Primoris Services Corporation is a holding company. The Company holds various subsidiaries, through which it operates as a specialty contractor and infrastructure company. It operates in three segments: the West Construction Services segment (West segment), the East Construction Services segment (East segment) and the Energy segment. The West segment includes underground and industrial operations, and construction services performed by ARB, Inc., ARB Structures, Inc., Rockford Corporation, Q3C and Vadnais. The East segment includes the JCG Heavy Civil division, the JCG Infrastructure and Maintenance division, BW Primoris and Cardinal Contractors, Inc. construction business. The Energy segment includes operations of the Primoris Energy Services (PES) pipeline and gas facility construction and maintenance operations, the JCG Industrial division, the Surber and Ram-Fab operations, and the Primoris Aevenia, Inc. (Aevenia) operations.