Gradiant, founded in 2013 and headquartered in Woburn, United States, has raised a total of $400 million across multiple funding rounds, reaching a $1 billion valuation in May 2023. The company’s funding includes a $1.4 million Seed round, $1.4 million Series A, $28 million Series B, and $330 million across Series C–D rounds led by Schlumberger New Energy, Warburg Pincus, and BoltRock Holdings. With 201-500 employees, Gradiant specializes in industrial water treatment technologies, focusing on PFAS removal, lithium extraction, and green hydrogen production for sustainable industrial operations.