Our strengths and expertise in the construction of civil and building infrastructure projects have been augmented by our vertical integration capabilities, which we established more than 10 years ago through the acquisitions of various business entities specializing in electrical, mechanical, plumbing, HVAC and other services that enhanced our market capabilities and expanded our geographic presence. Our vertical integration is a competitive advantage that allows us to self-perform a greater amount of work than our competitors. It also increases our competitiveness in bidding and our efficiency in managing and executing large, complex projects, and provides us with significant cross-selling opportunities across a broad geographic footprint.

Our business is conducted through three segments: Civil, Building and Specialty Contractors.

Our Civil segment specializes in public works construction and the replacement and reconstruction of infrastructure across several major geographic regions of the United States. Our civil contracting services include construction and rehabilitation of highways, bridges, tunnels, mass-transit systems, military defense facilities, and water management and wastewater treatment facilities.

The Civil segment is comprised of the heavy civil construction operations of our predecessors, Tutor-Saliba Corporation, its subsidiary Black Construction, and Perini, as well as our acquired companies, Frontier-Kemper, Lunda Construction and Becho. Our heavy civil units operate primarily on the West and East Coasts of the United States and are engaged in a variety of large mass-transit, tunneling, bridge and highway projects. Black Construction is the largest contractor in Guam and provides a variety of heavy civil, building, mechanical and electrical construction services throughout the Western Pacific region and in other strategic military locations. Frontier-Kemper is a heavy civil contractor engaged in the construction of tunnels for highways, railroads, subways and rapid transit systems; the construction of shafts and other facilities for water supply, wastewater transport and hydroelectric projects; and the development and equipping of mines with innovative hoisting, elevator and vertical conveyance systems. Lunda Construction is a heavy civil contractor specializing in the construction, rehabilitation and maintenance of bridges, railroads and other civil structures throughout the United States. Becho is engaged in drilling, foundation and excavation support for shoring, bridges, piers, roads and highway projects, primarily in the southwestern United States.

Our Civil segment’s customers primarily award contracts through one of two methods: the traditional public “competitive bid” method, in which price is the major determining factor, or through a best value proposal, where contracts are awarded based on a combination of technical qualifications, proposed project team, schedule, past performance on similar projects and price.

Traditionally, our Civil segment’s customers require each contractor to pre-qualify for construction business by meeting criteria that include technical capabilities and financial strength. Our financial strength, outstanding record of performance on challenging civil works projects, and vertical integration capabilities often enable us to pre-qualify for projects in situations where smaller, less diversified contractors are unable to meet the qualification requirements. We believe this is a competitive advantage that allows us to self-perform a greater amount of work and makes us an ideal lead contractor for the largest, most complex infrastructure projects and on prestigious design-build, design-build-operate-maintain and public-private partnership projects.

We have been active in civil construction since 1894 and believe we have a particular expertise in large, complex civil construction projects. We have completed, or are currently working on, some of the most significant civil construction projects in the United States. For example, we are currently workingnearing completion on the Newark Airport Terminal One,A project and the East Side Access project in New York City, and we have substantially completed the San Francisco Central Subway extension to Chinatown. Additionally, we are working on the first phase of the California High-Speed Rail project, the Purple Line Segments 2 and 3 expansion projects in Los Angeles the San Francisco Central Subway extension to Chinatown and the Minneapolis Southwest Light Rail Transit project. We have also completed other major projects such as the SR 99 project in Seattle; the platform over the eastern rail yard at Hudson Yards in New York City; the rehabilitation of the Verrazano-Narrows Bridge in New York; and multiple runway reconstruction projects at the John F. Kennedy International Airport in New York, Los Angeles International Airport and Fort Lauderdale-Hollywood International Airport, among others.

We believe the Civil segment provides us with significant opportunities for growth due to the condition of existing infrastructure coupled with large government funding sources dedicated to the replacement and reconstruction of aging U.S. infrastructure. In addition, infrastructure programs generally garner popular, bipartisan support from the public and elected officials due to their favorable long-term economic impacts, including significant job creation. Funding for major Civil segment infrastructure projects is typically provided through a combination of one or more of the following: local, regional, state and federal loans and grants; other direct allocations sourced through tax revenue; bonds; user fees; and, for certain projects, private capital.

On November 15, 2021, the bipartisan Infrastructure Investment and Jobs Act of 2021 (the “IIJA”“Bipartisan Infrastructure Law” or “BIL”) was enacted into law. The IIJA provides forlaw, providing $1.2 trillion of federal infrastructure funding, including $550 billion in new spending

for improvements to the country’s surface-transportation network and enhancements to core infrastructure. The IIJABIL marks the largest federal

Our Building segment has significant experience providing services to a number ofseveral specialized building markets for private and public works customers, including hospitality and gaming, transportation, health care, commercial offices, government facilities, sports and entertainment, education, correctional facilities, biotech, pharmaceutical, industrial and technology. We believe the success of the Building segment results from our proven ability to manage and perform large, complex projects with aggressive fast-track schedules, elaborate designs, and advanced mechanical, electrical and life safety systems, while providing accurate budgeting and strict quality control. Although price is a key competitive factor, we believe our strong reputation, long-standing customer relationships and significant level of repeat and referral business have enabled us to achieve a leading position in the marketplace.

The Building segment is comprised of several operating units that provide general contracting, design-build, preconstruction and construction services in various regions of the United States. Rudolph and Sletten, one of our general contracting firms, focuses on large, complex projects in California in the health care, commercial office, technology, industrial, education, and government facilities markets. Tutor Perini Building Corp. focuses on large, complex building projects nationwide, including significant projects in the hospitality and gaming, commercial office, education, government facilities, and multi-unit residential markets. Roy Anderson Corp. provides general contracting services, including major disaster response and reconstruction support, to public and private customers primarily throughout the southeastern United States. Perini Management Services provides diversified construction and design-build services internationally to U.S. government agencies, as well as to surety companies and multi-national corporations.

We have completed, or are currently working on, various large private and public building projects across a wide array of end markets. Specific projects include Newark Airport Terminal One;A; the LAX Airport Metro Connector Transit Station in Los Angeles, California; three large corporate office buildings in northern California for distinct confidential technology customers; a commercial office tower and a multi-unit residential tower, both at Hudson Yards in New York City; the El Caminonew Cedars-Sinai Hospital Integrated Medical Office Building in El Camino,Marina Del Rey, California; Kaiser Hospital buildings in San Leandro, Redwood City and Roseville, California; the Choctaw Casino and Resort in Durant, Oklahoma; the Pechanga Resort and Casino expansion in Temecula, California; the O Street Government Office Building in Sacramento, California; and courthouses in San Bernardino and San Diego, California and Broward County, Florida. As a result of our reputation and track record, we were previously awarded and completed contracts for several marquee hospitality and gaming projects in Las Vegas, including CityCenter, the Cosmopolitan Resort and Casino and the Wynn Encore Hotel. These projects span a wide array of building end markets and illustrate our Building segment’s résumé of successfully completed large-scale public and private projects.

Our Specialty Contractors segment specializes in electrical, mechanical, plumbing, HVAC and fire protection systems for a full range of civil and building construction projects in the industrial, commercial, hospitality and gaming, and mass-transit end markets. This segment provides unique strengths and vertically integrated service capabilities that position us as a full-service contractor with greater control over project bids and costs, scheduled work, project delivery and risk management. The majority of work performed by the Specialty Contractors segment is contracted directly with state and local municipal agencies, real estate developers, school districts and other commercial and industrial customers. A significant portion of the segment's work has been, and is expected to continue to be, performed for our Civil and Building segments.

The Specialty Contractors segment is comprised of several operating units that provide unique services in various regions of the United States. Five Star Electric Corp. (“Five Star”) is an industry leader and one of the largest electrical contractors in New

York City. Five Star provides construction services, including power, lighting, fire alarm, security, telecommunications, low

Our Specialty Contractors business units have completed, or are currently working on, various portions of the East Side Access project in New York City, various projects at the World Trade Center and at Hudson Yards in New York City, and upgrades and rehabilitations at various New York City public housing facilities. The Specialty Contractors segment has also supported, or is currently supporting, several large projects in our Civil and Building segments, including the SR 99 project in Seattle; the San Francisco Central Subway extension to Chinatown; the Purple Line Segments 2 and 3 expansion projects in Los Angeles; Newark Airport Terminal One;A; the California High Speed Rail project in central California; McCarran International Airport Terminal 3 in Las Vegas; and several marquee hospitality and gaming projects in Las Vegas, including CityCenter, the Cosmopolitan Resort and Casino, and the Wynn Encore Hotel.

For information regarding the breakdown of our revenue by segment, end market, customer type and contract type, see Note 3 of the Notes to Consolidated Financial Statements. In addition, financial information about geographic areas is discussed in Note 14 of the Notes to Consolidated Financial Statements.

Backlog in our industry is a measure of the total value of work that is remaining to be performed on projects that have been awarded. We include a construction project in our backlog when a contract is awarded or when we have otherwise received written definitive notice that the project has been awarded to us and there are no remaining major uncertainties that the project will proceed (e.g., adequate funding is in place). As a result, we believe our backlog is firm, and although cancellations or scope adjustments may occur, historically they have not been material. We estimate that approximately $4 billion, or 46%45%, of our backlog as of December 31, 20212022 will be recognized as revenue in 2022.2023. Our backlog by segment, end market, customer type and contract type is presented in the following tables:

Fixed price contracts, particularly with federal, state and local government customers, are expected to continue to represent a sizeable percentage of total backlog.

While the construction markets include numerous competitors, especially for small to mid-sized projects, much of the work that we target is for larger, more complex projects where there are typically fewer active market participants due to the greater capabilities and resources required to perform the work. In addition to domestic competitors, we have seen certain foreign competitors attempting to grow their presence in the United States over the past several years, particularly through the pursuit of large Civil segment projects. Evolving changes in the construction industry, such as the trend toward an increased use of the progressive design-build project delivery method that may reduce project risks for both owners and contractors, could result in increased competition and potentially lower margins on certain projects in the future. We believe price, experience, reputation, responsiveness, customer relationships, project completion track record, schedule control, risk management and quality of work are key factors customers consider when awarding contracts.

In our Civil segment, we compete principally with large civil construction firms, including (alphabetically) Dragados USA; Fluor Corporation; Granite Construction; Kiewit Corporation; OHL USA; Skanska USA; Traylor Bros., Inc.; and The Walsh Group. In our Building segment, we compete with a variety of national and regional contractors, including (alphabetically) AECOM (through its acquisitions of Tishman Construction and Hunt Construction Group); Balfour Beatty Construction; Clark Construction Group; DPR Construction; Gilbane, Inc.; Hensel Phelps Construction Co.; Lendlease Corporation; McCarthy Building Companies, Inc.; M. A. Mortenson Company; PCL Constructors, Inc.; Skanska USA; Suffolk Construction; andSwinerton, Inc; Turner Construction Company.Company; and The Whiting-Turner Contracting Co. In our Specialty Contractors segment, we compete principally with various regional and local electrical, mechanical and plumbing subcontractors.

We strive to eliminate or minimize exposure to labor and material price increases in our project bids and the manner in which we execute our work. Generally, if prices for materials, labor or equipment increase excessively, provisions in certain types of contracts often shift all or a major portion of any adverse impact to the customer. In our fixed price contracts, we attempt to insulate ourselves from the unfavorable effects of inflation, when possible, by incorporating escalating wage and price assumptions into our construction cost estimates, by obtaining firm fixed price quotes from major subcontractors and material suppliers, by securing purchase commitments for materials early in the project schedule and by including contingency for these risks in our bid price. Construction and other materials used in our construction activities are generally available locally from multiple sources. Despite the widespread adverse supply chain impacts related tothat resulted from the effects of the COVID-19coronavirus (“COVID-19”) pandemic, we havedid not yet experiencedexperience significant supply chain issues broadly across our portfolio of projects, but we cannot be certain that such issues may not arise in the future.future if there are new outbreaks or variants of COVID-19 or other public health crises. Labor resources for our domestic projects are largely obtained through various labor unions. We have not experienced significant labor shortages in recent years, nor do we expect to in the near future. However, longer-term, the anticipated significant increase in demand for large complex projects driven by the IIJABIL could lead to labor shortages.

We experience seasonal trends in our business. Our revenue and operating income are typically higher in the second half of the year. Our first fiscal quarter of the year is typically our lowest revenue quarter, as the harsher winter weather conditions that often occur during this period can negatively impact our ability to execute work and our productivity in parts of North America. Our revenue typically increases during the high construction seasons of the summer and fall months in the United States. Within the United States, as well as in other parts of the world, our business generally benefits from milder weather conditions during our third fiscal quarter, which allows for more productivity from our on-site construction operations. For these reasons, it is not unusual for us to experience seasonal changes or fluctuations in our quarterly operating results.

Most of our federal, state and local government customers can terminate, renegotiate, or modify any of their contracts with us at their election, and many of our federal government contracts are subject to renewal or extension periodically. Revenue derived from federal, state and local government customers was 66%68%, 63%66% and 62%63% of our total revenue for each of the years ended December 31, 2022, 2021 2020 and 2019,2020, respectively.

Environmental, health and safety regulations and requirements materially affect our business. We are firmly committed to providing a safe and healthy work environment for our employees and to working in a manner that ensures the safety of our subcontractors, customers and the general public, as well as the protection of facilities, equipment and the environment. Compliance with Occupational Safety and Health Administration (“OSHA”) and other health and safety regulations, in particular, is essential to procure business and to attract and retain our workforce. Accordingly, we make considerable investments in our environmental, health and safety programs, and we factor costs associated with compliance into our project bids and proposals.

We provide construction and construction management services at various project sites, and sometimes perform work in and around sensitive environmental areas, such as rivers, lakes and wetlands. We also handle small quantities of hazardous materials on occasion. Significant fines, penalties and other sanctions may be imposed for non-compliance with environmental and health and safety laws and regulations, and some laws provide for joint and several strict liabilities for remediation of releases of hazardous substances.

Contaminants have been detected at some of the sites that we own and where we have worked as a contractor in the past, and we have incurred costs for the investigation and remediation of hazardous substances. However, we do not own the job sites

upon which we perform our work. We have pollution liability insurance coverage for such matters, and if applicable, we seek

All of our properties and equipment, as well as those of our joint ventures, are covered by insurance in amounts that we believe are consistent with our risk of loss and industry practice. Our wholly owned subsidiary, PCR Insurance Company, issues policies for default insurance for our subcontractors, automobile liability, general liability and workers’ compensation insurance, allowing us to centralize our claims and risk management functions to reduce our insurance-related costs.

As a normal part of the construction business, we are often required to provide various types of surety bonds as an additional level of security for our performance. We also require many of our higher-risk subcontractors to provide surety bonds as security for payment of subcontractors and suppliers and to guarantee their performance. As an alternative to traditional surety bonds, we also have purchased subcontractor default insurance for certain construction projects to insure against the risk of subcontractor default.

The foundation of our continuing success as a leading construction services business is our ability to attract and retain the industry’s best talent by providing a culture of opportunity, development, accountability and empowerment. This understanding guides our approach to managing our human capital resources.

recruiting specialists to help fill our open job positions. To support retention and motivation of our top talent, we provide very competitive compensation, which may include performance incentives.

Our investor website address is http://investors.tutorperini.com. In the “Financial Reports” portion of our investor website, under the subsection “SEC Filings,” 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. These reports, and any amendments to them, are made available on our website as soon as reasonably practicable after we electronically file them with the Securities and Exchange Commission (“SEC”).

We are subject to a number of known and unknown risks and uncertainties that could have a material adverse effect on our operations. Set forth below, and elsewhere in this report, are descriptions of the material risks and uncertainties that could cause our actual results to differ materially from the results contemplated by the forward-looking statements contained in this report and could have a material adverse effect on our financial condition, results of operations and cash flows.

Accounting for contract-related revenue and costs requires management to make significant estimates and assumptions that may change substantially throughout the project lifecycle, which has previously resulted, and in the future could result, in a material impact to our consolidated financial statements. In addition, cost overruns, including unanticipated cost increases on fixed price contracts (including contracts performed under the design-build project delivery method, in which we assume the risks associated with the design of the project) and guaranteed maximum price contracts, have previously resulted, and in the future may result, in lower profits or losses. Economic factors, including inflation, have also previously, and could alsoin the future, subject us to higher costs, which we may not be able to fully recover in future projects that we are bidding, and may also decrease profit on our existing contracts, in particular with respect to our fixed price, unit price and guaranteed maximum price contracts. Changes in laws, policies or regulations, including tariffs and taxes, have previously impacted, and in the future could impact, the prices for materials or equipment. Further, our results of operations have historically fluctuated, and may continue to fluctuate, quarterly and annually depending on when new awards occur and the commencement and progress of work on projects already awarded.

We are involved in various lawsuits, including the legal proceedings described under Note 8 of the Notes to Consolidated Financial Statements. Litigation is inherently uncertain, and it is not possible to accurately predict what the final outcome will be of any legal proceeding. We must make certain assumptions and rely on estimates, which are inherently subject to risks and uncertainties, regarding potential outcomes of legal proceedings in order to determine an appropriate contingent liability and charge to income. Any adverse legal proceeding outcome or settlement that is materially different from our expectations and estimates could have a material adverse effect on our financial condition, results of operations and cash flows. This may include requiring us to record an expense or reduce revenue that we previously recorded based on our expectations or estimates, requiring us to pay damages or reducing cash collections that we had expected to receive. For example, onduring December 13, 2019,2022, we received an adverse jury verdictappellate court decision involving the electrical component of a completed mass-transit project in New

York in the case related to the construction of the SR 99 project bySpecialty Contractors segment, which resulted in a joint venture for which the Company holds a 45% share as a minority partner. As a result of the unexpected adverse jury verdict, we recorded a pre-taxnon-cash charge of $166.8 million in 2019. Refer to the Alaskan Way Viaduct Matter in Note 8 of the Notes to Consolidated Financial Statements for further discussion.$43.2 million. In addition, any future adverse judgments could harm our reputation and preclude us from bidding on future projects.

We may bring claims against project owners for additional cost exceeding the contract price or for amounts not included in the original contract price. When these types of events occur and unresolved claims are pending, we may invest significant working capital in projects to cover cost overruns pending the resolution of the relevant claims. A failure to promptly recover on these types of claims has had and could continue to have a material adverse effect on our liquidity and financial results and could result in further legal proceedings.

The outlook for the Company’s growth over the next several years remains favorable, but the impact of the COVID-19 pandemicit could continue to adversely affect performance and operations, and the amount and timing of new work awarded. In addition, the Company’s growth could continue to be negatively impacted by future project delays or the timing of project bids, awards, commencements, ramp-up activities and completions.completions, as well as by any adverse follow-on consequences of the COVID-19 pandemic. We anticipate that we will continue to win our share of significant new awards resulting from long-term capital spending plans by state, local and federal customers, as well as limited competition for some of the largest project opportunities.

In elections over the past several years,decade, voters in numerous44 states have approved dozens85% of long-term transportation fundingnearly 3,000 state and local ballot measures, totaling approximately $200raising an estimated $342 billion in long-term funding.new and renewed revenue funding for transportation investments. The largest of these was in Los Angeles County, where Measure M, a half-cent sales tax increase, was approved in 2016 and is expected to generate $120 billion of funding over 40 years. In addition, California's Senate Bill 1, which was signed into law in 2017, is providing an average of $5.4 billion annually through 2027 for various transportation, mass-transit and bridge projects. Interest rates have remained near historically lowrisen over the past year, as anticipated, but are still at levels which may bewe believe remain conducive to continued and potentially increased, spending on infrastructure projectsvarious types of projects. However, if borrowing rates remain at relatively lowcontinue to increase, they could reach levels following anticipated interest rate increases by the Federal Reserve in 2022.that may negatively impact demand, particularly for certain Building segment end markets which tend to be more closely correlated to economic conditions.

As discussed above, the IIJAThe BIL was enacted into law on November 15, 2021, and it provides for $1.2 trillion of federal infrastructure funding, including $550 billion in new spending for improvements to the country’s surface-transportation network and enhancements to core infrastructure. The IIJAlaw marks the largest federal investment in public transit ever, the single largest dedicated bridge investment since the construction of the interstate highway system and the largest federal investment in passenger rail since the creation of Amtrak, all in addition to providing for regular annual spending for numerous infrastructure projects. This significant incremental funding is anticipated to be spent over the next 10 years, and much of it will be investedis allocated for investment in end markets that are directly aligned with the Company’s market focus. Accordingly, the Company believes that this significant level of sustained, incremental funding will favorably impact the Company’s current work and prospective opportunities over the next decade.

The results of our Civil, Building and Specialty Contractors segments are discussed below:

Revenue and income from construction operations for the Civil segment are summarized as follows:

Income from construction operations for 2021 increased 8%2022 decreased 92% compared to 2020. Despite2021 due to various factors, including the modest revenue decline,lower profitability associated with the temporary unfavorable impact of $38.8 million resulting from the successful negotiation of significant lower margin (and lower risk) change orders on a mass-transit project in California (where the temporary reduction to earnings is expected to reverse itself over the remaining life of the project), the $26.2 million unfavorable non-cash impact related to a completed highway project in the Northeast due to the reversal on appeal of a previously favorable lower-court

Operating margin was 12.7%1.2% for 20212022 compared to 11.2%12.7% in 2020.2021. The increasedecrease in operating margin for 20212022 was primarily due to the factors discussed above that drove the increasedecrease in income from construction operations.

New awards in the Civil segment totaled $1.6 billion in 2022 compared to $1.9 billion in 2021 compared to $946 million in 2020. As discussed earlier, the larger volume of new2021. New awards in 2021 was primarily due to2022 included $466 million of additional funding for a mass-transit project in California; the impacts$260 million Eagle Mountain - Woodfibre Gas Pipeline project in British Columbia, Canada; $118 million of additional funding for a mass-transit project in the Midwest; and several projects in Guam, including a $107 million military housing project, an $84 million wharf improvement project and two other military facilities projects valued at $73 million and $49 million. The COVID-19 pandemic which delayedhas caused significant revenue shortfalls for certain state and local government agencies since 2020, and it could continue to cause deferrals or cancellations of certain new projects, depending on the biddingallocation and awards for various projects until 2021prioritization of state and beyond. In spitelocal funding, as well as the availability, timing and magnitude of funding from the improvement in new award activity in 2021,federal government, including anticipated funding from the levelBIL. The Company is pursuing and expects to win its share of new awards was negatively impacted by the Company’s lack of success in its pursuit of certainseveral large Civil segment projects in the second half of 2021. 2023.

New awards in 2021 included $434 million for various Civil segment projects in the Midwest; more than $385 million of additional funding for certain mass-transit projects in California; the $220 million I-70 Missouri River Bridge project; the $162 million Tinian International Airport aircraft parking apron and taxiway project in the Northern Mariana Islands; and a $122 million military range project and a $98 million military housing project, both in Guam. The COVID-19 pandemic has resulted in significant revenue shortfalls for many state and local government agencies since 2020, and could continue to cause deferrals or cancellations of certain new projects, depending on the allocation and prioritization of state and local funding, as well as the availability, timing and magnitude of anticipated funding from the federal government, including funding from the recently enacted IIJA.

Backlog for the Civil segment was $4.4 billion as of December 31, 2022, down slightly compared to $4.6 billion as of December 31, 2021, a modest decrease of 5% compared to $4.8 billion as of December 31, 2020.2021. The segment continues to experience strong demand reflected in a large, multi-year pipeline of prospective projects, supported by substantial anticipated funding from various voter-approved transportation measures and the IIJA,BIL, and by public agencies’ long-term spending plans. The Civil segment is well-positioned to capture its share of these prospective projects.projects, but the timing of new awards remains uncertain.

Revenue and income from construction operations for the Building segment are summarized as follows:

Revenue for 20212022 decreased 28%13% compared to 2020,2021, primarily due to reduced project execution activities on certainvarious projects in California, Oklahoma and Oklahomathe Northeast that are completed or nearing completion.completion, partially offset by contributions from certain newer projects in California. Revenue for both 20202021 and 20212022 was also reduced by the aforementioned COVID-19 impacts.

Income from construction operations for 20212022 decreased 46%75% compared to 2020,2021, primarily due to volume reductions mentioned above, as well as a $13.3 million negative impact due to changes in estimatesreduced project execution activities on a transportation project in the Northeast that included a chargeis nearing completion and the temporary negative$11.3 million impact related to earningsan adverse legal decision on a hospitality project in Florida. In addition, the income from growthconstruction operations for both 2022 and 2021 were similarly unfavorably impacted by adjustments due to changes in unapproved change orders.estimates on the same transportation project in the Northeast ($15.7 million in 2022 and $13.3 million in 2021).

Operating margin was 0.6% in 2022 compared to 2.0% in 2021 compared to 2.7% in 2020.2021. The decrease in operating margin was driven by the factors mentioned above that drove the lower revenue and income from construction operations.

New awards in the Building segment totaled $1.2 billion in 2022 compared to $2.0 billion in 2021 compared to $897 million in 2020. The substantially increased level of new2021. New awards in 2021 was due to delays2022 included $211 million of certain new awardsadditional funding for two educational facility projects in 2020 that resulted from impactsCalifornia; a $126 million military facility project in Puerto Rico; a $95 million educational facility project in California; an $85 million military housing project in Alaska; and a $78 million health care project in California. The lingering effects of the COVID-19 pandemic. pandemic, including the proliferation of remote and hybrid work, as well as slowing economic conditions caused by higher inflation and rising interest rates, could continue to result in certain delayed or even canceled building project opportunities, particularly in the corporate office end market. However, other building end markets, such as correctional facilities, health care, education, and hospitality and gaming, continue to show strong demand for new and renovated facilities.

New awards in 2021 included the Cedars-Sinai Marina del Rey Hospital in California (contract value was not publicly announced)undisclosed); the $471 million LAX Airport Metro Connector project; the $269 million Yountville Veterans Home in California; and the $152 million Santa Rosa Courthouse project in California. The COVID-19 pandemic could continue to result in certain delayed project opportunities.

Backlog for the Building segment was $2.2 billion as of December 31, 2022, down slightly compared to $2.3 billion as of December 31, 2021, an increase of 36% compared to $1.7 billion as of December 31, 2020. The increase was driven by the heightened new award activity mentioned above.2021. The Building segment continues to have a large volume of prospective projects across various end markets and geographic locations. We expectHowever, as discussed above, there could continue to be reduced demand for our services in certain building end markets.

Revenue for 2022 decreased 27% compared to grow2021, primarily due to reduced project execution activities on the electrical and mechanical components of a transportation project in the Northeast that is nearing completion, reduced project execution activities on various other electrical and mechanical projects in the Northeast and California that are completed or nearing completion, as economic conditions remain conducivewell as revenue reductions associated with the various unfavorable impacts discussed in the paragraph below. Revenue for both 2021 and 2022 was also reduced by the aforementioned COVID-19 impacts.

Operating margin was (20.7)% in 2022 compared to (0.9)% in 2021. The decrease in operating margin was mainly attributable to the aforementioned factors that drove the larger loss from construction operations in 2022.

New awards in the Specialty Contractors segment totaled $729 million in 2022 compared to $631 million in 2021. The increase in new awards in 2022 was due in part to fewer lingering impacts from the COVID-19 pandemic as compared to the prior year, as project bidding and awarding activities resumed. However, the COVID-19 pandemic has resulted in, and could continue to result in, reduced demand for our building construction services.

Backlog for the Specialty Contractors segment was $1.3 billion as of December 31, 2022, down modestly compared to $1.4 billion as of December 31, 2021, a decrease of 26% compared to $1.9 billion as of December 31, 2020. The decrease corresponds with the reduction in Civil segment backlog, as certain large Civil segment projects that were not awarded to the Company would have included substantial amounts of subcontract work for the Specialty Contractors segment. The decrease is also due to lower demand from certain customers, particularly in New York, that have experienced adverse budgetary impacts as a result of the COVID-19 pandemic and that have consequently delayed and/or reduced certain spending.2021. The Specialty Contractors segment continues to be increasingly focused on servicing the Company’s backlog ofcurrent and prospective large Civil and Building segment projects, but alsoparticularly in the Northeast and California. In addition, the segment remains well-positioned to capture its share of new projects, for external customers, leveraging the size and scale of our business units that operate in New York, Texas, Florida and California and the strong reputation held by these business units for high-quality work on large, complex projects.

Corporate general and administrative expenses were $62.2 million in 2022 compared to $58.0 million in 2021 compared to $53.9 million in 2020.2021. The increase in corporate general and administrative expenses in 2022 compared to 2021 was predominantly due to higher travel-related expenses compared to 2020, when the COVID-19 pandemic caused significant travel reductions.compensation-related expenses.

Net otherOther income, for 2021 was $2.0net increased by $4.7 million in 2022 compared to net other expense of $11.9 million for 2020. The improvement in 2021 was primarily due to the absence of charges incurred in 2020 related to the unfavorable resolutions of certain disputes pertaining to past business acquisitions, which were not material.interest earned on federal income tax receivable balances.

Cash and cash equivalents were $259.4 million as of December 31, 2022 compared to $202.2 million as of December 31, 2021 compared to $374.3 million as of December 31, 2020.2021. Cash immediately available for general corporate purposes was $60.2$47.7 million and $210.8$60.2 million as of December 31, 20212022 and 2020,2021, respectively, with the remainder being amounts held by our consolidated joint ventures and also our proportionate share of cash held by our unconsolidated joint ventures. Cash held by our joint ventures wasis available only for joint venture-related uses, including distributions to joint venture partners. In addition, our restricted cash and restricted investments totaled $106.0 million as of December 31, 2022 compared to $93.6 million as of December 31, 2021 compared to $156.5 million as of December 31, 2020.2021. Restricted cash and restricted investments areat December 31, 2022 were primarily held to secure insurance-related contingent obligations. Restricted cash as of

During the year ended December 31, 2020 also included $69.92022, net cash provided by operating activities was $207.0 million, compared to net cash used in operating activities of $148.5 million in 2021, representing an increase of $355.5 million compared to 2021. The operating cash heldflow for 2022 was the largest result for any year since the merger between Tutor-Saliba Corporation and Perini Corporation in 2008. The record operating cash flow in 2022 was primarily due to repay the outstanding principal balancea decrease in investments in project working capital partially offset by cash utilized by earnings sources. The decrease in investments in project working capital was primarily due to improved collection activity, as reflected by a decrease in accounts receivable and an increase in billings in excess of the Convertible Notes, which were repaid at maturity on June 15, 2021 (see Note 7 of the Notes to Consolidated Financial Statements).

During 20212022 and 2020,2021, we used $65.6 million and $37.3 million and $46.4 million of net cash fromin investing activities, respectively. The net cash used in investing activities for 20212022 and 20202021 was primarily due to the acquisition of property and equipment for projects,(i.e., capital expenditures), which totaled $38.6$59.8 million and $54.8$38.6 million, respectively. The decreaseincrease in capital expenditures in 20212022 was primarily due to higher capital expenditures in 20202022 related to project-specific equipment funded directly by our customers.

During 2022, net cash used in financing activities was $78.9 million, which was primarily driven by net repayment of borrowings of $38.3 million and $47.4 million of cash distributions to noncontrolling interests, partially offset by $8.7 million of cash contributions from noncontrolling interests. During 2021, net cash used in financing activities was $54.7 million, which was primarily driven by net repayment of borrowings of $37.0 million and $22.7 million of cash distributions to noncontrolling interests, partially offset by $7.0 million of cash contributions from noncontrolling interests. During 2020, net cash provided by financing activities was $123.3 million, which was primarily driven by increased net borrowings of $181.4 million, partially offset by $48.5 million of cash distributions to noncontrolling interests and debt issuance costs of $11.2 million.

As of December 31, 2021,2022, we had working capital of $1.7 billion, a ratio of current assets to current liabilities of 1.87 and a ratio of debt to equity of 0.66 compared to working capital of $2.1 billion, a ratio of current assets to current liabilities of 2.17 and a ratio of debt to equity of 0.59 compared to working capital of $1.8 billion, a ratio of current assets to current liabilities of 1.80 and a ratio of debt to equity of 0.66 at December 31, 2020.2021.

Summarized below are the key terms of our debt as of December 31, 2021.2022. For additional information, refer to Note 7 of the Notes to Consolidated Financial Statements, as applicable.

On August 18, 2020, the Company entered into a credit agreement (the “2020 Credit Agreement”) with BMO Harris Bank N.A., as Administrative Agent, Swing Line Lender and L/C Issuer and other lenders. The 2020 Credit Agreement provides for a $425.0 million term loan B facility (the “Term Loan B”) and a $175.0 million revolving credit facility (the “2020 Revolver”“Revolver”), with sublimits for the issuance of letters of credit and swing line loans up to the aggregate amounts of $75.0 million and $10.0 million, respectively. The Term Loan B will mature on August 18, 2027 and the 2020 Revolver will mature on August 18, 2025, in each case, unless any of the 2017 Senior Notes are outstanding on January 30, 2025 (which is 91 days prior to the maturity of the 2017 Senior Notes), in which case, both the Term Loan B and the 2020 Revolver will mature on January 30, 2025 (subject to certain further exceptions).

Borrowings under the 2020 Credit Agreement bear interest at variable rates, which increased during 2022 due to changes in market conditions that resulted in increases in LIBOR, in the case of the Term Loan B, and the administrative agent’s prime lending rate in the case of the Revolver. The average borrowing rates on the Term Loan B and the Revolver for the year ended December 31, 2022 were approximately 6.7% and 8.8%, respectively. At December 31, 2022, the borrowing rates on the Term Loan B and the Revolver were 9.1% and 11.3%, respectively. For more information regarding the terms of our 2020 Credit Agreement, refer to Note 7 of the Notes to Consolidated Financial Statements.

The table below presents our actual and required first lien net leverage ratio under the 2020 Credit Agreement for the period, which is calculated on a rolling four-quarter basis:

On April 20, 2017, the Company issued $500 million in aggregate principal amount of 6.875% Senior Notes due May 1, 2025 (the “2017 Senior Notes”) in a private placement offering. Interest on the 2017 Senior Notes is payable in arrears semi-annually in May and November of each year, beginning in November 2017.

The Company has certain loans entered into for the purchase of specific property, plant and equipment and secured by the assets purchased. The aggregate balance of equipment financing loans was approximately $41.7$37.0 million and $36.9$41.7 million at December 31, 20212022 and 2020,2021, respectively, with interest rates ranging from 2.54% to 3.89%7.32% with equal monthly installment payments over periods up to five5 years. The aggregate balance of mortgage loans was approximately $14.6$11.6 million and $10.7

$14.6 million at December 31, 20212022 and 2020,2021, respectively, with interest rates ranging from a fixed 2.25% to LIBORSecured Overnight Financing Rate (“SOFR”) plus 3%2.00% and equal monthly installment payments over periods up to 10 years, as well as one loan with a balloon payment of $6.8 million due in 2023.years.

Our contractual obligations and commitments as of December 31, 20212022 include:

Our discussion and analysis of our financial condition and results of operations is based upon our Consolidated Financial Statements, which have been prepared in accordance with GAAP. Our significant accounting policies are described in Note 1 of the Notes to Consolidated Financial Statements. The preparation of the Consolidated Financial Statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. Estimates are based on information available through the date of the issuance of the financial statements; accordingly, actual results in future periods could differ from these estimates. Significant judgments and estimates used in the preparation of the Consolidated Financial Statements apply to the following critical accounting policies:

In certain instances, we provide guaranteed completion dates and/or achievement of other performance criteria. Failure to meet schedule or performance guarantees could result in unrealized incentive fees and/or liquidated damages. In addition, depending on the type of contract, unexpected increases in contract cost may be unrecoverable, resulting in total cost exceeding revenue realized from the projects. The Company generally provides limited warranties for work performed, with warranty periods typically extending for a limited duration following substantial completion of the Company’s work on a project. Historically, warranty claims have not resulted in material costs incurred.

The Company also evaluates whether it is the primary beneficiary of each VIE and consolidates the VIE if the Company has both (a) the power to direct the economically significant activities of the entity and (b) the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant to the VIE. The Company considers the contractual agreements that define the ownership structure, distribution of profits and losses, risks, responsibilities, indebtedness, voting

For construction joint ventures that do not need to be fully consolidated, the Company accounts for its interest in the joint ventures using the proportionate consolidation method, whereby the Company’s proportionate share of the joint ventures’ assets, liabilities, revenue and cost of operations are included in the appropriate classifications in the Company’s consolidated financial statements. Intercompany balances and transactions are eliminated. See Note 1(b) and Note 13 of the Notes to Consolidated Financial Statements for additional discussion regarding VIEs.

We test goodwill for impairment annually as of October 1 of each year. This test requires us to estimate the fair value of each reporting unit carrying goodwill using income and market approaches, and to compare the calculated fair value of each reporting unit to its carrying value, which is equal to the reporting unit’s net assets. If the calculated fair value of a reporting unit is less than its carrying value, we recognize an impairment charge equal to the difference.

The impairment evaluation process requires assumptions that are subject to a high degree of judgment such as revenue growth rates, profitability levels, discount rates, industry market multiples and weighted-average cost of capital. Changes in these assumptions would impact the results of our impairment tests.

During interim periods, including those subsequent to the Company’s October 1 annual test date, we evaluate events and circumstances, including, but not limited to, an examination of macroeconomic conditions, cost factors, overall financial performance by each reporting unit, other relevant entity-specific events, and trends in the stock prices of our Company and peers to determine if such factors indicate that it is likely that the goodwill for one or more of our reporting units is impaired, thus warranting the performance of a quantitative impairment test sooner than the fourth quarter of the year. The Company performed an interim impairment test as of June 1, 2019 and recognized a non-cash impairment loss totaling $379.9 million, which eliminated the carrying value of goodwill for the Building and Specialty Contractors reporting units. See Note 1(g) and Note 6 of the Notes to Consolidated Financial Statements.

During the fourth quarter of 2021,2022, we conducted our annual goodwill impairment test and determined that goodwill was not impaired since the estimated fair value of the Civil reporting unit exceeded its net book value by a significant amount. As such,However, there is a risk of goodwill impairment if future events are less favorable than what we assumed or estimated in our impairment analysis.

The Company has considered relevant events and circumstances since the annual goodwill impairment test, including, but not limited to, an examination of macroeconomic conditions, industry and market conditions, impacts from the COVID-19 pandemic, cost factors, overall financial performance by each reporting unit, other relevant entity-specific events, and trends in the stock prices of the Company and its peers. In considering the totality of qualitative factors known as of the reporting date, we determined that no triggering events occurred or circumstances changed since our October 1, 20212022 annual test that would more likely than not reduce the fair value of the Civil reporting unit below its carrying amount. We will continue to monitor events occurring or circumstances changing which may suggest that goodwill should be reevaluated. These events and circumstances include, but are not limited to, changes in the overall financial performance of the Civil reporting unit impacts to our business as a result of the COVID-19 pandemic, as well asand other quantitative and qualitative factors specific to the Civil reporting unit which indicate potential triggering events that would more likely than not reduce the fair value of the Civil reporting unit below its carrying amount.

(a) List of Documents Filed as a Part of This Report.

(b) Exhibits.

The following designated exhibits are, as indicated below, either filed herewith or have heretofore been filed with the SEC under the Securities Act or the Exchange Act and are referred to and incorporated herein by reference to such filings.

None.

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

To the Stockholders and the Board of Directors of Tutor Perini Corporation

We have audited the accompanying consolidated balance sheets of Tutor Perini Corporation and subsidiaries (the “Company”) as of December 31, 20212022 and 2020,2021, the related consolidated statements of operations, comprehensive income (loss), changes in equity, and cash flows, for each of the three years in the period ended December 31, 2021,2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 20212022 and 2020,2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2021,2022, in conformity with accounting principles generally accepted in the United States of America.

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

The Company recognizes revenue for construction contracts over the contract term (“over time”) as construction work progresses. The accounting for these contracts involves judgment, particularly as it relates to the process of determining total estimated revenue (transaction price) and estimating total costs to be incurred at contract completion. Costs of operations are typically recognized as incurred, and the Company’s revenues, including estimated profits, are recorded proportionately as costs are incurred based on the ratio of costs incurred to date to the total estimated costs at completion for the respective performance obligations. Assumptions as to the occurrence of future events and the likelihood and amount of variable consideration, including the impact of change orders, claims, contract disputes and the achievement of contractual performance criteria, and award or other incentive fees are made during the contract performance period (collectively referred to as “variable consideration”). The Company estimates variable consideration at the most likely amount it expects to receive and includes estimated amounts in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Also, the Company often engages subcontractors, suppliers, or vendors, to provide underlying materials or services, or a combination of both. Judgment

is involved in determining estimated recoveries from disputes regarding performance under these contracts (“back charges”), which are a reduction in costs and are recorded as a receivable on the consolidated balance sheet.

Given the significant judgment necessary to account for the Company’s construction contracts including the use of estimates, such as total estimated revenue, total costs to be incurred at contract completion, variable consideration and back charges, which are complex and subject to many variables, auditing the corresponding balances and related accounting estimates required extensive audit effort due to the complexity of these estimates, and a high degree of auditor judgment when performing audit procedures and evaluating the results of those procedures.

Our audit procedures related to management’s estimates and judgments included within the Company’s total estimated revenues, total costs to be incurred at contract completion, variable consideration, and back charges included the following, among others:

/s/ Deloitte & Touche LLP

Los Angeles, California

We have served as the Company's auditor since 2002.