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Organization and Basis of Presentation | 6 Months Ended
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Jun. 30, 2025
Accounting Policies [Abstract] |
Organization and Basis of Presentation | Organization and Basis of Presentation Arq, Inc., together with its consolidated subsidiaries ("Arq" or the "Company"), is an environmental technology company that is principally engaged in the sale of consumable air, water, and soil treatment solutions, primarily based on activated carbon ("AC"). The Company's proprietary AC products enable customers to reduce air, water, and soil contaminants, including mercury, per and polyfluoroalkyl substances ("PFAS") and other pollutants, to meet the challenges of existing and pending air quality and water regulations. The Company manufactures and sells AC and other chemicals used to capture and remove impurities, contaminants, and pollutants for the coal-fired power generation, industrial, water treatment, and water and soil remediation markets, which are collectively referred to as the advanced purification technologies ("APT") market. The Company’s primary products are comprised of AC, which is produced from a variety of carbonaceous raw materials. The Company’s AC products include powdered activated carbon ("PAC") and granular activated carbon ("GAC"). Additionally, the Company owns the Five Forks Mine, a lignite coal mine located in Saline, Louisiana, that currently supplies the primary raw material for the manufacturing of the Company’s products, and bituminous coal feedstock and a manufacturing facility located in Corbin, Kentucky (the "Corbin Facility"). The Company, formerly known as Advanced Emissions Solutions, Inc., is a Delaware corporation with its principal office located in Greenwood Village, Colorado, with manufacturing, mining and logistics operations located in Louisiana and coal recovery and manufacturing operations located in Kentucky. Basis of Presentation The accompanying Condensed Consolidated Financial Statements of Arq are unaudited and have been prepared in conformity with accounting principles generally accepted in the United States ("U.S. GAAP") and with Article 10 of Regulation S-X of the Securities and Exchange Commission. In compliance with those instructions, certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The unaudited Condensed Consolidated Financial Statements of Arq in this Quarterly Report on Form 10-Q ("Quarterly Report") are presented on a consolidated basis and include Arq and its wholly-owned subsidiaries. Also included within the unaudited Condensed Consolidated Financial Statements are the Company's unconsolidated equity investments, Tinuum Group, which is accounted for under the equity method of accounting, and Highview Enterprises Limited (the "Highview Investment"), which is accounted for in accordance with U.S. GAAP applicable to equity investments that do not qualify for the equity method of accounting. Results of operations and cash flows for the interim periods are not necessarily indicative of the results that may be expected for the entire year. All significant intercompany transactions and accounts were eliminated in consolidation for all periods presented in this Quarterly Report. In the opinion of management, these Condensed Consolidated Financial Statements include all normal and recurring adjustments considered necessary for a fair presentation of the results of operations, financial position, stockholders' equity and cash flows for the interim periods presented. These Condensed Consolidated Financial Statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (the "2024 Form 10-K"). Significant accounting policies disclosed therein have not changed. Loss Per Share Basic loss per share is computed using the weighted-average number of shares of the Company's common stock outstanding during the reporting period. Diluted loss per share is computed in a manner consistent with that of basic loss per share, while considering the impact of common stock equivalents from other potentially dilutive securities. For the three and six months ended June 30, 2025 and June 30, 2024, potentially dilutive securities consist of unvested restricted stock awards ("RSAs"), stock options, and contingent performance stock units ("PSUs"). The following table sets forth the calculations of basic and diluted loss per share:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands, except per share amounts) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Net loss |  | $ | (2,133) |  |  | $ | (1,968) |  |  | $ | (1,930) |  |  | $ | (5,387) |
Basic weighted-average number of common shares outstanding |  | 41,507 |  |  | 34,356 |  |  | 41,415 |  |  | 33,229 |
Add: dilutive effect of equity instruments |  | — |  |  | — |  |  | — |  |  | — |
Diluted weighted-average shares outstanding |  | 41,507 |  |  | 34,356 |  |  | 41,415 |  |  | 33,229 |
Loss per share - basic |  | $ | (0.05) |  |  | $ | (0.06) |  |  | $ | (0.05) |  |  | $ | (0.16) |
Loss per share - diluted |  | $ | (0.05) |  |  | $ | (0.06) |  |  | $ | (0.05) |  |  | $ | (0.16) |
For the three and six months ended June 30, 2025 and 2024, potentially dilutive securities of 2.6 million and 2.3 million and 2.5 million and 2.5 million shares of common stock, respectively, are outstanding but are not included in the calculation of diluted net loss per share because the effect would be anti-dilutive. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. There have been no changes in the Company's critical accounting estimates from those that were disclosed in the 2024 Form 10-K. Actual results could differ from these estimates. Fair value measurements The carrying amounts of the Company's cash, restricted cash, accounts receivable, accounts payable and other current liabilities approximate fair value as recorded due to the short-term nature of these instruments. Seasonality The timing of the sale of the Company's products is dependent upon several factors. Power generation is weather dependent, with electricity and steam production varying in response to heating and cooling demands. As a result, the Company's revenue is generally higher in the first and third fiscal quarters during the warmer and colder months of the year. Abnormally high and low temperatures during the summer and winter months, respectively, may significantly increase coal consumption for electricity generation and during the summer season, higher temperatures may cause increased impurities within various municipalities' water sources and thus increase the demand for the Company's products. Additionally, power generating units routinely schedule maintenance outages in the spring and/or fall depending on the operation of their boilers. During the period in which an outage may occur, which may range from one week to over a month, the Company's product sales may decrease. Also, the Company's revenue and sales volumes are partially dependent upon the level of coal consumption at coal-fired power plants, which in turn is significantly affected by the prices of competing power generation sources, such as natural gas and renewables. During periods of low natural gas prices, natural gas provides a competitive alternative to coal-fired power generation and therefore, coal consumption for power generation may be reduced, which in turn reduces the demand for the Company's products. In contrast, during periods of higher prices for competing power generation sources, coal consumption generally increases, which generally increases demand for the Company's products. Demand for the Company's water purification products is driven largely from municipal water treatment facilities. Depending on weather conditions and other environmental factors, the summer months historically have the highest demand for the Company's products used in water treatment. One of the major uses for PAC is for the treatment of taste and odor impurities caused by increased degradation of organic contaminants and natural materials in water that occurs predominately during the summer months. Additionally, the rainy season generally results in more demand from water municipalities due to rain run-off and increased contaminated water volume. New Accounting Standards In December 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ("ASU 2023-09"). ASU 2023-09 requires entities to disclose: (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) the disaggregation of income taxes paid by jurisdiction. This update also makes several other changes to the income tax disclosure requirements. For public entities, the amendments in ASU 2023-09 are effective for fiscal years beginning after December 15, 2024, with early adoption permitted, and are required to be applied prospectively, but retrospective application is permitted. The Company is currently evaluating the impact of ASU 2023-09 on its financial statement disclosures. In November 2024, the FASB issued Accounting Standards Update 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses ("ASU 2024-03"). ASU 2024-03 requires entities to disclose disaggregated information related to certain costs and expenses, including amounts relating to purchases of inventory, employee compensation, depreciation, intangible asset amortization and depletion, for each income statement line item that contains those expenses. For public entities, the amendments in ASU 2024-03 are effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. ASU 2024-03 is required to be applied prospectively, but retrospective application is permitted. The Company is currently evaluating the impact of ASU 2024-03 on its financial statement disclosures. In July 2025, the FASB issued Accounting Standards Update 2025-05, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets ("ASU 2025-05"). ASU 2025-05 provides a practical expedient that all entities can use when estimating expected credit losses for current accounts receivable and current contract assets arising from transactions accounted for under ASC 606, Revenue from Contracts with Customers. Under this practical expedient, an entity is allowed to assume that the current conditions it has applied in determining credit loss allowances for current accounts receivable and current contract assets remain unchanged for the remaining life of those assets. ASU 2025-05 is effective for fiscal years beginning after December 15, 2025, and interim reporting periods in those years. Entities that elect the practical expedient and, if applicable, make the accounting policy election are required to apply the amendments prospectively. The Company is currently evaluating the impact of ASU 2025-05 on its financial statements and disclosures.

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