10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

FORM 10-Q

(Mark One)

☒	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended	September 30, 2021
or
☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from ___________ to ___________

Commission File Number: 1-6314

Tutor Perini Corporation

(Exact Name of Registrant as Specified in its Charter)

MASSACHUSETTS

(State or Other Jurisdiction of
Incorporation or Organization)

15901 OLDEN STREET, SYLMAR, CALIFORNIA

(Address of Principal Executive Offices)

04-1717070

(I.R.S. Employer Identification No.)

91342-1093

(Zip Code)

(818) 362-8391

(Registrant’s Telephone Number, Including Area Code)

None

(Former Name, Former Address and Former Fiscal Year, if Changed Since Last Report)

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $1.00 par value	TPC	The New York Stock Exchange

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

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

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

Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☐
Emerging growth company	☐

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

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

The number of shares of common stock, $1.00 par value per share, of the registrant outstanding at October 28, 2021 was 51,072,432.

TUTOR PERINI CORPORATION AND SUBSIDIARIES

TABLE OF CONTENTS

			Page Numbers
Part I.	Financial Information:
	Item 1.	Financial Statements:
		Condensed Consolidated Statements of Income for the Three and Nine Months Ended September 30, 2021 and 2020 (Unaudited)	3
		Condensed Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2021 and 2020 (Unaudited)	4
		Condensed Consolidated Balance Sheets as of September 30, 2021 and December 31, 2020 (Unaudited)	5
		Condensed Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2021 and 2020 (Unaudited)	6
		Notes to Condensed Consolidated Financial Statements (Unaudited)	7
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	39
	Item 4.	Controls and Procedures	39
Part II.	Other Information:
	Item 1.	Legal Proceedings	39
	Item 1A.	Risk Factors	39
	Item 4.	Mine Safety Disclosures	39
	Item 6.	Exhibits	40
	Signature		41

2

PART I. – FINANCIAL INFORMATION

Item 1. Financial Statements

TUTOR PERINI CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

UNAUDITED

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per common share amounts)	2021		2020		2021		2020
REVENUE	$	1,178,222	$	1,442,091	$	3,605,060	$	3,969,247
COST OF OPERATIONS	(1,064,245)		(1,317,176)		(3,253,139)		(3,615,498)
GROSS PROFIT	113,977		124,915		351,921		353,749
General and administrative expenses	(61,884)		(41,894)		(181,371)		(165,805)
INCOME FROM CONSTRUCTION OPERATIONS	52,093		83,021		170,550		187,944
Other income (expense)	(464)		(8,048)		1,142		(8,364)
Interest expense	(16,694)		(25,613)		(52,442)		(58,513)
INCOME BEFORE INCOME TAXES	34,935		49,360		119,250		121,067
Income tax expense	(8,694)		(37)		(26,293)		(14,747)
NET INCOME	26,241		49,323		92,957		106,320
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	10,847		12,504		30,364		33,421
NET INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$	15,394	$	36,819	$	62,593	$	72,899
BASIC EARNINGS PER COMMON SHARE	$	0.30	$	0.72	$	1.23	$	1.44
DILUTED EARNINGS PER COMMON SHARE	$	0.30	$	0.72	$	1.22	$	1.43
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING:
BASIC	51,072		50,787		50,995		50,598
DILUTED	51,366		51,241		51,364		51,004

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

3

TUTOR PERINI CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

UNAUDITED

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
NET INCOME	$	26,241	$	49,323	$	92,957	$	106,320
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Defined benefit pension plan adjustments	492		424		1,475		1,271
Foreign currency translation adjustments	(1,125)		1,102		(353)		(1,256)
Unrealized gain (loss) in fair value of investments	(448)		(225)		(1,412)		1,623
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	(1,081)		1,301		(290)		1,638
COMPREHENSIVE INCOME	25,160		50,624		92,667		107,958
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	10,400		13,024		30,493		32,775
COMPREHENSIVE INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$	14,760	$	37,600	$	62,174	$	75,183

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

4

TUTOR PERINI CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

UNAUDITED

(in thousands, except share and per share amounts)	As of September 30, 2021		As of December 31, 2020
ASSETS
CURRENT ASSETS:
Cash and cash equivalents ($72,473 and $105,735 related to variable interest entities (“VIEs”))	$	187,535	$	374,289
Restricted cash	6,922		77,563
Restricted investments	86,576		78,912
Accounts receivable ($99,841 and $86,012 related to VIEs)	1,426,709		1,415,063
Retainage receivable ($150,301 and $122,335 related to VIEs)	637,124		648,441
Costs and estimated earnings in excess of billings ($142,587 and $39,846 related to VIEs)	1,388,010		1,236,734
Other current assets ($44,851 and $51,746 related to VIEs)	204,555		249,455
Total current assets	3,937,431		4,080,457
PROPERTY AND EQUIPMENT (“P&E”), net of accumulated depreciation of $477,556 and $434,294 (net P&E of $2,413 and $12,840 related to VIEs)	440,982		489,217
GOODWILL	205,143		205,143
INTANGIBLE ASSETS, NET	96,469		123,115
OTHER ASSETS	147,725		147,685
TOTAL ASSETS	$	4,827,750	$	5,045,617
LIABILITIES AND EQUITY
CURRENT LIABILITIES:
Current maturities of long-term debt, net of unamortized discount and debt issuance costs totaling $0 and $2,040	$	28,029	$	100,188
Accounts payable ($75,333 and $116,461 related to VIEs)	656,135		794,611
Retainage payable ($34,620 and $26,439 related to VIEs)	286,036		315,135
Billings in excess of costs and estimated earnings ($340,943 and $362,427 related to VIEs)	754,939		839,222
Accrued expenses and other current liabilities ($9,892 and $9,595 related to VIEs)	207,850		215,207
Total current liabilities	1,932,989		2,264,363
LONG-TERM DEBT, less current maturities, net of unamortized discount and debt issuance costs totaling $17,921 and $20,209	939,955		925,277
DEFERRED INCOME TAXES	83,065		82,966
OTHER LONG-TERM LIABILITIES	241,123		230,066
TOTAL LIABILITIES	3,197,132		3,502,672
COMMITMENTS AND CONTINGENCIES (NOTE 11)
EQUITY
Stockholders' equity:
Preferred stock - authorized 1,000,000 shares ($1 par value), none issued	—		—
Common stock - authorized 112,500,000 shares ($1 par value), issued and outstanding 51,072,432 and 50,827,205 shares	51,072		50,827
Additional paid-in capital	1,132,396		1,127,385
Retained earnings	484,978		422,385
Accumulated other comprehensive loss	(47,160)		(46,741)
Total stockholders' equity	1,621,286		1,553,856
Noncontrolling interests	9,332		(10,911)
TOTAL EQUITY	1,630,618		1,542,945
TOTAL LIABILITIES AND EQUITY	$	4,827,750	$	5,045,617

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

5

TUTOR PERINI CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

UNAUDITED

	Nine Months Ended September 30,
(in thousands)	2021		2020
Cash Flows from Operating Activities:
Net income	$	92,957	$	106,320
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	65,550		55,755
Amortization of intangible assets	26,646		23,879
Share-based compensation expense	8,103		10,722
Change in debt discounts and deferred debt issuance costs	4,802		18,960
Deferred income taxes	124		22,137
(Gain) loss on sale of property and equipment	2,004		(2,609)
Changes in other components of working capital	(363,074)		(107,786)
Other long-term liabilities	11,225		3,899
Other, net	(955)		(309)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	(152,618)		130,968
Cash Flows from Investing Activities:
Acquisition of property and equipment	(27,162)		(43,396)
Proceeds from sale of property and equipment	5,236		13,320
Investments in securities	(25,541)		(22,692)
Proceeds from maturities and sales of investments in securities	16,443		19,901
NET CASH USED IN INVESTING ACTIVITIES	(31,024)		(32,867)
Cash Flows from Financing Activities:
Proceeds from debt	448,270		1,183,012
Repayment of debt	(510,146)		(1,004,259)
Cash payments related to share-based compensation	(1,627)		(1,697)
Distributions paid to noncontrolling interests	(17,250)		(37,217)
Contributions from noncontrolling interests	7,000		—
Debt issuance, extinguishment and modification costs	—		(10,701)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(73,753)		129,138
Net increase (decrease) in cash, cash equivalents and restricted cash	(257,395)		227,239
Cash, cash equivalents and restricted cash at beginning of period	451,852		202,101
Cash, cash equivalents and restricted cash at end of period	$	194,457	$	429,340

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

6

TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

UNAUDITED

(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, 2020. The results of operations for the three and nine months ended September 30, 2021 may not be indicative of the results that will be achieved for the full year ending December 31, 2021.

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 September 30, 2021 and its consolidated statements of income and cash flows for the interim periods presented. Intercompany balances and transactions have been eliminated. Certain amounts in the notes to the condensed consolidated financial statements of prior years have been reclassified to conform to the current year presentation.

(2)Recent Accounting Pronouncements

In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2019-12, Simplifying the Accounting for Income Taxes (“ASU 2019-12”), modifying Accounting Standards Codification (“ASC”) 740, Income Taxes (“ASC 740”). The amendments in ASU 2019-12, among other things, remove certain exceptions to the general principles in ASC 740 and seek more consistent application by clarifying and amending the existing guidance. The Company adopted this ASU effective January 1, 2021. The adoption of ASU 2019-12 did not have a material impact on the Company’s financial position, results of operations or cash flows.

(3)Revenue

Disaggregation of Revenue

The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depicts how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the three and nine months ended September 30, 2021 and 2020.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Civil segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	386,913	$	372,131	$	1,062,322	$	1,024,083
Bridges	67,117		104,722		179,059		246,006
Military defense facilities	46,615		44,246		140,736		102,898
Water	22,470		23,277		74,080		76,569
Highways	7,101		30,086		48,153		98,259
Other	16,002		37,534		72,795		119,786
Total Civil segment revenue	$	546,218	$	611,996	$	1,577,145	$	1,667,601

7

TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Building segment revenue by end market:
Commercial and industrial facilities	$	75,402	$	162,364	$	307,414	$	402,312
Hospitality and gaming	89,317		119,588		276,029		346,517
Municipal and government	76,471		66,505		222,855		215,230
Education facilities	39,528		50,425		123,988		129,085
Mass transit (includes transportation projects)	38,868		50,206		99,747		174,605
Health care facilities	20,287		26,344		44,294		94,651
Other	21,068		32,708		76,507		100,525
Total Building segment revenue	$	360,941	$	508,140	$	1,150,834	$	1,462,925

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Specialty Contractors segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	135,971	$	179,875	$	465,179	$	447,180
Commercial and industrial facilities	33,897		41,378		109,283		115,382
Multi-unit residential	28,054		39,014		101,498		103,118
Water	29,161		20,413		67,829		46,341
Education facilities	13,876		12,236		45,657		39,131
Other	30,104		29,039		87,635		87,569
Total Specialty Contractors segment revenue	$	271,063	$	321,955	$	877,081	$	838,721

	Three Months Ended September 30, 2021								Three Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	478,720	$	99,540	$	110,012	$	688,272	$	526,771	$	126,448	$	155,175	$	808,394
Federal agencies	48,680		50,437		14,716		113,833		48,861		32,392		29,362		110,615
Private owners	18,818		210,964		146,335		376,117		36,364		349,300		137,418		523,082
Total revenue	$	546,218	$	360,941	$	271,063	$	1,178,222	$	611,996	$	508,140	$	321,955	$	1,442,091

	Nine Months Ended September 30, 2021								Nine Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	1,350,555	$	268,396	$	377,016	$	1,995,967	$	1,426,644	$	430,212	$	401,671	$	2,258,527
Federal agencies	149,648		150,085		41,657		341,390		128,112		99,013		50,410		277,535
Private owners	76,942		732,353		458,408		1,267,703		112,845		933,700		386,640		1,433,185
Total revenue	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247

8

TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

	Three Months Ended September 30, 2021								Three Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	473,212	$	89,895	$	235,534	$	798,641	$	484,851	$	117,650	$	284,534	$	887,035
Guaranteed maximum price	502		219,395		5,420		225,317		179		308,299		1,923		310,401
Unit price	71,429		130		23,558		95,117		124,506		254		31,191		155,951
Cost plus fee and other	1,075		51,521		6,551		59,147		2,460		81,937		4,307		88,704
Total revenue	$	546,218	$	360,941	$	271,063	$	1,178,222	$	611,996	$	508,140	$	321,955	$	1,442,091

	Nine Months Ended September 30, 2021								Nine Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	1,353,436	$	269,693	$	775,292	$	2,398,421	$	1,349,750	$	401,957	$	743,241	$	2,494,948
Guaranteed maximum price	2,270		737,251		9,113		748,634		768		794,810		3,850		799,428
Unit price	212,678		(1,323)		80,558		291,913		307,654		1,417		70,784		379,855
Cost plus fee and other	8,761		145,213		12,118		166,092		9,429		264,741		20,846		295,016
Total revenue	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247

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. Revenue was negatively impacted during the three and nine month periods ended September 30, 2021 related to performance obligations satisfied (or partially satisfied) in prior periods by $2.1 million and $37.1 million, respectively. Likewise, revenue was negatively impacted during the three and nine month periods ended September 30, 2020 related to performance obligations satisfied (or partially satisfied) in prior periods by $30.4 million and $71.3 million, respectively.

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 September 30, 2021, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $4.4 billion, $1.8 billion and $1.4 billion for the Civil, Building and Specialty Contractors segments, respectively. As of September 30, 2020, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $5.1 billion, $1.9 billion and $1.9 billion for the Civil, Building and Specialty Contractors segments, respectively. The Company typically recognizes revenue on Civil segment projects over a period of three to five years, whereas for projects in the Building and Specialty Contractors segments, the Company typically recognizes revenue over a period of one to three 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.

9

TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

Contract assets include amounts due under retainage 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:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Retainage receivable	$	637,124	$	648,441
Costs and estimated earnings in excess of billings:
Claims	840,176		752,783
Unapproved change orders	448,600		415,489
Other unbilled costs and profits	99,234		68,462
Total costs and estimated earnings in excess of billings	1,388,010		1,236,734
Capitalized contract costs	72,543		74,452
Total contract assets	$	2,097,677	$	1,959,627

Retainage 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. Retainage 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 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, 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 and nine months ended September 30, 2021, $11.3 million and $36.6 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts. During the three and nine months ended September 30, 2020, $12.5 million and $35.2 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts.

10

TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

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

(in thousands)	As of September 30, 2021		As of December 31, 2020
Retainage payable	$	286,036	$	315,135
Billings in excess of costs and estimated earnings	754,939		839,222
Total contract liabilities	$	1,040,975	$	1,154,357

Retainage 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, retainage payable is not remitted to subcontractors until the associated retainage 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 and nine months ended September 30, 2021 and included in the opening billings in excess of costs and estimated earnings balances for each period totaled $288.0 million and $608.4 million, respectively. Revenue recognized during the three and nine months ended September 30, 2020 and included in the opening billings in excess of costs and estimated earnings balances for each period totaled $461.8 million and $662.7 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:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Cash and cash equivalents available for general corporate purposes	$	66,240	$	210,841
Joint venture cash and cash equivalents	121,295		163,448
Cash and cash equivalents	187,535		374,289
Restricted cash	6,922		77,563
Total cash, cash equivalents and restricted cash	$	194,457	$	451,852

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 primarily includes amounts held as collateral to secure insurance-related contingent obligations, such as insurance claim deductibles, in lieu of letters of credit. As of December 31, 2020, restricted cash also included $69.9 million held to repay the outstanding principal balance of Convertible Notes, as defined in Note 9, which matured and were repaid on June 15, 2021.

(6)Earnings Per Common Share

Basic earnings per common share (“EPS”) and diluted EPS are calculated by dividing net income 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 and unexercised stock options. Potentially dilutive securities also included the Convertible Notes (as defined in Note 9) prior to their repayment on June 15, 2021; however, the notes had no impact on diluted EPS. The Company calculates the effect of the potentially dilutive restricted stock units and stock options using the treasury stock method.

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	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per common share data)	2021		2020		2021		2020
Net income attributable to Tutor Perini Corporation	$	15,394	$	36,819	$	62,593	$	72,899
Weighted-average common shares outstanding, basic	51,072		50,787		50,995		50,598
Effect of dilutive restricted stock units and stock options	294		454		369		406
Weighted-average common shares outstanding, diluted	51,366		51,241		51,364		51,004
Net income attributable to Tutor Perini Corporation per common share:
Basic	$	0.30	$	0.72	$	1.23	$	1.44
Diluted	$	0.30	$	0.72	$	1.22	$	1.43
Anti-dilutive securities not included above	2,131		1,514		1,861		1,977

(7)Income Taxes

The Company’s effective income tax rates were 24.9% and 22.0% for the three and nine months ended September 30, 2021, respectively. The effective income tax rates for both periods were higher than the 21% federal statutory rate primarily due to state income taxes and adjustments recorded when the final 2020 tax return information became available, partially offset by earnings attributable to noncontrolling interests, for which income taxes are not the responsibility of the Company.

The Company’s effective tax rates for the three and nine months ended September 30, 2020 were 0.1% and 12.2%, respectively. The effective income tax rates were lower than the 21% federal statutory rate primarily due to the favorable tax rate differential realized on the 2019 net operating loss ("NOL") carryback and earnings attributable to noncontrolling interests, for which income taxes are not the responsibility of the Company. Under the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"), enacted on March 27, 2020, the NOL generated in 2019 may be carried back up to five years, whereas under previous rules NOLs were only allowed to be carried forward. This allowed the Company to realize the benefit of the tax rate differential by carrying back the NOL to tax years when the federal statutory tax rate was 35% rather than the current rate of 21%. The majority of the NOL benefit was recorded in the third quarter of 2020 when final tax return information was received from the Company's joint venture partners. These benefits to the effective tax rates for both periods of 2020 were partially offset by state income taxes, the impact of cancelled stock options and the lower vested amounts or forfeiture of restricted stock units, for which some or all of the share-based compensation expense recognized in prior periods was not deductible for income tax purposes.

(8)Goodwill and Intangible Assets

Goodwill

The following table presents the changes in the carrying amount of goodwill since its inception through September 30, 2021:

(in thousands)	Civil		Building		Specialty Contractors		Total
Gross goodwill as of December 31, 2020	$	492,074	$	424,724	$	156,193	$	1,072,991
Accumulated impairment as of December 31, 2020	(286,931)		(424,724)		(156,193)		(867,848)
Goodwill as of December 31, 2020	205,143		—		—		205,143
Current year activity	—		—		—		—
Goodwill as of September 30, 2021	$	205,143	$	—	$	—	$	205,143

The Company tests the goodwill allocated to its Civil reporting unit for impairment annually on October 1, or more frequently if events or circumstances indicate it is more likely than not that the fair value of the reporting unit is less than its carrying amount. The Company performed its annual impairment test in the fourth quarter of 2020 using a weighted average of an

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income and a market approach. These approaches utilize various valuation assumptions, and small changes to the assumptions could have a significant impact on the concluded fair value. Based on this assessment, the Company concluded goodwill was not impaired since the estimated fair value of the Civil reporting unit exceeded its carrying value. 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, impacts to our business as a result of the COVID-19 pandemic, 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:

	As of September 30, 2021								Weighted-Average Amortization Period
(in thousands)	Cost		Accumulated Amortization		Accumulated Impairment Charge		Carrying Value
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)	74,350		(25,620)		(23,232)		25,498		20 years
Contractor license	6,000		—		(6,000)		—		N/A
Customer relationships	39,800		(22,868)		(16,645)		287		12 years
Construction contract backlog	149,290		(129,016)		—		20,274		3 years
Total	$	387,040	$	(177,504)	$	(113,067)	$	96,469

	As of December 31, 2020								Weighted-Average Amortization Period
(in thousands)	Cost		Accumulated Amortization		Accumulated Impairment Charge		Carrying Value
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)	74,350		(23,754)		(23,232)		27,364		20 years
Contractor license	6,000		—		(6,000)		—		N/A
Customer relationships	39,800		(22,103)		(16,645)		1,052		12 years
Construction contract backlog	149,290		(105,001)		—		44,289		3 years
Total	$	387,040	$	(150,858)	$	(113,067)	$	123,115

Amortization expense for the three and nine months ended September 30, 2021 was $9.3 million and $26.6 million, respectively. Amortization expense for the three and nine months ended September 30, 2020 was $9.3 million and $23.9 million, respectively. As of September 30, 2021, amortization expense is estimated to be $9.3 million for the remainder of 2021, $14.4 million in 2022, $2.5 million per year for the years 2023 through 2026 and $12.4 million thereafter.

The Company performed its annual impairment test for non-amortizable trade names during the fourth quarter of 2020. 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.

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(9)Financial Commitments

Long-Term Debt

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

(in thousands)	As of September 30, 2021		As of December 31, 2020
2017 Senior Notes	$	495,994	$	495,271
Term Loan B	406,835		408,458
2020 Revolver	—		—
Convertible Notes(a)	—		67,878
Equipment financing and mortgages	54,381		47,594
Other indebtedness	10,774		6,264
Total debt	967,984		1,025,465
Less: Current maturities(a)	28,029		100,188
Long-term debt, net	$	939,955	$	925,277

____________________________________________________________________________________________________

(a)The Company repaid the remaining principal balance of the Convertible Notes at maturity on June 15, 2021. As of December 31, 2020, the balance of the Convertible Notes was included in current maturities on the Condensed Consolidated Balance Sheet.

The following table reconciles the outstanding debt balances to the reported debt balances as of September 30, 2021 and December 31, 2020:

	As of September 30, 2021						As of December 31, 2020
(in thousands)	Outstanding Debt		Unamortized Discounts and Issuance Costs		Debt, as reported		Outstanding Debt		Unamortized Discounts and Issuance Costs		Debt, as reported
2017 Senior Notes	$	500,000	$	(4,006)	$	495,994	$	500,000	$	(4,729)	$	495,271
Term Loan B	420,750		(13,915)		406,835		423,938		(15,480)		408,458
Convertible Notes	—		—		—		69,918		(2,040)		67,878

The unamortized issuance costs related to the 2020 Revolver were $2.2 million and $2.6 million as of September 30, 2021 and December 31, 2020, respectively, and are included in other assets on the Condensed Consolidated Balance Sheets.

2020 Credit Agreement

On August 18, 2020, the Company entered into a new 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”), 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).

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, except that the Company must pay a 1.00% premium in respect to the Term Loan B in connection with any transactions that reduce the yield applicable to the Term Loan B within the first twelve months after August 18, 2020 (subject to certain further exceptions). 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 unpermitted indebtedness and annual excess cash flow (subject to certain exceptions).

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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 2020 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) LIBOR or (b) 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 LIBOR rate for a one-month interest period plus 100 basis points) plus, (ii) an applicable margin. The margin applicable to the Term Loan B is between 4.50% and 4.75% for LIBOR and between 3.50% and 3.75% for base rate (which was initially 4.75% for LIBOR and 3.75% for base rate), and, in each case, is based on the Total Net Leverage Ratio. The margin applicable to the 2020 Revolver is between 4.25% and 4.75% for LIBOR and 3.25% and 3.75% for base rate (which was initially 4.75% for LIBOR and 3.75% for base rate), and, in each case, is based on the First Lien Net Leverage Ratio. 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 2020 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 agreement includes provisions for the replacement of LIBOR with an alternative benchmark rate in the event LIBOR is discontinued. The weighted-average annual interest rate on borrowings under the 2020 Revolver was 6.50% during the nine months ended September 30, 2021.

The 2020 Credit Agreement requires, with respect to the 2020 Revolver only, the Company and its restricted subsidiaries to maintain a maximum First Lien Net Leverage Ratio of 2.75:1:00, stepping down to 2.25:1.00 beginning the quarter ending March 31, 2022. 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 September 30, 2021, the entire $175 million was available under the 2020 Revolver and the Company had not utilized the 2020 Revolver for letters of credit. The Company was in compliance with the financial covenants under the 2020 Credit Agreement for the period ended September 30, 2021.

Termination of 2017 Credit Facility

On August 18, 2020, the Company used proceeds from the Term Loan B to repay outstanding amounts under its credit agreement (the “2017 Credit Facility”) with SunTrust Bank, now known as Truist Bank, as Administrative Agent, Swing Line Lender and L/C Issuer and a syndicate of other lenders, at which time the 2017 Credit Facility was terminated.

Repurchase and Repayment of Convertible Notes

On June 15, 2016, the Company issued $200 million of 2.875% Convertible Senior Notes due June 15, 2021 (the “Convertible Notes”) in a private placement offering. On August 19, 2020, the Company used proceeds from the Term Loan B to repurchase $130.1 million aggregate principal amount of the Convertible Notes for an aggregate purchase price of $132.4 million (including accrued and unpaid interest to the repurchase date). The Company repaid the remaining $69.9 million principal balance of the Convertible Notes at maturity on June 15, 2021 using proceeds from the Term Loan B, which were held in a restricted cash account for this purpose. None of the Convertible Notes remained outstanding as of September 30, 2021.

2017 Senior Notes

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 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.

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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.

Interest Expense

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Cash interest expense:
Interest on 2017 Senior Notes	$	8,594	$	8,594	$	25,781	$	25,781
Interest on Term Loan B	6,198		2,919		18,407		2,919
Interest on 2020 Revolver	436		26		1,109		26
Interest on 2017 Credit Facility	—		588		—		5,341
Interest on Convertible Notes	—		995		921		3,870
Other interest	532		577		1,422		1,616
Cash portion of loss on extinguishment	—		786		—		786
Total cash interest expense	15,760		14,485		47,640		40,339
Non-cash interest expense:(a)
Amortization of discount and debt issuance costs on Convertible Notes	—		2,073		2,040		7,870
Amortization of discount and debt issuance costs on Term Loan B	547		253		1,613		253
Amortization of debt issuance costs on 2020 Revolver	142		64		426		64
Amortization of debt issuance costs on 2017 Credit Facility	—		198		—		1,002
Amortization of debt issuance costs on 2017 Senior Notes	245		229		723		674
Non-cash portion of loss on extinguishment	—		8,311		—		8,311
Total non-cash interest expense	934		11,128		4,802		18,174
Total interest expense	$	16,694	$	25,613	$	52,442	$	58,513

____________________________________________________________________________________________________

(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, Term Loan B and the Convertible Notes were 7.13%, 6.48% and 9.39%, respectively, for the nine months ended September 30, 2021.

(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 September 30, 2021, the Company’s operating leases have remaining lease terms ranging from less than one year to 17 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.

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The following table presents components of lease expense for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Operating lease expense	$	3,660	$	3,563	$	11,085	$	10,991
Short-term lease expense(a)	17,951		24,502		57,377		64,823
	21,611		28,065		68,462		75,814
Less: Sublease income	176		193		522		851
Total lease expense	$	21,435	$	27,872	$	67,940	$	74,963

____________________________________________________________________________________________________

(a)Short-term lease expense includes all leases with lease terms ranging from less than one month to one 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:

(dollars in thousands)	Balance Sheet Line Item	As of September 30, 2021			As of December 31, 2020
Assets
Right-of-use assets	Other assets	$	55,845		$	55,897
Total lease assets		$	55,845		$	55,897
Liabilities
Current lease liabilities	Accrued expenses and other current liabilities	$	8,060		$	7,661
Long-term lease liabilities	Other long-term liabilities	51,690			51,336
Total lease liabilities		$	59,750		$	58,997
Weighted-average remaining lease term		11.9 years			12.5 years
Weighted-average discount rate		9.40		%	9.22		%

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

	Nine Months Ended September 30,
(in thousands)	2021		2020
Operating cash flow information:
Cash paid for amounts included in the measurement of lease liabilities	$	(10,344)	$	(11,026)
Non-cash activity:
Right-of-use assets obtained in exchange for lease liabilities	$	6,686	$	6,251

The following table presents maturities of operating lease liabilities on an undiscounted basis as of September 30, 2021:

Year (in thousands)	Operating Leases
2021 (excluding the nine months ended September 30, 2021)	$	3,422
2022	12,474
2023	9,688
2024	7,640
2025	6,803
Thereafter	66,473
Total lease payments	106,500
Less: Imputed interest	46,750
Total	$	59,750

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(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. 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:

Five Star Electric Matter

In the third quarter of 2015, Five Star Electric Corp. (“Five Star”), a wholly owned subsidiary of the Company that was acquired in 2011, entered into a tolling agreement (which has since expired) related to an ongoing investigation being conducted by the United States Attorney’s Office for the Eastern District of New York (“USAO EDNY”). Five Star has been cooperating with the USAO EDNY since late June 2014, when it was first made aware of the investigation, and has provided information requested by the government related to its use of certain minority-owned, women-owned, small and disadvantaged business enterprises and certain of Five Star’s employee compensation, benefit and tax practices.

As of September 30, 2021, the Company has concluded that the potential for a material adverse financial impact on Five Star or the Company as a result of the investigation is remote.

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

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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 1, 2021, STP, WSDOT and Hitachi sought discretionary review by the Washington Supreme Court of the portions of the Court of Appeals’ decision that affirmed the April and September 2018 decisions. STP also sought $532 million of damages from WSDOT related to the pipe-strike by the TBM in a related lawsuit in Thurston County (see following paragraph).

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 filed its answer to WSDOT’s complaint and filed a counterclaim against WSDOT and Hitachi, as the TBM designer, seeking damages of $667 million. On October 3, 2019, STP and Hitachi entered into a settlement agreement which released and dismissed the claims that STP and Hitachi had against each other. 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. Judgment was entered on January 10, 2020, and a notice of appeal was filed by STP on January 17, 2020.

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. The charge included a pre-tax accrual of $25.7 million (which is the Company’s 45% proportionate share of the $57.2 million in damages awarded by the jury to WSDOT). Payment of damages will only be made if the adverse verdict is upheld on appeal, as the payment is secured by a bond for the course of the appeal. Other than the possible future payment in cash of $25.7 million in damages, 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.

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

George Washington Bridge Bus Station Matter

In August 2013, Tutor Perini Building Corp. (“TPBC”) entered into a contract with the George Washington Bridge Bus Station Development Venture, LLC (the “Developer”) to renovate the George Washington Bridge Bus Station, a mixed-use facility owned by the Port Authority of New York and New Jersey (the “Port Authority”) that serves as a transit facility and retail space. The $100 million project experienced significant design errors and associated delays, resulting in damages to TPBC and its subcontractors, including WDF and Five Star, wholly owned subsidiaries of the Company. The project reached substantial completion on May 16, 2017.

On February 26, 2015, the Developer filed a demand for arbitration, subsequently amended, seeking $30 million in alleged damages and declaratory relief that TPBC’s requests for additional compensation are invalid due to lack of notice. TPBC denied the Developer’s claims and filed a counterclaim in March 2018. TPBC seeks in excess of $113 million in the arbitration, which includes unpaid contract balance claims, the return of $29 million retained by the Developer in alleged damages, as well as extra work claims, pass-through claims and delay claims.

Hearings on the merits commenced on September 24, 2018 before the arbitration panel. On June 4, 2019, the arbitration panel, as confirmed by the U.S. District Court in the Southern District of New York, issued a writ of attachment for $23 million of the $29 million discussed above. On October 7, 2019, the Developer filed for bankruptcy protection in the Southern District of New York under Chapter 11 of the Bankruptcy Code. The filing for bankruptcy stayed the pending arbitration proceedings. TPBC appeared in the bankruptcy proceedings on October 8, 2019 and filed a Proof of Claim in the amount of $113 million on December 13, 2019.

On June 5, 2020, the Developer, secured lenders and the Port Authority announced that they had reached a settlement of their disputes. As part of the settlement, the Port Authority waived the enforcement of its right to seek a “cure” pursuant to its lease agreement with the Developer which requires construction costs be paid prior to any sale of the leasehold, the sole asset in the Developer’s bankruptcy estate to be distributed in this bankruptcy. On July 14, 2020, the bankruptcy court conducted a hearing to determine (1) whether to approve the settlement agreement between the Developer, secured lenders and the Port Authority; and (2) whether TPBC can assert third-party beneficiary rights to the lease agreement and require that prior to the sale of the leasehold, any outstanding costs owed to contractors for the cost of building the project must be paid pursuant to the lease agreement’s “cure” provisions. On August 12, 2020, the bankruptcy court approved the settlement and denied TPBC’s third-party beneficiary rights under the lease agreement. On August 20, 2020, TPBC filed an appeal with the U.S. District Court for the Southern District of New York seeking to challenge the denial of its third-party beneficiary rights under the lease agreement’s “cure” provisions to avoid being subordinate to the claims of the secured lenders in the bankruptcy proceedings,

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which was denied by the U.S. District Court on August 4, 2021 and is now before the Second Circuit Court of Appeals. On August 25, 2021, the bankruptcy court approved the sale of the leasehold, which was completed on August 31, 2021. On October 1, 2021, the bankruptcy court converted the case from a Chapter 11 to a Chapter 7 bankruptcy proceeding.

Separately, on July 2, 2018, TPBC filed a lawsuit against the Port Authority, as owner of the project, seeking the same $113 million in damages pursuant to the lease agreement between the Port Authority and the Developer. On August 20, 2018, the Port Authority filed a motion to dismiss all causes of action, which was denied by the court on July 1, 2019. The Port Authority appealed this decision on July 15, 2019. On February 18, 2021, the Appellate Division affirmed in part and reversed in part the trial court's denial of the Port Authority's motion to dismiss TPBC’s causes of action. On March 29, 2021, the Port Authority filed a new motion to dismiss on additional grounds. In addition, on August 11, 2021, TPBC filed a second lawsuit against the Port Authority alleging tortious interference with TPBC’s right to recover under the lease agreement’s “cure” provision in the bankruptcy proceeding.

On January 27, 2020, TPBC filed separate litigation in the U.S. District Court for the Southern District of New York in which TPBC asserted related claims against individual owners of the Developer for their wrongful conversion of project funds and against lenders that received interest payments from project funds and other amounts earmarked to pay the contractors. On June 1, 2020, the defendants filed motions to dismiss, which were granted in part and denied in part, resulting in the lender defendants being dismissed from the lawsuit and the lawsuit against the individual owners of the Developer continuing. On July 26, 2021, the lawsuit was refiled in New York state court.

As of September 30, 2021, the Company has concluded that the potential for a material adverse financial impact due to the Developer’s claims is remote. With respect to TPBC’s claims against the Developer, its owners, certain lenders and the Port Authority, management has made an estimate of the total anticipated recovery on this project, and such estimate is included in revenue recorded to date.

(12)Share-Based Compensation

As of September 30, 2021, there were 1,036,709 shares of common stock available for grant under the Tutor Perini Corporation Omnibus Incentive Plan. During the nine months ended September 30, 2021 and 2020, the Company granted the following share-based instruments: (1) restricted stock units totaling 555,986 and 75,000 with weighted-average fair values per share of $16.52 and $13.93, respectively; and (2) stock options totaling 100,000 and 75,000 with weighted-average fair values per share of $15.21 and $3.94, respectively, and weighted-average per share exercise prices of $19.24 and $25.70, respectively; and (3) unrestricted stock units totaling 96,668 and 194,177 with weighted-average fair values per share of $15.62 and $8.60, respectively. The Company also granted 275,986 cash-settled performance stock units (“CPSUs”) with a weighted-average grant date fair value per share of $20.21 during the nine months ended September 30, 2021. CPSUs vest upon satisfaction of market or performance conditions and are settled in cash based on the value of the Company’s common stock on the vesting date. CPSUs are classified as liability awards and are remeasured at fair value at the end of each reporting period with the change in fair value recognized in earnings. Since no shares are issued, these awards do not dilute equity.

The fair value of restricted stock units and unrestricted stock is based on the closing price of the Company’s common stock on the New York Stock Exchange on the date of the grant and the fair value of stock options is based on the Black-Scholes model. The fair value of stock options granted during the first nine months of 2021 was determined using the Black-Scholes model based on the following weighted-average assumptions: (i) expected life of 6.5 years, (ii) expected volatility of 73.74%, (iii) risk-free rate of 1.44%, and (iv) no quarterly dividends. Certain performance-based awards contain market condition components and are valued on the date of grant using a Monte Carlo simulation model.

For certain restricted stock unit grants with guaranteed minimum payouts and CPSUs, the Company recognized liabilities totaling approximately $3.6 million and $2.4 million as of September 30, 2021 and December 31, 2020, respectively. The Company paid approximately $0.3 million to settle liability classified awards during each of the nine month periods ended September 30, 2021 and 2020.

For the three and nine months ended September 30, 2021, the Company recognized, as part of general and administrative expenses, costs for share-based payment arrangements totaling $3.1 million and $8.1 million, respectively, and $2.5 million and $10.7 million for the three and nine months ended September 30, 2020, respectively. As of September 30, 2021, the balance of unamortized share-based compensation expense was $20.6 million, which is expected to be recognized over a weighted-average period of 2.1 years.

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(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 and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Interest cost	$	582	$	758	$	1,746	$	2,273
Service cost	236		231		709		694
Expected return on plan assets	(1,015)		(1,006)		(3,045)		(3,017)
Recognized net actuarial losses	683		592		2,049		1,775
Net periodic benefit cost	$	486	$	575	$	1,459	$	1,725

The Company contributed $1.0 million and $3.2 million to its defined benefit pension plan during the nine months ended September 30, 2021 and 2020, respectively. Due to the election of certain options provided under the American Rescue Plan Act of 2021, enacted on March 11, 2021, the Company is not required to contribute additional amounts to the defined benefit pension plan for the remainder of 2021.

(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 September 30, 2021 and December 31, 2020:

	As of September 30, 2021								As of December 31, 2020
	Fair Value Hierarchy								Fair Value Hierarchy
(in thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash and cash equivalents(a)	$	187,535	$	—	$	—	$	187,535	$	374,289	$	—	$	—	$	374,289
Restricted cash(a)	6,922		—		—		6,922		77,563		—		—		77,563
Restricted investments(b)	—		86,576		—		86,576		—		78,912		—		78,912
Investments in lieu of retainage(c)	25,638		56,555		—		82,193		92,609		1,300		—		93,909
Total	$	220,095	$	143,131	$	—	$	363,226	$	544,461	$	80,212	$	—	$	624,673

____________________________________________________________________________________________________

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

(b)Restricted investments, as of September 30, 2021, consist of investments in corporate debt securities of $45.8 million, U.S. government agency securities of $40.0 million and corporate certificates of deposits of $0.8 million with maturities of up to five years, and are valued based on pricing models, which are determined from a compilation of primarily observable market information, broker quotes in non-active markets or similar assets and are therefore classified as Level 2 assets. As of December 31, 2020, restricted investments consisted of investments in U.S. government agency securities of $40.5 million, corporate debt securities of $37.5 million and corporate certificates of deposits of $0.9 million with

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maturities of up to five years. The amortized cost of these available-for-sale securities at September 30, 2021 and December 31, 2020 was not materially different from the fair value.

(c)Investments in lieu of retainage are included in retainage receivable and as of September 30, 2021 are comprised of corporate debt securities of $55.3 million, money market funds of $25.6 million and municipal bonds of $1.3 million. 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 corporate and municipal bonds have maturity periods up to five years, and are determined from a compilation of primarily observable market information, third-party quoted market prices, broker quotes in non-active markets or similar assets; therefore, they are classified as Level 2 assets. As of December 31, 2020, investments in lieu of retainage consisted of money market funds of $92.6 million and municipal bonds of $1.3 million. The amortized cost of these available-for-sale securities at September 30, 2021 and December 31, 2020 was not materially different from the fair value.

The carrying values of receivables, payables and other amounts arising out of normal contract activities, including retainage, 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 $513.6 million and $495.0 million as of September 30, 2021 and December 31, 2020, respectively. The fair value of the Convertible Notes was $69.1 million as of December 31, 2020 and the Company repaid the remaining principal balance of the notes at maturity on June 15, 2021. The fair values of the 2017 Senior Notes and Convertible Notes were determined using Level 1 inputs, specifically current observable market prices. The fair value of the Term Loan B was $420.8 million and $425.0 million as of September 30, 2021 and December 31, 2020, respectively. The fair value of the Term Loan B was 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 September 30, 2021 and December 31, 2020.

(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 September 30, 2021, the Company had unconsolidated VIE-related current assets and liabilities of $1.7 million and $1.5 million, respectively, included in the Company’s Condensed Consolidated Balance Sheet. As of December 31, 2020, the Company had unconsolidated VIE-related current assets and liabilities of $0.6 million and $0.5 million, respectively, included in the Company’s Condensed Consolidated Balance Sheet. 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 September 30, 2021.

As of September 30, 2021, the Company’s Condensed Consolidated Balance Sheet included current and noncurrent assets of $510.1 million and $3.3 million, respectively, as well as current liabilities of $460.8 million related to the operations of its consolidated VIEs. As of December 31, 2020, the Company’s Condensed Consolidated Balance Sheet included current and noncurrent assets of $405.7 million and $14.2 million, respectively, as well as current liabilities of $514.9 million related to the operations of its consolidated VIEs.

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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 and nine months ended September 30, 2021 and 2020 is provided below:

	Three Months Ended September 30, 2021
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - June 30, 2021	$	51,072	$	1,130,368	$	469,584	$	(46,526)	$	5,932	$	1,610,430
Net income	—		—		15,394		—		10,847		26,241
Other comprehensive loss	—		—		—		(634)		(447)		(1,081)
Share-based compensation	—		2,030		—		—		—		2,030
Issuance of common stock, net	—		(2)		—		—		—		(2)
Contributions from noncontrolling interests	—		—		—		—		3,000		3,000
Distributions to noncontrolling interests	—		—		—		—		(10,000)		(10,000)
Balance - September 30, 2021	$	51,072	$	1,132,396	$	484,978	$	(47,160)	$	9,332	$	1,630,618

	Nine Months Ended September 30, 2021
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - December 31, 2020	$	50,827	$	1,127,385	$	422,385	$	(46,741)	$	(10,911)	$	1,542,945
Net income	—		—		62,593		—		30,364		92,957
Other comprehensive income (loss)	—		—		—		(419)		129		(290)
Share-based compensation	—		6,787		—		—		—		6,787
Issuance of common stock, net	245		(1,776)		—		—		—		(1,531)
Contributions from noncontrolling interests	—		—		—		—		7,000		7,000
Distributions to noncontrolling interests	—		—		—		—		(17,250)		(17,250)
Balance - September 30, 2021	$	51,072	$	1,132,396	$	484,978	$	(47,160)	$	9,332	$	1,630,618

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UNAUDITED

	Three Months Ended September 30, 2020
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - June 30, 2020	$	50,771	$	1,124,672	$	350,071	$	(40,597)	$	(20,776)	$	1,464,141
Net income	—		—		36,819		—		12,504		49,323
Other comprehensive income	—		—		—		781		520		1,301
Share-based compensation	—		2,471		—		—		—		2,471
Convertible note repayment allocated to conversion option	—		(929)		—		—		—		(929)
Issuance of common stock, net	56		(759)		—		—		—		(703)
Distributions to noncontrolling interests	—		—		—		—		(6,307)		(6,307)
Balance - September 30, 2020	$	50,827	$	1,125,455	$	386,890	$	(39,816)	$	(14,059)	$	1,509,297

	Nine Months Ended September 30, 2020
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - December 31, 2019	$	50,279	$	1,117,972	$	313,991	$	(42,100)	$	(9,617)	$	1,430,525
Net income	—		—		72,899		—		33,421		106,320
Other comprehensive income (loss)	—		—		—		2,284		(646)		1,638
Share-based compensation	—		10,163		—		—		—		10,163
Convertible note repayment allocated to conversion option	—		(929)		—		—		—		(929)
Issuance of common stock, net	548		(1,751)		—		—		—		(1,203)
Distributions to noncontrolling interests	—		—		—		—		(37,217)		(37,217)
Balance - September 30, 2020	$	50,827	$	1,125,455	$	386,890	$	(39,816)	$	(14,059)	$	1,509,297

(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 change in fair value of investments as components of accumulated other comprehensive income (loss) (“AOCI”).

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The components of other comprehensive income (loss) and the related tax effects for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30, 2021						Three Months Ended September 30, 2020
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	683	$	(191)	$	492	$	592	$	(168)	$	424
Foreign currency translation adjustments	(1,389)		264		(1,125)		1,333		(231)		1,102
Unrealized loss in fair value of investments	(581)		133		(448)		(281)		56		(225)
Total other comprehensive income (loss)	(1,287)		206		(1,081)		1,644		(343)		1,301
Less: Other comprehensive income (loss) attributable to noncontrolling interests(a)	(447)		—		(447)		520		—		520
Total other comprehensive income (loss) attributable to Tutor Perini Corporation	$	(840)	$	206	$	(634)	$	1,124	$	(343)	$	781

____________________________________________________________________________________________________

(a)The only component of other comprehensive income (loss) attributable to noncontrolling interests is foreign currency translation.

	Nine Months Ended September 30, 2021						Nine Months Ended September 30, 2020
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	2,049	$	(574)	$	1,475	$	1,775	$	(504)	$	1,271
Foreign currency translation adjustments	(541)		188		(353)		(1,621)		365		(1,256)
Unrealized gain (loss) in fair value of investments	(1,828)		416		(1,412)		2,078		(455)		1,623
Total other comprehensive income (loss)	(320)		30		(290)		2,232		(594)		1,638
Less: Other comprehensive income (loss) attributable to noncontrolling interests(a)	129		—		129		(646)		—		(646)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation	$	(449)	$	30	$	(419)	$	2,878	$	(594)	$	2,284

____________________________________________________________________________________________________

(a)The only component of other comprehensive income (loss) attributable to noncontrolling interests is foreign currency translation.

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and nine months ended September 30, 2021 were as follows:

	Three Months Ended September 30, 2021
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2021	$	(43,104)	$	(5,126)	$	1,704	$	(46,526)
Other comprehensive loss before reclassifications	—		(678)		(391)		(1,069)
Amounts reclassified from AOCI	492		—		(57)		435
Total other comprehensive income (loss)	492		(678)		(448)		(634)
Balance as of September 30, 2021	$	(42,612)	$	(5,804)	$	1,256	$	(47,160)

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UNAUDITED

	Nine Months Ended September 30, 2021
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2020	$	(44,087)	$	(5,322)	$	2,668	$	(46,741)
Other comprehensive loss before reclassifications	—		(482)		(1,218)		(1,700)
Amounts reclassified from AOCI	1,475		—		(194)		1,281
Total other comprehensive income (loss)	1,475		(482)		(1,412)		(419)
Balance as of September 30, 2021	$	(42,612)	$	(5,804)	$	1,256	$	(47,160)

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and nine months ended September 30, 2020 were as follows:

	Three Months Ended September 30, 2020
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2020	$	(36,979)	$	(6,563)	$	2,945	$	(40,597)
Other comprehensive income (loss) before reclassifications	—		582		(3)		579
Amounts reclassified from AOCI	424		—		(222)		202
Total other comprehensive income (loss)	424		582		(225)		781
Balance as of September 30, 2020	$	(36,555)	$	(5,981)	$	2,720	$	(39,816)

	Nine Months Ended September 30, 2020
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2019	$	(37,826)	$	(5,371)	$	1,097	$	(42,100)
Other comprehensive income (loss) before reclassifications	—		(610)		1,878		1,268
Amounts reclassified from AOCI	1,271		—		(255)		1,016
Total other comprehensive income (loss)	1,271		(610)		1,623		2,284
Balance as of September 30, 2020	$	(36,555)	$	(5,981)	$	2,720	$	(39,816)

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TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

The significant items reclassified out of AOCI and the corresponding location and impact on the Consolidated Statements of Income during the three and nine months ended September 30, 2021 and 2020 were as follows:

	Location in Consolidated	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	Statements of Income	2021		2020		2021		2020
Component of AOCI:
Defined benefit pension plan adjustments	Other income (expense)	$	683	$	592	$	2,049	$	1,775
Income tax benefit	Income tax expense	(191)		(168)		(574)		(504)
Net of tax		$	492	$	424	$	1,475	$	1,271
Unrealized gain in fair value of investment adjustments	Other income (expense)	$	(73)	$	(281)	$	(246)	$	(323)
Income tax expense	Income tax expense	16		59		52		68
Net of tax		$	(57)	$	(222)	$	(194)	$	(255)

(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 defense 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 facilities, biotech, pharmaceutical, industrial and technology.

The Specialty Contractors segment specializes in electrical, mechanical, plumbing, HVAC, fire protection systems and pneumatically placed concrete 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.

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TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

The following tables set forth certain reportable segment information relating to the Company’s operations for the three and nine months ended September 30, 2021 and 2020:

	Reportable Segments
(in thousands)	Civil		Building		Specialty Contractors		Total			Corporate			Consolidated Total
Three Months Ended September 30, 2021
Total revenue	$	624,549	$	395,013	$	271,316	$	1,290,878		$	—		$	1,290,878
Elimination of intersegment revenue	(78,331)		(34,072)		(253)		(112,656)			—			(112,656)
Revenue from external customers	$	546,218	$	360,941	$	271,063	$	1,178,222		$	—		$	1,178,222
Income (loss) from construction operations	$	62,555	$	10,786	$	(5,470)	$	67,871		$	(15,778)	(a)	$	52,093
Capital expenditures	$	7,847	$	87	$	134	$	8,068		$	234		$	8,302
Depreciation and amortization(b)	$	26,234	$	416	$	777	$	27,427		$	2,634		$	30,061
Three Months Ended September 30, 2020
Total revenue	$	723,324	$	552,823	$	322,091	$	1,598,238		$	—		$	1,598,238
Elimination of intersegment revenue	(111,328)		(44,683)		(136)		(156,147)			—			(156,147)
Revenue from external customers	$	611,996	$	508,140	$	321,955	$	1,442,091		$	—		$	1,442,091
Income (loss) from construction operations	$	70,237	$	15,815	$	9,700	$	95,752	(c)	$	(12,731)	(a)	$	83,021
Capital expenditures	$	10,996	$	438	$	224	$	11,658		$	352		$	12,010
Depreciation and amortization(b)	$	26,659	$	419	$	1,002	$	28,080		$	2,778		$	30,858

____________________________________________________________________________________________________

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

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

(c)During the three months ended September 30, 2020, income (loss) from construction operations was positively impacted by $19.6 million (a favorable after-tax impact of $14.1 million, or $0.28 per diluted share) as a result of a favorable arbitration decision related to a dispute in the Specialty Contractors segment. This favorable impact was largely offset by an adverse impact of $15.2 million (an unfavorable after-tax impact of $10.9 million, or $0.21 per diluted share) due to an unfavorable legal ruling pertaining to a mechanical project in California in the Specialty Contractors segment.

28

TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

	Reportable Segments
(in thousands)	Civil		Building		Specialty Contractors		Total			Corporate			Consolidated Total
Nine Months Ended September 30, 2021
Total revenue	$	1,850,748	$	1,267,984	$	877,634	$	3,996,366		$	—		$	3,996,366
Elimination of intersegment revenue	(273,603)		(117,150)		(553)		(391,306)			—			(391,306)
Revenue from external customers	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060		$	—		$	3,605,060
Income (loss) from construction operations	$	187,733	$	19,514	$	5,814	$	213,061	(a)	$	(42,511)	(b)	$	170,550
Capital expenditures	$	26,027	$	211	$	298	$	26,536		$	626		$	27,162
Depreciation and amortization(c)	$	80,125	$	1,272	$	2,628	$	84,025		$	8,171		$	92,196
Nine Months Ended September 30, 2020
Total revenue	$	1,948,095	$	1,548,223	$	839,040	$	4,335,358		$	—		$	4,335,358
Elimination of intersegment revenue	(280,494)		(85,298)		(319)		(366,111)			—			(366,111)
Revenue from external customers	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247		$	—		$	3,969,247
Income (loss) from construction operations	$	181,756	$	37,120	$	6,591	$	225,467	(d)	$	(37,523)	(b)	$	187,944
Capital expenditures	$	41,139	$	636	$	952	$	42,727		$	669		$	43,396
Depreciation and amortization(c)	$	67,050	$	1,274	$	2,990	$	71,314		$	8,320		$	79,634

____________________________________________________________________________________________________

(a)During the nine months ended September 30, 2021, the Company recorded a reduction of $20.1 million in cost of operations (an after-tax impact of $14.6 million, or $0.28 per diluted share) due to a favorable legal judgment on a completed electrical project in New York in the Specialty Contractors segment. The judgment awarded the Company the recovery of certain costs previously incurred. The Company also recognized $18.1 million of additional revenue (an after-tax impact of $13.0 million, or $0.25 per diluted share) as a result of favorable adjustments on a Civil segment mass-transit project reflecting improved profitability due to the mitigation of certain risks as the project progresses toward completion. The Company’s income from construction operations was also negatively impacted by $14.5 million (an after-tax impact of $10.5 million, or $0.21 per diluted share) due to changes in estimates on an electrical project in New York in the Specialty Contractors segment that included unfavorable adjustments and the negative impact to the period associated with increases to project forecasts due to growth in unapproved change orders (expected to be negotiated in future periods).

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

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

(d)During the nine months ended September 30, 2020, income (loss) from construction operations was adversely impacted by $15.2 million (an unfavorable after-tax impact of $10.9 million, or $0.21 per diluted share) in the third quarter of 2020 due to an unfavorable legal ruling pertaining to a mechanical project in California in the Specialty Contractors segment, as well as by $13.2 million (an unfavorable after-tax impact of $9.5 million, or $0.19 per diluted share) in the second quarter of 2020 due to an adverse arbitration ruling pertaining to an electrical project in New York in the Specialty Contractors segment. These adverse impacts were mostly offset by $19.6 million (a favorable after-tax impact of $14.1 million, or $0.28 per diluted share) in the third quarter of 2020 as a result of a favorable arbitration decision related to a dispute in the Specialty Contractors segment.

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Income from construction operations	$	52,093	$	83,021	$	170,550	$	187,944
Other income (expense)	(464)		(8,048)		1,142		(8,364)
Interest expense	(16,694)		(25,613)		(52,442)		(58,513)
Income before income taxes	$	34,935	$	49,360	$	119,250	$	121,067

29

TUTOR PERINI CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

UNAUDITED

Total assets by segment were as follows:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Civil	$	3,255,994	$	3,141,991
Building	1,054,260		1,147,649
Specialty Contractors	654,946		673,891
Corporate and other(a)	(137,450)		82,086
Total assets	$	4,827,750	$	5,045,617

____________________________________________________________________________________________________

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

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TUTOR PERINI CORPORATION AND SUBSIDIARIES

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discusses our financial position as of September 30, 2021 and the results of our operations for the three and nine months ended September 30, 2021 and should be read in conjunction with other information, including the unaudited Condensed Consolidated Financial Statements and notes included in Part I, Item 1, Financial Information, of this Quarterly Report on Form 10‑Q, the audited consolidated financial statements and accompanying notes to our Annual Report on Form 10‑K for the year ended December 31, 2020, and the information contained under the heading “Risk Factors” in our Annual Report on Form 10‑K for the year ended December 31, 2020 and in Part II, Item 1A below.

Forward-Looking Statements

This Quarterly Report on Form 10‑Q, including the “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” contains forward-looking statements regarding future events and our future results, which are intended to be covered by the safe harbor provision for forward-looking statements provided by the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts are statements that could be deemed forward-looking statements. Words such as “achieve,” “anticipate,” “assumes,” “believes,” “continue,” “could,” “estimate,” “expects,” “forecast,” “hope,” “intend,” “may,” “plan,” “potential,” “predict,” “should,” “will,” “would,” variations of such words and similar expressions are intended to identify such forward-looking statements. In addition, any statements that refer to projections of our future financial performance, our anticipated growth and trends in our businesses, and other characterizations of future events or circumstances are forward-looking statements. Although such statements are based on currently available financial and economic data, as well as management’s estimates and expectations, forward-looking statements are inherently uncertain and involve risks and uncertainties that could cause our actual results to differ materially from what may be inferred from the forward-looking statements. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. Factors potentially contributing to such differences include, among others:

•Revisions of estimates of contract risks, revenue or costs; the timing of new awards; the pace of project execution; or economic factors, including inflation, may result in losses or lower than anticipated profit;

•Unfavorable outcomes of existing or future litigation or dispute resolution proceedings against customers (project owners, developers, general contractors, etc.), subcontractors or suppliers, as well as failure to promptly recover significant working capital invested in projects subject to such matters;

•The requirement to perform extra, or change order, work resulting in disputes or claims or adversely affecting our working capital, profits and cash flows;

•The impact of the COVID-19 pandemic and related events that are beyond our control, including possible effects on our business and operations, customers and suppliers, and employees, contractors and subcontractors, which could affect adversely our projects and the geographic regions in which we conduct business;

•A significant slowdown or decline in economic conditions;

•Increased competition and failure to secure new contracts;

•Risks and other uncertainties associated with assumptions and estimates used to prepare financial statements;

•Failure to meet contractual schedule requirements, which could result in higher costs and reduced profits or, in some cases, exposure to financial liability for liquidated damages and/or damages to customers;

•Client cancellations of, or reductions in scope under, contracts reported in our backlog;

•Inability to retain key members of our management, to hire and retain personnel required to complete projects or implement succession plans for key officers;

•Decreases in the level of government spending for infrastructure and other public projects;

•Possible systems and information technology interruptions, including due to cyberattack, systems failures or other similar events;

•Failure of our joint venture partners to perform their venture obligations, which could impose additional financial and performance obligations on us, resulting in reduced profits or losses and/or reputational harm;

•Economic, political, regulatory and other risks, including civil unrest, security issues, labor conditions, corruption and other unforeseeable events in countries where we do business, resulting in unanticipated losses;

•The impact of inclement weather conditions on projects;

•Risks related to government contracts and related procurement regulations;

•Violations of the U.S. Foreign Corrupt Practices Act and similar worldwide anti-bribery laws;

•Adverse health events, such as an epidemic or a pandemic;

•Failure to meet our obligations under our debt agreements;

•Downgrades in our credit ratings;

•Impairment of our goodwill or other indefinite-lived intangible assets; and

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•Uncertainty from the expected discontinuance of the London Interbank Offered Rate (“LIBOR”) and transition to any other interest rate benchmark.

Executive Overview

COVID-19 Update

Since the onset of the COVID-19 pandemic in early 2020, the pandemic has caused occasional shortages in available manpower, reductions in field labor productivity, other inefficiencies, delays to project schedules and deferrals of project execution. As a result, we continue to incur incremental costs, much of which we are seeking to recover from our customers as allowed by contractual terms. The relief sought from customers, some of which has already been received, together with certain incremental project opportunities that resulted from the pandemic, has helped to mitigate the pandemic's negative impact on our financial results. In addition, we continue to experience delays in certain legal proceedings, as various courts and other arbitrators process a large backlog of cases that were impacted by the pandemic. These delays in resolving and recovering on such claims continue to adversely affect our liquidity and financial results.

Until recently, the COVID-19 pandemic has had an adverse effect on the volume and timing of our new awards. This has negatively impacted our backlog and operating results. In addition, many of our state and local government customers’ revenue sources were negatively impacted by the pandemic due to severely curtailed ridership on mass-transit systems (buses, subways, trains, etc.), travel on commercial airlines, and driving by the general public, which resulted in reduced fare and toll collections, lower fuel tax receipts and reduced airport and other facility usage fees. Sales and other tax revenues were also negatively affected by reduced spending, as the retail, travel, hospitality and entertainment industries, among others, suffered through periodic government-imposed shut-downs or occupancy restrictions. The significant revenue reductions experienced by some of our customers have adversely impacted their ability to pay the Company timely for amounts due. The revenue reductions have also led to, and could result in, customers delaying bid solicitations and contract awards for some of their planned infrastructure projects. The potential for continued or new pandemic-related delays in project bids and awards could result in lower-than-expected revenue and earnings until such time as the federal government provides supplemental funding support to our customers (should that occur) or when customers’ funding uncertainties are otherwise resolved. The Biden Administration continues to work on securing congressional passage of a large-scale infrastructure funding bill, which, if passed, is expected to provide substantial incremental funding for various infrastructure projects nationwide over a multi-year period.

Due to the fluidity of the COVID-19 pandemic, uncertainties as to its scope and duration, and ongoing changes in the way that governments, businesses and individuals react and respond to the pandemic, the Company is unable at this time to accurately predict the pandemic’s future impact on the Company’s business, results of operations, financial condition or liquidity.

Operating Results

Consolidated revenue for the three and nine months ended September 30, 2021 was $1.2 billion and $3.6 billion, respectively, compared to $1.4 billion and $4.0 billion for the same periods in 2020. The decrease for both periods was primarily due to reduced project execution activities in the Building segment, as various projects have completed or are nearing completion, while newer projects that have been recently awarded are yet to contribute to revenue. Revenue for both periods of 2020 and 2021 was negatively impacted by the COVID-19 pandemic, which resulted in delays in new awards. The pandemic also caused delays in the execution of certain projects, which negatively impacted revenue for both periods of 2020 and the first nine months of 2021.

Income from construction operations decreased 37% and 9% for the three and nine months ended September 30, 2021, respectively, compared to the same periods in 2020. The decrease for the third quarter of 2021 was largely driven by the net impact of incrementally larger unfavorable adjustments on certain electrical projects in the Northeast in the Specialty Contractors segment in the third quarter of 2021 when compared to the prior-year quarter, which were immaterial individually and in the aggregate, as well as the absence in the current-year quarter of the net impact of a $19.6 million prior-year gain from a favorable arbitration decision, which reduced segment general and administrative expenses, and a $15.2 million prior-year charge due to an unfavorable legal ruling pertaining to a mechanical project in California. To a lesser extent, the decrease was also due to lower contributions from certain Civil segment projects in the Northeast and reduced contributions in all segments related to the COVID-19 impacts on revenue due to delays in new awards in prior periods. The decrease for the nine-month period of 2021 was primarily due to certain unfavorable adjustments in the Building segment, which were also immaterial individually and in the aggregate, reduced project execution activities on certain completing Building segment projects and reduced contributions in all segments associated with the COVID-19 impacts on revenue due to delays in new awards and the execution of certain projects. Both nine-month periods were negatively impacted by unfavorable adjustments to certain electrical projects in the Northeast in the Specialty Contractors segment. Additional factors that affected income from

32

construction operations within each of the Civil and Specialty Contractors segments are discussed below in the Results of Segment Operations section.

The effective tax rate was 24.9% and 22.0% for the three and nine months ended September 30, 2021, respectively, compared to 0.1% and 12.2% for the comparable periods in 2020. See Corporate, Tax and Other Matters below for a discussion of the change in the effective tax rate.

Net income attributable to the Company for the three and nine months ended September 30, 2021 was $15.4 million and $62.6 million, respectively, compared to $36.8 million and $72.9 million for the same periods in 2020. Diluted earnings per common share for the three and nine months ended September 30, 2021 was $0.30 and $1.22, respectively, compared to diluted earnings per common share of $0.72 and $1.43 for the same periods in 2020. The decrease in net income attributable to the Company, and correspondingly EPS, for both periods was primarily due to the factors discussed above that drove the decrease in income from construction operations.

Consolidated new awards for the three and nine months ended September 30, 2021 totaled $2.1 billion and $3.7 billion, respectively, compared to $0.6 billion and $1.9 billion for the same periods in 2020. The Building and Civil segments were the primary contributors to the new award activity in the third quarter of 2021. The most significant new awards in the third quarter of 2021 included a large health care facility project in California (contract value was not publicly announced); the $471 million LAX Airport Metro Connector project; the $220 million I-70 Missouri River Bridge project; a $122 million military range project and a $98 million military housing project, both in Guam; and the Company’s $71 million share of the $178 million Friant-Kern Canal project in California.

Consolidated backlog as of September 30, 2021 was $8.4 billion, up slightly compared to $8.3 billion at December 31, 2020 and up 12% compared to $7.5 billion at June 30, 2021. As of September 30, 2021, the mix of backlog by segment was approximately 54% for Civil, 29% for Building and 17% for Specialty Contractors. The increase in backlog in the third quarter of 2021 was driven by various new awards, including those mentioned above, as well as other smaller new awards and contract adjustments.

The following table presents the Company’s backlog by business segment, reflecting changes from December 31, 2020 to September 30, 2021:

(in millions)	Backlog at December 31, 2020		New  Awards(a)		Revenue  Recognized		Backlog at September 30, 2021(b)
Civil	$	4,783.6	$	1,308.7	$	(1,577.2)	$	4,515.1
Building	1,702.3		1,872.9		(1,150.8)		2,424.4
Specialty Contractors	1,859.8		486.2		(877.1)		1,468.9
Total	$	8,345.7	$	3,667.8	$	(3,605.1)	$	8,408.4

____________________________________________________________________________________________________

(a)New awards consist of the original contract price of projects added to backlog plus or minus subsequent changes to the estimated total contract price of existing contracts.

(b)Backlog may differ from the transaction prices allocated to the remaining performance obligations as disclosed in Note 3 of the Notes to Condensed Consolidated Financial Statements. Such differences relate to the timing of executing a formal contract or receiving a notice to proceed. More specifically, backlog sometimes may include awards for which a contract has not yet been executed or a notice to proceed has not been issued, but for which there are no remaining major uncertainties that the project will proceed (e.g., adequate funding is in place).

The Company is unable to predict the future impacts of the COVID-19 pandemic, due to, among other things, the uncertainty of vaccination coverage, infection rates, the duration of effectiveness of vaccinations, their effectiveness against current and future variants and how government entities and our customers respond to these factors. The outlook for the Company’s growth over the next several years remains favorable, but the impact of the COVID-19 pandemic could continue to adversely affect future performance and operations, and the amount and timing of new work awarded. In addition, the Company’s growth could continue to be impacted by future project delays or the timing of project commencements, ramp-up activities and completions. 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, voters in numerous states approved dozens of long-term transportation funding measures totaling approximately $200 billion in long-term funding. The largest of these was in Los Angeles County, where Measure M, a half-cent sales tax increase, was approved and is expected to generate $120 billion of funding over 40 years. In Seattle, Washington, Sound Transit 3 was passed and is expected to generate $54 billion of funding over 25 years. Interest rates have remained at historically low levels, which may be conducive to continued, and potentially increased, spending on infrastructure projects.

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There has long been strong, bipartisan support for infrastructure investments in the United States. Given the lack of substantial federal infrastructure spending over the past few decades and the negative economic impacts of the COVID-19 pandemic, there is currently a strong focus by the Biden Administration and congressional leaders to secure passage of a significant infrastructure bill. Should an infrastructure bill be approved, any substantial incremental federal funding, such as what is currently being contemplated, could directly and favorably impact the Company’s current work and prospective opportunities. The timing and content of such legislation, if any is adopted, and the amount of spending funded by it remain uncertain.

The Company has certain large civil projects in the Northeast that are completing or will be nearing completion in 2021. The Company is pursuing several large prospective projects on the West Coast, in the Northeast and in Guam that are expected to be bid and awarded later this year and in 2022. As a result, revenue will likely decline in 2021 because the timing and magnitude of revenue contributions from these prospective projects are not expected to offset revenue reductions associated with the projects that will be completed or progressing toward completion in 2021. In addition, as discussed above, the COVID-19 pandemic has resulted in, and could again result in, delays in the bidding and awarding of certain projects the Company is pursuing, which could further delay large new revenue streams.

For a more detailed discussion of operating performance of each business segment, corporate general and administrative expenses and other items, see Results of Segment Operations, Corporate, Tax and Other Matters and Liquidity and Capital Resources below.

Results of Segment Operations

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

Civil Segment

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Revenue	$	546.2	$	612.0	$	1,577.2	$	1,667.6
Income from construction operations	62.6		70.2		187.7		181.8

Revenue for the three and nine months ended September 30, 2021 decreased 11% and 5%, respectively, compared to the same periods in 2020. The decrease for both periods was primarily due to reduced project execution activities on various projects in the Northeast. Revenue for both periods of 2020 and 2021 was reduced by the aforementioned COVID-19 impacts.

Income from construction operations decreased 11% and increased 3% for the three and nine months ended September 30, 2021, respectively, compared to the same periods in 2020. The decrease for the third quarter of 2021 was primarily due to the impact of volume reductions in the Northeast, as mentioned above. Despite the modest revenue decline for the nine-month period of 2021, income from construction operations increased slightly due to contributions from higher-margin projects, including $18.1 million of favorable adjustments on a mass-transit project reflecting improved profitability due to the mitigation of certain risks as the project progresses toward completion. The increase was partially offset by the aforementioned volume reductions.

Operating margin was 11.5% and 11.9% for the three and nine months ended September 30, 2021, respectively, compared to 11.5% and 10.9% for the same periods in 2020. The margin increase for the nine-month period of 2021 was due to the above-mentioned factors that drove the changes in revenue and income from construction operations.

New awards in the Civil segment totaled $732 million and $1.3 billion for the three and nine months ended September 30, 2021, respectively, compared to $282 million and $838 million for the same periods in 2020. The most significant new awards in the third quarter of 2021 included the $220 million I-70 Missouri River Bridge project; a $122 million military range project and a $98 million military housing project, both in Guam; and the Company’s $71 million share of the $178 million Friant-Kern Canal project in California. There are several large Civil segment opportunities that have already been bid or are expected to be bid and/or potentially awarded to the Company later this year and in 2022. The COVID-19 pandemic has resulted in significant revenue shortfalls for many state and local government agencies since 2020, and may continue to cause the 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.

Backlog for the Civil segment was $4.5 billion as of September 30, 2021 compared to $5.2 billion as of September 30, 2020. The decrease has been the result of relatively fewer and smaller new awards thus far in 2021, primarily due to the timing of

34

recent and upcoming bids and potential new awards for large prospective projects and impacts from the COVID-19 pandemic on new awards. The segment continues to experience strong demand reflected in a large, multi-year pipeline of prospective projects, substantial anticipated funding from various voter-approved transportation measures and public agencies’ long-term spending plans. The Civil segment is well-positioned to continue capturing its share of these prospective projects.

Building Segment

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Revenue	$	360.9	$	508.1	$	1,150.8	$	1,462.9
Income from construction operations	10.8		15.8		19.5		37.1

Revenue for the three and nine months ended September 30, 2021 decreased 29% and 21%, respectively, compared to the same periods in 2020, primarily due to reduced project execution activities on certain projects in California that are completed or nearing completion. Revenue for both periods of 2020 and 2021 was reduced by the aforementioned COVID-19 impacts.

Income from construction operations for the three and nine months ended September 30, 2021 decreased 32% and 47%, respectively, compared to the same periods in 2020. The decrease for the three-month period of 2021 was primarily due to the volume reductions mentioned above. The decrease for the nine-month period of 2021 was primarily due to unfavorable adjustments on certain projects, which were immaterial individually and in the aggregate, as well as the volume reductions mentioned above.

Operating margin was 3.0% and 1.7% for the three and nine months ended September 30, 2021, respectively, compared to 3.1% and 2.5% for the same periods in 2020. The margin decrease for the nine-month period of 2021 was due to the aforementioned factors that drove the changes in revenue and income from construction operations.

New awards in the Building segment totaled $1.1 billion and $1.9 billion for the three and nine months ended September 30, 2021, respectively, compared to $186 million and $629 million for the same periods in 2020. The most significant new awards in the third quarter of 2021 included a large health care facility project in California (contract value was not publicly announced) and the $471 million LAX Airport Metro Connector project.

Backlog for the Building segment was $2.4 billion as of September 30, 2021 compared to $2.0 billion as of September 30, 2020. The increase was driven by the two large new awards mentioned above, as well as various other smaller new awards. The Building segment continues to have a large volume of prospective projects across various end markets and geographic locations. We expect demand to grow as economic conditions improve and customer spending increases, which continue to be supported by a historically low interest rate environment. However, the COVID-19 pandemic has resulted in, and could continue to result in, reduced demand for our building construction services.

Specialty Contractors Segment

Revenue and income (loss) from construction operations for the Specialty Contractors segment are summarized as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Revenue	$	271.1	$	322.0	$	877.1	$	838.7
Income (loss) from construction operations	(5.5)		9.7		5.8		6.6

Revenue for the three months ended September 30, 2021 decreased 16% compared to the same period in 2020. Revenue for the nine months ended September 30, 2021 was essentially level compared to the same period in 2020. The decrease for the third quarter of 2021 was principally driven by a net reduction in project execution activities on certain mechanical and electrical projects in the Northeast and California. Revenue for both periods of 2020 and 2021 was reduced by the aforementioned COVID-19 impacts.

Income (loss) from construction operations for the three months ended September 30, 2021 was $(5.5) million compared to $9.7 million for the comparable period in 2020. The decrease for the third quarter of 2021 was primarily due to the net impact of incrementally larger unfavorable adjustments on certain electrical projects in the Northeast, which were immaterial individually and in the aggregate, as well as the absence in the current-year quarter of the net impact of a $19.6 million prior-

35

year favorable arbitration decision and a $15.2 million prior-year unfavorable legal ruling pertaining to a mechanical project in California.

Income from construction operations for the nine months ended September 30, 2021 was $5.8 million compared to $6.6 million for the comparable period in 2020. The slight decrease was due to the net impact of many larger offsetting items, including an unfavorable $23.7 million current-year impact of changes in estimates on certain electrical projects in New York that included unfavorable adjustments and the negative impact to the period associated with increases to project forecasts due to growth in unapproved change orders (expected to be negotiated in future periods), with one of the projects having a negative impact of $14.5 million. The decrease was also driven by the absence in the current year of the net impact of the aforementioned favorable arbitration decision and unfavorable legal ruling. The decrease for the nine-month period was mostly offset by a $20.1 million favorable adjustment in the second quarter of 2021 related to a legal judgment on a completed electrical project in New York and the absence of a $13.2 million prior-year impact from an adverse arbitration ruling related to another electrical project in New York.

Operating margin was (2.0)% and 0.7% and for the three and nine months ended September 30, 2021, respectively, compared to 3.0% and 0.8% for the same periods in 2020. The decrease in operating margin for the third quarter of 2021 was principally due to the aforementioned factors that drove the changes in revenue and income (loss) from construction operations.

New awards in the Specialty Contractors segment totaled $191 million and $486 million for the three and nine months ended September 30, 2021, respectively, compared to $157 million and $463 million for the same periods in 2020. The COVID-19 pandemic has resulted in, and could continue to result in, reduced demand from certain commercial and government customers that have been experiencing funding constraints.

Backlog for the Specialty Contractors segment was $1.5 billion as of September 30, 2021 compared to $2.0 billion as of September 30, 2020. The decrease was driven by revenue that has exceeded the volume of new awards thus far in 2021, as new awards for the segment have continued to be negatively impacted by the COVID-19 pandemic. The Specialty Contractors segment continues to be increasingly focused on servicing the Company’s backlog of large Civil and Building segment projects, but also 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, Tax and Other Matters

Corporate General and Administrative Expenses

Corporate general and administrative expenses were $15.8 million and $42.5 million during the three and nine months ended September 30, 2021, respectively, compared to $12.7 million and $37.5 million during the three and nine months ended September 30, 2020, respectively. The increase in the three and nine months ended September 30, 2021 was primarily due to higher compensation expenses and travel-related expenses compared to the same periods in 2020.

Other Income (Expense), Interest Expense and Income Tax Expense

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Other income (expense)	$	(0.5)	$	(8.1)	$	1.1	$	(8.4)
Interest expense	(16.7)		(25.6)		(52.4)		(58.5)
Income tax expense	(8.7)		—		(26.3)		(14.7)

Other income (expense) improved by $7.6 million and $9.5 million for the three and nine months ended September 30, 2021, respectively, compared to the same periods in 2020. The improvements in the 2021 periods were primarily due to the absence of a charge in 2020 related to the unfavorable resolution of a dispute pertaining to a past business acquisition.

Interest expense decreased $8.9 million and $6.1 million for the three and nine months ended September 30, 2021, respectively, compared to the same periods in 2020. The decreases in the 2021 periods were primarily due to the absence of extinguishment costs recognized in 2020 related to debt refinancing.

The effective tax rate was 24.9% and 22.0% for the three and nine months ended September 30, 2021, respectively, compared to 0.1% and 12.2% for the same periods in 2020, respectively. The higher effective income tax rate for the three and nine months ended September 30, 2021 is primarily due to the absence of the favorable rate impact recognized in the 2020 periods

36

from the net operating loss carryback as a result of the Coronavirus Aid, Relief, and Economic Security Act. For a further discussion of income taxes, refer to Note 7 of the Notes to Condensed Consolidated Financial Statements.

Liquidity and Capital Resources

Liquidity is provided by available cash and cash equivalents, cash generated from operations, credit facilities and access to capital markets. We have a committed line of credit totaling $175 million, which may be used for revolving loans, letters of credit and/or general purposes. We believe that cash generated from operations, along with our unused credit capacity of $175 million and available cash balances as of September 30, 2021, will be sufficient to fund any working capital needs and debt maturities for the next 12 months, provided that we are not adversely impacted by unanticipated future events, including further impacts related to the COVID-19 pandemic as discussed above in COVID-19 Update. However, liquidity is being, and could continue to be, adversely impacted by our inability to collect cash due to the follow-on impacts of COVID-19, which have constrained certain customers’ funding sources and delayed their ability to make payments on approved contract work. In addition, the follow-on effects of COVID-19 have further hindered the Company’s ability to resolve unapproved work, resulting in the need for the Company to temporarily fund certain project costs that would normally be more promptly negotiated, billed to and collected from the customer, which has largely contributed to an increase in costs and estimated earnings in excess of billings (“CIE”). The timing of collection of amounts due to the Company and the timing of resolution of these other matters remain uncertain.

Cash and Working Capital

Cash and cash equivalents were $187.5 million as of September 30, 2021 compared to $374.3 million as of December 31, 2020. Cash immediately available for general corporate purposes was $66.2 million and $210.8 million as of September 30, 2021 and December 31, 2020, 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 was available only for joint venture-related uses, including distributions to joint venture partners. In addition, our restricted cash and restricted investments totaled $93.5 million as of September 30, 2021 compared to $156.5 million as of December 31, 2020. Restricted cash and restricted investments at September 30, 2021 were primarily held to secure insurance-related contingent obligations. Restricted cash as of December 31, 2020 also included cash held to repay the $69.9 million outstanding principal balance of the Convertible Notes, which were repaid at maturity on June 15, 2021 (see Note 9 of the Notes to Condensed Consolidated Financial Statements).

During the nine months ended September 30, 2021, net cash used in operating activities was $152.6 million, due primarily to investments in project working capital partially offset by cash generated from earnings sources. The increase in working capital for the first nine months of 2021 primarily reflects an increase in CIE and a decrease in accounts payable due to timing of payments to suppliers and subcontractors. The increase in CIE was primarily due to the follow-on impacts of the COVID-19 pandemic, which has caused delays in the negotiation and resolution of certain claims and unapproved change orders (due to the postponement or deferrals of certain legal and arbitration proceedings and settlement discussions), and constrained customers’ revenue and funding sources, thereby limiting their budgetary discretion to pay the Company for changes approved in scope but for which pricing is pending. During the nine months ended September 30, 2020, net cash provided by operating activities was $131.0 million, due primarily to cash generated from earnings sources, partially offset by investment in working capital. The increase in working capital for the first nine months of 2020 primarily reflected an increase in accounts receivable due to timing of collections, partially offset by an increase in accounts payable due to timing of payments to suppliers and subcontractors.

Cash flow from operating activities decreased $283.6 million when comparing the first nine months of 2021 with the same period of 2020. The decrease in cash from operating activities in the first nine months of 2021 compared to 2020 substantially reflects an increase in investment in working capital primarily as a result of a current-year decrease in accounts payable compared to an increase in the prior year due to timing of payments to vendors and subcontractors, a current-year decrease in billings in excess of costs and estimated earnings compared to an increase in the prior year, and a larger current-year increase in CIE compared to the prior year, partially offset by a current-year decrease in accounts receivable compared to an increase in the prior year.

Cash used in investing activities during the first nine months of 2021 was $31.0 million primarily due to the acquisition of property and equipment for projects totaling $27.2 million, as well as net cash used in investment transactions of $9.1 million. Cash used in investing activities during the first nine months of 2020 was $32.9 million, primarily due to the acquisition of property and equipment for projects totaling $43.4 million, partially offset by proceeds from the sale of property and equipment of $13.3 million.

Net cash used in financing activities was $73.8 million for the first nine months of 2021, which was primarily driven by a $61.9 million net repayment of borrowings, including the repayment of the remaining principal balance of the Convertible

37

Notes, and $10.3 million of net distributions to noncontrolling interests. Net cash provided by financing activities for the comparable period in 2020 was $129.1 million, which was primarily driven by increased net borrowings of $178.8 million, partially offset by $37.2 million of cash distributions to noncontrolling interests.

At September 30, 2021, we had working capital of $2.0 billion, a ratio of current assets to current liabilities of 2.04 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.

Debt

2020 Credit Agreement

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”), 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). For more information regarding the terms of our 2020 Credit Agreement, refer to Note 9 of the Notes to Condensed Consolidated Financial Statements.

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

	Trailing Four Fiscal Quarters Ended
	September 30, 2021
	Actual	Required
First lien net leverage ratio	1.09 to 1.00	≤ 2.75 : 1.00

As of September 30, 2021, we were in compliance and expect to continue to be in compliance with the covenants under the 2020 Credit Agreement.

Repurchase and Repayment of Convertible Notes

On June 15, 2016, the Company issued $200 million of 2.875% Convertible Senior Notes due June 15, 2021 (the “Convertible Notes”) in a private placement offering. On August 19, 2020, the Company used proceeds from the Term Loan B to repurchase $130.1 million aggregate principal amount of the Convertible Notes for an aggregate purchase price of $132.4 million (including accrued and unpaid interest to the repurchase date). The Company repaid the remaining principal balance of the Convertible Notes at maturity on June 15, 2021 using proceeds from the Term Loan B which were held in a restricted cash account for this purpose. None of the Convertible Notes remained outstanding as of September 30, 2021.

Contractual Obligations

Aside from the Debt discussion above, there have been no material changes in our contractual obligations from those described in our Annual Report on Form 10‑K for the year ended December 31, 2020.

Off-Balance Sheet Arrangements

None.

Critical Accounting Policies

Our significant accounting policies are described in Note 1 of the Notes to Consolidated Financial Statements included in our Annual Report on Form 10‑K for the year ended December 31, 2020. Our critical accounting policies are also identified and discussed in Item 7 of our Annual Report on Form 10‑K for the year ended December 31, 2020.

Recently Issued Accounting Pronouncements

See Note 2 of the Notes to Condensed Consolidated Financial Statements.

38

Item 3. Quantitative and Qualitative Disclosures About Market Risk

There has been no material change in our exposure to market risk from that described in Item 7A of our Annual Report on Form 10‑K for the year ended December 31, 2020.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as defined by Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (“Exchange Act”), as of the end of the period covered by this Quarterly Report on Form 10‑Q was made under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures (a) were effective to ensure that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms and (b) include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in reports filed or submitted under the Exchange Act is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting during the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. – OTHER INFORMATION

Item 1. Legal Proceedings

In the ordinary course of our business, we are involved in various legal proceedings. We disclose information about certain pending legal proceedings pursuant to SEC rules and as we otherwise determine to be appropriate. For information on such pending matters, see Part I, Item 3 of our Annual Report on Form 10‑K for the year ended December 31, 2020, updated by Note 11 of the Notes to Condensed Consolidated Financial Statements included in this Quarterly Report on Form 10‑Q.

Item 1A. Risk Factors

There have been no material changes to our risk factors as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2020 and in our subsequent Quarterly Report on Form 10-Q for the quarter ended June 30, 2021.

Item 4. Mine Safety Disclosures

Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) requires domestic mine operators to disclose violations and orders issued under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”) by the federal Mine Safety and Health Administration. We do not act as the owner of any mines but we may act as a mining operator as defined under the Mine Act where we may be an independent contractor performing services or construction of such mine.

Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Act and Item 104 of Regulation S-K is included in Exhibit 95.

39

Item 6. Exhibits

Exhibits	Description
10.1	Form of Cash-Settled Performance Stock Unit Award Agreement.
10.2	Amended and Restated Employment Agreement, effective as of June 1, 2021, by and between Tutor Perini Corporation and Ronald N. Tutor (incorporated by reference to Exhibit 10.1 to Form 8-K filed on August 30, 2021).
31.1	Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
95	Mine Safety Disclosure.
101.INS	XBRL Instance Document – The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
104	The cover page from the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, formatted in Inline XBRL (included as Exhibit 101).

40

SIGNATURE

Pursuant to the requirements 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.

	Tutor Perini Corporation
Dated: November 3, 2021	By:	/s/ Gary G. Smalley
	Gary G. Smalley
	Executive Vice President and Chief Financial Officer

41

EX-10.1

Exhibit 10.1

FORM OF CASH-SETTLED PERFORMANCE STOCK UNIT AWARD AGREEMENT

UNDER THE TUTOR PERINI

CORPORATION OMNIBUS INCENTIVE PLAN

Award Date: _______________________________

Name of Grantee: ___________________________

Target Number of Cash-Settled Performance Stock Units: __________

Performance Metric: ___________________________

THIS AGREEMENT (this “Agreement”) entered into by and between Tutor Perini Corporation (the “Company”) and the Grantee evidences the grant of the target number of Cash-Settled Performance Stock Units (“CPSUs”) specified above (the “Award”) under the Tutor Perini Corporation Omnibus Incentive Plan (as the same may be amended, the “Plan”).

1.    Incorporation of Plan. Notwithstanding anything herein to the contrary, this Agreement shall be subject to and governed by all the terms and conditions of the Plan, including the powers of the Administrator set forth in Section 2(b) of the Plan. Capitalized terms in this Agreement shall have the meaning specified in the Plan, unless a different meaning is specified herein.

2.    Acceptance of Award. The Grantee shall have no rights with respect to this Award unless he or she shall have accepted this Award by signing and delivering to the Company a copy of this Award Agreement on or before [•].

3.    Grant of Cash-Settled Performance Stock Units. Subject to the restrictions, limitations, terms and conditions specified in the Plan and in this Agreement, the Company hereby grants this Award to the Grantee as of the Award Date listed above. The target number of CPSUs granted are used to calculate the final number of CPSUs that become earned and vest hereunder, if any, and will be used solely to calculate the cash payout, if any, to the Grantee in accordance with this Agreement. The CPSUs do not create any separate rights or entitlements. A single CPSU represents the right to receive the cash value of one share of Stock, subject to the achievement of certain performance criteria as detailed in Section 4 below.

1

4.    Performance Criteria; Vesting.

(a)    The CPSUs shall vest in accordance with the following schedule, subject to the achievement of the following performance criteria during the applicable performance period. In accordance with the Plan, the Administrator shall determine and certify in writing the extent to which the performance criteria was achieved and the percentage of the target number of CPSUs that has been vested and earned. Upon the vesting of any CPSUs, such CPSUs shall become payable to the Grantee in cash, as detailed in Section 5 below.

Vesting Date	Target Units	Performance Period
[•]	[•]	[•]-[•]

[DESCRIPTION OF PERFORMANCE CRITERIA]

(b)    [Except as provided in Paragraph 4(c), the Grantee’s rights to CPSUs granted hereunder that are not vested in accordance with the provisions of this Agreement shall automatically be forfeited, without the payment of any consideration therefor, upon the Grantee’s termination of employment, voluntarily or involuntarily, with the Company and its Subsidiaries for any reason (including death).

(c)    Change in Control. Notwithstanding anything to the contrary in this Agreement, in the event of a termination of the Grantee’s employment by the Company without “Cause” (and not due to the Grantee’s death or disability) during the one-year period following a Change in Control, all outstanding CPSUs under this Agreement shall immediately vest based on target performance, and shall be settled as soon as administratively practicable thereafter.

As used herein, “Cause” means any of the following: (a) the Grantee’s material violation of Company policy that causes harm to the Company or its Subsidiaries; (b) the Grantee’s dishonesty, fraud, willful misconduct, breach of fiduciary duty, or conduct that constitutes conflict of interest; (c) the Grantee’s commission of a felony or the Grantee’s conviction (including any plea of guilty or nolo contendere) for any criminal act involving fraud, dishonesty, misappropriation or moral turpitude; (d) the Grantee’s material failure or refusal to perform his or her job duties in accordance with Company policies; or (e) other wrongful conduct by the Grantee of a similar nature and degree.

As used herein, “Change in Control” means the consummation of a transaction or series of related transactions in which either: (a) one Person (or more than one Person acting as a group) acquires beneficial ownership of stock of the Company that, together with the stock held by such Person or group, constitutes more than 50% of the total fair market value or total voting power of the stock of the Company; (b) a majority of the members of the Board are replaced during any twelve-month period by directors whose appointment or election is not endorsed by a majority of the Board before the date of appointment or election; or (c) one Person (or more than one Person acting as a group), acquires (or has acquired during the twelve-month period ending

2

on the date of the most recent acquisition) assets from the Company having a total gross fair market value equal to or more than 50% of the total gross fair market value of all the assets of the Company immediately before such acquisition. As used herein, “Person” means an individual, partnership, corporation, unincorporated organization, joint stock company, limited liability company, trust, joint venture or other legal entity, or a governmental agency or political subdivision thereof.]1

5.    Settlement. On the Vesting Date the Grantee shall become entitled to receive the total number of CPSUs determined under Section 4. Each CPSU earned, if any, will be paid in a lump sum cash payment, in aggregate, equal to the Fair Market Value of one share of the Company’s Stock as of the Vesting Date. The lump sum cash payment shall be paid to the Grantee as soon as administratively practicable after the Vesting Date, and in all events on or before [•].

6.    Tax Withholding. Upon vesting and subsequent settlement in cash, the full payout amount will be reported by the Company as employment income to the Grantee. The Company will be required to withhold tax and other amounts required by federal, state or local statute, ordinance, rule or regulation in respect of this income. Such withholding will reduce the cash payment made, in settlement of the CPSUs, to the Grantee.

7.    Rights as Stockholder. The Grantee shall have no rights as a stockholder of the Company and no voting rights with respect to the CPSUs.

8.    Non-transferability. The CPSUs granted pursuant to this Agreement may not be sold, transferred, pledged, assigned, or otherwise alienated or hypothecated and any such attempt to transfer any CPSU will not be honored.

9.    Treatment of Dividends. Any dividends or other distributions paid with respect to the Stock prior to the Vesting Date of the CPSUs shall accrue and shall be converted to additional target CPSUs based on the closing price of the Stock on any dividend distribution date, provided that such additional CPSUs shall be subject to the same vesting and performance conditions as are the CPSUs with respect to which they were paid, and shall become earned and vest and be paid to the Grantee only to the extent (and at the same time) that underlying CPSUs vest, and are settled.

10.    Miscellaneous.

(a)    By accepting this Award, the Grantee expressly acknowledges and agrees that the Company may deliver information (including, without limitation, information required to be delivered to the Grantee pursuant to applicable securities laws) to the Grantee regarding the Company and the Subsidiaries, the Plan, the CPSUs and shares of Stock via Company web site or other electronic delivery.

1 Post-termination and change in control treatment of award and applicable definitions replaced with terms of individual employment agreements or contracts, where applicable.

3

(b)    This Agreement does not confer upon the Grantee any rights with respect to continuation of employment by the Company or any Subsidiary.

(c)    In the event of any conflict between this Agreement and the Plan, the Plan shall control.

(d)    This Agreement shall be governed by, and construed in accordance with, the laws of the Commonwealth of Massachusetts, applied without regard to conflict of law principles.

TUTOR PERINI CORPORATION

By:

Name:    

Title:    

I acknowledge I received a copy of the Plan. I represent that I have read and am familiar with this Agreement and the Plan's terms. By signing below, I accept the Award subject to all of the terms and provisions of this Agreement and of the Plan, as the Plan may be amended in accordance with its terms. I hereby accept as binding, conclusive, and final all decisions or interpretations of the Administrator concerning any questions arising under the Plan with respect to the Award.

Dated:
	Grantee’s Signature
	[=]

4

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

I, Ronald N. Tutor, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Tutor Perini Corporation (the “registrant”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 3, 2021	/s/ Ronald N. Tutor
	Ronald N. Tutor
	Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

I, Gary G. Smalley, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Tutor Perini Corporation (the “registrant”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 3, 2021	/s/ Gary G. Smalley
	Gary G. Smalley
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Tutor Perini Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Ronald N. Tutor, Chairman and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 3, 2021	/s/ Ronald N. Tutor
	Ronald N. Tutor
	Chairman and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to Tutor Perini Corporation and will be retained by Tutor Perini Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Tutor Perini Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gary G. Smalley, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 3, 2021	/s/ Gary G. Smalley
	Gary G. Smalley
	Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to Tutor Perini Corporation and will be retained by Tutor Perini Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

EX-95

Exhibit 95

MINE SAFETY DISCLOSURE

Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act requires domestic mine operators to disclose violations and orders issued under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”) by the federal Mine Safety and Health Administration (“MSHA”). We do not act as the owner of any mines but we may act as a mining operator as defined under the Mine Act where we may be an independent contractor performing services or construction of such mine. Due to timing and other factors, the data below may not agree with the mine data retrieval system maintained by MSHA.

The following table provides information for the quarter ended September 30, 2021.

Mine (1)	Mine Act §104 Violations (2)	Mine Act §104(b) Orders (3)	Mine Act §104(d) Citations and Orders (4)	Mine Act §110(b)(2) Violations (5)	Mine Act §107(a) Orders (6)	Proposed Assessments from MSHA (In dollars ($))		Mining Related Fatalities	Mine Act §104(e) Notice (yes/no) (7)	Pending Legal Action before Federal Mine Safety and Health Review Commission (yes/no)
Quarter Ended September 30, 2021
Longview	1	—	—	—	—	$	271	—	No	No

(1)United States mine.

(2)The total number of violations received from MSHA under §104 of the Mine Act, which includes citations for health or safety standards that could significantly and substantially contribute to a serious injury if left unabated.

(3)The total number of orders issued by MSHA under §104(b) of the Mine Act, which represents a failure to abate a citation under §104(a) within the period of time prescribed by MSHA.

(4)The total number of citations and orders issued by MSHA under §104(d) of the Mine Act for unwarrantable failure to comply with mandatory health or safety standards.

(5)The total number of flagrant violations issued by MSHA under §110(b)(2) of the Mine Act.

(6)The total number of orders issued by MSHA under §107(a) of the Mine Act for situations in which MSHA determined an imminent danger existed.

(7)A written notice from the MSHA regarding a pattern of violations, or a potential to have such pattern under §104(e) of the Mine Act.

XML

Cover - shares	9 Months Ended
	Sep. 30, 2021	Oct. 28, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-6314
Entity Registrant Name	Tutor Perini Corporation
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	04-1717070
Entity Address, Address Line One	15901 OLDEN STREET
Entity Address, City or Town	SYLMAR
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91342-1093
City Area Code	818
Local Phone Number	362-8391
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	TPC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		51,072,432
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000077543
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021

XML

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
REVENUE	$ 1,178,222	$ 1,442,091	$ 3,605,060	$ 3,969,247
COST OF OPERATIONS	(1,064,245)	(1,317,176)	(3,253,139)	(3,615,498)
GROSS PROFIT	113,977	124,915	351,921	353,749
General and administrative expenses	(61,884)	(41,894)	(181,371)	(165,805)
INCOME FROM CONSTRUCTION OPERATIONS	52,093	83,021	170,550	187,944
Other income (expense)	(464)	(8,048)	1,142	(8,364)
Interest expense	(16,694)	(25,613)	(52,442)	(58,513)
INCOME BEFORE INCOME TAXES	34,935	49,360	119,250	121,067
Income tax expense	(8,694)	(37)	(26,293)	(14,747)
NET INCOME	26,241	49,323	92,957	106,320
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	10,847	12,504	30,364	33,421
NET INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ 15,394	$ 36,819	$ 62,593	$ 72,899
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.30	$ 0.72	$ 1.23	$ 1.44
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.30	$ 0.72	$ 1.22	$ 1.43
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	51,072	50,787	50,995	50,598
DILUTED (in shares)	51,366	51,241	51,364	51,004

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 26,241	$ 49,323	$ 92,957	$ 106,320
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Defined benefit pension plan adjustments	492	424	1,475	1,271
Foreign currency translation adjustments	(1,125)	1,102	(353)	(1,256)
Unrealized gain (loss) in fair value of investments	(448)	(225)	(1,412)	1,623
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	(1,081)	1,301	(290)	1,638
COMPREHENSIVE INCOME	25,160	50,624	92,667	107,958
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	10,400	13,024	30,493	32,775
COMPREHENSIVE INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ 14,760	$ 37,600	$ 62,174	$ 75,183

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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents ($72,473 and $105,735 related to variable interest entities (“VIEs”))	$ 187,535	$ 374,289
Restricted cash	6,922	77,563
Restricted investments	86,576	78,912
Accounts receivable ($99,841 and $86,012 related to VIEs)	1,426,709	1,415,063
Retainage receivable ($150,301 and $122,335 related to VIEs)	637,124	648,441
Costs and estimated earnings in excess of billings ($142,587 and $39,846 related to VIEs)	1,388,010	1,236,734
Other current assets ($44,851 and $51,746 related to VIEs)	204,555	249,455
Total current assets	3,937,431	4,080,457
PROPERTY AND EQUIPMENT (“P&E”), net of accumulated depreciation of $477,556 and $434,294 (net P&E of $2,413 and $12,840 related to VIEs)	440,982	489,217
GOODWILL	205,143	205,143
INTANGIBLE ASSETS, NET	96,469	123,115
OTHER ASSETS	147,725	147,685
TOTAL ASSETS	4,827,750	5,045,617
CURRENT LIABILITIES:
Current maturities of long-term debt, net of unamortized discount and debt issuance costs totaling $0 and $2,040	28,029	100,188
Accounts payable ($75,333 and $116,461 related to VIEs)	656,135	794,611
Retainage payable ($34,620 and $26,439 related to VIEs)	286,036	315,135
Billings in excess of costs and estimated earnings ($340,943 and $362,427 related to VIEs)	754,939	839,222
Accrued expenses and other current liabilities ($9,892 and $9,595 related to VIEs)	207,850	215,207
Total current liabilities	1,932,989	2,264,363
LONG-TERM DEBT, less current maturities, net of unamortized discount and debt issuance costs totaling $17,921 and $20,209	939,955	925,277
DEFERRED INCOME TAXES	83,065	82,966
OTHER LONG-TERM LIABILITIES	241,123	230,066
TOTAL LIABILITIES	3,197,132	3,502,672
COMMITMENTS AND CONTINGENCIES (NOTE 11)
Stockholders' equity:
Preferred stock - authorized 1,000,000 shares ($1 par value), none issued	0	0
Common stock - authorized 112,500,000 shares ($1 par value), issued and outstanding 51,072,432 and 50,827,205 shares	51,072	50,827
Additional paid-in capital	1,132,396	1,127,385
Retained earnings	484,978	422,385
Accumulated other comprehensive loss	(47,160)	(46,741)
Total stockholders' equity	1,621,286	1,553,856
Noncontrolling interests	9,332	(10,911)
TOTAL EQUITY	1,630,618	1,542,945
TOTAL LIABILITIES AND EQUITY	$ 4,827,750	$ 5,045,617

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Cash and cash equivalents	$ 187,535	$ 374,289
Accounts receivable	1,426,709	1,415,063
Retainage receivable	637,124	648,441
Costs and estimated earnings in excess of billings	1,388,010	1,236,734
Other current assets	204,555	249,455
Accumulated depreciation	477,556	434,294
Property and equipment, net	440,982	489,217
Unamortized discount and debt issuance costs, current	0	2,040
Accounts payable	656,135	794,611
Retainage payable	286,036	315,135
Billings in excess of costs and estimated earnings	754,939	839,222
Accrued expenses and other current liabilities	207,850	215,207
Unamortized discount and debt issuance costs, non-current	$ 17,921	$ 20,209
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares issued (in shares)	0	0
Common stock, shares authorized (in shares)	112,500,000	112,500,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares issued (in shares)	51,072,432	50,827,205
Common stock, shares outstanding (in shares)	51,072,432	50,827,205
VIEs
Cash and cash equivalents	$ 72,473	$ 105,735
Accounts receivable	99,841	86,012
Retainage receivable	150,301	122,335
Costs and estimated earnings in excess of billings	142,587	39,846
Other current assets	44,851	51,746
Property and equipment, net	2,413	12,840
Accounts payable	75,333	116,461
Retainage payable	34,620	26,439
Billings in excess of costs and estimated earnings	340,943	362,427
Accrued expenses and other current liabilities	$ 9,892	$ 9,595

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net income	$ 92,957	$ 106,320
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	65,550	55,755
Amortization of intangible assets	26,646	23,879
Share-based compensation expense	8,103	10,722
Change in debt discounts and deferred debt issuance costs	4,802	18,960
Deferred income taxes	124	22,137
(Gain) loss on sale of property and equipment	2,004	(2,609)
Changes in other components of working capital	(363,074)	(107,786)
Other long-term liabilities	11,225	3,899
Other, net	(955)	(309)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	(152,618)	130,968
Cash Flows from Investing Activities:
Acquisition of property and equipment	(27,162)	(43,396)
Proceeds from sale of property and equipment	5,236	13,320
Investments in securities	(25,541)	(22,692)
Proceeds from maturities and sales of investments in securities	16,443	19,901
NET CASH USED IN INVESTING ACTIVITIES	(31,024)	(32,867)
Cash Flows from Financing Activities:
Proceeds from debt	448,270	1,183,012
Repayment of debt	(510,146)	(1,004,259)
Cash payments related to share-based compensation	(1,627)	(1,697)
Distributions paid to noncontrolling interests	(17,250)	(37,217)
Contributions from noncontrolling interests	7,000	0
Debt issuance, extinguishment and modification costs	0	(10,701)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(73,753)	129,138
Net increase (decrease) in cash, cash equivalents and restricted cash	(257,395)	227,239
Cash, cash equivalents and restricted cash at beginning of period	451,852	202,101
Cash, cash equivalents and restricted cash at end of period	$ 194,457	$ 429,340

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Basis of Presentation

9 Months Ended

Sep. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

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, 2020. The results of operations for the three and nine months ended September 30, 2021 may not be indicative of the results that will be achieved for the full year ending December 31, 2021.

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 September 30, 2021 and its consolidated statements of income and cash flows for the interim periods presented. Intercompany balances and transactions have been eliminated. Certain amounts in the notes to the condensed consolidated financial statements of prior years have been reclassified to conform to the current year presentation.

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Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	Recent Accounting PronouncementsIn December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2019-12, Simplifying the Accounting for Income Taxes (“ASU 2019-12”), modifying Accounting Standards Codification (“ASC”) 740, Income Taxes (“ASC 740”). The amendments in ASU 2019-12, among other things, remove certain exceptions to the general principles in ASC 740 and seek more consistent application by clarifying and amending the existing guidance. The Company adopted this ASU effective January 1, 2021. The adoption of ASU 2019-12 did not have a material impact on the Company’s financial position, results of operations or cash flows.

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Revenue

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

Disaggregation of Revenue

The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depicts how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the three and nine months ended September 30, 2021 and 2020.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Civil segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	386,913	$	372,131	$	1,062,322	$	1,024,083
Bridges	67,117		104,722		179,059		246,006
Military defense facilities	46,615		44,246		140,736		102,898
Water	22,470		23,277		74,080		76,569
Highways	7,101		30,086		48,153		98,259
Other	16,002		37,534		72,795		119,786
Total Civil segment revenue	$	546,218	$	611,996	$	1,577,145	$	1,667,601

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Building segment revenue by end market:
Commercial and industrial facilities	$	75,402	$	162,364	$	307,414	$	402,312
Hospitality and gaming	89,317		119,588		276,029		346,517
Municipal and government	76,471		66,505		222,855		215,230
Education facilities	39,528		50,425		123,988		129,085
Mass transit (includes transportation projects)	38,868		50,206		99,747		174,605
Health care facilities	20,287		26,344		44,294		94,651
Other	21,068		32,708		76,507		100,525
Total Building segment revenue	$	360,941	$	508,140	$	1,150,834	$	1,462,925

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Specialty Contractors segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	135,971	$	179,875	$	465,179	$	447,180
Commercial and industrial facilities	33,897		41,378		109,283		115,382
Multi-unit residential	28,054		39,014		101,498		103,118
Water	29,161		20,413		67,829		46,341
Education facilities	13,876		12,236		45,657		39,131
Other	30,104		29,039		87,635		87,569
Total Specialty Contractors segment revenue	$	271,063	$	321,955	$	877,081	$	838,721

	Three Months Ended September 30, 2021								Three Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	478,720	$	99,540	$	110,012	$	688,272	$	526,771	$	126,448	$	155,175	$	808,394
Federal agencies	48,680		50,437		14,716		113,833		48,861		32,392		29,362		110,615
Private owners	18,818		210,964		146,335		376,117		36,364		349,300		137,418		523,082
Total revenue	$	546,218	$	360,941	$	271,063	$	1,178,222	$	611,996	$	508,140	$	321,955	$	1,442,091

	Nine Months Ended September 30, 2021								Nine Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	1,350,555	$	268,396	$	377,016	$	1,995,967	$	1,426,644	$	430,212	$	401,671	$	2,258,527
Federal agencies	149,648		150,085		41,657		341,390		128,112		99,013		50,410		277,535
Private owners	76,942		732,353		458,408		1,267,703		112,845		933,700		386,640		1,433,185
Total revenue	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247

	Three Months Ended September 30, 2021								Three Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	473,212	$	89,895	$	235,534	$	798,641	$	484,851	$	117,650	$	284,534	$	887,035
Guaranteed maximum price	502		219,395		5,420		225,317		179		308,299		1,923		310,401
Unit price	71,429		130		23,558		95,117		124,506		254		31,191		155,951
Cost plus fee and other	1,075		51,521		6,551		59,147		2,460		81,937		4,307		88,704
Total revenue	$	546,218	$	360,941	$	271,063	$	1,178,222	$	611,996	$	508,140	$	321,955	$	1,442,091

	Nine Months Ended September 30, 2021								Nine Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	1,353,436	$	269,693	$	775,292	$	2,398,421	$	1,349,750	$	401,957	$	743,241	$	2,494,948
Guaranteed maximum price	2,270		737,251		9,113		748,634		768		794,810		3,850		799,428
Unit price	212,678		(1,323)		80,558		291,913		307,654		1,417		70,784		379,855
Cost plus fee and other	8,761		145,213		12,118		166,092		9,429		264,741		20,846		295,016
Total revenue	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247

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. Revenue was negatively impacted during the three and nine month periods ended September 30, 2021 related to performance obligations satisfied (or partially satisfied) in prior periods by $2.1 million and $37.1 million, respectively. Likewise, revenue was negatively impacted during the three and nine month periods ended September 30, 2020 related to performance obligations satisfied (or partially satisfied) in prior periods by $30.4 million and $71.3 million, respectively.

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 September 30, 2021, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $4.4 billion, $1.8 billion and $1.4 billion for the Civil, Building and Specialty Contractors segments, respectively. As of September 30, 2020, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $5.1 billion, $1.9 billion and $1.9 billion for the Civil, Building and Specialty Contractors segments, respectively. The Company typically recognizes revenue on Civil segment projects over a period of three to five years, whereas for projects in the Building and Specialty Contractors segments, the Company typically recognizes revenue over a period of one to three years.

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Contract Assets and Liabilities

9 Months Ended

Sep. 30, 2021

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]

Contract Assets and Liabilities

Contract Assets and LiabilitiesThe 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 retainage 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:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Retainage receivable	$	637,124	$	648,441
Costs and estimated earnings in excess of billings:
Claims	840,176		752,783
Unapproved change orders	448,600		415,489
Other unbilled costs and profits	99,234		68,462
Total costs and estimated earnings in excess of billings	1,388,010		1,236,734
Capitalized contract costs	72,543		74,452
Total contract assets	$	2,097,677	$	1,959,627

Retainage 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. Retainage 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 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, 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 and nine months ended September 30, 2021, $11.3 million and $36.6 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts. During the three and nine months ended September 30, 2020, $12.5 million and $35.2 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts.

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

(in thousands)	As of September 30, 2021		As of December 31, 2020
Retainage payable	$	286,036	$	315,135
Billings in excess of costs and estimated earnings	754,939		839,222
Total contract liabilities	$	1,040,975	$	1,154,357

Retainage 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, retainage payable is not remitted to subcontractors until the associated retainage 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 and nine months ended September 30, 2021 and included in the opening billings in excess of costs and estimated earnings balances for each period totaled $288.0 million and $608.4 million, respectively. Revenue recognized during the three and nine months ended September 30, 2020 and included in the opening billings in excess of costs and estimated earnings balances for each period totaled $461.8 million and $662.7 million, respectively.

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Cash, Cash Equivalents and Restricted Cash

9 Months Ended

Sep. 30, 2021

Cash and Cash Equivalents [Abstract]

Cash, Cash Equivalents and Restricted Cash

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:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Cash and cash equivalents available for general corporate purposes	$	66,240	$	210,841
Joint venture cash and cash equivalents	121,295		163,448
Cash and cash equivalents	187,535		374,289
Restricted cash	6,922		77,563
Total cash, cash equivalents and restricted cash	$	194,457	$	451,852

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 primarily includes amounts held as collateral to secure insurance-related contingent obligations, such as insurance claim deductibles, in lieu of letters of credit. As of December 31, 2020, restricted cash also included $69.9 million held to repay the outstanding principal balance of Convertible Notes, as defined in Note 9, which matured and were repaid on June 15, 2021.

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Earnings Per Common Share

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings Per Common ShareBasic earnings per common share (“EPS”) and diluted EPS are calculated by dividing net income 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 and unexercised stock options. Potentially dilutive securities also included the Convertible Notes (as defined in Note 9) prior to their repayment on June 15, 2021; however, the notes had no impact on diluted EPS. The Company calculates the effect of the potentially dilutive restricted stock units and stock options using the treasury stock method.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per common share data)	2021		2020		2021		2020
Net income attributable to Tutor Perini Corporation	$	15,394	$	36,819	$	62,593	$	72,899
Weighted-average common shares outstanding, basic	51,072		50,787		50,995		50,598
Effect of dilutive restricted stock units and stock options	294		454		369		406
Weighted-average common shares outstanding, diluted	51,366		51,241		51,364		51,004
Net income attributable to Tutor Perini Corporation per common share:
Basic	$	0.30	$	0.72	$	1.23	$	1.44
Diluted	$	0.30	$	0.72	$	1.22	$	1.43
Anti-dilutive securities not included above	2,131		1,514		1,861		1,977

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Income Taxes

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company’s effective income tax rates were 24.9% and 22.0% for the three and nine months ended September 30, 2021, respectively. The effective income tax rates for both periods were higher than the 21% federal statutory rate primarily due to state income taxes and adjustments recorded when the final 2020 tax return information became available, partially offset by earnings attributable to noncontrolling interests, for which income taxes are not the responsibility of the Company.

The Company’s effective tax rates for the three and nine months ended September 30, 2020 were 0.1% and 12.2%, respectively. The effective income tax rates were lower than the 21% federal statutory rate primarily due to the favorable tax rate differential realized on the 2019 net operating loss ("NOL") carryback and earnings attributable to noncontrolling interests, for which income taxes are not the responsibility of the Company. Under the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"), enacted on March 27, 2020, the NOL generated in 2019 may be carried back up to five years, whereas under previous rules NOLs were only allowed to be carried forward. This allowed the Company to realize the benefit of the tax rate differential by carrying back the NOL to tax years when the federal statutory tax rate was 35% rather than the current rate of 21%. The majority of the NOL benefit was recorded in the third quarter of 2020 when final tax return information was received from the Company's joint venture partners. These benefits to the effective tax rates for both periods of 2020 were partially offset by state income taxes, the impact of cancelled stock options and the lower vested amounts or forfeiture of restricted stock units, for which some or all of the share-based compensation expense recognized in prior periods was not deductible for income tax purposes.

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Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Goodwill

The following table presents the changes in the carrying amount of goodwill since its inception through September 30, 2021:

(in thousands)	Civil		Building		Specialty Contractors		Total
Gross goodwill as of December 31, 2020	$	492,074	$	424,724	$	156,193	$	1,072,991
Accumulated impairment as of December 31, 2020	(286,931)		(424,724)		(156,193)		(867,848)
Goodwill as of December 31, 2020	205,143		—		—		205,143
Current year activity	—		—		—		—
Goodwill as of September 30, 2021	$	205,143	$	—	$	—	$	205,143

The Company tests the goodwill allocated to its Civil reporting unit for impairment annually on October 1, or more frequently if events or circumstances indicate it is more likely than not that the fair value of the reporting unit is less than its carrying amount. The Company performed its annual impairment test in the fourth quarter of 2020 using a weighted average of an

income and a market approach. These approaches utilize various valuation assumptions, and small changes to the assumptions could have a significant impact on the concluded fair value. Based on this assessment, the Company concluded goodwill was not impaired since the estimated fair value of the Civil reporting unit exceeded its carrying value. 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, impacts to our business as a result of the COVID-19 pandemic, 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:

	As of September 30, 2021								Weighted-Average Amortization Period
(in thousands)	Cost		Accumulated Amortization		Accumulated Impairment Charge		Carrying Value
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)	74,350		(25,620)		(23,232)		25,498		20 years
Contractor license	6,000		—		(6,000)		—		N/A
Customer relationships	39,800		(22,868)		(16,645)		287		12 years
Construction contract backlog	149,290		(129,016)		—		20,274		3 years
Total	$	387,040	$	(177,504)	$	(113,067)	$	96,469

	As of December 31, 2020								Weighted-Average Amortization Period
(in thousands)	Cost		Accumulated Amortization		Accumulated Impairment Charge		Carrying Value
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)	74,350		(23,754)		(23,232)		27,364		20 years
Contractor license	6,000		—		(6,000)		—		N/A
Customer relationships	39,800		(22,103)		(16,645)		1,052		12 years
Construction contract backlog	149,290		(105,001)		—		44,289		3 years
Total	$	387,040	$	(150,858)	$	(113,067)	$	123,115

Amortization expense for the three and nine months ended September 30, 2021 was $9.3 million and $26.6 million, respectively. Amortization expense for the three and nine months ended September 30, 2020 was $9.3 million and $23.9 million, respectively. As of September 30, 2021, amortization expense is estimated to be $9.3 million for the remainder of 2021, $14.4 million in 2022, $2.5 million per year for the years 2023 through 2026 and $12.4 million thereafter.

The Company performed its annual impairment test for non-amortizable trade names during the fourth quarter of 2020. 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.

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Financial Commitments

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Financial Commitments

Financial Commitments

Long-Term Debt

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

(in thousands)	As of September 30, 2021		As of December 31, 2020
2017 Senior Notes	$	495,994	$	495,271
Term Loan B	406,835		408,458
2020 Revolver	—		—
Convertible Notes(a)	—		67,878
Equipment financing and mortgages	54,381		47,594
Other indebtedness	10,774		6,264
Total debt	967,984		1,025,465
Less: Current maturities(a)	28,029		100,188
Long-term debt, net	$	939,955	$	925,277

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(a)The Company repaid the remaining principal balance of the Convertible Notes at maturity on June 15, 2021. As of December 31, 2020, the balance of the Convertible Notes was included in current maturities on the Condensed Consolidated Balance Sheet.

The following table reconciles the outstanding debt balances to the reported debt balances as of September 30, 2021 and December 31, 2020:

	As of September 30, 2021						As of December 31, 2020
(in thousands)	Outstanding Debt		Unamortized Discounts and Issuance Costs		Debt, as reported		Outstanding Debt		Unamortized Discounts and Issuance Costs		Debt, as reported
2017 Senior Notes	$	500,000	$	(4,006)	$	495,994	$	500,000	$	(4,729)	$	495,271
Term Loan B	420,750		(13,915)		406,835		423,938		(15,480)		408,458
Convertible Notes	—		—		—		69,918		(2,040)		67,878

The unamortized issuance costs related to the 2020 Revolver were $2.2 million and $2.6 million as of September 30, 2021 and December 31, 2020, respectively, and are included in other assets on the Condensed Consolidated Balance Sheets.

2020 Credit Agreement

On August 18, 2020, the Company entered into a new 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”), 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).

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, except that the Company must pay a 1.00% premium in respect to the Term Loan B in connection with any transactions that reduce the yield applicable to the Term Loan B within the first twelve months after August 18, 2020 (subject to certain further exceptions). 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 unpermitted indebtedness and annual excess cash flow (subject to certain exceptions).

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 2020 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) LIBOR or (b) 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 LIBOR rate for a one-month interest period plus 100 basis points) plus, (ii) an applicable margin. The margin applicable to the Term Loan B is between 4.50% and 4.75% for LIBOR and between 3.50% and 3.75% for base rate (which was initially 4.75% for LIBOR and 3.75% for base rate), and, in each case, is based on the Total Net Leverage Ratio. The margin applicable to the 2020 Revolver is between 4.25% and 4.75% for LIBOR and 3.25% and 3.75% for base rate (which was initially 4.75% for LIBOR and 3.75% for base rate), and, in each case, is based on the First Lien Net Leverage Ratio. 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 2020 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 agreement includes provisions for the replacement of LIBOR with an alternative benchmark rate in the event LIBOR is discontinued. The weighted-average annual interest rate on borrowings under the 2020 Revolver was 6.50% during the nine months ended September 30, 2021.

The 2020 Credit Agreement requires, with respect to the 2020 Revolver only, the Company and its restricted subsidiaries to maintain a maximum First Lien Net Leverage Ratio of 2.75:1:00, stepping down to 2.25:1.00 beginning the quarter ending March 31, 2022. 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 September 30, 2021, the entire $175 million was available under the 2020 Revolver and the Company had not utilized the 2020 Revolver for letters of credit. The Company was in compliance with the financial covenants under the 2020 Credit Agreement for the period ended September 30, 2021.

Termination of 2017 Credit Facility

On August 18, 2020, the Company used proceeds from the Term Loan B to repay outstanding amounts under its credit agreement (the “2017 Credit Facility”) with SunTrust Bank, now known as Truist Bank, as Administrative Agent, Swing Line Lender and L/C Issuer and a syndicate of other lenders, at which time the 2017 Credit Facility was terminated.

Repurchase and Repayment of Convertible Notes

On June 15, 2016, the Company issued $200 million of 2.875% Convertible Senior Notes due June 15, 2021 (the “Convertible Notes”) in a private placement offering. On August 19, 2020, the Company used proceeds from the Term Loan B to repurchase $130.1 million aggregate principal amount of the Convertible Notes for an aggregate purchase price of $132.4 million (including accrued and unpaid interest to the repurchase date). The Company repaid the remaining $69.9 million principal balance of the Convertible Notes at maturity on June 15, 2021 using proceeds from the Term Loan B, which were held in a restricted cash account for this purpose. None of the Convertible Notes remained outstanding as of September 30, 2021.

2017 Senior Notes

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 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.

Interest Expense

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Cash interest expense:
Interest on 2017 Senior Notes	$	8,594	$	8,594	$	25,781	$	25,781
Interest on Term Loan B	6,198		2,919		18,407		2,919
Interest on 2020 Revolver	436		26		1,109		26
Interest on 2017 Credit Facility	—		588		—		5,341
Interest on Convertible Notes	—		995		921		3,870
Other interest	532		577		1,422		1,616
Cash portion of loss on extinguishment	—		786		—		786
Total cash interest expense	15,760		14,485		47,640		40,339
Non-cash interest expense:(a)
Amortization of discount and debt issuance costs on Convertible Notes	—		2,073		2,040		7,870
Amortization of discount and debt issuance costs on Term Loan B	547		253		1,613		253
Amortization of debt issuance costs on 2020 Revolver	142		64		426		64
Amortization of debt issuance costs on 2017 Credit Facility	—		198		—		1,002
Amortization of debt issuance costs on 2017 Senior Notes	245		229		723		674
Non-cash portion of loss on extinguishment	—		8,311		—		8,311
Total non-cash interest expense	934		11,128		4,802		18,174
Total interest expense	$	16,694	$	25,613	$	52,442	$	58,513

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(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, Term Loan B and the Convertible Notes were 7.13%, 6.48% and 9.39%, respectively, for the nine months ended September 30, 2021.

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Leases

9 Months Ended

Sep. 30, 2021

Leases [Abstract]

Leases

LeasesThe 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 September 30, 2021, the Company’s operating leases have remaining lease terms ranging from less than one year to 17 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 and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Operating lease expense	$	3,660	$	3,563	$	11,085	$	10,991
Short-term lease expense(a)	17,951		24,502		57,377		64,823
	21,611		28,065		68,462		75,814
Less: Sublease income	176		193		522		851
Total lease expense	$	21,435	$	27,872	$	67,940	$	74,963

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(a)Short-term lease expense includes all leases with lease terms ranging from less than one month to one 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:

(dollars in thousands)	Balance Sheet Line Item	As of September 30, 2021			As of December 31, 2020
Assets
Right-of-use assets	Other assets	$	55,845		$	55,897
Total lease assets		$	55,845		$	55,897
Liabilities
Current lease liabilities	Accrued expenses and other current liabilities	$	8,060		$	7,661
Long-term lease liabilities	Other long-term liabilities	51,690			51,336
Total lease liabilities		$	59,750		$	58,997
Weighted-average remaining lease term		11.9 years			12.5 years
Weighted-average discount rate		9.40		%	9.22		%

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

	Nine Months Ended September 30,
(in thousands)	2021		2020
Operating cash flow information:
Cash paid for amounts included in the measurement of lease liabilities	$	(10,344)	$	(11,026)
Non-cash activity:
Right-of-use assets obtained in exchange for lease liabilities	$	6,686	$	6,251

The following table presents maturities of operating lease liabilities on an undiscounted basis as of September 30, 2021:

Year (in thousands)	Operating Leases
2021 (excluding the nine months ended September 30, 2021)	$	3,422
2022	12,474
2023	9,688
2024	7,640
2025	6,803
Thereafter	66,473
Total lease payments	106,500
Less: Imputed interest	46,750
Total	$	59,750

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

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. 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:

Five Star Electric Matter

In the third quarter of 2015, Five Star Electric Corp. (“Five Star”), a wholly owned subsidiary of the Company that was acquired in 2011, entered into a tolling agreement (which has since expired) related to an ongoing investigation being conducted by the United States Attorney’s Office for the Eastern District of New York (“USAO EDNY”). Five Star has been cooperating with the USAO EDNY since late June 2014, when it was first made aware of the investigation, and has provided information requested by the government related to its use of certain minority-owned, women-owned, small and disadvantaged business enterprises and certain of Five Star’s employee compensation, benefit and tax practices.

As of September 30, 2021, the Company has concluded that the potential for a material adverse financial impact on Five Star or the Company as a result of the investigation is remote.

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 1, 2021, STP, WSDOT and Hitachi sought discretionary review by the Washington Supreme Court of the portions of the Court of Appeals’ decision that affirmed the April and September 2018 decisions. STP also sought $532 million of damages from WSDOT related to the pipe-strike by the TBM in a related lawsuit in Thurston County (see following paragraph).

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 filed its answer to WSDOT’s complaint and filed a counterclaim against WSDOT and Hitachi, as the TBM designer, seeking damages of $667 million. On October 3, 2019, STP and Hitachi entered into a settlement agreement which released and dismissed the claims that STP and Hitachi had against each other. 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. Judgment was entered on January 10, 2020, and a notice of appeal was filed by STP on January 17, 2020.

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. The charge included a pre-tax accrual of $25.7 million (which is the Company’s 45% proportionate share of the $57.2 million in damages awarded by the jury to WSDOT). Payment of damages will only be made if the adverse verdict is upheld on appeal, as the payment is secured by a bond for the course of the appeal. Other than the possible future payment in cash of $25.7 million in damages, 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.

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

George Washington Bridge Bus Station Matter

In August 2013, Tutor Perini Building Corp. (“TPBC”) entered into a contract with the George Washington Bridge Bus Station Development Venture, LLC (the “Developer”) to renovate the George Washington Bridge Bus Station, a mixed-use facility owned by the Port Authority of New York and New Jersey (the “Port Authority”) that serves as a transit facility and retail space. The $100 million project experienced significant design errors and associated delays, resulting in damages to TPBC and its subcontractors, including WDF and Five Star, wholly owned subsidiaries of the Company. The project reached substantial completion on May 16, 2017.

On February 26, 2015, the Developer filed a demand for arbitration, subsequently amended, seeking $30 million in alleged damages and declaratory relief that TPBC’s requests for additional compensation are invalid due to lack of notice. TPBC denied the Developer’s claims and filed a counterclaim in March 2018. TPBC seeks in excess of $113 million in the arbitration, which includes unpaid contract balance claims, the return of $29 million retained by the Developer in alleged damages, as well as extra work claims, pass-through claims and delay claims.

Hearings on the merits commenced on September 24, 2018 before the arbitration panel. On June 4, 2019, the arbitration panel, as confirmed by the U.S. District Court in the Southern District of New York, issued a writ of attachment for $23 million of the $29 million discussed above. On October 7, 2019, the Developer filed for bankruptcy protection in the Southern District of New York under Chapter 11 of the Bankruptcy Code. The filing for bankruptcy stayed the pending arbitration proceedings. TPBC appeared in the bankruptcy proceedings on October 8, 2019 and filed a Proof of Claim in the amount of $113 million on December 13, 2019.

On June 5, 2020, the Developer, secured lenders and the Port Authority announced that they had reached a settlement of their disputes. As part of the settlement, the Port Authority waived the enforcement of its right to seek a “cure” pursuant to its lease agreement with the Developer which requires construction costs be paid prior to any sale of the leasehold, the sole asset in the Developer’s bankruptcy estate to be distributed in this bankruptcy. On July 14, 2020, the bankruptcy court conducted a hearing to determine (1) whether to approve the settlement agreement between the Developer, secured lenders and the Port Authority; and (2) whether TPBC can assert third-party beneficiary rights to the lease agreement and require that prior to the sale of the leasehold, any outstanding costs owed to contractors for the cost of building the project must be paid pursuant to the lease agreement’s “cure” provisions. On August 12, 2020, the bankruptcy court approved the settlement and denied TPBC’s third-party beneficiary rights under the lease agreement. On August 20, 2020, TPBC filed an appeal with the U.S. District Court for the Southern District of New York seeking to challenge the denial of its third-party beneficiary rights under the lease agreement’s “cure” provisions to avoid being subordinate to the claims of the secured lenders in the bankruptcy proceedings,

which was denied by the U.S. District Court on August 4, 2021 and is now before the Second Circuit Court of Appeals. On August 25, 2021, the bankruptcy court approved the sale of the leasehold, which was completed on August 31, 2021. On October 1, 2021, the bankruptcy court converted the case from a Chapter 11 to a Chapter 7 bankruptcy proceeding.

Separately, on July 2, 2018, TPBC filed a lawsuit against the Port Authority, as owner of the project, seeking the same $113 million in damages pursuant to the lease agreement between the Port Authority and the Developer. On August 20, 2018, the Port Authority filed a motion to dismiss all causes of action, which was denied by the court on July 1, 2019. The Port Authority appealed this decision on July 15, 2019. On February 18, 2021, the Appellate Division affirmed in part and reversed in part the trial court's denial of the Port Authority's motion to dismiss TPBC’s causes of action. On March 29, 2021, the Port Authority filed a new motion to dismiss on additional grounds. In addition, on August 11, 2021, TPBC filed a second lawsuit against the Port Authority alleging tortious interference with TPBC’s right to recover under the lease agreement’s “cure” provision in the bankruptcy proceeding.

On January 27, 2020, TPBC filed separate litigation in the U.S. District Court for the Southern District of New York in which TPBC asserted related claims against individual owners of the Developer for their wrongful conversion of project funds and against lenders that received interest payments from project funds and other amounts earmarked to pay the contractors. On June 1, 2020, the defendants filed motions to dismiss, which were granted in part and denied in part, resulting in the lender defendants being dismissed from the lawsuit and the lawsuit against the individual owners of the Developer continuing. On July 26, 2021, the lawsuit was refiled in New York state court.

As of September 30, 2021, the Company has concluded that the potential for a material adverse financial impact due to the Developer’s claims is remote. With respect to TPBC’s claims against the Developer, its owners, certain lenders and the Port Authority, management has made an estimate of the total anticipated recovery on this project, and such estimate is included in revenue recorded to date.

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Share-Based Compensation

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Share-Based Compensation

Share-Based Compensation

As of September 30, 2021, there were 1,036,709 shares of common stock available for grant under the Tutor Perini Corporation Omnibus Incentive Plan. During the nine months ended September 30, 2021 and 2020, the Company granted the following share-based instruments: (1) restricted stock units totaling 555,986 and 75,000 with weighted-average fair values per share of $16.52 and $13.93, respectively; and (2) stock options totaling 100,000 and 75,000 with weighted-average fair values per share of $15.21 and $3.94, respectively, and weighted-average per share exercise prices of $19.24 and $25.70, respectively; and (3) unrestricted stock units totaling 96,668 and 194,177 with weighted-average fair values per share of $15.62 and $8.60, respectively. The Company also granted 275,986 cash-settled performance stock units (“CPSUs”) with a weighted-average grant date fair value per share of $20.21 during the nine months ended September 30, 2021. CPSUs vest upon satisfaction of market or performance conditions and are settled in cash based on the value of the Company’s common stock on the vesting date. CPSUs are classified as liability awards and are remeasured at fair value at the end of each reporting period with the change in fair value recognized in earnings. Since no shares are issued, these awards do not dilute equity.

The fair value of restricted stock units and unrestricted stock is based on the closing price of the Company’s common stock on the New York Stock Exchange on the date of the grant and the fair value of stock options is based on the Black-Scholes model. The fair value of stock options granted during the first nine months of 2021 was determined using the Black-Scholes model based on the following weighted-average assumptions: (i) expected life of 6.5 years, (ii) expected volatility of 73.74%, (iii) risk-free rate of 1.44%, and (iv) no quarterly dividends. Certain performance-based awards contain market condition components and are valued on the date of grant using a Monte Carlo simulation model.

For certain restricted stock unit grants with guaranteed minimum payouts and CPSUs, the Company recognized liabilities totaling approximately $3.6 million and $2.4 million as of September 30, 2021 and December 31, 2020, respectively. The Company paid approximately $0.3 million to settle liability classified awards during each of the nine month periods ended September 30, 2021 and 2020.

For the three and nine months ended September 30, 2021, the Company recognized, as part of general and administrative expenses, costs for share-based payment arrangements totaling $3.1 million and $8.1 million, respectively, and $2.5 million and $10.7 million for the three and nine months ended September 30, 2020, respectively. As of September 30, 2021, the balance of unamortized share-based compensation expense was $20.6 million, which is expected to be recognized over a weighted-average period of 2.1 years.

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Employee Pension Plans

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Employee Pension Plans

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 and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Interest cost	$	582	$	758	$	1,746	$	2,273
Service cost	236		231		709		694
Expected return on plan assets	(1,015)		(1,006)		(3,045)		(3,017)
Recognized net actuarial losses	683		592		2,049		1,775
Net periodic benefit cost	$	486	$	575	$	1,459	$	1,725

The Company contributed $1.0 million and $3.2 million to its defined benefit pension plan during the nine months ended September 30, 2021 and 2020, respectively. Due to the election of certain options provided under the American Rescue Plan Act of 2021, enacted on March 11, 2021, the Company is not required to contribute additional amounts to the defined benefit pension plan for the remainder of 2021.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

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 September 30, 2021 and December 31, 2020:

	As of September 30, 2021								As of December 31, 2020
	Fair Value Hierarchy								Fair Value Hierarchy
(in thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash and cash equivalents(a)	$	187,535	$	—	$	—	$	187,535	$	374,289	$	—	$	—	$	374,289
Restricted cash(a)	6,922		—		—		6,922		77,563		—		—		77,563
Restricted investments(b)	—		86,576		—		86,576		—		78,912		—		78,912
Investments in lieu of retainage(c)	25,638		56,555		—		82,193		92,609		1,300		—		93,909
Total	$	220,095	$	143,131	$	—	$	363,226	$	544,461	$	80,212	$	—	$	624,673

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

(b)Restricted investments, as of September 30, 2021, consist of investments in corporate debt securities of $45.8 million, U.S. government agency securities of $40.0 million and corporate certificates of deposits of $0.8 million with maturities of up to five years, and are valued based on pricing models, which are determined from a compilation of primarily observable market information, broker quotes in non-active markets or similar assets and are therefore classified as Level 2 assets. As of December 31, 2020, restricted investments consisted of investments in U.S. government agency securities of $40.5 million, corporate debt securities of $37.5 million and corporate certificates of deposits of $0.9 million with

maturities of up to five years. The amortized cost of these available-for-sale securities at September 30, 2021 and December 31, 2020 was not materially different from the fair value.

(c)Investments in lieu of retainage are included in retainage receivable and as of September 30, 2021 are comprised of corporate debt securities of $55.3 million, money market funds of $25.6 million and municipal bonds of $1.3 million. 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 corporate and municipal bonds have maturity periods up to five years, and are determined from a compilation of primarily observable market information, third-party quoted market prices, broker quotes in non-active markets or similar assets; therefore, they are classified as Level 2 assets. As of December 31, 2020, investments in lieu of retainage consisted of money market funds of $92.6 million and municipal bonds of $1.3 million. The amortized cost of these available-for-sale securities at September 30, 2021 and December 31, 2020 was not materially different from the fair value.

The carrying values of receivables, payables and other amounts arising out of normal contract activities, including retainage, 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 $513.6 million and $495.0 million as of September 30, 2021 and December 31, 2020, respectively. The fair value of the Convertible Notes was $69.1 million as of December 31, 2020 and the Company repaid the remaining principal balance of the notes at maturity on June 15, 2021. The fair values of the 2017 Senior Notes and Convertible Notes were determined using Level 1 inputs, specifically current observable market prices. The fair value of the Term Loan B was $420.8 million and $425.0 million as of September 30, 2021 and December 31, 2020, respectively. The fair value of the Term Loan B was 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 September 30, 2021 and December 31, 2020.

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Variable Interest Entities (VIEs)

9 Months Ended

Sep. 30, 2021

Variable Interest Entities [Abstract]

Variable Interest Entities (VIEs)

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 September 30, 2021, the Company had unconsolidated VIE-related current assets and liabilities of $1.7 million and $1.5 million, respectively, included in the Company’s Condensed Consolidated Balance Sheet. As of December 31, 2020, the Company had unconsolidated VIE-related current assets and liabilities of $0.6 million and $0.5 million, respectively, included in the Company’s Condensed Consolidated Balance Sheet. 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 September 30, 2021.

As of September 30, 2021, the Company’s Condensed Consolidated Balance Sheet included current and noncurrent assets of $510.1 million and $3.3 million, respectively, as well as current liabilities of $460.8 million related to the operations of its consolidated VIEs. As of December 31, 2020, the Company’s Condensed Consolidated Balance Sheet included current and noncurrent assets of $405.7 million and $14.2 million, respectively, as well as current liabilities of $514.9 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.

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Changes in Equity

9 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Changes in Equity

Changes in Equity

A reconciliation of the changes in equity for the three and nine months ended September 30, 2021 and 2020 is provided below:

	Three Months Ended September 30, 2021
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - June 30, 2021	$	51,072	$	1,130,368	$	469,584	$	(46,526)	$	5,932	$	1,610,430
Net income	—		—		15,394		—		10,847		26,241
Other comprehensive loss	—		—		—		(634)		(447)		(1,081)
Share-based compensation	—		2,030		—		—		—		2,030
Issuance of common stock, net	—		(2)		—		—		—		(2)
Contributions from noncontrolling interests	—		—		—		—		3,000		3,000
Distributions to noncontrolling interests	—		—		—		—		(10,000)		(10,000)
Balance - September 30, 2021	$	51,072	$	1,132,396	$	484,978	$	(47,160)	$	9,332	$	1,630,618

	Nine Months Ended September 30, 2021
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - December 31, 2020	$	50,827	$	1,127,385	$	422,385	$	(46,741)	$	(10,911)	$	1,542,945
Net income	—		—		62,593		—		30,364		92,957
Other comprehensive income (loss)	—		—		—		(419)		129		(290)
Share-based compensation	—		6,787		—		—		—		6,787
Issuance of common stock, net	245		(1,776)		—		—		—		(1,531)
Contributions from noncontrolling interests	—		—		—		—		7,000		7,000
Distributions to noncontrolling interests	—		—		—		—		(17,250)		(17,250)
Balance - September 30, 2021	$	51,072	$	1,132,396	$	484,978	$	(47,160)	$	9,332	$	1,630,618

	Three Months Ended September 30, 2020
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - June 30, 2020	$	50,771	$	1,124,672	$	350,071	$	(40,597)	$	(20,776)	$	1,464,141
Net income	—		—		36,819		—		12,504		49,323
Other comprehensive income	—		—		—		781		520		1,301
Share-based compensation	—		2,471		—		—		—		2,471
Convertible note repayment allocated to conversion option	—		(929)		—		—		—		(929)
Issuance of common stock, net	56		(759)		—		—		—		(703)
Distributions to noncontrolling interests	—		—		—		—		(6,307)		(6,307)
Balance - September 30, 2020	$	50,827	$	1,125,455	$	386,890	$	(39,816)	$	(14,059)	$	1,509,297

	Nine Months Ended September 30, 2020
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - December 31, 2019	$	50,279	$	1,117,972	$	313,991	$	(42,100)	$	(9,617)	$	1,430,525
Net income	—		—		72,899		—		33,421		106,320
Other comprehensive income (loss)	—		—		—		2,284		(646)		1,638
Share-based compensation	—		10,163		—		—		—		10,163
Convertible note repayment allocated to conversion option	—		(929)		—		—		—		(929)
Issuance of common stock, net	548		(1,751)		—		—		—		(1,203)
Distributions to noncontrolling interests	—		—		—		—		(37,217)		(37,217)
Balance - September 30, 2020	$	50,827	$	1,125,455	$	386,890	$	(39,816)	$	(14,059)	$	1,509,297

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Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2021

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Other Comprehensive Income (Loss)

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 change in fair value 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 and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30, 2021						Three Months Ended September 30, 2020
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	683	$	(191)	$	492	$	592	$	(168)	$	424
Foreign currency translation adjustments	(1,389)		264		(1,125)		1,333		(231)		1,102
Unrealized loss in fair value of investments	(581)		133		(448)		(281)		56		(225)
Total other comprehensive income (loss)	(1,287)		206		(1,081)		1,644		(343)		1,301
Less: Other comprehensive income (loss) attributable to noncontrolling interests(a)	(447)		—		(447)		520		—		520
Total other comprehensive income (loss) attributable to Tutor Perini Corporation	$	(840)	$	206	$	(634)	$	1,124	$	(343)	$	781

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(a)The only component of other comprehensive income (loss) attributable to noncontrolling interests is foreign currency translation.

	Nine Months Ended September 30, 2021						Nine Months Ended September 30, 2020
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	2,049	$	(574)	$	1,475	$	1,775	$	(504)	$	1,271
Foreign currency translation adjustments	(541)		188		(353)		(1,621)		365		(1,256)
Unrealized gain (loss) in fair value of investments	(1,828)		416		(1,412)		2,078		(455)		1,623
Total other comprehensive income (loss)	(320)		30		(290)		2,232		(594)		1,638
Less: Other comprehensive income (loss) attributable to noncontrolling interests(a)	129		—		129		(646)		—		(646)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation	$	(449)	$	30	$	(419)	$	2,878	$	(594)	$	2,284

____________________________________________________________________________________________________

(a)The only component of other comprehensive income (loss) attributable to noncontrolling interests is foreign currency translation.

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and nine months ended September 30, 2021 were as follows:

	Three Months Ended September 30, 2021
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2021	$	(43,104)	$	(5,126)	$	1,704	$	(46,526)
Other comprehensive loss before reclassifications	—		(678)		(391)		(1,069)
Amounts reclassified from AOCI	492		—		(57)		435
Total other comprehensive income (loss)	492		(678)		(448)		(634)
Balance as of September 30, 2021	$	(42,612)	$	(5,804)	$	1,256	$	(47,160)

	Nine Months Ended September 30, 2021
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2020	$	(44,087)	$	(5,322)	$	2,668	$	(46,741)
Other comprehensive loss before reclassifications	—		(482)		(1,218)		(1,700)
Amounts reclassified from AOCI	1,475		—		(194)		1,281
Total other comprehensive income (loss)	1,475		(482)		(1,412)		(419)
Balance as of September 30, 2021	$	(42,612)	$	(5,804)	$	1,256	$	(47,160)

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and nine months ended September 30, 2020 were as follows:

	Three Months Ended September 30, 2020
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2020	$	(36,979)	$	(6,563)	$	2,945	$	(40,597)
Other comprehensive income (loss) before reclassifications	—		582		(3)		579
Amounts reclassified from AOCI	424		—		(222)		202
Total other comprehensive income (loss)	424		582		(225)		781
Balance as of September 30, 2020	$	(36,555)	$	(5,981)	$	2,720	$	(39,816)

	Nine Months Ended September 30, 2020
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2019	$	(37,826)	$	(5,371)	$	1,097	$	(42,100)
Other comprehensive income (loss) before reclassifications	—		(610)		1,878		1,268
Amounts reclassified from AOCI	1,271		—		(255)		1,016
Total other comprehensive income (loss)	1,271		(610)		1,623		2,284
Balance as of September 30, 2020	$	(36,555)	$	(5,981)	$	2,720	$	(39,816)

The significant items reclassified out of AOCI and the corresponding location and impact on the Consolidated Statements of Income during the three and nine months ended September 30, 2021 and 2020 were as follows:

	Location in Consolidated	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	Statements of Income	2021		2020		2021		2020
Component of AOCI:
Defined benefit pension plan adjustments	Other income (expense)	$	683	$	592	$	2,049	$	1,775
Income tax benefit	Income tax expense	(191)		(168)		(574)		(504)
Net of tax		$	492	$	424	$	1,475	$	1,271
Unrealized gain in fair value of investment adjustments	Other income (expense)	$	(73)	$	(281)	$	(246)	$	(323)
Income tax expense	Income tax expense	16		59		52		68
Net of tax		$	(57)	$	(222)	$	(194)	$	(255)

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Business Segments

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Business Segments

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 defense 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 facilities, biotech, pharmaceutical, industrial and technology.

The Specialty Contractors segment specializes in electrical, mechanical, plumbing, HVAC, fire protection systems and pneumatically placed concrete 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 and nine months ended September 30, 2021 and 2020:

	Reportable Segments
(in thousands)	Civil		Building		Specialty Contractors		Total			Corporate			Consolidated Total
Three Months Ended September 30, 2021
Total revenue	$	624,549	$	395,013	$	271,316	$	1,290,878		$	—		$	1,290,878
Elimination of intersegment revenue	(78,331)		(34,072)		(253)		(112,656)			—			(112,656)
Revenue from external customers	$	546,218	$	360,941	$	271,063	$	1,178,222		$	—		$	1,178,222
Income (loss) from construction operations	$	62,555	$	10,786	$	(5,470)	$	67,871		$	(15,778)	(a)	$	52,093
Capital expenditures	$	7,847	$	87	$	134	$	8,068		$	234		$	8,302
Depreciation and amortization(b)	$	26,234	$	416	$	777	$	27,427		$	2,634		$	30,061
Three Months Ended September 30, 2020
Total revenue	$	723,324	$	552,823	$	322,091	$	1,598,238		$	—		$	1,598,238
Elimination of intersegment revenue	(111,328)		(44,683)		(136)		(156,147)			—			(156,147)
Revenue from external customers	$	611,996	$	508,140	$	321,955	$	1,442,091		$	—		$	1,442,091
Income (loss) from construction operations	$	70,237	$	15,815	$	9,700	$	95,752	(c)	$	(12,731)	(a)	$	83,021
Capital expenditures	$	10,996	$	438	$	224	$	11,658		$	352		$	12,010
Depreciation and amortization(b)	$	26,659	$	419	$	1,002	$	28,080		$	2,778		$	30,858

____________________________________________________________________________________________________

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

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

(c)During the three months ended September 30, 2020, income (loss) from construction operations was positively impacted by $19.6 million (a favorable after-tax impact of $14.1 million, or $0.28 per diluted share) as a result of a favorable arbitration decision related to a dispute in the Specialty Contractors segment. This favorable impact was largely offset by an adverse impact of $15.2 million (an unfavorable after-tax impact of $10.9 million, or $0.21 per diluted share) due to an unfavorable legal ruling pertaining to a mechanical project in California in the Specialty Contractors segment.

	Reportable Segments
(in thousands)	Civil		Building		Specialty Contractors		Total			Corporate			Consolidated Total
Nine Months Ended September 30, 2021
Total revenue	$	1,850,748	$	1,267,984	$	877,634	$	3,996,366		$	—		$	3,996,366
Elimination of intersegment revenue	(273,603)		(117,150)		(553)		(391,306)			—			(391,306)
Revenue from external customers	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060		$	—		$	3,605,060
Income (loss) from construction operations	$	187,733	$	19,514	$	5,814	$	213,061	(a)	$	(42,511)	(b)	$	170,550
Capital expenditures	$	26,027	$	211	$	298	$	26,536		$	626		$	27,162
Depreciation and amortization(c)	$	80,125	$	1,272	$	2,628	$	84,025		$	8,171		$	92,196
Nine Months Ended September 30, 2020
Total revenue	$	1,948,095	$	1,548,223	$	839,040	$	4,335,358		$	—		$	4,335,358
Elimination of intersegment revenue	(280,494)		(85,298)		(319)		(366,111)			—			(366,111)
Revenue from external customers	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247		$	—		$	3,969,247
Income (loss) from construction operations	$	181,756	$	37,120	$	6,591	$	225,467	(d)	$	(37,523)	(b)	$	187,944
Capital expenditures	$	41,139	$	636	$	952	$	42,727		$	669		$	43,396
Depreciation and amortization(c)	$	67,050	$	1,274	$	2,990	$	71,314		$	8,320		$	79,634

____________________________________________________________________________________________________

(a)During the nine months ended September 30, 2021, the Company recorded a reduction of $20.1 million in cost of operations (an after-tax impact of $14.6 million, or $0.28 per diluted share) due to a favorable legal judgment on a completed electrical project in New York in the Specialty Contractors segment. The judgment awarded the Company the recovery of certain costs previously incurred. The Company also recognized $18.1 million of additional revenue (an after-tax impact of $13.0 million, or $0.25 per diluted share) as a result of favorable adjustments on a Civil segment mass-transit project reflecting improved profitability due to the mitigation of certain risks as the project progresses toward completion. The Company’s income from construction operations was also negatively impacted by $14.5 million (an after-tax impact of $10.5 million, or $0.21 per diluted share) due to changes in estimates on an electrical project in New York in the Specialty Contractors segment that included unfavorable adjustments and the negative impact to the period associated with increases to project forecasts due to growth in unapproved change orders (expected to be negotiated in future periods).

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

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

(d)During the nine months ended September 30, 2020, income (loss) from construction operations was adversely impacted by $15.2 million (an unfavorable after-tax impact of $10.9 million, or $0.21 per diluted share) in the third quarter of 2020 due to an unfavorable legal ruling pertaining to a mechanical project in California in the Specialty Contractors segment, as well as by $13.2 million (an unfavorable after-tax impact of $9.5 million, or $0.19 per diluted share) in the second quarter of 2020 due to an adverse arbitration ruling pertaining to an electrical project in New York in the Specialty Contractors segment. These adverse impacts were mostly offset by $19.6 million (a favorable after-tax impact of $14.1 million, or $0.28 per diluted share) in the third quarter of 2020 as a result of a favorable arbitration decision related to a dispute in the Specialty Contractors segment.

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Income from construction operations	$	52,093	$	83,021	$	170,550	$	187,944
Other income (expense)	(464)		(8,048)		1,142		(8,364)
Interest expense	(16,694)		(25,613)		(52,442)		(58,513)
Income before income taxes	$	34,935	$	49,360	$	119,250	$	121,067

Total assets by segment were as follows:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Civil	$	3,255,994	$	3,141,991
Building	1,054,260		1,147,649
Specialty Contractors	654,946		673,891
Corporate and other(a)	(137,450)		82,086
Total assets	$	4,827,750	$	5,045,617

____________________________________________________________________________________________________

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

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Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2019-12, Simplifying the Accounting for Income Taxes (“ASU 2019-12”), modifying Accounting Standards Codification (“ASC”) 740, Income Taxes (“ASC 740”). The amendments in ASU 2019-12, among other things, remove certain exceptions to the general principles in ASC 740 and seek more consistent application by clarifying and amending the existing guidance. The Company adopted this ASU effective January 1, 2021. The adoption of ASU 2019-12 did not have a material impact on the Company’s financial position, results of operations or cash flows.

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Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depicts how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the three and nine months ended September 30, 2021 and 2020.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Civil segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	386,913	$	372,131	$	1,062,322	$	1,024,083
Bridges	67,117		104,722		179,059		246,006
Military defense facilities	46,615		44,246		140,736		102,898
Water	22,470		23,277		74,080		76,569
Highways	7,101		30,086		48,153		98,259
Other	16,002		37,534		72,795		119,786
Total Civil segment revenue	$	546,218	$	611,996	$	1,577,145	$	1,667,601

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Building segment revenue by end market:
Commercial and industrial facilities	$	75,402	$	162,364	$	307,414	$	402,312
Hospitality and gaming	89,317		119,588		276,029		346,517
Municipal and government	76,471		66,505		222,855		215,230
Education facilities	39,528		50,425		123,988		129,085
Mass transit (includes transportation projects)	38,868		50,206		99,747		174,605
Health care facilities	20,287		26,344		44,294		94,651
Other	21,068		32,708		76,507		100,525
Total Building segment revenue	$	360,941	$	508,140	$	1,150,834	$	1,462,925

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Specialty Contractors segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	135,971	$	179,875	$	465,179	$	447,180
Commercial and industrial facilities	33,897		41,378		109,283		115,382
Multi-unit residential	28,054		39,014		101,498		103,118
Water	29,161		20,413		67,829		46,341
Education facilities	13,876		12,236		45,657		39,131
Other	30,104		29,039		87,635		87,569
Total Specialty Contractors segment revenue	$	271,063	$	321,955	$	877,081	$	838,721

	Three Months Ended September 30, 2021								Three Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	478,720	$	99,540	$	110,012	$	688,272	$	526,771	$	126,448	$	155,175	$	808,394
Federal agencies	48,680		50,437		14,716		113,833		48,861		32,392		29,362		110,615
Private owners	18,818		210,964		146,335		376,117		36,364		349,300		137,418		523,082
Total revenue	$	546,218	$	360,941	$	271,063	$	1,178,222	$	611,996	$	508,140	$	321,955	$	1,442,091

	Nine Months Ended September 30, 2021								Nine Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	1,350,555	$	268,396	$	377,016	$	1,995,967	$	1,426,644	$	430,212	$	401,671	$	2,258,527
Federal agencies	149,648		150,085		41,657		341,390		128,112		99,013		50,410		277,535
Private owners	76,942		732,353		458,408		1,267,703		112,845		933,700		386,640		1,433,185
Total revenue	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247

	Three Months Ended September 30, 2021								Three Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	473,212	$	89,895	$	235,534	$	798,641	$	484,851	$	117,650	$	284,534	$	887,035
Guaranteed maximum price	502		219,395		5,420		225,317		179		308,299		1,923		310,401
Unit price	71,429		130		23,558		95,117		124,506		254		31,191		155,951
Cost plus fee and other	1,075		51,521		6,551		59,147		2,460		81,937		4,307		88,704
Total revenue	$	546,218	$	360,941	$	271,063	$	1,178,222	$	611,996	$	508,140	$	321,955	$	1,442,091

	Nine Months Ended September 30, 2021								Nine Months Ended September 30, 2020
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	1,353,436	$	269,693	$	775,292	$	2,398,421	$	1,349,750	$	401,957	$	743,241	$	2,494,948
Guaranteed maximum price	2,270		737,251		9,113		748,634		768		794,810		3,850		799,428
Unit price	212,678		(1,323)		80,558		291,913		307,654		1,417		70,784		379,855
Cost plus fee and other	8,761		145,213		12,118		166,092		9,429		264,741		20,846		295,016
Total revenue	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247

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Contract Assets and Liabilities (Tables)

9 Months Ended

Sep. 30, 2021

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]

Schedule of Contract Assets and Liabilities

Contract assets include amounts due under retainage 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:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Retainage receivable	$	637,124	$	648,441
Costs and estimated earnings in excess of billings:
Claims	840,176		752,783
Unapproved change orders	448,600		415,489
Other unbilled costs and profits	99,234		68,462
Total costs and estimated earnings in excess of billings	1,388,010		1,236,734
Capitalized contract costs	72,543		74,452
Total contract assets	$	2,097,677	$	1,959,627

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

(in thousands)	As of September 30, 2021		As of December 31, 2020
Retainage payable	$	286,036	$	315,135
Billings in excess of costs and estimated earnings	754,939		839,222
Total contract liabilities	$	1,040,975	$	1,154,357

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Cash, Cash Equivalents and Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2021

Cash and Cash Equivalents [Abstract]

Reconciliation of 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:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Cash and cash equivalents available for general corporate purposes	$	66,240	$	210,841
Joint venture cash and cash equivalents	121,295		163,448
Cash and cash equivalents	187,535		374,289
Restricted cash	6,922		77,563
Total cash, cash equivalents and restricted cash	$	194,457	$	451,852

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Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Calculations of Basic and Diluted EPS

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per common share data)	2021		2020		2021		2020
Net income attributable to Tutor Perini Corporation	$	15,394	$	36,819	$	62,593	$	72,899
Weighted-average common shares outstanding, basic	51,072		50,787		50,995		50,598
Effect of dilutive restricted stock units and stock options	294		454		369		406
Weighted-average common shares outstanding, diluted	51,366		51,241		51,364		51,004
Net income attributable to Tutor Perini Corporation per common share:
Basic	$	0.30	$	0.72	$	1.23	$	1.44
Diluted	$	0.30	$	0.72	$	1.22	$	1.43
Anti-dilutive securities not included above	2,131		1,514		1,861		1,977

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Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The following table presents the changes in the carrying amount of goodwill since its inception through September 30, 2021:

(in thousands)	Civil		Building		Specialty Contractors		Total
Gross goodwill as of December 31, 2020	$	492,074	$	424,724	$	156,193	$	1,072,991
Accumulated impairment as of December 31, 2020	(286,931)		(424,724)		(156,193)		(867,848)
Goodwill as of December 31, 2020	205,143		—		—		205,143
Current year activity	—		—		—		—
Goodwill as of September 30, 2021	$	205,143	$	—	$	—	$	205,143

Intangible Assets

Intangible assets consist of the following:

	As of September 30, 2021								Weighted-Average Amortization Period
(in thousands)	Cost		Accumulated Amortization		Accumulated Impairment Charge		Carrying Value
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)	74,350		(25,620)		(23,232)		25,498		20 years
Contractor license	6,000		—		(6,000)		—		N/A
Customer relationships	39,800		(22,868)		(16,645)		287		12 years
Construction contract backlog	149,290		(129,016)		—		20,274		3 years
Total	$	387,040	$	(177,504)	$	(113,067)	$	96,469

	As of December 31, 2020								Weighted-Average Amortization Period
(in thousands)	Cost		Accumulated Amortization		Accumulated Impairment Charge		Carrying Value
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)	74,350		(23,754)		(23,232)		27,364		20 years
Contractor license	6,000		—		(6,000)		—		N/A
Customer relationships	39,800		(22,103)		(16,645)		1,052		12 years
Construction contract backlog	149,290		(105,001)		—		44,289		3 years
Total	$	387,040	$	(150,858)	$	(113,067)	$	123,115

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Financial Commitments (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Long-Term Debt

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

(in thousands)	As of September 30, 2021		As of December 31, 2020
2017 Senior Notes	$	495,994	$	495,271
Term Loan B	406,835		408,458
2020 Revolver	—		—
Convertible Notes(a)	—		67,878
Equipment financing and mortgages	54,381		47,594
Other indebtedness	10,774		6,264
Total debt	967,984		1,025,465
Less: Current maturities(a)	28,029		100,188
Long-term debt, net	$	939,955	$	925,277

____________________________________________________________________________________________________

(a)The Company repaid the remaining principal balance of the Convertible Notes at maturity on June 15, 2021. As of December 31, 2020, the balance of the Convertible Notes was included in current maturities on the Condensed Consolidated Balance Sheet.

Reconciliation of Outstanding Debt Balance to Reported Debt Balance

The following table reconciles the outstanding debt balances to the reported debt balances as of September 30, 2021 and December 31, 2020:

	As of September 30, 2021						As of December 31, 2020
(in thousands)	Outstanding Debt		Unamortized Discounts and Issuance Costs		Debt, as reported		Outstanding Debt		Unamortized Discounts and Issuance Costs		Debt, as reported
2017 Senior Notes	$	500,000	$	(4,006)	$	495,994	$	500,000	$	(4,729)	$	495,271
Term Loan B	420,750		(13,915)		406,835		423,938		(15,480)		408,458
Convertible Notes	—		—		—		69,918		(2,040)		67,878

Summary of Interest Expense as Reported in the Consolidated Statements of Operations

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Cash interest expense:
Interest on 2017 Senior Notes	$	8,594	$	8,594	$	25,781	$	25,781
Interest on Term Loan B	6,198		2,919		18,407		2,919
Interest on 2020 Revolver	436		26		1,109		26
Interest on 2017 Credit Facility	—		588		—		5,341
Interest on Convertible Notes	—		995		921		3,870
Other interest	532		577		1,422		1,616
Cash portion of loss on extinguishment	—		786		—		786
Total cash interest expense	15,760		14,485		47,640		40,339
Non-cash interest expense:(a)
Amortization of discount and debt issuance costs on Convertible Notes	—		2,073		2,040		7,870
Amortization of discount and debt issuance costs on Term Loan B	547		253		1,613		253
Amortization of debt issuance costs on 2020 Revolver	142		64		426		64
Amortization of debt issuance costs on 2017 Credit Facility	—		198		—		1,002
Amortization of debt issuance costs on 2017 Senior Notes	245		229		723		674
Non-cash portion of loss on extinguishment	—		8,311		—		8,311
Total non-cash interest expense	934		11,128		4,802		18,174
Total interest expense	$	16,694	$	25,613	$	52,442	$	58,513

____________________________________________________________________________________________________

(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, Term Loan B and the Convertible Notes were 7.13%, 6.48% and 9.39%, respectively, for the nine months ended September 30, 2021.

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Leases (Tables)

9 Months Ended

Sep. 30, 2021

Leases [Abstract]

Components of Lease Expense

The following table presents components of lease expense for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Operating lease expense	$	3,660	$	3,563	$	11,085	$	10,991
Short-term lease expense(a)	17,951		24,502		57,377		64,823
	21,611		28,065		68,462		75,814
Less: Sublease income	176		193		522		851
Total lease expense	$	21,435	$	27,872	$	67,940	$	74,963

____________________________________________________________________________________________________

(a)Short-term lease expense includes all leases with lease terms ranging from less than one month to one year. Short-term leases include, among other things, construction equipment rented on an as-needed basis as well as temporary housing.

Supplemental Financial Statement Information Related to Leases

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

(dollars in thousands)	Balance Sheet Line Item	As of September 30, 2021			As of December 31, 2020
Assets
Right-of-use assets	Other assets	$	55,845		$	55,897
Total lease assets		$	55,845		$	55,897
Liabilities
Current lease liabilities	Accrued expenses and other current liabilities	$	8,060		$	7,661
Long-term lease liabilities	Other long-term liabilities	51,690			51,336
Total lease liabilities		$	59,750		$	58,997
Weighted-average remaining lease term		11.9 years			12.5 years
Weighted-average discount rate		9.40		%	9.22		%

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

	Nine Months Ended September 30,
(in thousands)	2021		2020
Operating cash flow information:
Cash paid for amounts included in the measurement of lease liabilities	$	(10,344)	$	(11,026)
Non-cash activity:
Right-of-use assets obtained in exchange for lease liabilities	$	6,686	$	6,251

Maturity of Operating Lease Liabilities on an Undiscounted Basis

The following table presents maturities of operating lease liabilities on an undiscounted basis as of September 30, 2021:

Year (in thousands)	Operating Leases
2021 (excluding the nine months ended September 30, 2021)	$	3,422
2022	12,474
2023	9,688
2024	7,640
2025	6,803
Thereafter	66,473
Total lease payments	106,500
Less: Imputed interest	46,750
Total	$	59,750

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Employee Pension Plans (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Summary of Net Periodic Benefit Cost

The following table sets forth a summary of the net periodic benefit cost for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Interest cost	$	582	$	758	$	1,746	$	2,273
Service cost	236		231		709		694
Expected return on plan assets	(1,015)		(1,006)		(3,045)		(3,017)
Recognized net actuarial losses	683		592		2,049		1,775
Net periodic benefit cost	$	486	$	575	$	1,459	$	1,725

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following fair value hierarchy table presents the Company’s assets that are measured at fair value on a recurring basis as of September 30, 2021 and December 31, 2020:

	As of September 30, 2021								As of December 31, 2020
	Fair Value Hierarchy								Fair Value Hierarchy
(in thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash and cash equivalents(a)	$	187,535	$	—	$	—	$	187,535	$	374,289	$	—	$	—	$	374,289
Restricted cash(a)	6,922		—		—		6,922		77,563		—		—		77,563
Restricted investments(b)	—		86,576		—		86,576		—		78,912		—		78,912
Investments in lieu of retainage(c)	25,638		56,555		—		82,193		92,609		1,300		—		93,909
Total	$	220,095	$	143,131	$	—	$	363,226	$	544,461	$	80,212	$	—	$	624,673

____________________________________________________________________________________________________

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

(b)Restricted investments, as of September 30, 2021, consist of investments in corporate debt securities of $45.8 million, U.S. government agency securities of $40.0 million and corporate certificates of deposits of $0.8 million with maturities of up to five years, and are valued based on pricing models, which are determined from a compilation of primarily observable market information, broker quotes in non-active markets or similar assets and are therefore classified as Level 2 assets. As of December 31, 2020, restricted investments consisted of investments in U.S. government agency securities of $40.5 million, corporate debt securities of $37.5 million and corporate certificates of deposits of $0.9 million with

maturities of up to five years. The amortized cost of these available-for-sale securities at September 30, 2021 and December 31, 2020 was not materially different from the fair value.

(c)Investments in lieu of retainage are included in retainage receivable and as of September 30, 2021 are comprised of corporate debt securities of $55.3 million, money market funds of $25.6 million and municipal bonds of $1.3 million. 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 corporate and municipal bonds have maturity periods up to five years, and are determined from a compilation of primarily observable market information, third-party quoted market prices, broker quotes in non-active markets or similar assets; therefore, they are classified as Level 2 assets. As of December 31, 2020, investments in lieu of retainage consisted of money market funds of $92.6 million and municipal bonds of $1.3 million. The amortized cost of these available-for-sale securities at September 30, 2021 and December 31, 2020 was not materially different from the fair value.

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Changes in Equity (Tables)

9 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Schedule of Stockholders Equity

A reconciliation of the changes in equity for the three and nine months ended September 30, 2021 and 2020 is provided below:

	Three Months Ended September 30, 2021
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - June 30, 2021	$	51,072	$	1,130,368	$	469,584	$	(46,526)	$	5,932	$	1,610,430
Net income	—		—		15,394		—		10,847		26,241
Other comprehensive loss	—		—		—		(634)		(447)		(1,081)
Share-based compensation	—		2,030		—		—		—		2,030
Issuance of common stock, net	—		(2)		—		—		—		(2)
Contributions from noncontrolling interests	—		—		—		—		3,000		3,000
Distributions to noncontrolling interests	—		—		—		—		(10,000)		(10,000)
Balance - September 30, 2021	$	51,072	$	1,132,396	$	484,978	$	(47,160)	$	9,332	$	1,630,618

	Nine Months Ended September 30, 2021
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - December 31, 2020	$	50,827	$	1,127,385	$	422,385	$	(46,741)	$	(10,911)	$	1,542,945
Net income	—		—		62,593		—		30,364		92,957
Other comprehensive income (loss)	—		—		—		(419)		129		(290)
Share-based compensation	—		6,787		—		—		—		6,787
Issuance of common stock, net	245		(1,776)		—		—		—		(1,531)
Contributions from noncontrolling interests	—		—		—		—		7,000		7,000
Distributions to noncontrolling interests	—		—		—		—		(17,250)		(17,250)
Balance - September 30, 2021	$	51,072	$	1,132,396	$	484,978	$	(47,160)	$	9,332	$	1,630,618

	Three Months Ended September 30, 2020
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - June 30, 2020	$	50,771	$	1,124,672	$	350,071	$	(40,597)	$	(20,776)	$	1,464,141
Net income	—		—		36,819		—		12,504		49,323
Other comprehensive income	—		—		—		781		520		1,301
Share-based compensation	—		2,471		—		—		—		2,471
Convertible note repayment allocated to conversion option	—		(929)		—		—		—		(929)
Issuance of common stock, net	56		(759)		—		—		—		(703)
Distributions to noncontrolling interests	—		—		—		—		(6,307)		(6,307)
Balance - September 30, 2020	$	50,827	$	1,125,455	$	386,890	$	(39,816)	$	(14,059)	$	1,509,297

	Nine Months Ended September 30, 2020
(in thousands)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests		Total Equity
Balance - December 31, 2019	$	50,279	$	1,117,972	$	313,991	$	(42,100)	$	(9,617)	$	1,430,525
Net income	—		—		72,899		—		33,421		106,320
Other comprehensive income (loss)	—		—		—		2,284		(646)		1,638
Share-based compensation	—		10,163		—		—		—		10,163
Convertible note repayment allocated to conversion option	—		(929)		—		—		—		(929)
Issuance of common stock, net	548		(1,751)		—		—		—		(1,203)
Distributions to noncontrolling interests	—		—		—		—		(37,217)		(37,217)
Balance - September 30, 2020	$	50,827	$	1,125,455	$	386,890	$	(39,816)	$	(14,059)	$	1,509,297

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Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2021

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Components of Other Comprehensive Income (Loss) and Related Tax Effects

The components of other comprehensive income (loss) and the related tax effects for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30, 2021						Three Months Ended September 30, 2020
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	683	$	(191)	$	492	$	592	$	(168)	$	424
Foreign currency translation adjustments	(1,389)		264		(1,125)		1,333		(231)		1,102
Unrealized loss in fair value of investments	(581)		133		(448)		(281)		56		(225)
Total other comprehensive income (loss)	(1,287)		206		(1,081)		1,644		(343)		1,301
Less: Other comprehensive income (loss) attributable to noncontrolling interests(a)	(447)		—		(447)		520		—		520
Total other comprehensive income (loss) attributable to Tutor Perini Corporation	$	(840)	$	206	$	(634)	$	1,124	$	(343)	$	781

____________________________________________________________________________________________________

(a)The only component of other comprehensive income (loss) attributable to noncontrolling interests is foreign currency translation.

	Nine Months Ended September 30, 2021						Nine Months Ended September 30, 2020
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	2,049	$	(574)	$	1,475	$	1,775	$	(504)	$	1,271
Foreign currency translation adjustments	(541)		188		(353)		(1,621)		365		(1,256)
Unrealized gain (loss) in fair value of investments	(1,828)		416		(1,412)		2,078		(455)		1,623
Total other comprehensive income (loss)	(320)		30		(290)		2,232		(594)		1,638
Less: Other comprehensive income (loss) attributable to noncontrolling interests(a)	129		—		129		(646)		—		(646)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation	$	(449)	$	30	$	(419)	$	2,878	$	(594)	$	2,284

____________________________________________________________________________________________________

(a)The only component of other comprehensive income (loss) attributable to noncontrolling interests is foreign currency translation.

Schedule of Changes in AOCI Balances by Component (After-Tax)

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and nine months ended September 30, 2021 were as follows:

	Three Months Ended September 30, 2021
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2021	$	(43,104)	$	(5,126)	$	1,704	$	(46,526)
Other comprehensive loss before reclassifications	—		(678)		(391)		(1,069)
Amounts reclassified from AOCI	492		—		(57)		435
Total other comprehensive income (loss)	492		(678)		(448)		(634)
Balance as of September 30, 2021	$	(42,612)	$	(5,804)	$	1,256	$	(47,160)

	Nine Months Ended September 30, 2021
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2020	$	(44,087)	$	(5,322)	$	2,668	$	(46,741)
Other comprehensive loss before reclassifications	—		(482)		(1,218)		(1,700)
Amounts reclassified from AOCI	1,475		—		(194)		1,281
Total other comprehensive income (loss)	1,475		(482)		(1,412)		(419)
Balance as of September 30, 2021	$	(42,612)	$	(5,804)	$	1,256	$	(47,160)

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and nine months ended September 30, 2020 were as follows:

	Three Months Ended September 30, 2020
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2020	$	(36,979)	$	(6,563)	$	2,945	$	(40,597)
Other comprehensive income (loss) before reclassifications	—		582		(3)		579
Amounts reclassified from AOCI	424		—		(222)		202
Total other comprehensive income (loss)	424		582		(225)		781
Balance as of September 30, 2020	$	(36,555)	$	(5,981)	$	2,720	$	(39,816)

	Nine Months Ended September 30, 2020
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2019	$	(37,826)	$	(5,371)	$	1,097	$	(42,100)
Other comprehensive income (loss) before reclassifications	—		(610)		1,878		1,268
Amounts reclassified from AOCI	1,271		—		(255)		1,016
Total other comprehensive income (loss)	1,271		(610)		1,623		2,284
Balance as of September 30, 2020	$	(36,555)	$	(5,981)	$	2,720	$	(39,816)

The significant items reclassified out of AOCI and the corresponding location and impact on the Consolidated Statements of Income during the three and nine months ended September 30, 2021 and 2020 were as follows:

	Location in Consolidated	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	Statements of Income	2021		2020		2021		2020
Component of AOCI:
Defined benefit pension plan adjustments	Other income (expense)	$	683	$	592	$	2,049	$	1,775
Income tax benefit	Income tax expense	(191)		(168)		(574)		(504)
Net of tax		$	492	$	424	$	1,475	$	1,271
Unrealized gain in fair value of investment adjustments	Other income (expense)	$	(73)	$	(281)	$	(246)	$	(323)
Income tax expense	Income tax expense	16		59		52		68
Net of tax		$	(57)	$	(222)	$	(194)	$	(255)

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Business Segments (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Reportable Segments

The following tables set forth certain reportable segment information relating to the Company’s operations for the three and nine months ended September 30, 2021 and 2020:

	Reportable Segments
(in thousands)	Civil		Building		Specialty Contractors		Total			Corporate			Consolidated Total
Three Months Ended September 30, 2021
Total revenue	$	624,549	$	395,013	$	271,316	$	1,290,878		$	—		$	1,290,878
Elimination of intersegment revenue	(78,331)		(34,072)		(253)		(112,656)			—			(112,656)
Revenue from external customers	$	546,218	$	360,941	$	271,063	$	1,178,222		$	—		$	1,178,222
Income (loss) from construction operations	$	62,555	$	10,786	$	(5,470)	$	67,871		$	(15,778)	(a)	$	52,093
Capital expenditures	$	7,847	$	87	$	134	$	8,068		$	234		$	8,302
Depreciation and amortization(b)	$	26,234	$	416	$	777	$	27,427		$	2,634		$	30,061
Three Months Ended September 30, 2020
Total revenue	$	723,324	$	552,823	$	322,091	$	1,598,238		$	—		$	1,598,238
Elimination of intersegment revenue	(111,328)		(44,683)		(136)		(156,147)			—			(156,147)
Revenue from external customers	$	611,996	$	508,140	$	321,955	$	1,442,091		$	—		$	1,442,091
Income (loss) from construction operations	$	70,237	$	15,815	$	9,700	$	95,752	(c)	$	(12,731)	(a)	$	83,021
Capital expenditures	$	10,996	$	438	$	224	$	11,658		$	352		$	12,010
Depreciation and amortization(b)	$	26,659	$	419	$	1,002	$	28,080		$	2,778		$	30,858

____________________________________________________________________________________________________

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

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

(c)During the three months ended September 30, 2020, income (loss) from construction operations was positively impacted by $19.6 million (a favorable after-tax impact of $14.1 million, or $0.28 per diluted share) as a result of a favorable arbitration decision related to a dispute in the Specialty Contractors segment. This favorable impact was largely offset by an adverse impact of $15.2 million (an unfavorable after-tax impact of $10.9 million, or $0.21 per diluted share) due to an unfavorable legal ruling pertaining to a mechanical project in California in the Specialty Contractors segment.

	Reportable Segments
(in thousands)	Civil		Building		Specialty Contractors		Total			Corporate			Consolidated Total
Nine Months Ended September 30, 2021
Total revenue	$	1,850,748	$	1,267,984	$	877,634	$	3,996,366		$	—		$	3,996,366
Elimination of intersegment revenue	(273,603)		(117,150)		(553)		(391,306)			—			(391,306)
Revenue from external customers	$	1,577,145	$	1,150,834	$	877,081	$	3,605,060		$	—		$	3,605,060
Income (loss) from construction operations	$	187,733	$	19,514	$	5,814	$	213,061	(a)	$	(42,511)	(b)	$	170,550
Capital expenditures	$	26,027	$	211	$	298	$	26,536		$	626		$	27,162
Depreciation and amortization(c)	$	80,125	$	1,272	$	2,628	$	84,025		$	8,171		$	92,196
Nine Months Ended September 30, 2020
Total revenue	$	1,948,095	$	1,548,223	$	839,040	$	4,335,358		$	—		$	4,335,358
Elimination of intersegment revenue	(280,494)		(85,298)		(319)		(366,111)			—			(366,111)
Revenue from external customers	$	1,667,601	$	1,462,925	$	838,721	$	3,969,247		$	—		$	3,969,247
Income (loss) from construction operations	$	181,756	$	37,120	$	6,591	$	225,467	(d)	$	(37,523)	(b)	$	187,944
Capital expenditures	$	41,139	$	636	$	952	$	42,727		$	669		$	43,396
Depreciation and amortization(c)	$	67,050	$	1,274	$	2,990	$	71,314		$	8,320		$	79,634

____________________________________________________________________________________________________

(a)During the nine months ended September 30, 2021, the Company recorded a reduction of $20.1 million in cost of operations (an after-tax impact of $14.6 million, or $0.28 per diluted share) due to a favorable legal judgment on a completed electrical project in New York in the Specialty Contractors segment. The judgment awarded the Company the recovery of certain costs previously incurred. The Company also recognized $18.1 million of additional revenue (an after-tax impact of $13.0 million, or $0.25 per diluted share) as a result of favorable adjustments on a Civil segment mass-transit project reflecting improved profitability due to the mitigation of certain risks as the project progresses toward completion. The Company’s income from construction operations was also negatively impacted by $14.5 million (an after-tax impact of $10.5 million, or $0.21 per diluted share) due to changes in estimates on an electrical project in New York in the Specialty Contractors segment that included unfavorable adjustments and the negative impact to the period associated with increases to project forecasts due to growth in unapproved change orders (expected to be negotiated in future periods).

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

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

(d)During the nine months ended September 30, 2020, income (loss) from construction operations was adversely impacted by $15.2 million (an unfavorable after-tax impact of $10.9 million, or $0.21 per diluted share) in the third quarter of 2020 due to an unfavorable legal ruling pertaining to a mechanical project in California in the Specialty Contractors segment, as well as by $13.2 million (an unfavorable after-tax impact of $9.5 million, or $0.19 per diluted share) in the second quarter of 2020 due to an adverse arbitration ruling pertaining to an electrical project in New York in the Specialty Contractors segment. These adverse impacts were mostly offset by $19.6 million (a favorable after-tax impact of $14.1 million, or $0.28 per diluted share) in the third quarter of 2020 as a result of a favorable arbitration decision related to a dispute in the Specialty Contractors segment.

Reconciliation of Segment Results to Consolidated Income Before Income Taxes

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Income from construction operations	$	52,093	$	83,021	$	170,550	$	187,944
Other income (expense)	(464)		(8,048)		1,142		(8,364)
Interest expense	(16,694)		(25,613)		(52,442)		(58,513)
Income before income taxes	$	34,935	$	49,360	$	119,250	$	121,067

Total Assets for Reportable Segments

Total assets by segment were as follows:

(in thousands)	As of September 30, 2021		As of December 31, 2020
Civil	$	3,255,994	$	3,141,991
Building	1,054,260		1,147,649
Specialty Contractors	654,946		673,891
Corporate and other(a)	(137,450)		82,086
Total assets	$	4,827,750	$	5,045,617

____________________________________________________________________________________________________

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

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Revenue (Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 1,178,222	$ 1,442,091	$ 3,605,060	$ 3,969,247
State and local agencies
Disaggregation of Revenue [Line Items]
Revenue	688,272	808,394	1,995,967	2,258,527
Federal agencies
Disaggregation of Revenue [Line Items]
Revenue	113,833	110,615	341,390	277,535
Private owners
Disaggregation of Revenue [Line Items]
Revenue	376,117	523,082	1,267,703	1,433,185
Civil
Disaggregation of Revenue [Line Items]
Revenue	546,218	611,996	1,577,145	1,667,601
Civil | State and local agencies
Disaggregation of Revenue [Line Items]
Revenue	478,720	526,771	1,350,555	1,426,644
Civil | Federal agencies
Disaggregation of Revenue [Line Items]
Revenue	48,680	48,861	149,648	128,112
Civil | Private owners
Disaggregation of Revenue [Line Items]
Revenue	18,818	36,364	76,942	112,845
Civil | Mass transit (includes certain transportation and tunneling projects)
Disaggregation of Revenue [Line Items]
Revenue	386,913	372,131	1,062,322	1,024,083
Civil | Bridges
Disaggregation of Revenue [Line Items]
Revenue	67,117	104,722	179,059	246,006
Civil | Military defense facilities
Disaggregation of Revenue [Line Items]
Revenue	46,615	44,246	140,736	102,898
Civil | Water
Disaggregation of Revenue [Line Items]
Revenue	22,470	23,277	74,080	76,569
Civil | Highways
Disaggregation of Revenue [Line Items]
Revenue	7,101	30,086	48,153	98,259
Civil | Other
Disaggregation of Revenue [Line Items]
Revenue	16,002	37,534	72,795	119,786
Building
Disaggregation of Revenue [Line Items]
Revenue	360,941	508,140	1,150,834	1,462,925
Building | State and local agencies
Disaggregation of Revenue [Line Items]
Revenue	99,540	126,448	268,396	430,212
Building | Federal agencies
Disaggregation of Revenue [Line Items]
Revenue	50,437	32,392	150,085	99,013
Building | Private owners
Disaggregation of Revenue [Line Items]
Revenue	210,964	349,300	732,353	933,700
Building | Mass transit (includes certain transportation and tunneling projects)
Disaggregation of Revenue [Line Items]
Revenue	38,868	50,206	99,747	174,605
Building | Other
Disaggregation of Revenue [Line Items]
Revenue	21,068	32,708	76,507	100,525
Building | Commercial and industrial facilities
Disaggregation of Revenue [Line Items]
Revenue	75,402	162,364	307,414	402,312
Building | Hospitality and gaming
Disaggregation of Revenue [Line Items]
Revenue	89,317	119,588	276,029	346,517
Building | Municipal and government
Disaggregation of Revenue [Line Items]
Revenue	76,471	66,505	222,855	215,230
Building | Education facilities
Disaggregation of Revenue [Line Items]
Revenue	39,528	50,425	123,988	129,085
Building | Health care facilities
Disaggregation of Revenue [Line Items]
Revenue	20,287	26,344	44,294	94,651
Specialty Contractors
Disaggregation of Revenue [Line Items]
Revenue	271,063	321,955	877,081	838,721
Specialty Contractors | State and local agencies
Disaggregation of Revenue [Line Items]
Revenue	110,012	155,175	377,016	401,671
Specialty Contractors | Federal agencies
Disaggregation of Revenue [Line Items]
Revenue	14,716	29,362	41,657	50,410
Specialty Contractors | Private owners
Disaggregation of Revenue [Line Items]
Revenue	146,335	137,418	458,408	386,640
Specialty Contractors | Mass transit (includes certain transportation and tunneling projects)
Disaggregation of Revenue [Line Items]
Revenue	135,971	179,875	465,179	447,180
Specialty Contractors | Water
Disaggregation of Revenue [Line Items]
Revenue	29,161	20,413	67,829	46,341
Specialty Contractors | Other
Disaggregation of Revenue [Line Items]
Revenue	30,104	29,039	87,635	87,569
Specialty Contractors | Commercial and industrial facilities
Disaggregation of Revenue [Line Items]
Revenue	33,897	41,378	109,283	115,382
Specialty Contractors | Education facilities
Disaggregation of Revenue [Line Items]
Revenue	13,876	12,236	45,657	39,131
Specialty Contractors | Multi-unit residential
Disaggregation of Revenue [Line Items]
Revenue	$ 28,054	$ 39,014	$ 101,498	$ 103,118

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Revenue (Schedule Of Revenue By Contract Type) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 1,178,222	$ 1,442,091	$ 3,605,060	$ 3,969,247
Fixed price
Disaggregation of Revenue [Line Items]
Revenue	798,641	887,035	2,398,421	2,494,948
Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	225,317	310,401	748,634	799,428
Unit price
Disaggregation of Revenue [Line Items]
Revenue	95,117	155,951	291,913	379,855
Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	59,147	88,704	166,092	295,016
Civil
Disaggregation of Revenue [Line Items]
Revenue	546,218	611,996	1,577,145	1,667,601
Civil | Fixed price
Disaggregation of Revenue [Line Items]
Revenue	473,212	484,851	1,353,436	1,349,750
Civil | Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	502	179	2,270	768
Civil | Unit price
Disaggregation of Revenue [Line Items]
Revenue	71,429	124,506	212,678	307,654
Civil | Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	1,075	2,460	8,761	9,429
Building
Disaggregation of Revenue [Line Items]
Revenue	360,941	508,140	1,150,834	1,462,925
Building | Fixed price
Disaggregation of Revenue [Line Items]
Revenue	89,895	117,650	269,693	401,957
Building | Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	219,395	308,299	737,251	794,810
Building | Unit price
Disaggregation of Revenue [Line Items]
Revenue	130	254	(1,323)	1,417
Building | Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	51,521	81,937	145,213	264,741
Specialty Contractors
Disaggregation of Revenue [Line Items]
Revenue	271,063	321,955	877,081	838,721
Specialty Contractors | Fixed price
Disaggregation of Revenue [Line Items]
Revenue	235,534	284,534	775,292	743,241
Specialty Contractors | Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	5,420	1,923	9,113	3,850
Specialty Contractors | Unit price
Disaggregation of Revenue [Line Items]
Revenue	23,558	31,191	80,558	70,784
Specialty Contractors | Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	$ 6,551	$ 4,307	$ 12,118	$ 20,846

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Revenue (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Net revenue recognized related to performance obligations satisfies (or partially satisfied) in prior periods	$ 2.1	$ 30.4	$ 37.1	$ 71.3
Civil
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations revenue amount	4,400.0	5,100.0	$ 4,400.0	5,100.0
Civil | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations revenue period			3 years
Civil | Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations revenue period			5 years
Building
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations revenue amount	1,800.0	1,900.0	$ 1,800.0	1,900.0
Specialty Contractors
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations revenue amount	$ 1,400.0	$ 1,900.0	$ 1,400.0	$ 1,900.0
Building and Specialty Contractors | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations revenue period			1 year
Building and Specialty Contractors | Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations revenue period			3 years

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Contract Assets and Liabilities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Capitalized contract costs amortized and recognized as expense	$ 11.3	$ 12.5	$ 36.6	$ 35.2
Liability revenue recognized from contract with customer	$ 288.0	$ 461.8	$ 608.4	$ 662.7

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Contract Assets and Liabilities (Schedule Of Contract Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Retainage receivable	$ 637,124	$ 648,441
Costs and estimated earnings in excess of billings:
Claims	840,176	752,783
Unapproved change orders	448,600	415,489
Other unbilled costs and profits	99,234	68,462
Total costs and estimated earnings in excess of billings	1,388,010	1,236,734
Capitalized contract costs	72,543	74,452
Total contract assets	$ 2,097,677	$ 1,959,627

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Contract Assets and Liabilities (Schedule of Contract Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Retainage payable	$ 286,036	$ 315,135
Billings in excess of costs and estimated earnings	754,939	839,222
Total contract liabilities	$ 1,040,975	$ 1,154,357

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Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 187,535	$ 374,289
Restricted cash	6,922	77,563
Total cash, cash equivalents and restricted cash	194,457	451,852	$ 429,340	$ 202,101
Restricted cash held to repay outstanding principal balance of Convertible Notes		69,900
Joint venture cash and cash equivalents
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	121,295	163,448
Cash and cash equivalents available for general corporate purposes
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 66,240	$ 210,841

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Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income attributable to Tutor Perini Corporation	$ 15,394	$ 36,819	$ 62,593	$ 72,899
Weighted-average common shares outstanding, basic (in shares)	51,072	50,787	50,995	50,598
Effect of dilutive restricted stock units and stock options (in shares)	294	454	369	406
Weighted-average common shares outstanding, diluted (in shares)	51,366	51,241	51,364	51,004
Net income attributable to Tutor Perini Corporation per common share: Basic (in dollars per share)	$ 0.30	$ 0.72	$ 1.23	$ 1.44
Net income attributable to Tutor Perini Corporation per common share: Diluted (in dollars per share)	$ 0.30	$ 0.72	$ 1.22	$ 1.43
Anti-dilutive securities not included above (in shares)	2,131	1,514	1,861	1,977

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Income Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rate	24.90%	0.10%	22.00%	12.20%

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Goodwill And Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment charge		$ 0
Amortization expense	$ 9,300,000		$ 9,300,000	$ 26,646,000	$ 23,879,000
Estimated amortization expense, remainder of 2021	9,300,000			9,300,000
Estimated amortization expense, 2022	14,400,000			14,400,000
Estimated amortization expense, 2023	2,500,000			2,500,000
Estimated amortization expense, 2024	2,500,000			2,500,000
Estimated amortization expense, 2025	2,500,000			2,500,000
Estimated amortization expense, 2026	2,500,000			2,500,000
Estimated amortization expense, after year 2026	$ 12,400,000			$ 12,400,000

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Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Gross goodwill as of December 31, 2020		$ 1,072,991
Accumulated impairment as of December 31, 2020		(867,848)
Balance at beginning of period	$ 205,143
Current year activity	0
Balance at end of period	205,143
Civil
Goodwill [Roll Forward]
Gross goodwill as of December 31, 2020		492,074
Accumulated impairment as of December 31, 2020		(286,931)
Balance at beginning of period	205,143
Current year activity	0
Balance at end of period	205,143
Building
Goodwill [Roll Forward]
Gross goodwill as of December 31, 2020		424,724
Accumulated impairment as of December 31, 2020		(424,724)
Balance at beginning of period	0
Current year activity	0
Balance at end of period	0
Specialty Contractors
Goodwill [Roll Forward]
Gross goodwill as of December 31, 2020		156,193
Accumulated impairment as of December 31, 2020		$ (156,193)
Balance at beginning of period	0
Current year activity	0
Balance at end of period	$ 0

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Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Total intangible assets
Cost		$ 387,040	$ 387,040
Accumulated Amortization		(177,504)	(150,858)
Accumulated Impairment Charge		(113,067)	(113,067)
Carrying Value		96,469	123,115
Trade Names
Finite-Lived intangible assets
Cost		74,350	74,350
Accumulated Amortization		(25,620)	(23,754)
Accumulated Impairment Charge		(23,232)	(23,232)
Carrying Value		$ 25,498	27,364
Weighted-Average Amortization Period	20 years	20 years
Customer relationships
Finite-Lived intangible assets
Cost		$ 39,800	39,800
Accumulated Amortization		(22,868)	(22,103)
Accumulated Impairment Charge		(16,645)	(16,645)
Carrying Value		$ 287	1,052
Weighted-Average Amortization Period	12 years	12 years
Construction contract backlog
Finite-Lived intangible assets
Cost		$ 149,290	149,290
Accumulated Amortization		(129,016)	(105,001)
Carrying Value		$ 20,274	44,289
Weighted-Average Amortization Period	3 years	3 years
Trade Names
Indefinite-lived intangible assets
Cost		$ 117,600	117,600
Accumulated Impairment Charge		(67,190)	(67,190)
Carrying Value		50,410	50,410
Contractor license
Indefinite-lived intangible assets
Cost		6,000	6,000
Accumulated Impairment Charge		$ (6,000)	$ (6,000)

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Financial Commitments (Narrative) (Details)		9 Months Ended
	Aug. 18, 2020 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2022	Jun. 15, 2021 USD ($)	Dec. 31, 2020 USD ($)	Aug. 19, 2020 USD ($)	Apr. 20, 2017 USD ($)	Jun. 15, 2016 USD ($)
BMO Harris Bank
Debt Instrument [Line Items]
Applicable margin on overdue amounts (as a percent)	2.00%
First Lien | BMO Harris Bank
Debt Instrument [Line Items]
Net leverage ratio (maximum)	1.35
2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Net leverage ratio (maximum)	2.75
Weighted-average annual interest rate on borrowings		6.50%
Remaining borrowing capacity		$ 175,000,000
Forecast | 2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Net leverage ratio (maximum)			2.25
Line of Credit | 2020 Credit Agreement | BMO Harris Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 425,000,000
Premium fee (as a percent)	1.00%
Periodic payment principal percentage	0.25%
Unsecured Debt | BMO Harris Bank
Debt Instrument [Line Items]
Total net leverage ratio (maximum)	3.50
Fixed charge coverage ratio (maximum)	2.00
Convertible Notes
Debt Instrument [Line Items]
Face amount								$ 200,000,000
Interest rate								2.875%
Aggregate principal repurchase face amount						$ 130,100,000
Aggregate principal repurchase amount						$ 132,400,000
Current principal amount				$ 69,900,000	$ 69,918,000
Senior Notes | 2017 Senior Notes
Debt Instrument [Line Items]
Current principal amount		$ 500,000,000			500,000,000
Senior Notes | Private Placement | 2017 Senior Notes
Debt Instrument [Line Items]
Face amount							$ 500,000,000
Interest rate							6.875%
Redemption price, change of control triggering event (as a percent)		101.00%
Revolving Credit Facility | 2017 Credit Facility
Debt Instrument [Line Items]
Unamortized debt issuance costs					$ 2,600,000
Revolving Credit Facility | 2020 Credit Agreement | BMO Harris Bank
Debt Instrument [Line Items]
Increase in line of credit	$ 173,500,000
Accordion feature, percentage of LTM EBITDA	50.00%
Revolving Credit Facility | 2020 Revolver
Debt Instrument [Line Items]
Unamortized debt issuance costs		$ 2,200,000
Revolving Credit Facility | Line of Credit | 2020 Credit Agreement | BMO Harris Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 175,000,000
Letters of Credit | Line of Credit | 2020 Credit Agreement | BMO Harris Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	75,000,000
Bridge Loan | Line of Credit | 2020 Credit Agreement | BMO Harris Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 10,000,000
Secured Debt | Junior Lien | BMO Harris Bank
Debt Instrument [Line Items]
Total net leverage ratio (maximum)	3.50
Federal Funds Rate | 2020 Credit Agreement | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
LIBOR | 2020 Credit Agreement | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
LIBOR | Term Loan B | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	4.75%
LIBOR | 2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	4.75%
LIBOR | Minimum | Term Loan B | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	4.50%
LIBOR | Minimum | 2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	4.25%
LIBOR | Maximum | Term Loan B | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	4.75%
LIBOR | Maximum | 2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	4.75%
Base Rate | Term Loan B | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%
Base Rate | 2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%
Base Rate | Minimum | Term Loan B | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	3.50%
Base Rate | Minimum | 2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Base Rate | Maximum | Term Loan B | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%
Base Rate | Maximum | 2020 Revolver | BMO Harris Bank
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%

XML

Financial Commitments (Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 967,984	$ 1,025,465
Less: Current maturities	28,029	100,188
Long-term debt, net	939,955	925,277
Term Loan B
Debt Instrument [Line Items]
Total debt	406,835	408,458
Convertible Notes
Debt Instrument [Line Items]
Total debt	0	67,878
Equipment financing and mortgages
Debt Instrument [Line Items]
Total debt	54,381	47,594
Other indebtedness
Debt Instrument [Line Items]
Total debt	10,774	6,264
2017 Senior Notes | Senior Notes
Debt Instrument [Line Items]
Total debt	495,994	495,271
2020 Revolver
Debt Instrument [Line Items]
Total debt	$ 0	$ 0

XML

Financial Commitments (Reconciliation of Outstanding Debt Balance to Reported Debt Balance) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 15, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 967,984		$ 1,025,465
Term Loan B
Debt Instrument [Line Items]
Outstanding Debt	420,750		423,938
Unamortized Discounts and Issuance Costs	(13,915)		(15,480)
Total debt	406,835		408,458
Convertible Notes
Debt Instrument [Line Items]
Outstanding Debt		$ 69,900	69,918
Unamortized Discounts and Issuance Costs			(2,040)
Total debt	0		67,878
2017 Senior Notes | Senior Notes
Debt Instrument [Line Items]
Outstanding Debt	500,000		500,000
Unamortized Discounts and Issuance Costs	(4,006)		(4,729)
Total debt	$ 495,994		$ 495,271

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Financial Commitments (Summary of Interest Expense as Reported in the Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Debt Instrument [Line Items]
Other interest	$ 532	$ 577	$ 1,422	$ 1,616
Cash portion of loss on extinguishment	0	786	0	786
Total cash interest expense	15,760	14,485	47,640	40,339
Non-cash interest expense			4,802	18,960
Non-cash portion of loss on extinguishment	0	8,311	0	8,311
Total non-cash interest expense	934	11,128	4,802	18,174
Total interest expense	16,694	25,613	52,442	58,513
Term Loan B
Debt Instrument [Line Items]
Cash interest expense	6,198	2,919	18,407	2,919
Non-cash interest expense	$ 547	253	$ 1,613	253
Effective interest rates	6.48%		6.48%
Convertible Notes
Debt Instrument [Line Items]
Cash interest expense		995	$ 921	3,870
Non-cash interest expense		2,073	$ 2,040	7,870
Effective interest rates	9.39%		9.39%
2017 Senior Notes | Senior Notes
Debt Instrument [Line Items]
Cash interest expense	$ 8,594	8,594	$ 25,781	25,781
Non-cash interest expense	$ 245	229	$ 723	674
Effective interest rates	7.13%		7.13%
2020 Revolver
Debt Instrument [Line Items]
Cash interest expense	$ 436	26	$ 1,109	26
Non-cash interest expense	$ 142	64	$ 426	64
2017 Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Cash interest expense		588		5,341
Non-cash interest expense		$ 198		$ 1,002

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Leases (Narrative) (Details)	Sep. 30, 2021
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, remaining lease terms	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, remaining lease terms	17 years

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Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 3,660	$ 3,563	$ 11,085	$ 10,991
Short-term lease expense	17,951	24,502	57,377	64,823
Lease expense, gross	21,611	28,065	68,462	75,814
Less: Sublease income	176	193	522	851
Total lease expense	$ 21,435	$ 27,872	$ 67,940	$ 74,963
Minimum
Lessee, Lease, Description [Line Items]
Short term lease, lease term			1 month
Maximum
Lessee, Lease, Description [Line Items]
Short term lease, lease term			1 year

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Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	OTHER ASSETS	OTHER ASSETS
Right-of-use assets	$ 55,845	$ 55,897
Liabilities
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Current lease liabilities	$ 8,060	$ 7,661
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Long-term lease liabilities	$ 51,690	$ 51,336
Total lease liabilities	$ 59,750	$ 58,997
Weighted-average remaining lease term	11 years 10 months 24 days	12 years 6 months
Weighted-average discount rate	9.40%	9.22%

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Leases (Supplemental Cash Flow And Other Information Related To Leases) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ (10,344)	$ (11,026)
Right-of-use assets obtained in exchange for lease liabilities	$ 6,686	$ 6,251

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Leases (Maturity Of Leases Liabilities On An Undiscounted Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Leases [Abstract]
2021 (excluding the nine months ended September 30, 2021)	$ 3,422
2022	12,474
2023	9,688
2024	7,640
2025	6,803
Thereafter	66,473
Total lease payments	106,500
Less: Imputed interest	46,750
Total	$ 59,750	$ 58,997

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Commitments and Contingencies (Details) - USD ($) $ in Millions				1 Months Ended				3 Months Ended	9 Months Ended
	Dec. 13, 2019	Jun. 04, 2019	Feb. 26, 2015	Sep. 30, 2018	Mar. 31, 2016	Jun. 30, 2015	Aug. 31, 2013	Dec. 31, 2019	Sep. 30, 2021	Jul. 02, 2018	Mar. 31, 2018
STP
Contingencies and Commitments
Ownership percentage in joint venture									45.00%
Alaskan Way Viaduct Matter
Contingencies and Commitments
Ownership percentage in joint venture									45.00%
Value of claim filed				$ 532.0	$ 57.2	$ 532.0
Value of counterclaim filed					$ 667.0
Settlement on judgment, awarded to other party	$ 57.2
Pre-tax charge, impact from jury verdict								$ 166.8
Pre-tax accrual, impact from jury verdict								$ 25.7
George Washington Bridge Bus Station Matter
Contingencies and Commitments
Value of claim filed			$ 30.0
Value of project							$ 100.0
Value of counterclaim filed in excess of											$ 113.0
Court issued writ of attachment amount		$ 23.0
Proof of claim amount	$ 113.0
Value of damages seeking										$ 113.0
Return Of Retainage By Developer | George Washington Bridge Bus Station Matter
Contingencies and Commitments
Value of counterclaim filed in excess of											$ 29.0

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Share-Based Compensation (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future grant (in shares)	1,036,709		1,036,709
Cash used to settle liabilities			$ 300,000	$ 300,000
Costs for share-based payment arrangements	$ 3,100,000	$ 2,500,000	8,100,000	$ 10,700,000
Unamortized share-based compensation expense	20,600,000		$ 20,600,000
Weighted average period over which unrecognized compensation cost is expected to be recognized			2 years 1 month 6 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)			555,986	75,000
Weighted-average fair values per share (in dollars per share)			$ 16.52	$ 13.93
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock options granted (in shares)			100,000	75,000
Weighted average grant date fair value (in dollars per share)			$ 15.21	$ 3.94
Weighted-average exercise prices (in dollars per share)			$ 19.24	$ 25.70
Expected life			6 years 6 months
Expected volatility (as a percent)			73.74%
Risk-free rate			1.44%
Expected quarterly dividends			$ 0
Unrestricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)			96,668	194,177
Weighted-average fair values per share (in dollars per share)			$ 15.62	$ 8.60
Cash-settled Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)			275,986
Weighted-average fair values per share (in dollars per share)			$ 20.21
Restricted Stock Units, Guaranteed Minimum Payouts
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liabilities recognized for restricted stock grants	$ 3,600,000		$ 3,600,000		$ 2,400,000

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Employee Pension Plans (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Pension Plan Assets
Company contribution	$ 1.0	$ 3.2

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Employee Pension Plans (Summary Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Summary of net periodic benefit cost
Interest cost	$ 582	$ 758	$ 1,746	$ 2,273
Service cost	236	231	709	694
Expected return on plan assets	(1,015)	(1,006)	(3,045)	(3,017)
Recognized net actuarial losses	683	592	2,049	1,775
Net periodic benefit cost	$ 486	$ 575	$ 1,459	$ 1,725

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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Assets:
Cash and cash equivalents maturity period (maximum)	3 months
Restricted and other investments, term (maximum)	5 years	5 years
Municipal Bonds
Assets:
Investments in lieu of retainage	$ 1,300	$ 1,300
US Government Agencies Securities
Assets:
Restricted and other investments	40,000	40,500
Corporate Debt Securities
Assets:
Investments in lieu of retainage	55,300
Restricted and other investments	45,800	37,500
Fair value measured on a recurring basis
Assets:
Cash and cash equivalents	187,535	374,289
Restricted cash	6,922	77,563
Restricted investments	86,576	78,912
Investments in lieu of retainage	82,193	93,909
Total	363,226	624,673
Fair value measured on a recurring basis | Level 1
Assets:
Cash and cash equivalents	187,535	374,289
Restricted cash	6,922	77,563
Restricted investments	0	0
Investments in lieu of retainage	25,638	92,609
Total	220,095	544,461
Fair value measured on a recurring basis | Level 2
Assets:
Cash and cash equivalents	0	0
Restricted cash	0	0
Restricted investments	86,576	78,912
Investments in lieu of retainage	56,555	1,300
Total	143,131	80,212
Fair value measured on a recurring basis | Level 3
Assets:
Cash and cash equivalents	0	0
Restricted cash	0	0
Restricted investments	0	0
Investments in lieu of retainage	0	0
Total	0	0
Certificates of Deposit
Assets:
Restricted and other investments	800	900
Money Market Funds
Assets:
Investments in lieu of retainage	$ 25,600	$ 92,600

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Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Senior Notes | 2017 Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	$ 513.6	$ 495.0
Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value		69.1
Term Loan B
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	$ 420.8	$ 425.0

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Variable Interest Entities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Variable Interest Entity [Line Items]
Assets, current	$ 3,937,431		$ 3,937,431		$ 4,080,457
Liabilities, current	1,932,989		1,932,989		2,264,363
Revenue	$ 1,178,222	$ 1,442,091	$ 3,605,060	$ 3,969,247
Purple Line Extension Section 2 And Section 3
Variable Interest Entity [Line Items]
Percent interest in the joint venture			75.00%
Newark Airport Terminal One Design Build Project
Variable Interest Entity [Line Items]
Percent interest in the joint venture			80.00%
Joint Venture With O&G Industries | Purple Line Extension Section 2 And Section 3
Variable Interest Entity [Line Items]
Revenue			$ 2,800,000
O&G | Purple Line Extension Section 2 And Section 3
Variable Interest Entity [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners	25.00%		25.00%
Joint Venture With Parsons | Newark Airport Terminal One Design Build Project
Variable Interest Entity [Line Items]
Revenue			$ 1,400,000
Parsons Corporation | Newark Airport Terminal One Design Build Project
Variable Interest Entity [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners	20.00%		20.00%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets, current	$ 1,700		$ 1,700		600
Liabilities, current	1,500		1,500		500
VIEs
Variable Interest Entity [Line Items]
Assets, current	510,100		510,100		405,700
Liabilities, current	460,800		460,800		514,900
Assets, noncurrent	$ 3,300		$ 3,300		$ 14,200

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Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	$ 1,610,430	$ 1,464,141	$ 1,542,945	$ 1,430,525
Net income	26,241	49,323	92,957	106,320
Other comprehensive income (loss)	(1,081)	1,301	(290)	1,638
Share-based compensation	2,030	2,471	6,787	10,163
Convertible note repayment allocated to conversion option		(929)		(929)
Issuance of common stock, net	(2)	(703)	(1,531)	(1,203)
Contributions from noncontrolling interests	3,000		7,000
Distributions to noncontrolling interests	(10,000)	(6,307)	(17,250)	(37,217)
Balance at the end of the period	1,630,618	1,509,297	1,630,618	1,509,297
Common Stock
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	51,072	50,771	50,827	50,279
Issuance of common stock, net		56	245	548
Balance at the end of the period	51,072	50,827	51,072	50,827
Additional Paid-in Capital
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	1,130,368	1,124,672	1,127,385	1,117,972
Share-based compensation	2,030	2,471	6,787	10,163
Convertible note repayment allocated to conversion option		(929)		(929)
Issuance of common stock, net	(2)	(759)	(1,776)	(1,751)
Balance at the end of the period	1,132,396	1,125,455	1,132,396	1,125,455
Retained Earnings
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	469,584	350,071	422,385	313,991
Net income	15,394	36,819	62,593	72,899
Balance at the end of the period	484,978	386,890	484,978	386,890
Accumulated Other Comprehensive Loss
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	(46,526)	(40,597)	(46,741)	(42,100)
Other comprehensive income (loss)	(634)	781	(419)	2,284
Balance at the end of the period	(47,160)	(39,816)	(47,160)	(39,816)
Noncontrolling Interests
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	5,932	(20,776)	(10,911)	(9,617)
Net income	10,847	12,504	30,364	33,421
Other comprehensive income (loss)	(447)	520	129	(646)
Contributions from noncontrolling interests	3,000		7,000
Distributions to noncontrolling interests	(10,000)	(6,307)	(17,250)	(37,217)
Balance at the end of the period	$ 9,332	$ (14,059)	$ 9,332	$ (14,059)

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Other Comprehensive Income (Loss) (Schedule Of Components Of Other Comprehensive Income (Loss) And Related Tax Effects) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Defined benefit pension plan adjustments, Before-Tax Amount	$ 683	$ 592	$ 2,049	$ 1,775
Defined benefit pension plan adjustments, Tax (Expense) Benefit	(191)	(168)	(574)	(504)
Defined benefit pension plan adjustments, Net-of-Tax Amount	(492)	(424)	(1,475)	(1,271)
Foreign currency translation adjustment, Before-Tax Amount	(1,389)	1,333	(541)	(1,621)
Foreign currency translation adjustment, Tax (Expense) Benefit	264	(231)	188	365
Foreign currency translation adjustment, Net-of-Tax Amount	(1,125)	1,102	(353)	(1,256)
Unrealized gain (loss) in fair value of investments, Before-Tax Amount	(581)	(281)	(1,828)	2,078
Unrealized gain (loss) in fair value of investments, Tax (Expense) Benefit	133	56	416	(455)
Unrealized gain (loss) in fair value of investments, Net-of-Tax Amount	(448)	(225)	(1,412)	1,623
Total other comprehensive income (loss), Before-Tax Amount	(1,287)	1,644	(320)	2,232
Total other comprehensive income (loss), Tax Benefit (Expense)	206	(343)	30	(594)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	(1,081)	1,301	(290)	1,638
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Before-Tax Amount	(447)	520	129	(646)
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Tax (Expense) Benefit	0	0	0	0
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Net-of-Tax Amount	(447)	520	129	(646)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation, Before-Tax Amount	(840)	1,124	(449)	2,878
Total other comprehensive income (loss) attributable to Tutor Perini Corporation, Tax (Expense) Benefit	206	(343)	30	(594)
Total other comprehensive income (loss)	$ (634)	$ 781	$ (419)	$ 2,284

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Other Comprehensive Income (Loss) (Schedule Of Changes In AOCI Balances By Component (After-Tax)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period			$ 1,553,856
Other comprehensive income (loss) before reclassifications	$ (1,069)	$ 579	(1,700)	$ 1,268
Amounts reclassified from AOCI	435	202	1,281	1,016
Total other comprehensive income (loss)	(634)	781	(419)	2,284
Balance at the end of the period	1,621,286		1,621,286
Defined Benefit Pension Plan
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	(43,104)	(36,979)	(44,087)	(37,826)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCI	492	424	1,475	1,271
Total other comprehensive income (loss)	492	424	1,475	1,271
Balance at the end of the period	(42,612)	(36,555)	(42,612)	(36,555)
Foreign Currency Translation
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	(5,126)	(6,563)	(5,322)	(5,371)
Other comprehensive income (loss) before reclassifications	(678)	582	(482)	(610)
Amounts reclassified from AOCI	0	0	0	0
Total other comprehensive income (loss)	(678)	582	(482)	(610)
Balance at the end of the period	(5,804)	(5,981)	(5,804)	(5,981)
Unrealized Gain (Loss) in Fair Value of Investments, Net
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	1,704	2,945	2,668	1,097
Other comprehensive income (loss) before reclassifications	(391)	(3)	(1,218)	1,878
Amounts reclassified from AOCI	(57)	(222)	(194)	(255)
Total other comprehensive income (loss)	(448)	(225)	(1,412)	1,623
Balance at the end of the period	1,256	2,720	1,256	2,720
Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	(46,526)	(40,597)	(46,741)	(42,100)
Balance at the end of the period	$ (47,160)	$ (39,816)	$ (47,160)	$ (39,816)

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Other Comprehensive Income (Loss) (AOCI Reclassifications) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income (expense)	$ 464	$ 8,048	$ (1,142)	$ 8,364
Income tax expense (benefit)	8,694	37	26,293	14,747
Net income attributable to Tutor Perini Corporation	(15,394)	(36,819)	(62,593)	(72,899)
Defined Benefit Pension Plan | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income (expense)	683	592	2,049	1,775
Income tax expense (benefit)	(191)	(168)	(574)	(504)
Net income attributable to Tutor Perini Corporation	492	424	1,475	1,271
Unrealized gain in fair value of investment adjustments | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income (expense)	(73)	(281)	(246)	(323)
Income tax expense (benefit)	16	59	52	68
Net income attributable to Tutor Perini Corporation	$ (57)	$ (222)	$ (194)	$ (255)

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Business Segments (Narrative) (Details)	9 Months Ended
	Sep. 30, 2021 segment
Segment Reporting [Abstract]
Number of reportable segments	3

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Business Segments (Reportable Segments) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 1,178,222	$ 1,442,091	$ 3,605,060	$ 3,969,247
Income (loss) from construction operations	52,093	83,021	170,550	187,944
Capital expenditures	8,302	12,010	27,162	43,396
Depreciation and amortization	30,061	30,858	92,196	79,634
Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,290,878	1,598,238	3,996,366	4,335,358
Income (loss) from construction operations	67,871	95,752	213,061	225,467
Capital expenditures	8,068	11,658	26,536	42,727
Depreciation and amortization	27,427	28,080	84,025	71,314
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	(112,656)	(156,147)	(391,306)	(366,111)
Corporate
Segment Reporting Information [Line Items]
Income (loss) from construction operations	(15,778)	(12,731)	(42,511)	(37,523)
Capital expenditures	234	352	626	669
Depreciation and amortization	2,634	2,778	8,171	8,320
Civil
Segment Reporting Information [Line Items]
Revenue	546,218	611,996	1,577,145	1,667,601
Civil | Favorable Adjustments Reflecting Improved Profitability on Mass-Transit Project
Segment Reporting Information [Line Items]
Favorable arbitration			18,100
Favorable arbitration, after tax			$ 13,000
Favorable arbitration, after tax, diluted (in dollars per share)			$ 0.25
Civil | Operating Segments
Segment Reporting Information [Line Items]
Revenue	624,549	723,324	$ 1,850,748	1,948,095
Income (loss) from construction operations	62,555	70,237	187,733	181,756
Capital expenditures	7,847	10,996	26,027	41,139
Depreciation and amortization	26,234	26,659	80,125	67,050
Civil | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	(78,331)	(111,328)	(273,603)	(280,494)
Building
Segment Reporting Information [Line Items]
Revenue	360,941	508,140	1,150,834	1,462,925
Building | Operating Segments
Segment Reporting Information [Line Items]
Revenue	395,013	552,823	1,267,984	1,548,223
Income (loss) from construction operations	10,786	15,815	19,514	37,120
Capital expenditures	87	438	211	636
Depreciation and amortization	416	419	1,272	1,274
Building | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	(34,072)	(44,683)	(117,150)	(85,298)
Specialty Contractors
Segment Reporting Information [Line Items]
Revenue	271,063	321,955	877,081	838,721
Specialty Contractors | Favorable Legal Ruling Pertaining to Dispute in Specialty Contractors Segment
Segment Reporting Information [Line Items]
Favorable arbitration		19,600		19,600
Favorable arbitration, after tax		$ 14,100		$ 14,100
Favorable arbitration, after tax, diluted (in dollars per share)		$ 0.28		$ 0.28
Specialty Contractors | Unfavorable Legal Ruling Pertaining to Mechanical Project in California
Segment Reporting Information [Line Items]
Adverse arbitration, loss in period		$ 15,200		$ 15,200
Adverse arbitration, loss in period, after tax		$ 10,900		$ 10,900
Adverse arbitration, loss in period, after tax, diluted (in dollars per share)		$ 0.21		$ 0.21
Specialty Contractors | Favorable Legal Ruling Pertaining to Electrical Project in New York
Segment Reporting Information [Line Items]
Favorable arbitration			20,100
Favorable arbitration, after tax			$ 14,600
Favorable arbitration, after tax, diluted (in dollars per share)			$ 0.28
Specialty Contractors | Unfavorable Adjustment Due to Changes in Estimate on Electrical Project in New York
Segment Reporting Information [Line Items]
Adverse arbitration, loss in period			$ (14,500)
Adverse arbitration, loss in period, after tax			$ (10,500)
Adverse arbitration, loss in period, after tax, diluted (in dollars per share)			$ (0.21)
Specialty Contractors | Adverse Arbitration Ruling Pertaining to Electrical Project in New York
Segment Reporting Information [Line Items]
Adverse arbitration, loss in period				$ 13,200
Adverse arbitration, loss in period, after tax				$ 9,500
Adverse arbitration, loss in period, after tax, diluted (in dollars per share)				$ 0.19
Specialty Contractors | Operating Segments
Segment Reporting Information [Line Items]
Revenue	271,316	$ 322,091	$ 877,634	$ 839,040
Income (loss) from construction operations	(5,470)	9,700	5,814	6,591
Capital expenditures	134	224	298	952
Depreciation and amortization	777	1,002	2,628	2,990
Specialty Contractors | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	$ (253)	$ (136)	$ (553)	$ (319)

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Business Segments (Reconciliation Of Segment Results To Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting [Abstract]
Income from construction operations	$ 52,093	$ 83,021	$ 170,550	$ 187,944
Other income (expense)	(464)	(8,048)	1,142	(8,364)
Interest expense	(16,694)	(25,613)	(52,442)	(58,513)
Income before income taxes	$ 34,935	$ 49,360	$ 119,250	$ 121,067

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Business Segments (Total Assets For Reportable Segments) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 4,827,750	$ 5,045,617
Corporate and other
Segment Reporting Information [Line Items]
Assets	(137,450)	82,086
Civil | Operating Segments
Segment Reporting Information [Line Items]
Assets	3,255,994	3,141,991
Building | Operating Segments
Segment Reporting Information [Line Items]
Assets	1,054,260	1,147,649
Specialty Contractors | Operating Segments
Segment Reporting Information [Line Items]
Assets	$ 654,946	$ 673,891