU by only a limited number of licensed U.S. third parties. These third parties do not currently produce commercial levels of HALEU and may require regulatory approvals and process changes in order to produce the HALEU we require for the ARDP project. Our customers’ longer term fuel feedstock supply arrangements and subsequent fuel fabrication, whether related to X-energy’s TRISO-X fuel or other coated particle fuels we may manufacture for others, are likely to rely on commercial suppliers that do not yet produce and market HALEU, and which will also require NRC regulatory licenses in order to do so. Therefore, our customers’ ability to obtain adequate long term HALEU supplies for our reactors on a predictable schedule and at a predictable cost may be impaired, and activities like fuel loading, testing, and ultimate operation of our SMRs may be delayed, and our customers may be exposed to cost and schedule uncertainty, all of which may negatively affect the competitiveness of our SMRs.
Current wording
Our plant deployments depend on HALEU feedstocks released by the U.S. government or HALEU supplied by commercial suppliers for use in TX-1 and any subsequent fuel fabrication facilities and, ultimately, in reactors owned and operated by our partners. HALEU feedstocks from the U.S. government may initially be in the form of highly enriched uranium, or “HEU” (enriched above 20%), that will be down-blended to HALEU levels. HEU can be processed to HALEU by only a limited number of licensed U.S. third parties. These third parties do not currently produce commercial levels of HALEU and may require regulatory approvals and process changes in order to produce the HALEU we require. Our and our customers’ longer term fuel supply arrangements and subsequent fuel fabrication, whether related to X-energy’s TRISO-X fuel or other coated particle fuels we may manufacture for others, rely and are likely to continue to rely on commercial suppliers that do not yet produce and market HALEU, and which will require new or expanded production capacity and obtaining and maintaining NRC regulatory licenses in order to do so. There can be no assurance that any such supplier will secure or maintain the approvals it requires, complete any necessary development of its production capacity, or achieve commercial-scale production on the timeline we require or at all. Because the domestic enrichment industry is nascent, any supplier failure or delay could leave us unable to obtain replacement HALEU on comparable terms, on schedule, or at all. Therefore, our and our customers’ ability to obtain adequate long term HALEU supplies for our reactors on a predictable schedule and at a predictable cost may be impaired, and activities like fuel loading, testing, and ultimate operation of our SMRs may be delayed, and we and our customers may be exposed to cost and schedule uncertainty, all of which may materially adversely affect our fuel supply, our project timelines, our operations and the competitiveness of our SMRs. In certain circumstances, we have in the past and will in the future contract directly for HALEU with uranium enrichment companies on behalf of our customers to maintain development and delivery timelines. Although we would expect to pass the related costs through to customers, there is no assurance we will be able to do so, which could expose us to additional cost risk.
Previous wording
February 2026, we received a Special Nuclear Material License from the NRC that establishes TX-1 as the first-ever Category II nuclear fuel facility licensed in the United States, enabling TRISO-X to commercially manufacture fuel using HALEU at its TX-1 site under an initial 40-year license. We plan to construct TX-2 on the same site, which we believe will allow for the license to extend to both facilities. There is risk of relevant entities within the nuclear power industry being slow to make any required facility infrastructure modifications or to obtain, maintain or extend required licenses or approvals to enable such enrichment of HALEU fuel. Finally, there is a risk associated with possible negative public perception of uranium enrichment to greater than 5% that could potentially delay or hinder regulatory approval of our nuclear fuel designs. Should any of these events occur, our business would be materially adversely impacted.
Current wording
Any HALEU enrichment facility will need to secure NRC licenses to enrich uranium to HALEU levels. In February 2026, we received a Special Nuclear Material License from the NRC that establishes TX-1 as the first-ever Category II nuclear fuel facility licensed in the United States, enabling TRISO-X to commercially manufacture fuel using HALEU at its TX-1 site under an initial 40-year license. We plan to construct TX-2 on the same site, which will allow for the license to extend to both facilities. Any subsequent fuel fabrication facilities we build will require an NRC license to accept and fabricate HALEU into TRISO-X fuel. There is risk of relevant entities within the nuclear power industry being slow to make any required facility infrastructure modifications or to obtain, maintain or extend required licenses or approvals to enable such enrichment of HALEU fuel. Finally, there is a risk associated with possible negative public perception of uranium enrichment to greater than 5% that could potentially delay or hinder regulatory approval of our nuclear fuel designs. Should any of these events occur, our business would be materially adversely impacted.
Previous wording
Any actual or perceived safety issues at our facilities, those of our customers, or any nuclear facility around the world may result in significant reputational harm to our businesses; in addition, such safety issues at our or our customers’ facilities could result in enforcement proceedings brought by government regulators, tort liability, maintenance costs, increased safety infrastructure requirements and other costs that may arise. Such issues with our SMRs, facilities, or customer safety could result in delaying or canceling delivery of SMRs to our customers, increased regulation or other systemic consequences. Our inability to meet our safety standards or address adverse publicity affecting our reputation as a result of accidents, mechanical failures, damages to customer property or medical complications could have a material adverse effect on our business, financial condition and results of operation.
Current wording
Any actual or perceived safety issues at our facilities, those of our customers, or any nuclear facility around the world may result in significant reputational harm to our businesses; in addition, such safety issues at our or our customers’ facilities could result in enforcement proceedings brought by government regulators, tort liability, maintenance costs, increased safety infrastructure requirements and other costs that may arise. Such issues with our SMRs, facilities, or customer safety could result in delaying or canceling delivery of SMRs to our customers and decreased demand for our SMRs and fuel, increased regulation or other systemic consequences. Our inability to meet our safety standards or address adverse publicity affecting our reputation as a result of accidents, mechanical failures, damages to customer property or medical complications could have a material adverse effect on our business, financial condition and results of operation.
Previous wording
In the nuclear industry, an accident or incident involving the mishandling of nuclear materials at any nuclear facility in the world can have an impact on other nuclear facilities around the world in terms of public acceptance, political pressures, and regulatory requirements and scrutiny. For example, the March 2011 accident at the Fukushima Daiichi plant in Japan resulted in millions of dollars in additional regulatory reviews and requirements for U.S. nuclear power plants. As a result of the Fukushima accident, some countries that were considering launching new domestic nuclear power programs delayed or cancelled the preparatory activities they were planning to undertake as part of such programs. If a safety incident occurs at any nuclear facility in the world, it could delay licensing and/or drive up costs to license or own our SMRs and negatively impact our business or financial condition.
Current wording
In the nuclear industry, an accident or incident involving the mishandling of nuclear materials at any nuclear facility in the world can have an impact on other nuclear facilities around the world in terms of public acceptance, political pressures, and regulatory requirements and scrutiny. For example, the March 2011 accident at the Fukushima Daiichi plant in Japan resulted in millions of dollars in additional regulatory reviews and requirements for U.S. nuclear power plants. As a result of the Fukushima accident, some countries that were considering launching new domestic nuclear power programs delayed or cancelled the preparatory activities they were planning to undertake as part of such programs. If a safety incident occurs at any nuclear facility in the world, it could delay licensing and/or drive up costs to license or own our SMRs, adversely affect demand for our fuel, and negatively impact our business or financial condition.
Previous wording
We rely on a limited number of suppliers for certain materials and supplied components, some of which are highly specialized and are being designed for first-of-a-kind or sole use in the Xe-100. We and our third-party vendors may not be able to obtain sufficient materials or supplied components to meet our manufacturing and operating needs, or obtain such materials on favorable terms or at expected costs.
Current wording
We and our customers rely on a limited number of suppliers for certain materials and supplied components, some of which are highly specialized and are being designed for first-of-a-kind or sole use. We and our third-party vendors may not be able to obtain sufficient materials or supplied components to meet our and our customers’ manufacturing and operating needs, or obtain such materials or components in a timely manner or on favorable terms or at expected costs.
Previous wording
We rely on a limited number of suppliers for certain raw materials and supplied components. We may not be able to obtain sufficient raw materials or supplied components to meet our manufacturing and operating needs, or obtain such materials on favorable terms or at expected costs, which could impair our ability to fulfill our orders in a timely manner or increase our costs of production.
Current wording
We rely on a limited number of suppliers for certain materials and supplied components. We may not be able to obtain sufficient materials or supplied components to meet our or our customers’ manufacturing and operating needs, or obtain such materials in a timely manner or on favorable terms or at expected costs, which could impair our ability to fulfill our orders in a timely manner or increase our costs of production.
Previous wording
We do not directly manufacture any of the components of our SMRs. Our ability to manufacture our SMRs is dependent upon sufficient availability of raw materials and supplied components, including many highly technical components that are still under design, are being designed for first-of-a-kind or sole use in the Xe-100 and have not yet been qualified for use, are only produced by a limited number of suppliers and may be particularly susceptible to cost increases, supply chain disruptions or inflationary pressures. Any supply chain disruption incurred by our third party suppliers or degradation in the quality and processes of our manufacturer partners, may result in delays, cost overruns or impairments to the development of our reactors.
Current wording
We do not directly manufacture any of the components of our SMRs. Our ability to deliver our SMRs is dependent upon sufficient availability of raw materials and supplied components, including many highly technical components that are still under design, are being designed for first-of-a-kind or sole use in the Xe-100 and have not yet been qualified for use, are only produced by a limited number of suppliers and may be particularly susceptible to cost increases, supply chain disruptions or inflationary pressures. Any supply chain disruption incurred by our or our customers’ third party suppliers or degradation in the quality and processes of our or our customers’ manufacturer partners, may result in delays, cost overruns or impairments to the development of our reactors.
Previous wording
We are dependent on the ability of our supplier partners to scale their production output to meet the requirements of our forecast. If our supplier partners cannot increase their production capacity to meet the demand, it could result in delays in our ability to manufacture our reactors at the rates required.
Current wording
Certain materials, such as the graphite used to line our reactor cores, HALEU used in our TRISO-X fuel, and helium, which is used as a reactor coolant, are currently produced in limited quantities and currently available from a limited number of vendors, and, for certain materials, available production capacity is still developing. We are dependent on the ability of our supplier partners to scale their production output to meet the requirements of our forecast. If our supplier partners cannot establish or increase their production capacity or obtain and maintain necessary approvals to meet the demand, it could inhibit or result in delays in our ability to manufacture our reactors or TRISO-X fuel at the rates and in the time frames we require.
Showing the first 40 of 105 pairs. Open the source sections for the rest.
Rearranged current paragraphs (4)
Current report — wording carried from elsewhere
In addition to at least $500 million in funding appropriated in FY2020-FY2024, the Infrastructure Investment and Jobs Act (Public Law 11758) appropriated funds for the ARDP in total of $2.47 billion. Of ARDP funding to date, at least $1.1 billion has been allocated to X-energy’s award. Ongoing ARDP funding is provided to X-energy through Continuation Applications for each “budget period”, with the latest funding through at least March 2027. Congress has appropriated funding that was allocated towards X-energy’s award in a total of approximately $1.1 billion of the $1.2 billion commitment to support our ARDP award. In recent years, U.S. government appropriations have been affected by larger U.S. government budgetary issues and related legislation. As of June 30, 2026, we have been reimbursed approximately $546.7 million in funding under the ARDP.
Current report — wording carried from elsewhere
the results of our fuel qualification program, including ongoing fuel irradiation testing at the Idaho National Lab test facility;
Current report — wording carried from elsewhere
Public utilities and their holding companies are subject to FERC reporting requirements that impose administrative burdens and that can expose a public utility to criminal and civil penalties for failure to comply with such requirements. Our projects will also likely be subject to certain reliability standards overseen by the North American Electric Reliability Corporation (“NERC”). Failure to comply with NERC reliability standards could lead to sanctions, including substantial monetary penalties.
Current report — wording carried from elsewhere
We are required to make such payments to the TRA Holders even if all of the TRA Holders were to exchange or redeem their remaining Common Units. “Interest Deductions” means deductions attributable to imputed interest and other payments of interest by X-Energy, Inc. pursuant to the Tax Receivable Agreement.
Rearranged previous paragraphs (6)
Previous report — wording carried elsewhere
Although we expect nearly all of the cost to construct the Xe-100 is or will be borne by our customers, such costs incurred by our customers could significantly exceed their and our expectations, including for reasons outside of their and our control, which could make existing or prospective customers less likely to contract with us and use our SMR design in the future, which could have a material adverse effect on our business, results of operations and financial prospects.
Previous report — wording carried elsewhere
the results of our research and product development efforts;
Previous report — wording carried elsewhere
Any HALEU enrichment facility will need to secure NRC licenses to enrich uranium to HALEU levels, and our TX-1, TX-2 and any subsequent fuel fabrication facilities will require an NRC license to accept and fabricate HALEU into TRISO-X fuel. In
Previous report — wording carried elsewhere
Moreover, a major shipping accident could have a severe, negative impact on the delivery schedule and cost of our early projects, such as in the case of key components being lost at sea due to severe weather.
Previous report — wording carried elsewhere
If we fail to achieve, or experience delays in achieving, announced milestones or timelines, our reputation, customer relationships, strategic partnerships and market credibility could be harmed, and the market price of our Class A common stock could be adversely affected.
Previous report — wording carried elsewhere
X-Energy, Inc. used proceeds from the IPO to purchase Common Units from XERC. There has been no material change in the planned use of proceeds by XERC from the IPO as described in the final prospectus filed with the SEC on April 27, 2026.