What the changes say
- Substantial doubt about continuing as a going concern dominates the risks, driven by low cash of $22.0 million at December 31, 2025.
What changed since the prior 10-K
New
- NewRisks Related to Our Business and Industry
There is substantial doubt about our ability to continue as a “going concern”
We reported $22.0 million in cash and cash equivalents and short-term investments as of December 31, 2025, raising substantial doubt about our ability to continue as a going concern.
- NewRisks Related to Our Business and Industry
Significant changes to our leadership team and the resulting management transitions might harm our future operating results
Recent changes in our leadership team may cause operational inefficiencies, loss of institutional knowledge, and increased vulnerability to competitors.
- NewRisks Related to Our Business and Industry
If we fail to maintain effective control over financial reporting, our ability to accurately and timely report our financial results could be adversely affected
Furloughs impacting our accounting department make identifying and remediating material weaknesses in our internal control over financial reporting more challenging.
- NewRisks Related to Regulatory, Environmental and Legal Issues
government may gain rights to the intellectual property developed in our related research. The government’s rights in our intellectual property may lessen its commercial value, which could adversely affect our performance
Government entities utilizing our research may retain royalty-free rights to practice inventions if we fail to comply with grant requirements.
- NewRisks Related to Regulatory, Environmental and Legal Issues
Also, the IRA introduced a new non-deductible excise tax of 1% on certain net share repurchases by corporations. This 1% excise tax will generally apply to any repurchase of stock we undertake, net of shares issued by us in the same taxable year, which may increase the costs to us of any share repurchases
The Inflation Reduction Act introduced a 1% excise tax on net share repurchases, increasing stock buyback costs.
- NewRisks Related to Our Common Stock and Warrants
A sale of a significant portion of our total outstanding shares into the market may cause the market price of our common stock to drop significantly, even if our business is doing well
Sales of common stock through an ATM offering could depress our stock price depending on our liquidity needs and share volume.
- NewRisks Related to Our Common Stock and Warrants
We have warrants outstanding that are exercisable for our common stock, which, if exercised, would increase the number of shares eligible for future resale in the public market and result in dilution to our stockholders
We have 11,461,227 public warrants exercisable at $172.50, plus warrants issued to SMUD, Honeywell Ventures, and UOP, which will dilute stockholders.
- NewRisks Related to Our Common Stock and Warrants
of any such fees and prior to the completion of our Plan Period, we will be subject to NYSE’s prompt initiation of suspension and delisting procedures
If the NYSE delists our common stock, we face severe liquidity constraints, limited market quotations, and penny stock restrictions.
Dropped
- DroppedRisks Related to Our Technology, Products and Manufacturing
our supply or delivery chain and shipments could harm our ability to manufacture, supply and commercialize our energy storage products
Dependence on third-party suppliers for raw materials and components.
- DroppedRisks Related to Our Business and Industry
The report of our independent registered public accounting firm includes a “going concern” explanatory paragraph
- DroppedRisks Related to Our Business and Industry
Our warranty insurance provided by Munich Re is important to many potential customers. Should we be unable to maintain our relationship with Munich Re and be unable to find a similar replacement, demand for our products may suffer
- DroppedRisks Related to Our Business and Industry
equipment installation, which has caused, and in the future may continue to cause, delays with respect to delivery and installation and potentially our ability to recognize revenue. This could have an adverse impact on our revenue and cash flow and our ability to complete construction of a project
- DroppedRisks Related to Our Business and Industry
fluctuations in the value of foreign currencies and difficulties and increased expenses in complying with United States and foreign laws, regulations and trade standards, including the Foreign Corrupt Practices Act of 1977, as amended (the “FCPA”)
- DroppedRisks Related to Our Business and Industry
Our business and operations may be adversely affected by outbreaks of contagious diseases and other adverse public health developments
- DroppedRisks Related to Our Business and Industry
diversion of our personnel from our operational efforts, and increases in customer service and support costs, all of which could have a material adverse effect on our business, financial condition, and results of operations
- DroppedRisks Related to Our Business and Industry
in response to Western sanctions could include cyber attacks that could disrupt the economy more generally or that could also impact our operations directly or indirectly
- DroppedRisks Related to Our Business and Industry
lengthy interruptions in our service and may adversely affect our business, prospects, financial condition and operating results
- DroppedRisks Related to Our Business and Industry
and execution of a commercial or financial transaction may lead to similar disruptions, and parties advocating for alternatives not selected may solicit support for such other alternatives, causing further disruption
- DroppedRisks Related to Regulatory, Environmental and Legal Issues
“smaller reporting companies,” this could make our securities less attractive to investors and may make it more difficult to compare our performance with other public companies
Prior going concern disclosure based on $31.6 million cash at December 31, 2024.
- DroppedRisks Related to Our Common Stock and Warrants
Sales of a substantial number of shares of our common stock in the public market could occur at any time. These sales, or the perception in the market that the holders of a large number of shares intend to sell shares, could reduce the market price of our common stock
- DroppedRisks Related to Our Common Stock and Warrants
As of December 31, 2024, we had outstanding 11,461,227 Public Warrants to purchase an aggregate of 764,081 shares of our common stock. Each fifteen Public Warrants are exercisable for one share of common stock at an exercise price of $172.50 per share
Reliance on bespoke warranty insurance provided by Munich Re.
- DroppedRisks Related to Our Common Stock and Warrants
weighted average price of the Company’s common stock for the last fifteen (15) trading days of the relevant calendar year for which such additional Performance Warrant is being issued
- DroppedRisks Related to Our Common Stock and Warrants
The ultimate effect of the 1-for-15 reverse stock split on the market price of our common stock cannot be predicted with any certainty and shares of our common stock have likely experienced decreased liquidity as a result of such reverse stock split
Reworded
- 79% rewrittenRisks Related to Our Business and Industry
Our review of commercial and strategic transactions may be disruptive to our business and may not be successful
Updated to clarify that advocating parties for unselected alternatives may cause ongoing business disruptions.
- 78% rewrittenRisks Related to Our Common Stock and Warrants
There can be no assurance that we will be able to continue to satisfy the continued listing standards of the NYSE
Added the defined term 'Minimum Market Capitalization Standard' regarding NYSE listing requirements.
- 70% rewrittenRisks Related to Our Business and Industry
Third parties might attempt to gain unauthorized access to our network or seek to compromise our products and services
Added that we have already experienced attempts by hackers to gain unauthorized access to our network.
- 59% rewrittenRisks Related to Our Business and Industry
Changes in the global trade environment, including the imposition or escalation of import tariffs, could adversely affect the amount or timing of our revenues, results of operations or cash flows
Replaced general China tariff references with specific Section 301 tariffs, fentanyl-related tariffs, and reciprocal tariffs implemented through February 2026.
- 55% rewrittenRisks Related to Regulatory, Environmental and Legal Issues
Changes in tax laws or in their implementation or interpretation may adversely affect our business and financial condition
Inserted the abbreviation 'TCJA' for the Tax Cuts and Jobs Act of 2017.
- 51% rewrittenRisks Related to Regulatory, Environmental and Legal Issues
The reduction, elimination or expiration of government tax credits, subsidies and economic incentives related to renewable energy solutions could reduce demand for our technology and harm our business
Retained existing text without substantive changes regarding government renewable energy incentives.
- 51% rewrittenRisks Related to Regulatory, Environmental and Legal Issues
Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited
Updated U.S. federal and state net operating loss carryforwards figures to $334.7 million and $341.9 million as of December 31, 2025.
- 50% rewrittenRisks Related to Our Business and Industry
The failure or breach of our IT systems could affect our sales and operations
Added vulnerabilities related to the integration of artificial intelligence into IT systems.
- 45% rewrittenRisks Related to Our Common Stock and Warrants
These market and industry factors may materially reduce the market price of our common stock regardless of our operating performance and such impact may be exacerbated during periods of greater economic and market volatility
Was: These market and industry factors may materially reduce the market price of our common stock regardless of our operating performance
- 45% rewrittenRisks Related to Raising Capital
We will need to raise additional capital in the near future, and it may not be available on acceptable terms, if at all
- 36% rewrittenRisks Related to Our Business and Industry
The execution of our strategy to expand into new markets through strategic partnerships, joint ventures and licensing arrangements is in a very early stage and is also subject to various risks which could adversely affect our business and future prospects
- 33% rewrittenRisks Related to Our Business and Industry
Our project awards and sales pipeline may not convert to contracts or may be delayed, which may have a material adverse effect on our revenue and cash flows
- 32% rewrittenRisks Related to Our Technology, Products and Manufacturing
If required maintenance is performed incorrectly or if maintenance requirements exceed our current expectations, this could adversely affect our reputation, prospects, business, financial condition and results of operations
- 31% rewrittenRisks Related to Our Business and Industry
The loss of one or more members of our senior management team and other key personnel or our failure to attract and retain qualified personnel may adversely affect our business and our ability to achieve our anticipated level of growth
- 31% rewrittenRisks Related to Our Business and Industry
We have a history of losses and have to deliver significant business growth to achieve sustained, long-term profitability and long-term commercial success
- 30% rewrittenRisks Related to Regulatory, Environmental and Legal Issues
We are subject to certain restrictions and obligations on our business as a result of grants and/or loans received under certain governmental programs and we may be subject to similar or other restrictions to the extent we utilize governmental grants in the future
- 30% rewrittenRisks Related to Our Business and Industry
Our facilities or operations could be damaged or adversely affected as a result of natural disasters and other catastrophic events
- 29% rewrittenRisks Related to Regulatory, Environmental and Legal Issues
We are subject to requirements relating to environmental and safety regulations and environmental remediation matters which could adversely affect our business, results of operation and reputation
- 24% rewrittenRisks Related to Our Common Stock and Warrants
The price of our common stock may be volatile
- 24% rewrittenRisks Related to Raising Capital
Our debt service obligations may adversely affect our financial condition and cash flows from operations
- 24% rewrittenRisks Related to Our Business and Industry
We currently are and in the foreseeable future will be significantly dependent on a limited number of products
- 20% rewrittenRisks Related to Our Business and Industry
Our planned expansion into new geographic markets or new product lines or services could subject us to additional business, financial, and competitive risks
All 76 risk factors
Headings as the filing states them, in filing order.
Risks Related to Our Technology, Products and Manufacturing
- 01We do not know whether we will be able to maintain long-term supply relationships with our critical suppliers, or, if required, secure new long-term supply relationships on terms that will allow us to achieve our objectives
- 02We have experienced in the past, and may experience in the future, delays, disruptions, or quality control problems in our manufacturing operations
- 03We may be unable to adequately control the costs associated with our operations and the components necessary to build our energy storage products, and if we are unable to reduce our cost structure and effectively scale our operations in the future, our ability to become profitable may be impaired
- 04Our cost reduction strategy may not succeed or may be significantly delayed, which may result in our inability to achieve profitability
- 05We rely on complex machinery for our operations and the production of our iron flow batteries involves a significant degree of risk and uncertainty in terms of operational performance and costs
- 06We have in the past and may be compelled in the future to undertake product recalls or take other actions, which could adversely affect our business, prospects, operating results, reputation and financial condition
- 07If required maintenance is performed incorrectly or if maintenance requirements exceed our current expectations, this could adversely affect our reputation, prospects, business, financial condition and results of operations32% rewritten
Risks Related to Our Business and Industry
- 08Our expectations for future operating and financial results and market growth rely in large part upon assumptions and analyses developed by us. If these assumptions or analyses prove to be incorrect, our actual operating results may be materially different from our anticipated results
- 09We have a history of losses and have to deliver significant business growth to achieve sustained, long-term profitability and long-term commercial success31% rewritten
- 10There is substantial doubt about our ability to continue as a “going concern”New
- 11There is no assurance nonbinding pre-orders or framework agreements will be converted into binding orders or that orders will be completed
- 12Failure to deliver the benefits offered by our technology, or the emergence of improvements to competing technologies, could reduce demand for our energy storage products and harm our business
- 13Our plans are dependent on the development of market acceptance of our products and long duration energy storage technology
- 14Our future growth and success depend on our ability to sell effectively to large customers
- 15Our project awards and sales pipeline may not convert to contracts or may be delayed, which may have a material adverse effect on our revenue and cash flows33% rewritten
- 16Our contracted sales are subject to the risk of termination by the contracting party
- 17If we fail to manage our growth effectively, we may be unable to execute our business plan, maintain high levels of customer service, or adequately address competitive challenges
- 18We have signed product sales contracts and have entered into service agreements with customers. If we do not meet the obligations under these agreements or if our estimates of the projected useful life of our energy storage products are inaccurate, our business and financial results could be adversely affected
- 19Our ability to proceed with projects under development and complete construction of projects on schedule and within budget are subject to contractual, technology, operating and commodity risks as well as market conditions that may affect our operating results
- 20We invest significantly in research and development, and to the extent our research and development investments are not directed efficiently or do not result in material enhancements to our products and technologies, our business and results of operations would be harmed
- 21The loss of one or more members of our senior management team and other key personnel or our failure to attract and retain qualified personnel may adversely affect our business and our ability to achieve our anticipated level of growth31% rewritten
- 22Significant changes to our leadership team and the resulting management transitions might harm our future operating resultsNew
- 23Our results of operations may fluctuate from quarter to quarter, which could make our future performance difficult to predict and could cause our results of operations for a particular period to fall below expectations, resulting in a decline in the price of our common stock
- 24We currently are and in the foreseeable future will be significantly dependent on a limited number of products24% rewritten
- 25Our planned expansion into new geographic markets or new product lines or services could subject us to additional business, financial, and competitive risks20% rewritten
- 26If we fail to maintain effective control over financial reporting, our ability to accurately and timely report our financial results could be adversely affectedNew
- 27Defects or performance problems in our products could result in loss of customers, reputational damage, and decreased revenue, and we may face warranty, indemnity, and product liability claims that may arise from defective products
- 28Third parties might attempt to gain unauthorized access to our network or seek to compromise our products and services70% rewritten
- 29The failure or breach of our IT systems could affect our sales and operations50% rewritten
- 30We may not be able to identify or complete transactions with attractive acquisition candidates. Future acquisitions may result in significant transaction expenses and we may incur significant costs
- 31Our facilities or operations could be damaged or adversely affected as a result of natural disasters and other catastrophic events30% rewritten
- 32We may not have sufficient insurance coverage to cover business continuity
- 33Changes in the global trade environment, including the imposition or escalation of import tariffs, could adversely affect the amount or timing of our revenues, results of operations or cash flows59% rewritten
- 34We could be subject to foreign exchange risk
- 35We may be required to take write-downs or write-offs, restructuring and impairment or other charges that could have a significant negative effect on our financial condition, results of operations and stock price, which could cause you to lose some or all of your investment
- 36Our results of operations could vary as a result of changes to our accounting policies or the methods, estimates and judgments we use in applying our accounting policies
- 37The requirements of being a public company may strain our resources and divert management’s attention
- 38We may engage in transactions with related parties and such transactions present possible conflicts of interest that could have an adverse effect on us
- 39The execution of our strategy to expand into new markets through strategic partnerships, joint ventures and licensing arrangements is in a very early stage and is also subject to various risks which could adversely affect our business and future prospects36% rewritten
- 40Our review of commercial and strategic transactions may be disruptive to our business and may not be successful79% rewritten
Risks Related to Regulatory, Environmental and Legal Issues
- 41We may face regulatory challenges to or limitations on our ability to sell our products directly in certain markets. Expanding operations internationally could expose us to additional risks
- 42Our customers may be required to obtain environmental, health and safety or other certifications in order to install our products. If our customers are unable to obtain the necessary certifications, we will not be able to install our products, which would negatively impact our revenues
- 43We are subject to requirements relating to environmental and safety regulations and environmental remediation matters which could adversely affect our business, results of operation and reputation29% rewritten
- 44Our manufacturing process involves hazards such as but not limited to hazardous materials, machines with moving parts, and high voltage and/or high current electrical systems typical of large manufacturing equipment and related safety incidents
- 45We may be exposed to delays, limitations and risks related to the environmental permits and other operating permits required to operate our products
- 46We may collect and process certain information about our customers and about individuals and will be subject to various laws and regulations relating to privacy, data protection and cybersecurity
- 47We could be subject to penalties and other adverse consequences for any violations of the FCPA, and other foreign anti-bribery and anti-corruption laws
- 48We are subject to governmental export and import controls and economic sanctions programs that could impair our ability to compete in international markets or subject us to liability if we violate these controls
- 49We may be exposed to various risks related to legal proceedings or claims that could adversely affect our operating results. The nature of our business exposes us to various liability claims, which may exceed the level of our insurance coverage resulting in our not being fully protected
- 50We are subject to certain restrictions and obligations on our business as a result of grants and/or loans received under certain governmental programs and we may be subject to similar or other restrictions to the extent we utilize governmental grants in the future30% rewritten
- 51government may gain rights to the intellectual property developed in our related research. The government’s rights in our intellectual property may lessen its commercial value, which could adversely affect our performanceNew
- 52The reduction, elimination or expiration of government tax credits, subsidies and economic incentives related to renewable energy solutions could reduce demand for our technology and harm our business51% rewritten
- 53Changes in tax laws or in their implementation or interpretation may adversely affect our business and financial condition55% rewritten
- 54Also, the IRA introduced a new non-deductible excise tax of 1% on certain net share repurchases by corporations. This 1% excise tax will generally apply to any repurchase of stock we undertake, net of shares issued by us in the same taxable year, which may increase the costs to us of any share repurchasesNew
- 55Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited51% rewritten
Risks Related to Our Intellectual Property
- 56If we fail to protect, or incur significant costs in defending, our intellectual property and other proprietary rights, then our business and results of operations could be materially harmed
- 57Third parties may assert that we are infringing upon their intellectual property rights, which could divert management’s attention, cause us to incur significant costs, and prevent us from selling or using the technology to which such rights relate
- 58Our patent applications may not result in issued patents or our patent rights may be contested, circumvented, invalidated or limited in scope, any of which could have a material adverse effect on our ability to prevent others from interfering with the commercialization of our products
- 59Our products contain third-party open-source software components, and failure to comply with the terms of the underlying open source software licenses could restrict our ability to sell our products or our use of those components give rise to disclosure obligations of proprietary software
Risks Related to Raising Capital
- 60As we endeavor to expand our business, we will incur significant costs and expenses, which could outpace our cash reserves. Unfavorable conditions or disruptions in the capital and credit markets may adversely impact business conditions and the availability of credit
- 61We will need to raise additional capital in the near future, and it may not be available on acceptable terms, if at all45% rewritten
- 62Our debt service obligations may adversely affect our financial condition and cash flows from operations24% rewritten
Risks Related to Our Common Stock and Warrants
- 63The price of our common stock may be volatile24% rewritten
- 64These market and industry factors may materially reduce the market price of our common stock regardless of our operating performance and such impact may be exacerbated during periods of greater economic and market volatility45% rewritten
- 65A sale of a significant portion of our total outstanding shares into the market may cause the market price of our common stock to drop significantly, even if our business is doing wellNew
- 66We have warrants outstanding that are exercisable for our common stock, which, if exercised, would increase the number of shares eligible for future resale in the public market and result in dilution to our stockholdersNew
- 67The terms of our warrants may be amended from time to time
- 68We may redeem your unexpired warrants prior to their exercise at a time that is disadvantageous to you, thereby making your warrants worthless
- 69We do not expect to declare any dividends in the foreseeable future
- 70There can be no assurance that we will be able to continue to satisfy the continued listing standards of the NYSE78% rewritten
- 71of any such fees and prior to the completion of our Plan Period, we will be subject to NYSE’s prompt initiation of suspension and delisting proceduresNew
- 72Reports published by analysts, including projections in those reports that differ from our actual results, could adversely affect the price and trading volume of our common stock
- 73We may be subject to short selling strategies that may drive down the market price of our common stock
- 74Provisions in our amended and restated certificate of incorporation, as amended, and amended and restated bylaws and Delaware law might discourage, delay or prevent a change in control of the Company or changes in management and, therefore, depress the market price of our common stock
- 75This provision would not apply to suits brought to enforce a duty or liability created by the Securities Act, the Exchange Act or any other claim for which the U.S. federal courts have exclusive jurisdiction
- 76Our Charter and amended and restated bylaws provide that we will indemnify our directors and officers, in each case to the fullest extent permitted by Delaware law
Other ESS Tech 10-Ks
- FY2024 10-K risk factors83 risks
The company relies heavily on a going concern warning with $782.4 million in accumulated deficit as of December 31, 2024. Manufacturing scale-up depends on complex machinery and limited critical suppliers for iron flow batteries. Warranty insurance through Munich Re and customer adoption of long duration energy storage are essential.
Filed Mar 31, 2025
About this page
The headings are the filing's own. The one-line readings and the overview are automated and can be wrong: read Item 1A of the 10-K for the exact wording.