EX-21.1 6 exhibit211-subsidiariesofa.htm EX-21.1 Document
Exhibit 21.1
Subsidiaries of Arq, Inc.
Entity NameState or Country of Organization
ACS Land Company, LLCDelaware
ADA Analytics, LLCDelaware
ADA Analytics Israel Ltd.Israel
Arq Solutions, LLCDelaware
Arq Solutions (Operations), LLCDelaware
Arq Solutions (Red River), LLCDelaware
Arq Solutions (Vortex IP), LLCDelaware
Arq Solutions (Vortex Operations), LLCDelaware
Arq Solutions (ES), Inc.Colorado
ADEquity, LLCDelaware
Arq Purification, LLCDelaware
Crowfoot Supply Company, LLCDelaware
Five Forks Mining, LLCDelaware
FluxSorb Technologies, LLCDelaware
Arq Series B, LLCDelaware
Arq IP LimitedUK
Arq International LimitedUK
Arq UK Management LtdUK
Wharnecliffe Asset Management LLCDelaware
Mine Four LLCDelaware
Arq LLCDelaware
Arq Projects Holding Company LLCDelaware
Corbin Project LLCDelaware
Arq Corbin Land LLCDelaware
Arq Corbin LLCDelaware

Each subsidiary does business under its chartered name.