Nature of Business (Tables)

12 Months Ended

Dec. 31, 2016

Nature of Business

Schedule of list of primary operating subsidiaries and their reportable segment

Subsidiary	Reportable Segment
ARB, Inc. (“ARB”)	West
ARB Structures, Inc.	West
Q3 Contracting, Inc. (“Q3C”)	West
Rockford Corporation (“Rockford”)	West
Vadnais Trenchless Services, Inc. (“Vadnais”)	West
Cardinal Contractors, Inc.	East
BW Primoris, LLC (“BWP”)	East
James Construction Group, LLC (“JCG”):	East
JCG Heavy Civil Division	East
JCG Infrastructure and Maintenance Division	East
Primoris Energy Services Corporation (“PES”)	Energy
PES Pipeline Services	Energy
PES Industrial Division	Energy
OnQuest, Inc.	Energy
OnQuest Canada, ULC	Energy
Primoris Aevenia, Inc. (“Aevenia”)	Energy