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, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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

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

As of April ~~27, 2020,~~28, 2021, the registrant had ~~100,669,694~~102,408,608 shares of common stock, $1.00 par value per share, outstanding.

		March 31, 2020			December 31, 2019				March 31, 2021			December 31, 2020
Assets	Assets							Assets
Current assets:	Current assets:							Current assets:
	Cash and cash equivalents (including $43,227 and $51,171 Cash of consolidated joint ventures)	$	119,299		$	182,688		Cash and cash equivalents (including $52,324 and $75,220 Cash of consolidated joint ventures)	$	398,178		$	483,609
	Restricted cash and investments		7,423			12,686		Restricted cash and investments		1,233			3,606
	Accounts receivable, net (including $202,462 and $166,355 Accounts receivable of consolidated joint ventures, net)		758,225			671,492		Accounts receivable, net (including $215,641 and $190,643 Accounts receivable of consolidated joint ventures, net)		693,584			698,578
	Contract assets (including $27,081 and $26,458 Contract assets of consolidated joint ventures)		626,513			575,089		Contract assets (including $24,539 and $23,498 Contract assets of consolidated joint ventures)		607,676			576,568
	Prepaid expenses and other current assets (including $11,587 and $11,182 Prepaid expenses and other current assets of consolidated joint ventures)		90,512			84,454		Prepaid expenses and other current assets (including $7,260 and $3,045 Prepaid expenses and other current assets of consolidated joint ventures)		101,536			80,769
	Total current assets		1,601,972			1,526,409		Total current assets		1,802,207			1,843,130

	Property and equipment, net (including $2,752 and $2,945 Property and equipment of consolidated joint ventures, net)		124,600			122,751		Property and equipment, net (including $2,528 and $2,629 Property and equipment of consolidated joint ventures, net)		115,544			121,027
	Right of use assets, operating leases		231,269			233,415		Right of use assets, operating leases		204,189			210,398
	Goodwill		1,044,014			1,047,425		Goodwill		1,261,189			1,261,978
	Investments in and advances to unconsolidated joint ventures		65,716			68,620		Investments in and advances to unconsolidated joint ventures		76,017			68,975
	Intangible assets, net		237,028			259,858		Intangible assets, net		222,451			245,958
	Deferred tax assets		124,816			130,401		Deferred tax assets		143,022			130,200
	Other noncurrent assets		59,190			61,489		Other noncurrent assets		40,382			56,038
	Total assets	$	3,488,605		$	3,450,368		Total assets	$	3,865,001		$	3,937,704

Liabilities and Shareholders' Equity (Deficit)
Liabilities and Shareholders' Equity								Liabilities and Shareholders' Equity
Current liabilities:	Current liabilities:							Current liabilities:
	Accounts payable (including $89,974 and $85,869 Accounts payable of consolidated joint ventures)	$	235,381		$	216,613		Accounts payable (including $101,593 and $97,810 Accounts payable of consolidated joint ventures)	$	219,220		$	225,679
	Accrued expenses and other current liabilities (including $90,632 and $74,857 Accrued expenses and other current liabilities of consolidated joint ventures)		625,729			639,863		Accrued expenses and other current liabilities (including $75,606 and $68,801 Accrued expenses and other current liabilities of consolidated joint ventures)		595,058			650,753
	Contract liabilities (including $39,217 and $32,638 Contract liabilities of consolidated joint ventures)		241,178			230,681		Contract liabilities (including $35,744 and $33,922 Contract liabilities of consolidated joint ventures)		186,028			201,864
	Short-term lease liabilities, operating leases		47,217			49,994		Short-term lease liabilities, operating leases		54,113			54,133
	Income taxes payable		1,819			7,231		Income taxes payable		6,248			4,980
	Total current liabilities		1,151,324			1,144,382		Short-term debt		50,000			50,000
	Long-term employee incentives		21,458			56,928		Total current liabilities		1,110,667			1,187,409
	Long-term debt		314,401			249,353		Long-term employee incentives		21,218			21,828
	Long-term lease liabilities, operating leases		206,760			203,624		Long-term debt		590,346			539,998
	Deferred tax liabilities		9,234			9,621		Long-term lease liabilities, operating leases		175,584			182,467
	Other long-term liabilities		118,049			125,704		Deferred tax liabilities		13,146			12,285
	Total liabilities		1,821,226			1,789,612		Other long-term liabilities		113,598			132,300
								Total liabilities		2,024,559			2,076,287
Contingencies (Note 12)	Contingencies (Note 12)							Contingencies (Note 12)
Shareholders' equity (deficit):
Shareholders' equity:								Shareholders' equity:
	Common stock, $1 par value; authorized 1,000,000,000 shares; 146,440,701 and 146,440,701 shares issued; 22,271,174 and 21,772,888 public shares outstanding; 78,398,520 and 78,896,806 ESOP shares outstanding		146,441			146,441		Common stock, $1 par value; authorized 1,000,000,000 shares; 146,609,288 and 146,609,288 shares issued; 26,845,697 and 25,719,350 public shares outstanding; 75,560,749 and 76,641,312 ESOP shares outstanding		146,654			146,609
	Treasury stock, 45,771,008 shares at cost		(934,240	)		(934,240	)	Treasury stock, 44,248,626 shares at cost		(899,328	)		(899,328	)
	Additional paid-in capital		2,652,227			2,649,975		Additional paid-in capital		2,667,130			2,700,925
	Accumulated deficit		(206,052	)		(218,025	)	Accumulated deficit		(108,720	)		(120,569	)
	Accumulated other comprehensive loss		(23,114	)		(14,261	)	Accumulated other comprehensive loss		(8,937	)		(13,865	)
	Total Parsons Corporation shareholders' equity		1,635,262			1,629,890		Total Parsons Corporation shareholders' equity		1,796,799			1,813,772
	Noncontrolling interests		32,117			30,866		Noncontrolling interests		43,643			47,645
	Total shareholders' equity		1,667,379			1,660,756		Total shareholders' equity		1,840,442			1,861,417
	Total liabilities, redeemable common stock and shareholders' equity	$	3,488,605		$	3,450,368		Total liabilities and shareholders' equity	$	3,865,001		$	3,937,704

The accompanying notes are an integral part of these consolidated financial statements.

	For the Three Months Ended						For the Three Months Ended
	March 31, 2020			March 31, 2019			March 31, 2021			March 31, 2020
Revenue	$	970,993		$	904,405		$	874,697		$	970,993
Direct cost of contracts		769,632			714,237			669,082			769,632
Equity in earnings of unconsolidated joint ventures		6,114			10,397			7,530			6,114
Indirect, general and administrative expenses		183,774			177,519
Selling, general and administrative expenses								187,522			183,774
Operating income		23,701			23,046			25,623			23,701
Interest income		228			477			98			228
Interest expense		(4,022	)		(8,292	)		(4,541	)		(4,022	)
Other income (expense), net		(452	)		41			(1,791	)		(452	)
Total other income (expense)		(4,246	)		(7,774	)		(6,234	)		(4,246	)
Income before income tax expense		19,455			15,272			19,389			19,455
Income tax expense		(5,084	)		(1,886	)		(5,375	)		(5,084	)
Net income including noncontrolling interests		14,371			13,386			14,014			14,371
Net income attributable to noncontrolling interests		(1,398	)		(3,645	)		(4,975	)		(1,398	)
Net income attributable to Parsons Corporation	$	12,973		$	9,741		$	9,039		$	12,973
Earnings per share:
Basic	$	0.13		$	0.12		$	0.09		$	0.13
Diluted	$	0.13		$	0.12		$	0.09		$	0.13

The accompanying notes are an integral part of these consolidated financial statements.

	For the Three Months Ended						For the Three Months Ended
	March 31, 2020			March 31, 2019			March 31, 2021			March 31, 2020
Net income including noncontrolling interests	$	14,371		$	13,386		$	14,014		$	14,371
Other comprehensive income (loss), net of tax
Foreign currency translation adjustment, net of tax		(8,800	)		2,549			4,914			(8,800	)
Pension adjustments, net of tax		(61	)		9			19			(61	)
Comprehensive income including noncontrolling interests, net of tax		5,510			15,944			18,947			5,510
Comprehensive income attributable to noncontrolling interests, net of tax		(1,390	)		(3,645	)		(4,980	)		(1,390	)
Comprehensive income attributable to Parsons Corporation, net of tax	$	4,120		$	12,299		$	13,967		$	4,120

The accompanying notes are an integral part of these consolidated financial statements.

		For the Three Months Ended							For the Three Months Ended
		March 31, 2020			March 31, 2019				March 31, 2021			March 31, 2020
Cash flows from operating activities:	Cash flows from operating activities:							Cash flows from operating activities:
	Net income including noncontrolling interests	$	14,371		$	13,386
	Adjustments to reconcile net income to net cash used in operating activities							Net income including noncontrolling interests	$	14,014		$	14,371
	Depreciation and amortization		32,409			30,591		Adjustments to reconcile net income to net cash used in operating activities
	Amortization of debt issue costs		173			244		Depreciation and amortization		34,673			32,409
	Gain on disposal of property and equipment		(104	)		(27	)	Amortization of debt issue costs		665			173
	Provision for doubtful accounts		-			(279	)	Loss (gain) on disposal of property and equipment		267			(104	)
	Deferred taxes		5,514			1,486		Deferred taxes		403			5,514
	Foreign currency transaction gains and losses		1,383			618		Foreign currency transaction gains and losses		2,220			1,383
	Equity in earnings of unconsolidated joint ventures		(6,114	)		(10,397	)	Equity in earnings of unconsolidated joint ventures		(7,530	)		(6,114	)
	Return on investments in unconsolidated joint ventures		6,551			10,794		Return on investments in unconsolidated joint ventures		13,180			6,551
	Stock-based compensation		2,252			-		Stock-based compensation		7,206			2,252
	Contributions of treasury stock		14,871			12,250		Contributions of treasury stock		13,153			14,871
	Changes in assets and liabilities, net of acquisitions and newly consolidated joint ventures:							Changes in assets and liabilities, net of acquisitions and newly consolidated joint ventures:
	Accounts receivable		(91,734	)		(17,135	)	Accounts receivable		2,597			(91,734	)
	Contract assets		(52,346	)		(46,984	)	Contract assets		(31,711	)		(52,346	)
	Prepaid expenses and current assets		(3,766	)		(1,424	)	Prepaid expenses and other assets		(5,386	)		(3,766	)
	Accounts payable		19,788			(28,182	)	Accounts payable		(6,658	)		19,788
	Accrued expenses and other current liabilities		(24,336	)		(24,023	)	Accrued expenses and other current liabilities		(68,928	)		(24,336	)
	Contract liabilities		11,416			14,884		Contract liabilities		(16,086	)		11,416
	Income taxes		(6,212	)		(3,645	)	Income taxes		1,268			(6,212	)
	Other long-term liabilities		(43,099	)		(12,265	)	Other long-term liabilities		(19,312	)		(43,099	)
	Net cash used in operating activities		(118,983	)		(60,108	)	Net cash used in operating activities		(65,965	)		(118,983	)
Cash flows from investing activities:	Cash flows from investing activities:							Cash flows from investing activities:
	Capital expenditures		(12,637	)		(11,041	)	Capital expenditures		(4,449	)		(12,637	)
	Proceeds from sale of property and equipment		485			135		Proceeds from sale of property and equipment		164			485
	Payments for acquisitions, net of cash acquired		-			(287,482	)	Payments for acquisitions, net of cash acquired		1,064			0
	Investments in unconsolidated joint ventures		(50	)		(4,905	)	Investments in unconsolidated joint ventures		(22,240	)		(50	)
	Return of investments in unconsolidated joint ventures		-			2,234		Return of investments in unconsolidated joint ventures		116			0
	Net cash used in investing activities		(12,202	)		(301,059	)	Proceeds from sales of investments in unconsolidated joint ventures		14,300			0
								Net cash used in investing activities		(11,045	)		(12,202	)
Cash flows from financing activities:	Cash flows from financing activities:							Cash flows from financing activities:
	Proceeds from borrowings		131,500			290,000		Proceeds from borrowings under credit agreement		0			131,500
	Repayments of borrowings		(66,500	)		(60,000	)	Repayments of borrowings under credit agreement		0			(66,500	)
	Payments for debt costs and credit agreement		-			(286	)	Contributions by noncontrolling interests		7			221
	Contributions by noncontrolling interests		221			708		Distributions to noncontrolling interests		(8,989	)		(360	)
	Distributions to noncontrolling interests		(360	)		(18,986	)	Taxes paid on vested stock		(2,242	)		(1,149	)
	Purchase of treasury stock		-			(813	)	Net cash (used in) provided by financing activities		(11,224	)		63,712
	Taxes paid on vested stock		(1,149	)		-		Effect of exchange rate changes		430			(1,179	)
	Net cash provided by financing activities		63,712			210,623		Net decrease in cash, cash equivalents, and restricted cash		(87,804	)		(68,652	)
	Effect of exchange rate changes		(1,179	)		(182	)	Cash, cash equivalents and restricted cash:
	Net decrease in cash, cash equivalents, and restricted cash		(68,652	)		(150,726	)	Beginning of year		487,215			195,374
	Cash, cash equivalents and restricted cash:							End of period	$	399,411		$	126,722
	Beginning of year		195,374			281,195
	End of period	$	126,722		$	130,469

The accompanying notes are an integral part of these consolidated financial statements.

											Retained			Accumulated			Total																	Retained			Accumulated
	Redeemable								Additional		Earnings			Other			Parsons														Additional			Earnings			Other			Total
																										Common		Treasury			Paid-in			(Accumulated			Comprehensive			Parsons			Noncontrolling
																										Stock		Stock			Capital			Deficit)			Income (Loss)			Equity			Interests			Total
Balance at December 31, 2020																										$	146,609	$	(899,328	)	$	2,700,925		$	(120,569	)	$	(13,865	)	$	1,813,772		$	47,645		$	1,861,417
Comprehensive income
Net income																											-		-			-			9,039			-			9,039			4,975			14,014
Foreign currency translation gain, net																											-		-			-			-			4,909			4,909			5			4,914
Pension adjustments, net																											-		-			-			-			19			19			-			19
Adoption of ASU 2020-06																											-		-			(40,002	)		2,782			-			(37,220	)		-			(37,220	)
Contributions																											-		-			-			-			-			-			7			7
Distributions																											-		-			-			-			-			-			(8,989	)		(8,989	)
Issuance of equity securities, net of retirements																											45		-			(999	)		28			-			(926	)		-			(926	)
Stock-based compensation																											-		-			7,206			-			-			7,206			-			7,206
Balance at March 31, 2021																										$	146,654	$	(899,328	)	$	2,667,130		$	(108,720	)	$	(8,937	)	$	1,796,799		$	43,643		$	1,840,442
	Common			Common		Treasury			Paid-in		(Accumulated			Comprehensive			Equity			Noncontrolling
	Stock			Stock		Stock			Capital		Deficit)			Income (Loss)			(Deficit)			Interests			Total
Balance at December 31, 2019	$	-		$	146,441	$	(934,240	)	$	2,649,975	$	(218,025	)	$	(14,261	)	$	1,629,890		$	30,866		$	1,660,756		$	146,441	$	(934,240	)	$	2,649,975		$	(218,025	)	$	(14,261	)	$	1,629,890		$	30,866		$	1,660,756
Comprehensive income
Net income		-			-		-			-		12,973			-			12,973			1,398			14,371			-		-			-			12,973			-			12,973			1,398			14,371
Foreign currency translation gain, net		-			-		-			-		-			(8,792	)		(8,792	)		(8	)		(8,800	)		-		-			-			-			(8,792	)		(8,792	)		(8	)		(8,800	)
Pension adjustments, net		-			-		-			-		-			(61	)		(61	)		-			(61	)		-		-			-			-			(61	)		(61	)		-			(61	)
Adoption of ASU 2016-13		-			-		-			-		(1,000	)		-			(1,000	)		-			(1,000	)		-		-			-			(1,000	)		-			(1,000	)		-			(1,000	)
Contributions		-			-		-			-		-			-			-			221			221			-		-			-			-			-			-			221			221
Distributions		-			-		-			-		-			-			-			(360	)		(360	)		-		-			-			-			-			-			(360	)		(360	)
Stock-based compensation		-			-		-			2,252		-			-			2,252			-			2,252			-		-			2,252			-			-			2,252			-			2,252
Balance at March 31, 2020	$	-		$	146,441	$	(934,240	)	$	2,652,227	$	(206,052	)	$	(23,114	)	$	1,635,262		$	32,117		$	1,667,379		$	146,441	$	(934,240	)	$	2,652,227		$	(206,052	)	$	(23,114	)	$	1,635,262		$	32,117		$	1,667,379


Balance at December 31, 2018	$	1,876,309		$	-	$	(957,025	)	$	-	$	12,445		$	(22,957	)	$	(967,537	)	$	46,461		$	(921,076	)
Comprehensive income
Net income		-			-		-			-		9,741			-			9,741			3,645			13,386
Foreign currency translation gain, net		-			-		-			-		-			2,547			2,547			-			2,547
Pension adjustments, net		-			-		-			-		-			9			9			-			9
ASC 842 transition adjustment		-			-		-			-		52,608			-			52,608			-			52,608
Purchase of treasury stock		(813	)		-		(813	)		-		813			-			-			-			-
Contributions		-			-		-			-		-			-			-			708			708
Distributions		(164	)		-		-			-		164			-			164			(18,986	)		(18,822	)
Balance at March 31, 2019	$	1,875,332		$	-	$	(957,838	)	$	-	$	75,771		$	(20,401	)	$	(902,468	)	$	31,828		$	(870,640	)

The accompanying notes are an integral part of these consolidated financial statements.

Parsons Corporation, a Delaware corporation, and its subsidiaries (collectively, the “Company”) is a leading provider of technology-driven solutions in the defense, intelligence and critical infrastructure markets. We provide software and hardware products, technical services and integrated solutions to support our customers’ missions. We have developed significant expertise and differentiated capabilities in key areas of cybersecurity, intelligence, missile defense, C5ISR, space, geospatial, and connected communities. By combining our talented team of professionals and advanced technology, we help solve complex technical challenges to enable a safer, smarter and more interconnected world.

On May 8, 2019, the Company consummated its initial public offering (“IPO”) whereby the Company sold 18,518,500 shares of common stock for $27.00 per share. The underwriters exercised their option on May 14, 2019 to purchase an additional 2,777,775 shares at the net price of $25.515 which was the IPO share price of $27.00 less the underwriting discount of $1.485 per share. The net proceeds of the IPO and the underwriters’ option were $536.9 million, after deducting underwriting discounts and other fees, and were used to fund an IPO dividend of $52.1 million, repay the outstanding balance of $150.0 million under our Term Loan, and repay outstanding indebtedness under our Revolving Credit Facility.

On April 15, 2019, the board of directors of the Company declared a common stock dividend in a ratio of 2 shares of common stock for every one share of common stock presently held by the Company’s stockholder (the “Stock Dividend”). The record date of this common Stock Dividend was May 7, 2019, the day immediately prior to the consummation of the Company’s IPO on May 8, 2019, and the payment date of the Stock Dividend was May 8, 2019. Purchasers of the Company’s common stock in the Company’s public offering were not entitled to receive any portion of the Stock Dividend.

The accompanying unaudited consolidated financial statements and related notes of the Company have been prepared in accordance with generally accepted accounting principles in the United States of America ("GAAP") and pursuant to the interim period reporting requirements of Form 10-Q. They do not include all of the information and footnotes required by GAAP for complete financial statements and, therefore, should be read in conjunction with our consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, ~~2019.~~2020.

In the opinion of management, the consolidated financial statements reflect all normal recurring adjustments necessary for a fair statement of the financial position, results of operations and cash flows for the interim periods presented. The results of operations and cash flows for any interim period are not necessarily indicative of results for the full year or for future years.

This Quarterly Report on Form 10-Q ~~include~~includes the accounts of Parsons Corporation and its subsidiaries and affiliates ~~with~~which it controls. Interests in joint ventures that are controlled by the Company, or for which the Company is otherwise deemed to be the primary beneficiary, are consolidated. For joint ventures in which the Company does not have a controlling interest, but exerts a significant influence, the Company applies the equity method of ~~accounting.~~accounting (see “Note 14 – Investments in and Advances to Joint Ventures" for further discussion). Intercompany accounts and transactions are eliminated in consolidation.

The preparation of the consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual amounts could differ from those estimates. The Company’s most significant estimates and judgments involve revenue recognition with respect to the determination of the costs to complete contracts and transaction price; determination of self-insurance reserves; useful lives of property and equipment and intangible assets; calculation of allowance for doubtful accounts; valuation of deferred income tax assets and uncertain tax positions, among others. Please see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates” and “Note 2—Summary of Significant Accounting Polices” in the notes to our consolidated financial statements included in the Company’s Form 10-K for the year ended December 31, ~~2019,~~2020, for a discussion of the significant estimates and assumptions affecting our consolidated financial statements. Estimates of costs to complete contracts are continually evaluated as work progresses and are revised when necessary. When a change in estimate is determined to have an impact on contract profit, the Company records a positive or negative adjustment to the consolidated statement of income.

During the second quarter of fiscal 2020, initial purchases of the Company’s common Stock were made under the Parsons Employee Stock Purchase Program (“ESPP”). Under the ESPP, eligible employees who elect to participate are granted the right to purchase shares of the common stock of Parsons at a discount that is limited to 5% of the per-share market value on the day shares are sold to employees. Purchases of common stock under the ESPP are included in

“proceeds from issuance of common stock” in cash flows from financing activities in the Consolidated Statements of Cash Flows.

In the first quarter of ~~2020,~~2021, the Company early adopted Accounting Standards Update (“ASU”) ~~2016-13, “Measurement~~ASU 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40) (“ASU 2020-06)”. The update simplifies the accounting for convertible debt instruments and convertible preferred stock by reducing the number of ~~Credit Losses on Financial Instruments.”~~accounting models and limiting the number of embedded conversion features separately recognized from the primary contract. The ~~amendments~~guidance also includes targeted improvements to the disclosures for convertible instruments and earnings per share. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. Early adoption is permitted, but no earlier than fiscal years beginning after December 15, 2020. The Company adopted ASU 2020-06 in ~~ASU 2016-13 replace~~ the ~~incurred loss impairment methodology~~first quarter of 2021 using the modified retrospective method which resulted in ~~current practice with~~ a ~~methodology that reflects expected credit losses~~reduction in non-cash interest expense and ~~requires consideration~~reclassification of ~~a broader range~~the equity portion of ~~reasonable and supportable information~~the Convertible Senior Notes to ~~estimate credit losses. The adoption of ASU 2016-13 did not have a material impact~~“Long-term debt” on the ~~Company’s~~ consolidated ~~financial statements.~~balance sheet.

In ~~December 2019,~~ the ~~Financial Accounting Standards Board (“FASB”) issued~~first quarter of 2021, the Company adopted ASU No. 2019-12, ~~Income~~“Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”)”. ASU 2019-12 was issued as a means to reduce the complexity of accounting for income ~~taxes for those entities that fall within the scope of the standard.~~taxes. The guidance is to be applied using a prospective method, excluding amendments related to franchise taxes, which should be applied on either a retrospective basis for all periods presented or a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption. ~~ASU 2019-12 is effective for fiscal years beginning after December 15, 2020, with early~~The adoption ~~permitted. The Company is evaluating the impact~~ of ASU 2019-12 did not have a material impact on ~~its~~the consolidated financial statements.

In the first quarter of 2020, the Company adopted ASU 2016-13, “Measurement of Credit Losses on Financial Instruments.” The amendments in ASU 2016-13 replaced the incurred loss impairment methodology in current practice with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to estimate credit losses. The adoption of ASU 2016-13 did not have a material impact on the consolidated financial statements.

On ~~January 7, 2019,~~November 19, 2020, the Company acquired a 100% ownership interest in ~~OGSystems,~~Braxton Science & Technology Group (“Braxton”), a privately-owned company, for ~~$292.4~~$308.8 million ~~paid~~ in cash. ~~OGSystems provides geospatial intelligence, big data analytics~~Braxton operates at the forefront of satellite operations, ground system automation, flight dynamics, and ~~threat mitigation~~spacecraft and antenna simulation for ~~defense~~the U.S. Department of Defense and ~~intelligence customers.~~Intelligence Community. The ~~Company borrowed $110 million under the Credit Agreement and $150 million~~acquisition was entirely funded by cash on ~~a short-term loan,~~hand in August 2020, as described in “Note ~~10—~~12—Debt and Credit ~~Facilities,” to partially fund the acquisition.~~Facilities”. In connection with this acquisition, the Company recognized~~$5.4~~ $0.6 million of acquisition-related ~~expenses in “Indirect,~~“Selling, general and administrative expense” in the consolidated statements of income for the ~~year~~three months ended ~~December~~March 31, ~~2019,~~2021, including legal fees, consulting fees, and other miscellaneous direct expenses associated with the acquisition. ~~OGSystems enhances~~Braxton allows Parsons to capitalize on the ~~Company’s artificial intelligence~~quickly evolving space missions of its national security space customers and ~~data analytics expertise with new technologies~~address rapid market growth driven by proliferated low earth orbit constellations, small satellite expansion, and solutions. Customers of both companies will benefit from existing, complementary technologies and increased scale, enabling end-to-end solutions under the shared vision of rapid prototyping and agile development.space cyber resiliency.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed based on the purchase price allocation as of the date of acquisition (in thousands):

Of the total purchase price, the following values were assigned to intangible assets (in thousands, except for years):

	Gross Carrying Amount		Amortization Period		Gross Carrying Amount		Amortization Period
			(in years)				(in years)
Customer relationships	$	57,100		5	$	34,100	12
Backlog		27,700		3		38,200	3
Trade name		3,800		2
Developed technologies						2,000	6
Non-compete agreements		2,400		3		650	3
Developed technologies	$	1,300		3

Amortization expense of ~~$5.9~~$4.1 million related to these intangible assets was recorded for ~~both~~ the three months ended March 31, ~~2020 and March 31, 2019.~~ 2021.The entire value of goodwill ~~of $183.5 million~~ was assigned to the Federal Solutions reporting unit and represents synergies expected to be realized from this business combination. Goodwill of ~~$16~~$196.3 million is deductible for tax purposes.

The amount of revenue generated by ~~OGSystems~~Braxton and included within consolidated revenues is ~~$33.2~~$31.0 million ~~and $29.0 million~~ for the three months ended March 31, ~~2020 and March 31, 2019, respectively.~~ 2021.The Company has determined that the presentation of net income from the date of acquisition is impracticable due to the integration of general corporate functions upon acquisition.

Supplemental information of unaudited pro forma operating results assuming the OGSystems acquisition had been consummated as of the beginning of fiscal year 2018 (December 30, 2017) (in thousands) is as follows:

On July 31, 2019 the Company acquired a 100% ownership interest in QRC Technologies (“QRC”), a privately-owned company, for $214.1 million in cash. QRC provides design and development of open-architecture radio-frequency products. The Company borrowed $140.0 million under the Revolving Credit Facility to partially fund the transaction. In connection with this acquisition, the Company recognized $4.9 million of acquisition-related expenses in “Indirect, general and administrative expense” in the consolidated statements of income for the fiscal year ended December 31, 2019, including legal fees, consulting fees, and other miscellaneous direct expenses associated with the acquisition. QRC is an agile, disruptive product company that specializes in radio frequency spectrum survey, record and playback; signals intelligence; and electronic warfare missions. QRC complements our existing portfolio, increases our presence in the high-growth markets of spectrum awareness and surveillance, and adds critical intellectual property that complements and expands the Company’s available capabilities for the Special Operations and Intelligence Communities.

~~The following table summarizes the estimated fair values of the assets acquired and liabilities assumed based on the preliminary purchase price allocation as of the date of acquisition (in thousands):~~

~~Of the total purchase price, the following values were assigned to intangible assets (in thousands, except for years):~~

The Company is still in the process of finalizing its valuation of the net assets acquired.

Amortization expense of $3.6 million related to these intangible assets was recorded for the three months ended March 31, 2020. The entire value of goodwill of $125.1 million was assigned to the Federal Solutions reporting unit and represents synergies expected to be realized from this business combination. Goodwill in its entirety is deductible for tax purposes.

The amount of revenue generated by QRC and included within consolidated revenues for the three months ended March 31, 2020 is $4.4 million. The Company has determined that the presentation of net income from the date of acquisition is impracticable due to the integration of general corporate functions upon acquisition.

Supplemental information ~~on an~~of unaudited pro forma ~~basis,~~operating results assuming the ~~QRC Technologies~~Braxton acquisition had been consummated as of the beginning of fiscal year ~~2018 (December 30, 2017)~~2019 (in thousands) is as follows:

The Company’s contracts contain both fixed-price and cost reimbursable components. Contract types are based on the component that represents the majority of the contract. The following table presents revenue disaggregated by contract type (in thousands):

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Fixed-Price	$	308,308	$	257,695	$	229,942	$	308,308
Time-and-Materials		252,439		255,706		239,665		252,439
Cost-Plus		410,246		391,004		405,090		410,246
Total	$	970,993	$	904,405	$	874,697	$	970,993

See “Note 18 – Segments Information” for the Company’s revenues by business lines.

Contract assets and contract liabilities balances at March 31, ~~2020~~2021 and December 31, ~~2019~~2020 were as follows (in thousands):

	March 31, 2020		December 31, 2019		March 31, 2021		December 31, 2020
Contract assets	$	626,513	$	575,089	$	607,676	$	576,568
Contract liabilities		241,178		230,681		186,028		201,864
Net contract assets (liabilities) (1)	$	385,335	$	344,408	$	421,648	$	374,704

During the three months ended March 31, ~~2020~~2021 and March 31, ~~2019,~~2020, the Company recognized revenue of ~~$94.3~~$69.1 million and~~$85.7~~ $94.3 million, respectively that was included in the corresponding contract liability ~~balance~~balances at December 31, ~~2019~~2020 and December 31, ~~2018,~~2019, respectively. ~~The~~Certain changes in contract assets and contract liabilities ~~were~~consisted of the ~~result of normal business activity and not significantly impacted by other factors, except as follows:~~following:

	March 31, 2020		December 31, 2019		March 31, 2021		December 31, 2020
Acquired contract assets	$	-	$	9,747	$	-	$	8,350
Acquired contract liabilities		-		1,300		-		300
Change in the estimate of variable consideration		-		12,166

There was 0 significant impairment of contract assets recognized during the three months ended March 31, ~~2020~~2021 and March 31, ~~2019.~~2020.

There were 0 amounts due to revisions in estimates, such as changes in estimated claims or incentives, related to performance obligations partially satisfied in previous periods that individually had an impact of $5 million or more on revenue during the three months ended March 31, ~~2020~~2021 and March 31, ~~2019.~~2020.

Accounts receivable, net consisted of the following as of March 31, ~~2020~~2021 and December 31, ~~2019~~2020 (in thousands):

	March 31, 2020			December 31, 2019			2021			2020
Billed	$	544,444		$	475,528		$	521,031		$	512,357
Unbilled		220,278			201,461			176,552			190,222
Total accounts receivable, gross		764,722			676,989			697,583			702,579
Allowance for doubtful accounts		(6,497	)		(5,497	)		(3,999	)		(4,001	)
Total accounts receivable, net	$	758,225		$	671,492		$	693,584		$	698,578

Billed accounts receivable represents amounts billed to clients that have not been collected. Unbilled accounts receivable represents amounts where the Company has a present contractual right to bill but an invoice has not been issued to the customer at the period-end date.

In connection with the adoption of ASU 2016-13, we have modified the historical presentation of gross receivables and the allowance for doubtful accounts to reflect only expected credit losses in the allowance in conformity with the current period presentation.

The allowance for doubtful accounts was determined based on consideration of trends in actual and forecasted credit quality of clients, including delinquency and payment history, type of client, such as a government agency or commercial sector client, and general economic conditions and particular industry conditions that may affect a client’s ability to pay. COVID-19 Impacts: We have not seen and do not expect there to be a risk of non-payment ~~with~~from either our government agency ~~customers, but there is likely~~or commercial customers. We have experienced payment delays due to ~~be a delay in payments~~administrative limitations from ~~our government agency customers in the Middle East. We generally don’t expect there to be a risk~~both types of ~~non-payment from our commercial sector clients but do anticipate an unknown level of payment delays.~~customers.

Transaction Price Allocated to the Remaining Unsatisfied Performance Obligations

The Company’s remaining unsatisfied performance obligations (“RUPO”) as of March 31, ~~2020~~2021 represent a measure of the total dollar value of work to be performed on contracts awarded and in-progress. The Company had $5.1 billion in RUPO as of March 31, ~~2020.~~2021.

RUPO will increase with awards of new contracts and decrease as the Company performs work and recognizes revenue on existing contracts. Projects are included within RUPO at such time the project is awarded and agreement on contract terms has been reached. The difference between RUPO and backlog relates to unexercised option years that are included within backlog and the value of Indefinite Delivery/Indefinite Quantity (“IDIQ”) contracts included in backlog for which delivery orders have not been issued.

RUPO is comprised of: (a) original transaction price, (b) change orders for which written confirmations from our customers have been received, (c) pending change orders for which the Company expects to receive confirmations in the ordinary course of business, and (d) claim amounts that the Company has made against customers for which it has determined that it has a legal basis under existing contractual arrangements and a significant reversal of revenue is not probable, less revenue recognized to-date.

The Company expects to satisfy its RUPO as of March 31, ~~2020~~2021 over the following periods (in thousands):

Period RUPO Will Be Satisfied	Within One Year		Within One to Two Years		Thereafter		Within One Year		Within One to Two Years		Thereafter
Federal Solutions	$	1,319,438	$	550,073	$	315,965	$	1,096,552	$	493,388	$	376,121
Critical Infrastructure		1,691,579		533,120		713,875		1,590,691		603,192		980,126
Total	$	3,011,017	$	1,083,193	$	1,029,840	$	2,687,243	$	1,096,580	$	1,356,247

The Company has operating and finance leases for corporate and project office spaces, vehicles, heavy machinery and office equipment. Our leases have remaining lease terms of one year to 119 years, some of which may include options to extend the leases for up to ~~seven~~five years, and some of which may include options to terminate the leases up to the ~~eighth~~third year.

The components of lease costs for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 are as follows (in thousands):

	Three Months Ended						Three Months Ended
	March 31, 2020			March 31, 2019			March 31, 2021			March 31, 2020
Operating lease cost	$	17,271		$	18,285		$	16,361		$	17,271
Short-term lease cost		3,651			2,004			2,032			3,651
Amortization of right-of-use assets		254			225			474			254
Interest on lease liabilities		12			16			29			12
Sublease income		(880	)		(930	)		(776	)		(880	)
Total lease cost	$	20,308		$	19,600		$	18,120		$	20,308

Supplemental cash flow information related to leases for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019 are~~2020 is as follows (in thousands):

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Operating cash flows for operating leases	$	16,420	$	18,333	$	16,627	$	16,420
Operating cash flows for financing activities		25		16
Operating cash flows for finance leases						30		25
Financing cash flows from finance leases		278		246		480		278
Right-of-use assets obtained in exchange for new operating lease liabilities		15,106		249,848		4,865		15,106
Right-of-use assets obtained in exchange for new finance lease liabilities	$	-	$	1,341	$	619	$	0

Supplemental balance sheet and other information related to leases as of March 31, ~~2020~~2021 and December 31, ~~2019~~2020 are as follows (in thousands):

	March 31, 2020			December 31, 2019			March 31, 2021			December 31, 2020
Operating Leases:
Right-of-use assets	$	231,269		$	233,415		$	204,189		$	210,398
Lease liabilities:
Current	$	47,217		$	49,994		$	54,113		$	54,133
Long-term		206,760			203,624			175,584			182,467
Total operating lease liabilities	$	253,977		$	253,618		$	229,697		$	236,600
Finance Leases:
Other noncurrent assets	$	2,123		$	2,377		$	3,526		$	3,363
Accrued expenses and other current liabilities	$	1,056		$	1,075		$	1,596		$	1,461
Other long-term liabilities	$	943		$	1,202		$	1,740		$	1,733

Weighted Average Remaining Lease Term:
Operating leases	6 years			6 years			4.8 years			5 years
Finance leases	2 years			3 years			2.5 years			3 years
Weighted Average Discount Rate:
Operating leases		3.9	%		4.0	%		3.6	%		3.7	%
Finance leases		4.5	%		4.5	%		3.3	%		3.8	%

As of March 31, ~~2020,~~2021, the Company has ~~additional~~0 operating leases ~~primarily for office spaces,~~ that have not yet ~~commenced of $2.8 million. These operating leases will commence in 2020 with lease terms of 3 years to 6 years.~~commenced.

A maturity analysis of the future undiscounted cash flows associated with the Company’s operating and finance lease liabilities as of March 31, ~~2020~~2021 is as follows (in thousands):

	Operating Leases			Finance Leases			Operating Leases			Finance Leases
2020	$	40,845		$	850
2021		57,697			870
2021 (remaining)							$	46,223		$	1,314
2022		51,705			326			56,945			1,240
2023		44,759			48			49,438			605
2024		34,445			-			39,044			212
2025								28,543			87
Thereafter		53,434			-			29,952			0
Total lease payments		282,885			2,094			250,145			3,458
Less: imputed interest		(28,908	)		(95	)		(20,448	)		(122	)
Total present value of lease liabilities	$	253,977		$	1,999		$	229,697		$	3,336

Rental expense for the three months ended March 31, 2020 and March 31, 2019 was $20.9 million and $20.3 million, respectively and is recorded in “Indirect, general and administrative expenses” in the consolidated statements of income.

The following table summarizes the changes in the carrying value of goodwill by reporting segment atfrom December 31, 2020 to March 31, ~~2020 and December 31, 2019~~2021 (in thousands):

	December 31, 2019		Foreign Exchange			March 31, 2020		December 31, 2020		Acquisitions			Foreign Exchange		March 31, 2021
Federal Solutions	$	975,405	$	-		$	975,405	$	1,188,882	$	(1,953	)	$	-	$	1,186,929
Critical Infrastructure		72,020		(3,411	)		68,609		73,096		-			1,164		74,260
Total	$	1,047,425	$	(3,411	)	$	1,044,014	$	1,261,978	$	(1,953	)	$	1,164	$	1,261,189

The ultimate impact from the COVID-19 pandemic is difficult to predict. While many uncertainties exist, we currently anticipate no material change in our financial condition or results of operations. Although the Company does not anticipate a material change to our financial condition or results of operations, the Company ~~reassessed~~performed a qualitative triggering analysis and determined there was no triggering event indicating a potential impairment to the carrying value of its goodwill at March 31, ~~2020~~2021 and concluded there has 0t been an impairment.

The gross amount and accumulated amortization of intangible assets with finite useful lives included in “Intangible assets, net” on the consolidated balance sheets are as follows (in thousands except for years):

	March 31, 2020							December 31, 2019							Weighted Average		March 31, 2021							December 31, 2020							Weighted Average
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Amortization Period (in years)		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Amortization Period (in years)
Backlog	$	109,255	$	(91,704	)	$	17,551	$	109,255	$	(87,510	)	$	21,745		3	$	147,456	$	(106,573	)	$	40,883	$	145,855	$	(101,038	)	$	44,817		3
Customer relationships		228,529		(78,533	)		149,996		228,529		(67,809	)		160,720		7		262,830		(122,265	)		140,565		264,129		(110,450	)		153,679		8
Leases		670		(585	)		85		670		(580	)		90		5		670		(604	)		66		670		(599	)		71		5
Developed technology		110,939		(47,799	)		63,140		110,939		(40,749	)		70,190		4		112,939		(75,887	)		37,052		112,039		(68,968	)		43,071		4
Trade name		8,200		(6,242	)		1,958		8,200		(5,667	)		2,533		1		8,200		(8,067	)		133		8,200		(7,967	)		233		1
Non-compete agreements		3,600		(1,200	)		2,400		3,600		(925	)		2,675		3		4,250		(2,372	)		1,878		4,250		(2,043	)		2,207		3
In process research and development		1,800					1,800		1,800		-			1,800	n/a			1,800		-			1,800		1,800		0			1,800	n/a
Other intangibles		275		(177	)		98		275		(170	)		105		10		275		(201	)		74		275		(195	)		80		10
Total intangible assets	$	463,268	$	(226,240	)	$	237,028	$	463,268	$	(203,410	)	$	259,858			$	538,420	$	(315,969	)	$	222,451	$	537,218	$	(291,260	)	$	245,958

The aggregate amortization expense of intangible assets for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 was ~~$22.7~~$24.5 million and ~~$21.0~~$22.7 million, respectively.

Estimated amortization expense for the remainder of the current fiscal year and in each of the next four years and beyond is as follows (in thousands):

	March 31, 2020		March 31, 2021
2020 (remaining)	$	64,042
2021		81,527	$	73,531
2022		35,864		51,972
2023		23,549		38,595
2024		9,098		12,273
2025				9,713
Thereafter		21,147		34,567
Total	$	235,227	$	220,651

Property and equipment consisted of the following at March 31, ~~2020~~2021 and December 31, ~~2019~~2020 (in thousands):

	March 31, 2020			December 31, 2019			Useful lives (years)	March 31, 2021			December 31, 2020			Useful life (years)
Buildings and leasehold improvements	$	88,781		$	81,065		1-15	$	96,645		$	98,151		1-15
Furniture and equipment		88,667			91,720		3-10		88,674			91,036		3-10
Computer systems and equipment		166,178			164,161		3-10		163,433			160,305		3-10
Construction equipment		11,626			11,765		5-7		8,899			8,920		5-7
Construction in progress									6,878			9,202
		355,252			348,711				364,529			367,614
Accumulated depreciation		(230,652	)		(225,960	)			(248,985	)		(246,587	)
Property and equipment, net	$	124,600		$	122,751			$	115,544		$	121,027

Depreciation expense for both the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 was $9.6 ~~million and $9.7 million, respectively.~~million.

							March 31, 2021			December 31, 2020
Short-Term:
Senior notes							$	50,000		$	50,000
Total Short-Term								50,000			50,000
Long-Term:	March 31, 2020			December 31, 2019
Revolving credit facility	$	65,000		$	-
Senior notes		250,000			250,000			200,000			200,000
Convertible senior notes								400,000			400,000
Debt discount								-			(51,138	)
Debt issuance costs		(599	)		(647	)		(9,654	)		(8,864	)
Total long-term	$	314,401		$	249,353			590,346			539,998
Total Debt							$	640,346		$	589,998

In November 2017, the Company entered into an amended and restated Credit Agreement. The Company incurred $2.0 million of costs in connection with this amendment. Under the agreement, the Company’s revolving credit facility was increased from $500 million to $550 million and the term of the agreement was extended through November 2022. The borrowings under the Credit Agreement bear interest, at the Company’s option, at either the Base Rate (as defined in the Credit Agreement), plus an applicable margin, or LIBOR plus an applicable margin. The applicable margin for Base Rate loans is a range of 0.125% to 1.00% and the applicable margin for LIBOR loans is a range of 1.125% to 2.00%, both based on the leverage ratio of the Company at the end of each fiscal quarter. The rates aton March 31, ~~2020~~2021 and December 31, ~~2019~~2020 were ~~1.90%~~1.86% and ~~3.02%~~1.87%, respectively. Borrowings under this Credit Agreement are guaranteed by certain ~~of the Company’s~~

Company operating subsidiaries. Letters of credit commitments outstanding under this agreement aggregated to ~~$44.9~~$45.3 million and ~~$43.7~~$44.9 million at March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, respectively, which reduced borrowing limits available to the Company. Interest expense related to the ~~credit agreement~~Credit Agreement was ~~$0.3~~$0.1 million and ~~$3.4~~$0.3 million for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019, respectively.~~2020, respectively. There were 0 loan amounts outstanding under the Credit Agreement on March 31, 2021.

On July 1, 2014, the Company finalized a private placement whereby the Company raised an aggregate amount of $250.0 million in debt as follows (in thousands):

The Company incurred $1.1 million of debt issuance costs in connection with the private placement. On August 10, 2018, the Company finalized an amended and restated intercreditor agreement related to this private placement to more closely align certain covenants and definitions with the terms under the 2017 amended and restated Credit Agreement and incurred $0.5 million of additional issuance costs. These costs are presented as a direct deduction from the debt on the face of the consolidated balance sheets. Interest expense related to the Senior Notes for both the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 was ~~$3.1 million,respectively.~~$3.2 million. The amortization of debt issuance costs and interest expense ~~are~~is recorded in “Interest expense” on the consolidated statements of income. The Company made interest payments ~~related to the Senior Notes~~of $6.2 million for both the three months ended March 31, ~~2020~~2021 and March 31, ~~2019 of $6.2 million,~~2020, respectively. ~~respectively.~~ Interest payable of ~~$2.6~~$2.4 million and ~~$5.7~~$2.6 million is recorded in “Accrued expenses and other current liabilities” on the consolidated balance sheets aton March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, respectively, related to the Senior Notes.

The Credit Agreement and private placement includes various covenants, including restrictions on indebtedness, liens, acquisitions, investments or dispositions, payment of dividends and maintenance of certain financial ratios and conditions. The Company was in compliance with these covenants at March 31, ~~2020~~2021 and December 31, ~~2019.~~2020.

The Company also has in place several secondary bank credit lines for issuing letters of credit, principally for foreign contracts, to support performance and completion guarantees. Letters of credit commitments outstanding under these bank lines aggregated ~~$193.5~~$203.9 million and ~~$197.3~~$193.1 million at March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, respectively.

Using a discounted cash flow technique that incorporates a market interest yield curve with adjustments for duration, optionality, and risk profile, the Company estimated the fair value (Level 2) of its ~~senior notes~~Senior Notes at March 31, ~~2020~~2021 approximates ~~$263.9~~$270.5 million.See “Note 16 – Fair Value of Financial Instruments” for the definition of Level 2 of the fair value hierarchy.

In ~~January 2019,~~August 2020, the Company ~~borrowed $150.0~~issued an aggregate $400.0 million of 0.25% Convertible Senior Notes due 2025, including the exercise of a $50.0 million initial purchasers’ option. The Company received proceeds from the issuance and sale of the Convertible Senior Notes of $389.7 million, net of $10.3 million of transaction fees and other third-party offering expenses. The Convertible Senior Notes accrue interest at a rate of 0.25% per annum, payable semi-annually on February 15 and August 15 of each year beginning on February 15, 2021, and will mature on August 15, 2025, unless earlier repurchased, redeemed or converted.

The Convertible Senior Notes are the Company’s senior unsecured obligations and will rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the Notes; equal in right of payment to any of the Company’s unsecured indebtedness that is not so subordinated; effectively junior in right of payment to any of the Company’s secured indebtedness, to the extent of the value of the assets securing such indebtedness; and structurally junior to all indebtedness and other liabilities (including trade payables) of the Company’s subsidiaries

Each $1,000 of principal of the Notes will initially be convertible into 22.2913 shares of our common stock, which is equivalent to an initial conversion price of $44.86 per share, subject to adjustment upon the occurrence of specified events. On or after March 15, 2025 until the close of business on the second scheduled trading day immediately

preceding the maturity date of the Convertible Senior Notes, holders may convert all or a portion of their Convertible Senior Notes, regardless of the conditions below.

Prior to the close of business on the business day immediately preceding March 15, 2025, the Notes will be convertible at the option of the holders thereof only under ~~our Term Loan Agreement~~the following circumstances:

The Company may redeem all or any portion of the Convertible Senior Notes for cash, at its option, on or after August 21, 2023 and before the 51^st scheduled trading day immediately before the maturity date at a redemption price equal to ~~partially finance~~100% of the ~~OGSystems acquisition. On May 10, 2019,~~principal amount of the Notes to be redeemed, plus accrued and unpaid interest, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price for a specified period of time. In addition, calling any Convertible Senior Note for redemption will constitute a Make-Whole Fundamental Change with respect to that Convertible Senior Note, in which case the conversion rate applicable to the conversion of that Convertible Senior Note will be increased in certain circumstances if it is converted after it is called for redemption.

Upon the occurrence of a fundamental change prior to the maturity date of the Convertible Senior Notes, holders of the Convertible Senior Notes may require the Company ~~used~~to repurchase all or a portion of the Convertible Senior Notes for cash at a price equal to 100% of the principal amount of the Convertible Senior Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date.

Upon conversion, the Company may settle the Convertible Senior Notes for cash, shares of the Company’s common stock, or a combination thereof, at the Company’s option. If the Company satisfies its conversion obligation solely in cash or through payment and delivery of a combination of cash and shares of the Company’s common stock, the amount of cash and shares of common stock due upon conversion will be based on a daily conversion value calculated on a proportionate basis for each trading day in a 50-trading day observation period.

Under existing GAAP at the time of issuance during 2020, convertible debt instruments that may be settled in cash on conversion are required to be separated into liability and equity components in a manner that reflects the issuer’s non-convertible debt borrowing rate. The carrying amount of the liability component is based on the fair value of a similar instrument that does not contain an equity conversion option. The carrying amount allocated to the equity component, which is recognized as a debt discount, represents the difference between the proceeds from ~~its May 8, 2019 IPO~~the issuance of the notes and the fair value of the liability component of the notes. Based on this debt to ~~repay~~equity ratio, debt issuance costs are then allocated to the ~~$150.0~~liability and equity components in a similar manner. Accordingly, at issuance the Company allocated $336.1 million ~~outstanding~~to the debt liability and $53.6 million to additional paid-in capital. The difference between the principal amount of the Convertible Senior Notes and the liability component, inclusive of issuance costs, represents the debt discount, which the Company amortized to interest expense over the term of the Convertible Senior Notes using an effective interest rate of 3.25%. During the year ended December 31, 2020, the Company recognized interest expense of $4.4 million. As of December 31, 2020, the net carrying value of the Notes was $340.6 million.

In the first quarter of 2021, the Company early adopted ASU 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Equity’s Own Equity (Subtopic 815-40). The Company used the modified retrospective method which resulted in a reduction in non-cash interest expense and reclassification of equity component of the convertible senior notes of $55.0 million and equity component of the debt issuance costs of $1.4 million to liabilities on the consolidated balance ~~under~~sheet. The Company also adjusted the ~~Term Loan~~carrying

amount of the convertible senior notes to what it would have been if the Company had applied the amendments from the inception of the Notes and ~~this loan~~recorded the offset of the carrying amount adjustment of $3.7 million in retained earnings on January 1, 2021. During the year ended March 31, 2021, the Company recognized interest expense of $0.6 million. As of March 31, 2021, the carrying value of the Notes was $400.0 million.

In connection with the sale of the Convertible Senior Notes, the Company purchased a bond hedge designed to mitigate the potential dilution from the conversion of the Convertible Senior Notes. Under the five-year term of the bond hedge, upon a conversion of the bonds, the Company will receive the number of shares of common stock equal to the remaining common stock deliverable upon conversion of the Convertible Senior Notes if the conversion value exceeds the principal amount of the Notes. The aggregate number of shares that the Company could be obligated to issue upon conversion of the Convertible Senior Notes is ~~now closed. Interest expense~~approximately 8.9 million shares. The cost of the convertible note hedge transactions was $55.0 million.

The cost of the convertible note hedge was partially offset by the Company’s sale of warrants to acquire approximately 8.9 million shares of the Company’s common stock. The warrants were initially exercisable at a price of at least $66.46 per share and are subject to customary adjustments upon the occurrence of certain events, such as the payment of dividends. The Company received $13.8 million in cash proceeds from the sales of these warrants.

The bond hedge and warrant transactions effectively increased the conversion price associated with the Convertible Senior Notes during the term of these transactions from 35%, or $44.86, to 100%, or $66.46, at their issuance, thereby reducing the dilutive economic effect to shareholders upon actual conversion.

The bond hedges and warrants are indexed to, and potentially settled in, shares of the Company’s common stock. The net cost of $41.2 million for the purchase of the bond hedges and sale of the warrants was recorded as a reduction to additional paid-in capital in the consolidated balance sheets.

At issuance, the Company recorded a deferred tax liability of $16.2 million related to the ~~Term Loan was$1.4~~Convertible Senior Notes debt discount and the capitalized debt issuance costs. The Company also recorded a deferred tax asset of $16.5 million ~~for~~related to the ~~three months ended March 31, 2019. There~~convertible note hedge transactions and the tax basis of the capitalized debt issuance costs through additional paid-in capital. The deferred tax liability and deferred tax asset were ~~0 amounts outstanding~~included net in ~~fiscal 2020.~~“Deferred tax assets” on the consolidated balance sheets. Upon adoption of ASU2020-06, the Company reversed the deferred tax liability of $13.9 million that the Company had recorded at issuance related to the Convertible Senior Note debt discount and recorded an additional deferred tax liability of $0.4 million related to the capitalized debt issuance costs. In addition, the Company recorded a $0.9 million adjustment to the deferred tax asset through retained earnings related to the tax effect of book accretion recorded in 2020 and reversed upon adoption.

On ~~March 27, 2020,~~January 5, 2021, the ~~Coronavirus Aid, Relief,~~Treasury Department and ~~Economic Security Act (“CARES Act”) was enacted in response to~~Internal Revenue Service issued final regulations which provide guidance on applying the COVID-19 pandemic. The CARES Act, among other things, permits Net Operating Loss (“NOL“) carryovers to offset 100% of taxable income for tax years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2018, 2019, and 2020 to be carried back to each of the five preceding tax years to generate a refund of previously paid income taxes. The CARES Act contains modificationslimitations on the ~~limitation~~deductibility of business interest ~~for tax years beginning in 2019 and 2020. The modifications to~~expense under IRC Section 163(j) ~~increase~~. On January 6, 2021, the ~~allowable business interest deduction from 30%~~government published final regulations under IRC Section 451. The final regulations include guidance related to (1) timing of ~~adjusted taxable~~ income ~~to 50%~~inclusion for taxpayers with an applicable financial statement using an accrual method of ~~adjusted taxable income. The CARES Act also accelerates the refund of AMT credits that were previously accumulated.~~accounting under IRC Section 451(b), and (2) advance payments for goods, services, and certain other items under IRC Section 451(c). The Company is currently ~~evaluating~~assessing the impact of the ~~CARES Act; however, at present it~~new regulations but does not expect ~~that the modifications on the limitation of business interest or AMT credits would have~~ any material impact to ~~the Company. Under the NOL carryback provision, the Company expects to carry back some of~~ its ~~NOLs, including certain amounts associated with acquisitions which may be subject to certain seller shareholders’ claims.~~

Prior to the Company’s IPO, the Company had elected to be taxed under the provisions of Subchapter “S” of the Internal Revenue Code for federal tax purposes. As a result, income had not been subject to U.S. federal income taxes or state income taxes in those states where the “S” Corporation status is recognized. Therefore, previously, no provision or liability for federal or state income tax had been provided in the consolidated financial ~~statements except for those states where the “S” Corporation status was not recognized, or where states imposed a tax on “S” Corporations.~~ statements.~~The provision~~

~~for income tax in the historical periods prior to the IPO consists of these state taxes and taxes from certain foreign jurisdictions where the Company is subject to tax.~~

In connection with the Company’s IPO on May 8, 2019, the “S” Corporation status was terminated, and the Company is now treated as a “C” Corporation under the Code. The termination of the “S” Corporation election has had a material impact on the Company’s results of operations, financial condition, and cash flows as reflected in the March 31, 2020 consolidated financial statements. The effective tax rate has increased, and net income has decreased as compared to the Company’s “S” Corporation tax years, since the Company is now subject to both U.S. federal and state corporate income taxes on its earnings.

The Company’s effective tax rate was ~~26.13%~~27.7% and ~~12.35%~~26.1% for the three months ended March 31, ~~2020~~2021 and ~~2019,~~2020, respectively. The ~~most significant items contributing to the~~ change in the effective tax rate ~~relate~~was due primarily to an increase of foreign tax losses which will not provide any tax benefit to the ~~Company’s change in “S” Corporation to “C” Corporation status~~Company and ~~change in jurisdictional earnings.~~a settlement of a state tax audit. The difference between the effective tax rate and the statutory U.S. Federal income tax rate of 21.0% for the quarter ended March 31, ~~2020~~2021 primarily relates to state income ~~taxes.~~taxes and a recorded valuation allowance on foreign tax credits, partially offset by benefits related to income attributable to noncontrolling interest and federal research tax credits.

As of March 31, ~~2020,~~2021, the Company’s deferred tax assets included a valuation allowance of ~~$18.2~~$30.5 million primarily related to foreign net operating loss carryforwards, foreign tax credit carryforwards, and capital losses that the Company has determined are not more-likely-than-not to be realized. The factors used to assess the likelihood of realization ~~were~~include: the past performance of the ~~related~~ entities, forecasts of future taxable income, future reversals of existing taxable temporary

differences, and available tax planning strategies that could be implemented to realize the deferred tax assets. The ability or failure to achieve the forecasted taxable income in these entities could affect the ultimate realization of deferred tax assets.

As of March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, the liability for income taxes associated with uncertain tax positions was ~~$14.8~~$17.4 million and ~~$15.5~~$16.4 million, respectively. ~~The~~It is reasonably possible that the Company ~~does not anticipate~~may realize a ~~material change within twelve~~decrease in our uncertain tax positions of approximately $0.2 million during the next 12 months as a result of concluding various tax audits and closing tax years.

Although the Company believes its reserves for its tax positions are reasonable, the final outcome of tax ~~examination~~audits could be materially different, both favorably and unfavorably. It is reasonably possible that certain ~~examinations~~audits may conclude in the next 12 months and that the unrecognized tax benefits the Company has recorded in relation to these tax years may change compared to the liabilities recorded for these periods. However, it is not currently possible to estimate the amount, if any, of such change.

The Company is subject to certain lawsuits, claims and assessments that arise in the ordinary course of business. Additionally, the Company has been named as a defendant in lawsuits alleging personal injuries as a result of contact with asbestos products at various project sites. Management believes that any significant costs relating to these claims will be reimbursed by applicable insurance and, although there can be no assurance that these matters will be resolved favorably, management believes that the ultimate resolution of any of these claims will not have a material adverse effect on our consolidated financial position, results of operations, or cash flows. A liability is recorded when it is both probable that a loss has been incurred and the amount of loss or range of loss can be reasonably estimated. When using a range of loss estimate, the Company records the liability using the low end of the range. The Company records a corresponding receivable for costs covered under its insurance policies. Management judgment is required to determine the outcome and the estimated amount of a loss related to such matters. Management believes that there are 0 claims or assessments outstanding which would materially affect the consolidated results of operations or the Company’s financial position.

On or about March 1, 2017, the Peninsula Corridor Joint Powers Board, or the JPB, filed a lawsuit against Parsons Transportation Group, Inc., or PTG, in the Superior Court of California, County of San Mateo, in connection with a positive train control project on which PTG was engaged prior to termination of its contract by the JPB. PTG had previously filed a lawsuit against the JPB for breach of contract and wrongful termination. The JPB seeks damages in excess of $100.0 million, which the Company is currently disputing. In addition to filing a complaint for breach of contract and wrongful termination, the Company has denied the allegations raised by the JPB and, accordingly, filed affirmative defenses. The Company is currently defending against the JPB’s claims and the parties are still engaged in discovery. The Company also has a professional liability insurance policy to the extent the JPB proves any errors or omissions occurred. At this time, the Company is unable to determine the probability of the outcome of the litigation or determine a potential range of loss, if any. The Company has also filed a third-party claim against a subcontractor for indemnification in connection with this matter.

In September 2015, a former Parsons employee filed an action in the United States District Court for the Northern District of Alabama against us as a qui tam relator on behalf of the United States (the “Relator”) alleging violation of the

False Claims Act. The United States government did not intervene in this matter as it is allowed to do so under the statute. The Company filed a motion to dismiss the lawsuit on the grounds that the Relator did not meet the applicable statute of limitations. The District Court granted the motion to dismiss. The Relator’s attorney appealed the decision to the United States Court of Appeals of the Eleventh Circuit, which ultimately ruled in favor of the Relator, and the Company petitioned the United States Supreme Court to review the decision. The Supreme Court reviewed the decision and accepted the position of the Relator. The case was thus remanded to the United States District Court for the Northern District of Alabama. The defendants, including Parsons, will file appropriate pleadings opposing the allegations. At this time, the Company is unable to determine the probability of the outcome of the litigation or determine a potential range of loss, if any.

On or about October 4, 2019, LBH Engineers, LLC (“LBH”) filed a lawsuit against Parsons, PTG, and various other parties in the US District Court of for the Northern District of Georgia, in connection with an alleged infringement of LBH’s patent. LBH seeks damages and costs incurred by LBH, a post-judgment royalty, and treble damages if the infringement is found to be willful, among other damages, which the Company and the other defendants are currently disputing. At this time, the Company is unable to determine the probability of the outcome of the litigation or determine a potential range of loss, if any.

Federal government contracts are subject to audits, which are performed for the most part by the Defense Contract Audit Agency (“DCAA”). Audits by the DCAA and other agencies consist of reviews of our overhead rates, operating systems and cost proposals to ensure that we account for such costs in accordance with the Cost Accounting Standards (“CAS”). If the DCAA determines we have not accounted for such costs in accordance with the CAS, the DCAA may disallow these costs. The disallowance of such costs may result in a reduction of revenue and additional liability for the Company. Historically, the Company has not experienced any material disallowed costs as a result of government audits. However, the Company can provide no assurance that the DCAA or other government audits will not result in material disallowances for incurred costs in the future. All audits of costs incurred on work performed through 2010 have been closed, and years thereafter remain open.

Although there can be no assurance that these matters will be resolved favorably, management believes that their ultimate resolution will not have a material adverse impact on the Company’s consolidated financial position, results of operations, or cash flows.

The Company’s principal retirement benefit plan is the Parsons Employee Stock Ownership Plan (“ESOP”), a stock bonus plan, established in 1975 to cover eligible employees of the Company and certain affiliated companies. Contributions of treasury stock to the ESOP are made annually in amounts determined by the Company’s board of directors and are held in trust for the sole benefit of the participants. Shares allocated to a participant’s account are fully vested after three years of credited service, or in the event(s) of reaching age 65, death or disability while an active employee of the Company. As of March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, total shares of the Company’s common stock outstanding were ~~100,669,694~~102,406,446 and ~~100,669,694,~~102,360,662, respectively, of which ~~78,398,520~~ 75,560,749and ~~78,896,806,~~76,641,312, respectively, were held by the ESOP.

A participant’s interest in their ESOP account is redeemable upon certain events, including retirement, death, termination due to permanent disability, a severe financial hardship following termination of employment, certain conflicts of interest following termination of employment, or the exercise of diversification rights. Distributions from the ESOP of participants’ interests are made in the Company’s common stock based on quoted prices of a share of the Company’s common stock on the NYSE. A participant will be able to sell such shares of common stock in the market, subject to any requirements of the federal securities laws.

Total ESOP contribution expense was ~~$14.9~~$13.2 million and ~~$12.2~~$14.9 million for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019,~~2020, respectively. The expense is recorded in “Direct costs of contracts” and ~~“Indirect,~~“Selling, general and administrative expense” in the consolidated statements of income. The fiscal ~~2020~~2021 ESOP contribution has not yet been made. The amount is currently included in accrued liabilities.

On April 3, 2019, the board of directors of the Company declared a cash dividend to the Company’s sole existing shareholder at that time, the ESOP, in the amount of $2.00 per share, or $52.1 million in the aggregate (the “IPO Dividend”). The IPO Dividend was paid on May 10, 2019. On April 15, 2019, the board of directors of the Company declared a common stock dividend in a ratio of 2 shares of common stock for every one share of common stock then

held by the Company’s shareholder (the “Stock Dividend”). The record date of the Stock Dividend was May 7, 2019, the day immediately prior to the consummation of the Company’s IPO on May 8, 2019, and the payment date of the Stock Dividend was May 8, 2019. Purchasers of the Company’s common stock in the Company’s public offering were not entitled to receive any portion of the Stock Dividend.

The Company participates in joint ventures to bid, negotiate and complete specific projects. The Company is required to consolidate these joint ventures if it holds the majority voting interest or if the Company meets the criteria under the consolidation model, as described below.

The Company performs an analysis to determine whether its variable interests give the Company a controlling financial interest in a Variable Interest Entity (“VIE”) for which the Company is the primary beneficiary and should, therefore, be consolidated. Such analysis requires the Company to assess whether it has the power to direct the activities of the VIE and the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE.

The Company analyzed all of its joint ventures and classified them into two groups: (1) joint ventures that must be consolidated because they are either not VIEs and the Company holds the majority voting interest, or because they are

VIEs and the Company is the primary beneficiary; and (2) joint ventures that do not need to be consolidated because they are either not VIEs and the Company holds a minority voting interest, or because they are VIEs and the Company is not the primary beneficiary.

Many of the Company’s joint venture agreements provide for capital calls to fund operations, as necessary; however, such funding is infrequent and is not anticipated to be material.

Letters of credit outstanding described in “Note 10 – Debt and Credit Facilities” that relate to project ventures are ~~$48.4~~$67.4 million and ~~$55.0~~$59.3 million at March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, respectively.

In the table below, aggregated financial information relating to the Company’s joint ventures is provided because their nature, risk and reward characteristics are similar. None of the Company’s current joint ventures that meet the characteristics of a VIE are individually significant to the consolidated financial statements.

The following represents financial information for consolidated joint ventures included in the consolidated financial statements (in thousands):

	March 31, 2020		December 31, 2019		March 31, 2021		December 31, 2020
Current assets	$	284,357	$	255,167	$	299,764	$	292,407
Noncurrent assets		2,441		2,860		2,888		2,990
Total assets		286,798		258,027		302,652		295,397
Current liabilities		219,880		193,583		214,015		201,270
Total liabilities		219,880		193,583		214,015		201,270
Total joint venture equity	$	66,918	$	64,444	$	88,637	$	94,127

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Revenue	$	100,278	$	115,104	$	96,624	$	100,278
Costs		97,150		107,206		86,306		97,150
Net income	$	3,128	$	7,898	$	10,318	$	3,128
Net income attributable to noncontrolling interests	$	1,398	$	3,645	$	4,975	$	1,398

The assets of the consolidated joint ventures are restricted for use only by the particular joint venture and are not available for the Company’s general operations.

The Company accounts for its unconsolidated joint ventures using the equity method of accounting. Under this method, the Company recognizes its proportionate share of the net earnings of these joint ventures as “Equity in earnings (loss) of unconsolidated joint ventures” in the consolidated statements of income. The Company’s maximum exposure to loss as a result of its investments in unconsolidated ~~VIEs~~joint ventures is typically limited to the aggregate of the carrying value of the investment and future funding commitments.

The following represents the financial information of the Company’s unconsolidated joint ventures as presented in their unaudited financial statements (in thousands):

	March 31, 2020		December 31, 2019		March 31, 2021		December 31, 2020
Current assets	$	735,279	$	801,335	$	740,595	$	774,646
Noncurrent assets		527,529		564,160		580,224		585,802
Total assets		1,262,808		1,365,495		1,320,819		1,360,448
Current liabilities		663,622		655,495		673,872		703,287
Noncurrent liabilities		475,463		507,131		528,168		517,697
Total liabilities		1,139,085		1,162,626		1,202,040		1,220,984
Total joint venture equity		123,723		202,869	$	118,779	$	139,464
Investments in and advances to unconsolidated joint ventures	$	65,716	$	68,620	$	76,017	$	68,975

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Revenue	$	238,188	$	229,466	$	236,517	$	238,188
Costs		223,686		216,780		210,847		223,686
Net income	$	14,502	$	12,686	$	25,670	$	14,502
Equity in earnings of unconsolidated joint ventures	$	6,114	$	10,397	$	7,530	$	6,114

The Company received net distributions from and sale proceeds for its unconsolidated joint ventures for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 of ~~$6.5~~$5.4 million and ~~$8.1~~$6.5 million, respectively.

The Company often provides services to unconsolidated joint ventures and revenues include amounts related to recovering overhead costs for these services. Revenues related to services the Company provided to unconsolidated joint ventures for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 were ~~$40.4~~$42.0 million and ~~$33.6~~$40.4 million, respectively. For the three months ended March 31, ~~2020~~2021 and March 31, ~~2019,~~2020, the Company incurred ~~$31.5~~$31.3 million and ~~$27.2~~$31.5 million, respectively, of reimbursable costs. Amounts included in the consolidated balance sheets related to services the Company provided to unconsolidated joint ventures are as follows (in thousands):

	March 31, 2020		December 31, 2019		March 31, 2021		December 31, 2020
Accounts receivable	$	35,674	$	37,425	$	34,709	$	37,544
Contract assets		7,876		6,955		11,410		8,889
Contract liabilities		4,359		4,509		5,726		5,720

The authoritative guidance on fair value measurement defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (referred to as an “exit price”). At March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, the Company’s financial instruments include cash, cash equivalents, accounts receivable, accounts payable, and other liabilities. The fair values of these financial instruments approximate their carrying values due to their short-term maturities.

Investments measured at fair value are based on one or more of the following three valuation techniques:

In addition, the guidance establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted market prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are:

The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Refer to Notes to Consolidated Financial Statements included in the Company’s Form 10-K for the year ended December 31, ~~2019~~2020 for a more complete discussion of the various items within the consolidated financial statements measured at fair value and the methods used to determine fair value.

The following ~~table reconciles~~tables reconcile the denominator and numerator used to compute basic earnings per share (“EPS”) to the denominator and numerator used to compute diluted EPS for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019.~~2020. Basic EPS is computed using the weighted average number of shares outstanding during the period and income available to shareholders. Diluted EPS is computed similar to basic EPS, except the income available to shareholders is adjusted to add back interest expense, after tax, related to the Convertible Senior Note, and the weighted average number of shares outstanding is ~~increased~~adjusted to ~~include~~reflect the dilutive effects of ~~equity-based~~stock-based awards and shares underlying the Convertible Senior Note.

Convertible Senior Note dilution impact is calculated using the if-converted method which was required upon adoption of ASU 2020-06. As a result, the Company elected to adopt the if-converted method when the Convertible Senior Notes were issued during the third quarter of 2020. In connection with the offerings of the Notes, the Company entered into a convertible note hedge and warrants (see Note 10 Debt and Credit Facilities); however, the convertible note hedge is not considered when calculating dilutive shares given its impact is anti-dilutive. The impact of the bond hedge would offset the dilutive impact of the shares underlying the Convertible Senior Note. The warrants have a strike price above our average share price during the period and are out of the money and not included in the tables below.

Dilutive potential common shares include shares the Company could be obligated to issue from its Convertible Senior Notes and warrants (see Note 10 for further discussion) and stock-based awards. ~~At March 31, 2020, there were 27,596 shares~~Shares to be provided to the Company from its bond hedge purchased concurrently with the issuance of Convertible Senior Notes are anti-dilutive and are not included in its diluted shares. Anti-dilutive stock-based awards excluded from the ~~number~~calculation of ~~shares used in calculating diluted EPS as their inclusion would be antidilutive~~. ~~There were 0 dilutive securities outstanding~~earnings per share for the three months ended March 31, ~~2019.~~2021 and March 31, 2020 were 145 and 27,596, respectively.

The weighted average number of shares used to compute basic and diluted EPS were:

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Basic weighted average number of shares outstanding		100,669,693		78,161,484		102,375,923		100,669,693
Dilutive common share equivalents		229,631		-
Stock-based awards						573,048		229,631
Convertible senior notes						8,916,530		0
Diluted weighted average number of shares outstanding		100,899,324		78,161,484		111,865,501		100,899,324

The net income available to shareholders to compute basic and diluted EPS were (in thousands):

The Company operates in 2 reportable segments: Federal Solutions and Critical Infrastructure.

The Federal Solutions segment provides advanced technical solutions to the U.S. government, delivering timely, cost-effective hardware, software and services for mission-critical projects. The segment provides advanced technologies,

supporting national security missions in cybersecurity, missile defense, and military facility modernization, logistics support, hazardous material remediation and engineering services.

The Critical Infrastructure segment provides integrated engineering and management services for complex physical and digital infrastructure around the globe. The Critical Infrastructure segment is a technology innovator focused on next generation digital systems and complex structures. Industry leading capabilities in engineering and project management allow the Company to deliver significant value to customers by employing cutting-edge technologies, improving timelines and reducing costs.

The Company defines its reportable segments based on the way the chief operating decision maker (“CODM”), currently its Chairman and Chief Executive Officer, evaluates the performance of each segment and manages the operations of the Company for purposes of allocating resources among the segments. The CODM evaluates segment operating performance using segment Revenue and segment Adjusted EBITDA attributable to Parsons Corporation.

The following table summarizes business segment revenue for the periods presented (in thousands):

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Federal Solutions revenue	$	477,571	$	422,812	$	452,069	$	477,571
Critical Infrastructure revenue		493,422		481,593		422,628		493,422
Total revenue	$	970,993	$	904,405	$	874,697	$	970,993

The Company defines Adjusted EBITDA attributable to Parsons Corporation as Adjusted EBITDA excluding Adjusted EBITDA attributable to noncontrolling interests. The Company defines Adjusted EBITDA as net income (loss) attributable to Parsons Corporation, adjusted to include net income (loss) attributable to noncontrolling interests and to exclude interest expense (net of interest income), provision for income taxes, depreciation and amortization and certain other items that are not considered in the evaluation of ongoing operating performance. These other items include net income (loss) attributable to noncontrolling interests, asset impairment charges, income and expense recognized on litigation matters, expenses incurred in connection with acquisitions and other non-recurring transaction costs and expenses related to our prior restructuring. The following table reconciles business segment Adjusted EBITDA attributable to Parsons Corporation to Net Income attributable to Parsons Corporation for the periods presented (in thousands):

	Three Months Ended						Three Months Ended
Adjusted EBITDA attributable to Parsons Corporation	March 31, 2020			March 31, 2019			March 31, 2021			March 31, 2020
Federal Solutions	$	31,617		$	40,599		$	31,982		$	31,617
Critical Infrastructure		27,357			27,676			31,657			27,357
Adjusted EBITDA attributable to Parsons Corporation		58,974			68,275			63,639			58,974
Adjusted EBITDA attributable to noncontrolling interests		1,522			3,749			5,060			1,522
Depreciation and amortization		(32,409	)		(30,591	)		(34,673	)		(32,409	)
Interest expense, net		(3,794	)		(7,815	)		(4,443	)		(3,794	)
Income tax expense		(5,084	)		(1,886	)		(5,375	)		(5,084	)
Equity-based compensation income (expense)		7,721			(3,850	)		(6,980	)		7,721
Transaction-related costs (a)		(12,011	)		(9,355	)		(2,646	)		(12,011	)
Restructuring income (expense) (b)		33			(2,218	)
Restructuring expense (b)								(77	)		33
Other (c)		(581	)		(2,923	)		(491	)		(581	)
Net income including noncontrolling interests		14,371			13,386			14,014			14,371
Net income attributable to noncontrolling interests		1,398			3,645			4,975			1,398
Net income attributable to Parsons Corporation	$	12,973		$	9,741		$	9,039		$	12,973

Asset information by segment is not a key measure of performance used by the CODM.

The following tables present revenues and property and equipment, net by geographic area (in thousands):

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Revenue
North America	$	797,946	$	731,030	$	716,346	$	797,946
Middle East		168,859		167,952		153,643		168,859
Rest of World		4,188		5,423		4,708		4,188
Total Revenue	$	970,993	$	904,405	$	874,697	$	970,993

The geographic location of revenue is determined by the location of the customer. ~~The prior reporting of revenue by geographic location has been conformed to the current presentation.~~

	March 31, 2020		December 31, 2019		March 31, 2021		December 31, 2020
Property and Equipment, Net
North America	$	119,658	$	117,606	$	111,398	$	116,460
Middle East		4,942		5,145		4,146		4,567
Total Property and Equipment, Net	$	124,600	$	122,751	$	115,544	$	121,027

North America includes revenue in the United States for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 of ~~$735.8~~$652.2 million and ~~$669.2~~$735.8 million, respectively. North America property and equipment, net includes ~~$112.5~~$104.8 million and ~~$109.9~~$109.6 million of property and equipment, net in the United States at March 31, ~~2020~~2021 and December 31, ~~2019,~~2020, respectively.

The following table presents revenues by business ~~lines~~units (in thousands):

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Revenue
Cyber & Intelligence					$	83,328	$	98,882
Space & Geospatial Solutions	$	51,288	$	45,757		83,059		51,288
Cyber & Intelligence		98,882		72,549
Missile Defense & C5ISR						144,715		154,569
Engineered Systems		172,832		145,618		140,967		172,832
Missile Defense & C5ISR		154,569		158,888
Federal Solutions revenues		477,571		422,812		452,069		477,571
Connected Communities						89,883		101,901
Mobility Solutions		391,521		373,980		332,745		391,521
Connected Communities		101,901		107,613
Critical Infrastructure revenues		493,422		481,593		422,628		493,422
Total Revenue	$	970,993	$	904,405	$	874,697	$	970,993

Effective January 1, 2020, the Company made changes to its business lines as described below. The prior year information in the table above has been reclassified to conform to the business line changes.

As a result of the acquisitions of Polaris Alpha, OGSystems and QRC, we realigned the five business lines within our Federal Solutions segment into four business lines. We consolidated all space and geospatial programs from the former Geospatial Solutions, Defense and Cyber & Intelligence markets into a new Space & Geospatial Solutions business line to increase focus on the critical, evolving space market. This new business line better aligns capabilities and customers to drive growth and performance execution through improved agile, end-to-end solutions and dedicated customer focus. None noted.

Further, we re-named our Defense business line to Missile Defense & C5ISR. We moved our Missions Solutions business line into our Missile Defense & C5ISR, Engineered Systems and Cyber & Intelligence business lines, for better customer and capability alignment. These changes were the next logical step in our acquisition integration process, to optimize performance delivery and growth.

We re-aligned our Critical Infrastructure segment from three markets to two markets. Industrial is now a part of Mobility Solutions and we moved all Middle East business into Mobility Solutions as well. We believe this will drive improved synergies among like-markets and increased collaboration in areas such as program and engineering management, civil and structural and water/wastewater treatment. We also moved Aviation to Connected Communities and consolidated the civil portion of rail and transit with the systems portion of rail and transit into a consolidated sub-market within Connected Communities to focus on growth in these critical market segments. In each, we are pursuing systems, software and hardware product advanced technology opportunities.

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

The following discussion and analysis is intended to help investors understand our business, financial condition, results of operations, liquidity and capital resources. You should read this discussion together with our consolidated financial statements and related notes thereto included elsewhere in this Form 10-Q and in conjunction with the Company’s Form 10-K for the year ended December 31, ~~2019.~~2020.

The statements in this discussion regarding industry outlook, our expectations regarding our future performance, liquidity and capital resources and other non-historical statements in this discussion are forward-looking statements. These forward-looking statements are subject to numerous risks and uncertainties, including, but not limited to, the risks and uncertainties described in “Risk Factors” and “Special Note Regarding Forward-Looking Statements” in the Company’s Form 10-K for the year ended December 31, ~~2019.~~2020. We undertake no obligation to revise publicly any forward-looking statements. Actual results may differ materially from those contained in any forward-looking statements.

In response to the COVID-19 pandemic, the Company has taken certain actions to continue to execute under our contracts with customers and allow our people to work safely. A substantial majority of our work-force transitioned to work-from-home status during the latter part of the quarter ended March 31, 2020, and these practices remain in effect as of the date of this filing. To date, we have experienced no material disruption in our work as a consequence of these changes in our work practices.

~~As of the date of this filing, the~~The Company has ~~not~~ experienced ~~a material~~an impact onin the volume of ~~current~~ work in both the Federal Solutions and noCritical Infrastructure segments where customers have restricted access to certain project sites. We have not seen any substantive cancellations of previously awarded contracts. In the Federal Solutions segment, we have had some existing contracts extended. We ~~have seen~~continue to see several potential contract awards pushed out to a future date.

The Company ~~anticipates~~is receiving limited benefits associated with the CARES Act related to its work on certain US national security projects; however, the curtailment of work under these projects and the CARES Act benefits are not likely to have a material impact on our financial condition or results of operations. The reimbursement period for Section 3610 of the CARES Act was extended until March 31, 2021.

The Company has provided additional disclosure around liquidity and capital resources which can be found in the “Liquidity and Capital Resources” section in Management’s Discussion and Analysis of Financial Condition and Results of Operations in this Form 10-Q.

The Company anticipates substantially all of the Company’s subcontractors and material suppliers will be able to fulfill their contractual obligations and we do not expect a material impact from non-performance.

The ultimate impact from the COVID-19 pandemic is difficult to predict. While many uncertainties exist, we currently anticipate no material change in our financial condition or results of operations.

PARSONS CORPORATION Enabling a safer, smarter, and more interconnected world. Engineered solutions for complex physical and digital infrastructure challenges SEGMENTS KEY FACTS AND FIGURES Technology-driven solutions for defense and intelligence customers FINANCIAL SNAPSHOT $4B Total Revenue Trailing 12-Months (Q2 2020) $4B Contract Awards Trailing 12-Months (Q2 2020) 75+ Years Of History Federal Solutions ~~segment, there have been minimal impacts primarily as a result of efforts to reduce personnel concentration and ensure social distancing in classified environments.~~

~~Within the~~49% Critical Infrastructure segment, North America has seen a slight reduction in client hours as a result of limited access to construction sites not being deemed essential and health concerns have led local governments to shut down certain programs. The MEA region has experienced minimal impact to business and no notable issues with access to client sites. These impacts are not expected to have a material impact on our financial condition or results of operations.

51% Federal Solutions 58% Critical Infrastructure 42% Federal Solutions Critical Infrastructure ~16K Employees 6% Revenue Growth Trailing 12-Months (Q2 2020) 1.0X Book-To-Bill Ratio Trailing 12-Months (Q2 2020) $7.7B Backlog As Of 6/30/2020 PARSONS CORPORATION.

We are a leading ~~disruptive~~innovative technology provider in the global defense, intelligence and critical infrastructure markets. We provide software and hardware products, technical services and integrated solutions to support our customers’ missions. We have developed significant expertise and differentiated capabilities in key areas of cybersecurity, intelligence, missile defense, C5ISR, space, geospatial, and connected communities. By combining our talented team of professionals and advanced technology, we help solve complex technical challenges to enable a safer, smarter and more interconnected world.

We operate in two reporting segments, Federal Solutions and Critical Infrastructure. Our Federal Solutions business provides advanced technical solutions to the U.S. government. Our Critical Infrastructure business provides integrated engineering and management services for complex physical and digital infrastructure to state and local governments and large companies.

Our employees provide services pursuant to contracts that we are awarded by the customer and specific task orders relating to such contracts. These contracts are often multi-year, which provides us backlog and visibility on our revenues for future periods. Many of our contracts and task orders are subject to renewal and rebidding at the end of their term, and some are subject to the exercise of contract options and issuance of task orders by the applicable government entity. In addition to focusing on increasing our revenues through increased contract awards and backlog, we focus our financial performance on margin expansion and cash flow.

We manage and assess the performance of our business by evaluating a variety of metrics. The following table sets forth selected key metrics (in thousands, except Book-to-Bill):

	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Awards (year to date)	$	966,095	$	1,221,068	$	1,010,974	$	966,095
Backlog (1)	$	7,801,180	$	8,553,969	$	8,170,126	$	7,801,180
Book-to-Bill (year to date)		1.0		1.4		1.2		1.0

Awards generally represent the amount of revenue expected to be earned in the future from funded and unfunded contract awards received during the period. Contract awards include both new and re-compete contracts and task orders. Given that new contract awards generate growth, we closely track our new awards each year.

The following table summarizes the year to-date value of new awards for the periods presented below (in thousands):

	Three Months Ended				Three Months Ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Federal Solutions	$	615,690	$	808,540	$	424,621	$	615,690
Critical Infrastructure		350,405		412,528		586,353		350,405
Total Awards	$	966,095	$	1,221,068	$	1,010,974	$	966,095

The change in new awards from year to year is primarily due to ordinary course fluctuations in our business. The volume of contract awards can fluctuate in any given period due to win rate and the timing and size of the awards issued by our customers. The change in new awards ~~from year to year~~ in our Federal Solutions segment ~~is primarily due~~for the three months ended March 31, 2021 when compared to ~~two significant contracts~~the corresponding period last year was impacted by one large contract awarded in the first quarter of ~~2019. Awards~~2020. The awards in Critical Infrastructure for the three months ended March 31, ~~2020,~~2021 were impacted by ~~delays in potential awards by our customers, particularly~~several large contracts awarded in the ~~Middle East.~~first quarter of 2021.

Backlog includes (i) unissued task orders and unexercised option years, to the extent their issuance or exercise is probable, as well as (ii) contract awards, to the extent we believe contract execution and funding is probable.

The following table summarizes the value of our backlog at the respective dates presented below: (in thousands):

	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Federal Solutions:
Funded	$	1,659,309	$	1,028,207
Funded (1)					$	1,127,717	$	1,338,903
Unfunded		3,395,617		4,083,388		4,010,656		3,716,023
Total Federal Solutions		5,054,926		5,111,595		5,138,373		5,054,926
Critical Infrastructure:
Funded		2,707,701		3,442,374		2,956,255		2,707,701
Unfunded		38,553		-		75,498		38,553
Total Critical Infrastructure		2,746,254		3,442,374		3,031,753		2,746,254
Total Backlog ~~(1)~~(2)	$	7,801,180	$	8,553,969	$	8,170,126	$	7,801,180

Our backlog includes orders under contracts that in some cases extend for several years. For example, the U.S. Congress generally appropriates funds for our U.S. federal government customers on a yearly basis, even though their contracts with us may call for performance that is expected to take a number of years to complete. As a result, our federal contracts typically are only partially funded at any point during their term. All or some of the work to be performed under the contracts may remain unfunded unless and until the U.S. Congress makes subsequent appropriations and the procuring agency allocates funding to the contract.

We expect to recognize ~~$3.0~~$2.7 billion of our funded backlog at March 31, ~~2020~~2021 as revenues in the following twelve months. However, our U.S. federal government customers may cancel their contracts with us at any time through a termination for convenience or may elect to not exercise option periods under such contracts. In the case of a termination for convenience, we would not receive anticipated future revenues, but would generally be permitted to recover all or a portion of our incurred costs and fees for work performed. See “Risk Factors—Risk Relating to Our Business—We may not realize the full value of our backlog, which may result in lower than expected revenue” in the Company’s Form 10-K for the year ended December 31, ~~2019.~~2020.

The changes in backlog in both the Federal Solutions and Critical Infrastructure segments were primarily from ordinary course fluctuations in our business and the impacts related to the Company’s awards discussed above.

Book-to-bill is the ratio of total awards to total revenue recorded in the same period. Our management believes our book-to-bill ratio is a useful indicator of our potential future revenue growth in that it measures the rate at which we are generating new awards compared to the Company’s current revenue. To drive future revenue growth, our goal is for the level of awards in a given period to exceed the revenue booked. A book-to-bill ratio greater than 1.0 indicates that awards generated in a given period exceeded the revenue recognized in the same period, while a book-to-bill ratio of less than 1.0 indicates that awards generated in such period were less than the revenue recognized in such period. The following table sets forth the book-to-bill ratio for the periods presented below:

	Three months ended				Three months ended
	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Federal Solutions		1.3		1.9		0.9		1.3
Critical Infrastructure		0.7		0.9		1.4		0.7
Overall		1.0		1.4		1.2		1.0

We believe that the financial performance of our business and our future success are dependent upon many factors, including those highlighted in this section. Our operating performance will depend upon many variables, including the success of our growth strategies and the timing and size of investments and expenditures that we choose to undertake, as well as market growth and other factors that are not within our control.

Changes in the relative mix of government spending and areas of spending growth, with shifts in priorities on homeland security, intelligence, defense-related programs, infrastructure and urbanization, and continued increased spending on technology and innovation, including cybersecurity, artificial intelligence, connected communities and physical infrastructure, could impact our business and results of operations. Cost-cutting and efficiency initiatives, current and future budget restrictions, spending cuts and other efforts to reduce government spending could cause our government customers to reduce or delay funding or invest appropriated funds on a less consistent basis or not at all, and demand for our solutions or services could diminish. Furthermore, any disruption in the functioning of government agencies, including as a result of government closures and shutdowns, could have a negative impact on our operations and cause us to lose revenue or incur additional costs due to, among other things, our inability to deploy our staff to customer locations or facilities as a result of such disruptions.

There is uncertainty around the timing, extent, nature and effect of Congressional and other U.S. government actions to address budgetary constraints, caps on the discretionary budget for defense and non-defense departments and

agencies, and the ability of Congress to determine how to allocate the available budget authority and pass appropriations bills to fund both U.S. government departments and agencies that are, and those that are not, subject to the caps. Additionally, budget deficits and the growing U.S. national debt increase pressure on the U.S. government to reduce federal spending across all federal agencies, with uncertainty about the size and timing of those reductions. Furthermore, delays in the completion of future U.S. government budgets could in the future delay procurement of the federal government services we provide. A reduction in the amount of, or delays, or cancellations of funding for, services that we are contracted to provide to the U.S. government as a result of any of these impacts or related initiatives, legislation or otherwise could have a material adverse effect on our business and results of operations.

Increased audit, review, investigation and general scrutiny by government agencies of performance under government contracts and compliance with the terms of those contracts and applicable laws could affect our operating results. Negative publicity and increased scrutiny of government contractors in general, including us, relating to government expenditures for contractor services and incidents involving the mishandling of sensitive or classified information, as well as the increasingly complex requirements of the U.S. Department of Defense and the U.S. ~~intelligence community,~~Intelligence Community, including those related to cybersecurity, could impact our ability to perform in the markets we serve.

The industries we operate in consist of a large number of enterprises ranging from small, niche-oriented companies to ~~multi-billion dollar~~multi-billion-dollar corporations that serve many government and commercial customers. We compete on the basis of our technical expertise, technological innovation, our ability to deliver cost-effective multi-faceted services in a timely manner, our reputation and relationships with our customers, qualified and/or security-clearance personnel, and pricing. We believe that we are uniquely positioned to take advantage of the markets in which we operate because of our proven track record, long-term customer relationships, technology innovation, scalable and agile business offerings and world class talent. Our ability to effectively deliver on project engagements and successfully assist our customers affects our ability to win new contracts and drives our financial performance.

On ~~July 31, 2019,~~November 19, 2020, we acquired Braxton for $308.8 million. Braxton operates at the ~~Company acquired QRC Technologies~~forefront of satellite operations, ground system automation, flight dynamics, and spacecraft and antenna simulation for ~~$214.1 million. QRC Technologies provides design~~the U.S. Department of Defense and ~~development of open-architecture radio-frequency products.~~Intelligence Community. The acquisition was funded by cash ~~on-hand and borrowings under our Revolving Credit Facility.~~on-hand. The financial results of ~~QRC Technologies~~Braxton have been included in our consolidated results of operations from ~~July 31, 2019~~November 19, 2020 onward.

Our results may be affected by variances as a result of weather conditions and contract award seasonality impacts that we experience across our businesses. ~~This pattern~~The latter issue is typically driven by the U.S. federal government fiscal year-end, September 30. While not certain, it is not uncommon for U.S. government agencies to award ~~extra tasks~~task orders or complete other contract actions in the weeks before the end of the U.S. federal government fiscal year in order to avoid the loss of unexpended U.S. federal government fiscal year funds. In addition, we have also historically experienced higher bid and proposal costs in the months leading up to the U.S. federal government fiscal year-end as we pursue new contract opportunities expected to be awarded early in the following U.S. federal government fiscal year as a result of funding appropriated for that U.S. federal government fiscal year. Furthermore, many U.S. state governments with fiscal years ending on June 30 tend to accelerate spending during their first quarter, when new funding becomes available. We may continue to experience this seasonality in future periods, and our results of operations may be affected by it.

Historically, the Company had elected to be taxed under the provisions of Subchapter “S” of the Internal Revenue Code for federal tax purposes. As a result, the Company’s income had not been subject to U.S. federal income taxes or state income taxes in those states where the “S” Corporation status was recognized. No provision or liability for federal or state income tax had been provided in the Company’s consolidated financial statements, prior to the IPO on May 8, 2019, except for those states where the “S” Corporation status was not recognized or where states imposed a tax on “S” Corporations. The provision for income tax in the historical periods prior to the IPO consists of these state taxes and from certain foreign jurisdictions where the Company is subject to tax.

In connection with the IPO, the Company’s “S” Corporation status terminated, and the Company is now treated as a “C” Corporation under Subchapter C of the Internal Revenue Code. The revocation of the Company’s “S” Corporation election had a material impact on the Company’s results of operations, financial condition and cash flows. Going forward the effective tax rate will increase and net income will decrease as compared to the Company’s “S” Corporation tax years, since the Company is now subject to both U.S. federal and state corporate income taxes on its earnings.

Our revenue consists of both services provided by our employees and pass-through fees from subcontractors and other direct costs. Our Federal Solutions segment derives revenue primarily from the U.S. federal government and our Critical Infrastructure segment derives revenue primarily from government and commercial customers.

We recognize revenue for work performed under cost-plus, time-and-materials and fixed-price contracts as follows:

Under cost-plus contracts, we are reimbursed for allowable or otherwise defined costs incurred, plus a fee. The contracts may also include incentives for various performance criteria, including quality, timeliness, safety and cost-effectiveness. In addition, costs are generally subject to review by clients and regulatory audit agencies, and such reviews could result in costs being disputed as non-reimbursable under the terms of the contract.

Under time-and-materials contracts, hourly billing rates are negotiated and charged to clients based on the actual time spent on a project. In addition, clients reimburse actual out-of-pocket costs for other direct costs and expenses that are incurred in connection with the performance under the contract.

Under fixed-price contracts, clients pay an agreed fixed-amount negotiated in advance for a specified scope of work.

Please see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates” and “Note 2—Summary of Significant Accounting Polices” in the notes to our consolidated financial statements included in the Company’s Form 10-K for the year ended December 31, ~~2019~~2020 for a description of our policies on revenue recognition.

The table below presents the percentage of total revenue for each type of contract.

	Three Months Ended		Three Months Ended
	March 31, 2020	March 31, 2019	March 31, 2021	March 31, 2020
Fixed-price	31.8%	28.5%	26.3%	31.8%
Time-and-materials	26.0%	28.3%	27.4%	26.0%
Cost-plus	42.3%	43.2%	46.3%	42.3%

The amount of risk and potential reward varies under each type of contract. Under cost-plus contracts, there is limited financial risk, because we are reimbursed for all allowable costs up to a ceiling. However, profit margins on this type of contract tend to be lower than on time-and-materials and fixed-price contracts. Under time-and-materials contracts, we are reimbursed for the hours worked using the predetermined hourly rates for each labor category. In addition, we are typically reimbursed for other direct contract costs and expenses at cost. We assume financial risk on time-and-materials contracts because our labor costs may exceed the negotiated billing rates. Profit margins on well-managed time-and-materials contracts tend to be higher than profit margins on cost-plus contracts as long as we are able to staff those contracts with people who have an appropriate skill set. Under fixed-price contracts, we are required to deliver the objectives under the contract for a pre-determined price. Compared to time-and-materials and cost-plus contracts, fixed-price contracts generally offer higher profit margin opportunities because we receive the full benefit of any cost savings, but they also generally involve greater financial risk because we bear the risk of any cost overruns. In the aggregate, the contract type mix in our revenue for any given period will affect that period’s profitability. Over time, we have experienced a relatively stable contract mix.

Our recognition of ~~profit~~revenue on long-term contracts requires the use of assumptions related to transaction price and total cost of completion. Estimates are continually evaluated as work progresses and are revised when necessary. When a change in estimated cost or transaction price is determined to have an impact on contract profit, we record a positive or negative adjustment to revenue.

We conduct a portion of our business through joint ventures or similar partnership arrangements. For the joint ventures we control, we consolidate all the revenues and expenses in our consolidated statements of income (including revenues and expenses attributable to noncontrolling interests). For the joint ventures we do not control, we recognize equity in earnings (loss) of unconsolidated joint ventures. Our revenues included amounts related to services we provided

to our unconsolidated joint ventures for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 of $42.0 million and $40.4 million, ~~and $33.6 million,~~ respectively.

Operating costs and expenses primarily include direct costs of contracts and ~~indirect,~~selling, general and administrative expenses. Costs associated with compensation-related expenses for our people and facilities, which includes ESOP contribution expenses, are the most significant component of our operating expenses. Total ESOP contribution expense for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 was ~~$14.9~~$13.2 million and ~~$12.2~~$14.9 million, respectively, and is recorded in “Direct cost of contracts” and ~~“Indirect,~~“Selling, general and administrative expenses.” ~~We expect operating expenses to increase due to our anticipated growth and the incremental costs associated with being a public company.~~

Direct costs of contracts consist of direct labor and associated fringe benefits, indirect overhead, subcontractor ~~costs,~~and materials (“pass-through costs”), travel expenses and other expenses incurred to perform on contracts.

~~Indirect,~~Selling, general and administrative expenses (“IGSG&A”) include salaries and wages and fringe benefits of our employees not performing work directly for customers, facility costs and other costs related to these indirect functions.

Other income and expenses primarily consist of interest income, interest expense and other income, ~~net and interest and other expense associated with claims on long-term contracts.~~net.

Interest income primarily consists of interest earned on U.S. government money market funds.

Interest expense consists of interest expense incurred under our Senior Notes, Convertible Senior Notes, and Credit Agreement.

Other income, net primarily consists of gain or loss on sale of assets, sublease income and transaction gain or loss related to movements in foreign currency exchange rates.

The following table sets forth Adjusted EBITDA, Net Income Margin, and Adjusted EBITDA Margin for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019.~~2020.

	Three Months Ended						Three Months Ended
(U.S. dollars in thousands)	March 31, 2020			March 31, 2019			March 31, 2021			March 31, 2020
Adjusted EBITDA (1)	$	60,496		$	72,024		$	68,699		$	60,496
Net Income Margin (2)		1.5	%		1.5	%		1.6	%		1.5	%
Adjusted EBITDA Margin (3)		6.2	%		8.0	%		7.9	%		6.2	%

	Three Months Ended					Three Months Ended
	March 31, 2020			March 31, 2019		March 31, 2021		March 31, 2020
Net income attributable to Parsons Corporation	$	12,973		$	9,741	$	9,039	$	12,973
Interest expense, net		3,794			7,815		4,443		3,794
Income tax expense		5,084			1,886		5,375		5,084
Depreciation and amortization		32,409			30,591		34,673		32,409
Net income attributable to noncontrolling interests		1,398			3,645		4,975		1,398
Equity-based compensation		(7,721	)		3,850		6,980		(7,721	)
Transaction-related costs (a)		12,011			9,355		2,646		12,011
Restructuring (b)		(33	)		2,218		77		(33	)
Other (c)		581			2,923		491		581
Adjusted EBITDA	$	60,496		$	72,024	$	68,699	$	60,496

Adjusted EBITDA is a supplemental measure of our operating performance used by management and our board of directors to assess our financial performance both on a segment and on a consolidated basis. We discuss Adjusted EBITDA because our management uses this measure for business planning purposes, including to manage the business against internal projected results of operations and measure the performance of the business generally. Adjusted EBITDA is frequently used by analysts, investors and other interested parties to evaluate companies in our industry.

Adjusted EBITDA is not a GAAP measure of our financial performance or liquidity and should not be considered as an alternative to net income as a measure of financial performance or cash flows from operations as measures of liquidity, or any other performance measure derived in accordance with GAAP. We define Adjusted EBITDA as net income (loss) attributable to Parsons Corporation, adjusted to include net income (loss) attributable to noncontrolling interests and to exclude interest expense (net of interest income), provision for income taxes, depreciation and amortization and certain other items that we do not consider in our evaluation of ongoing operating performance. These other items include, among other things, impairment of goodwill, intangible and other assets, interest and other expenses recognized on litigation matters, ~~amortization of deferred gain resulting from sale-leaseback transactions,~~ expenses incurred in connection with acquisitions and other non-recurring transaction costs and expenses related to our corporate restructuring initiatives. Adjusted EBITDA should not be construed as an inference that our future results will be unaffected by unusual or non-recurring items. Additionally, Adjusted EBITDA is not intended to be a measure of free cash flow for management’s discretionary use, as it does not reflect tax payments, debt service requirements, capital expenditures and certain other cash costs that may recur in the future, including, among other things, cash requirements for working capital needs and cash costs to replace assets being depreciated and amortized. Management compensates for these limitations by relying on our GAAP results in addition to using Adjusted EBITDA supplementally. Our measure of Adjusted EBITDA is not necessarily comparable to similarly titled captions of other companies due to different methods of calculation.

The following table shows Adjusted EBITDA attributable to Parsons Corporation for each of our reportable segments and Adjusted EBITDA attributable to noncontrolling interests (in thousands):

	Three Months Ended				Variance						Three Months Ended				Variance
	March 31, 2020		March 31, 2019		Dollar			Percent			March 31, 2021		March 31, 2020		Dollar		Percent
Federal Solutions Adjusted EBITDA attributable to Parsons Corporation	$	31,617	$	40,599	$	(8,982	)		-22.1	%	$	31,982	$	31,617	$	365		1.2	%
Critical Infrastructure Adjusted EBITDA attributable to Parsons Corporation		27,357		27,676		(319	)		-1.2	%		31,657		27,357		4,300		15.7	%
Adjusted EBITDA attributable to noncontrolling interests		1,522		3,749		(2,227	)		-59.4	%		5,060		1,522		3,538		232.5	%
Total Adjusted EBITDA	$	60,496	$	72,024	$	(11,528	)		-16.0	%	$	68,699	$	60,496	$	8,203		13.6	%

The following table sets forth our results of operations for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 as a percentage of revenue.

	Three Months Ended						Three Months Ended
	March 31, 2020			March 31, 2019			March 31, 2021			March 31, 2020
Revenues		100	%		100	%		100	%		100	%
Direct costs of contracts		79.3	%		79.0	%		76.5	%		79.3	%
Equity in earnings of unconsolidated joint ventures		0.6	%		1.1	%		0.9	%		0.6	%
Indirect, general and administrative expenses		18.9	%		19.6	%
Operating income		2.4	%		2.5	%
Selling, general and administrative expenses								21.4	%		18.9	%
Operating income (loss)								2.9	%		2.4	%
Interest income		0.0	%		0.1	%		0.0	%		0.0	%
Interest expense		-0.4	%		-0.9	%		-0.5	%		-0.4	%
Other income, net		0.0	%		0.0	%		-0.2	%		0.0	%
(Interest and other expense) gain associated with claim on long-term contract		0.0	%		0.0	%		0.0	%		0.0	%
Total other income (expense)		-0.4	%		-0.9	%		-0.7	%		-0.4	%
Income before income tax expense		2.0	%		1.7	%
Income tax expense		-0.5	%		-0.2	%
Income (loss) before income tax expense								2.2	%		2.0	%
Income tax benefit (provision)								-0.6	%		-0.5	%
Net income including noncontrolling interests		1.5	%		1.5	%		1.6	%		1.5	%
Net income attributable to noncontrolling interests		-0.1	%		-0.4	%		-0.6	%		-0.1	%
Net income attributable to Parsons Corporation		1.3	%		1.1	%		1.0	%		1.3	%

	Three Months Ended				Variance					Three Months Ended				Variance
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		Dollar		Percent			March 31, 2021		March 31, 2020		Dollar			Percent
Revenue	$	970,993	$	904,405	$	66,588		7.4	%	$	874,697	$	970,993	$	(96,296	)		-9.9	%

Revenue ~~increased $66.6~~decreased $96.3 million for the three months ended March 31, ~~2020~~2021 when compared to the corresponding period last year, primarily due to ~~an increase~~a decrease in revenue in our Critical Infrastructure segment of $70.8 million and a decrease in our Federal Solutions segment of ~~$54.8 million and an increase in our Critical Infrastructure segment of $11.8~~$25.5 million. See “Segment Results” below for a further discussion.

	Three Months Ended				Variance					Three Months Ended				Variance
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		Dollar		Percent			March 31, 2021		March 31, 2020		Dollar			Percent
Direct costs of contracts	$	769,632	$	714,237	$	55,395		7.8	%	$	669,082	$	769,632	$	(100,550	)		-13.1	%

Direct cost of contracts ~~increased $55.4~~decreased $100.6 million for the three months ended March 31, ~~2020~~2021 when compared to the corresponding period last year, primarily due to ~~an increase~~decreases of ~~$49.7~~$71.7 million in our Critical Infrastructure segment and $28.9 million in our Federal Solutions ~~segment and an increase of $5.7 million in our Critical Infrastructure~~ segment. The ~~increase in our Federal Solutions segment was primarily from increased subcontractor and material costs. The increase~~decrease in our Critical Infrastructure segment was primarily due to ~~an increase~~a decrease in business volume, ~~offset by~~particularly programs with high levels of pass-through costs reaching substantial completion. The decrease in our Federal Solutions segment was primarily due to a decrease in ~~subcontractor costs.~~business volume.

	Three Months Ended				Variance						Three Months Ended				Variance
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		Dollar			Percent			March 31, 2021		March 31, 2020		Dollar		Percent
Equity in earnings of unconsolidated joint ventures	$	6,114	$	10,397	$	(4,283	)		-41.2	%	$	7,530	$	6,114	$	1,416		23.2	%

Equity in earnings of unconsolidated joint ventures ~~decreased $4.3~~increased $1.4 million for the three months ended March 31, ~~2020 when~~2021 compared to the corresponding period last ~~year. The decrease was~~year, primarily related to ~~reduced~~increased activity and margins in certain joint ventures, ~~as well as a~~partially offset by reduction in activity on ~~a significant joint venture that is substantially complete.~~ others.

	Three Months Ended				Variance					Three Months Ended				Variance
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		Dollar		Percent			March 31, 2021		March 31, 2020		Dollar		Percent
Indirect, general and administrative expenses	$	183,774	$	177,519	$	6,255		3.5	%
Selling, general and administrative expenses										$	187,522	$	183,774	$	3,748		2.0	%

~~Included in IG&A~~Selling, general and administrative expenses (“SG&A”) for the three months ended March 31, 2021 and March 31, 2020 ~~is a reduction of $7.7~~include $7.0 million and $(7.7) million, respectively, of compensation cost (income) related to equity-based awards. ~~For the three months ended March 31, 2019, IG&A included equity-based compensation cost of $3.9 million.~~

~~Most of these~~Equity awards issued prior to the Company’s IPO settle in cash and are remeasured to an updated fair value at each reporting period until the award is settled. Compensation cost is trued-up at each reporting period for changes in fair value pro-rated for the portion of the requisite service period rendered. Prior to the IPO on May 8, 2019, the fair value of a share of the Company’s common stock was established by the ESOP trustee. See “Note 19 – Fair Value of Financial Instruments” in the Company’s Form 10-K for the year ended December 31, ~~2019~~2020 for a further discussion of how a share of the Company’s common stock was valued prior to the IPO. Subsequent to the IPO, the share price of the Company’s common stock is based on quoted prices on the New York Stock Exchange.

The compensation cost related to the cash settled equity-based awards for the three months ended March 31, 2020 was impacted by the significant difference in the fair value of a share of the Company’s common stock at December 31, 2019 compared to the fair value of a share of the Company’s common stock at March 31, 2020.

Excluding the compensation costs discussed above, IGSG&A for the three months ended March 31, ~~2020~~2021 and March 31, ~~2019~~2020 was ~~$191.5~~$180.5 million and ~~$173.7~~$191.5 million, respectively.

The ~~increase~~decrease in IGSG&A of ~~$17.8~~$11.0 million, exclusive of equity compensation cost, for the three months ended March 31, ~~2020~~2021 when compared to the corresponding period last year was primarily due to ~~additional expenses of $8.2~~a $9.7 million ~~associated with business acquisitions, $8.0~~reduction in transaction-related costs and $3.1 million ~~due to a tax law change, $4.5 million from various overhead adjustments which occurred~~reduction in ~~the first quarter of 2019, but did not recur in the first quarter of 2020 and $3.5 million related to strategic growth initiatives and public company operating~~other costs. These ~~increases~~decreases were partially offset by a ~~$6.4~~$1.8 million ~~reduction~~increase in ~~transaction-related, restructuring and other non-recurring costs.~~intangible asset amortization.

	Three Months Ended						Variance						Three Months Ended						Variance
(U.S. dollars in thousands)	March 31, 2020			March 31, 2019			Dollar			Percent			March 31, 2021			March 31, 2020			Dollar			Percent
Interest income	$	228		$	477		$	(249	)		-52.2	%	$	98		$	228		$	(130	)		-57.0	%
Interest expense		(4,022	)		(8,292	)		4,270			-51.5	%		(4,541	)		(4,022	)		(519	)		12.9	%
Other income (expense), net		(452	)		41			(493	)		-1202.4	%		(1,791	)		(452	)		(1,339	)		296.2	%
Total other income (expense)	$	(4,246	)	$	(7,774	)	$	3,528			-45.4	%	$	(6,234	)	$	(4,246	)	$	(1,988	)		46.8	%

Interest income is related to interest earned on cash balances held. Interest expense is primarily due to debt related to our business ~~acquisitions.~~acquisitions and Convertible Senior Note. The amounts in other income (expense), net are primarily related to transaction gains and losses on foreign currency transactions and sublease income.

	Three Months Ended				Variance					Three Months Ended				Variance
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		Dollar		Percent			March 31, 2021		March 31, 2020		Dollar		Percent
Income tax expense	$	5,084	$	1,886	$	3,198		169.6	%	$	5,375	$	5,084	$	291		5.7	%

As described in “Note 11 – Income Taxes,” in the notes to our consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q, in connection with the Company’s IPO on May 8, 2019, the Company converted from an “S” Corporation to a “C” Corporation. On a pro forma basis, if the Company had been taxed as a “C” Corporation for the three months ended March 31, 2019, the pro forma effective tax rate would have been 31.29% and the pro forma income tax expense would have been $4.8 million. The Company’s effective tax rate was ~~26.13%~~27.7% and 26.1% and income tax expense was $5.4 million and $5.1 million for the three months ended March 31, ~~2020.~~2021 and March 31, 2020, respectively. The most significant ~~item~~items contributing to the change in the effective tax rate ~~relates~~relate to an increase of foreign losses which have no tax benefit and a ~~change in jurisdictional earnings.~~settlement of a state tax audit. The difference between the statutory U.S. federal income tax rate of 21.0% and the effective tax rate for

the quarter ended March 31, ~~2020~~2021 primarily relates to state income ~~taxes.~~

~~The termination of the “S” Corporation status was treated as~~taxes and a ~~change in~~recorded valuation allowance on foreign tax ~~status for Accounting Standards Codification 740, Income Taxes. These rules require that the deferred tax effects of a change in tax status to be recorded~~credits, partially offset by benefits related to income ~~from continuing operations on the date the “S” Corporation status terminates. During the year ended December 31, 2019, the Company recorded a deferred~~attributable to noncontrolling interest and federal research tax benefit of $94 million for the estimated effect of the change in tax status, relating to the recognition of net deferred tax assets for temporary differences in existence on the date of conversion to a “C” Corporation. This estimated amount is subject to additional revision upon filing of the 2019 tax returns.credits.

We evaluate segment operating performance using segment revenue and segment Adjusted EBITDA attributable to Parsons Corporation. Adjusted EBITDA attributable to Parsons Corporation is Adjusted EBITDA excluding Adjusted EBITDA attributable to noncontrolling interests. Presented above, in this Management’s Discussion and Analysis of Financial Condition and Results of Operations, is a discussion of our definition of Adjusted EBITDA, how we use this metric, why we present this metric and the material limitations on the usefulness of this metric. See “Note 18—Segments Information” in the notes to the consolidated financial statements in this Form 10-Q for further discussion regarding our segment Adjusted EBITDA attributable to Parsons Corporation.

The following table shows Adjusted EBITDA attributable to Parsons Corporation for each of our reportable segments and Adjusted EBITDA attributable to noncontrolling interests:

	Three Months Ended				Three Months Ended
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		March 31, 2021		March 31, 2020
Federal Solutions Adjusted EBITDA attributable to Parsons Corporation	$	31,617	$	40,599	$	31,982	$	31,617
Critical Infrastructure Adjusted EBITDA attributable to Parsons Corporation		27,357		27,676		31,657		27,357
Adjusted EBITDA attributable to noncontrolling interests		1,522		3,749		5,060		1,522
Total Adjusted EBITDA	$	60,496	$	72,024	$	68,699	$	60,496

	Three Months Ended				Variance						Three Months Ended				Variance
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		Dollar			Percent			March 31, 2021		March 31, 2020		Dollar			Percent
Revenue	$	477,571	$	422,812	$	54,759			13.0	%	$	452,069	$	477,571	$	(25,502	)		-5.3	%
Adjusted EBITDA attributable to Parsons Corporation	$	31,617	$	40,599	$	(8,982	)		-22.1	%	$	31,982	$	31,617	$	365			1.2	%

The ~~increase~~decrease in Federal Solutions revenue for the three months ended March 31, ~~2020~~2021 compared to the corresponding ~~period~~periods last year was primarily due to ~~an increase~~a decrease in business ~~volume from new and existing contracts.~~

The ~~decrease~~increase in Federal Solutions Adjusted EBITDA attributable to Parsons Corporation for the three months ended March 31, ~~2020~~2021 compared to the corresponding period last year was primarily ~~due~~related to ~~generally lower profit~~higher profits margins ~~driven by an increase in volume on contracts with subcontractor~~ and ~~material costs. Also, contributing to the decrease in Adjusted EBITDA attributable to Parsons Corporation, was an increase in IG&A from business~~ acquisitions, ~~and corporate allocated costs. IG&A, in the first quarter of 2019, included various positive overhead adjustments that did not recur in the first quarter of 2020. These decreases were primarily~~ offset by ~~an increase in~~lower business ~~volume from new awards and business acquisitions.~~ volume.

	Three Months Ended				Variance						Three Months Ended				Variance
(U.S. dollars in thousands)	March 31, 2020		March 31, 2019		Dollar			Percent			March 31, 2021		March 31, 2020		Dollar			Percent
Revenue	$	493,422	$	481,593	$	11,829			2.5	%	$	422,628	$	493,422	$	(70,794	)		-14.3	%
Adjusted EBITDA attributable to Parsons Corporation	$	27,357	$	27,676	$	(319	)		-1.2	%	$	31,657	$	27,357	$	4,300			15.7	%

The ~~increase~~decrease in Critical Infrastructure revenue for the three months ended March 31, ~~2020~~2021 compared to the corresponding ~~period~~periods last year was primarily due to ~~an increase~~a decrease in business volume ~~from existing contracts.~~on contracts with pass-through revenue.

The increase in Adjusted EBITDA attributable to Parsons Corporation in Critical Infrastructure ~~was substantially unchanged~~ for the three months ended March 31, ~~2020 compared~~2021 was primarily related to ~~the corresponding period last year. Impacting Adjusted EBITDA attributable to Parsons Corporation for the three months ended March 31, 2020 compared to the corresponding period last year was~~a decrease in SG&A, an increase in ~~business volume from higher margin contracts, offset in part by, a decrease~~contract profitability and an increase in equity in earnings of unconsolidated joint ~~ventures and an increase in IG&A.~~ventures.

~~Historically, we have financed~~We finance our operations and capital expenditures ~~and satisfied redemptions of ESOP interests~~ through a combination of internally generated cash from operations, our Senior Notes, Convertible Senior Notes, and ~~from~~periodic borrowings under our Revolving Credit Facility.

Generally, cash provided by operating activities has been adequate to fund our operations. Due to fluctuations in our cash flows and growth in our operations, it may be necessary from time to time in the future to borrow under our Credit Agreement to meet cash demands. Our management regularly monitors certain liquidity measures to monitor performance. We calculate our available liquidity as a sum of cash and cash equivalents from our consolidated balance sheet plus the amount available and unutilized on our Credit Agreement.

There are likely to be certain impacts in our ability to collect accounts receivable as a result of the economic impacts from the COVID-19 pandemic. Accounts receivable reflect amounts due from both commercial and government customers. Our commercial customers are comprised principally of large, well-known and well-established companies. Our government customers are comprised principally of national, state and local agencies in the U.S. and Middle East. With respect to the Company’s government customers, we don’t expect there to be a risk of non-payment. We do anticipate payment delays with the Company’s government customers in the Middle East due to the inability of most of the government’s administrative employees to perform work from home while quarantined. With respect to the Company’s commercial customers, we generally don’t expect there to be a risk of non-payment but do anticipate an unknown level of payment delays.

As of March 31, ~~2020,~~2021, we believe we have adequate liquidity and capital resources to fund our operations, support our debt service and support our ongoing acquisition strategy for at least the next twelve months based on the liquidity from cash provided by our operating activities, cash and cash equivalents on-hand and our borrowing capacity under our Revolving Credit ~~Facility, which totals $440 million as of March 31, 2020.~~Facility. We do not ~~currently~~ anticipate that the COVID-19 ~~pandemic related~~pandemic-related economic impacts will impair ~~the Company’s~~our ability to continue to maintain compliance with ~~its~~our debt covenants or access available borrowing capacity from our banks.

Cash received from customers, either from the payment of invoices for work performed or for advances in excess of revenue recognized, is our primary source of cash. We generally do not begin work on contracts until funding is appropriated by the customers. Billing timetables and payment terms on our contracts vary based on a number of factors, including whether the contract type is cost-plus, time-and-materials, or fixed-price. We generally bill and collect cash more frequently under cost-plus and time-and-materials contracts, as we are authorized to bill as the costs are incurred or work is performed. In contrast, we may be limited to bill certain fixed-price contracts only when specified milestones, including deliveries, are achieved. A number of our contracts may provide for performance-based payments, which allow us to bill and collect cash prior to completing the work.

Accounts receivable is the principal component of our working capital and is generally driven by revenue growth. Accounts receivable reflects amounts billed to our clients as of each balance sheet date and receivable amounts that are currently due but unbilled. The total amount of our accounts receivable can vary significantly over time, but is generally sensitive to revenue levels. Net days sales outstanding, which we refer to as net DSO, is calculated by dividing (i) (accounts receivable plus contract assets) less (contract liabilities plus accounts payable) by (ii) average revenue per day (calculated by dividing trailing twelve months revenue by the number of days in that period). We focus on collecting outstanding receivables to reduce Net DSO and working capital. Net DSO was 71 days at March 31, 2021 and 64 days at March 31, 2020 and 61 days at March 31, 2019. The increase in DSO was primarily in the Federal Solutions segment driven by certain administrative activities driven by a customer which have delayed the Company’s issuance of invoices.2020. Our working capital (current assets less current liabilities) was ~~$450.6~~$691.5 million at March 31, ~~2020~~2021 and ~~$382.0~~$655.7 million at December 31, ~~2019.~~2020.

Our cash, cash equivalents and restricted cash decreased by ~~$68.7~~$87.8 million to ~~$126.7~~$399.4 million at March 31, ~~2020~~2021 from ~~$195.4~~$487.2 million at December 31, ~~2019.~~2020.

The following table summarizes our sources and uses of cash over the periods presented (in thousands):

	Fiscal Year Ended						Three Months Ended
	March 31, 2020			March 31, 2019			March 31, 2021			March 31, 2020
Net cash used in operating activities	$	(118,983	)	$	(60,108	)	$	(65,965	)	$	(118,983	)
Net cash used in investing activities		(12,202	)		(301,059	)		(11,045	)		(12,202	)
Net cash provided by financing activities		63,712			210,623
Net cash (used in) provided by financing activities								(11,224	)		63,712
Effect of exchange rate changes		(1,179	)		(182	)		430			(1,179	)
Net decrease in cash and cash equivalents	$	(68,652	)	$	(150,726	)
Net decrease in cash, cash equivalents and restricted cash							$	(87,804	)	$	(68,652	)

Net cash used in operating activities consists primarily of net income (loss) adjusted for noncash items, such as: equity in earnings (loss) of unconsolidated joint ventures, contributions of treasury stock, depreciation and amortization of property and equipment and intangible assets, and provisions for doubtful ~~accounts, amortization of deferred gains, and impairment charges.~~accounts. The timing between the conversion of our billed and unbilled receivables into cash from our customers and disbursements to our employees and vendors is the primary driver of changes in our working capital. Our operating cash flows are primarily affected by our ability to invoice and collect from our clients in a timely manner, our ability to manage our vendor payments and the overall profitability of our contracts.

Net cash used in operating activities ~~increased $58.9 million to $119.0~~decreased $53.0 million for the three months ended March 31, ~~2020~~2021 compared to ~~$60.1 million of cash used in operating activities for~~ the three months ended March 31, ~~2019.~~2020. The ~~increase~~change in net cash used in operating activities is ~~primarily~~ from a ~~$40.7~~$6.9 million increase in net income after adjusting for non-cash items, a $23.8 million change in other long-term liabilities, and a $22.3 million decrease in cash outflows from our working capital accounts (primarily infrom accounts receivable and contract ~~assets) and a change of $30.8 million in other long-term~~ liabilities ~~primarily driven by the payment of long-term employee incentives~~ offset by ~~a $12.6 million increase in net income after adjusting for non-cash items.~~accrued expenses, accounts payable and contract assets).

Net cash used in investing activities consists primarily of cash flows associated with capital expenditures, joint ventures and business acquisitions.

Net cash used in investing activities decreased ~~$288.9 million to $12.2~~$1.2 million for the three months ended March 31, ~~2020,~~2021, when compared to ~~$301.1 million for~~ the three months ended March 31, ~~2019,~~2020, primarily due to ~~the use~~a decrease in cash used for capital expenditures of ~~$287.5~~$8.2 million, offset by proceeds from sale of investments in unconsolidated joint ventures, net of ~~cash acquired, for the acquisition~~return of ~~OGSystems on January 7, 2019.~~investments in unconsolidated joint ventures of $7.8 million. The Company had no business acquisitions ~~activity~~ during the three months ended March 31, 2021 and March 31, 2020.

Net cash provided by financing activities is primarily associated with proceeds from debt, the repayment thereof, and distributions to noncontrolling interests.

Net cash provided by financing activities decreased ~~$146.9 million to $63.7~~$74.9 million for the three months ended March 31, ~~2020, when~~2021 compared to ~~$210.6 million for~~ the three months ended March 31, ~~2019,~~2020. The change in cash flows from financing activities is primarily due to ~~lower~~no borrowings ~~net of repayments of $165.0 million,~~ and ~~a decrease in~~larger distributions to noncontrolling ~~interests of $18.6 million.~~interests.

We also have in place several secondary bank credit lines for issuing letters of credit, principally for foreign contracts, to support performance and completion guarantees. Letters of credit commitments outstanding under these bank lines aggregated ~~$193.5~~$203.9 million as of March 31, ~~2020, including $44.9 million of letters~~2021. Letters of credit outstanding under the Credit ~~Agreement. Total letters of credit outstanding at March 31, 2020 are $238.4~~Agreement total $45.3 million.

See the information set forth in “Note 3—Summary of Significant Accounting Policies—Recently Adopted Accounting Pronouncements” in the notes to our consolidated financial statements.

As of March 31, ~~2020,~~2021, we have no off-balance sheet arrangements that have or are reasonably likely to have a material current or future effect on our financial condition, changes in financial condition, revenue or expenses, results of operations, liquidity, capital expenditures or capital resources.

We are exposed to interest rate risks related to the Company’s Revolving Credit Facility. As of March 31, ~~2020, we had $65 million~~2021, there were no amounts outstanding under the Revolving Credit Facility. Borrowings under the Credit Facility bear interest, at the Company’s option, at either the Base Rate (as defined in the Credit Agreement), plus an applicable margin, or LIBOR plus an applicable margin. The applicable margin for Base Rate loans is a range of 0.125% to 1.00% and the applicable margin for LIBOR loans is a range of 1.125% to 2.00%, both based on the leverage ratio of the Company at the end of each fiscal quarter. The rates at March 31, ~~2020~~2021 and December 31, ~~2019~~2020 were ~~2.02%~~1.86% and ~~3.02%~~1.87%, respectively. Based on the $65 million outstanding under the Credit Agreement, an increase or decrease of 100 basis points in the Base Rate and/or LIBOR rate would result in an increase or decrease in annual interest expense of approximately $0.7 million.

We are exposed to foreign currency exchange rate risk resulting from our operations outside of the U.S. We limit exposure to foreign currency fluctuations in most of our contracts through provisions that require client payments in currencies corresponding to the currency in which costs are incurred. As a result of this natural hedge, we generally do not need to hedge foreign currency cash flows for contract work performed.

Our management carried out, as of March 31, ~~2020,~~2021, with the participation of our Chief Executive Officer and our Chief Financial Officer, an evaluation of the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)). Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of March 31, ~~2020 ,~~2021, our disclosure controls and procedures were effective to provide reasonable assurance that material information required to be disclosed by us in reports we file under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms and that information required to be disclosed by us in the reports we file or submit 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.

During the first quarter of ~~2020,~~2021, there were no changes to our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

The information required by this Item 1 is included in “Note 12 – Contingencies” included in the Notes to Consolidated Financial Statements appearing under Part I, Item 1 of this Form 10-Q which is incorporated herein by reference.

There have been no material changes from our Risk Factors disclosed in the Company’s Form 10-K for the year ended December 31, ~~2019~~2020 other than as set forth below. See also our updates for the COVID-19 pandemic included in Management’s Discussion and Analysis of Financial Condition and Results of Operations of this Form 10-Q.

Our business, results of operations, financial condition, cash flows and stock price can be adversely affected by pandemics, epidemics or other public health emergencies, such as the recent outbreak of COVID-19 which has spread from China to many other countries including the United States. In March 2020, the World Health Organization characterized COVID-19 as a pandemic, and the President of the United States declared the COVID-19 outbreak a national emergency. The outbreak has resulted in governments around the world implementing increasingly stringent measures to help control the spread of the virus, including quarantines, “shelter in place” and “stay at home" orders, travel restrictions, business curtailments, school closures, and other measures. In addition, governments and central banks in several parts of the world have enacted fiscal and monetary stimulus measures to counteract the impacts of COVID-19.

Although we have continued our operations consistent with federal guidelines and state and local orders, the outbreak of COVID-19 and any preventive or protective actions taken by governmental authorities may have a material adverse effect on our operations, employees and customers, including business shutdowns or disruptions. The extent to which COVID-19 may adversely impact our business depends on future developments, which are highly uncertain and unpredictable, depending upon the severity and duration of the outbreak and the effectiveness of actions taken globally to contain or mitigate its effects. Any resulting financial impact cannot be estimated reasonably at this time but may materially adversely affect our ability to collect accounts receivables and our business, results of operations, financial condition and cash flows. Even after the COVID-19 pandemic has subsided, we may experience materially adverse impacts to our business due to any resulting economic recession or depression. Additionally, concerns over the economic impact of COVID-19 have caused extreme volatility in financial and other capital markets which has and may continue to adversely impact our stock price and our ability to access capital markets. To the extent the COVID-19 pandemic adversely affects our business and financial results, it may also have the effect of heightening many of the other risks described in our Form 10-K for the year ended December 31, ~~2019,~~2020, such as those relating to government spending and priorities.

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.

Delaware	95-3232481
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

5875 Trinity Parkway #300 Centreville, Virginia	20120
(Address of principal executive offices)	(Zip Code)

		Page
PART I.	FINANCIAL INFORMATION	1
Item 1.	Financial Statements (Unaudited)	1
	Consolidated Balance Sheets	1
	Consolidated Statements of Income	2
	Consolidated Statements of Comprehensive Income	3
	Consolidated Statements of Cash Flows	4
	Consolidated Statements of Shareholders’ Equity ~~(Deficit)~~	5
	Notes to Unaudited Consolidated Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	2425
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	3738
Item 4.	Controls and Procedures	3738
PART II.	OTHER INFORMATION	3839
Item 1.	Legal Proceedings	3839
Item 1A.	Risk Factors	3839
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	3839
Item 3.	Defaults Upon Senior Securities	3839
Item 4.	Mine Safety Disclosures	3839
Item 5.	Other Information	3839
Item 6.	Exhibits	3940
	Signatures	4041

	Three Months Ended
	March 31, 2020		March 31, 2019
Pro forma revenue	$	970,993	$	906,360
Pro forma net income including noncontrolling interests	$	14,846	$	17,458

	Amount
Cash and cash equivalents	$	5,925
Accounts receivable		5,587
Prepaid expenses and other current assets		5,727
Property and equipment		1,205
Right of use assets, operating leases		5,228
Goodwill		125,091
Intangible assets		76,200
Accounts payable		(1,567	)
Accrued expenses and other current liabilities		(4,025	)
Short-term lease liabilities, operating leases		(545	)
Long-term lease liabilities, operating leases		(4,683	)
Net assets acquired	$	214,143

	Three Months Ended
	March 31, 2020		March 31, 2019
Pro forma revenue	$	970,993	$	910,997
Pro forma net income including noncontrolling interests	$	15,736	$	10,845

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

	Amount
Cash and cash equivalents	$	7,006
Accounts receivable		18,163
Contract assets		8,350
Prepaid expenses and other current assets		3,036
Property and equipment		5,114
Right of use assets, operating leases		10,788
Goodwill		211,524
Intangible assets		74,950
Accounts payable		(7,464	)
Accrued expenses and other current liabilities		(9,845	)
Contract liabilities		(300	)
Short-term lease liabilities, operating leases		(1,915	)
Long-term lease liabilities, operating leases		(8,873	)
Deferred tax liabilities		(1,694	)
Net assets acquired	$	308,840

	Amount
Cash and cash equivalents	$	5,772
Accounts receivable		9,904
Contract assets		9,747
Prepaid expenses and other current assets		4,307
Property and equipment		4,085
Right of use assets, operating leases		8,826
Goodwill		183,540
Intangible assets		92,300
Other noncurrent assets		10
Accounts payable		(5,450	)
Accrued expenses and other current liabilities		(7,147	)
Contract liabilities		(1,300	)
Short-term lease liabilities, operating leases		(805	)
Income tax payable		(1,178	)
Deferred tax liabilities		(1,195	)
Long-term lease liabilities, operating leases		(8,021	)
Other long-term liabilities		(1,015	)
Net assets acquired	$	292,380

Tranche	Debt Amount		Maturity Date	Interest Rates
Senior Note, Series A	$	50,000	July 15, 2021		4.44	%
Senior Note, Series B		100,000	July 15, 2024		4.98	%
Senior Note, Series C		60,000	July 15, 2026		5.13	%
Senior Note, Series D		40,000	July 15, 2029		5.38	%

Exhibit Number		Description

31.1*		Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2*		Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted 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.

101		The following financial statements from the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, ~~2020,~~2021, formatted in Inline XBRL: (i) Consolidated Balance Sheets, (ii) Consolidated Statements of Earnings, (iii) Consolidated Statements of Comprehensive Income (Loss), (iv) Consolidated Statements of Stockholders’ Equity, (v) Consolidated Statements of Cash Flows and (vi) Notes to Consolidated Financial Statements, tagged as blocks of text and including detailed tags.

104		~~The cover page from the Company’s Quarterly Report on Form 10-Q for the quarter ended December 27, 2019,~~Cover Page Interactive Data File (formatted as ~~Inline~~inline XBRL ~~and~~with applicable taxonomy extension information contained in ~~Exhibit 101)~~Exhibits 101).

	~~Company Name~~Parsons Corporation

Date: May ~~6, 2020~~5, 2021	By:	/s/ George L. Ball
		George L. Ball
		Chief Financial Officer
		(Principal Financial Officer)