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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 10-K

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(Mark One)

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For the fiscal year ended December 31, 2024

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For the transition period from                  to           

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Commission file number: 001-34145

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Primoris Services Corporation

(Exact name of registrant as specified in its charter)

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(214) 740-5600

(Registrant’s telephone number, including area code)

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Securities registered pursuant to Section 12(b) of the Act:

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Securities registered pursuant to Section 12(g) of the Act: None

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Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ⌧ No ◻

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Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ◻ No ⌧

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Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ⌧  No ◻

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Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ⌧  No ◻

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Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

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Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

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If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

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Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐  No ⌧

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The aggregate market value of the voting common equity held by non-affiliates of the registrant was approximately $2,648.8 million based upon the closing price of such common equity as of June 30, 2024 (the last business day of the Registrant’s most recently completed second fiscal quarter). For purposes of this Annual Report on Form 10-K, in addition to those stockholders which fall within the definition of “affiliates” under Rule 405 of the Securities Act of 1933, holders of ten percent or more of the Registrant’s common stock are deemed to be affiliates.

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On February 18, 2025 there were 53,747,628 shares of common stock, par value $0.0001, outstanding.

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DOCUMENTS INCORPORATED BY REFERENCE

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The following documents are incorporated by reference into this Annual Report on Form 10-K: Portions of the registrant’s definitive Proxy Statement for its 2025 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K.

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TABLE OF CONTENTS

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FORWARD-LOOKING STATEMENTS

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This Annual Report on Form 10-K contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), which are subject to the “safe harbor” created by those sections. Forward-looking statements include information concerning our possible or assumed future results of operations, business strategies, financing plans, competitive position, industry environment, growth opportunities, the effects of regulation and the economy, generally. Forward-looking statements include all statements that are not historical facts and usually can be identified by terms such as “anticipates,” “believes,” “could,” “estimates,” “expects,” “intends,” “may,” “plans,” “potential,” “predicts,” “projects,” “should,” “will,” “would” or similar expressions.

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Forward-looking statements include information concerning our possible or assumed future results of operations, business strategies, financing plans, competitive position, industry environment, potential growth opportunities, the effects of regulation and the economy, generally. Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Actual results may differ materially as a result of a number of factors, including, among other things, customer timing, project duration, weather, and general economic conditions; changes in our mix of customers, projects, contracts and business; regional or national and/or general economic conditions and demand for our services; price, volatility, and expectations of future prices of oil, natural gas, and natural gas liquids; variations and changes in the margins of projects performed during any particular quarter; increases in the costs to perform services caused by changing conditions; the termination, or expiration of existing agreements or contracts; the budgetary spending patterns of customers; inflation, tariffs and other increases in construction costs that we may be unable to pass through to our customers; cost or schedule overruns on fixed-price contracts; availability of qualified labor for specific projects; changes in bonding requirements and bonding availability for existing and new agreements; the need and availability of letters of credit; increases in interest rates and slowing economic growth or recession; the instability in the banking system; costs we incur to support growth, whether organic or through acquisitions; the timing and volume of work under contract; losses experienced in our operations; the results of the review of prior period accounting on certain projects and the impact of adjustments to accounting estimates; developments in governmental investigations and/or inquiries; intense competition in the industries in which we operate; failure to obtain favorable results in existing or future litigation or regulatory proceedings, dispute resolution proceedings or claims, including claims for additional costs; failure of our partners, suppliers or subcontractors to perform their obligations; cyber-security breaches; failure to maintain safe worksites; risks or uncertainties associated with events outside of our control, including conflicts in the Middle East, war between Russia and Ukraine, and tension between China and Taiwan, severe weather conditions, public health crises and pandemics, political crises or other catastrophic events; client delays or defaults in making payments; the cost and availability of credit and restrictions imposed by credit facilities; failure to implement strategic and operational initiatives; risks or uncertainties associated with acquisitions, dispositions and investments; possible information technology interruptions, cybersecurity threats or inability to protect intellectual property; disruptions related to artificial intelligence; the Company’s failure, or the failure of our agents or partners, to comply with laws; the Company's ability to secure appropriate insurance; new or changing political conditions and legal and regulatory requirements, including those relating to environmental, health and safety matters; the loss of one or a few clients that account for a significant portion of the Company's revenues; asset impairments; and risks arising from the inability to successfully integrate acquired businesses. We discuss many of these risks in detail in Part I, Item 1A. “Risk Factors.” You should read this Annual Report on Form 10-K completely and with the understanding that our actual future results may be materially different from what we expect.

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Given these uncertainties, you should not place undue reliance on forward-looking statements. Forward-looking statements represent management’s beliefs and assumptions only as of the date of this Annual Report on Form 10-K. We assume no obligation to update forward-looking statements publicly, or to update the reasons actual results could differ materially from those anticipated in any forward-looking statements, even if new information becomes available.

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PART I

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ITEM 1. BUSINESS

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Business Overview

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Primoris Services Corporation (“Primoris”, the “Company”, “we”, “us”, or “our”) is one of the leading providers of infrastructure services operating mainly in the United States and Canada. We provide a wide range of construction, maintenance, replacement, fabrication, and engineering services to a diversified base of customers through our two segments: Utilities and Energy. The structure of our reportable segments is generally focused on broad end-user markets for our services.

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We have longstanding customer relationships with solar facility developers and utility, refining, petrochemical, communications, midstream, downstream, and engineering companies, as well as power producers and transportation agencies across our core markets. We provide our services to a diversified base of customers, under a range of contracting options. A portion of our services are provided under Master Service Agreements (“MSA”), which are generally multi-year agreements. The remainder of our services are generated from contracts for specific construction or installation projects.

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Reportable Segments

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Our current reportable segments are the Utilities segment and the Energy segment.

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The Utilities segment operates throughout the United States and specializes in a range of services, including the installation and maintenance of new and existing natural gas and electric utility distribution and transmission systems, and communications systems.

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The Energy segment operates throughout the United States and Canada and specializes in a range of services that include engineering, procurement, construction, and maintenance services for entities in the energy, renewable energy and energy storage, renewable fuels, and petroleum and petrochemical industries, as well as state departments of transportation.

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Strategy

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Our strategy has remained consistent from year to year and continues to emphasize the following key elements:

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Backlog

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Backlog is discussed in Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Annual Report on Form 10-K, which is incorporated herein by reference.

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Customers

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We have longstanding customer relationships with solar facility developers and utility, refining, petrochemical, communications, midstream, downstream, and engineering companies, as well as power producers and transportation agencies across our core markets. We have completed major underground and industrial projects for large natural gas transmission and petrochemical companies in the United States and major electrical and gas projects for large utility companies in the United States. Although we have not been dependent upon any one customer in any year, a small number of customers tend to constitute a substantial portion of our total revenue in any given year.

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We enter into a large number of contracts each year, and the projects can vary in length from daily work orders to as long as 36 months, and occasionally longer, for completion on larger projects. We often provide services under long term MSAs, which are generally multi-year agreements for specific types of work. Work performed under these contracts is typically generated through project specific work orders, ranging from repairs and new installations, to maintenance and upgrade services. These MSAs have various terms, depending on the nature of the services provided, and our customers are generally not contractually obligated to purchase an amount of services from us under the MSAs, although we do have MSAs that include minimum spend requirements, or targeted spend amounts. For the years ended December 31, 2024, 2023 and 2022, revenue derived from projects performed under MSAs was 36.8%, 36.7%, and 45.8% of total revenue, respectively.

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Our customers have included many of the leading energy and utility companies in the United States, such as; Xcel Energy, Pacific Gas & Electric, Southern California Gas, Oncor Electric, Duke Energy, Sempra Energy, Williams, Hecate Energy, Consumers Energy, Dominion, Valero, Enel Green Power North America, D.E. Shaw Renewable Investments, Entergy, Florida Power and Light, Intersect Power, Avantus, ExxonMobil, and Enterprise Pipeline as well as the Texas Department of Transportation and the Louisiana Department of Transportation and Development.

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Our top ten customers vary from year to year due to the nature of our business. A large construction project for a customer may result in significant revenue in one year, with significantly less revenue in subsequent years after project completion. For the years ended December 31, 2024, 2023 and 2022, 41.3%, 41.1% and 46.1%, respectively, of total revenue was generated from our top ten customers in each year. In each of the years, a different group of customers comprised the top ten customers by revenue.

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Management in each of our segments and business units is responsible for developing and maintaining successful long-term relationships with customers. Our segment and business unit management teams work with our business development group to foster existing customer relationships and better understand their needs in order to secure additional projects and increase revenue from our current customer base. Segment and business unit managers are also responsible for working with our business development group in pursuing growth opportunities with prospective new customers.

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We believe that developing and fostering strategic relationships with customers will result in increased future opportunities. Some of our strategic relationships are in the form of long-term MSAs. However, we realize that future opportunities also require cost effective, high value bids, as pricing is a key element for most construction projects and service agreements.

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Seasonality, Cyclicality and Variability

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Our results of operations are subject to quarterly variations. Some of the variation is the result of weather, particularly rain, ice, snow, and named storms, which can impact our ability to perform construction and infrastructure services. These seasonal impacts can affect revenue and profitability in all of our businesses. Any quarter can be affected either negatively or positively by atypical weather patterns in any part of the country. In addition, demand for new projects in our Utilities segment tends to be lower during the early part of the calendar year due to clients’ internal budget cycles. As a result, we usually experience higher revenue and earnings in the second, third and fourth quarters of the year as compared to the first quarter.

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Our project values range in size from several hundred dollars to several hundred million dollars. The bulk of our work is comprised of project sizes that average less than $3.0 million. We also perform construction projects which tend not to be seasonal, but can fluctuate from year to year based on customer timing, project duration, weather, and general economic conditions. Our business may be affected by declines, or delays in new projects, or by client project schedules. Because of the cyclical nature of some of our business, the financial results for any period may fluctuate from prior periods, and our financial condition and operating results may vary from quarter to quarter. Results from one quarter may not be indicative of our financial condition, or operating results for any other quarter, or for an entire year.

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Competition

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We face competition on large construction projects from both regional and national contractors, including competition from larger companies that have financial and other resources in excess of those available to us. Competitors

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on small construction projects range from a few large construction companies, to a variety of smaller contractors. We compete with many local and regional firms for construction services and with a number of large firms on select projects. Each business unit faces varied competition depending on the type of project, project location, and services offered.

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We compete with different companies in different end markets. For example, competitors in our utilities markets include Quanta Services, Inc. Dycom Industries, MYR Group, and MasTec, Inc.; competitors in our industrial markets include PCL, Kiewit, Performance Contractors and Boh Brothers; competitors in the renewables market include Blattner Energy, and Mortenson; and competitors in our highway services markets include Sterling Construction Company and Zachry Construction Company. In each market we may also compete with local, private companies.

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We believe that the primary factors influencing competition in our industry are price, reputation for quality, safety, schedule certainty, relevant experience, availability of field supervision and skilled labor, machinery and equipment, financial strength, as well as knowledge of local markets and conditions. We believe that we have the ability to compete favorably in all of these factors.

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Contract Provisions and Subcontracting

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We typically structure contracts as unit-price, time and material, fixed-price or cost reimbursable plus fixed fee. A portion of our revenue is derived from MSAs, which provide a menu of available services that are utilized on an as-needed basis and are typically priced using a unit-price or on a time and material basis. The remainder of our services are generated from contracts for specific construction projects, which are subject to multiple pricing options, including unit-price, time and material, fixed-price, or cost reimbursable plus fixed fee. Under a fixed-price contract, we provide labor, equipment and services required by a project for a competitively bid or negotiated fixed price. Under a unit-price contract, we are committed to providing materials or services required by a project at a fixed price per unit of work. While the unit-price contract shifts the risk of estimating the quantity of units required for a particular project to the customer, any increase in our unit cost over the unit price bid, whether due to inflation, inefficiency, faulty estimates or other factors, is borne by us. Significant materials required under a fixed-price or unit-price contract, such as pipe, solar panels, turbines, boilers and vessels, are typically supplied by the customer.

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Substantially all of our gas and electric distribution and communication services are provided pursuant to renewable MSAs on a “unit-price” basis. Fees on unit-price contracts are negotiated and earned based on units completed. Historically, substantially all of the gas and electric distribution and communications customers have renewed their MSAs with us. Facility maintenance services, such as regularly scheduled and emergency repair work, are provided on an ongoing basis at predetermined rates, or on a time and material basis.

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Construction contracts are primarily obtained through competitive bidding or through negotiations with customers. We are typically invited to bid on projects undertaken by customers who maintain pre-qualified contractor lists. Contractors are selected for the pre-approved contractor lists by virtue of their prior performance for such customers, as well as their experience, reputation for quality, safety record, financial strength, competitiveness, and bonding capacity.

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In evaluating bid opportunities, we consider such factors as the customer, the geographic location of the work, the availability of labor, our competitive advantage or disadvantage relative to other likely bidders, our current and projected workload, the likelihood of additional work, our history with the client, contract terms, and the project’s cost and profitability estimates. We use sophisticated estimating systems and our estimating staff has significant experience in the construction industry. The project estimates form the basis of a project budget against which performance is tracked through a project cost system, thereby enabling management to monitor a project’s cost and schedule performance. Project costs are accumulated and monitored regularly against billings and payments to ensure proper tracking of cash flow on the project.

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Most contracts provide for termination of the contract at the convenience of the owner or contractor. The terms associated with termination for convenience typically cover the reimbursement of all of our costs through a specific date, as well as all reasonable costs associated with demobilizing from the jobsite. In addition, contracts may be subject to certain completion schedule requirements which may include liquidated damages in the event schedules are not met.

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We act as prime contractor on a majority of the construction projects we undertake. In the construction industry, the prime contractor is normally responsible for the execution of the entire contract scope of work, including subcontract work. Thus, we are potentially subject to increased costs and reputational risks associated with the failure of one or more of our subcontractors to perform their respective scope as defined in the contract. While we subcontract specialized activities such as blasting, hazardous waste removal and selected electrical/instrumentation work, we self-perform most of the work on our projects with our own resources, including field supervision, labor, and equipment.

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Risk Management, Insurance and Bonding

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We maintain a comprehensive schedule of insurance policies covering a broad range of exposures arising from our construction and general business operations. All of our policies have been procured with limits and deductibles or self-insured retention amounts up to certain limits applied on an occurrence or claims made basis. In addition, we maintain certain self-insured retentions in our insurance policies in excess of our general, auto, and employers’ liability policies.

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We maintain a comprehensive safety and risk management program that has contributed to a favorable loss experience factor. Under our senior leadership, our enterprise risk management department, and through a large network of safety directors and health, safety, and environmental professionals, we effectively assess and manage potential risks and liabilities throughout the pre-construction and performance phases of our projects. While we place a strong emphasis on maintaining a safe workplace, we cannot provide assurances that we will be able to prevent or reduce all injuries or claims within our operations.

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In connection with our business, we generally are required to provide various types of surety bonds guaranteeing our performance under certain public and private sector contracts. Our ability to obtain surety bonds depends upon our capitalization, working capital, backlog, past performance, management expertise and other factors, and the surety company’s current underwriting standards. To date, we have obtained the level of surety bonds necessary to support our business.

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Regulation and Environmental Requirements

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Our operations are subject to compliance with regulatory requirements of federal, state, and municipal agencies and authorities, and international laws and regulations including with respect to:

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We believe that we have all the licenses and permits required to conduct our operations and that we are in substantial compliance with applicable regulatory requirements.

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We are subject to numerous federal, state, local and international environmental laws and regulations governing our operations, including the handling, transportation and disposal of non-hazardous and hazardous substances and wastes, as well as emissions and discharges into the environment, including discharges to air, surface water, groundwater and soil. We manage these requirements through our corporate environmental management system and comprehensive

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employee training programs to ensure compliance. We have a substantial investment in construction equipment that utilizes diesel fuel, which could be negatively impacted by regulations related to greenhouse gas emissions from such sources.

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We also are subject to laws and regulations that impose liability and cleanup responsibility for releases of hazardous substances into the environment. Under some of these laws and regulations, liability can be imposed for cleanup of previously owned or leased properties, or properties to which hazardous substances or wastes were sent by current, or former operations at our facilities, regardless of whether we directly caused the contamination or violated any law at the time of discharge, or disposal. The presence of contamination from such substances or wastes could interfere with ongoing operations, or affect our ability to sell, lease or use our properties as collateral for financing.

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We continually evaluate whether we must take additional steps at our locations to ensure compliance with environmental laws. While compliance with applicable regulatory requirements has not materially adversely affected our operations in the past, there can be no assurance these requirements will not change, and compliance will not adversely affect our operations in the future. In addition, tighter regulation for the protection of the environment and other factors may make it more difficult to obtain new permits and renewal of existing permits may be subject to more restrictive conditions than currently exist.

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Climate Change-Related Impacts

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Our management considers climate-related risks and opportunities in connection with its long-term strategic planning and enterprise risk management process. While the overall impact on our operations continues to evolve, various aspects of climate change, as well as market and societal concerns about the future impact of climate change, have resulted and are expected to continue to result in operational opportunities and challenges. These opportunities and challenges arise from the physical risks associated with changes in climate, as well as technological advances, market developments and additional regulatory and compliance costs.

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Our operating results can be significantly influenced by the climates in which we operate as well as severe weather events. Changes in climate could result in more accommodating weather patterns for greater periods of time in certain areas, which may enable us to increase our productivity in those areas. Physical risks associated with climate change have also increased hazards associated with certain of our operations, which in turn has increased the potential for liability and increased the costs associated with such operations. Additionally, new legislation or regulation related to climate change could increase our costs. However, due to climate change risks some utility customers are transitioning toward more sustainable sources of power generation, such as renewables, which can provide additional opportunities for our Energy segment. For additional information regarding the risks and opportunities described above, see Risks Related to Operating Our Business in Item 1A. “Risk Factors” of this Annual Report on Form 10-K.

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Human Capital Management

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Employee Profile. We believe that our employees are vital to successfully completing our projects. Our ability to maintain sufficient, continuous work for hourly employees helps us to maintain a stable, loyal workforce with an understanding of our policies and culture, which contributes to our strong performance, safety and quality record. Our talent acquisition team uses internal and external resources to recruit highly skilled and talented workers, and we encourage employee referrals for open positions. In addition, we have partnerships with technical schools where we recruit and hire craft employees.

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Several of our subsidiaries have operations that are unionized through the negotiation and execution of collective bargaining agreements. As of December 31, 2024, approximately 22.9% of our hourly employees, primarily consisting of field laborers, were covered by collective bargaining agreements. These collective bargaining agreements have varying terms and are subject to renegotiation upon expiration. We have not experienced recent work stoppages and believe our employee and union relations are good.

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As of December 31, 2024, we employed 3,074 salaried employees and 12,642 hourly employees. The total number of hourly personnel employed is subject to the volume of infrastructure services and construction work in progress.

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Diversity and Inclusion. We employ a dynamic mix of people to create the strongest company possible. Our policy prohibits discrimination in employment on the basis of age, culture, gender, national origin, sexual orientation, physical appearance, race or religion. We are an inclusive, diverse company with people of all backgrounds, experiences, cultures, styles and talents.

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Professional and Career Development. We strive to develop and sustain a skilled labor advantage by providing thorough on-and off-site training programs, project management training, and leadership development programs. We have company-owned training facilities that support continuous skills training, including several locations where we train electric apprentices to become journeymen. We offer multiple levels of leadership programs designed to meet the needs of our employees and support the development of best-in-class talent. Our five cornerstone programs are Foreman Foundations, Extreme Ownership, Hunt for Leadership Success, Next Level Leadership, and The Leadership Experience. From Foreman Foundations where employees learn the fundamentals of transitioning from a crew member to a crew leader through The Leadership Experience where emerging leaders explore values-based leadership and sharpen their strategic leadership skills, our Learning and Development programs are designed to support Primoris’ vision, mission, and values and promote the growth of our greatest assets, our employees.

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Safety, Health and Wellness. We are committed to the health, safety and wellness of our employees, and we pride ourselves on above average workplace safety. We track and maintain several key safety metrics, which senior management reviews monthly, and we evaluate management on their ability to provide safe working conditions on job sites and to create a strong safety culture. Lost Time Injury Rate (“LTIR”) tracks the rate of injuries in the workplace which results in the employee having to take a minimum of one full working day away from work. For the year ended December 31, 2024, our LTIR rate was 0.08 compared to an industry average of 1.0 per the U.S. Bureau of Labor construction industry statistics. Total Recordable Incident Rate (“TRIR”) tracks the total number of workplace injuries which rise to the level of the Occupational Safety and Health Administration’s definition of recordability, whether leading to time away from work or not. TRIR is reported as the number of workplace safety incidents per 100 full-time workers during a one-year period. For the year ended December 31, 2024, our TRIR rate was 0.50 compared to an industry average of 2.3 per the U.S. Bureau of Labor construction industry statistics.

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Compensation and Benefits. As part of our compensation philosophy, we believe that we must offer and maintain market competitive total rewards programs for our employees in order to attract and retain superior talent. Our compensation programs are generally designed to align employee compensation with market practices and our performance. With respect to our executive officers, business unit management, and other senior leadership, compensation programs consist of both fixed and variable components. The fixed portion is generally set at market levels, with variable compensation designed to reward employees based on company and individual performance. In connection with these compensation programs, we grant stock-based compensation to management and key personnel at the business unit levels, which we believe helps to align incentives throughout our organization. We also enter into employment agreements with our executive officers and certain other key personnel. For additional information regarding our executive compensation, please see the information required in Item 11. “Executive Compensation,” which will be incorporated by reference from our definitive proxy statement related to our 2025 Annual Meeting of Stockholders.

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We also provide additional benefits to our non-union employees, including a Company matched 401(k) Plan, healthcare and insurance benefits, health savings and flexible spending accounts, paid time off, family leave, flexible work schedules, and employee assistance programs.

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Code of Conduct. All of our employees are subject to our Code of Conduct, which includes guidance and requirements concerning, among other things, general business ethics, including policies concerning the environment, conflicts of interest, anti-corruption, harassment and discrimination, data security and privacy, related party transactions, insider trading and the Anti-Bribery & Corruption Policy, which includes guidance and requirements concerning, among other things, interactions with government officials; provision of gifts, entertainment and hospitality; and charitable and political contributions.

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Website Access and Other Information

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Our website address is www.prim.com. You may obtain free electronic copies of our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and any amendments to these reports

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through our website under the “Investors” tab or through the website of the Securities and Exchange Commission (the “SEC”) at www.sec.gov. These reports are available on our website as soon as reasonably practicable after we electronically file them with, or furnish them to, the SEC. In addition, the charters of our Audit Committee, Compensation Committee, Nominating and Corporate Governance Committee, and Strategy and Risk Committee are posted on our website under the “Investors/Governance Documents” tab. Also posted on our website under the “Investors/Governance Documents” tab are our Code of Conduct and charters for our Environmental, Social and Governance Committee, Enterprise Risk Management Committee, and Cyber Security Steering Committee along with our Human Rights and Corporate Environmental policies. We intend to disclose on our website any amendments or waivers to our Code of Conduct.

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We will make available to any stockholder, without charge, copies of our Annual Report on Form 10-K as filed with the SEC. For copies of this or any other information, stockholders should submit a request in writing to Primoris Services Corporation, Inc., Attn: Corporate Secretary, 2300 N. Field Street, Suite 1900, Dallas, TX 75201.

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This Annual Report on Form 10-K and our website may contain information provided by other sources that we believe are reliable. However, we cannot assure you that the information obtained from other sources is accurate or complete. No information on our website is incorporated by reference herein and should not be considered part of this Annual Report on Form 10-K.

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ITEM 1A. RISK FACTORS

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Our business is subject to a variety of risks and uncertainties, many of which are described below. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial also may have a material adverse effect on our business in the future. This Annual Report on Form 10-K includes projections, assumptions and beliefs that are intended to be “forward looking statements” and should be read in conjunction with the discussion of “Forward Looking Statements” at the beginning of this Annual Report on Form 10-K.

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The following risk factors could have a material adverse effect on our business, the results of our operations, our financial condition, our cash flow and the price of our shares. These risk factors could prevent us from meeting our goals or expectations.

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Risks Related Primarily to Operating our Business

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Our financial and operating results may vary significantly from quarter-to-quarter and year-to-year.

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Our business is subject to seasonal and annual fluctuations. Some of the quarterly variation is the result of weather, particularly rain, ice, snow, and named storms, which create difficult operating conditions. Similarly, demand for routine repair and maintenance services for gas utilities is lower during their peak customer needs in the winter, and demand for routine repair and maintenance services for electric utilities is lower during their peak customer needs in the summer. Some of the annual variation is the result of construction projects which fluctuate based on customer timing, project duration, weather, and general economic conditions. Annual and quarterly results may also be adversely affected by:

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As a result, our operating results in any particular quarter may not be indicative of the operating results expected for any other quarter, or for an entire year.

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Demand for our services may decrease during economic recessions or volatile economic cycles, and a reduction in demand in end markets may adversely affect our business.

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A substantial portion of our revenue and profit is generated from construction projects, the awarding of which we do not directly control. The engineering and construction industry historically has experienced cyclical fluctuations in financial results due to economic recessions, downturns in business cycles of our customers, material shortages, price increases by subcontractors, interest rate fluctuations and other economic factors beyond our control. When the general level of economic activity deteriorates, our customers have at times in the past and may in the future delay, or cancel upgrades, expansions, and/or maintenance and repairs to their systems. Many factors, including the financial condition of and potential disruptions related to artificial intelligence in the industries we serve, could adversely affect our customers and their willingness to fund capital expenditures in the future.

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Economic, political, regulatory and market conditions affecting our specific end markets may adversely impact the demand for our services, resulting in the delay, reduction or cancellation of certain projects and these conditions may continue to adversely affect us in the future. For example, much of the work that we perform in the highway markets involves funding by federal, state and local governments. This funding is subject to fluctuation based on the budgets and operating priorities of the various government agencies.

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We are also dependent on the amount of work our customers outsource. In a slower economy, our customers may decide to outsource less infrastructure services, reducing demand for our services. In addition, consolidation, competition or capital constraints in the industries we serve can result in reduced spending by our customers.

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Many of our customers operate in industries subject to rapid technological and regulatory changes, with many being regulated by federal and state government agencies, and the addition of new regulations or changes to existing regulations may adversely impact demand for our services and the profitability of those services.

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Many of our energy customers are regulated by the Federal Energy Regulatory Commission (“FERC”), our communications customers are regulated by the Federal Communications Commission (“FCC”) and our utility customers are regulated by state public utility commissions. These agencies could change the way in which they interpret current regulations and may impose additional regulations. These changes could have an adverse effect on our customers and the profitability of the services they provide, which could reduce demand for our services or delay our ability to complete projects. Additionally, our failure to comply with applicable regulations could result in substantial fines or revocation of our operating licenses, as well as give rise to termination or cancellation rights under our contracts or disqualify us from future bidding opportunities.

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The demand for our pipeline construction services is dependent on the level of operating and capital project spending by midstream companies in the oil and gas industry and industrial companies primarily in the petrochemical industry. This level of spending is subject to large fluctuations depending primarily on the current price, volatility, and expectations of future prices of oil, natural gas, and natural gas liquids. The price is a function of many factors, including levels of supply and demand, government policies and regulations, oil industry refining capacity and the potential development of alternative fuels.

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Specific government decisions could affect demand for our construction services. For example, limitations on the use of “fracking” technology, creation of significant regulatory issues for the construction of underground pipelines and permitting and licensing requirements have reduced our underground work.

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Conversely, government regulations may increase the demand for our pipeline services. Recent pipeline safety legislation could increase demand for our pipeline facility, maintenance, integrity and repair services.

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In addition, many customers operate in industries that are subject to rapid changes in technology, governmental regulation, changing consumer demands and consolidation. Technological advances in the markets we serve, including from climate-related initiatives, could render existing projects or technologies uncompetitive or obsolete, and cause longer-term changes in consumer behavior or alter our customers’ existing operating models. Our failure to rapidly adopt and master new technologies as they are developed or adapt to changing customer requirements could reduce demand for our services.

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Our business may be materially adversely impacted by regional, national and/or global requirements related to climate change and the impact of greenhouse gas emissions in the future.

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Greenhouse gases that result from human activities, including burning of fossil fuels, are the focus of increased scientific and political scrutiny and may be subject to changing legal requirements. International agreements, federal laws, state laws and various regulatory schemes to limit or otherwise regulate emissions of greenhouse gases, and additional restrictions are under consideration by different governmental entities. We derive a portion of our revenue and contract profit from engineering and construction services to clients that own and/or operate a wide range of process plants and own and/or operate electric power generating plants that generate electricity from burning natural gas or various types of solid fuels. These plants emit greenhouse gases as part of the process to generate electricity or other products. Compliance with existing greenhouse gas regulation may prove costly or difficult. It is possible that owners and operators of existing or future process plants and electric generating plants could be subject to new or changed environmental regulations that result in significantly limiting, or reducing the amounts of greenhouse gas emissions, increasing the cost of emitting such gases or requiring emissions allowances. The costs of controlling such emissions or obtaining required emissions allowances could be significant. It also is possible that necessary controls or allowances may not be available. Such regulations could negatively impact client investments in capital projects in our markets, which could negatively impact the market for our products and/or services.

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The establishment of additional rules limiting greenhouse gas emissions could also impact our ability to perform construction services, or to perform these services with current levels of profitability. New regulations may require us to acquire different equipment or change processes. The new equipment may not be available, or it may not be purchased or rented in a cost-effective manner. Project deferrals, delays or cancellations resulting from the potential regulations could adversely impact our business.

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In addition, we could be held liable for significant penalties and damages under certain environmental laws and regulations and also could be subject to a revocation of our licenses or permits. Our contracts with our customers may also impose liabilities on us regarding environmental issues that arise through the performance of our services. From time to time, we may incur costs and obligations for correcting environmental noncompliance matters and for remediation at or relating to certain of our job sites or properties.

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While the potential impact of climate-related changes, including legislative and regulatory responses thereto, on our operations is uncertain, management considers climate-related risks and opportunities in connection with its long-term strategic planning and short-term deployment of resources. Climate change may result in, among other things, changes in rainfall patterns, storm patterns and intensities and temperature levels. Our operating results are significantly influenced by weather, and major changes in historical weather patterns could significantly impact our future operating results. For example, if climate change results in significantly more adverse weather conditions in a given period, we could experience reduced productivity, which could negatively impact our operating results.

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Concerns about the impact of climate change have resulted, and are expected to continue to result, in technological advancements and market developments that impact our business. For example, utility customers are transitioning toward more sustainable sources of power generation, such as renewables, which can provide additional opportunities for our Energy segment. Additionally, increased electrification of new technologies may lead to continued and additional demand for new and expanded electric power infrastructure and reengineering of existing electric power infrastructure. However, concerns about climate change could also result in potential new regulations, regulatory actions or requirements to fund energy efficiency activities, as well as decreased demand for refined products, which in turn could negatively impact our customers and demand for certain of our pipeline, underground utility and infrastructure services.

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Climate change could also affect our customers and the types of projects that they award. Demand for power projects, underground pipelines or highway projects could be affected by significant changes in weather, or climate conditions, or by regulatory changes relating to climate change, which could in turn reduce demand for our services.

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Our results could be adversely affected by natural disasters, public health crises, political crises, or other catastrophic events.

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Natural disasters, such as hurricanes, tornadoes, floods, earthquakes, and other adverse weather and climate conditions; public health crises, such as pandemics and epidemics; political crises, such as terrorist attacks, war, labor unrest, and other political instability; or other catastrophic events could disrupt our operations, or the operations of one or more of our vendors or customers, and could adversely affect our financial results. In particular, these types of events could impact our product supply chain from or to the impacted region and could cause our customers to delay or cancel projects, which could impact our ability to operate. In addition, these types of events could lead to general inefficiencies from having to start and stop work, re-sequencing work or modifying our customary work practices.

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Changes to renewable portfolio standards and decreased demand for renewable energy projects could negatively impact our future results of operations, cash flows and liquidity.

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A significant portion of our future business may be focused on providing construction and/or installation services to owners and operators of solar power and other renewable energy facilities. Currently, the development of solar and other renewable energy facilities benefit from the existence of renewable portfolio standards and other state incentives and requirements. Renewable portfolio standards are state-specific statutory provisions requiring or encouraging that electric utilities generate a certain amount of electricity from renewable energy sources. These standards have initiated significant growth in the renewable energy industry and increased demand for renewable energy infrastructure construction services. Elimination of, or changes to, existing renewable portfolio standards, tax credits or similar environmental policies may negatively affect future demand for our services.

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We may lose business to competitors through the competitive bidding processes.

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We are engaged in highly competitive businesses in which some customer contracts are awarded through bidding processes based on price and the acceptance of certain risks, along with other factors. We compete with other infrastructure services contractors, both regional and national, as well as small local contractors. The strong competition in our markets requires maintaining skilled personnel and investing in technology, which can put pressure on profit margins. We do not obtain contracts from all of our bids and our inability to win bids at acceptable profit margins would adversely affect our business.

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We may be unsuccessful at generating organic growth which may affect our ability to expand our operations or grow our business.

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Our ability to generate organic growth may be affected by, among other factors, our ability to:

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In addition, our customers may reduce the number or size of projects available to us due to their inability to obtain capital. Our customers may also reduce projects in response to economic conditions.

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Many of the factors affecting our ability to generate internal growth may be beyond our control, and we cannot be certain that our strategies will be successful or that we will be able to generate cash flow sufficient to fund our operations and to support internal growth. If we are unsuccessful, we may not be able to achieve internal growth, expand our operations or grow our business.

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The timing of new contracts may result in unpredictable fluctuations in our business.

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A portion of our revenue is derived from project-based work that is awarded through a competitive bid process. The portion of revenue generated from the competitive bid process for 2024, 2023 and 2022 was approximately 28.3 %, 30.1%, and 26.3%, respectively. It is generally very difficult to predict the timing and geographic distribution of the projects that we will be awarded. The selection of, timing of or failure to obtain projects, delays in award of projects, the re-bidding or termination of projects due to budget overruns, cancellations of projects or delays in completion of contracts could result in the under-utilization of our assets and reduce our cash flows. Even if we are awarded contracts, we face additional risks that could affect whether or when work will begin. For example, some of our contracts are subject to financing, permitting and other contingencies that may delay or result in termination of projects. We may have difficulty in matching workforce size and equipment location with contract needs. In some cases, we may be required to bear the cost of a ready workforce and equipment that is larger than necessary, resulting in unpredictability in our cash flow, expenses and profitability. If any expected contract award, or the related work release is delayed or not received, we could incur substantial costs without receipt of any corresponding revenue. Finally, the winding down or completion of work on significant projects will reduce our revenue and earnings if these projects have not been replaced.

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We derive a meaningful portion of our revenue from a few customers, and the loss of one or more of these customers could have significant effects on our revenue, resulting in adverse effects on our financial condition, results of operations and cash flows.

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Our customer base is reasonably concentrated, with our top ten customers accounting for approximately 41.3% of our revenue in 2024, 41.1% of our revenue in 2023 and 46.1% of our revenue in 2022. However, the customers included in our top ten customer list generally vary from year to year. Our revenue is dependent both on performance of larger construction projects and relatively smaller projects under MSAs. For the large construction projects, the completion of the project does not necessarily represent the permanent loss of a customer; however, the future revenue generated from work for that customer may fluctuate significantly.

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We also generate ongoing revenue from our MSA customers, which are generally comprised of regulated gas and electric utilities. If we were to lose one of these customers, our revenue could decline. Reduced demand for our services by larger construction customers or a loss of a significant MSA customer could have an adverse effect on our business.

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Our international operations expose us to legal, political and economic risks in different countries as well as currency exchange rate fluctuations that could harm our business and financial results. We could be adversely affected by our failure to comply with laws applicable to our foreign activities, such as the U.S. Foreign Corrupt Practices Act.

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During 2024, 2023 and 2022, revenue attributable to our services outside of the United States, principally in Canada, was 4.6%, 5.8% and 6.7% of our total revenue, respectively. There are risks inherent in doing business internationally, including:

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The FCPA and similar anti-bribery laws in other jurisdictions prohibit U.S.-based companies and their intermediaries from making improper payments to non-U.S. officials for the purpose of obtaining or retaining business. We pursue opportunities in certain parts of the world that experience government corruption, and in certain circumstances, compliance with anti-bribery laws may conflict with local customs and practices. Our internal policies mandate compliance with all applicable anti-bribery laws. We require our partners, subcontractors, agents and others

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who work for us or on our behalf to comply with the FCPA and other anti-bribery laws. There is no assurance that our policies or procedures will protect us against liability under the FCPA or other laws for actions taken by our agents, employees and intermediaries. If we are found to be liable for FCPA violations (either due to our own acts or our inadvertence, or due to the acts or inadvertence of others), we could suffer from severe criminal or civil penalties or other sanctions, which could have a material adverse effect on our reputation and business. In addition, detecting, investigating and resolving actual or alleged FCPA violations is expensive and could consume significant time and attention of our senior management.

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Backlog may not be realized or may not result in revenue or profit.

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Backlog is measured and defined differently by companies within our industry. We refer to “backlog” as our anticipated revenue from the uncompleted portions of existing contracts where scope is adequately defined, and therefore we can reasonably estimate total contract value, and the estimated revenue on MSA work. We present two measures of backlog; one that includes fixed backlog and estimated revenue on MSA work for the next four quarters, and total backlog that includes all fixed backlog and estimated revenue on MSA work to the end of the MSA agreement. We do not consider renewals when estimating total backlog.

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Backlog is not a comprehensive indicator of future revenue amounts or timing. For instance, contract revenues reflected in our backlog may be realized in different periods from those previously anticipated, which can result from project accelerations or delays due to various reasons, including changes in customer spending priorities, project cancellations, regulatory interruptions, scheduling changes, commercial issues (e.g., permitting), engineering revisions, job site conditions and adverse weather.

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In addition, most contracts may be terminated by our customers on short notice. Reductions in backlog due to cancellation by a customer, or for other reasons, could significantly reduce the revenue that we actually receive from contracts in backlog. In the event of a project cancellation, we are typically reimbursed for all of our costs through a specific date, as well as all reasonable costs associated with demobilizing from the jobsite, but we typically have no contractual right to the total revenue reflected in our backlog. Projects may remain in backlog for extended periods of time. While backlog includes estimated MSA revenue, customers are not contractually obligated to purchase a certain amount of services under the MSA.

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Given these factors, our backlog at any point in time may not accurately represent the revenue that we expect to realize during any period, and our backlog as of the end of a fiscal year may not be indicative of the revenue we expect to earn in the following fiscal year. Inability to realize revenue from our backlog could have an adverse effect on our business.

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While backlog may not be indicative of the revenue we expect to earn the following fiscal year, it is a potential, though not comprehensive, indicator of future revenue more generally; however, recognition of revenue from backlog does not necessarily ensure that the projects will be profitable. Poor project execution could impact profit from contracts included in backlog. For projects for which a loss is expected, future revenue will be recorded with no margin, which may reduce the overall margin percentage for work performed.

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Our actual cost may be greater than expected in performing our contracts causing us to realize significantly lower profit or losses on our projects.

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We currently generate, and expect to continue to generate, a substantial portion of our revenue from fixed price and unit price contracts. The actual cost of labor and materials may vary from the costs we originally estimated, and we may not be successful in recouping additional costs from our customers. These variations may cause gross profit for a project to differ from those we originally estimated. Reduced profitability or losses on projects could occur due to changes in a variety of factors such as:

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As projects grow in size and complexity, multiple factors may contribute to reduced profit or losses, and depending on the size of the particular project, variations from the estimated contract costs could have a material adverse effect on our business.

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Weather can significantly affect our revenue and profitability.

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Our ability to perform work and meet customer schedules can be affected by weather conditions such as snow, ice, rain, and named storms. Weather may affect our ability to work efficiently and can cause project delays and additional costs. Our ability to negotiate change orders for the impact of weather on a project could impact our profitability. In addition, the impact of weather can cause significant variability in our quarterly revenue and profitability.

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We require subcontractors and suppliers to assist us in providing certain services, and we may be unable to retain the necessary subcontractors or obtain supplies to complete certain projects which could adversely affect our business.

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We use subcontractors to perform portions of our contracts and to manage workflow. While we are not dependent on any single subcontractor, general market conditions may limit the availability of subcontractors to perform portions of our contracts causing delays and increasing our costs.

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Although significant materials are often supplied by the customer, we use suppliers to provide some materials and equipment used for projects. If a supplier fails to provide supplies and equipment at the estimated price, fails to provide adequate amounts of supplies and equipment, fails to provide supplies or equipment that meet the project requirements, or fails to provide supplies when scheduled, we may be required to source the supplies or equipment at a higher price or may be required to delay performance of the project. The additional cost or project delays can negatively impact project profitability.

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Failure of a subcontractor or supplier to comply with laws, rules or regulations could negatively affect our reputation and our business.

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We periodically enter into joint ventures which require satisfactory performance by our joint venture partners of their obligations. The failure of our joint venture partners to perform their joint venture obligations could impose additional financial and performance obligations on us that could result in reduced profit or losses for us with respect to the joint venture.

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We periodically enter into various joint ventures and teaming arrangements where control may be shared with unaffiliated third parties. At times, we also participate in joint ventures where we are not a controlling party. In such instances, we may have limited control over joint venture decisions and actions, including internal controls and financial reporting which may have an impact on our business. If our joint venture partners fail to satisfactorily perform their joint venture obligations, the joint venture may be unable to adequately perform or deliver its contracted services. Under these circumstances, we may be required to make additional investments or provide additional services to ensure the adequate performance and delivery of the contracted services. These additional obligations could result in reduced profit and may impact our reputation in the industry.

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We may experience delays and defaults in client payments and we may pay our suppliers and subcontractors before receiving payment from our customers for the related services, which could result in an adverse effect on our financial condition, results of operations and cash flows.

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We use subcontractors and material suppliers for portions of certain work, and our customers pay us for those related services. If we pay our suppliers and subcontractors for materials purchased and work performed for customers who fail to pay us, or such customers delay paying us for the related work or materials, we could experience a material adverse effect on our financial condition, results of operations and cash flows. In addition, if customers fail to pay us for

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work we perform, we could experience a material adverse effect on our financial condition, results of operations and cash flows.

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Our inability to recover on contract modifications against project owners for payment or performance could negatively affect our financial condition, results of operations and cash flows.

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We periodically present contract modifications to our clients for changes in contract specifications or requirements. We consider unapproved change orders to be contract modifications for which customers have not agreed to both scope and price. We consider claims to be contract modifications for which we seek, or will seek, to collect from customers, or others, for customer-caused changes in contract specifications or design, or other customer-related causes of unanticipated additional contract costs on which there is no agreement with customers. Claims can also be caused by non-customer-caused changes, such as rain or other weather delays. In some cases, settlement of contract modifications may not occur until after completion of work under the contract. A failure to promptly document and negotiate a recovery for contract modifications could have a negative impact on our cash flows, and an overall ability to recover contract modifications could have a negative impact on our financial condition, results of operations and cash flows.

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For some projects we may guarantee a timely completion or provide a performance guarantee which could result in additional costs, such as liquidated damages, to cover our obligations.

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In our fixed-price and unit-price contracts we may provide a project completion date, and in some of our projects we may commit that the project will achieve specific performance standards. Failure to complete the project as scheduled or at the contracted performance standards could result in additional costs or penalties, including liquidated damages, and such amounts could exceed expected project profit.

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A significant portion of our business depends on our ability to provide surety bonds, and we may be unable to compete for or work on certain projects if we are not able to obtain the necessary surety bonds.

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Our contracts frequently require that we provide payment and performance bonds to our customers. Under standard terms in the surety market, sureties issue or continue bonds on a project-by-project basis and can decline to issue bonds at any time or require the posting of additional collateral as a condition to issuing or renewing bonds.

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Current or future market conditions, as well as changes in our surety providers’ assessments of our operating and financial risk, could cause our surety providers to decline to issue or renew, or to substantially reduce, the availability of bonds for our work and could increase our bonding costs. These actions could be taken on short notice. If our surety providers were to limit or eliminate our access to bonding, our alternatives would include seeking bonding capacity from other sureties, finding more business that does not require bonds and posting other forms of collateral for project performance, such as letters of credit or cash. We may be unable to secure these alternatives in a timely manner, on acceptable terms, or at all. Accordingly, if we were to experience an interruption or reduction in the availability of bonding capacity, we may be unable to compete for, or work on certain projects.

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Our bonding requirements may limit our ability to incur indebtedness, which would limit our ability to refinance our existing credit facilities or to execute our business plan.

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Our ability to obtain surety bonds depends upon various factors including our capitalization, working capital, tangible net worth and amount of our indebtedness. In order to obtain required bonds, we may be limited in our ability to incur additional indebtedness that may be needed to refinance our existing credit facilities upon maturity, to complete acquisitions, and to otherwise execute our business plans.

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We may be unable to win some new contracts if we cannot provide clients with letters of credit.

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For many of our clients, surety bonds provide an adequate form of security, but for some clients, security in the form of a letter of credit may be required. While we have capacity for letters of credit under our credit facility, the amount required by a client may be in excess of our credit limit. Any such amount would be issued at the sole discretion of our lenders. Failure to provide a letter of credit when required by a client may result in our inability to compete for, win, or retain a project.

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During the ordinary course of our business, we may become subject to material lawsuits or indemnity claims.

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We have in the past been, and may in the future be, named as a defendant in lawsuits, claims and other legal proceedings during the ordinary course of our business. These actions may seek, among other things, compensation for alleged personal injury, workers’ compensation, employment discrimination, breach of contract, cyber-security and related incidents, property damage, punitive damages, and civil penalties, or other losses or injunctive or declaratory relief. In addition, we generally indemnify our customers for claims related to the services we provide and actions we take under our contracts with them, and, in some instances, we may be allocated risk through our contract terms for actions by our customers, or other third parties. Because our services in certain instances may be integral to the operation and performance of our customers’ infrastructure, we may become subject to lawsuits or claims for any failure of the systems on which we work, even if our services are not the cause of such failures, and we could be subject to civil and criminal liabilities to the extent that our services contributed to any property damage, personal injury or system failure. The outcome of any of these lawsuits, claims or legal proceedings could result in significant costs and diversion of management’s attention from the business. Payments of significant amounts, even if reserved, could adversely affect our reputation, our cash flows, and our business.

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We are self-insured up to certain limits.

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Although we maintain insurance policies with respect to employer’s liability, general liability, auto and workers compensation claims, those policies are subject to deductibles or self-insured retention amounts up to certain limits applied on an occurrence or claims-made basis. In addition, for our employees not part of a collective bargaining agreement, we provide employee health care benefit plans. Our primary health insurance plan is subject to a deductible per individual claimant per year.

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Our insurance policies include various coverage requirements, including the requirement to give appropriate notice. If we fail to comply with these requirements, our coverage could be denied.

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Losses under our insurance programs are accrued based upon our estimates of the ultimate liability for claims reported and an estimate of claims incurred but not reported, with assistance from third-party actuaries. Insurance liabilities are difficult to assess and estimate due to unknown factors, including the severity of an injury, the extent of damage, the determination of our liability in proportion to other parties and the number of incidents not reported. The accruals are based upon known facts and historical trends.

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We renew our insurance policies on an annual basis, and therefore deductibles and levels of insurance coverage may change in future periods. In addition, insurers may cancel our coverage or determine to exclude certain items from coverage, or we may elect not to obtain certain types or incremental levels of insurance based on the potential benefits considered relative to the cost of such insurance, or coverage may not be available at reasonable and competitive rates. In any such event, our overall risk exposure would increase, which could negatively affect our results of operations, financial condition and cash flows.

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The loss or long-term incapacitation of one or more of our executive officers or other key employees could adversely affect our business and we may not be able to operate and grow our business effectively if we lose the services of any of our key persons or are unable to attract qualified and skilled personnel in the future.

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We are dependent upon the efforts of our key personnel, and our ability to retain them and hire other qualified employees. We depend on the continued and ongoing services of our executive officers and other key employees, including the senior management of our subsidiaries. The loss of our executive officers, or other key personnel could affect our ability to run our business effectively. Competition for senior management is intense, and we may not be able to retain our personnel. The loss of any key person requires the remaining key personnel to divert immediate and substantial attention to seeking a replacement, as well as to performing the departed person’s responsibilities until a replacement is found. In addition, as some of our key persons approach retirement age, we need to provide for smooth transitions. If we fail to find a suitable replacement for any departing executive or senior officer on a timely basis, such departure could adversely affect our ability to operate and grow our business.

In many instances, these employees have significant experience and expertise in our industry. These key employees often possess and maintain key relationships with our customers and subcontractors that would be difficult to

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replace. We do not carry “key-person” life or disability insurance on any of our employees. The loss or long-term incapacitation of any one of our executive officers or other key employees could negatively affect our customer relationships or the ability to execute our business strategy, which could adversely affect our business.

Our business is labor intensive. If we are unable to attract and retain qualified managers and skilled employees, our operating costs may increase.

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Our business is labor intensive and our ability to maintain our productivity and profitability may be limited by our ability to employ, train and retain skilled personnel necessary to meet our requirements. We may not be able to maintain an adequately skilled labor force necessary to operate efficiently and to support our growth strategy. We have from time-to-time experienced, and may in the future experience, shortages of certain types of qualified personnel. For example, periodically there are shortages of engineers, project managers, field supervisors, and other skilled workers capable of working on and supervising the construction of underground, electric utilities, heavy civil and industrial facilities, as well as providing engineering services. The supply of experienced engineers, project managers, field supervisors, journeyman linemen and other skilled workers may not be sufficient to meet current or expected demand. The beginning of new, large-scale infrastructure projects, or increased competition for workers currently available to us, could affect our business, even if we are not awarded such projects. Labor shortages, or increased labor costs, could impair our ability to maintain our business or grow our revenue. If we are unable to hire employees with the requisite skills, we may also be forced to incur significant training expenses.

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Our unionized workforce may commence work stoppages or impact our ability to complete certain acquisitions, which could adversely affect our operations.

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As of December 31, 2024, approximately 22.9% of our hourly employees, primarily consisting of field laborers, were covered by collective bargaining agreements. Although the majority of these agreements prohibit strikes and work stoppages, we cannot be certain that strikes or work stoppages will not occur in the future. Strikes or work stoppages would adversely impact our relationships with our customers and could have an adverse effect on our business.

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Our ability to complete future acquisitions could be adversely affected because of our union status for a variety of reasons. For instance, in certain geographic areas, our union agreements may be incompatible with the union agreements of a business we want to acquire, and some businesses may not want to become affiliated with a union company.

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Withdrawal from multiemployer pension plans associated with our unionized workforce could adversely affect our financial condition and results of operations.

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Our collective bargaining agreements generally require that we participate with other companies in multiemployer pension plans. To the extent those plans are underfunded, the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended by the Multiemployer Pension Plan Amendments Act of 1980 (“MEPA”), may subject us to substantial liabilities under those plans if we withdraw from them, or if they are terminated. In addition, the Pension Protection Act of 2006 added new funding rules for multiemployer plans that are classified as endangered, seriously endangered or critical status. For a plan in critical status, additional required contributions and benefit reductions may apply if a plan is determined to be underfunded, which could adversely affect our financial condition or results of operations. For plans in critical status, we may be required to make additional contributions, generally in the form of surcharges on contributions otherwise required. Participation in those plans with high funding levels could adversely affect our results of operations, financial condition or cash flows if we are not able to adequately mitigate these costs.

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The amount of the withdrawal liability legislated by ERISA and MEPA varies for every pension plan to which we contribute. For each plan, our potential liability is the total unfunded vested benefits of the plan multiplied by a fraction: the numerator of the fraction is the sum of our contributions to the plan for the past ten years and the denominator is the sum of all contributions made by all employers for the past ten years. For some pension plans to which we contribute, the total unfunded vested benefits for the entire plan could be in the billions of dollars. If we cannot reduce the alleged fractional exposure through exemptions or negotiations, the withdrawal from a plan could have a material adverse impact on our business.

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If we fail to integrate acquisitions successfully, we may experience operational challenges and risks which may have an adverse effect on our business.

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As part of our growth strategy, we intend to acquire companies that expand, complement or diversify our business. Acquisitions may expose us to operational challenges and risks, including, among others:

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Failure to effectively manage the integration process could adversely impact our business, financial condition, results of operations, and cash flows.

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We may incur higher costs on equipment necessary for our operations.

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A significant portion of our contracts are performed by utilizing our owned or leased construction equipment rather than short-term rental of equipment. To the extent that we are unable to buy or lease equipment necessary for a project, either due to a lack of available funding, or equipment shortages in the marketplace, we may be forced to rent equipment on a short-term basis, or to find alternative ways to perform the work without the benefit of equipment ideally suited for the job, which could increase the costs of completing the project. We often bid for work knowing that we will have to rent equipment on a short-term basis, and we include the equipment rental rates in our bid. If market rates for rental equipment increase between the time of bid submission and project execution, our margins for the project may be reduced. In addition, our equipment requires regular maintenance, which we generally provide through our own repair facilities. If we are unable to maintain the equipment in our fleet, we may be forced to obtain additional third-party repair services at a higher cost or be unable to bid on contracts.

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Our business may be affected by difficult work sites and environments which may adversely affect our ability to procure materials and labor.

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We perform our work under a variety of conditions, including, but not limited to, difficult and hard to reach terrain, difficult site conditions, and busy urban centers, where delivery of materials and availability of labor may be impacted. Performing work under these conditions can slow our progress, potentially causing us to incur contractual liability to our customers. These difficult conditions may also cause us to incur additional, unanticipated costs that we might not be able to pass on to our customers.

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We may incur liabilities or suffer negative financial or reputational impacts relating to health and safety matters.

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Our operations are subject to extensive laws and regulations relating to the maintenance of safe conditions in the workplace, including OSHA and other state and local laws and regulations. While we have invested, and will continue to invest, substantial resources in our environmental, health and safety programs, our industry involves a high degree of operational risk and there can be no assurance that we will avoid significant liability exposure. Although we have taken what we believe are appropriate precautions, we have suffered fatalities in the past and may suffer additional fatalities in the future. Serious accidents, including fatalities, may subject us to substantial penalties, civil litigation or criminal prosecution. Claims for damages to persons, including claims for bodily injury or loss of life, could result in substantial costs and liabilities, which could materially and adversely affect our financial condition, results of operations or cash flows. In addition, if our safety record were to substantially deteriorate over time or we were to suffer substantial

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penalties or criminal prosecution for violating health and safety regulations, our customers could cancel our contracts and not award us future business.

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Disruptions to our operational systems could adversely impact our operations, our ability to report financial results and our business.

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We rely on computer, information and communication technology and related systems to operate our business and to protect confidential, sensitive company, customer and partner information. Our computer and communications systems, and consequently our operations, could be damaged or interrupted by cyber-attacks and physical security risks, such as natural disasters, loss of power, communications failures, acts of war, acts of terrorism, computer viruses, physical or electronic break-ins and actions by hackers and cyber-terrorists. Any of these, or similar, events could cause system disruptions, delays and loss of critical information, delays in processing transactions and delays in the reporting of financial information.

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Security breaches, cyber security attacks or other disruptions to our information technology systems and networks could adversely impact our operations or compromise the confidentiality of private customer data or our own proprietary information.

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Any cyber security attack (including denial of service attacks, ransomware, phishing attacks, payment fraud or others) that affects our facilities, our systems, our partners, our customers or any of our financial data could have a material adverse effect on our business. We rely on information technology systems, some of which are managed by third parties, to process, transmit and store electronic information and to manage or support a variety of our business processes, activities and services. Additionally, we collect and store sensitive data, including intellectual property and proprietary business information, as well as personally identifiable information of our customers and employees, in data centers and on information technology networks (including networks that may be controlled or maintained by third parties). The secure operation of these systems and products, and the processing and maintenance of the information processed by these systems and products, is critical to our business operations and strategy. Further, customers using our systems rely on the security of our infrastructure, including hardware, software and other elements provided by third parties, to ensure the reliability of our products and the protection of their data. We also face the risk of operational disruption, failure, termination or capacity constraints of any of the third parties that facilitate our business activities, including vendors, service providers, suppliers, customers, counterparties or other financial intermediaries. Such third parties who provide us services or with whom we communicate could also be the source of a cyberattack on, or breach of, our operational systems, network, data or infrastructure. Despite our security measures and business continuity plans, our information technology systems and networked and connected products may be vulnerable to damage, disruptions or shutdowns caused by attacks by hackers, computer viruses, or breaches due to errors or malfeasance by employees, contractors or others who have access to these systems and products. Any of these events could result in, among other things, the loss of proprietary data, interruptions or delays in our business operations and damage to our reputation.

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We have experienced cyber security threats, such as viruses and attacks targeting our systems, and expect the frequency and sophistication of such incidents will continue to increase. Such prior events have not had a material impact on our financial condition, results of operations or liquidity. However, future threats or existing threats of which we are not yet aware could cause harm to our business and our reputation, disrupt our operations, expose us to potential liability, regulatory actions and loss of business, and impact our results of operations materially. We also currently maintain a cyber insurance policy; however, such insurance coverage may not be adequate to cover all the costs related to cyber security attacks or disruptions resulting from such events.

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While we have taken steps to mitigate persistent and continuously evolving cyber security threats by implementing network security and internal control measures, implementing policies and procedures for managing risk to our information systems, periodically testing our information technology systems, and conducting employee training on cyber security, a system or network failure or data security breach could have negative consequences for our company, customers, or partners and adversely affect our business. Furthermore, the continuing and evolving threat of cyber-attacks has resulted in increased regulatory focus on prevention. To the extent we face increased regulatory requirements, we may be required to expend significant additional resources to meet such requirements.

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We may need additional capital in the future for working capital, capital expenditures or acquisitions, and we may not be able to access capital on favorable terms, or at all, which would impair our ability to operate our business or achieve our growth objectives.

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Our ability to generate cash is essential for the funding of our operations and the servicing of our debt. If existing cash balances together with the borrowing capacity under our credit facilities were not sufficient to make future investments, make acquisitions or provide needed working capital, we may require financing from other sources. Our ability to obtain such additional financing in the future will depend on a number of factors including prevailing capital market conditions, conditions in our industry, and our operating results. These factors may affect our ability to arrange additional financing on terms that are acceptable to us. If additional funds were not available on acceptable terms, we may not be able to make future investments, take advantage of acquisitions or pursue other opportunities.

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Risks Related Primarily to the Financial Accounting of our Business

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Our financial results are based upon estimates and assumptions that may differ from actual results.

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In preparing our consolidated annual and quarterly financial statements in conformity with generally accepted accounting principles, many estimates and assumptions are used in determining the reported revenue, costs and expenses recognized during the periods presented, and disclosures of contingent assets and liabilities known to exist as of the date of the financial statements. These estimates and assumptions must be made because certain information that is used in the preparation of our financial statements cannot be calculated with a high degree of precision from data available, is dependent on future events, or is not capable of being readily calculated based on generally accepted methodologies. Often, these estimates are particularly difficult to determine, and we must exercise significant judgment. Estimates may be used in our assessments of the allowance for credit losses, useful lives of property and equipment, fair value assumptions in analyzing goodwill and long-lived asset impairments, self-insured claims liabilities, accounting for revenue recognized over time, and the provision for income taxes. Actual results could differ materially from the estimates and assumptions that we used.

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Our accounting for revenue recognized over time could result in a reduction or elimination of previously reported revenue and profit.

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For contracts where scope is adequately defined, and therefore we can reasonably estimate total contract value, we recognize revenue over time as work is completed because of the continuous transfer of control to the customer (typically using an input measure such as costs incurred to date relative to total estimated costs at completion to measure progress). Accounting for long-term contracts involves the use of various techniques to estimate total transaction price and costs. For long-term contracts, transaction price, estimated cost at completion and total costs incurred to date are used to calculate revenue earned. Unforeseen events and circumstances can alter the estimate of the costs and potential profit associated with a particular contract. Total estimated costs, and thus contract revenue and income, can be impacted by changes in productivity, scheduling, the unit cost of labor, subcontracts, materials and equipment. Additionally, external factors such as weather, client needs, client delays in providing permits and approvals, labor availability, governmental regulation, and politics may affect the progress of a project’s completion, and thus the timing of revenue recognition. Actual results could differ from estimated amounts and could result in a reduction or elimination of previously recognized earnings. In certain circumstances, it is possible that such adjustments could be significant and could have an adverse effect on our business.

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Our reported results of operations could be adversely affected as a result of impairments of goodwill or other identifiable intangible assets.

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When we acquire a business, we record an asset called “goodwill” for the excess amount we pay for the business over the net fair value of the tangible and identifiable intangible assets of the business we acquire. At December 31, 2024, our balance sheet included goodwill of $856.9 million and intangible assets of $207.9 million resulting from previous acquisitions. Fair value is determined using a combination of the discounted cash flow, market multiple and market capitalization valuation approaches. Under current accounting rules, goodwill and other identifiable intangible assets that have indefinite useful lives cannot be amortized, but instead must be tested at least annually for impairment, while identifiable intangible assets that have finite useful lives are amortized over their useful lives. Significant judgment is required in completing these tests, as described in Item 7. “Management’s Discussion and

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Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates— Goodwill and Indefinite-Lived Intangible Assets” of this Annual Report on Form 10-K. Any impairment of goodwill, or identifiable intangible assets recorded in connection with the various acquisitions, or for any future acquisitions, would negatively impact our results of operations.

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Compliance with and changes in tax laws could adversely affect our performance.

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We are subject to extensive tax liabilities imposed by multiple jurisdictions, including federal, state, local and international jurisdictions. New tax laws, treaties and regulations and changes in existing tax laws, treaties and regulations are continuously being enacted or proposed and could result in a different tax rate on our earnings, which could have a material impact on our earnings and cash flow from operations. In addition, significant judgment is required in determining our provision for income taxes, as described in Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates—Income Taxes” of this Annual Report on Form 10-K. In the ordinary course of our business, there are many transactions and calculations where the ultimate tax determination is uncertain. We are regularly subject to audits by tax authorities, and our tax estimates and tax positions could be materially affected by many factors including the final outcome of tax audits and related litigation, the introduction of new tax accounting standards, legislation, regulations and related interpretations, our mix of earnings, the realizability of deferred tax assets and changes in uncertain tax positions. A significant increase in our tax rate could have a material adverse effect on our profitability and liquidity.

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Our variable rate indebtedness subjects us to interest rate risk.

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Borrowings under our revolving credit facility and term loan bear interest at variable rates and expose us to interest rate risk. From time to time, we may use certain derivative instruments to hedge our exposure to variable interest rates. As of December 31, 2024, $300.0 million of our variable rate debt outstanding was economically hedged. The interest rate swap matured on January 31, 2025. The remaining $376.9 million of variable rate debt was unhedged. If interest rates increase, our debt service obligations on the unhedged portion of our variable rate debt will increase even if the amount borrowed remains the same, and our net income and cash flows, will decrease correspondingly. Based on our variable rate debt outstanding as of December 31, 2024, a 1.0% increase or decrease in interest rates would change annual interest expense by approximately $3.8 million.

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Risks Related to our Common Stock

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Our common stock is subject to potential dilution to our stockholders.

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As part of our acquisition strategy, we have issued and used shares of common stock as a part of contingent earn-out consideration, which have resulted in dilution to our stockholders. Our Certificate of Incorporation permits us to issue up to 90.0 million shares of common stock of which approximately 53.7 million were outstanding at December 31, 2024. While New York Stock Exchange rules require that we obtain stockholder approval to issue more than 20% additional shares, stockholder approval is not required below that level. In addition, we can issue shares of preferred stock which could cause further dilution to the stockholder, resulting in reduced net income and cash flow available to common stockholders.

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In 2022, our stockholders adopted the 2022 Employee Stock Purchase Plan (the “ESPP”), under which eligible full-time employees can purchase shares of our common stock at a discount on a semi-annual basis. The number of shares authorized and available for purchase under the ESPP is 1.0 million. As of December 31, 2024, there were 960,496 shares of common stock remaining available for purchase. Additional purchases made under the ESPP will have the effect of diluting our earnings per share and stockholders’ percentage of ownership.

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In 2023, our stockholders adopted our 2023 Equity Incentive Plan (“2023 Equity Plan”). The 2023 Equity Plan replaced a previous equity plan. The 2023 Equity Plan authorized the Board of Directors to issue equity awards totaling 6.5 million shares of our common stock. As of December 31, 2024, there were 5.8 million shares of common stock remaining available for issuance under our 2023 Equity Plan. Equity awards made to our directors and employees will have the effect of diluting our earnings per share and stockholders’ percentage of ownership.

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Delaware law and our charter documents may impede or discourage a takeover or change in control.

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As a Delaware corporation, anti-takeover provisions may impose an impediment to the ability of others to acquire control of us, even if a change of control would be of benefit to our stockholders. In addition, certain provisions of our Certificate of Incorporation and Bylaws also may impose an impediment or discourage others from a takeover. These provisions include: restrictions on the ability of a stockholder to call a special meeting, or nominate a director for election and our Board of Directors’ ability to authorize the issuance of preferred shares.

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These types of provisions may limit the ability of stockholders to obtain a premium for their shares.

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None.

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As of the date of this report, we are not aware of any known cybersecurity threats that have materially affected or are reasonably likely to materially affect the Company, including our business strategy, results of operations or financial condition. However, as discussed under Part I, Item 1A. “Risk Factors, specifically the risks titled “Disruptions to our operational systems could adversely impact our operations, our ability to report financial results and our business” and “Security breaches, cyber security attacks or other disruptions to our information technology systems and networks could adversely impact our operations or compromise the confidentiality of private customer data or our own proprietary information,” the sophistication of cyber threats continues to increase, and the preventative actions we take to reduce the risk of cyber incidents and protect our systems and information may be insufficient. Accordingly, no matter how well designed or implemented our controls are, we will not be able to anticipate all security breaches, and we may

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not be able to implement effective preventive measures against such security breaches in a timely manner, which could materially affect us, including our business operations, results of operations or financial condition.

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Facilities

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We lease our executive offices in Dallas, Texas and own and lease other facilities throughout the United States and Canada. Our facilities include offices, production yards, maintenance shops, and training and education facilities that are used in our operations by both of our segments. As of December 31, 2024, we owned 46 of our facilities and leased the remainder. We believe that our facilities are adequate to meet our current and foreseeable requirements.

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Property, Plant and Equipment

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The construction industry is capital intensive, and we expect to continue making capital expenditures to meet anticipated needs for our services. In 2024, we spent approximately $126.6 million for capital expenditures, which included $81.9 million on our facilities and $36.6 million for construction equipment.

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We believe the ownership or long-term leasing of equipment is generally preferable to renting to ensure the equipment is available as needed. In addition, this approach has historically resulted in lower overall equipment costs. All equipment is subject to scheduled maintenance to help ensure reliability. Maintenance facilities exist at most of our regional offices, as well as on-site on major projects to properly service and repair equipment. Major equipment not currently utilized is rented to third parties or sold whenever possible.

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Legal Proceedings

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For information regarding legal proceedings, see Note 12 — “Commitments and Contingencies” of the Notes to Consolidated Financial Statements included in Item 8. “Financial Statements And Supplementary Data” of this Annual Report on Form 10-K, which is incorporated herein by reference.

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Not applicable.

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PART II

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Market Information

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Our common stock is listed on the New York Stock Exchange under the symbol “PRIM”. We had outstanding 53,747,628 shares of common stock and 335 stockholders of record as of February 18, 2025. These stockholders of record include depositories that hold shares of stock for brokerage firms, which in turn, hold shares of stock for numerous beneficial owners.

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Dividends

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We have paid consecutive quarterly cash dividends since 2008, and currently expect that comparable cash dividends will continue to be paid for the foreseeable future. In October of 2024 we increased the quarterly cash dividend from $0.06 per share to $0.08 per share. The declaration and payment of future dividends is contingent upon our revenue and earnings, capital requirements, and general financial conditions, as well as contractual restrictions and other considerations deemed to be relevant by the Board of Directors.

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Performance Graph

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The following Performance Graph and related information shall not be deemed to be filed with the SEC, nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that we specifically incorporate it by reference into such filing.

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The following graph compares the cumulative total return to holders of our common stock during the five-year period from December 31, 2019, and in each quarter through December 31, 2024. The return is compared to the cumulative total return during the same period achieved on the Standard & Poor’s 500 Stock Index (the “S&P 500”) and a peer group index selected by our management that includes five public companies within our industry (the “Peer Group”). The companies in the Peer Group were selected because they comprise a broad group of publicly held corporations, each of which has some operations similar to ours. When taken as a whole, management believes the Peer Group more closely resembles our total business than any individual company in the group. The Peer Group is composed of MasTec, Inc., MYR Group, Inc., Dycom Industries, Inc., Sterling Construction Company, Inc. and Granite Construction, Inc.

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The returns are calculated assuming that an investment with a value of $100 was made in our common stock, the S&P 500 and the Peer Group as of December 31, 2019. All dividends were reinvested in additional shares of common stock. The Peer Group investment is weighted based on the market capitalization of each company at the measurement period. The graph lines merely connect the measuring dates and do not reflect fluctuations between those dates. The stock performance shown on the graph is not intended to be indicative of future stock performance.

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COMPARISON OF DECEMBER 31, 2019 THROUGH DECEMBER 31, 2024

CUMULATIVE TOTAL RETURN

Among Primoris Services Corporation (“PRIM”), the S&P 500 and the Peer Group

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ITEM 6. [RESERVED]

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You should read the following discussion of our financial condition and results of operations in conjunction with the financial statements and the notes to those statements included in Item 8. “Financial Statements And Supplementary Data” in this Annual Report on Form 10-K. This discussion includes forward-looking statements that are based on current expectations and are subject to uncertainties and unknown or changed circumstances. For a further discussion, please see “Forward-Looking Statements” at the beginning of this Annual Report on Form 10-K. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of many factors, including those risks inherent with our business as discussed in Item 1A. “Risk Factors”.

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The following discussion starts with an overview of our business and a discussion of trends, including seasonality, that affect our industry. That is followed by an overview of the critical accounting policies and estimates that we use to prepare our financial statements. Next, we discuss our results of operations and liquidity and capital resources, including our off-balance sheet arrangements and contractual obligations. We conclude with a discussion of our outlook and backlog.

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Introduction

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We are one of the leading providers of infrastructure services operating mainly in the United States and Canada. We provide a wide range of construction, maintenance, replacement, fabrication, and engineering services to a diversified base of customers through our two segments: Utilities and Energy. The structure of our reportable segments is generally focused on broad end-user markets for our services.

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The Utilities segment operates throughout the United States and specializes in a range of services, including the installation and maintenance of new and existing natural gas and electric utility distribution and transmission systems, and communications systems.

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The Energy segment operates throughout the United States and Canada and specializes in a range of services that include engineering, procurement, construction, and maintenance services for entities in the energy, renewable energy and energy storage, renewable fuels, and petroleum and petrochemical industries, as well as state departments of transportation.

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We have longstanding customer relationships with solar facility developers and utility, refining, petrochemical, communications, midstream, downstream, and engineering companies, as well as power producers and transportation agencies across our core markets. We have completed major underground and industrial projects for a number of large natural gas transmission and petrochemical companies in the United States and major electrical and gas projects for a number of large utility companies in the United States. We enter into a large number of contracts each year, and the projects can vary in length from daily work orders to as long as 36 months, and occasionally longer, for completion on larger projects. Although we have not been dependent upon any one customer in any year, a small number of customers tend to constitute a substantial portion of our total revenue in any given year.

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We generate revenue under a range of contracting types, including fixed-price, unit-price, time and material, and cost reimbursable plus fee contracts, each of which has a different risk profile. For the years ended December 31, 2024, 2023, and 2022, $4.7 billion, $3.9 billion, and $2.7 billion, respectively of our revenue is derived from contracts where scope is adequately defined, and therefore we can reasonably estimate total contract value. For these contracts, revenue is recognized over time as work is completed because of the continuous transfer of control to the customer (typically using an input measure such as costs incurred to date relative to total estimated costs at completion to measure progress). For certain contracts, where scope is not adequately defined and we can’t reasonably estimate total contract value, revenue is recognized either on an input basis, based on contract costs incurred as defined within the respective contracts, or an output basis based on units completed. Costs to obtain contracts are generally not significant and are expensed in the period incurred.

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The classification of revenue, gross profit, and operating income for segment reporting purposes can at times require judgment on the part of management. Our segments may perform services across industries or perform joint

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services for customers in multiple industries. To determine reportable segment gross profit and operating income, certain allocations, including allocations of shared and indirect costs, such as facility costs, equipment costs, selling, general, and administrative expenses (“SG&A”) and indirect operating expenses were made.

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Acquisition of PLH

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On August 1, 2022, we acquired PLH Group, Inc. (“PLH”) in an all-cash transaction valued at approximately $429.0 million, net of cash acquired. PLH is a utility-focused infrastructure services company with concentrations in key fast-growing regions of the United States. The transaction directly aligns with our strategic focus on higher-growth, higher margin markets and expands our capabilities in the utility markets including power delivery, communications, and gas utilities. The total purchase price was funded through a combination of borrowings under our Third Amended and Restated Credit Agreement, dated as of August 1, 2022, which increased our term loan to an aggregate principal amount of $945.0 million (the “Term Loan”) and borrowings under our revolving credit facility, in which the lenders agreed to make loans on a revolving basis from time to time and to issue letters of credit for up to $325.0 million (the “Revolving Credit Facility”). We incorporated the majority of the PLH operations into our Utilities segment with the remaining operations going to our Energy segment.

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Acquisition of B Comm Holdco, LLC

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On June 8, 2022, we acquired B Comm Holdco, LLC (“B Comm”) in an all-cash transaction of approximately $36.0 million, net of cash acquired. B Comm was incorporated into our Utilities segment and is a provider of maintenance, repair, upgrade and installation services to the communications markets. The transaction directly aligns with the strategy to grow our Master Services Agreement (“MSA”) revenue base and expand our communication services within the utility segment. The total purchase price was funded with borrowings under our Revolving Credit Facility.

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Business Environment

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We believe there are growth opportunities across the industries we serve and we continue to have a positive long-term outlook. Although not without risks and challenges, including those discussed below and in Forward-Looking Statements and included in Item 1A. “Risk Factors,” we believe, with our full-service offerings, broad geographic reach, stable financial position and technical expertise, we are well positioned to capitalize on opportunities and trends in our industries.

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We have seen and continue to anticipate potential changes to the regulatory and environmental requirements for many of our clients’ infrastructure projects, which may impact the timing and certainty of projects. While permitting and other regulatory challenges create uncertainty as to the timing of some of our opportunities, we continue to see consistent investment activity across a wide range of projects in the end markets we serve. We believe that we have the financial and operational strength to meet the challenge of either short-term delays or significant increases in work. We continue to be optimistic about both short and longer-term opportunities. Our current outlook for our primary end markets is as follows:

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Material Trends and Uncertainties

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We generate our revenue from construction and engineering projects, as well as from providing a variety of infrastructure services. We depend in part on spending by companies in the communications, gas and electric utilities, energy, chemical, and pipeline industries, as well as state departments of transportation. Over the past several years, each segment has benefited from demand for more efficient and more environmentally friendly energy and power facilities, more reliable gas and electric utility infrastructure, and upgraded and expanded local highway and bridge needs. However, periodically, each of these industries and government agencies is adversely affected by macroeconomic conditions and other challenging market conditions, such as those that have caused declines in the pipeline industry. Economic and other factors outside of our control may affect the amount and size of contracts we are awarded in any particular period.

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We actively monitor the impact of the macroeconomic environment, including the impact of inflation, tariffs, and volatility in the commodities markets, on all aspects of our business. We have experienced increased operating costs and anticipate that elevated levels of cost inflation could persist in 2025. In an effort to mitigate the impacts of inflation on our operations, we attempt to recover increases in the cost of labor, equipment, fuel and materials through price escalation provisions that allow us to adjust billing rates for certain major contracts annually; by considering the estimated effect of such increases when bidding or pricing new work; or by entering into back-to-back contracts with suppliers and subcontractors. However, the annual adjustment provided by certain contracts is typically subject to a cap and there can be an extended period of time between the impact of inflation on our costs and when billing rates are adjusted. In some cases, our actual cost increases have exceeded the contractual caps, and therefore negatively impacted the profitability of our operations until the contracts have been renegotiated to reflect these higher costs.

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Fluctuations in the market prices of oil, gas and other fuel sources have affected demand for our services. Volatility in the prices of oil, gas, and liquid natural gas that has occurred in recent years has created uncertainty with respect to demand for our pipeline services, both in the near term and for future projects. While the construction of gathering lines within the oil shale formations may remain at lower levels for a period, we believe that over time, the need for pipeline infrastructure for midstream and gas utility companies will result in a continuing need for our services.

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The continuing changes in the regulatory environment have affected the demand for our services, either by increasing our work, delaying projects, or cancelling projects. For example, environmental laws and regulations have provided challenges to pipeline projects, resulting in delays or cancellations that impact the timing of revenue recognition. However, the regulatory environment in certain states has resulted in an increase in the construction of gas-fired power plants. In addition, increased demand for electric power is also expanding opportunities for our Energy segment, such as the need for battery storage and the construction of utility scale solar facilities, and natural gas generation facilities.

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We are exposed to certain market risks related to changes in interest rates. To monitor and manage these market risks, we have established risk management policies and procedures. Our Revolving Credit Facility and Term Loan bear interest at a variable rate which exposes us to interest rate risk. From time to time, we may use certain derivative instruments to hedge our exposure to variable interest rates. As of December 31, 2024, $300.0 million of our variable rate debt outstanding was economically hedged. The interest rate swap matured on January 31, 2025. Based on our variable rate debt outstanding as of December 31, 2024, a 1.0% increase or decrease in interest rates would change annual interest expense by approximately $3.8 million.

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Seasonality, Cyclicality and Variability

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Our results of operations are subject to quarterly variations. Some of the variation is the result of weather, particularly rain, ice, snow, and named storms, which can impact our ability to perform infrastructure services. These seasonal impacts can affect revenue and profitability in all of our businesses. Any quarter can be affected either negatively, or positively by atypical weather patterns in any part of the country. In addition, demand for new projects in our Utilities segment tends to be lower during the early part of the calendar year due to clients’ internal budget cycles. As

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a result, we usually experience higher revenue and earnings in the second, third and fourth quarters of the year as compared to the first quarter.

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Our project values range in size from several hundred dollars to several hundred million dollars. The bulk of our work is comprised of project sizes that average less than $3.0 million. We also perform construction projects which tend not to be seasonal, but can fluctuate from year to year based on customer timing, project duration, weather, and general economic conditions. Our business may be affected by declines, or delays in new projects, or by client project schedules. Because of the cyclical nature of some of our business, the financial results for any period may fluctuate from prior periods, and our financial condition and operating results may vary from quarter to quarter. Results from one quarter may not be indicative of our financial condition, or operating results for any other quarter, or for an entire year.

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Critical Accounting Policies and Estimates

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General—The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the date of the financial statements, and also affect the amounts of revenue and expenses reported for each period. These estimates and assumptions must be made because certain information that is used in the preparation of our financial statements cannot be calculated with a high degree of precision from data available, is dependent on future events, or is not capable of being readily calculated based on generally accepted methodologies. Often, estimates are particularly difficult to determine, and we must exercise significant judgment. Estimates may be used in our accounting for revenue recognized over time, the allowance for credit losses, useful lives of property and equipment, fair value assumptions in analyzing goodwill and long-lived asset impairments, self-insured claims liabilities and deferred income taxes. Actual results could materially differ from those that result from using the estimates under different assumptions or conditions.

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An accounting policy is deemed to be critical if i) it requires an accounting estimate to be based on assumptions about matters that are highly uncertain at the time the estimate is made, ii) different estimates could have reasonably been used, or iii) changes in the accounting estimates that are reasonably likely to occur periodically could materially impact our consolidated financial statements.

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The following accounting policies require critical accounting estimates that are based on, among other things, judgments and assumptions made by management that include inherent risks and uncertainties. Management’s estimates are based on the relevant information available at the end of each period. We periodically review these accounting policies and critical accounting estimates with the Audit Committee of the Board of Directors.

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Revenue recognition — We generate revenue under a range of contracting types, including fixed-price, unit-price, time and material, and cost reimbursable plus fee contracts, each of which has a different risk profile. A portion of our revenue is derived from contracts where scope is adequately defined, and therefore we can reasonably estimate total contract value. For these contracts, revenue is recognized over time as work is completed because of the continuous transfer of control to the customer (typically using an input measure such as costs incurred to date relative to total estimated costs at completion to measure progress). For certain contracts, where scope is not adequately defined and we can’t reasonably estimate total contract value, revenue is recognized either on an input basis, based on contract costs incurred as defined within the respective contracts, or an output basis based on units completed. Costs to obtain contracts are generally not significant and are expensed in the period incurred.

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We evaluate whether two or more contracts should be combined and accounted for as one single performance obligation and whether a single contract should be accounted for as more than one performance obligation. Accounting Standards Codification (“ASC”) 606 defines a performance obligation as a contractual promise to transfer a distinct good or service to a customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. Our evaluation requires significant judgment and the decision to combine a group of contracts or separate a contract into multiple performance obligations could change the amount of revenue and profit recorded in a given period. The majority of our contracts have a single performance obligation, as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contract and, therefore, is not distinct. However, occasionally we have contracts with multiple performance obligations. For contracts with multiple performance obligations, we allocate the contract’s transaction price to each performance obligation using the observable standalone selling price, if available, or alternatively our best

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estimate of the standalone selling price of each distinct performance obligation in the contract. The primary method used to estimate standalone selling price is the expected cost plus a margin approach for each performance obligation.

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Accounting for long-term contracts involves the use of various techniques to estimate total transaction price and costs. For long-term contracts, transaction price, estimated cost at completion and total costs incurred to date are used to calculate revenue earned. Unforeseen events and circumstances can alter the estimate of the costs and potential profit associated with a particular contract. Total estimated costs, and thus contract revenue and income, can be impacted by changes in productivity, scheduling, the unit cost of labor, subcontracts, materials and equipment. Additionally, external factors such as weather, client needs, client delays in providing permits and approvals, labor availability, governmental regulation, politics and any prevailing impacts from pandemics or epidemics may affect the progress of a project’s completion, and thus the timing of revenue recognition. To the extent that original cost estimates are modified, estimated costs to complete increase, delivery schedules are delayed, or progress under a contract is otherwise impeded, cash flow, revenue recognition and profitability from a particular contract may be adversely affected.

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The nature of our contracts gives rise to several types of variable consideration, including contract modifications (change orders and claims), liquidated damages, volume discounts, performance bonuses, incentive fees, and other terms that can either increase or decrease the transaction price. We estimate variable consideration as the most likely amount to which we expect to be entitled. We include estimated amounts in the transaction price to the extent we believe we have an enforceable right, and it is probable that a significant reversal of cumulative revenue recognized will not occur. Our estimates of variable consideration and the determination of whether to include estimated amounts in the transaction price are based largely on an assessment of our anticipated performance and all information (historical, current and forecasted) that is reasonably available to us at this time.

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Contract modifications result from changes in contract specifications or requirements. We consider unapproved change orders to be contract modifications for which customers have not agreed to both scope and price. We consider claims to be contract modifications for which we seek, or will seek, to collect from customers, or others, for customer-caused changes in contract specifications or design, or other customer-related causes of unanticipated additional contract costs on which there is no agreement with customers. Claims can also be caused by non-customer-caused changes, such as rain or other weather delays. Costs associated with contract modifications are included in the estimated costs to complete the contracts and are treated as project costs when incurred. In most instances, contract modifications are for goods or services that are not distinct, and, therefore, are accounted for as part of the existing contract. The effect of a contract modification on the transaction price, and our measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue on a cumulative catch-up basis. In some cases, settlement of contract modifications may not occur until after completion of work under the contract.

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As a significant change in one or more of these estimates could affect the profitability of our contracts, we review and update our contract-related estimates regularly. We recognize adjustments in estimated profit on contracts under the cumulative catch-up method. Under this method, the cumulative impact of the profit adjustment is recognized in the period the adjustment is identified. Revenue and profit in future periods of contract performance are recognized using the adjusted estimate. If at any time the estimate of contract profitability indicates an anticipated loss on a contract, the projected loss is recognized in full, including any previously recognized profit, in the period it is identified and recognized as an “accrued loss provision” which is included in “Contract liabilities” on the Consolidated Balance Sheets. For contract revenue recognized over time, the accrued loss provision is adjusted so that the gross profit for the contract remains zero in future periods.

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At December 31, 2024, we had approximately $220.8 million of unapproved contract modifications included in the aggregate transaction prices. These unapproved contract modifications were in the process of being negotiated in the normal course of business. Approximately $206.1 million of the unapproved contract modifications had been recognized as revenue on a cumulative catch-up basis through December 31, 2024.

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In all forms of contracts, we estimate the collectability of contract amounts at the same time that we estimate project costs. If we anticipate that there may be issues associated with the collectability of the full amount calculated as the transaction price, we may reduce the amount recognized as revenue to reflect the uncertainty associated with realization of the eventual cash collection. For example, when a cost reimbursable project exceeds the client’s expected budget amount, the client frequently requests an adjustment to the final amount. Similarly, some utility clients reserve the right to audit costs for significant periods after performance of the work.

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The timing of when we bill our customers is generally dependent upon agreed-upon contractual terms, milestone billings based on the completion of certain phases of the work, or when services are provided. Sometimes, billing occurs subsequent to revenue recognition, resulting in unbilled revenue, which is a contract asset. However, we sometimes receive advances or deposits from our customers before revenue is recognized, resulting in deferred revenue, which is a contract liability.

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The caption “Contract assets” in the Consolidated Balance Sheets represents the following:

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The caption “Contract liabilities” in the Consolidated Balance Sheets represents the following:

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Business combinations—We use the fair value of the consideration paid and the fair value of the assets acquired and liabilities assumed to account for the purchase price of businesses we acquire. The determination of fair value requires estimates and judgments of future cash flow expectations for the assignment of the fair values to the identifiable tangible and intangible assets.

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Identifiable Tangible Assets. Significant identifiable tangible assets acquired would include accounts receivable, contract assets, leases and fixed assets (generally consisting of facilities and construction equipment). We determine the fair value of these assets as of the acquisition date. For current assets and current liabilities of an acquisition, we will evaluate whether the book value is equivalent to fair value due to their short term nature. We estimate the fair value of fixed assets using a market approach, based on comparable market values for similar equipment of similar condition and age.

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Identifiable Intangible Assets. When necessary, we use the assistance of an independent third-party valuation specialist to determine the fair value of the intangible assets acquired. Third-party specialists are used to help us identify and separate intangible assets apart from goodwill such as customer relationships and tradenames. Fair value is determined by analyzing revenue trends, expected growth rates for existing customers, customer attrition rates, royalty rates, discount rates and intended use of future assets.

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A liability for contingent consideration based on future earnings is estimated at its fair value at the date of acquisition, with subsequent changes in fair value recorded in earnings as a gain or loss. Fair value is estimated as of the acquisition date based on management’s best estimate of potential earnout payments.

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Accounting principles generally accepted in the United States provide a “measurement period” of up to one year in which to finalize all fair value estimates associated with the acquisition of a business. Most estimates are preliminary until the end of the measurement period. During the measurement period, adjustments to initial valuations and estimates that reflect newly discovered information that existed at the acquisition date are recorded. After the measurement date, any adjustments would be recorded as a current period gain or loss.

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Goodwill and Indefinite-Lived Intangible Assets—Goodwill and certain intangible assets acquired in a business combination and determined to have indefinite useful lives are not amortized but are assessed for impairment annually and more frequently if triggering events occur. In performing these assessments, management relies on various factors, including operating results, business plans, economic projections, anticipated future cash flows, comparable

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transactions and other market data. There are inherent uncertainties related to these factors and judgment in applying them to the analysis of goodwill for impairment. Since judgment is involved in performing fair value measurements used in goodwill impairment analyses, there is risk that the carrying values of our goodwill may not be properly stated.

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We account for goodwill, including evaluation of any goodwill impairment under ASC 350, “Intangibles — Goodwill and Other”, performed at the reporting unit level for those units with recorded goodwill as of October 1 of each year, unless there are indications requiring a more frequent impairment test.

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Under ASC 350, we can assess qualitative factors to determine if a quantitative impairment test of intangible assets is necessary. Our qualitative assessment is used to determine whether it is more likely than not (that is, a likelihood of more than 50 percent) that the fair value of the reporting unit is less than its carrying value, including goodwill. Factors used in our qualitative assessment include, but are not limited to, macroeconomic conditions, industry and market conditions, cost factors, overall financial performance and Company and reporting unit specific events. If deemed necessary, we use the quantitative impairment test outlined in ASC 350, which compares the fair value of a reporting unit with its carrying amount. Fair value for the goodwill impairment test is determined utilizing a discounted cash flow analysis based on our financial plan discounted using our weighted average cost of capital and market indicators of terminal year cash flows. Other valuation methods may be used to corroborate the discounted cash flow method. If the carrying amount of a reporting unit is in excess of its fair value, goodwill is considered impaired and an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill of the reporting unit.

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There were no impairments of goodwill for the years ended December 31, 2024, 2023 and 2022.

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Income taxes—We account for income taxes under the asset and liability method as set forth in ASC 740, “Income Taxes”, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting bases and tax bases of assets and liabilities using enacted tax rates in effect for the years in which the differences are expected to reverse. The effect of changes in tax rates on net deferred tax assets or liabilities is recognized as an increase or decrease in net income in the period the tax change is enacted.

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Deferred tax assets may be reduced by a valuation allowance if, in the judgment of management, it is more likely than not that all or a portion of a deferred tax asset will not be realized. In making such determination, we consider all available evidence, including recent financial operations, projected future taxable income, scheduled reversals of deferred tax liabilities, tax planning strategies, and the length of tax asset carryforward periods. The realization of deferred tax assets is primarily dependent upon our ability to generate sufficient future taxable earnings in certain jurisdictions. If we subsequently determine that some or all deferred tax assets that were previously offset by a valuation allowance are realizable, the value of the deferred tax assets would be increased by reducing the valuation allowance, thereby increasing income in the period when that determination is made.

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A tax position is recognized as a benefit only if it is more likely than not that the tax position would be sustained based on its technical merits in a tax examination, using the presumption that the tax authority has full knowledge of all relevant facts regarding the position. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on ultimate settlement with the tax authority. For tax positions not meeting the more likely than not test, no tax benefit is recorded.

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Based on our results for the year ended December 31, 2024, a one-percentage point increase in our effective tax rate would have resulted in an increase in our income tax expense of approximately $2.5 million.

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Litigation and contingencies—Litigation and contingencies are included in our consolidated financial statements based on our assessment of the expected outcome of litigation proceedings or the expected resolution of the contingency. We record costs related to contingencies when a loss from such claims is probable and the amount is reasonably estimable. In determining whether it is possible to provide an estimate of loss, or range of possible loss, we review and evaluate litigation and regulatory matters on a quarterly basis in light of potentially relevant factual and legal developments. If we determine an unfavorable outcome is not probable or reasonably estimable, we do not accrue for a potential litigation loss. Management is unable to ascertain the ultimate outcome of other claims and legal proceedings;

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however, after review and consultation with counsel and taking into consideration relevant insurance coverage and related deductibles/self-insurance retention, management believes that it has meritorious defenses to the claims and believes that the reasonably possible outcome of such claims will not, individually or in the aggregate, have a material adverse effect on our consolidated results of operations, financial condition or cash flows. See Note 12 — “Commitments and Contingencies” of the Notes to Consolidated Financial Statements included in Item 8. “Financial Statements And Supplementary Data” of this Annual Report on Form 10-K for further information.

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Recently Issued Accounting Pronouncements

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See Note 2 — “Summary of Significant Accounting Policies – Recently Issued Accounting Pronouncements” of the Notes to Consolidated Financial Statements included in Item 8. “Financial Statements And Supplementary Data” of this Annual Report on Form 10-K for a discussion of recently issued accounting pronouncements.

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Results of Operations

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Consolidated Results

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Revenue

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2024 and 2023

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Revenue for the year ended December 31, 2024 increased by $0.7 billion, or 11.4%, compared to 2023. The increase was primarily due to growth in our Energy segment.

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2023 and 2022

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Revenue for the year ended December 31, 2023 increased by $1.3 billion, or 29.3%, compared to 2022. The increase was primarily due to growth in both our Energy and Utilities segments, and the acquisitions of PLH and B Comm in 2022.

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Gross Profit

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2024 and 2023

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For the year ended December 31, 2024, gross profit increased by $115.8 million, or 19.7%, compared to 2023. The increase was primarily due to an increase in revenue. Gross profit as a percentage of revenue increased to 11.0% compared to 10.3% for the same period in 2023, primarily driven by improved margins in our Utilities segment.

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2023 and 2022

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For the year ended December 31, 2023, gross profit increased by $130.6 million, or 28.6%, compared to 2022. The increase was primarily due to an increase in revenue. Gross profit as a percentage of revenue remained consistent at 10.3% compared to the same period in 2022.

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Selling, general and administrative expenses

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SG&A expenses consist primarily of compensation and benefits to executive, management level and administrative employees, marketing and communications, professional fees, rent for facilities and utilities.

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2024 and 2023

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SG&A expenses were $383.4 million for the year ended December 31, 2024, an increase of $54.6 million, or 16.6% compared to 2023, primarily due to increased people costs to support revenue growth as well as higher technology

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costs associated with ongoing initiatives. SG&A expense as a percentage of revenue for the year ended December 31, 2024 increased slightly to 6.0% compared to 5.8% for the year ended December 31, 2023.

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2023 and 2022

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SG&A expenses were $328.7 million for the year ended December 31, 2023, an increase of $47.2 million, or 16.7% compared to 2022, primarily due to higher incentive compensation costs associated with improved operational performance and increases in headcount from the acquisitions of PLH and B Comm. SG&A expense as a percentage of revenue for the year ended December 31, 2023 decreased to 5.8% compared to 6.4% for the year ended December 31, 2022, primarily due to increased revenue.

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Transaction and related costs

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2024 and 2023

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Transaction and related costs for the year ended December 31, 2024 were $2.4 million, a decrease of $3.2 million or 57.0% compared to 2023 primarily related to a decrease in integration costs for the PLH acquisition.

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2023 and 2022

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Transaction and related costs for the year ended December 31, 2023 were $5.7 million, a decrease of $14.4 million or 71.7% compared to 2022. The decrease was due to professional fees paid to advisors for the acquisitions of B Comm and PLH in 2022.

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Gain on Sale and Leaseback Transaction

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On June 22, 2022, we completed a sale and leaseback transaction of land and buildings located in Carson, California for an aggregate sales price, net of closing costs, of $49.9 million. Under the transaction, the land, buildings and improvements were sold and leased back for an initial term of three years. The property qualified for sale and leaseback treatment and is classified as an operating lease. Therefore, we recorded a gain on the transaction of $40.1 million. The gain is included in Gain on sale and leaseback transaction on our Consolidated Statements of Income for the year ended December 31, 2022. There were no such comparable transactions for the years ended December 31, 2024 and 2023.

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Other income and expense

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Non-operating income and expense items for the years ended December 31, 2024, 2023 and 2022 were as follows (in millions):

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Interest expense, net for the year ended December 31, 2024 was $65.3 million compared to $78.2 million for the year ended December 31, 2023. The decrease of $12.9 million was due primarily to lower average debt balances and lower average interest rates.

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Interest expense, net for the year ended December 31, 2023 was $78.2 million compared to $39.2 million for the year ended December 31, 2022. The increase of $39.0 million was due primarily to higher average debt balances from the borrowings related to the PLH acquisition and a higher average interest rate.

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The weighted average interest rate on total debt outstanding at December 31, 2024, 2023 and 2022 was 5.6%, 6.8% and 6.2%, respectively.

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Provision for income taxes

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Our provision for income taxes increased $22.5 million to $74.0 million for 2024 compared to 2023. The increase was primarily driven by an increase in pre-tax profits subject to tax. The 2024 effective tax rate was 29.0%.

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Our provision for income taxes increased $25.3 million to $51.5 million for 2023 compared to 2022. The increase was primarily driven by the tax benefit recognized in 2022 for capital losses, the 2023 expiration of a temporary law which allowed full deductibility of per diem expenses in 2021 and 2022 and increased pre-tax profits subject to tax. The 2023 effective tax rate was 29.0%.

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Segment Results

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Operating performance by segment for the years ended December 31, 2024, 2023, and 2022 was as follows (in millions):

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Utilities Segment

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2024 and 2023

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Revenue increased by $28.9 million, or 1.2%, during 2024 compared to 2023. The increase is primarily due to increased project work in our power delivery market and increased activity in our gas and communications markets. Partially offsetting the overall increase was the substantial completion of a major substation project in our power delivery market in the second half of 2023.

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Operating income increased $50.5 million, or 56.6%, during 2024 compared to 2023. The increase is primarily due to increased gross profit. Gross profit as a percentage of revenue increased to 10.6% in 2024 compared to 8.6% in 2023 primarily due to productivity issues on some legacy projects from our PLH acquisition experienced in 2023 and higher costs associated with a communications project in 2023. In addition, we had strong performance in our power delivery market and the increased benefit of higher margin storm work in 2024.

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2023 and 2022

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Revenue increased by $376.4 million, or 18.5%, during 2023 compared to 2022. The increase is primarily due to the acquisitions of PLH and B Comm in 2022 and increased activity in our power delivery and communications markets.

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Operating income decreased $29.8 million, or 25.0%, during 2023 compared to 2022. The decrease is primarily due to a decrease in gross profit, partially offset by growth in revenue. Gross profit as a percentage of revenue decreased to 8.6% in 2023 compared to 10.4% in 2022 primarily due to productivity issues on some legacy PLH projects, higher costs associated with a communication project in 2023, and a shift in revenue mix in 2023.

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Energy Segment

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2024 and 2023

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Revenue increased by $685.8 million, or 20.5%, during 2024 compared to 2023, primarily due to increased renewable energy and industrial activity, partially offset by decreased activity in our pipeline market.

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Operating income increased by $47.2 million, or 19.0% during 2024 compared to 2023, due to strong revenue growth. Gross profit as a percentage of revenue decreased slightly to 11.0% in 2024 compared to 11.4% in 2023, primarily due to higher pipeline margins on a mid-Atlantic project in 2023 that did not repeat in 2024. These amounts were partially offset by growth in higher margin renewable energy work and strong performance by our industrial group in 2024.

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2023 and 2022

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Revenue increased by $948.9 million, or 39.6%, during 2023 compared to 2022, primarily due to increased renewable energy, industrial, and pipeline activity and the PLH acquisition.

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Operating income increased by $110.3 million, or 80.2% during 2023 compared to 2022, due to higher revenue and margins. Gross profit as a percentage of revenue increased to 11.4% in 2023 compared to 10.3% in 2022, primarily due to significant growth in higher margin renewable energy work, strong performance on a pipeline project in the mid-Atlantic in 2023, higher costs on a separate pipeline project in the mid-Atlantic from unfavorable weather conditions experienced in 2022 and higher relative carrying costs for equipment and personnel in 2022 caused by lower than anticipated pipeline volumes.

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Liquidity and Capital Resources

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Cash Needs

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Liquidity represents our ability to pay our liabilities when they become due, fund business operations, and meet our contractual obligations and execute our business plan. Our primary sources of liquidity are our cash balances at the beginning of each period and our cash flows from operating activities. If needed, we have availability under our lines of credit to augment liquidity needs, and we have a current shelf registration statement filed with the SEC that allows for the issuance of an indeterminate amount of debt and equity securities. Our short-term and long-term cash requirements consist primarily of working capital, investments to support revenue growth and maintain our equipment and facilities, general corporate needs, and to service our debt obligations. At December 31, 2024, there were no outstanding borrowings under the Revolving Credit Facility, commercial letters of credit outstanding were $52.3 million, and available borrowing capacity was $272.7 million. In addition, there were no outstanding borrowings under our Canadian credit facilities as of December 31, 2024, commercial letters of credit outstanding were $1.0 million in Canadian dollars and available borrowing capacity was $13.0 million in Canadian dollars.

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In June 2023, we entered into an Accounts Receivable Facility (the “Facility”) with PNC Bank, National Association (“PNC”) to reduce interest costs and improve cash flows from trade accounts receivable. In July 2024 we renewed the Facility for a two-year term, added Regions Bank to the Facility, and increased the maximum purchase commitment to $150.0 million, at any one time. Under the Facility, certain of our designated subsidiaries may sell their trade accounts receivable as they are originated to a wholly owned bankruptcy remote Special Purpose Entity created specifically for this purpose. The total outstanding balance of trade accounts receivable that have been sold and derecognized is $75.0 million as of December 31, 2024. As of December 31, 2024, we had $75.0 million in available capacity under the Facility.

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In order to maintain sufficient liquidity, we evaluate our working capital requirements on a regular basis. We may elect to raise additional capital by issuing common stock, convertible notes, term debt or increasing our credit facility as necessary to fund our operations or to fund the acquisition of new businesses.

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Our cash and cash equivalents totaled $455.8 million at December 31, 2024, compared to $217.8 million at December 31, 2023. We anticipate that our cash and investments on hand, existing borrowing capacity under our credit facilities, access to and capacity under a shelf registration statement, and our future cash flows from operations will provide sufficient funds to enable us to meet our operating needs, our planned capital expenditures, and settle our commitments and contingencies for the next twelve months and the foreseeable future.

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The construction industry is capital intensive, and we expect to continue to make capital expenditures to meet anticipated needs for our services. In 2024, we spent approximately $126.6 million for capital expenditures, which included $81.9 million on our facilities and $36.6 million for construction equipment. Capital expenditures are expected to total between $90.0 million and $110.0 million for 2025, which includes $60.0 million to $80.0 million for construction equipment.

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Cash Flows

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Cash flows during the years ended December 31, 2024, 2023 and 2022 are summarized as follows (in millions):

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Operating Activities

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The sources and uses of cash flow associated with operating activities for the years ended December 31, 2024, 2023 and 2022 were as follows (in millions):