Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”) today announced that it completed the acquisition of Q3 Contracting Inc. (“Q3”) on November 19, 2012. The material terms of the transaction were previously disclosed in a press release dated November 13, 2012. Based in Little Canada, Minnesota, just north of St. Paul, Q3 specializes in small diameter pipeline and gas distribution construction. Q3 will operate as part of Primoris's West Construction Services segment. Current President Jay Osborn will continue to manage day to day operations. Further details of the transaction, including pro forma financial information and other data, will be included in a Form 8-K expected to be filed prior to the end of January 2013. These filings will be available at the Securities and Exchange Commission's web site, www.sec.gov, and at the "Investor Relations" section of Primoris's web site at www.prim.com. ABOUT Q3 CONTRACTING Q3 Contracting is a privately owned and operated construction contracting company that provides both specific and turnkey services for its customers in the gas, oil, electric and telecommunications industry. Its labor force is experienced and highly mobile. In total the company workforce is nearly 700, with headquarters in Minnesota and branch offices in Denver, Colorado, Milwaukee, Wisconsin and Des Moines, Iowa. ABOUT PRIMORIS Founded in 1946, Primoris, through various subsidiaries, has grown to become one of the largest construction service enterprises in the United States. Serving diverse end markets, Primoris provides a wide range of construction, fabrication, maintenance, replacement, water and wastewater, and engineering services to major public utilities, petrochemical companies, energy companies, municipalities, and other customers. Since December 2009, Primoris has more than doubled its size and the Company's national footprint now extends from Florida, along the Gulf Coast, through California, into the Pacific Northwest and Canada. For additional information, please visit www.prim.com. FORWARD-LOOKING STATEMENTS This press release contains certain forward-looking statements, including with regard to the Company's future performance. Words such as "estimated," "believes," "expects," "projects," "may," and "future" or similar expressions are intended to identify forward-looking statements. Forward-looking statements inherently involve risks and uncertainties, including without limitation, those detailed in the "Risk Factors" section and other portions of our Annual Report on Form 10-K, our Form 10-Q, and other filings with the Securities and Exchange Commission. Primoris does not undertake any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.