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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, 2021

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OR

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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(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. ☒

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 $1,561.6 million based upon the closing price of such common equity as of June 30, 2021 (the last business day of the Registrant’s most recently completed second fiscal quarter).

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On February 21, 2022 there were 53,219,187 shares of common stock, par value $0.0001, outstanding. 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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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 2022 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K.

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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 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; 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 severe weather conditions, public health crises and pandemics (such as COVID-19), 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 or inability to protect intellectual property; 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 legal 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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Acquisitions

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Future Infrastructure Holdings, LLC. As more fully described in Note 4 — “Business Combinations” of the Notes to Consolidated Financial Statements included in Item 8 of this Annual Report on Form 10-K, on January 15, 2021, we acquired Future Infrastructure Holdings, LLC (“FIH”) in an all-cash transaction valued at approximately $604.7 million, net of cash acquired. FIH is a provider of non-discretionary maintenance, repair, upgrade, and installation services to the communications, regulated gas utility, and infrastructure markets. FIH furthers our strategic plan to expand our service lines, enter new markets, and grow our MSA revenue base. The transaction directly aligns with our strategy to grow in large, higher growth, higher margin markets, and expands our utility services capabilities.

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Other acquisitions. In addition to the FIH acquisition, we have acquired other businesses as we continue to seek opportunities to deepen our market presence, broaden our geographic reach, and expand our service offerings. We continue to evaluate potential acquisition candidates, especially those with strong management teams and growing end markets such as renewable energy, gas and electric utilities, and communications.

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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 major utility, refining, petrochemical, power, renewable energy, communications, midstream, and engineering companies, and state departments of transportation. We have completed major underground and industrial projects for large natural gas transmission and petrochemical companies in the United States, major electrical and gas projects for large utility companies in the United States, as well as significant projects for our engineering customers. 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 MSAs, which are generally multi-year agreements. Work performed under MSAs is typically generated through work orders, and ranges from project management and installation work, to maintenance and upgrade services. Our 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, 2021, 2020 and 2019, revenue derived from projects performed under MSAs was 45.9%, 39.0%, and 43.7%, respectively.

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Our customers have included the Texas Department of Transportation and Louisiana Department of Transportation and Development in the Southern United States as well as many of the leading energy and utility companies in the United States, including, among others, Enterprise Pipeline, Xcel Energy, Pacific Gas & Electric, Southern California Gas, Oncor Electric, Duke Energy, Sempra Energy, Williams, NRG, Chevron, Kinder Morgan, Dominion, Valero, Enel Green Power North America, ExxonMobil and Phillips 66.

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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, 2021, 2020 and 2019, 42.9%, 47.0% and 47.2%, 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 at each of our 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 our strategic relationships with customers will result in future opportunities. Some of our strategic relationships are in the form of strategic alliances or long-term MSAs. However, we realize that future opportunities also require cost effective 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 specialty 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 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 third and fourth quarters of the year as compared to the first two quarters.

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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 $5.0 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 and seasonal nature 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 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 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 types of projects, project locations, 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. and MasTec, Inc.; competitors in our industrial markets include PCL, Cajun Construction, 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 substantial 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 or installation 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, turbines, boilers and vessels, are typically supplied by the customer.

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Some of our gas and electric distribution 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 customers have renewed their MSAs with us. Facility maintenance services, such as

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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 of up to $500,000 per occurrence. We believe that our insurance program is more than adequate to protect us from all casualty and other types of insurance losses.

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We maintain a diligent safety and risk management program that has resulted in a favorable loss experience factor. Through our safety director and the employment of a large staff of regional and site specific safety managers, we have been able to effectively assess and control potential losses and liabilities in both the pre-construction and performance phases of our projects. Though we strongly focus on safety in the workplace, we cannot give assurances that we can prevent or reduce all injuries and/or claims in our workplace.

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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, Environmental and Climate Change Impacts

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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 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 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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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, 2021, approximately 47.4% 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, 2021, we employed 1,925 salaried employees and 8,885 hourly employees. The total number of hourly personnel employed is subject to the volume of specialty 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 forbids 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, experience, culture, styles and talents. We have a Diversity and Inclusion committee whose goal is to identify and advance efforts that aim to create and foster a workplace that is reflective of, and contributes to, the diverse communities in which we do business. The committee promotes awareness of diversity and inclusion issues in support of company-wide efforts to build a more inclusive and diverse workplace.

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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 apprentices to become journeymen. Our leadership development program is a year-long initiative designed to further develop each participant’s leadership skills and requires program participants to challenge themselves and their peers as they progress through coursework.

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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, 2021 our LTIR rate was 0.07 compared to an industry average of 1.1 per the U.S. Bureau of Labor construction industry statistics. Total Recordable Incident Rate (“TRIR”) tracks the total number of workplace safety incidents, 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, 2021 our TRIR rate was 0.49 compared to an industry average of 2.5 per the U.S. Bureau of Labor construction industry statistics.

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In response to the COVID-19 pandemic, we implemented significant operating environmental changes that we determined were in the best interest of our employees, as well as the communities in which we operate, and which comply with government regulations. These include, but are not limited to, providing additional personal protective equipment, requiring on-site health screenings, following proper social distancing practices and offering office employees flexible remote working options.

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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 2022 Annual Meeting of Stockholders.

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We also provide additional benefits to our 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, and insider trading, and 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.primoriscorp.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 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” tab. Also posted on our website under the “Investors/Governance” tab are our Code of Conduct and charters for our Environmental, Social and Governance Committee and Diversity and Inclusion 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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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 may delay, or cancel upgrades, expansions, and/or maintenance and repairs to their systems. Many factors, including the financial condition of the industry, could adversely affect our customers and their willingness to fund capital expenditures in the future.

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Economic, 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 may result in reduced spending by our customers.

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Industry trends and government regulations could reduce demand for our pipeline construction services.

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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. 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, a limitation on the use of “fracking” technology, or creation of significant regulatory issues for the construction of underground pipelines, could significantly reduce our underground work.

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Conversely, government regulations may increase the demand for our pipeline services. The anticipation by utilities that coal-fueled power plants may become uneconomical to operate because of potential environmental regulations or low natural gas prices could increase demand for gas pipeline construction for utility customers.

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Many of our customers are 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”), 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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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 limit or otherwise regulate emissions of greenhouse gases, and additional restrictions are under consideration by different governmental entities. We derive a significant amount of 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 may 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. This could materially adversely affect our business.

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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. We believe that we are in substantial compliance with our environmental obligations.

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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/Renewables 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, including COVID-19.

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Natural disasters, such as hurricanes, tornadoes, floods, earthquakes, and other adverse weather and climate conditions; unforeseen 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, requiring on-site health screenings before entering a job site, and following proper social distancing practices.

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Since March 2020, the COVID-19 outbreak has adversely impacted global activity and contributed to significant volatility in financial markets. While our services have generally been unaffected by various government measures enacted to slow the spread of COVID-19, the initial impacts to all segments were various levels of project interruptions and restrictions that delayed project timelines from those originally planned. In some cases, we experienced temporary work stoppages. This led to general inefficiencies from having to start and stop work, re-sequence work, require on-site health screenings before entering a job site, and follow proper social distancing practices. We were also restricted from completing work or prevented from starting work on certain projects. We continued to be impacted by these factors in 2021.

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During 2021, COVID-19 vaccination coverage broadened considerably across the United States since the vaccines were first approved and became available in late 2020, but progress in vaccination rates has slowed. The duration of effectiveness of the vaccines, as well as their effectiveness against future variants is uncertain. As such, due to the fluidity of the COVID-19 pandemic, uncertainties as to its scope and duration and macroeconomic implications, and ongoing changes in the way that governments, businesses and individuals react and respond to the pandemic, the ultimate impact on us remains uncertain.

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There are no comparable recent events that can provide guidance as to the effect of the ongoing COVID-19 global pandemic, and, as a result, the ultimate impact of COVID-19 or a similar health pandemic or epidemic is highly uncertain. We will continue to actively monitor the situation and may take further actions to alter our business operations that we determine are in the best interests of our employees, customers, suppliers, and stakeholders, or as required by federal, state, or local authorities. We will also continue to monitor our customers and their industries to assess the effect that changes in economic, market and regulatory conditions may have on them. Due to uncertainties regarding the duration and impact of the current COVID-19 pandemic, we are unable to predict the extent to which the COVID-19 pandemic may have a material adverse effect on our business, financial condition or results of operations. We anticipate that the COVID-19 pandemic could have a continued adverse impact on economic and market conditions and we could see an extended period of global economic slowdown.

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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 is dependent on 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 a potential 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 most customer contracts are awarded through bidding processes based on price and the acceptance of certain risks, along with other factors. We compete with other general and specialty contractors, both regional and national, as well as small local contractors. The strong competition

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in our markets requires maintaining skilled personnel and investing in technology, and also puts 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 internal growth which may affect our ability to expand our operations, or grow our business.

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Our ability to generate internal 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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Substantial portions of our revenue are derived from project-based work that is awarded through a competitive bid process. The portion of revenue generated from the competitive bid process for 2021, 2020 and 2019 was approximately 31.2%, 51.7%, and 44.3%, 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 significant 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 42.9% of our revenue in 2021, 47.0% of our revenue in 2020 and 47.2% of our revenue in 2019. 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 significantly 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 2021, 2020 and 2019, revenue attributable to our services outside of the United States, principally in Canada, was 4.5%, 3.5% and 5.8% 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 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 for the next four quarters. Backlog is not a comprehensive indicator of future revenue. 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 indicator of future revenue; 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 portion of our revenue and profit under contracts where scope is adequately defined. The approximate portion of revenue generated in 2021 from contracts where scope is adequately defined was 61.1%. In general, we must estimate the costs of completing a specific project to bid these types of 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, particularly for design, engineering, procurement and some foundation work. 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 could 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 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 business. In addition, if customers fail to pay us for work we perform, we could experience a material adverse effect on our business.

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Our inability to recover on contract modifications against project owners or subcontractors for payment or performance could negatively affect our business.

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We periodically present contract modifications to our clients and subcontractors 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

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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 of $500,000 per occurrence. 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 of $425,000 per individual claim 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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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, 2021, approximately 47.4% of our hourly employees, primarily consisting of field laborers, were covered by collective bargaining agreements. Of the 82 collective bargaining agreements to which we are a party, 29 expire during 2022 and require renegotiation. 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 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 are in the billions of dollars. If we cannot reduce the liability through exemptions or negotiations, the withdrawal from a plan could have a material adverse impact on our business.

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We depend on key personnel 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. 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.

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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 to lease, acquire and maintain equipment necessary for our operations.

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A significant portion of our contracts is built utilizing our own construction equipment rather than rented 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 continuous maintenance, which we generally provide through our own repair facilities. If we are unable to continue 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. 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 penalties or criminal prosecution for violation of health and safety regulations, our customers could cancel our contracts and not award us future business.

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Interruptions in our operational systems or successful cyber security attacks on any of our 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 sensitive company information. Any cyber security attack 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. 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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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 grow. 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. Our 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, there can be no assurance that a system or network failure or data security breach would not 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 times, these estimates are particularly difficult to determine, and we must exercise significant judgment. Estimates may be used in our assessments of the allowance for doubtful accounts, 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 provisions 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, politics and any prevailing impacts from the COVID-19 pandemic 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, other identifiable intangible assets or investments.

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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, 2021, our balance sheet included goodwill of $581.7 million and intangible assets of $171.3 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 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 the 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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In addition, we may enter into various types of investment arrangements, such as an equity interest we hold in a business entity. Our equity method investments are carried at original cost and are included in other assets in our Consolidated Balance Sheet and are adjusted for our proportionate share of the investees’ income, losses and distributions. Equity investments are reviewed for impairment by assessing whether any decline in the fair value of the investment below its carrying value is other than temporary. In making this determination, factors such as the ability to recover the carrying amount of the investment and the inability of the investee to sustain future earnings capacity are evaluated in determining whether an impairment should be recognized.

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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. The Tax Cuts and Jobs Act (the “Tax Act”) that was signed into law on December 22, 2017 made significant changes to the U.S. Internal Revenue Code and requires complex computations not previously provided in U.S. tax law. New tax laws and regulations and changes in existing tax laws 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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We may not be successful in continuing to meet the internal control requirements of the Sarbanes-Oxley Act of 2002.

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The Sarbanes-Oxley Act of 2002 has many requirements applicable to us regarding corporate governance and financial reporting, including the requirements for management to report on internal controls over financial reporting and for our independent registered public accounting firm to express an opinion over the operating effectiveness of our internal control over financial reporting. At December 31, 2021, our internal control over financial reporting was effective using the internal control framework issued by the Committee of Sponsoring Organizations (“COSO”) of the Treadway Commission: Internal control—Integrated Framework (2013).

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There can be no assurance that our internal control over financial reporting will be effective in future years. Failure to maintain effective internal controls, or the identification of material internal control deficiencies in acquisitions already made, or made in the future could result in a decrease in the market value of our common stock, the reduced ability to obtain financing, the loss of customers, penalties and additional expenditures to meet the requirements in the future.

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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, 2021, $134.1 million of our variable rate debt outstanding was economically hedged and the remaining $386.2 million 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, 2021, a 1.0% increase or decrease in interest rates would change annual interest expense by approximately $3.9 million.

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In addition, regulatory changes and/or reforms, such as the phase-out of the London Inter-bank Offered Rate (“LIBOR”), which is expected to occur by June 30, 2023, could lead to additional volatility in interest rates for our variable rate debt and other unpredictable effects. While our material financing arrangements indexed to LIBOR have procedures for determining an alternative base rate or a LIBOR replacement rate, such alternative rates could perform differently than the current LIBOR-indexed rate and could result in an increase in the cost of our variable rate indebtedness, and thus could adversely affect our results of operations and cash flows. See Item 7 “Management’s

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Discussion and Analysis of Financial Condition and Results of Operations” of this Annual Report on Form 10-K for a further discussion of the impact of the LIBOR transition on our financing arrangements.

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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 shares of common stock 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 53.2 million were outstanding at December 31, 2021. While Nasdaq 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 2013, our stockholders adopted our 2013 Equity Incentive Plan (“Equity Plan”). The Equity Plan replaced a previous plan. The Equity Plan authorized the Board of Directors to issue equity awards totaling 2,526,275 shares of our common stock. Our current director compensation plan, our bonus incentive plan, and our management long-term incentive plan and any additional equity awards made 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:

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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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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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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, 2016, and in each quarter up through December 31, 2021. 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 Peer Group is composed of MasTec, Inc., Matrix Service Company, Quanta Services, Inc., Sterling Construction Company, Inc. and Granite Construction, Inc. 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.

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The returns are calculated assuming that an investment with a value of $100 was made in our common stock and in each stock in the Peer Group, and in the S&P 500 as of December 31, 2016. All dividends were reinvested in additional shares of common stock. The Peer Group investment is calculated based on a weighted average of the five company share prices. 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, 2016 THROUGH DECEMBER 31, 2021

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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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 substantial 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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The classification of revenue and gross profit for segment reporting purposes can at times require judgment on the part of management. Our segments may perform services across industries or perform joint services for customers in multiple industries. To determine reportable segment gross profit, certain allocations, including allocations of shared and indirect costs, such as facility costs, equipment costs and indirect operating expenses were made.

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On January 15, 2021, we acquired Future Infrastructure Holdings, LLC (“FIH”) in an all-cash transaction valued at approximately $604.7 million, net of cash acquired. FIH is a provider of non-discretionary maintenance, repair, upgrade, and installation services to the communications, regulated gas utility, and infrastructure markets. FIH furthers our strategic plan to expand our service lines, enter new markets, and grow our MSA revenue base. The transaction directly aligns with our strategy to grow in large, higher growth, higher margin markets, and expands our utility services capabilities. We incorporated the operations of FIH into our Utilities segment.

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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 operations, broad geographic reach, 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 already stringent regulatory and environmental requirements for many of our clients’ infrastructure projects, which may improve the timing and certainty of the projects. While fluctuating oil prices create uncertainty as to the timing of some of our opportunities, we continue to see preliminary bidding activity for numerous gas, oil and derivatives projects. We believe that we have the financial and operational strength to meet either short-term delays, or the impact of significant increases in work. We continue to be optimistic about both short and longer-term opportunities. Our current view of the outlook for our major 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 specialty construction services. We depend in part on spending by companies in the communications, gas and electric utility industries, the energy, chemical, and oil and gas industries, as well as state departments of transportation and municipal water and wastewater customers. 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, local highway and bridge needs, and from the activity level in the oil and gas industry. However,

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periodically, each of these industries and government agencies is adversely affected by macroeconomic conditions. 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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Since March 2020, the COVID-19 outbreak has adversely impacted global activity and contributed to significant volatility in financial markets. While our services have generally been unaffected by various government measures enacted to slow the spread of COVID-19, the initial impacts to all segments were various levels of project interruptions and restrictions that delayed project timelines from those originally planned. In some cases, we experienced temporary work stoppages. This led to general inefficiencies from having to start and stop work, re-sequencing work, requiring on-site health screenings before entering a job site, and following proper social distancing practices. We were also restricted from completing work or prevented from starting work on certain projects. While we continued to be impacted by these factors in 2021, the primary impacts to our business were inefficiencies in our workforce from absenteeism because of illness or quarantining. However, despite these impacts, our work has generally been deemed essential, our business model appears to be resilient, and we have adapted accordingly.

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During 2021 COVID-19 vaccination coverage has broadened considerably across the United States since the vaccines were first approved and became available in late 2020, but progress in vaccination rates has slowed. The duration of effectiveness of the vaccines, as well as their effectiveness against future variants is uncertain. As such, due to the fluidity of the COVID-19 pandemic, uncertainties as to its scope and duration and macroeconomic implications, and ongoing changes in the way that governments, businesses and individuals react and respond to the pandemic, the ultimate impact on the Company remains uncertain. We anticipate that the COVID-19 pandemic could have a continued adverse impact on economic and market conditions and we could see an extended period of global economic slowdown. When COVID-19 is demonstrably contained, we anticipate a rebound in economic activity, depending on the rate, pace, and effectiveness of vaccinations and the containment efforts deployed by various national, state, and local governments.

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To date, the inefficiencies experienced have had an unquantifiable impact on our business. We will continue to actively monitor the situation and may take further actions to alter our business operations that we determine are in the best interests of our employees, customers, suppliers, and stakeholders, or as required by federal, state, or local authorities. It is not clear what the potential effects any such alterations or modifications may have on our business or on our financial results for the foreseeable future.

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We also monitor our customers and their industries to assess the effect that changes in economic, market, and regulatory conditions may have on them. We have experienced reduced spending, project delays, and project cancellations by some of our customers, which we attribute to negative economic and market conditions, and we anticipate that these negative conditions and the impact of COVID-19 may continue to affect demand for our services in the near-term.

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Fluctuations in market prices of oil, gas and other fuel sources have affected demand for our services. While we have seen signs of a recovery in the price of oil, the volatility in the prices of oil, gas, and liquid natural gas that has occurred in the past few years could create uncertainty with respect to demand for our oil and gas pipeline services, specifically in our pipeline services and Canadian operations. While the construction of gathering lines within the oil shale formations may remain at lower levels for an extended period, we believe that over time, the need for pipeline infrastructure for mid-stream and gas utility companies will result in a continuing need for our services. However, a prolonged period of depressed oil prices could delay midstream pipeline opportunities.

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The continuing changes in the regulatory environment may affect the demand for our services, either by increasing our work, delaying projects, or cancelling projects. For example, environmental laws and regulation can provide challenges to major pipeline projects, resulting in delays or cancellations that impact the timing of revenue recognition. In addition, the regulatory environment in California may result in delays for the construction of gas-fired power plants, while regulators continue to search for significant renewable resources. Renewable resources are also creating a demand for our construction and specialty services, such as the need for battery storage and the construction of solar power production facilities.

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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 specialty 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 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 third and fourth quarters of the year as compared to the first two quarters.

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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 $5.0 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 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 doubtful accounts, 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 it requires an accounting estimate to be based on assumptions about matters that are highly uncertain at the time the estimate is made, and different estimates that reasonably could have been used, or 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 substantial 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. 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,

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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 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 the pandemic caused by the coronavirus 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, 2021, we had approximately $86.9 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 $79.5 million of the unapproved contract modifications had been recognized as revenue on a cumulative catch-up basis through December 31, 2021.

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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, inventory 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.

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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 estimated 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 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, 2021, 2020 and 2019.

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Disruptions to our business, such as end market conditions, protracted economic weakness, unexpected significant declines in operating results of reporting units and the divestiture of a significant component of a reporting unit, may result in our having to perform a goodwill impairment analysis for some or all of our reporting units prior to the required annual assessment. These types of events and the resulting analysis could result in goodwill impairment charges in future periods.

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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, 2021, a one-percentage point increase in our effective tax rate would have resulted in an increase in our income tax expense of approximately $1.5 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; 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 defense 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 13 — “Commitments and Contingencies” of the Notes to Consolidated Financial Statements included in Item 8 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 of this Annual Report on Form 10-K for a discussion of recently issued accounting pronouncements.

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Selling, general and administrative expenses

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Selling, general and administrative expenses (“SG&A”) 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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2021 and 2020

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SG&A expenses were $230.1 million for the year ended December 31, 2021, an increase of $27.3 million, or 13.4% compared to 2020, primarily due to $28.7 million of incremental expense from the FIH acquisition during the period. SG&A expense as a percentage of revenue for the year ended December 31, 2021 increased to 6.6% compared to 5.8% for the year ended December 31, 2020, primarily due to increased expense as we integrate FIH into our operations, as well as lower revenue from our legacy operations.

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2020 and 2019

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SG&A expenses were $202.8 million for the year ended December 31, 2020, an increase of $12.8 million, or 6.7% compared to 2019 primarily due to a $7.4 million increase in compensation related expenses, including incentive compensation and a $3.4 million increase in new information technology systems and related implementation expenses. SG&A expense as a percentage of revenue for the year ended December 31, 2020 decreased to 5.8% compared to 6.1% for the year ended December 31, 2019 due to increased revenue.

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Transaction and related costs

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2021 and 2020

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Transaction and related costs for the year ended December 31, 2021 were $16.4 million, an increase of $13.0 million compared to 2020 primarily due to an increase in professional fees related to our acquisition of FIH, as well as the expense incurred in 2021 associated with the purchase of Primoris common stock by certain employees of FIH at a 15% discount.

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2020 and 2019

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Transaction and related costs for the year ended December 31, 2020 were $3.4 million, an increase of $2.5 million compared to 2019 primarily due to professional fees incurred in 2020 related to our acquisition of FIH.

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Other income and expense

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Non-operating income and expense items for the years ended December 31, 2021, 2020 and 2019 were as follows (in millions):

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Foreign exchange (loss) gain in 2021, 2020 and 2019 is primarily related to currency exchange fluctuations associated with our Canadian engineering operation, which operates principally in United States dollars.

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The change in Other income (expense), net for the years ended December 31, 2021 and 2020 compared to the year ended December 31, 2019 is primarily due to a $2.9 million loss recognized in 2019 related to the sale of a utility customer’s pre-petition bankruptcy accounts receivable to a financial institution.

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Interest expense, net for the year ended December 31, 2021 was $18.5 million compared to $19.9 million for the year ended December 31, 2020. The decrease of $1.4 million was due to a $4.9 million unrealized gain in 2021 and a $2.8 million unrealized loss in 2020 on our interest rate swap, as well as a lower weighted average interest rate. This decrease was partially offset by higher average debt balances in 2021 from the borrowings incurred related to the FIH acquisition.

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Interest expense, net for the year ended December 31, 2020 was comparable to the same period in 2019.

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The weighted average interest rate on total debt outstanding at December 31, 2021, 2020 and 2019 was 2.8%, 3.7% and 4.0%, respectively.

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Provision for income taxes

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Our provision for income taxes decreased $4.5 million to $36.1 million for 2021 compared to 2020. The decrease was primarily due to the temporary law change allowing full deductibility of per diem expenses through 2022, partially offset by tax on increased pre-tax profits. The 2021 effective tax rate on income including noncontrolling interests and on income attributable to Primoris was 23.8%.

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Our provision for income taxes increased $6.8 million to $40.7 million for 2020 compared to 2019. The increase was primarily due to increased pre-tax profits in 2020, partially offset by a reduction in state income taxes. The 2020 effective tax rate on income including noncontrolling interests and on income attributable to Primoris was 27.9%.

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2021 and 2020

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Revenue increased by $292.4 million, or 21.4%, during 2021 compared to 2020. The increase is primarily attributable to the FIH acquisition ($266.6 million) and increased activity with electric utility customers, partially offset by lower activity with gas utility customers as well as the impact of customer project and material delays.

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Gross profit increased $8.5 million, or 4.8%, during 2021 compared to 2020. The increase is primarily attributable to the incremental impact of the FIH acquisition ($43.6 million), partially offset by lower margins from our legacy operations. Gross profit as a percentage of revenue decreased to 11.2% in 2021 compared to 13.0% in 2020 primarily due to unfavorable weather conditions, customer project and material delays and a decrease in higher margin storm work in 2021, as well as strong performance and favorable margins realized on projects in the Southeast in 2020. These amounts were partially offset by the favorable margins realized by FIH.

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2020 and 2019

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Revenue decreased by $18.2 million, or 1.3%, during 2020 compared to 2019. The decrease is primarily attributable to decreased activity with utility customers in Texas, the Midwest, and the Southeast offset by increased utilities work in nearly all of the geographic regions we serve.

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Gross profit increased $38.6 million, or 27.7%, during 2020 compared to 2019 primarily due to higher margins. Gross profit as a percentage of revenue increased to 13.0% in 2020 compared to 10.1% in 2019 primarily due to favorable margins on projects in the Southeast, being more selective in the type of work we perform resulting in higher margin work in 2020, an increase in higher margin storm work in 2020, and unfavorable weather conditions experienced in certain areas in 2019.

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2021 and 2020

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Revenue increased by $179.4 million, or 14.6%, during 2021 compared to 2020, primarily due to increased renewable energy activity ($286.2 million), partially offset by the substantial completion of industrial projects in Texas, Louisiana, and California in 2020.

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Gross profit increased by $55.4 million, or 58.3%, during 2021 compared to 2020, primarily due to higher revenue and margins. Gross profit as a percentage of revenue increased to 10.7% in 2021 compared to 7.7% in 2020, primarily due to favorable claims resolution on an industrial plant project in 2021 and higher costs in 2020 associated with a liquefied natural gas (“LNG”) plant project in the Northeast. These amounts were partially offset by the favorable impact of the Canadian Emergency Wage Subsidy in 2020.

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2020 and 2019

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Revenue increased by $11.4 million, or 0.9%, during 2020 compared to 2019. The growth is primarily due to an increase in solar energy projects and progress on an industrial project for a utility customer in California ($129.8 million combined), partially offset by the substantial completion of a carbon monoxide and hydrogen plant project that began in 2019 and lower revenue at our Canadian industrial operations.

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Gross profit decreased by $35.3 million, or 27.1%, during 2020 compared to 2019. The decrease is primarily due to lower margins. Gross profit as a percentage of revenue decreased to 7.7% in 2020 compared to 10.7% in 2019 due to higher costs associated with a LNG plant project in the Northeast in 2020, partially offset by strong performance and favorable margins realized on our solar projects in 2020, the favorable impact of the Canadian Emergency Wage Subsidy in 2020, and higher costs associated with two industrial projects in 2019.

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2021 and 2020

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Revenue decreased by $465.5 million, or 51.9%, during 2021 compared to 2020. The decrease is attributable to the substantial completion of several pipeline projects in 2020 ($416.7 million) and a decline in the overall midstream pipeline market demand from historically high levels, along with challenges in permitting new pipelines. The revenue levels in 2021 are more consistent with those experienced historically and with our expectations for the Pipeline segment.

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Gross profit decreased by $17.4 million, or 17.8%, during 2021 compared to 2020, primarily due to lower revenue, partially offset by higher margins. Gross profit as a percentage of revenue increased to 18.6% in 2021 compared to 10.9% in 2020, primarily due to the favorable impact from the closeout of multiple pipeline projects in 2021 and higher costs on pipeline projects in Virginia and Texas in 2020, partially offset by strong performance and favorable margins realized on a Texas pipeline project in 2020. Gross profit as a percentage of revenue experienced in 2020 is more consistent with those experienced historically and with our expectations going forward for the Pipeline segment.

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2020 and 2019

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Revenue increased by $391.8 million, or 77.6%, during 2020 compared to 2019. The increase is primarily due to pipeline projects in Texas that began in 2020 ($481.8 million combined), partially offset by reduced activity on a pipeline project in the Mid-Atlantic that was cancelled by the developers and the substantial completion of a pipeline project in 2019.

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Gross profit increased by $35.9 million, or 58.3%, during 2020 compared to 2019. The increase is primarily attributable to revenue growth, partially offset by lower margins. Gross profit as a percentage of revenue decreased to 10.9% in 2020 compared to 12.2% in 2019. The decrease is primarily due to higher costs on pipeline projects in Virginia and Texas in 2020 and the favorable impact from the closeout of multiple pipeline projects in 2019, partially offset by strong performance and favorable margins realized on a Texas pipeline project in 2020.

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2021 and 2020

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Net cash provided by operating activities for 2021 was $79.7 million, a decrease of $233.3 million compared to 2020. The change year-over-year was primarily due to an unfavorable impact from the changes in assets and liabilities.

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The significant components of the $132.7 million change in assets and liabilities for the year ended December 31, 2021 are summarized as follows:

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2020 and 2019

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Net cash provided by operating activities for 2020 was $313.0 million an increase of $194.1 million compared to 2019. The change year-over-year was primarily due to a favorable impact from the changes in assets and liabilities and an increase in net income.

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The significant components of the $128.2 million change in assets and liabilities for the year ended December 31, 2020 are summarized as follows:

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Investing activities

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Net cash used in investing activities was $691.3 million, $42.5 million, and $65.8 million in the years ended December 31, 2021, 2020 and 2019, respectively.

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During 2021, we used $607.0 million for acquisitions, primarily for the acquisition of FIH.

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We purchased property and equipment for $133.8 million, $64.4 million and $94.5 million in the years ended December 31, 2021, 2020 and 2019, respectively, principally for our construction activities and facilities investment. We believe the ownership or long-term leasing of equipment is generally preferable to renting equipment on a project-by-project basis, as this strategy helps to ensure the equipment is available for our projects when needed. In addition, this approach has historically resulted in lower overall equipment costs.

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We periodically sell assets, typically to update our fleet. We received proceeds from the sale of assets of $49.5 million, $21.9 million and $28.6 million for 2021, 2020 and 2019, respectively.

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Financing activities

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Financing activities provided cash of $485.8 million in 2021, which was primarily due to the following:

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Financing activities used cash of $62.8 million in 2020, which was primarily due to the following:

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Financing activities used cash of $83.3 million in 2019, which was primarily due to the following:

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Debt Activities

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Credit Agreement

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On January 15, 2021, we entered into the Second Amended and Restated Credit Agreement (the “Amended Credit Agreement”) with CIBC Bank USA, as administrative agent (the “Administrative Agent”) and co-lead arranger, and the financial parties thereto (collectively, the “Lenders”), amending and restating our credit agreement (the “Credit Agreement”) to increase the original term loan (“Term Loan”) by $400.0 million to an aggregate principal amount of $592.5 million (the “New Term Loan”) and to extend the maturity date of the Credit Agreement from July 9, 2023 to January 15, 2026. The proceeds from the New Term Loan were used to finance the acquisition of FIH.

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In addition to the New Term Loan, the Amended Credit Agreement consists of the existing $200.0 million revolving credit facility (“Revolving Credit Facility”) whereby the Lenders agreed to make loans on a revolving basis from time to time and to issue letters of credit for up to the $200.0 million committed amount, and contains an accordion feature that would allow us to increase the New Term Loan or the borrowing capacity under the Revolving Credit Facility by up to $75.0 million.

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At February 21, 2022 there were no outstanding borrowings under the Revolving Credit Facility, commercial letters of credit outstanding were $42.0 million, and available borrowing capacity was $158.0 million.

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Under the Amended Credit Agreement, we must make quarterly principal payments on the New Term Loan in an amount equal to approximately $7.4 million, with the balance due on January 15, 2026.

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The principal amount of all loans under the Amended Credit Agreement will bear interest at either: (i) LIBOR plus an applicable margin as specified in the Amended Credit Agreement (based on our senior debt to EBITDA ratio as defined in the Amended Credit Agreement), or (ii) the Base Rate (which is the greater of (a) the Federal Funds Rate plus 0.5% or (b) the prime rate as announced by the Administrative Agent) plus an applicable margin as specified in the Amended Credit Agreement. Quarterly non-use fees, letter of credit fees and administrative agent fees are payable at rates specified in the Amended Credit Agreement.

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The principal amount of any loan drawn under the Amended Credit Agreement may be prepaid in whole or in part at any time, with a minimum prepayment of $5.0 million. During the year ended December 31, 2021, we made additional payments on the New Term Loan of $42.6 million.

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Loans made under the Amended Credit Agreement are secured by our assets, including, among others, our cash, inventory, equipment (excluding equipment subject to permitted liens), and accounts receivable. Certain of our domestic subsidiaries have issued joint and several guaranties in favor of the Lenders for all amounts under the Amended Credit Agreement.

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The Amended Credit Agreement contains various restrictive and financial covenants including, among others, a senior debt/EBITDA ratio and debt service coverage requirements. In addition, the Amended Credit Agreement includes restrictions on investments, change of control provisions and provisions in the event we dispose of more than 20% of our total assets.

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We were in compliance with the covenants for the Amended Credit Agreement at December 31, 2021.

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On September 13, 2018, we entered into an interest rate swap agreement to manage our exposure to the fluctuations in variable interest rates. The swap effectively exchanged the interest rate on 75% of the debt outstanding under our Term Loan from variable LIBOR to a fixed rate of 2.89% per annum, in each case plus an applicable margin, which was 2.00% at December 31, 2021.

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Canadian Credit Facilities

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We have a demand credit facility for $4.0 million in Canadian dollars with a Canadian bank for purposes of issuing commercial letters of credit in Canada (“Canadian Credit Facility”). The credit facility has an annual renewal and provides for the issuance of commercial letters of credit for a term of up to five years. The facility provides for an annual fee of 1.0% for any issued and outstanding commercial letters of credit. Letters of credit can be denominated in either Canadian or U.S. dollars. At December 31, 2021, commercial letters of credit outstanding were $0.4 million in Canadian dollars, and the available borrowing capacity was $3.6 million in Canadian dollars. The credit facility contains a working capital restrictive covenant for our Canadian subsidiary, OnQuest Canada, ULC. At December 31, 2021, OnQuest Canada, ULC was in compliance with the covenant.

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We have a credit facility for $10.0 million in Canadian dollars with CIBC Bank for working capital purposes in the normal course of business (“Working Capital Credit Facility”). At December 31, 2021, there were no outstanding borrowings under the Working Capital Credit Facility, and available borrowing capacity was $10.0 million in Canadian dollars. The Working Capital Credit Facility contains a cross default restrictive covenant where a default under our Credit Agreement will represent a default in the Working Capital Credit Facility.

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The summary does not include potential obligations under multi-employer pension plans in which some of our employees participate. Our multi-employer pension plan contribution rates are generally specified in our collective bargaining agreements, and contributions are made to the plans based on employee payrolls. Our obligations for future periods cannot be determined because we cannot predict the number of employees that we will employ at any given time nor the plans in which they may participate.

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We may also be required to make additional contributions to multi-employer pension plans if they become underfunded, and these contributions will be determined based on our union payroll. The Pension Protection Act of 2006 added special funding and operational rules for multi-employer plans that are classified as “endangered,” “seriously endangered” or “critical” status. Plans in these classifications must adopt measures to improve their funded status through a funding improvement or rehabilitation plan, which may require additional contributions from employers. The amounts of additional funds that we may be obligated to contribute cannot be reasonably estimated and is not included in the table above.

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Related Party Transactions

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For information regarding related party transactions, see Note 18 — “Related Party Transactions” of the Notes to Consolidated Financial Statements included in Item 8 of this Annual Report on Form 10-K, which is incorporated herein by reference.

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Off Balance Sheet Arrangements

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We enter into certain off-balance sheet arrangements in the ordinary course of business that result in risks not directly reflected on our balance sheet. We have no off-balance sheet financing arrangement with VIEs. The following represents transactions, obligations or relationships that could be considered material off-balance sheet arrangements.

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Backlog

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For companies in the construction industry, backlog can be an indicator of future revenue streams. Different companies define and calculate backlog in different manners. We define backlog as a combination of: (1) anticipated revenue from the uncompleted portions of existing contracts where scope is adequately defined, and therefore we can reasonably estimate total contract value (“Fixed Backlog”), and (2) the estimated revenue on MSA work for the next four quarters (“MSA Backlog”). We do not include certain contracts in the calculation of backlog where scope, and therefore contract value, is not adequately defined.

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The two components of backlog, Fixed Backlog and MSA Backlog, are detailed below.

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Revenue recognized from non-Fixed Backlog projects shown above is generated by MSA projects and projects completed under contracts where scope, and therefore contract value, is not adequately defined, or are generated from the sale of construction materials, such as rock or asphalt to outside third parties.

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At December 31, 2021, our total Fixed Backlog was $2.48 billion, representing an increase of $839.6 million, or 51.2%, from $1.64 billion as of December 31, 2020.

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