EX-21.1 2 prim-20171231ex211591fdc.htm EX-21.1

Exhibit 21.1

Subsidiaries and Equity Investments of the Registrant

Subsidiary |  | Jurisdiction of Organization
ARB, Inc. |  | California
ARB Structures, Inc. |  | California
ARB Chile, Ltda. |  | Chile
Alaska Continental Pipeline. Inc. |  | Delaware
OnQuest Canada, ULC (formerly Born Heaters Canada) |  | Alberta, Canada
Cardinal Contractors, Inc. |  | Florida
GML Coatings, LLC |  | Florida
James Construction Group, LLC |  | Florida
Juniper Rock Corporation |  | California
OnQuest, Inc. |  | California
OnQuest Heaters, Inc. |  | Delaware
PFMG Solar Tustin, LLC |  | Delaware
Pipe Jacking Trenchless, Inc. |  | California
Primoris Aevenia, Inc. |  | Texas
Primoris Design & Construction, Inc. |  | Delaware
Primoris Distribution Services, Inc. |  | Texas
Primoris Electric, Inc. |  | California
Primoris Pipeline Services Corporation |  | Texas
Primoris Energy Services Corporation |  | Texas (1)
Ram-Fab, LLC |  | South Carolina
Q3 Contracting, Inc. |  | Minnesota
Rockford Corporation |  | Oregon
Rockford Holdings Corporation |  | Delaware
Rockford Pipelines Canada, Inc. |  | Alberta, Canada
Saxon Construction, Inc. |  | Texas
Vadnais Trenchless Services, Inc. |  | California

| (1) |  | Under a trademark license agreement, Primoris Energy Services Corporation used the tradename “Sprint Pipeline Services” during the period ending March 2015.

With the exception of Primoris Energy Services Corporation, Primoris Aevenia, Inc., and OnQuest Canada, ULC, the subsidiaries do not conduct business under any names other than those set forth above.

Equity Investments of the Registrant

Organization |  | Jurisdiction of Organization |  | Registrant’s Equity Interest |
ARB Inc. & B&M Engineering Co — A JV |  | California |  | 50 | %
Alvah, Inc. (a) |  | California |  | 49 | %
Blythe Power Constructors (b) |  | California |  | 50 | %
Carlsbad Power Constructors |  | California |  | 50 | %
St.-Bernard Levee Partners |  | Delaware |  | 30 | %
WesPac Energy, LLC (a) |  | Nevada |  | 50 | %
WesPac Midstream, LLC (a) |  | Delaware |  | 7.5 | %

| (a) |  | This equity investment was sold during the twelve months ended December 31, 2014.

| (b) |  | The project underlying this entity was completed and operational in 2015.

The above noted entities do not conduct business under any names other than those set forth above.