Subsidiary

Jurisdiction of Organization

​

​

​

ARB, Inc.

​

California

ARB Structures, Inc.

​

California

ARB Chile, Ltda.

​

Chile

Cardinal Contractors, Inc.

​

Florida

Comtrac Services, LLC

​

Delaware

Future Infrastructure Holdings, LLC

​

Delaware

Future Infrastructure, LLC

​

Texas

Future Telecom Purchaser, LLC

​

Delaware

Gardner Telecommunications, LLC

​

Texas

James Construction Group, LLC

​

Florida

Juniper Rock Corporation

​

Florida

OnQuest, Inc.

​

California

OnQuest Canada, ULC (formerly Born Heaters Canada)

​

Alberta

OnQuest Heaters, Inc.

​

Delaware

PFMG Solar Tustin, LLC

​

Delaware

Pipe Jacking Trenchless, Inc.

​

California

Pride Utility Construction Co., LLC

​

Delaware

Primoris Renewable Energy, Inc.

​

Texas

Primoris Design & Construction, Inc.

​

Delaware

Primoris Distribution Services, Inc.

​

Texas

Primoris Electric, Inc.

​

California

Primoris Energy Services Corporation

​

Texas

Primoris T&D Services, LLC

​

Delaware

Primoris Canada ULC

​

British Columbia

Q3 Contracting, Inc.

​

Minnesota

Rockford Corporation

​

Oregon

Rockford Holdings Corporation

​

Delaware

Rockford Pipelines Canada, Inc.

​

Alberta

Saxon Construction, Inc.

​

Texas

Talus Development, LLC

​

Arizona

Vadnais Trenchless Services, Inc.

​

California

Willbros Group, Inc.

​

Delaware