XML 24 R8.htm IDEA: XBRL DOCUMENT
v3.25.1

Organization and Description of Business | 12 Months Ended
--- | ---
Dec. 31, 2024
Organization and Description of Business |
Organization and Description of Business | Note 1 – Organization and Description of Business ClearSign Technologies Corporation (“ClearSign” or the “Company”) designs and develops products and technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial systems, including operational performance, energy efficiency, emission reduction, safety, and overall cost-effectiveness. The Company’s patented technologies are designed to be embedded in established original equipment manufacturers (“OEM”) products as ClearSign Core™ and ClearSign Eye and other sensing configurations in order to enhance the performance of combustion systems and fuel safety systems in a broad range of markets. These markets include energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries. The Company’s primary technology is its ClearSign Core™ technology, which achieves very low emissions without the need of selective catalytic reduction. The Company was originally incorporated in the State of Washington in 2008. During January 2022, the Company relocated its headquarters from Seattle, Washington to Tulsa, Oklahoma. Effective June 15, 2023, the Company changed its state of incorporation to Delaware. On July 28, 2017, the Company incorporated a subsidiary, ClearSign Asia Limited, in Hong Kong to represent the Company’s business and technological interests throughout Asia. Through ClearSign Asia Limited, the Company has established a wholly foreign owned enterprise (“WFOE”) in China – ClearSign Combustion (Beijing) Environmental Technologies Co., LTD. On August 22, 2024, the Company’s Board of Directors (the “Board”) authorized management to move forward with filing for dormancy with Chinese regulators to suspend the Company’s Beijing, China operations. A dormancy filing allows the Company to keep its China legal entity in a suspended status for up to three years. The Company can revive its China operations at any time during those three years with minimal cost impact. The effective date of our dormancy filing was March 12, 2025. Unless otherwise stated or the context otherwise requires, the terms “we,” “us,” “our,” “ClearSign” and the “Company” refer to ClearSign Technologies Corporation and its subsidiary, ClearSign Asia Limited. Business Segments The Company operates in one operating and reportable segment engaged in the design, development and sale of combustion technologies that improve the performance and cost-effectiveness of industrial combustion systems, referred to herein as the “Combustion” segment. The Company manages its business activities on a consolidated basis. Since the operations comprise a single reportable segment, amounts reported in the consolidated balance sheets, statements of operations and comprehensive loss, stockholders’ equity, and cash flows represent the activities of the Combustion segment. ​ The Combustion segment derives revenues by delivering products and technology solutions to OEM’s and end-users. Our products and solutions can be incorporated into a new or existing customer infrastructure or equipment. Customer contracts can include multiple billing milestones and performance obligations. The Company can typically satisfy its performance obligations within a twelve month period, but customer project delays, some of which can be beyond the Company’s control, can impact timing of performance and there is no assurance we will satisfy all performance obligations in such period of time. ​ The Company’s Chief Executive Officer, who is the chief operating decision maker (“CODM”), reviews quarterly financial information on a consolidated basis for making operating decisions, allocating resources and evaluating financial performance. The CODM consistently reviews the consolidated statements of operations and comprehensive loss to manage operations and monitor performance against management expectations. Factors considered by the CODM when assessing a reportable segment include factors such as, but not limited to, human capital, intellectual property, customer relationships and business model design. ​ Substantially all the Company’s operating activities, including its long-lived assets, are located within the United States. Customers in the United States accounted for 100% of revenues during the years ended December 31, 2024 and 2023. The Company disaggregates geographical revenues by selling location, since many of our target customers are global entities, and it would be more likely than not, that these customers would negotiate sales within our current territory in the United States. Our two California refinery customers accounted for 86% and 87% of our annual revenues for the years ended December 31, 2024 and 2023, respectively. No other customer represented greater than ten percent of annual revenues for the years ended December 31, 2024 and 2023. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended
​ | ​ | December 31,
​ | ​ | 2024 |  | 2023
Customer A | ​ | 59 | % | ​ | 28 | %
Customer B | ​ | 27 | ​ | ​ | 59 | ​
​ | ​ | 86 | % | ​ | 87 | %
​ Liquidity As of December 31, 2024, the Company’s cash and cash equivalents totaled $14,035 thousand, which is sufficient to fund current operating expenses beyond twelve months from the date of issuance of these consolidated financial statements. The Company’s technologies are currently deployed in fully operational commercial installations. In order to generate meaningful revenues and achieve cash flow break-even, we must continue to gain market recognition and acceptance and achieve a critical level of successful sales and product installations. Historically, the Company has financed operations primarily through issuances of equity securities. Since inception, the Company has raised approximately $105.3 million in gross proceeds through the sale of its equity securities. During the year ended December 31, 2024, the Company sold equity securities on April 23, 2024, May 15, 2024, and June 24, 2024, which resulted in aggregate gross proceeds of approximately $14.2 million and net proceeds of approximately $13.0 million, after broker discounts and related fees. Refer to “Note 8 – Equity” for further details about the offerings effectuated during the year ended December 31, 2024. ​ The Company has incurred losses since its inception totaling $99.0 million and expects to experience operating losses and negative cash flows for the foreseeable future. Management believes that the successful growth and operation of the Company’s business is dependent upon its ability to obtain adequate sources of funding through co-development agreements, strategic partnering agreements, or equity or debt financing to adequately support product commercialization efforts, protect intellectual property, form relationships with strategic partners, and provide for working capital and general corporate purposes. There can be no assurance that the Company will be successful in achieving its long-term plans as set forth above, or that such plans, if consummated, will result in profitable operations or enable the Company to continue in the long-term as a going concern.

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for the general note to the financial statements for the reporting entity which may include, descriptions of the basis of presentation, business description, significant accounting policies, consolidations, reclassifications, new pronouncements not yet adopted and changes in accounting principles. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 235 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/235/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 275 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/275/tableOfContent Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 810 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/810/tableOfContent Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 250 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/250/tableOfContent + Details
Name: | us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration