| Subsidiary | State of Formation | |||||||||||||
| Limbach Holdings LLC | Delaware | |||||||||||||
| Limbach Facility Services LLC | Delaware | |||||||||||||
| Harper Limbach Construction LLC | Delaware | |||||||||||||
| Harper Limbach LLC | Delaware | |||||||||||||
| Limbach Company LP | Delaware | |||||||||||||
| Limbach Company LLC | Delaware | |||||||||||||
Limbach Facility & Project Solutions LLC | Delaware | |||||||||||||
| Jake Marshall, LLC | Tennessee | |||||||||||||
| Coating Solutions, LLC | Tennessee | |||||||||||||
| Acme Industrial Piping, LLC | Tennessee | |||||||||||||
| Industrial Air, LLC | North Carolina | |||||||||||||
| Kent Island Mechanical, LLC | Maryland | |||||||||||||
| Consolidated Mechanical, LLC | Kentucky | |||||||||||||