TUTOR PERINI CORP

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(1)Basis of Presentation

The Condensed Consolidated Financial Statements do not include footnotes and certain financial information normally presented annually under generally accepted accounting principles in the United States (“GAAP”). Therefore, they should be read in conjunction with the audited consolidated financial statements and the related notes included in Tutor Perini Corporation’s (the “Company”) Annual Report on Form 10-K for the year ended December 31, 2023. The results of operations for the three months ended March 31, 2024 may not be indicative of the results that will be achieved for the full year ending December 31, 2024.

In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements reflect all adjustments, including those of a normal recurring nature, necessary to present fairly the Company’s consolidated financial position as of March 31, 2024 and its consolidated statements of operations and cash flows for the interim periods presented. Intercompany balances and transactions have been eliminated. Certain amounts in the condensed consolidated financial statements and notes thereto of prior years have been reclassified to conform to the current year presentation.

(2)Recent Accounting Pronouncements

In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (“Topic 280”): Improvements to Reportable Segment Disclosures (“ASU 2023-07”), which requires disclosure of incremental segment information on an interim and annual basis. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal periods beginning after December 15, 2024, and requires retrospective application to all prior periods presented in the financial statements. The Company is currently evaluating the impact of the guidance on the consolidated financial statements and disclosures.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (“Topic 740”): Improvements to Income Tax Disclosures (“ASU 2023-09”), which requires public entities to disclose specific categories in its annual effective tax rate reconciliation and disaggregated information about significant reconciling items by jurisdiction and by nature. ASU 2023-09 also requires entities to disclose their income tax payments (net of refunds) to international, federal, and state and local jurisdictions. This guidance is effective for fiscal years beginning after December 15, 2024, and requires prospective application with the option to apply it retrospectively. Early adoption is permitted. The Company is currently evaluating the impact of this guidance on the consolidated financial statements and disclosures.

(3)Revenue

Disaggregation of Revenue

The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depict how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the three months ended March 31, 2024 and 2023.

(a)The three-month period ended March 31, 2023 includes the negative impact of a non-cash charge of $83.6 million that resulted from an adverse legal ruling (of which $72.2 million impacted the Building segment and $11.4 million impacted the Specialty Contractors segment). Refer to Note 18, Business Segments, for additional details.

Changes in Contract Estimates that Impact Revenue

Changes to the total estimated contract revenue or cost for a given project, either due to unexpected events or revisions to management’s initial estimates, are recognized in the period in which they are determined. Net revenue recognized during the three months ended March 31, 2024 related to performance obligations satisfied (or partially satisfied) in prior periods wasimmaterial. Revenue was negatively impacted during the three months ended March 31, 2023 related to performance obligations satisfied (or partially satisfied) in prior periods by $108.0 million. Refer to Note 18, Business Segments, for additional details on significant adjustments.

Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. As of March 31, 2024, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $4.1 billion, $1.8 billion and $1.1 billion forthe Civil, Building and Specialty Contractors segments, respectively. As of March 31, 2023, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $4.4 billion, $2.2 billion and $1.2 billion for the Civil, Building and Specialty Contractors segments, respectively. The Company typically recognizes revenue on Civil segment projects over a period ofthree tofive years, whereas for projects in the Building and Specialty Contractors segments, the Company typically recognizes revenue over a period ofone tothree years.

(4)Contract Assets and Liabilities

The Company classifies contract assets and liabilities that may be settled beyond one year from the balance sheet date as current, consistent with the length of time of the Company’s project operating cycle.

Contract assets include amounts due under retention provisions, costs and estimated earnings in excess of billings and capitalized contract costs. The amounts as included on the Condensed Consolidated Balance Sheets consisted of the following:

Retention receivable represents amounts invoiced to customers where payments have been partially withheld pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retention agreements vary from project to project, and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress toward completion.

Costs and estimated earnings in excess of billings represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Costs and estimated earnings in excess of billings result when either: (1) the appropriate contract revenue amount has been recognized over time in accordance with Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”), but a portion of the revenue recorded cannot be billed currently due to the billing terms defined in the contract, or (2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and 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. Claims and unapproved change orders are billable upon the agreement and resolution between the contractual parties and after the execution of contractual amendments. Increases in claims and unapproved change orders typically result from costs being incurred against existing or new positions; decreases normally result from resolutions and subsequent billings. As discussed in Note 11, Commitments and Contingencies, the resolution of these claims and unapproved change orders may require litigation or other forms of dispute resolution proceedings. Other unbilled costs and profits are billable in accordance with the billing terms of each of the existing contractual arrangements and, as such, the timing of contract billing cycles can cause fluctuations in the balance of unbilled costs and profits. Ultimate resolution of other unbilled costs and profits typically involves incremental progress toward contractual requirements or milestones.

Capitalized contract costs are included in other current assets and primarily represent costs to fulfill a contract that (1) directly relate to an existing or anticipated contract, (2) generate or enhance resources that will be used in satisfying performance obligations in the future and (3) are expected to be recovered through the contract. Capitalized contract costs are generally expensed to the associated contract over the period of anticipated use on the project. During the three months ended March 31, 2024, $16.3 million of previously capitalized contract costs were amortized and recognized as expense on the related contracts. During the three months ended March 31, 2023, $10.8 million of previously capitalized contract costs were amortized and recognized as expense on the related contracts.

Contract liabilities include amounts owed under retention provisions and billings in excess of costs and estimated earnings. The amount as reported on the Condensed Consolidated Balance Sheets consisted of the following:

Retention payable represents amounts invoiced to the Company by subcontractors where payments have been partially withheld pending the completion of certain milestones, other contractual conditions or upon the completion of the project. Generally, retention payable is not remitted to subcontractors until the associated retention receivable from customers is collected.

Billings in excess of costs and estimated earnings represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue. Revenue recognized during the three months ended March 31, 2024 and 2023 and included in the opening billings in excess of costs and estimated earnings balances for each period totaled $482.0 million and $365.1 million, respectively.

(5)Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Condensed Consolidated Balance Sheets to the amounts shown in the Condensed Consolidated Statements of Cash Flows:

Cash equivalents include short-term, highly liquid investments with maturities of three months or less when acquired. Cash and cash equivalents consist of amounts available for the Company’s general purposes, the Company’s proportionate share of cash held by the Company’s unconsolidated joint ventures and 100% of amounts held by the Company’s consolidated joint ventures. In both cases, cash held by joint ventures is available only for joint venture-related uses, including future distributions to joint venture partners.

Restricted cash includes amounts primarily held as collateral to secure insurance-related contingent obligations, such as insurance claim deductibles, in lieu of letters of credit.

(6)Earnings Per Common Share

Basic earnings per common share (“EPS”) and diluted EPS are calculated by dividing net income (loss) attributable to Tutor Perini Corporation by the following: for basic EPS, the weighted-average number of common shares outstanding during the period; and for diluted EPS, the sum of the weighted-average number of both outstanding common shares and potentially dilutive securities, which for the Company can include restricted stock units (“RSUs”) and unexercised stock options. The Company calculates the effect of the potentially dilutive RSUs and stock options using the treasury stock method.

For the three months ended March 31, 2023, all outstanding RSUs and stock options were excluded from the calculation of weighted-average diluted shares outstanding, as the shares have an anti-dilutive effect due to the net loss for the period.

(7)Income Taxes

The Company recognized an income tax expense for the three months ended March 31, 2024 of $7.3 million resulting in an effective income tax rate of 21.0%. The effective income tax rate for the three months ended March 31, 2024 was consistent with the 21.0% federal statutory rate as the impacts of rate reductions from earnings attributable to noncontrolling interests (for which income taxes are not the responsibility of the Company) and federal income tax credits were offset by non-deductible expenses, share-based compensation adjustments and state income taxes (net of federal tax benefit).

The Company recognized an income tax benefit for the three months ended March 31, 2023 of $48.1 million resulting in an effective income tax rate of 49.6%. The effective income tax rate was higher than the 21.0% federal statutory rate primarily due to the pre-tax loss for the period and projected for the year. In periods reporting pre-tax losses, a tax benefit increases the effective income tax rate because it increases the tax benefit generated from the pre-tax loss. The tax benefits that caused a higher effective tax rate were primarily the earnings attributable to noncontrolling interests (for which income taxes are not the responsibility of the Company) and state income taxes (net of the federal tax benefit), partially offset by non-deductible expenses.

(8)Goodwill and Intangible Assets

Goodwill

The following table presents the changes in the carrying amount of goodwill since its inception through March 31, 2024:

The Company performed its annual impairment test in the fourth quarter of 2023 and concluded goodwill wasnot impaired. In addition, the Company determined that no triggering events occurred and no circumstances changed since the date of our annual impairment test that would more likely than not reduce the fair value of the Civil reporting unit below its carrying amount.

The Company will continue to monitor events and circumstances for changes that indicate the Civil reporting unit goodwill would need to be reevaluated for impairment during future interim periods prior to the annual impairment test. These future events and circumstances include, but are not limited to, changes in the overall financial performance of the Civil reporting unit, as well as other quantitative and qualitative factors which could indicate potential triggering events for possible impairment.

Intangible Assets

Intangible assets consist of the following:

Amortization expense related to amortizable intangible assets for both the three months ended March 31, 2024 and 2023 was $0.6 million. As of March 31, 2024, future amortization expense related to amortizable intangible assets will be approximately $1.7 million for the remainder of 2024, $2.2 million per year for the years 2025 through 2029 and $4.6 million thereafter.

The Company performed its annual impairment test for non-amortizable trade names during the fourth quarter of 2023. Based on this assessment, the Company concluded that its non-amortizable trade names were not impaired. In addition, the Company determined that no triggering events occurred and no circumstances changed since the date of our annual impairment test that would indicate impairment of its non-amortizable trade names. Other amortizable intangible assets are reviewed for impairment whenever circumstances indicate that the future cash flows generated by the assets might be less than the assets’ net carrying value. The Company hadno impairment of intangible assets during the three months ended March 31, 2024 or 2023.

(9)Financial Commitments

Long-Term Debt

Long-term debt as reported on the Condensed Consolidated Balance Sheets consisted of the following:

(a)Current maturities at December 31, 2023 included the $91.0 million principal prepayment on the Term Loan B that was made in February 2024.

The following table reconciles the outstanding debt balances to the reported debt balances as of March 31, 2024 and December 31, 2023:

The unamortized issuance costs related to the Revolver were $1.2 million and $1.4 million as of March 31, 2024 and December 31, 2023, respectively, and are included in other assets on the Condensed Conso lidated Balance Sheets.

2020 Credit Agreement

On August 18, 2020, the Company entered into a credit agreement (as amended, the “2020 Credit Agreement”) with BMO Bank N.A. (f/k/a BMO Harris Bank N.A.), as Administrative Agent, Swing Line Lender and L/C Issuer and other lenders. The 2020 Credit Agreement provided for a $425.0 million term loan B facility (the “Term Loan B”) and a $175.0 million (which will be reduced to $170.0 million following the effectiveness of the amendment to the 2020 Credit Agreement entered into on April 15, 2024, as described in further detail in Note 19, Subsequent Events) revolving credit facility (the “Revolver”), with sub-limits 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, except that if any of the 2017 Senior Notes (defined below) remain outstanding beyond future dates specified below, the maturity of certain amounts of the Term Loan B will be accelerated (“spring-forward maturity”). The spring-forward maturity provisions are as follows: (i) if on January 30, 2025, any of the 2017 Senior Notes remain outstanding, the maturity date for one tranche of the Term Loan B (representing 10.2% of the principal balance) shall be January 30, 2025 (which is 91 days prior to the maturity of the 2017 Senior Notes) and (ii) if on April 21, 2025, any of the 2017 Senior Notes remain outstanding, the maturity date for another tranche of the Term Loan B (representing 89.8% of the principal balance) shall be April 21, 2025 (which is 10 days prior to the maturity of the 2017 Senior Notes), subject to certain further exceptions. However, following the redemption of the 2017 Senior Notes, which will occur on May 2, 2024 (as described in further detail in Note 19, Subsequent Events), the spring-forward maturity in respect of both tranches of the Term Loan B will no longer be in effect. The Revolver will mature on August 18, 2025, unless any of the 2017 Senior Notes are outstanding on January 30, 2025, in which case any extensions of credit under the Revolver will mature and the commitments under the Revolver will be reduced to zero, in each case, on January 30, 2025, subject to certain further exceptions. However, following the effectiveness of the April 15, 2024 amendment described in further detail in Note 19, the Revolver will mature (a) if any tranche of the Term Loan B, any incremental term loan or any refinancing term loan (or any refinancing or replacement thereof) remains outstanding, the earlier of (i) May 20, 2027 and (ii) the date that is ninety (90) days prior to the final maturity of any tranche of the Term Loan B, any incremental term loan or any refinancing term loan (or any refinancing or replacement thereof), as applicable and (b) if no obligations are outstanding with respect to any tranche of the Term Loan B, any incremental term loan or any refinancing term loan, August 18, 2027.

On April 15, 2024, as described in further detail in Note 19, Subsequent Events, the Company entered into an amendment in respect of the 2020 Credit Agreement to, among other things, extend the maturity of the Revolver and permanently reduce the aggregate commitments in respect of the Revolver by $5.0 million from $175.0 million to $170.0 million. The effectiveness of the amendment is subject to the satisfaction or waiver of certain conditions precedent more fully described in Note 19, Subsequent Events.

The 2020 Credit Agreement permits the Company to repay any or all borrowings outstanding under the 2020 Credit Agreement at any time prior to maturity without penalty. The 2020 Credit Agreement requires the Company to make regularly scheduled payments of principal on the Term Loan B in quarterly installments equal to 0.25% of the initial principal amount of the Term Loan B. The 2020 Credit Agreement also requires the Company to make prepayments on the Term Loan B in connection with certain asset sales, receipts of insurance proceeds, incurrences of certain indebtedness and annual excess cash flow (in each case, subject to certain customary exceptions). At December 31, 2023, current maturities of long-term debt in the accompanying Condensed Consolidated Balance Sheet included $91.0 million prepayment of principal on the Term Loan B, relating to the mandatory prepayment provision of the 2020 Credit Agreement in respect of annual excess cash flow. The $91.0 million prepayment included in current maturities at December 31, 2023, which was due by the first week of April 2024, was paid in February 2024.

Subject to certain exceptions, at any time prior to maturity, the 2020 Credit Agreement provides the Company with the right to increase the commitments under the Revolver and/or to establish one or more term loan facilities in an aggregate amount up to (i) the greater of $173.5 million and 50% LTM EBITDA (as defined in the 2020 Credit Agreement) plus (ii) additional amounts if (A) in the case of pari passu first lien secured indebtedness, the First Lien Net Leverage Ratio (as defined in the 2020 Credit Agreement) does not exceed 1.35:1.00, (B) in the case of junior lien secured indebtedness, the Total Net Leverage Ratio (as defined in the 2020 Credit Agreement) does not exceed 3.50:1.00 and (C) in the case of unsecured indebtedness, (x) the Total Net Leverage Ratio does not exceed 3.50:1.00 or (y) the Fixed Charge Coverage Ratio (as defined in the 2020 Credit Agreement) is no less than 2.00:1.00.

Borrowings under the 2020 Credit Agreement bear interest, at the Company’s option, at a rate equal to (i) (A) in the case of the Term Loan B, following the amendment to the 2020 Credit Agreement on May 2, 2023 (as discussed below), (x) the Adjusted Term Secured Overnight Financing Rate (“Adjusted Term SOFR”) (calculated with a 11.448 basis point,26.161 basis point and 42.826 basis point credit spread adjustment for a 1, 3 and 6 month interest period, respectively) or (y) a base rate (determined by reference to the highest of (1) the administrative agent’s prime lending rate, (2) the federal funds effective rate plus 50 basis points and (3) the Adjusted Term SOFR rate for a one-month interest period plus 100 basis points) and (B) in case of the Revolver, following the amendment to the 2020 Credit Agreement on October 31, 2022 (as discussed below), (x) the Adjusted Term SOFR rate (calculated with a 10 basis point credit spread adjustment for all interest periods) or (y) a base rate (determined by reference to the highest of (1) the administrative agent’s prime lending rate, (2) the federal funds effective rate plus 50 basis points and (3) the Adjusted Term SOFR rate for a one-month interest period plus 100 basis points) plus, in each case, (ii) an applicable margin. The margin applicable to the Term Loan B is between 4.50% and 4.75% for Adjusted Term SOFR and between 3.50% and 3.75% for base rate, and, in each case, is based on the Total Net Leverage Ratio. The margin applicable to the Revolver is between 4.25% and 4.75% for Adjusted Term SOFR and 3.25% and 3.75% for base rate, and, in each case, is based on the First Lien Net Leverage Ratio. Effective following the amendment to the 2020 Credit Agreement on October 31, 2022, the Company’s original London Interbank Offered Rate (“LIBOR”) option in respect of the Revolver was transitioned to Adjusted Term SOFR. Effective May 2, 2023, the 2020 Credit Agreement was further amended to transition the Company’s original LIBOR option in respect of the Term Loan B to Adjusted Term SOFR. In addition to paying interest on outstanding principal under the 2020 Credit Agreement, the Company will pay a commitment fee to the lenders under the Revolver in respect of the unutilized commitments thereunder. The Company will pay customary letter of credit fees. If a payment or bankruptcy event of default occurs and is continuing, the otherwise applicable margin on overdue amounts will be increased by 2% per annum. The 2020 Credit Agreement includes customary provisions for the replacement of Adjusted Term SOFR with an alternative benchmark rate upon Adjusted Term SOFR being discontinued. There were no borrowings under the Revolver during the three months ended March 31, 2024. At March 31, 2024, the borrowing rate on the Revolver was 12.3%.

As amended, the 2020 Credit Agreement requires, solely with respect to the Revolver, the Company and its restricted subsidiaries to maintain a maximum First Lien Net Leverage Ratio of 3.50:1.00, effective the fiscal quarter ended December 31, 2022 and increasing to 3.75:1.00 for the fiscal quarter ending March 31, 2023 and subsequently stepping down to 3.00:1.00 for the fiscal quarter ending June 30, 2023,2.50:1.00 for the fiscal quarter ending September 30, 2023 and 2.25:1.00 for the fiscal quarter ending December 31, 2023 and each fiscal quarter thereafter. The 2020 Credit Agreement also includes certain customary representations and warranties, affirmative covenants and events of default. Subject to certain exceptions, substantially all of the Company’s existing and future material wholly-owned subsidiaries unconditionally guarantee the obligations of the Company under the 2020 Credit Agreement; additionally, subject to certain exceptions, the obligations are secured by a lien on substantially all of the assets of the Company and its subsidiaries guaranteeing these obligations.

As of March 31, 2024, the entire $175.0 million was available under the Revolver. The Company had not utilized the Revolver for letters of credit. The Company was in compliance with the financial covenant under the 2020 Credit Agreement for the period ended March 31, 2024.

2024 Senior Notes

On April 22, 2024, as described in further detail in Note 19, Subsequent Events, the Company issued $400.0 million in aggregate principal amount of 11.875% Senior Notes due April 30, 2029 (the “2024 Senior Notes”) in a private placement offering.

2017 Senior Notes

On April 20, 2017, the Company issued $500.0 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 may redeem the 2017 Senior Notes at specified redemption prices described in the indenture. Upon a change of control, holders of the 2017 Senior Notes may require the Company to repurchase all or part of the 2017 Senior Notes at 101% of the principal amount thereof, plus accrued and unpaid interest to the redemption date.

The 2017 Senior Notes are senior unsecured obligations of the Company and are guaranteed by substantially all of the Company’s existing and future subsidiaries that also guarantee obligations under the Company’s 2020 Credit Agreement, as defined above. In addition, the indenture for the 2017 Senior Notes provides for customary covenants, including events of default and restrictions on the payment of dividends and share repurchases.

As described in further detail in Note 19, Subsequent Events, the proceeds of the 2024 Senior Notes, together with cash on hand, will be used to redeem in full, all of the outstanding obligations in respect of the 2017 Senior Notes. A Notice of Conditional Full Redemption was delivered to holders of the 2017 Senior Notes on April 17, 2024, and the redemption of the 2017 Senior Notes will occur on May 2, 2024.

Interest Expense

Interest expense as reported in the Condensed Consolidated Statements of Operations consisted of the following:

(a)The combination of cash and non-cash interest expense produces effective interest rates that are higher than contractual rates. Accordingly, the effective interest rates for the 2017 Senior Notes and Term Loan B were 7.13% and 13.13%, respectively, for the three months ended March 31, 2024.

(10)Leases

The Company leases certain office space, construction and office equipment, vehicles and temporary housing generally under non-cancelable operating leases. Leases with an initial term of one year or less are not recorded on the balance sheet, and the Company generally recognizes lease expense for these leases on a straight-line basis over the lease term. As of March 31, 2024, the Company’s operating leases have remaining lease terms ranging from less thanone year to 14 years, some of which include options to renew the leases. The exercise of lease renewal options is generally at the Company’s sole discretion. The Company’s leases do not contain any material residual value guarantees or material restrictive covenants.

The following table presents components of lease expense for the three months ended March 31, 2024 and 2023:

(a)Short-term lease expense includes all leases with lease terms of up toone year. Short-term leases include, among other things, construction equipment rented on an as-needed basis as well as temporary housing.

The following table presents supplemental balance sheet information related to operating leases:

The following table presents supplemental cash flow information and non-cash activity related to operating leases:

The following table presents maturities of operating lease liabilities on an undiscounted basis as of March 31, 2024:

(11)Commitments and Contingencies

The Company and certain of its subsidiaries are involved in litigation and other legal proceedings and forms of dispute resolution in the ordinary course of business, including but not limited to disputes over contract payment and/or performance-related issues (such as disagreements regarding delay or a change in the scope of work of a project and/or the price associated with that change) and other matters incidental to the Company’s business. In accordance with ASC 606, the Company makes assessments of these types of matters on a routine basis and, to the extent permitted by ASC 606, estimates and records recovery related to these matters as a form of variable consideration at the most likely amount the Company expects to receive, as discussed further in Note 4, Contract Assets and Liabilities. In addition, the Company is contingently liable for litigation, performance guarantees and other commitments arising in the ordinary course of business, which are accounted for in accordance with ASC 450, Contingencies. Management reviews these matters regularly and updates or revises its estimates as warranted by subsequent information and developments. These assessments require judgments concerning matters that are inherently uncertain, such as litigation developments and outcomes, the anticipated outcome of negotiations and the estimated cost of resolving disputes. Consequently, these assessments are estimates, and actual amounts may vary from such estimates. In addition, because such matters are typically resolved over long periods of time, the Company’s assets and liabilities may change over time should the circumstances dictate. The description of the legal proceedings listed below include management’s assessment of those proceedings. Management believes that, based on current information and discussions with the Company’s legal counsel, the ultimate resolution of other matters is not expected to have a material effect on the Company’s consolidated financial position, results of operations or cash flows.

A description of the material pending legal proceedings, other than ordinary routine litigation incidental to the business is as follows:

Alaskan Way Viaduct Matter

In January 2011, Seattle Tunnel Partners (“STP”), a joint venture between Dragados USA, Inc. and the Company, entered into a design-build contract with the Washington State Department of Transportation (“WSDOT”) for the construction of a large-diameter bored tunnel in downtown Seattle, King County, Washington to replace the Alaskan Way Viaduct, also known as State Route 99. The Company has a 45% interest in STP.

The construction of the large-diameter bored tunnel required the use of a tunnel boring machine (“TBM”). In December 2013, the TBM struck a steel pipe, installed by WSDOT as a well casing for an exploratory well. The TBM was significantly damaged and was required to be repaired. STP has asserted that the steel pipe casing was a differing site condition that WSDOT failed to properly disclose. The Disputes Review Board mandated by the contract to hear disputes issued a decision finding the steel casing was a Type I (material) differing site condition. WSDOT did not accept that finding.

The TBM was insured under a Builder’s Risk Insurance Policy (the “Policy”) with Great Lakes Reinsurance (UK) PLC and a consortium of other insurers (the “Insurers”). STP submitted the claims to the Insurers and requested interim payments under the Policy. The Insurers refused to pay and denied coverage. In June 2015, STP filed a lawsuit in the King County Superior Court, State of Washington seeking declaratory relief concerning contract interpretation, as well as damages as a result of the Insurers’ breach of their obligations under the terms of the Policy. STP is also asserting extra-contractual and statutory claims against the Insurers. STP submitted damages to the Insurers in the King County lawsuit in the amount of $532 million. WSDOT is deemed a plaintiff since WSDOT is an insured under the Policy and had filed its own claim for damages. Hitachi Zosen (“Hitachi”), the manufacturer of the TBM, joined the case as a plaintiff for costs incurred to repair the damages to the TBM.

In April and September 2018, rulings received on pre-trial motions limited some of the potential recoveries under the Policy for STP, WSDOT and Hitachi. On August 2, 2021, the Court of Appeals reversed in part certain of those limitations but affirmed other parts of those rulings. On September 15, 2022, the Washington Supreme Court affirmed the decision of the Court of Appeals, which limits recovery of certain damages under the Policy. Based on the rulings of the Court of Appeals, the case will continue for adjudication on the remaining facts and legal issues, including the number of covered occurrences which could increase the amount of available coverage under the Policy and the amount of investigative costs that are subject to the Policy limits. STP also has claims for costs, fees, pre-judgment interest and extra-contractual and statutory claims, which are not subject to the Policy limits. The case has been scheduled for trial commencing September 23, 2024.

In addition, STP has a pending case in the Washington Superior Court against HNTB Corporation (“HNTB”), its design firm on the project, wherein STP alleges that HNTB is liable for providing design services that resulted in the TBM striking the steel pipe described above and for additional steel quantity costs associated with the project. STP’s complaint seeks in excess of $640 million. The case is scheduled for trial to commence on April 27, 2025.

With respect to STP’s direct and indirect claims against the Insurers and HNTB, management has included in receivables an estimate of the total anticipated recovery concluded to be probable.

In March 2016, WSDOT filed a complaint against STP in Thurston County Superior Court alleging breach of contract, seeking $57.2 million in delay-related damages and seeking declaratory relief concerning contract interpretation. STP subsequently filed a counterclaim against WSDOT seeking the same damages in excess of $640 million. The jury trial between STP and WSDOT commenced on October 7, 2019 and concluded on December 13, 2019, with a jury verdict in favor of WSDOT awarding them $57.2 million in damages. The Company recorded the impact of the jury verdict during the fourth quarter of 2019, resulting in a pre-tax charge of $166.8 million, which included $25.7 million for the Company’s 45% proportionate share of the $57.2 million in damages awarded by the jury to WSDOT. The charge was for non-cash write-downs primarily related to the costs and estimated earnings in excess of billings and receivables that the Company previously recorded to reflect its expected recovery in this case.

STP filed a petition for discretionary review by the Washington Supreme Court on July 12, 2022, which was denied by the Supreme Court on October 10, 2022. On October 18, 2022, STP paid the damages and associated interest from the judgment, which included the Company’s proportionate share of $34.6 million. As a result, the lawsuit between STP and WSDOT has concluded.

(12)Share-Based Compensation

As of March 31, 2024, there were 1,457,658 shares of common stock available for grant under the Tutor Perini Corporation Omnibus Incentive Plan. During the three months ended March 31, 2024 and 2023, the Company granted the following share-based instruments: (1) RSUs totaling 30,000 and 590,188, respectively, with weighted-average grant date fair values per unit of $12.68 and $8.66, respectively; (2) cash-settled performance stock units (“CPSUs”) totaling 645,180 and 901,541, respectively, with weighted-average grant date fair values per unit of $19.17 and $13.78, respectively; and (3) deferred cash awards (“DCAs”), including cash-settled stock units, with service-based vesting conditions and payouts indexed to shares of the Company’s common stock totaling 673,855 and 90,000, respectively, with weighted-average grant date fair values per unit of $12.75 and $8.98, respectively.

As of March 31, 2024 and December 31, 2023, the Company recognized liabilities for CPSUs, RSUs with guaranteed minimum payouts and DCAs on the Condensed Consolidated Balance Sheets totaling approximately$7.5 million and$4.9 million, respectively. During the three months ended March 31, 2024, the Company paid approximately $1.0 million, respectively, to settle certain awards.

For the three months ended March 31, 2024 and 2023, the Company recognized, as part of general and administrative expenses, costs for share-based payment arrangements totaling$5.5 million and$3.1 million, respectively. As of March 31, 2024, the balance of unamortized share-based compensation expense was$37.5 million, which is expected to be recognized over a weighted-average period of 2.4 years.

(13)Employee Pension Plans

The Company has a defined benefit pension plan and an unfunded supplemental retirement plan. Effective June 1, 2004, all benefit accruals under these plans were frozen; however, the current vested benefit was preserved. The pension disclosure presented below includes aggregated amounts for both of the Company’s plans.

The following table sets forth a summary of the net periodic benefit cost for the three months ended March 31, 2024 and 2023:

The Company contributed$0.7 million to its defined benefit pension plan during the three months ended March 31, 2024. The Company expects to contribute an additional$1.8 million in cash by the end of 2024. Due to availability of our prefunded pension balance related to the defined benefit pension plan, the Company was not required to make any cash payments during the three months ended March 31, 2023.

(14)Fair Value Measurements

The fair value hierarchy established by ASC 820, Fair Value Measurement, prioritizes the use of inputs used in valuation techniques into the following three levels:

•Level 1 inputs are observable quoted prices in active markets for identical assets or liabilities

•Level 2 inputs are observable, either directly or indirectly, but are not Level 1 inputs

•Level 3 inputs are unobservable

The following fair value hierarchy table presents the Company’s assets that are measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023:

(a)Includes money market funds and short-term investments with maturity dates ofthree months or less when acquired.

(b)Restricted investments, as of March 31, 2024 and December 31, 2023, consist of available-for-sale (“AFS”) debt securities, which are valued based on pricing models determined from a compilation of primarily observable market information, broker quotes in non-active markets or similar assets; therefore, they are classified as Level 2 assets.

(c)Investments in lieu of retention are included in retention receivable as of March 31, 2024 and December 31, 2023, and are composed of money market funds of $28.3 million and $20.0 million, respectively, and AFS debt securities of $87.6 million and $87.0 million, respectively. The fair values of the money market funds are measured using quoted market prices; therefore, they are classified as Level 1 assets. The fair values of AFS debt securities are determined from a compilation of primarily observable market information, broker quotes in non-active markets or similar assets; therefore, they are classified as Level 2 assets.

Investments in AFS debt securities consisted of the following as of March 31, 2024 and December 31, 2023:

The following table summarizes the fair value and gross unrealized losses aggregated by category and the length of time that individual securities have been in a continuous unrealized loss position as of March 31, 2024 and December 31, 2023:

The unrealized losses in AFS debt securities as of March 31, 2024 and December 31, 2023 are primarily attributable to market interest rate increases and not a deterioration in credit quality of the issuers. Management evaluated the unrealized losses in AFS debt securities considering factors including credit ratings and other relevant information, which may indicate that contractual cash flows are not expected to occur. Based on the analysis, management determined that credit losses did not exist for AFS debt securities in an unrealized loss position as of March 31, 2024 and December 31, 2023.

It is not considered likely that the Company will be required to sell the investments before full recovery of the amortized cost basis of the AFS debt securities, which may be at maturity. As a result, consistent with the same period in 2023, the Company has not recognized any impairment losses in earnings during the three months ended March 31, 2024.

The amortized cost and fair value of AFS debt securities by contractual maturity as of March 31, 2024 are summarized in the table below. Actual maturities may differ from contractual maturities because certain borrowers have the right to call or prepay certain obligations.

The carrying values of receivables, payables and other amounts arising out of normal contract activities, including retention, which may be settled beyond one year, are estimated to approximate fair value. Of the Company’s long-term debt, the fair value of the 2017 Senior Notes was $495.4 million and $490.9 million as of March 31, 2024 and December 31, 2023, respectively. The fair values of the 2017 Senior Notes were determined using Level 1 inputs, specifically current observable market prices. The fair value of the Term Loan B was $274.4 million and $358.9 million as of March 31, 2024 and December 31, 2023, respectively. The fair values of the Term Loan B were determined using Level 2 inputs, specifically third-party quoted market prices. The reported value of the Company’s remaining borrowings approximates fair value as of March 31, 2024 and December 31, 2023.

(15)Variable Interest Entities (VIEs)

The Company may form joint ventures or partnerships with third parties for the execution of projects. In accordance with ASC 810, Consolidation (“ASC 810”), the Company assesses its partnerships and joint ventures at inception to determine if any meet the qualifications of a VIE. The Company considers a joint venture a VIE if either (a) the total equity investment is not sufficient to permit the entity to finance its activities without additional subordinated financial support, (b) characteristics of a controlling financial interest are missing (either the ability to make decisions through voting or other rights, the obligation to absorb the expected losses of the entity or the right to receive the expected residual returns of the entity), or (c) the voting rights of the equity holders are not proportional to their obligations to absorb the expected losses of the entity and/or their rights to receive the expected residual returns of the entity, and substantially all of the entity’s activities either involve or are conducted on behalf of an investor that has disproportionately few voting rights. Upon the occurrence of certain events outlined in ASC 810, the Company reassesses its initial determination of whether a joint venture is a VIE.

ASC 810 also requires the Company to determine whether it is the primary beneficiary of the VIE. The Company concludes that it is the primary beneficiary and consolidates the VIE if the Company has both (a) the power to direct the economically significant activities of the VIE and (b) the obligation to absorb losses of, or the right to receive benefits from, the VIE 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 rights and board representation of the respective parties in determining if the Company is the primary beneficiary. The Company also considers all parties that have direct or implicit variable interests when determining whether it is the primary beneficiary. In accordance with ASC 810, management’s assessment of whether the Company is the primary beneficiary of a VIE is performed continuously.

As of March 31, 2024, the Company had unconsolidated VIE-related current assets and liabilities of $0.5 million and $0.1 million, respectively, included in the Company’s Condensed Consolidated Balance Sheets. As of December 31, 2023, the Company had unconsolidated VIE-related current assets and liabilities of $0.5 million and $0.1 million, respectively, included in the Company’s Condensed Consolidated Balance Sheets. The Company’s maximum exposure to loss as a result of its investments in unconsolidated VIEs is typically limited to the aggregate of the carrying value of the investment and future funding commitments. There were no future funding requirements for the unconsolidated VIEs as of March 31, 2024.

As of March 31, 2024, the Company’s Condensed Consolidated Balance Sheets included current and noncurrent assets of $473.2 million and $33.8 million, respectively, as well as current liabilities of $481.2 million related to the operations of its consolidated VIEs. As of December 31, 2023, the Company’s Condensed Consolidated Balance Sheets included current and noncurrent assets of $503.1 million and $35.1 million, respectively, as well as current liabilities of $505.0 million related to the operations of its consolidated VIEs.

Below is a discussion of some of the Company’s more significant or unique VIEs.

The Company established a joint venture to construct the Purple Line Extension Section 2 (Tunnels and Stations) and Section 3 (Stations) mass-transit projects in Los Angeles, California with an original combined value of approximately $2.8 billion. The Company has a 75% interest in the joint venture with the remaining 25% held by O&G Industries, Inc. The joint venture was initially financed with contributions from the partners and, per the terms of the joint venture agreement, the partners may be required to provide additional capital contributions in the future. The Company has determined that this joint venture is a VIE for which the Company is the primary beneficiary.

The Company also established a joint venture with Parsons Corporation (“Parsons”) to construct the Newark Liberty International Airport Terminal One project, a transportation infrastructure project in Newark, New Jersey with an original value of approximately $1.4 billion. The Company has an 80% interest in the joint venture with the remaining 20% held by Parsons. The joint venture was initially financed with contributions from the partners and, per the terms of the joint venture agreement, the partners may be required to provide additional capital contributions in the future. The Company has determined that this joint venture is a VIE for which the Company is the primary beneficiary.

(16)Changes in Equity

A reconciliation of the changes in equity for the three months ended March 31, 2024 and 2023 is provided below:

(17)Other Comprehensive Income (Loss)

ASC 220, Comprehensive Income, establishes standards for reporting comprehensive income and its components in the consolidated financial statements. The Company reports the change in pension benefit plan assets/liabilities, cumulative foreign currency translation and the unrealized gain (loss) of investments as components of accumulated other comprehensive income (loss) (“AOCI”).

The components of other comprehensive income (loss) and the related tax effects for the three months ended March 31, 2024 and 2023 were as follows:

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation and attributable to noncontrolling interests during the three months ended March 31, 2024 and 2023 were as follows:

The significant items reclassified out of AOCI and the corresponding location and impact on the Condensed Consolidated Statements of Operations during the three months ended March 31, 2024 and 2023 were as follows:

(a)Amounts included in other income, net on the Condensed Consolidated Statements of Operations.

(b)Amounts included in income tax (expense) benefit on the Condensed Consolidated Statements of Operations.

(18)Business Segments

The Company offers general contracting, pre-construction planning and comprehensive project management services, including planning and scheduling of manpower, equipment, materials and subcontractors required for the timely completion of a project in accordance with the terms and specifications contained in a construction contract. The Company also offers self-performed construction services: site work, concrete forming and placement, steel erection, electrical, mechanical, plumbing, and HVAC (heating, ventilation and air conditioning). As described below, the Company’s business is conducted through three segments: Civil, Building and Specialty Contractors. These segments are determined based on how the Company’s Chairman and Chief Executive Officer (chief operating decision maker) aggregates business units when evaluating performance and allocating resources.

The Civil segment specializes in public works construction and the replacement and reconstruction of infrastructure. The contracting services provided by the Civil segment include construction and rehabilitation of highways, bridges, tunnels, mass-transit systems, military facilities, and water management and wastewater treatment facilities.

The Building segment has significant experience providing services for private and public works customers in a number of specialized building markets, including: hospitality and gaming, transportation, health care, commercial offices, government facilities, sports and entertainment, education, correctional and detention facilities, biotech, pharmaceutical, industrial and technology.

The 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 the Company with unique strengths and capabilities that allow the Company to position itself as a full-service contractor with greater control over scheduled work, project delivery, and cost and risk management.

To the extent that a contract is co-managed and co-executed among segments, the Company allocates the share of revenues and costs of the contract to each segment to reflect the shared responsibilities in the management and execution of the project.

The following tables set forth certain reportable segment information relating to the Company’s operations for the three months ended March 31, 2024 and 2023:

(a)During the three months ended March 31, 2024, the Company’s income (loss) from construction operations was impacted by an unfavorable adjustment of $12.0 million ($8.8 million, or $0.17 per diluted share, after tax) due to an arbitration ruling that only provided a partial award to the Company pertaining to a completed Specialty Contractors segment electrical project in New York, as well as by a favorable adjustment of $10.2 million ($7.5 million, or $0.14 per diluted share, after tax) on a Civil segment mass-transit project in California related to a dispute resolution and associated expected cost savings.

(b)Consists primarily of corporate general and administrative expenses.

(c)Depreciation and amortization is included in income (loss) from construction operations.

(d)During the three months ended March 31, 2023, the Company’s income (loss) from construction operations was unfavorably impacted by an adverse legal ruling on a completed mixed-use project in New York, which resulted in a non-cash, pre-tax charge of $83.6 million ($60.1 million, or $1.17 per diluted share, after-tax), of which $72.2 million impacted the Building segment and $11.4 million impacted the Specialty Contractors segment, as well as an unfavorable adjustment of $28.0 million ($22.2 million, or $0.43 per diluted share, after tax) for a Civil segment mass-transit project in California, resulting from the successful negotiation of significant lower margin (and lower risk) change orders which increased the project’s overall estimated profit but reduced the project’s percentage of completion and overall margin percentage as of March 31, 2023.

A reconciliation of segment results to the consolidated income (loss) before income taxes is as follows:

Total assets by segment were as follows:

(a)Consists principally of cash, equipment, tax-related assets and insurance-related assets, offset by the elimination of assets related to intersegment revenue.

Major Customer

Revenue from a single customer with multiple projects, impacting the Civil, Building and Specialty Contractors segments, represented 18.7% and 19.5% of the Company’s consolidated revenue for the three months ended March 31, 2024 and March 31, 2023, respectively.

(19)Subsequent Events

2024 Senior Notes Issuance and 2017 Senior Notes Redemption

On April 22, 2024, the Company issued $400.0 million in aggregate principal amount of 11.875% Senior Notes due April 30, 2029 (the “2024 Senior Notes”) in a private placement offering. Interest on the 2024 Senior Notes is payable in arrears semi-annually in April and October of each year, beginning in October 2024.

Prior to April 30, 2026, the Company may redeem the 2024 Senior Notes at a redemption price equal to 100% of the principal amount plus a “make-whole” premium described in the indenture. In addition, prior to April 30, 2026, the Company may redeem up to 40% of the original aggregate principal amount of the notes at a redemption price of 111.875% of their principal amount with the proceeds received by the Company from any offering of the Company’s equity. On or after April 30, 2026, the Company may redeem the 2024 Senior Notes at specified redemption prices described in the indenture. Upon a change of control, holders of the 2024 Senior Notes may require the Company to repurchase all or part of the 2024 Senior Notes at 101% of the principal amount thereof, plus accrued and unpaid interest to the redemption date.

The 2024 Senior Notes are senior unsecured obligations of the Company and are guaranteed by the Company’s existing and future subsidiaries that also guarantee obligations under the Company’s 2020 Credit Agreement. In addition, the indenture for the 2024 Senior Notes provides for customary covenants on restricting certain payments and includes customary events of default.

The proceeds of the 2024 Senior Notes, together with cash on hand, will be used to redeem in full, all of the outstanding obligations in respect of the 2017 Senior Notes, resulting in a total net reduction to the Company’s outstanding principal debt balance of $100.0 million. A Notice of Conditional Full Redemption was delivered to holders of the 2017 Senior Notes on April 17, 2024, and the redemption of the 2017 Senior Notes will occur on May 2, 2024.

Amendment to 2020 Credit Agreement

On April 15, 2024, the Company entered into an amendment in respect of the 2020 Credit Agreement (the “Amendment”), which, among other changes (1) extends the existing Revolver maturity date from August 18, 2025 to (a) if any tranche of the Term Loan B, any incremental term loan or any refinancing term loan (or any refinancing or replacement thereof) remains outstanding, the earlier of (i) May 20, 2027 and (ii) the date that is ninety (90) days prior to the final maturity of any tranche of the Term Loan B, any incremental term loan or any refinancing term loan (or any refinancing or replacement thereof), as applicable, and (b) if no obligations are outstanding with respect to any tranche of the Term Loan B, any incremental term loan or any refinancing term loan, August 18, 2027 and (2) permanently reduces the aggregate commitments in respect of the Revolver by $5.0 million from $175.0 million to $170.0 million.

The Amendment is expected to become effective on or around the redemption date of the 2017 Senior Notes, subject to satisfaction or waiver of conditions to effectiveness thereunder (including, without limitation, the consummation of the refinancing of $500.0 million of the 2017 Senior Notes with the proceeds of the 2024 Senior Notes and cash on hand). If the Amendment does not become effective prior to May 15, 2024, the Amendment will become null and void and the contemplated amendments to the 2020 Credit Agreement will not be effective.