Cover and table of contents

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

For the quarterly period ended March 31, 2026.

Quanta Services, Inc.

(Exact name of registrant as specified in its charter)

2727 North Loop West

Houston, Texas 77008

(Address of principal executive offices, including zip code)

(713) 629-7600

(Registrant’s telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

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

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 ☐

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 ☐

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.

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. ☐

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

As of April 27, 2026, the number of outstanding shares of Common Stock of the registrant was 150,060,149.

QUANTA SERVICES, INC. AND SUBSIDIARIES

TABLE OF CONTENTS

Cautionary Statement About Forward-Looking Statements and Information

This Quarterly Report on Form 10-Q (Quarterly Report) of Quanta Services, Inc. (together with its subsidiaries, Quanta, we, us or our) includes forward-looking statements reflecting assumptions, expectations, projections, intentions or beliefs about future events that are intended to qualify for the “safe harbor” from liability established by the Private Securities Litigation Reform Act of 1995. You can identify these statements by the fact that they do not relate strictly to historical or current facts. They use words such as “anticipate,” “estimate,” “project,” “forecast,” “may,” “will,” “should,” “could,” “expect,” “believe,” “plan,” “intend” and other words of similar meaning. In particular, these include, but are not limited to, statements relating to the following:

• Projected revenues, net income, earnings per share, margins, cash flows, liquidity, weighted average shares outstanding, capital expenditures, interest rates and tax rates, as well as other projections of operating results and GAAP (as defined herein) and non-GAAP financial results, including EBITDA (as defined herein), adjusted EBITDA (as defined herein) and backlog;

• Expectations regarding our business or financial outlook;

• Expectations regarding opportunities, technological developments, competitive positioning, future economic and regulatory conditions and other trends in particular markets or industries;

• Expectations regarding our plans and strategies, including with respect to our supply chain solutions and expanded or new services offerings;

• The business plans or financial condition of our customers;

• The potential benefits from, and future financial and operational performance of, acquired businesses and our investments, including our equity interest in LUMA (as defined herein);

• The expected value of contracts or intended contracts with customers, as well as the expected timing, scope, services, term or results of any awarded or expected projects;

• Possible recovery of pending or contemplated insurance claims, change orders and claims asserted against customers or third parties, as well as the collectability of receivables;

• The development of and opportunities with respect to future projects, including projects involving renewable energy and other power generation, electrical grid modernization, upgrade and hardening; data centers and other technology infrastructure; advanced manufacturing facilities; and larger transmission and pipeline infrastructure;

• Expectations regarding the future availability and price of materials and equipment necessary for the performance of our business;

• The expected impact of global and domestic economic or political conditions on our business, financial condition, results of operations, cash flows, liquidity and demand for our services, including inflation, interest rates, tariffs, recessionary economic conditions and commodity prices and production volumes;

• The expected impact of changes and potential changes in climate and the physical and transition risks associated with changes in climate;

• Future capital allocation initiatives, including the amount and timing of, and strategies with respect to, any future acquisitions, investments, cash dividends, repurchases of our equity or debt securities or repayments of other outstanding debt;

• The expected impact of existing or potential legislation or regulation;

• Potential opportunities that may be indicated by bidding activity or similar discussions with customers;

• The future demand for, availability of and costs related to labor resources in the industries we serve;

• The expected recognition and realization of our remaining performance obligations or backlog;

• Expectations regarding the outcome of pending or threatened legal proceedings; and

• Expectations with respect to our ability to maintain our current credit ratings.

These forward-looking statements are not guarantees of future performance; rather they involve or rely on a number of risks, uncertainties, and assumptions that are difficult to predict or are beyond our control, and reflect management’s beliefs and assumptions based on information available at the time the statements are made. We caution you that actual outcomes and results may differ materially from what is expressed, implied or forecasted by our forward-looking statements and that any or all of our forward-looking statements may turn out to be inaccurate or incorrect. These statements can be affected by inaccurate assumptions and by known or unknown risks and uncertainties, including the following:

• Market, industry, economic, financial or political conditions that are outside of our control, including economic, energy, infrastructure and environmental policies and plans that are adopted or proposed by the U.S. federal and state governments or other governments in territories or countries in which we operate, inflation, interest rates, recessionary economic conditions, deterioration of global or specific trade relationships, and geopolitical conflicts and political unrest;

• Quarterly variations in our operating and financial results, liquidity, financial condition, cash flows, capital requirements, and reinvestment opportunities;

• Trends and growth opportunities in relevant markets, including our ability to obtain future project awards;

• Delays, deferrals, reductions in scope or cancellations of anticipated, pending or existing projects as a result of, among other things, supply chain or production disruptions and other logistical challenges, weather, regulatory or permitting issues, right of way acquisition, environmental processes, project performance issues, claimed force majeure events, protests or other political activity, legal challenges, inflationary pressure, reductions or eliminations in governmental funding or customer capital constraints;

• The effect of commodity prices and commodity production volumes, which have been and may continue to be affected by inflationary pressure and geopolitical conditions, on our operations and growth opportunities and on our customers’ capital programs and demand for our services;

• The successful negotiation, execution, performance and completion of anticipated, pending and existing contracts;

• Events arising from operational hazards, including, among others, wildfires and explosions, that can arise due to the nature of the services we provide and certain of our product solutions, as well as the conditions in which we operate, and can be due to failure of infrastructure on which we have performed services and result in significant liabilities that may be exacerbated in certain geographies and locations;

• Unexpected costs, liabilities, fines or penalties that may arise from legal proceedings, indemnity obligations, reimbursement obligations associated with letters of credit or bonds, multiemployer pension plans or other claims or actions asserted against us, including amounts that are not covered by, or are in excess of the coverage under, our third-party insurance;

• Potential unavailability or cancellation of third-party insurance coverage, as well as the exclusion of coverage for certain losses, potential increases in premiums and deductibles for coverage deemed beneficial to us, or the unavailability of coverage deemed beneficial to us at reasonable and competitive rates (e.g., coverage for wildfire events);

• Damage to our brands or reputation, as well as potential costs, liabilities, fines or penalties, arising as a result of cybersecurity breaches, environmental and occupational health and safety matters, corporate scandal, failure to successfully perform or negative publicity regarding a high-profile project, involvement in a catastrophic event (e.g., fire, explosion) or other negative incidents;

• Disruptions in, or failure to adequately protect, our information technology systems;

• Our dependence on suppliers, subcontractors, equipment manufacturers and other third parties and the impact of, among other things, inflationary pressure and regulatory, supply chain and logistical challenges on these third parties;

• Estimates and assumptions related to our financial results, remaining performance obligations and backlog;

• Our inability to attract, the potential shortage of, and increased costs with respect to skilled employees, as well as our ability to retain and attract key personnel and qualified employees;

• Our dependence on fixed price contracts and the potential that we incur losses with respect to these contracts;

• Cancellation provisions within our contracts and the risk that contracts expire and are not renewed or are replaced on less favorable terms;

• Our inability or failure to comply with the terms of our contracts, which may result in additional costs, unexcused delays, warranty claims, failure to meet performance guarantees, damages or contract terminations;

• Adverse weather conditions, natural disasters and other emergencies, including wildfires, pandemics, hurricanes, tropical storms, floods, debris flows, earthquakes and other geological- and weather-related hazards, as well as the impact of changes in climate;

• Competition in our business, including our ability to effectively compete for new projects and market share, as well as technological advancements and market developments that could reduce demand for our services;

• The failure of existing or potential legislative actions and initiatives to result in increased demand for our services or budgetary or other constraints that may reduce or eliminate tax incentives or government funding for projects, including renewable energy projects, which may result in project delays or cancellations;

• The unavailability of, or increased prices for, materials, equipment and consumables (such as fuel) used in our and our customers’ businesses, including as a result of inflationary pressure; supply chain or production disruptions; governmental regulations on sourcing; the imposition of tariffs, duties, taxes or other assessments; and other changes in U.S. trade relationships with foreign countries;

• Loss of or deterioration of relationships with customers that we have long-standing or significant relationships with;

• The potential that our participation in joint ventures or similar structures exposes us to liability or harm to our reputation as a result of acts or omissions by our partners;

• The inability or refusal of our customers or third-party contractors to pay for services, which could result in our inability to collect our outstanding receivables, failure to recover amounts billed to, or avoidance of certain payments received from, customers in bankruptcy or failure to recover on change orders or contract claims;

• Risks associated with operating in international markets and U.S. territories, including instability of governments, significant currency exchange fluctuations, and compliance with unfamiliar legal and labor systems and cultural practices, the U.S. Foreign Corrupt Practices Act and other applicable anti-bribery and anti-corruption laws, and complex U.S. and foreign tax regulations and international treaties;

• Our inability to successfully identify, complete, integrate and realize synergies from acquisitions, including the inability to retain key personnel from acquired businesses;

• The potential adverse impact of acquisitions and investments, including the potential increase in risks already existing in our operations, poor performance or decline in value of acquired businesses or investments and unexpected costs or liabilities that may arise from acquisitions or investments;

• The adverse impact of any impairments of goodwill, other intangible assets, receivables, long-lived assets or investments;

• Difficulties managing our business as it expands and becomes more complex;

• The impact of the unionized portion of our workforce on our operations;

• An inability to access sufficient funding to finance desired growth and operations, including our ability to access capital markets on favorable terms, as well as fluctuations in the price and trading volume of our common stock, debt covenant compliance, interest rate fluctuations, a downgrade in our credit ratings and other factors affecting our financing and investing activities;

• Our ability to obtain bonds, letters of credit and other project security;

• Risks related to the implementation of new information technology systems;

• New or changed tax laws, treaties or regulations or the inability to realize deferred tax assets; and

• The other risks and uncertainties described elsewhere herein, including in Item 1A. Risk Factors in Part I of our Annual Report on Form 10-K for the year ended December 31, 2025 (2025 Annual Report), and as may be detailed from time to time in our other public filings with the U.S. Securities and Exchange Commission (SEC).

All of our forward-looking statements, whether written or oral, are expressly qualified by these cautionary statements and any other cautionary statements that may accompany such forward-looking statements or that are otherwise included in this report. Although forward-looking statements reflect our good faith beliefs at the time they are made, reliance should not be placed on forward-looking statements because they involve known and unknown risks, uncertainties and other factors, which may cause our actual results, performance or achievements to differ materially from anticipated future results, performance or achievements expressed or implied by such forward-looking statements. In addition, we do not undertake and expressly disclaim any obligation to update or revise any forward-looking statements to reflect events or circumstances after the date of this report or otherwise.

PART I - FINANCIAL INFORMATION