UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549 

__________________________________________

FORM 10-Q 

__________________________________________

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2021

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission File No. 000-49604 

__________________________________________

ManTech International Corporation

(Exact Name of Registrant as Specified in its Charter) 

__________________________________________

Delaware			22-1852179
State or Other Jurisdiction of Incorporation or Organization			I.R.S. Employer Identification No.
2251 Corporate Park Drive	Herndon	VA	20171
Address of Principal Executive Offices			Zip Code

(703) 218-6000

Registrant’s Telephone Number, Including Area Code 

__________________________________________

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Class A Common Stock	MANT	Nasdaq

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

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

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

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐  (Do not check if a smaller reporting company)	Smaller reporting company	☐
Emerging growth company	☐

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

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

As of November 1, 2021 there were 27,562,407 shares outstanding of our Class A common stock and 13,176,695 shares outstanding of our Class B common stock.

TABLE OF CONTENTS

		Page No.
PART I - FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Condensed Consolidated Balance Sheets as of September 30, 2021 and December 31, 2020	3
	Condensed Consolidated Statements of Income for the Three and Nine Months Ended September 30, 2021 and 2020	4
	Condensed Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2021 and 2020	5
	Condensed Consolidated Statements of Changes in Stockholders' Equity for the Three and Nine Months Ended September 30, 2021 and 2020	6
	Condensed Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2021 and 2020	7
	Notes to Condensed Consolidated Financial Statements	8
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	17
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	24
Item 4.	Controls and Procedures	24
Part II - OTHER INFORMATION
Item 1.	Legal Proceedings	25
Item 6.	Exhibits	25

2

PART I – FINANCIAL INFORMATION

Item 1.Financial Statements

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(In Thousands Except Share and Per Share Amounts)

	(unaudited)
	September 30, 2021		December 31, 2020
ASSETS
Cash and cash equivalents	$	145,414	$	41,193
Receivables—net	389,403		400,621
Prepaid expenses	30,752		26,243
Taxes receivable—current	17,838		21,968
Other current assets	8,339		6,354
Total Current Assets	591,746		496,379
Goodwill	1,238,090		1,237,894
Other intangible assets—net	182,234		202,231
Property and equipment—net	127,042		121,296
Operating lease right of use assets	79,266		94,825
Employee supplemental savings plan assets	40,996		37,848
Investments	11,555		11,549
Other assets	13,232		11,642
TOTAL ASSETS	$	2,284,161	$	2,213,664
LIABILITIES AND STOCKHOLDERS' EQUITY
LIABILITIES
Accounts payable	$	164,387	$	142,360
Accrued salaries and related expenses	121,767		123,953
Contract liabilities	34,442		37,218
Operating lease obligations—current	31,291		30,105
Accrued expenses and other current liabilities	8,924		15,177
Total Current Liabilities	360,811		348,813
Deferred income taxes	152,586		141,638
Operating lease obligations—long term	67,306		80,242
Accrued retirement	34,841		36,310
Long-term debt	—		15,000
Other long-term liabilities	12,215		12,249
TOTAL LIABILITIES	627,759		634,252
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock, Class A—$0.01 par value; 150,000,000 shares authorized; 27,803,379 and 27,538,474 shares issued at September 30, 2021 and December 31, 2020; 27,559,266 and 27,294,361 shares outstanding at September 30, 2021 and December 31, 2020	278		275
Common stock, Class B—$0.01 par value; 50,000,000 shares authorized; 13,176,695 and 13,176,695 shares issued and outstanding at September 30, 2021 and December 31, 2020	132		132
Additional paid-in capital	562,159		545,717
Treasury stock, 244,113 and 244,113 shares at cost at September 30, 2021 and December 31, 2020	(9,158)		(9,158)
Retained earnings	1,103,243		1,042,676
Accumulated other comprehensive loss	(252)		(230)
TOTAL STOCKHOLDERS' EQUITY	1,656,402		1,579,412
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	2,284,161	$	2,213,664

See notes to condensed consolidated financial statements.

3

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(In Thousands Except Per Share Amounts)

	(unaudited) Three months ended September 30,				(unaudited) Nine months ended September 30,
	2021		2020		2021		2020
REVENUE	$	637,821	$	636,196	$	1,919,623	$	1,879,600
Cost of services	536,205		538,000		1,631,790		1,597,764
General and administrative expenses	48,343		58,855		143,477		164,011
OPERATING INCOME	53,273		39,341		144,356		117,825
Interest expense	(606)		(310)		(1,326)		(1,597)
Interest income	36		40		115		227
Other (expense), net	(92)		(29)		(225)		(51)
INCOME FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY METHOD INVESTMENTS	52,611		39,042		142,920		116,404
Provision for income taxes	(14,655)		(9,303)		(36,026)		(28,037)
Equity in losses of unconsolidated subsidiaries	—		—		(1)		(1)
NET INCOME	$	37,956	$	29,739	$	106,893	$	88,366
BASIC EARNINGS PER SHARE:
Class A common stock	$	0.93	$	0.74	$	2.63	$	2.19
Class B common stock	$	0.93	$	0.74	$	2.63	$	2.19
DILUTED EARNINGS PER SHARE:
Class A common stock	$	0.93	$	0.73	$	2.61	$	2.18
Class B common stock	$	0.93	$	0.73	$	2.61	$	2.18

See notes to condensed consolidated financial statements.

4

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In Thousands)

	(unaudited) Three months ended September 30,				(unaudited) Nine months ended September 30,
	2021		2020		2021		2020
NET INCOME	$	37,956	$	29,739	$	106,893	$	88,366
OTHER COMPREHENSIVE LOSS:
Translation adjustments, net of tax	(3)		(19)		(22)		(44)
Total other comprehensive loss	(3)		(19)		(22)		(44)
COMPREHENSIVE INCOME	$	37,953	$	29,720	$	106,871	$	88,322

See notes to condensed consolidated financial statements.

5

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

(In Thousands)

	(unaudited) Three months ended September 30,				(unaudited) Nine months ended September 30,
	2021		2020		2021		2020
Common Stock, Class A
At beginning of period	$	278	$	274	$	275	$	272
Stock option exercises	—		—		2		1
Stock-based compensation expense	—		—		1		1
At end of period	278		274		278		274
Common Stock, Class B
At beginning of period	132		132		132		132
At end of period	132		132		132		132
Additional Paid-In Capital
At beginning of period	557,211		535,464		545,717		525,851
Stock-based compensation expense	3,960		3,023		11,515		8,532
Stock option exercises	1,587		1,036		8,019		5,917
Payment consideration to tax authority on employees' behalf	(599)		(237)		(3,092)		(1,014)
At end of period	562,159		539,286		562,159		539,286
Treasury Stock, at cost
At beginning of period	(9,158)		(9,158)		(9,158)		(9,158)
At end of period	(9,158)		(9,158)		(9,158)		(9,158)
Retained Earnings
At beginning of period	1,080,762		1,006,624		1,042,676		973,767
Net income	37,956		29,739		106,893		88,366
Dividends	(15,475)		(12,915)		(46,326)		(38,685)
At end of period	1,103,243		1,023,448		1,103,243		1,023,448
Accumulated Other Comprehensive Loss
At beginning of period	(249)		(247)		(230)		(222)
Translation adjustments, net of tax	(3)		(19)		(22)		(44)
At end of period	(252)		(266)		(252)		(266)
Total Stockholders' Equity	$	1,656,402	$	1,553,716	$	1,656,402	$	1,553,716

See notes to condensed consolidated financial statements.

6

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In Thousands)

	(unaudited) Nine months ended September 30,
	2021		2020
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$	106,893	$	88,366
Adjustments to reconcile net income to net cash flow from (used in) operating activities:
Depreciation and amortization	57,438		51,281
Noncash lease expense	27,002		20,738
Stock-based compensation expense	11,516		8,533
Deferred income taxes	10,948		11,127
Change in allowance for bad debts	(3,499)		5,244
Contract loss reserve	—		(372)
Change in assets and liabilities—net of effects from acquired businesses:
Receivables—net	14,638		10,877
Taxes receivable—current	4,130		(5,825)
Prepaid expenses	(3,843)		(7,838)
Other current assets	1,180		(1,333)
Employee supplemental savings plan asset	(3,375)		(2,042)
Other long-term assets	(3,775)		(1,939)
Accounts payable	24,850		23,490
Operating lease obligations	(26,465)		(22,102)
Accrued expenses and other current liabilities	(6,753)		(925)
Contract liabilities	(2,292)		12,438
Accrued salaries and related expenses	(2,123)		29,812
Accrued retirement	(1,469)		(2,328)
Other long-term liabilities	—		100
Other	49		(169)
Net cash flow from operating activities	205,050		217,133
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Purchases of property and equipment	(41,199)		(53,685)
Proceeds from corporate owned life insurance	227		4,137
Investment in capitalized software	—		(5,193)
Proceeds from sale of property and equipment	—		869
Net cash (used in) investing activities	(40,972)		(53,872)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Borrowing under credit agreement	207,500		285,500
Repayments under credit agreement	(222,500)		(322,000)
Dividends paid	(46,332)		(38,689)
Proceeds from exercise of stock options	8,020		5,918
Debt issuance costs	(3,315)		—
Payment consideration to tax authority on employees' behalf	(3,092)		(1,014)
Principal paid on financing leases	(138)		(118)
Net cash (used in) financing activities	(59,857)		(70,403)
NET CHANGE IN CASH AND CASH EQUIVALENTS	104,221		92,858
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	41,193		8,854
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	145,414	$	101,712
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest	$	1,008	$	1,568
Cash paid for income taxes, net of refunds	$	20,789	$	22,619
Noncash investing and financing activities:
Operating lease obligations arising from obtaining right of use assets	$	14,685	$	6,459
Finance lease obligations arising from obtaining right of use assets	$	141	$	107
Noncash investing activities	$	(319)	$	5,480

See notes to condensed consolidated financial statements.

7

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

September 30, 2021

UNAUDITED

1.Description of the Business

ManTech International Corporation (depending on the circumstances, “ManTech” “Company” “we” “our” “ours” or “us”) provides mission-focused technology solutions and services for U.S. defense, intelligence community and federal civilian agencies. We excel in full-spectrum cyber, data collection & analytics, enterprise information technology (IT) and systems engineering and software application development solutions that support national and homeland security.

2.Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and note disclosures normally included in the annual financial statements, prepared in accordance with accounting principles generally accepted in the U.S., have been condensed or omitted pursuant to those rules and regulations. The preparation of these condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. We recommend that you read these condensed consolidated financial statements in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, previously filed with the SEC. We believe that the condensed consolidated financial statements in this Form 10-Q reflect all adjustments that are necessary to fairly present the financial position, results of operations and cash flows for the interim periods presented. The results of operations for such interim periods are not necessarily indicative of the results that can be expected for the full year.

We classify indirect cost incurred as cost of services and general and administrative expenses in the same manner as such costs are defined in our disclosure statements under U.S. Government Cost Accounting Standards. Effective January 1, 2021, we updated our disclosure statements with the Defense Contract Management Agency, resulting in certain costs being classified differently either as cost of services or as general and administrative expenses on a prospective basis. This change has caused a net increase in the reported cost of services and a net decrease in reported general and administrative expenses in 2021 as compared to 2020; however, total operating costs were not affected by this change.

3.Revenue from Contracts with Customers

We derive revenue from contracts with customers primarily from contracts with the U.S. government in the areas of defense, intelligence, homeland security and other federal civilian agencies. Substantially all of our revenue is derived from services and solutions provided to the U.S. government or to prime contractors supporting the U.S. government, including services by our employees and our subcontractors, and solutions that include third-party hardware and software that we purchase and integrate as a part of our overall solutions. Customer requirements may vary from period-to-period depending on specific contract and customer requirements. We provide our services and solutions under three types of contracts: cost-reimbursable, fixed-price and time-and-materials. Under cost-reimbursable contracts, we are reimbursed for costs that are determined to be reasonable, allowable and allocable to the contract and paid a fee representing the profit margin negotiated between us and the contracting agency, which may be fixed or performance based. Under fixed-price contracts, we perform specific tasks for a fixed price. Fixed-price contracts may include either a product delivery or specific service performance over a defined period. Under time-and-materials contracts, we are reimbursed for labor at fixed hourly rates and are generally reimbursed separately for allowable materials and expenses at cost.

For contracts that do not meet the criteria to measure performance as a right to invoice under the series guidance, we utilize an Estimate at Completion process to measure progress toward completion. We typically estimate progress towards completion based on cost incurred or direct labor incurred. As part of this process, we review information including, but not limited to, any outstanding key contract matters, progress towards completion and the related program schedule, identified risks and opportunities and the related changes in estimates of revenue and costs. The risks and opportunities include judgments about the ability and cost to achieve the contract milestones and other technical contract requirements. We make assumptions and estimates regarding labor productivity and availability, the complexity of the work to be performed, the availability of materials, the length of time to complete the performance obligation, execution by our subcontractors, the availability and timing of funding from our customer and overhead cost rates, among other variables. A significant change in one or more of these estimates could affect the timing in which we recognize revenue on our contracts. For the three months ended September 30, 2021 and 2020, the aggregate impact of adjustments in contract estimates increased our revenue by $3.7 million

8

and $4.3 million, respectively. For nine months ended September 30, 2021 and 2020, the aggregate impact of adjustments in contract estimates increased our revenue by $8.1 million and $9.4 million, respectively.

We have one reportable segment. Our U.S. government customers typically exercise independent decision-making and contracting authority. Offices or divisions within an agency or department of the U.S. government may directly, or through a prime contractor, use our services as a separate customer as long as the customer has independent decision-making and contracting authority within its organization. We treat sales to U.S. government customers as sales within the U.S. regardless of where the services are performed. We generated 100% and 99% of our revenue from sales in the U.S. for each of the three months ended September 30, 2021 and 2020, respectively. We generated 100% and 99% of our revenue from sales in the U.S. for each of the nine months ended September 30, 2021 and 2020, respectively.

The following tables disclose revenue (in thousands) by contract type, customer and contractor type for the periods presented.

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
Cost-reimbursable	$	441,588	$	431,991	$	1,305,313	$	1,283,522
Fixed-price	113,122		126,402		362,804		368,316
Time-and-materials	83,111		77,803		251,506		227,762
Revenue	$	637,821	$	636,196	$	1,919,623	$	1,879,600

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
U.S. Government	$	631,765	$	624,888	$	1,903,018	$	1,848,043
State agencies, international agencies and commercial entities	6,056		11,308		16,605		31,557
Revenue	$	637,821	$	636,196	$	1,919,623	$	1,879,600

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
Prime contractor	$	596,420	$	579,858	$	1,787,800	$	1,712,403
Subcontractor	41,401		56,338		131,823		167,197
Revenue	$	637,821	$	636,196	$	1,919,623	$	1,879,600

The components of our receivables are as follows (in thousands):

	September 30, 2021		December 31, 2020
Billed receivables	$	313,336	$	312,991
Unbilled receivables	91,251		106,007
Allowance for doubtful accounts	(15,184)		(18,377)
Receivables—net	$	389,403	$	400,621

Receivables at September 30, 2021 are expected to be substantially collected within one year except for approximately $4.1 million, of which a majority is related to U.S. government receivables. We do not believe that we have significant exposure to credit risk as billed receivables and unbilled receivables are primarily due from the U.S. government. The allowance for doubtful accounts represents our estimate for exposure due to compliance, contractual issues and bad debts related to prime contractors.

At September 30, 2021 and December 31, 2020, our contract liabilities are $34.4 million and $37.2 million, respectively. Changes in the balance of contract liabilities are primarily due to the timing difference between our performance and our customers' payments. For the three months ended September 30, 2021, the amount of revenue that was included in the opening

9

contract liabilities balance was $1.2 million. For the nine months ended September 30, 2021, the amount of revenue that was included in the opening contract liabilities balance was $30.6 million.

The remaining performance obligation as of September 30, 2021 is $2.2 billion. The following table discloses when we expect to recognize the remaining performance obligation as revenue (in billions):

For the remaining three months ending December 31, 2021		For the year ending
		December 31, 2022		December 31, 2023		Thereafter
$	0.6	$	1.0	$	0.2	$	0.4

4. Leases

Our operating leases are primarily made up of real estate. Our finance leases are primarily made up of transportation vehicles and equipment. There have been no material changes to our finance leases from the Form 10-K filed as of December 31, 2020.

The balance sheet information related to our operating leases was as follows (dollars in thousands):

	September 30, 2021		December 31, 2020
Operating Leases
Operating lease right of use assets	$	79,266	$	94,825
Operating lease obligations—current	$	31,291	$	30,105
Operating lease obligations—long term	$	67,306	$	80,242

The components of operating lease expense are as follows:

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
Operating lease expense	$	12,004	$	8,465	$	28,907	$	25,548

Operating lease expense for the three and nine months ended September 30, 2021 includes $3.4 million of expense related to the abandonment of four facilities.

5.Acquisitions

Tapestry Technologies (Tapestry)—On December 11, 2020, we completed the acquisition of Tapestry through a share purchase agreement by and among ManTech International Corporation, Tapestry Technologies, Inc., Project Tribune Holdings, Inc. (Holdco), and all of the shareholders of the Holdco. Tapestry provides unique insight and cybersecurity solutions to the U.S. Defense Information Systems Agency (DISA) and the Department of Defense (DoD). This acquisition broadens our footprint with DISA, serves as a springboard into the broader Defense Department IT marketspace, and provides us access to well-funded DISA and DoD programs.

The acquisition was accounted for as a business combination. The results of Tapestry's operations have been included in our condensed consolidated financial statements since that date. We funded the acquisition with cash on hand and borrowing under our revolving credit facility.

The purchase price of $46.3 million has been allocated to the underlying assets and liabilities based on their estimated fair value at the date of acquisition. The excess of the purchase price over the fair value of assets acquired and liabilities assumed was recorded as goodwill. The purchase price allocation for Tapestry is complete as of September 30, 2021.

Recognition of goodwill is largely attributed to the value paid for Tapestry's capabilities, which will broaden our footprint within DISA and the Defense Department IT marketplace. The goodwill recorded for this transaction will be deductible for tax

10

purposes over 15 years. The components of other intangible assets associated with the acquisition were customer relationships and backlog valued at $15.1 million and $1.4 million, respectively. The fair values of the customer relationships and backlog were determined using the excess earnings method (income approach) in which the value is derived from an estimation of the after-tax cash flows specifically attributable to backlog and customer relationships. Assumptions used in the analysis included revenue and expense forecasts, contributory asset charges, tax amortization benefit and discount rates. Customer contracts and related relationships represent the underlying relationships and agreements with Tapestry's existing customers. Customer relationships are amortized using the pattern of benefits method over their estimated useful lives of approximately 20 years. Backlog is amortized using the pattern of benefits method over its estimated useful life of 2 years. The weighted-average amortization period of other intangibles is 18 years.

The following table represents the purchase price allocation for Tapestry (in thousands):

Cash and cash equivalents	$	36
Receivables	3,926
Prepaid expenses	225
Goodwill	27,013
Other intangible assets	16,500
Property and equipment	269
Operating lease right of use assets	934
Other assets	10
Accounts payable	(522)
Accrued salaries and related expenses	(1,142)
Operating lease obligations—current	(487)
Accrued expenses and other current liabilities	(59)
Operating lease obligations—long term	(453)
Net assets acquired and liabilities assumed	$	46,250

Minerva Engineering (Minerva)—On November 9, 2020, we completed the acquisition of Minerva through a membership interest purchase agreement by and among ManTech International Corporation, Minerva Engineering, LLC and NH Holdco LLC. Minerva is a leading provider of advanced cyber services that support the intelligence community, including risk and vulnerability assessment, incident response and cyber intrusion detection, and wireless signal discovery. This acquisition enhances and expands our cyber defense capabilities within the intelligence community, adding new customers, new past performance qualifications, mission-critical contracts, and highly skilled, cleared professionals that increase our deep cyber security talent base.

The acquisition was accounted for as a business combination. The results of Minerva's operations have been included in our condensed consolidated financial statements since that date. We paid for the acquisition with cash on November 9, 2020 and a short-term promissory note that was paid on November 12, 2020.

The preliminary purchase price, which includes a finalized working capital adjustment, was $32.7 million. The preliminary purchase price has been preliminarily allocated to the underlying assets and liabilities based on their estimated fair value at the date of acquisition. The excess of the purchase price over the fair value of assets acquired and liabilities assumed was recorded as goodwill. As we are still in the process of reviewing the fair value of the assets acquired and liabilities assumed, the purchase price allocation for Minerva is not complete as of September 30, 2021. In accordance with ASC 805, Business Combinations, we expect to finalize our purchase price allocation within one year of the acquisition date.

Recognition of goodwill is largely attributed to the value paid for Minerva's capabilities, which will broaden our footprint within the intelligence community through the addition of differentiated capabilities and access to new customers and contracts. The goodwill recorded for this transaction will be deductible for tax purposes over 15 years. The components of other intangible assets associated with the acquisition were customer relationships and backlog valued at $10.5 million and $1.1 million, respectively. The fair values of the customer relationships and backlog were determined using the excess earnings method (income approach) in which the value is derived from an estimation of the after-tax cash flows specifically attributable to backlog and customer relationships. Assumptions used in the analysis included revenue and expense forecasts, contributory asset charges, tax amortization benefit and discount rates. Customer contracts and related relationships represent the underlying

11

relationships and agreements with Minerva's existing customers. Customer relationships are amortized using the pattern of benefits method over their estimated useful lives of approximately 20 years. Backlog is amortized using the pattern of benefits method over its estimated useful life of 2 years. The weighted-average amortization period for other intangible assets is 18 years.

The following table represents the preliminary purchase price allocation for Minerva (in thousands):

Cash and cash equivalents	$	56
Receivables	4,181
Prepaid expenses	28
Goodwill	19,807
Other intangible assets	11,600
Property and equipment	149
Operating lease right of use assets	968
Other assets	29
Accounts payable	(1,875)
Accrued salaries and related expenses	(784)
Operating lease obligations—current	(384)
Accrued expenses and other current liabilities	(555)
Operating lease obligations—long term	(562)
Net assets acquired and liabilities assumed	$	32,658

6.Earnings Per Share

Under ASC 260, Earnings per Share, the two-class method is an earnings allocation formula that determines earnings per share for each class of common stock according to dividends declared (or accumulated) and participation rights in undistributed earnings. Under that method, basic and diluted earnings per share data are presented for each class of common stock.

In applying the two-class method, we determined that undistributed earnings should be allocated equally on a per share basis between Class A and Class B common stock. Under our Certificate of Incorporation, the holders of the common stock are entitled to participate ratably, on a share-for-share basis as if all shares of common stock were of a single class, in such dividends as may be declared by the Board of Directors. During the nine months ended September 30, 2021 and 2020, we declared and paid quarterly dividends in the amounts of $0.38 per share and $0.32 per share, respectively, on both classes of common stock.

Basic earnings per share has been computed by dividing net income available to common stockholders by the weighted average number of shares of common stock outstanding during each period. Shares issued during the period and shares reacquired during the period are weighted for the portion of the period in which the shares were outstanding. Diluted earnings per share have been computed in a manner consistent with that of basic earnings per share while giving effect to all potentially dilutive common shares that were outstanding during each period.

12

The net income available to common stockholders and weighted average number of common shares outstanding used to compute basic and diluted earnings per share for each class of common stock are as follows (in thousands, except per share amounts): 

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
Distributed earnings	$	15,475	$	12,915	$	46,326	$	38,685
Undistributed earnings	22,481		16,824		60,567		49,681
Net income	$	37,956	$	29,739	$	106,893	$	88,366
Class A common stock:
Basic net income available to common stockholders	$	25,663	$	20,014	$	72,200	$	59,421
Basic weighted average common shares outstanding	27,512		27,139		27,421		27,071
Basic earnings per share	$	0.93	$	0.74	$	2.63	$	2.19
Diluted net income available to common stockholders	$	25,754	$	20,080	$	72,495	$	59,656
Effect of potential exercise of stock options	301		274		349		330
Diluted weighted average common shares outstanding	27,813		27,413		27,770		27,401
Diluted earnings per share	$	0.93	$	0.73	$	2.61	$	2.18
Class B common stock:
Basic net income available to common stockholders	$	12,293	$	9,725	$	34,693	$	28,945
Basic weighted average common shares outstanding	13,177		13,187		13,177		13,187
Basic earnings per share	$	0.93	$	0.74	$	2.63	$	2.19
Diluted net income available to common stockholders	$	12,202	$	9,659	$	34,398	$	28,710
Diluted weighted average common shares outstanding	13,177		13,187		13,177		13,187
Diluted earnings per share	$	0.93	$	0.73	$	2.61	$	2.18

For the three months ended September 30, 2021 and 2020, options to purchase 24,926 shares and 201,880 shares, respectively, were outstanding but not included in the computation of diluted earnings per share because the options' effect would have been anti-dilutive. For the nine months ended September 30, 2021 and 2020, options to purchase 8,673 shares and 221,845 shares, respectively, were outstanding but not included in the computation of diluted earnings per share because the options' effect would have been anti-dilutive. For the nine months ended September 30, 2021 and 2020, there were 163,577 shares and 127,467 shares, respectively, issued from the exercise of stock options. For the nine months ended September 30, 2021 and 2020 there were 135,349 shares and 54,433 shares, respectively, issued from the vesting of restricted stock units.

7.Property and Equipment

Major classes of property and equipment are summarized as follows (in thousands):

	September 30, 2021		December 31, 2020
Furniture and equipment	$	222,857	$	194,470
Leasehold improvements	69,031		62,293
Finance leases	796		705
Property and equipment—gross	292,684		257,468
Accumulated depreciation and amortization	(165,642)		(136,172)
Property and equipment—net	$	127,042	$	121,296

13

Depreciation and amortization expense related to property and equipment for the three months ended September 30, 2021 and 2020 was $11.7 million and $9.2 million, respectively. Depreciation and amortization expense related to property and equipment for the nine months ended September 30, 2021 and 2020 was $34.9 million and $27.7 million, respectively.

8.Goodwill and Other Intangible Assets

The change in the carrying amount of goodwill during the year ended December 31, 2020 and nine months ended September 30, 2021 are as follows (in thousands):

	Goodwill Balance
Goodwill at December 31, 2019	$	1,191,259
Acquisitions	46,624
Acquisition fair value adjustment	11
Goodwill at December 31, 2020	1,237,894
Acquisition fair value adjustment	196
Goodwill at September 30, 2021	$	1,238,090

Other intangible assets consisted of the following (in thousands):

	September 30, 2021						December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Other intangible assets:
Contract and program intangible assets	$	430,632	$	256,859	$	173,773	$	430,632	$	242,194	$	188,438
Capitalized software	54,570		46,109		8,461		54,605		40,812		13,793
Total other intangible assets—net	$	485,202	$	302,968	$	182,234	$	485,237	$	283,006	$	202,231

Amortization expense relating to intangible assets for the three months ended September 30, 2021 and 2020 was $6.9 million and $8.2 million, respectively. Amortization expense relating to intangible assets for the nine months ended September 30, 2021 and 2020 was $20.0 million and $21.2 million, respectively. Amortization expense for the nine months ended September 30, 2021 includes an impairment of $1.2 million for capitalized software. We estimate that we will have the following amortization expense for the future periods indicated below (in thousands):

For the remaining three months ending December 31, 2021	$	5,730
For the year ending:
December 31, 2022	$	23,448
December 31, 2023	$	19,283
December 31, 2024	$	17,486
December 31, 2025	$	15,423
December 31, 2026	$	14,331

9.Debt

On July 20, 2021, we amended and restated our credit agreement (Third Amended and Restated Credit Agreement) with a syndicate of lenders led by Bank of America, N.A., as sole administrative agent. The Third Amended and Restated Credit Agreement includes an aggregate principal amount of up to $1.1 billion made available through (i) a $500 million revolving credit facility with a $100 million letter of credit sublimit and a $50 million swing line loan sublimit and (ii) a $600 million delayed-draw term loan facility. Under the delayed-draw term loan facility, borrowings are available to be drawn prior to the first anniversary of the Third Amended and Restated Credit Agreement in up to three separate drawings in a minimal amount of $50 million. The Third Amended and Restated Credit Agreement also includes an accordion feature that permits us to arrange

14

with the lenders for the provision of additional commitments. The maturity date of the Third Amended and Restated Credit Agreement is July 20, 2026. We have deferred $3.7 million in debt issuance costs, including $3.3 million due to the Third Amended and Restated Credit Agreement, which are being amortized over the term of the new credit agreement.

Borrowings under the Third Amended and Restated Credit Agreement are collateralized by substantially all of our assets and those of our Material Subsidiaries and bear interest at one of the following variable rates as selected by us at the time of borrowing: a London Interbank Offer Rate base rate plus market-rate spreads (1.25% to 2.00% based on our consolidated total leverage ratio) or Bank of America's base rate plus market spreads (0.25% to 1.00% based on our consolidated total leverage ratio).

The terms of the Third Amended and Restated Credit Agreement permit prepayment and termination of the loan commitments at any time, subject to certain conditions. The Third Amended and Restated Credit Agreement requires us to comply with specified financial covenants, including the maintenance of certain leverage ratios and a consolidated coverage ratio. The Third Amended and Restated Credit Agreement also contains various covenants, including affirmative covenants with respect to certain reporting requirements and maintaining certain business activities, and negative covenants that, among other things, may limit or impose restrictions on our ability to incur liens, incur additional indebtedness, make investments, make acquisitions and undertake certain other actions. As of and during the nine months ended September 30, 2021 and 2020, we were in compliance with these covenants.

There was no outstanding balance on our credit facilities at September 30, 2021. There was $15.0 million outstanding on our credit facilities at December 31, 2020. The maximum available borrowing under the credit facilities at September 30, 2021 was $1.1 billion. As of September 30, 2021, we were contingently liable under letters of credit totaling $2.1 million, which reduces our availability to borrow under our credit facilities.

10.Commitments and Contingencies

Contracts with the U.S. government, including subcontracts, are subject to extensive legal and regulatory requirements and, from time-to-time, agencies of the U.S. government, in the ordinary course of business, investigate whether our operations are conducted in accordance with these requirements and the terms of the relevant contracts. U.S. government investigations of us, whether related to our U.S. government contracts or conducted for other reasons, could result in administrative, civil or criminal liabilities, including repayments, fines or penalties being imposed upon us, or could lead to suspension or debarment from future U.S. government contracting activities. Management believes it has adequately reserved for any losses that may be experienced from any investigation of which it is aware. The Defense Contract Audit Agency has substantially completed our incurred cost audits through 2018 with no material adjustments. The remaining audits for 2019 through 2020 are not expected to have a material effect on our financial position, results of operations or cash flow and management believes it has adequately reserved for any losses.

In the normal course of business, we are involved in certain governmental and legal proceedings, claims and disputes and have litigation pending under several suits. We believe that the ultimate resolution of these matters will not have a material effect on our financial position, results of operations or cash flows.

We have $2.1 million outstanding on our letter of credit, of which $1.6 million is related to an outstanding performance bond in connection with a contract between ManTech MENA, LLC and Jadwalean International Operations and Management Company to fulfill technical support requirements for the Royal Saudi Air Force.

11.Stock-Based Compensation

Our 2016 Management Incentive Plan (the Plan) was designed to attract, retain and motivate key employees. The types of awards available under the Plan include, among others, stock options, restricted stock and restricted stock units (RSUs), among others. Equity awards granted under the Plan are settled in shares of Class A common stock. At the beginning of each year, the Plan provides that the number of shares available for issuance automatically increases by an amount equal to 1.5% of the total number of shares of Class A and Class B common stock outstanding on December 31st of the previous year. On January 2, 2021, there were 607,066 additional shares made available for issuance under the Plan. Through September 30, 2021, the Board of Directors has authorized the issuance of up to 16,358,071 shares under this Plan. Through September 30, 2021, the remaining aggregate number of shares of our common stock available for future grants under the Plan was 7,684,850. The Plan expires in March 2026.

The Plan is administered by the compensation committee of our Board of Directors, along with its delegates. Subject to the express provisions of the Plan, the committee has the Board of Directors’ authority to administer and interpret the Plan,

15

including the discretion to determine the exercise price, vesting schedule, contractual life and the number of shares to be issued.

Stock Compensation Expense—For the three months ended September 30, 2021 and 2020, we recorded $3.9 million and $3.0 million, respectively, of stock-based compensation expense. For the nine months ended September 30, 2021 and 2020, we recorded $11.5 million and $8.5 million, respectively, of stock-based compensation expense. No compensation expense of employees with stock awards, including stock-based compensation expense, was capitalized during the periods. For the three months ended September 30, 2021 and 2020, we recorded $0.4 million and $0.2 million, respectively, to income tax benefit related to the exercise of stock options, vested cancellations and the vesting of restricted stock and restricted stock units. For the nine months ended September 30, 2021 and 2020, we recorded $1.9 million and $1.0 million, respectively, to income tax benefit related to the exercise of stock options, vested cancellations and the vesting of restricted stock and restricted stock units.

Stock Options—Under the Plan, we have issued stock options in the past. A stock option gives the holder the right, but not the obligation to purchase a certain number of shares at a predetermined price for a specific period of time. We did not grant any options during the nine months ended September 30, 2021 and year ended December 31, 2020.

We have used the Black-Scholes-Merton option pricing model to determine the fair value of our awards on the date of grant. We will reconsider the use of the Black-Scholes-Merton model if additional information becomes available in the future that indicates another model would be more appropriate or if grants issued in future periods have characteristics that cannot be reasonably estimated under this model. Option grants that vested during the nine months ended September 30, 2021 and 2020 had a combined fair value of $1.1 million and $1.8 million, respectively.

The following table summarizes stock option activity for the year ended December 31, 2020 and the nine months ended September 30, 2021:

	Number of Shares	Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Life
Stock options outstanding at December 31, 2019	1,136,095	$	54.98	$	28,291
Exercised	(223,405)	$	46.72	$	6,897
Cancelled and expired	(126,863)	$	61.17
Stock options outstanding at December 31, 2020	785,827	$	56.33	$	25,629
Exercised	(163,577)	$	47.89	$	6,270
Cancelled and expired	(14,800)	$	63.50
Stock options outstanding at September 30, 2021	607,450	$	58.42	$	10,628	2 years
Stock options exercisable at September 30, 2021	380,122	$	54.37	$	8,191	2 years

The following table summarizes non-vested stock options for the nine months ended September 30, 2021:

	Number of Shares	Weighted Average Fair Value
Non-vested stock options at December 31, 2020	353,643	$	11.66
Vested	(113,516)	$	10.06
Cancelled	(12,799)	$	12.27
Non-vested stock options at September 30, 2021	227,328	$	12.43

Unrecognized compensation expense related to non-vested awards was $1.2 million as of September 30, 2021, which is expected to be recognized over a weighted-average period of 1 year.

Restricted Stock—Under the Plan, we have issued restricted stock. A restricted stock award is an issuance of shares that cannot be sold or transferred by the recipient until the vesting period lapses. Restricted stock issued to members of our Board of Directors vest on the one year anniversary of the grant date. The related compensation expense is recognized over the service period and is based on the grant date fair value of the stock. The grant date fair value of the restricted stock is equal to

16

the closing market price of our common stock on the date of grant.

The following table summarizes the restricted stock activity during the year ended December 31, 2020 and the nine months ended September 30, 2021:

	Number of Shares	Weighted Average Fair Value
Non-vested restricted stock at December 31, 2019	24,000	$	62.66
Granted	24,000	$	71.11
Vested	(24,000)	$	62.66
Non-vested restricted stock at December 31, 2020	24,000	$	71.11
Granted	24,000	$	86.01
Vested	(24,000)	$	71.11
Non-vested restricted stock at September 30, 2021	24,000	$	86.01

RSUs—Under the Plan, we have issued restricted stock units (RSUs). RSUs are not actual shares, but rather a right to receive shares in the future. The shares are not issued and the employee cannot sell or transfer shares prior to vesting and have no voting rights until the RSUs vest. Employees who are granted RSUs do not receive dividend payments during the vesting period. Our employees' time-based RSUs generally provide for the delivery of shares in one-third increments on the first, second and third anniversaries of the date of grant. The grant date fair value of the RSUs is equal to the closing market price of our common stock on the grant date less the present value of dividends expected to be awarded during the service period. We recognize the grant date fair value of RSUs of shares we expect to issue as compensation expense ratably over the requisite service period.

The following table summarizes the non-vested RSU activity during the year ended December 31, 2020 and the nine months ended September 30, 2021:

	Number of Units	Weighted Average Fair Value
Non-vested RSUs at December 31, 2019	210,827	$	55.31
Granted	266,880	$	68.83
Vested	(73,047)	$	53.85
Forfeited	(57,861)	$	64.52
Non-vested RSUs at December 31, 2020	346,799	$	64.48
Granted	197,670	$	78.62
Vested	(111,349)	$	61.75
Forfeited	(17,005)	$	63.95
Non-vested RSUs at September 30, 2021	416,115	$	71.95

12. Subsequent Events

On October 29, 2021, the Company entered into a Unit Purchase Agreement by and among the Company, Gryphon Parent, LLC and Gryphon Finance, LLC to acquire Gryphon Technologies, Inc. in exchange for $350 million. We believe the acquisition of Gryphon Technologies, Inc. will further strengthen our long-term competitive position by adding differentiated digital and systems engineering capabilities across the Department of Defense. The transaction is subject to the Hart-Scott-Rodino Act and is expected to close within the fourth quarter of 2021.

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

Cautionary Note Regarding Forward-Looking Statements

All statements and assumptions contained in this Quarterly Report on Form 10-Q that do not relate to historical facts constitute "forward-looking statements." These statements can be identified by the fact that they do not relate strictly to historical or current facts. Forward-looking statements often include the use of words such as "may," "will," "expect," "intend," "anticipate," "believe," "estimate," "plan" and words and terms of similar substance in connection with discussions of future

17

events, situations or financial performance. While these statements represent our current expectations, no assurance can be given that the results or events described in such statements will be achieved.

Forward-looking statements may include, among other things, statements with respect to our financial condition, results of operations, prospects, business strategies, competitive position, growth opportunities, and plans and objectives of management. Such statements are subject to numerous assumptions, risks, uncertainties and other factors, many of which are outside of our control, and include, without limitations, the risks and uncertainties discussed in the Item 1A "Risk Factors" in Part I of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Factors or risks that could cause our actual results to differ materially from the results we anticipate include, but are not limited to, the following:

•failure to maintain our relationship with the U.S. government, or the failure to compete effectively for new contract awards or to retain existing U.S. government contracts;

•adverse changes in U.S. government spending for programs we support, whether due to changing mission priorities, failure to pass fiscal year budget or enact stopgap spending measures through Continuing Resolutions, failure to increase or suspend U.S. debt ceiling, socio-economic policies or federal budget constraints generally;

•disruptions to our business or damage to our reputation resulting from cyber attacks and other security threats;

•disruptions to our business resulting from the COVID-19 pandemic or other similar global health epidemics, pandemics and/or other disease outbreaks, including the requirement for vaccination of our workforce;

•inability to recruit and retain a sufficient number of employees with specialized skill sets or necessary security clearances who are in great demand and limited supply;

•failure to compete effectively for awards procured through the competitive bidding process, and the adverse impact of delays resulting from our competitors' protests of new contracts that are awarded to us;

•failure to obtain option awards, task orders or funding under our contracts;

•the government renegotiating, modifying or terminating our contracts;

•failure to comply with, or adverse changes in, complex U.S. government laws and procurement regulations;

•adverse results of U.S. government audits or other investigations of our government contracts;

•failure to successfully integrate acquired companies or businesses into our operations or to realize any accretive or synergistic effects from such acquisitions;

•adverse changes in business conditions that may cause our investments in recorded goodwill to become impaired; and

•failure to mitigate risks associated with conducting business internationally.

We urge you not to place undue reliance on these forward-looking statements, which speak only as of the date of this Quarterly Report. We undertake no obligation to update any forward-looking statement made herein following the date of this Quarterly Report, whether as a result of new information, subsequent events or circumstances, changes in expectations or otherwise.

Overview

We provide mission-focused technology solutions and services for U.S. defense, intelligence community and federal civilian agencies. We excel in full-spectrum cyber, secure mission & enterprise IT, advanced data analytics, software and systems development, intelligent systems engineering, intelligence mission support and mission operations.

Approximately 99% of our revenues are generated through contracts with the U.S. federal government, or through prime contractors supporting the U.S. government. The U.S. government is the largest consumer of services and solutions in the U.S. As such, our business is impacted by the overall U.S. government budget and our ability to match our capabilities and offerings to the U.S. government's spending priorities. For government fiscal year (GFY) 2022, the President's proposal contains $753 billion for defense and $769 billion for non-defense. Included within the proposal is $20 billion for unclassified cyber, representing 9% year-over-year growth and $97 billion for IT modernization, representing 4% year-over-year growth. On September 30, 2021, the President signed a Continuing Resolution (CR) that funds the U.S. government through December 3, 2021. We expect the U.S. government to be funded through additional CRs as the President's budget proposal is debated within Congress. Should Congress and the President fail to enact legislation funding the U.S. government through GFY 2022, or enact other stopgap spending measures, the U.S. government could experience periodic shutdowns.

On October 14, 2021, the President signed a temporary increase of the U.S. debt limit. The increased borrowing limit is expected to be exhausted in early December. If Congress fails to increase or further suspend the debt ceiling prior to exhausting

18

its monetary resources, the U.S. government could experience a shutdown or be unable to make payments which could have a material adverse effect on our liquidity and results of operations.

We are continuing to monitor impacts of the global outbreak of the COVID-19 pandemic including new variants of the virus. With the rollout of the vaccine, previous measures adopted by local, state and federal governments to mitigate its impact have been, or are in the process of being, lifted. The removal of these mitigation protocols has allowed a majority of our previously impacted programs to return to normal operations. For programs that had been impacted, the Coronavirus Aid, Relief and Economic Security (CARES) Act, enacted on March 27, 2020, included a provision (Section 3610) under which government contractors can seek reimbursement for employee's salaries when they are prevented from accessing worksites or are subject to reduced work schedules and cannot telecommute. These provisions were extended through September 30, 2021 when the President signed into law the American Rescue Plan (ARP) Act of 2021. The ARP Act was a $1.9 trillion stimulus package aimed at further combating the economic impacts of the COVID-19 pandemic. Amounts submitted for recovery under the CARES Act were insignificant during the third quarter.

On September 9, 2021, the President signed an Executive Order requiring all federal employees and contractors supporting the federal government to be vaccinated. We are currently evaluating the vaccination status of our workforce, including potential impacts the enforcement of the order will have on our employees and our ability to meet deliverables promised in our contracts.

We classify indirect expenses either as cost of services or general and administrative in manner consistent with disclosure statements submitted and approved by the Defense Contract Management Agency (DCMA). Effective for 2021, we have reclassified certain expenses from general and administrative to cost of sales (overhead). While this does not impact indirect expenses in total, it does reduce general and administrative as compared to prior periods.

We recommend that you read this discussion and analysis in conjunction with our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, previously filed with the Securities and Exchange Commission.

19

Three Months Ended September 30, 2021 Compared to the Three Months Ended September 30, 2020

The following table sets forth certain items from our condensed consolidated statements of income and the relative percentage that certain items of expenses and earnings bear to revenue, as well as the period-to-period change from September 30, 2020 to September 30, 2021.

	Three months ended September 30,								Period-to-Period Change
	2021		2020		2021		2020		2020 to 2021
	Dollars				Percentage				Dollars		Percentage
	(dollars in thousands)
REVENUE	$	637,821	$	636,196	100.0	%	100.0	%	$	1,625	0.3	%
Cost of services	536,205		538,000		84.1	%	84.6	%	(1,795)		(0.3)	%
General and administrative expenses	48,343		58,855		7.5	%	9.2	%	(10,512)		(17.9)	%
OPERATING INCOME	53,273		39,341		8.4	%	6.2	%	13,932		35.4	%
Interest expense	(606)		(310)		0.2	%	—	%	296		95.5	%
Interest income	36		40		—	%	—	%	(4)		(10.0)	%
Other (expense), net	(92)		(29)		—	%	—	%	63		217.2	%
INCOME FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY METHOD INVESTMENTS	52,611		39,042		8.2	%	6.2	%	13,569		34.8	%
Provision for income taxes	(14,655)		(9,303)		2.2	%	1.5	%	5,352		57.5	%
NET INCOME	$	37,956	$	29,739	6.0	%	4.7	%	$	8,217	27.6	%

Revenue

The primary drivers of our increase in revenues relates to revenue from recent acquisitions and growth on certain existing contracts. These increases were offset by contracts and tasks that ended and reduced scope of work on some contracts.

Cost of services

The decrease in cost of services was primarily due to lower amounts of direct labor and related fringe benefits partially offset by an increase in overhead due to a change in the classification indirect cost allocations. As a percentage of revenue, direct labor costs were 48% for both the three months ended September 30, 2021 and 2020. As a percentage of revenues, other direct costs, which include subcontractors and third party equipment and materials used in the performance of our contracts, were 36% for both the three months ended September 30, 2021 and 2020. With COVID mitigation protocols being reduced or lifted, direct labor has been impacted as employees have begun utilizing paid time off at a normalized level. Profitability has increased due to higher program profits including improved award fees as compared to the prior period.

General and administrative expenses

The decrease in general and administrative expenses was primarily due to changes in the classification of certain indirect cost allocations of approximately $7.4 million, and collections on an international program that has ended. These reductions were partially offset by increased expenditures for investments in new capabilities.

Provision for income taxes

Our effective tax rate is affected by recurring items, such as the relative amount of income we earn in various taxing jurisdictions and their tax rates. It is also affected by discrete items that may occur in any given year, but are not consistent from year-to-year. Our effective income tax rate was 28% and 24% for the three months ended September 30, 2021 and 2020, respectively. For the three months ending September 30, 2021, the effective tax rate increased primarily due to a decrease in the market value of our deferred compensation plan, increases in various state tax rates and increased add back for executive compensation.

20

Nine Months Ended September 30, 2021 Compared to the Nine Months Ended September 30, 2020

The following table sets forth certain items from our condensed consolidated statements of income and the relative percentage that certain items of expenses and earnings bear to revenue, as well as the period-to-period change from September 30, 2020 to September 30, 2021.

	Nine months ended September 30,								Period-to-Period Change
	2021		2020		2021		2020		2020 to 2021
	Dollars				Percentage				Dollars		Percentage
	(dollars in thousands)
REVENUE	$	1,919,623	$	1,879,600	100.0	%	100.0	%	$	40,023	2.1	%
Cost of services	1,631,790		1,597,764		85.0	%	85.0	%	34,026		2.1	%
General and administrative expenses	143,477		164,011		7.5	%	8.7	%	(20,534)		(12.5)	%
OPERATING INCOME	144,356		117,825		7.5	%	6.3	%	26,531		22.5	%
Interest expense	(1,326)		(1,597)		0.1	%	0.1	%	(271)		(17.0)	%
Interest income	115		227		—	%	—	%	(112)		(49.3)	%
Other (expense), net	(225)		(51)		—	%	—	%	174		341.2	%
INCOME FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY METHOD INVESTMENTS	142,920		116,404		7.4	%	6.2	%	26,516		22.8	%
Provision for income taxes	(36,026)		(28,037)		1.8	%	1.5	%	7,989		28.5	%
Equity in (losses) of unconsolidated subsidiaries	(1)		(1)		—	%	—	%	—		—	%
NET INCOME	$	106,893	$	88,366	5.6	%	4.7	%	$	18,527	21.0	%

Revenue

The primary drivers of our increase in revenues relates to revenue from recent acquisitions, new contract awards and growth on certain existing contracts. These increases were offset by contracts and tasks that ended, reduced scope of work on some contracts and lower material purchases as compared to the same period in 2020.

Cost of services

The increase in cost of services was primarily due to increases in revenue and the reclassification of certain allocated indirect expenses. As a percentage of revenue, direct labor and associated indirect costs were 50% and 48% for the nine months ended September 30, 2021 and 2020, respectively. As a percentage of revenues, other direct costs, which include subcontractors and third party equipment and materials used in the performance of our contracts, were 35% and 37% for the nine months ended September 30, 2021 and 2020, respectively. The shift in our mix between direct labor and other direct costs was primarily due an increase in overhead due to cost allocation reclassifications which were partially offset by reduced fringe benefit costs, and lower material purchases on several contracts due to timing of customer requirements as well as reduced other direct costs. Profitability has increased due to higher program profits including improved award fees as compared to the prior period. We expect cost of services as a percentage of revenue to increase in 2021 due to expectations of increasing material procurements.

General and administrative expenses

The decrease in general and administrative expenses was primarily due to changes in the classification of certain indirect cost allocations of approximately $22.3 million and collections on an international program that has ended. These reductions were partially offset by increased bid and proposal spending and investments in new capabilities through research and development expenditures. For the remainder of 2021, we expect general and administrative expenses to increase as a percentage of revenue.

21

Provision for income taxes

Our effective tax rate is affected by recurring items, such as the relative amount of income we earn in various taxing jurisdictions and their tax rates. It is also affected by discrete items that may occur in any given year, but are not consistent from year-to-year. Our effective income tax rate was 25% and 24% for the nine months ended September 30, 2021 and 2020, respectively. The increase is primarily due to an increase in various state rates as well as an increase in the add back for executive compensation. Under the current tax laws, we expect our effective tax rate to slightly increase in 2021. The President has signaled the administration's intent to increase the U.S. corporate income tax rate. An increase in the U.S. corporate rate could result in a significant increase in our income tax expense as we would be required to revalue our deferred tax liabilities.

Backlog

At September 30, 2021 and December 31, 2020, our backlog was $10.1 billion and $10.2 billion, respectively. Our funded backlog was $1.3 billion and $1.2 billion as of September 30, 2021 and December 31, 2020, respectively. Backlog represents estimates that we calculate on a consistent basis. For additional information on how we compute backlog, see the disclosure under the caption "Backlog," contained in "Item 1 Business" of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Liquidity and Capital Resources

Historically, our primary liquidity needs have been financing acquisitions, working capital, payments under our cash dividend program and capital expenditures. Our primary sources of liquidity are cash from operating activities and borrowings under our revolving credit facility.

On September 30, 2021, our cash and cash equivalents balance was $145.4 million. There was no outstanding balance under our credit facilities at September 30, 2021. As of September 30, 2021, we were contingently liable under letters of credit totaling $2.1 million, which reduces our availability to borrow under our credit facilities. The maximum available borrowings under our credit facilities at September 30, 2021 were $1.1 billion.

Cash Flows From (Used In) Operating Activities

Our operating cash flow is primarily affected by our ability to invoice and collect from our customers in a timely manner, our management of vendor payments and the overall profitability of our contracts. We bill most of our customers monthly after services are rendered. Our accounts receivable days sales outstanding were 55 and 54 for the nine months ended September 30, 2021 and 2020, respectively. For the nine months ended September 30, 2021 and 2020, our net cash flow from operating activities was $205.1 million and $217.1 million, respectively. The decrease in net cash flows from operating activities over the comparative period was primarily related to accrued salaries and related expenses due to the under utilization of paid time off in the prior comparative period.

Cash Flows From (Used In) Investing Activities

Our cash used in investing activities consists primarily of business combinations, purchases of property and equipment and investments in capital software. For the nine months ended September 30, 2021 our net cash used in investing activities was $41.0 million, which was primarily due to the purchase of equipment to support managed IT service contracts. For the nine months ended September 30, 2020 our net cash used in investing activities was $53.9 million, which was primarily due to the purchase of equipment to support managed IT service contracts, infrastructure investments and capitalized software, offset by proceeds from corporate owned life insurance and sales of property and equipment.

Cash Flows From (Used in) Financing Activities

For the nine months ended September 30, 2021, our net cash used in financing activities was $59.9 million, which was primarily the result of net payments under our credit facilities and dividend payments. For the nine months ended September 30, 2020, our net cash used in financing activities was $70.4 million, which was primarily due to net repayments of our revolving credit facility and dividend payments, offset by proceeds from the exercise of stock options.

Credit Facilities

On July 20, 2021, we amended and restated our credit agreement (Third Amended and Restated Credit Agreement) with a

22

syndicate of lenders led by Bank of America, N.A., as sole administrative agent. The Third Amended and Restated Credit Agreement includes an aggregate principal amount of up to $1.1 billion made available through (i) a $500 million revolving credit facility with a $100 million letter of credit sublimit and a $50 million swing line loan sublimit and (ii) a $600 million delayed-draw term loan facility. Under the delayed-draw term loan facility, borrowings are available to be drawn prior to the first anniversary of the Third Amended and Restated Credit Agreement in up to three separate drawings in a minimal amount of $50 million. The Third Amended and Restated Credit Agreement also includes an accordion feature that permits us to arrange with the lenders for the provision of additional commitments. The maturity date of the Third Amended and Restated Credit Agreement is July 20, 2026. We have deferred $3.7 million in debt issuance costs, including $3.3 million due to the Third Amended and Restated Credit Agreement, which are being amortized over the term of the new credit agreement.

Borrowings under the Third Amended and Restated Credit Agreement are collateralized by substantially all of our assets and those of our Material Subsidiaries and bear interest at one of the following variable rates as selected by us at the time of borrowing: a London Interbank Offer Rate base rate plus market-rate spreads (1.25% to 2.00% based on our consolidated total leverage ratio) or Bank of America's base rate plus market spreads (0.25% to 1.00% based on our consolidated total leverage ratio).

There was no outstanding balance on our credit facilities at September 30, 2021. As of and during the nine months ended September 30, 2021, we were in compliance with the covenants under the Third Amended and Restated Credit Agreement.

Capital Resources

We believe the capital resources available to us from cash on hand, our capacity under our credit facilities, and cash from our operations are adequate to fund our anticipated cash requirements for at least the next year. We anticipate financing our internal and external growth through cash from operating activities, borrowings under our credit facilities and issuance of equity.

Cash Management

To the extent possible, we invest our available cash in short-term, investment grade securities in accordance with our investment policy. Under our investment policy, we manage our investments in accordance with the priorities of maintaining the safety of our principal, maintaining the liquidity of our investments, maximizing the yield on our investments and investing our cash to the fullest extent possible. Our investment policy provides that no investment security can have a final maturity that exceeds six months and that the weighted average maturity of the portfolio cannot exceed 60 days. Cash and cash equivalents include cash on hand, amounts due from banks and short-term investments with maturity dates of three months or less at the date of purchase.

Dividend

During the nine months ended September 30, 2021 and 2020, we declared and paid a quarterly dividend in the amount of $0.38 per share and $0.32 per share, respectively, on both classes of our common stock. While we expect to continue the cash dividend program, any future dividends declared will be at the discretion of our Board of Directors and will depend, among other factors, upon our results of operations, financial condition and cash requirements, as well as such other factors that our Board of Directors deems relevant.

Off-Balance Sheet Arrangements

In the ordinary course of business, we use letters of credit issued to satisfy certain contractual terms with our customers. As of September 30, 2021, $2.1 million in letters of credit were issued but undrawn. We have an outstanding performance bond in connection with a contract between ManTech MENA, LLC and Jadwalean International Operations and Management Company to fulfill technical support requirements for the Royal Saudi Air Force. This performance bond is guaranteed by a letter of credit in the amount of $1.6 million.

Critical Accounting Estimates and Policies

Critical accounting policies are defined as those that are reflective of significant judgments and uncertainties, and potentially result in materially different results under different assumptions and conditions. Application of these policies is particularly important to the portrayal of our financial condition and results of operations. The discussion and analysis of our financial condition and results of operations are based on our condensed consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles (GAAP). The preparation of these condensed

23

consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. Actual results may differ from these estimates under different assumptions or conditions. Our significant accounting policies are set forth under the caption "Critical Accounting Estimates and Policies" in Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, previously filed with the SEC. There have been no material changes to our critical accounting estimates and policies from those discussed in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Recently Adopted Accounting Standards Updates

Accounting Standards Updates that became effective during the nine months ended September 30, 2021 did not have a material impact on our condensed consolidated financial statements.

Recently Issued But Not Yet Adopted ASUs

ASUs effective after September 30, 2021 are not expected to have a material effect on our condensed consolidated financial statements.

Item 3.Quantitative and Qualitative Disclosures about Market Risk

Our exposure to market risk relates to changes in interest rates for borrowing under our credit facilities. At September 30, 2021, we had no outstanding balance on our credit facilities. Borrowings under our credit facilities bear interest at variable rates. A hypothetical 10% increase in interest rates would have an immaterial effect on our interest expense for the nine months ended September 30, 2021.

We do not use derivative financial instruments for speculative or trading purposes. When we have excess cash, we invest in short-term, investment grade, interest-bearing securities. Our investments are made in accordance with an investment policy. Under this policy, no investment securities can have maturities exceeding six months and the weighted average maturity of the portfolio cannot exceed 60 days.

Item 4.Controls and Procedures

Management is responsible for establishing and maintaining adequate disclosure controls and procedures and internal control over financial reporting. Disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed in our reports filed or submitted under the Exchange Act, such as this Quarterly Report on Form 10-Q, is accurately recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms. Disclosure controls and procedures are also designed to provide reasonable assurance that such information is accumulated and communicated to our management, including our principal executive officer and our principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

It should be noted that a control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints and the benefits of controls must be considered relative to their costs. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. As a result, our disclosure controls and procedures are designed to provide reasonable assurance that such disclosure controls and procedures will meet their objectives.

As of September 30, 2021, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer (our principal executive officer and principal financial officer, respectively), management evaluated the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15 of the Exchange Act. Based upon this evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective at the reasonable assurance level described above.

There were no changes in our internal control over financial reporting during our last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

24

PART II – OTHER INFORMATION

Item 1.Legal Proceedings

We are subject to certain legal proceedings, government audits, investigations, claims and disputes that arise in the ordinary course of our business. Like most large government defense contractors, our contract costs are audited and reviewed on a continual basis by an in-house staff of auditors from the Defense Contract Audit Agency. In addition to these routine audits, we are subject from time-to-time to audits and investigations by other agencies of the U.S. government. These audits and investigations are conducted to determine if our performance and administration of our government contracts are compliant with contractual requirements and applicable federal statutes and regulations. An audit or investigation may result in a finding that our performance, systems and administration are compliant or, alternatively, may result in the government initiating proceedings against us or our employees, including administrative proceedings seeking repayment of monies, suspension and/or debarment from doing business with the U.S. government or a particular agency or civil or criminal proceedings seeking penalties and/or fines. Audits and investigations conducted by the U.S. government frequently span several years.

Although we cannot predict the outcome of these and other legal proceedings, investigations, claims and disputes, based on the information now available to us, we do not believe the ultimate resolution of these matters, either individually or in the aggregate, will have a material adverse effect on our business, prospects, financial condition or operating results.

Item 6.Exhibits

Exhibits required by Item 601 of Regulation S-K:

Exhibit	Description of Exhibit
31.1‡	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.
31.2‡	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.
32‡	Certification of Chief Executive Officer and Chief Financial Officer pursuant to Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended.
101.INS	Inline XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document).
101.SCH	Inline XBRL Taxonomy Extension Schema Document.
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).
‡ Filed herewith.

25

SIGNATURES

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.

		MANTECH INTERNATIONAL CORPORATION
		By:	/s/    KEVIN M. PHILLIPS
Date:	November 3, 2021	Name:	Kevin M. Phillips
		Title:	Chairman, Chief Executive Officer and President

		By:	/s/    JUDITH L. BJORNAAS
Date:	November 3, 2021	Name:	Judith L. Bjornaas
		Title:	Chief Financial Officer

26