Arq, Inc. (NASDAQ: ARQ)

Arq, Inc. is an environmental technology company specializing in the production and sale of activated carbon (AC) and other chemical products designed to treat air, water, and soil contaminants. The company operates primarily in the advanced purification technologies (APT) market, catering to industries such as coal-fired power generation, industrial processes, water treatment, and soil remediation. Arq's proprietary AC products are engineered to reduce pollutants, including mercury, per- and polyfluoroalkyl substances (PFAS), and other harmful substances, helping customers meet stringent environmental regulations.

Arq generates revenue through the sale of its consumable AC products, which include powdered activated carbon (PAC), granular activated carbon (GAC), and colloidal carbon product (CCP). These products are used to purify contaminated liquid, soil, and gas streams from various industrial sources, including wastewater treatment plants, coal-fired power plants, and other end markets. The company's primary customer base includes coal-fired power generators, industrial customers, and water treatment facilities. Revenue is recognized as orders are fulfilled, with contracts typically ranging from one to five years in duration.

• Activated Carbon (AC) Products: Arq's core business revolves around the production and sale of AC products, including PAC, GAC, and CCP. These products are used to capture and remove impurities, contaminants, and pollutants from gas, water, soil, and other product or waste streams. The company's AC products cater to markets such as coal-fired power generation, industrial processes, water treatment, and soil remediation. The Five Forks Mine, a lignite coal mine owned by Arq, supplies the primary raw material for the manufacturing of the majority of its products. Additionally, the company owns the Corbin Facility, which processes bituminous coal fines to produce Corbin Wetcake, a purified, microfine carbon powder used in high-value applications. However, due to design flaws in the GAC Facility, the company has paused GAC production and idled the Corbin Facility as a cost-saving measure.

Arq operates in a competitive industry, with key competitors including Norit Americas, Inc. (owned by One Equity Partners) and Calgon Carbon (owned by Kuraray Co., Ltd.). The company's competitive advantages include its vertically integrated supply chain, which provides access to lignite feedstock for its PAC and other products. This integration allows Arq to maintain a competitive edge over other market participants. Additionally, the company's proprietary technologies and extensive expertise in environmental solutions contribute to its market position.

Arq's customer base is diverse, encompassing coal-fired power generators, industrial customers, and water treatment facilities. The company's top three customers accounted for approximately 42% of its revenue for the year ended December 31, 2025. The loss of any of these customers could have a material adverse effect on Arq's operating results. The company's products are used to purify contaminated liquid, soil, and gas streams from various industrial sources, making it a critical supplier in the environmental technology sector.