Arq, Inc.

Arq, Inc. is an environmental technology company that develops and sells consumable solutions for air, water, and soil treatment, primarily based on activated carbon products. The company manufactures and markets granular activated carbon (GAC), powdered activated carbon (PAC), colloidal carbon products, and additives for air emissions control. These products are applied in water treatment, groundwater remediation, soil and sediment treatment, air emissions control, and as asphalt additives, helping customers meet regulatory requirements for contaminants such as mercury, PFAS, and other pollutants.

Arq operates primarily in the United States and Canada, with manufacturing facilities and a lignite coal mine (Five Forks Mine) that supplies raw materials, making it a vertically integrated producer of activated carbon in North America. The company was formerly known as Advanced Emissions Solutions, Inc. and rebranded to Arq, Inc. in February 2024. It is publicly traded on the NASDAQ under the ticker ARQ and is headquartered in Greenwood Village, Colorado. Through its focus on advanced purification technologies, Arq positions itself as a key supplier of domestic, high-performance carbon-based treatment solutions in the environmental sector.