Exhibit 99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES 2016 SECOND QUARTER FINANCIAL RESULTS

Board of Directors Declares $0.055 Per Share Cash Dividend

Financial Highlights

·                  2016 Q2 revenues of $456.8 million, a 6% decrease over 2015 Q2.

·                  2016 Q2 SG&A of $32.5 million, a 16% improvement over 2015 Q2

·                  2016 Q2 net income attributable to Primoris of $5.1 million, a 39% increase over 2015 Q2.  Earnings per share of $0.10 increased by $0.03 from 2015 Q2.

·                  2016 Q2 cash flow from operations of $41.1 million

·                  Total backlog of $1.91 billion at June 30, 2016

Dallas, TX — August 4, 2016— Primoris Services Corporation (NASDAQ GS: PRIM) (“Primoris” or “Company”) today announced financial results for its second quarter ended June 30, 2016.

The Company also announced that on August 3, 2016 its Board of Directors declared a $0.055 per share cash dividend to stockholders of record on September 30, 2016, payable on or about October 14, 2016.

David King, President and Chief Executive Officer of Primoris, commented, “While our bottom line improved over 2015’s second quarter results, I will be the first to tell you that we are not pleased with our performance this quarter.  The biggest earnings impact on the quarter was a significant write-down on two Texas Heavy Civil projects that have struggled with completion issues.  Our backlog, which is down from the first quarter, suffered from the timing of final contracts due to customer award delays.  Looking forward, we share the same challenges others in our industry are facing: project awards are being pushed back, and after being awarded, start dates are being delayed.  Environmental concerns, permitting struggles, and the continuing pressure from low oil prices are all contributing to a challenging operating environment.  Even with these challenges, we believe our backlog will grow by year’s end.”

Mr. King continued, “In the face of these headwinds, we are focusing on what we can control.  We have followed through on our commitment to lower our SG&A expenses, and we will continue with this effort.  We are continuing to develop new clients and locations to offer our services.  Our balance sheet remains strong, and our operating cash flow this quarter was the best second quarter cash flow since we went public in 2008.  Although they do fluctuate from year to year, we continue to pursue Master Service Agreements, which give us a revenue base that distinguishes us from many of our peers.”

2016 SECOND QUARTER RESULTS OVERVIEW

Revenues in the second quarter 2016 decreased by $26.7 million to $456.8 million from $483.5 million for the same period in 2015.  Gross profit for the second quarter 2016 decreased by $3.2 million to $43.3 million from $46.5 million for the same period in 2015.  Gross profit as a percentage of revenue decreased to 9.5% for the second quarter 2016, compared to 9.6% for the same period in 2015.

From an end-market perspective, our end-market revenues during the second quarter of 2016 compared to the prior year increased by $28.0 million for the industrial end-market, $3.2 million for the underground utility end-market, and $9.1 million for other markets. Revenues decreased by $19.5 million for the underground capital end-market, by $17.1 million for the engineering end-market, and by $30.4 million for the heavy civil end-market.

SEGMENT RESULTS

·              West Construction Services (“West segment”) — The West segment includes the underground and industrial operations and construction services performed by ARB, ARB Structures, Rockford, Q3C, and Vadnais.  Most of the entities perform work primarily in California; however, Rockford operates throughout the United States and Q3C operates in Colorado and the upper Midwest United States.  The segment also includes the operations of the Blythe, Wilmington and Carlsbad joint ventures.

·              East Construction Services (“East segment”) — The East segment includes the James Construction Group (“JCG”) Heavy Civil division, the JCG Infrastructure and Maintenance division, BW Primoris, and Cardinal Contractors, located primarily in the southeastern United States and in the Gulf Coast region of the United States.

·              Energy (“Energy segment”) — The Energy segment businesses are located primarily in the southeastern United States, the Gulf Coast region and the upper Midwest region of the United States. The segment includes the PES pipeline and gas facility construction and maintenance operations, the PES Industrial division, and the Aevenia and Ram-Fab operations. Additionally, the segment includes the OnQuest, Inc. and OnQuest Canada, ULC operations for the design and installation of liquefied natural gas facilities and high-performance furnaces and heaters for the oil refining, petrochemical and power generation industries.

Segment Revenues

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Segment Gross Profit

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West Segment:  Revenues for the West segment decreased by $17.6 million in the second quarter 2016, compared to the same period in 2015.  The decrease was primarily the result of a decrease in volume at Rockford, the result of the 2015 completion of an 88-mile pipeline project in the Houston, Texas area. The decrease was partially offset by increased revenues at the ARB Structures division from the construction of several parking structures in southern California; increased revenues at Q3C as the weather improved earlier in 2016 and increased revenue at the ARB Underground division, primarily from work for its two largest utility customers.  Gross profit for the West segment increased by $1.0 million in the second quarter 2016, compared to the same period in 2015.  The increase in gross profit was primarily the result of increased revenues for Q3C, as well as second quarter 2015 impact of adverse weather conditions on Rockford’s gross profit.  These increases were offset by a decrease in gross margin at the ARB Underground division, primarily from a change in the mix of work done for its two largest utility customers and a delay in expected work in the quarter.

East Segment:  Revenues in the East segment decreased by $27.4 million in the second quarter 2016, compared to the same period in 2015.  The decrease was largely due to a decrease in revenue from a large petrochemical project in Louisiana for JCG’s Infrastructure & Maintenance division.  The gross profit for the East segment decreased by $8.7 million in the second quarter 2016, compared to the same period in 2015, primarily because of lower revenues at JCG’s Infrastructure and Maintenance division and the impact of weather and productivity issues on JCG Heavy Civil TXDOT projects, including the reduction for two Belton area jobs.

Energy Segment:  Revenues in the Energy segment increased by $18.2 million in the second quarter of 2016, compared to the same period in 2015. Increased revenues for the PES Industrial division related to the large petrochemical project in Louisiana were partially offset by declines at OnQuest due to the general decrease in work volume caused by project delays and an overall energy industry slowdown.  The gross profit for the Energy segment increased by $4.6 million in the second quarter 2016, compared to the same period in 2015.  The increase in gross profit is mainly attributable to the increased revenues at the PES Industrial division.

Selling, general and administrative expenses (“SG&A”) were $32.5 million, or 7.1% of revenues for the second quarter 2016, compared to $38.5 million, or 8.0% of revenues for the second quarter 2015.

Operating income for the second quarter 2016 was $10.8 million, or 2.4% of total revenues, compared to $7.9 million, or 1.6% of total revenues, for the same period last year.

Net non-operating items in the second quarter 2016 resulted in expense of $2.2 million, compared to $1.9 million in net expense in the second quarter 2015.

The provision for income taxes for the second quarter 2016 was $3.3 million, for an effective tax rate on income attributable to Primoris of 39.7%, compared to $2.3 million, for an effective tax rate on income attributable to Primoris of 39.1%, in the second quarter 2015.

Net income attributable to Primoris for the second quarter 2016 was $5.1 million, or $0.10 per diluted share, compared to net income attributable to Primoris of $3.6 million, or $0.07 per diluted share, in the same period in 2015.

Fully diluted weighted average shares outstanding for the second quarter 2016 increased slightly to 52.02 million from 51.82 million in the second quarter 2015.

OTHER FINANCIAL INFORMATION

Primoris’ balance sheet at June 30, 2016 included cash and cash equivalents of $97.1 million, working capital of $245.6 million, total debt and capital leases of $250.6 million and stockholders’ equity of $488.6 million.  Primoris’ tangible net worth at June 30, 2016 was $328.6 million.

Based on expected start dates for the power plant and major pipeline projects in backlog, anticipated levels of customer maintenance, MSA spending, and new project awards, and given the continued uncertainty caused by the energy markets, the Company estimates that for the four quarters ending June 30, 2017, net income attributable to Primoris will be between $0.90 and $1.10 per fully diluted share.

BACKLOG

At June 30, 2016, Fixed Backlog was $1.38 billion, compared to $1.52 billion at December 31, 2015.

At June 30, 2016, MSA Backlog was $533 million, compared to $571 million at December 31, 2015.  MSA Backlog represents estimated MSA revenues for the next four quarters.

Total Backlog at June 30, 2016 was $1.91 billion, compared to $2.09 billion at December 31, 2015.

After quarter end, we received the release of an additional $46.6 million on a previously announce $290 million industrial and civil award.  This amount was not included in the June 30th backlog number.

Backlog, including estimated MSA revenues, should not be considered a comprehensive indicator of future revenues.  There is a certain percentage of total revenues, from projects such as cost reimbursable and time-and-materials projects, that do not flow through backlog.  Any project may still be cancelled at the convenience of our customers.

CONFERENCE CALL

David King, President and Chief Executive Officer, and Peter J. Moerbeek, Executive Vice President and Chief Financial Officer will host a conference call today, Thursday, August 4, 2016 at 11:30 am Eastern Time / 10:30 am Central Time to discuss the results.

Interested parties may participate in the call by dialing:

·            (877) 407-8293 (Domestic)

·            (201) 689-8349 (International)

If you are unable to participate in the live call, a replay may be accessed by dialing (877) 660-6853, conference ID 13641808, and will be available for approximately two weeks. The conference call will also be broadcast live over the Internet and can be accessed and replayed through the Investor Relations section of Primoris’ website at www.prim.com. Once at the Investor Relations section, please click on “Events & Presentations”.

ABOUT PRIMORIS

Founded in 1960, 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. The Company’s national footprint 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 known and unknown risks, uncertainties, and other factors, including without limitation, those described in this press release and those detailed in the “Risk Factors” section and other portions of our Annual Report on Form 10-K for the period ended December 31, 2015, and other filings with the Securities and Exchange Commission.  Given these uncertainties, you should not place undue reliance on forward-looking statements.  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.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

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CONDENSED CONSOLIDATED BALANCE SHEETS

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

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