UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

(mark one)
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20192021
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                     to                     
Commission file number 001-35007

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 Knight-Swift Transportation Holdings Inc.
(Exact name of registrant as specified in its charter)

Delaware20-5589597
(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.)
20002 North 19th Avenue2002 West Wahalla Lane
Phoenix,, Arizona85027
(Address of principal executive offices and Zip Code)
(602(602) 269-2000
(Registrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock $0.01 Par ValueKNXNew York Stock Exchange
Securities registered pursuant to section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes      No  
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.     Yes      No  
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes      No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes      No  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company in Rule 12b-2 of the Exchange Act.
Large accelerated filerAccelerated FilerAccelerated filerFiler
Non-accelerated filerNon-Accelerated FilerSmaller reporting companyReporting Company
Emerging growth companyGrowth 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 has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C 7262(b)) by the registered public accounting firm that prepared or issued its audit report.   
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 June 30, 2019,2021, the aggregate market value of our common stock held by non-affiliates was $4,422,253,119,$7,426,391,060, based on the closing price of our common stock as quoted on the NYSE as of such date.
There were 170,865,385166,191,076 shares of the registrant's common stock outstanding as of February 18, 2020.15, 2022.
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant's definitive proxy statement for its 20202022 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission (the "SEC") are incorporated by reference into Part III of this report.







KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.


20192021 ANNUAL REPORT ON FORM 10-K

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.


20192021 ANNUAL REPORT ON FORM 10-K
GLOSSARY OF TERMS
The following glossary provides definitions for certain acronyms and terms used in this Annual Report on Form 10-K. These acronyms and terms are specific to our company, commonly used in our industry, or are otherwise frequently used throughout our document.
TermDefinition
Knight-Swift/the Company/Management/We/Us/OurUnless otherwise indicated or the context otherwise requires, these terms represent Knight-Swift Transportation Holdings Inc. and its subsidiaries.
Annual ReportAnnual Report on Form 10-K
2012 ESPPEmployee Stock Purchase Plan, effective beginning in 2012, amended and restated in 2018
2014 Stock PlanThe Company's second amended and restated 2014 Omnibus Incentive Plan
2015
2017 Debt AgreementThe Company's unsecured credit agreement, entered into on September 29, 2017 and amended October 2, 2020, consisting of the 2017 Revolver and 2017 Term Loan, which are defined below.
2017 MergerThe September 8, 2017 merger of Knight and Swift, pursuant to which we became Knight-Swift Transportation Holdings Inc.
2017 RevolverRevolving line of credit under the 2017 Debt Agreement
2017 Term LoanThe Company's term loan under the 2017 Debt Agreement.
2018 RSAFourth Amendment to the Amended and Restated Receivables Sales Agreement, entered into in 2015 by Swift Receivables Company II, LLC with unrelated financial entities.
2018 RSAAmended and Restated Receivables Sales Agreement, entered into inon July 11, 2018 by Swift Receivables Company II, LLC with unrelated financial entities.
20132021 Debt AgreementKnight'sThe Company's unsecured credit facilityagreement, entered into on September 3, 2021, consisting of the 2021 Revolver and 2021 Term Loans, which are defined below.
20152021 Prudential NotesAn unsecured credit agreement, entered into on September 3, 2021, maturing October 2023 through January 2028
2021 RevolverRevolving line of credit under the 2021 Debt Agreement
2021 RSASwift's FourthFifth Amendment to the Amended and Restated CreditReceivables Sales Agreement, entered into on July 25, 2015April 23, 2021 by Swift Receivables Company II, LLC with unrelated financial entities.
20172021 Term LoansThe Company's term loans under the 2021 Debt Agreement, collectively consisting of the 2021 Term Loan A-1, 2021 Term Loan A-2 and 2021 Term Loan A-3.
2021 Term Loan A-1The Company's Creditterm loan under the 2021 Debt Agreement, maturing on December 3, 2022.
2021 Term Loan A-2The Company's term loan under the 2021 Debt Agreement, maturing on September 3, 2024.
2021 Term Loan A-3The Company's term loan under the 2021 Debt Agreement, maturing on September 3, 2026.
July 2021 Term LoanThe Company's term loan entered into on September 29, 2017July 6, 2021
2017 MergerAbileneSee complete description of the 2017 Merger included in Note 1 of the footnotes to the consolidated financial statements, included in Part II, Item 8 of this Annual Report on Form 10-K.
AbileneAbilene Motor Express, Inc. and its related entities
Abilene
ACTAAA Cooper Transportation, and its affiliated entity.
ACT AcquisitionSee complete descriptionThe Company's acquisition of 100% of the Abilene Acquisition includedsecurities of ACT on July 5, 2021
ASCAccounting Standards Codification Topic (or subtopic)
ASUAccounting Standards Update
BoardKnight-Swift's Board of Directors
BSBYBloomberg Short-Term Bank Yield Index
COVID-19Viral strain of a coronavirus which led the World Health Organization to declare a global pandemic in Note 5March 2020.
C-TPATCustoms-Trade Partnership Against Terrorism
CSACompliance Safety Accountability
DOTUnited States Department of the footnotes to the consolidated financial statements, includedTransportation
ELDElectronic Logging Device
EleosEleos Technologies, LLC
EmbarkEmbark Trucks Inc. and its related entities
EPAUnited States Environmental Protection Agency
EPSEarnings Per Share
ERPEnterprise Resource Planning system
FASBFinancial Accounting Standards Board
FLSAFair Labor Standards Act
FMCSAFederal Motor Carrier Safety Administration
GAAPUnited States Generally Accepted Accounting Principles
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

2021 ANNUAL REPORT ON FORM 10-K
GLOSSARY OF TERMS
The following glossary provides definitions for certain acronyms and terms used in Part II, Item 8 of this Annual Report on Form 10-K. These acronyms and terms are specific to our company, commonly used in our industry, or are otherwise frequently used throughout our document.
ASCAccounting Standards Codification Topic
ASUTermAccounting Standards UpdateDefinition
BoardGDPKnight-Swift's Board of Directors
C-TPATCustoms-Trade Partnership Against Terrorism
CSACompliance Safety Accountability
DOTUnited States Department of Transportation
ELDElectronic Logging Device
EPAUnited States Environmental Protection Agency
EPSEarnings Per Share
ERPEnterprise Resource Planning system
FASBFinancial Accounting Standards Board
FLSAFair Labor Standards Act
FMCSAFederal Motor Carrier Safety Administration
GAAPUnited States Generally Accepted Accounting Principles
GDPGross Domestic Product
LIBORLondon InterBank Offered Rate
KnightLTLLess-than-truckload
KnightUnless otherwise indicated or the context otherwise requires, this term represents Knight Transportation, Inc. and its subsidiaries
Knight RevolverRevolving line of credit under the 2013 Debt Agreement
MohaveMohave Transportation Insurance Company, a Swift wholly-owned captive insurance subsidiary
NASDAQMMERAC MME Holdings, LLC. and its subsidiaries, MME, Inc., Midwest Motor Express, Inc., and Midnite Express Inc.
NASDAQNational Association of Securities Dealers Automated Quotations
NLRBNational Labor Relations Board
NYSENew York Stock Exchange
Red RockRed Rock Risk Retention Group, Inc., a Swift wholly-owned captive insurance subsidiary
RevolverRSURevolving line of credit under the 2017 Debt AgreementRestricted Stock Unit
SECSecurities and Exchange Commission
SwiftSPAStock Purchase Agreement
SwiftUnless otherwise indicated or the context otherwise requires, this term represents Swift Transportation Company and its subsidiaries
Term LoanThe Company's term loan under the 2017 Debt Agreement
USUTXLUTXL Enterprises, Inc.
USThe United States of America
Warehousing Co.Warehousing company, acquired by the Company on January 1, 2020

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PART I
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
This Annual Report contains certain statements that may be considered "forward-looking statements" within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act") and Section 27A of the Securities Act of 1933, as amended. All statements, other than statements of historical or current fact, are statements that could be deemed forward-looking statements, including without limitation:
any projections of earnings, revenues, cash flows, dividends, capital expenditures, or other financial items,
any statement of plans, strategies, and objectives of management for future operations,
any statements concerning proposed acquisition plans, new services or developments,
any statements regarding future economic conditions or performance, and
any statements of belief and any statements of assumptions underlying any of the foregoing. 
In this Annual Report, forward-looking statements include statements we make concerning:
the ability of our infrastructure to support future growth, whether we grow organically or through potential acquisitions,
the future impact of the 2017 Merger and the Abilene Acquisition, including achievement of anticipated synergies,
the flexibility of our model to adapt to market conditions,
our ability to recruit and retain qualified driving associates,
future safety performance,
future performance of our segments or businesses,
our ability to gain market share,
the ability, desire, and effects of expanding our logistics, brokerage, LTL, and intermodal operations,
future equipment prices, our equipment purchasing or leasing plans, and our equipment turnover (including expected tractor trade-ins)trade-ins and containers in our Intermodal segment),
our ability to subleaselease equipment to independent contractors,
the impact of pending legal proceedings,
future claims experience, including insurance claims, coverage, coverage limits, premiums, and retention limits,
the expected freight environment, including freight demand, capacity, and volumes,
the balance between industry demand and capacity,
economic conditions and growth, including future inflation, consumer spending, supply chain conditions, and changes in GDP, growth,
the future impact of COVID-19 (including its variants),
our ability to obtain favorable pricing terms from vendors and suppliers,
expected liquidity and methods for achieving sufficient liquidity,
future fuel prices and the expected impact of fuel efficiency initiatives,
future expenses and cost structure and our ability to control costs,
future operating profitability and margin,
future third-party service provider relationships and availability,
future contracted pay rates with independent contractors and compensation arrangements with driving associates,
our expected need or desire to incur indebtedness and our ability to comply with debt covenants,
future capital expenditures and expected sources of liquidity, capital allocation, capital structure, capital requirements, and growth strategies and opportunities,
future mix of owned versus leased revenue equipment,
future asset utilization,
future return on capital,
future share repurchases and dividends,

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future tax rates,
future trucking industry capacity,
future rates,
future depreciation and amortization,
expected tractor and trailer fleet age,
future investment in and deployment of new or updated technology,
future classification of our independent contractors, including the impact of new laws and regulations regarding classification,
political conditions and regulations, including trade regulation, quotas, duties, or tariffs, and any future changes to the foregoing,
future purchased transportation expense, and
others.
Such statements may be identified by their use of terms or phrases such as "believe," "may," "could," "will," "would," "should," "expects," "designed," "likely," "foresee," "goals," "seek," "target," "forecast," "estimates," "projects," "anticipates," "plans," "intends," "hopes," "strategy," "objective," "mission," "continue," "outlook," "potential," "feel," and similar terms and phrases. Forward-looking statements are based on currently available operating, financial, and competitive information. Forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, which could cause future events and actual results to materially differ from those set forth in, contemplated by, or underlying the forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those discussed in Item 1A. "Risk Factors" of this Annual Report, and various disclosures in our press releases, stockholder reports, and other filings with the SEC.
All such forward-looking statements speak only as of the date of this Annual Report. You are cautioned not to place undue reliance on such forward-looking statements. We expressly disclaim any obligation or undertaking to publicly release any updates or revisions to any forward-looking statements contained herein, to reflect any change in our expectations with regard thereto, or any change in the events, conditions, or circumstances on which any such statement is based.


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ITEM 1.BUSINESS
Certain acronyms and terms used throughout this Annual Report are specific to our company, commonly used in our industry, or are otherwise frequently used throughout our document. Definitions for these acronyms and terms are provided in the "Glossary of Terms," available in the front of this document.
Company Overview
Knight-Swift Transportation Holdings Inc. is North America'sone of the largest and most diversified freight transportation companies, operating one of the largest truckload carrierfleets in North America and a provider of transportation solutions, from itsis headquartered in Phoenix, Arizona headquarters.Arizona. The Company provides multiple full truckload transportation, LTL, intermodal, and logistics services using a nationwide network of business units and terminals in the US and Mexico to serve customers throughout North America. In addition to its full truckload and LTL services, Knight-Swift also contracts with third-party capacity providers to provide a broad range of truckload servicesshipping solutions to its customers while creating quality driving jobs for our driving associates and successful business opportunities for independent contractors.
During 2019,2021, we covered 1.41.3 billion loaded miles for shippers throughout North America, contributing to consolidated total revenue of $4.86.0 billion and consolidated operating income of $427.4965.7 million. During 2019, we2021, the Truckload segment operated an average of 16,43218,019 tractors (comprised of 16,166 company tractors 2,445and 1,853 independent contractor tractors,tractors) and 58,315 trailers within our Trucking segment. Additionally, we67,606 trailers. Our LTL segment operated an average 643of 2,735 tractors and 9,8627,413 trailers. Additionally, the Intermodal segment operated an average of 597 tractors and 10,847 intermodal containers within our Intermodal segment.containers. Our threefour reportable segments are Trucking,Truckload, Logistics, LTL, and Intermodal.
We have historically grown through a combination of organic growth, as well as through mergers and acquisitions (discussed below). Mergers and acquisitions have enhanced Knight's and Swift's businessesour business and service offerings with additional terminals, driving associates, revenue equipment, and capacity. Our multiple service offerings, capabilities, and transportation modes enable us to transport, or arrange transportation for, general commodities for our diversified customer base throughout the contiguous US and Mexico using our equipment, information technology, and qualified driving associates and non-driver employees. We are committed to providing our customers with a wide range of full truckload, intermodal,logistics, LTL, and logisticsintermodal services and continuing to invest considerable resources toward developing a range of solutions for our customers across multiple service offerings and transportation modes. Our overall objective is to provide full truckload, intermodal,logistics, LTL, and logisticsintermodal services that, when combined, lead the industry forin margin and growth, while providing efficient and cost-effective solutions for our customers.
Business Combinations and Investments
2017 Merger
On September 8, 2017, weWe became Knight-Swift Transportation Holdings Inc. upon the effectiveness of theon September 8, 2017 Merger. We accounted forthrough the 2017 Merger usingtransaction. Since 1966, we have continuously expanded our nationwide network and our service offerings through organic growth, as well as through the acquisition method of accounting in accordance with GAAP. GAAP requires that either Knight or Swift is designated as the acquirer for accounting and financial reporting purposes ("Accounting Acquirer"). Based on the evidence available, Knight was designated as the Accounting Acquirer while Swift was the acquirer for legal purposes. Therefore, Knight’s historical results of operations replaced Swift’s historical results of operations for all periods prior to the 2017 Merger. twenty-two companies.
See Note 51 and Note 4 in Part II, Item 8 ofin this Annual Report, for more detailsinformation regarding the 2017 Merger.
Historical Acquisitions
Knight — Since 1999, Knight has acquired all of the outstanding stock of six short-to-medium haul truckload carriers, or has acquired substantially all of the trucking assets of such carriers, including Iowa-based Barr-Nunn (acquired in 2014),Merger and Virginia-based Abilene (acquired in 2018).
Swift — Since 1966, Swift has completed fourteen acquisitions, including the 2013 acquisition of Central Refrigerated Transportation, LLC (formerly Central Refrigerated Transportation, Inc.). On January 1, 2020 Swift acquired a small company to complement its suite of services.
Joint Ventures
our recent acquisitions. See Note 16 in Part II, Item 8 in this Annual Report, regarding Knight's joint ventures.

our partnership agreements with Transportation Resource Partners and our October 2020 investment in a transportation-related company.
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Partnerships
See Note 7 in Part II, Item 8 in this Annual Report, regarding Knight's partnership agreements with Transportation Resource Partners.
Industry and Competition
TruckloadThe trucking industry has two primary types of motor carriers: full truckload and LTL. Full truckload carriers represent the largest part of the transportation supply chain for most retail and manufactured goods in North America and typically transport a full trailer (or container) of freight for a single customer from origin to destination without intermediate sorting and handling. By contrast, LTL carriers typically transport multiple shipments from multiple customers in the same trailer (or container). LTL shipments are then sent through a network of service centers where they may be conveyed to other trailers with nearby destinations. Generally, the full truckload industry is compensated based on miles, whereas the less-than-truckloadLTL industry is compensated based on package size and/or weight.freight density and length of haul. Overall, the US truckingtransportation and logistics industry is large, fragmented, and highly competitive. We compete with thousands of full truckload carriers, most of whom operate significantly smaller fleets than we do.do, as well as a number of national, regional, and inter-regional LTL carriers. Our trucking segments compete with other motor carriers for the services of driving associates, independent contractors, and management and other employees. To a lesser extent, our intermodal and logistics businesses compete with railroads, less-than-truckload carriers, logistics providers, and other transportation companies. Our logistics businesses compete with other logistics companies for the services of third-party capacity providers and management employees.
Our industry has recently encountered the following major economic cycles since 2010:
cycles:
PeriodEconomic Cycle
PeriodEconomic Cycle
2010 — 2013moderate recovery, from prior years' recession. The industry freight data began to show positive trends for both volume and pricing. The slow, steady growth is a result of moderate increases in gross domestic product, coupled with a tighter supply of available tractors. Trends in supply of available tractors were lower due to several years of below average truck builds, an increase in truckload fleet bankruptcies in 2009 and 2010, increasing equipment prices due to stringent EPA requirements, less available credit, and less driver availability.
2014 — 2016return to pre-recession levels and relative stabilization. In 2014, total spending on transportation, which fell during the 2007 – 2009 recession, returned to pre-recession levels. Truck tonnage grew throughout 2014, followed by decelerating growth in 2015, and relative stabilization in 2016. Capacity became looser in 2015 and 2016, as inventory levels were high and large volumes of tractor purchases created a supply/demand imbalance, putting pressure on pricing. Fuel prices declined.
2017 — 2019strong cycle, driven by a record pricing climate through 2018. The industry experienced increased demand through 2018 for transportation services, including contract and non-contract market demand, partially due to a strong retail season. Capacity became tighter in the second half of 2017 and throughout 2018, due to increasing government regulation, the driver shortage, and severe storms interrupting business, among other factors. Capacity increased in the second half of 2018 leading to an oversupply during 2019, lower spot market rates, and downward pressure on contract rates.
2020 — 2021the COVID-19 pandemic led to a new source of volatility throughout the global market in 2020. Economic activities were significantly curtailed across the nation at the onset of 2020, but began to resume in the second half of the year. Accordingly, demand in the freight market was weak in the beginning of the year and gradually strengthened in the second half of the year. The 2020 freight environment was disrupted, with unpredictable shipping volumes, shifts in pricing, and continued challenges in driver sourcing throughout the year. The COVID-19 pandemic continued to be a source of volatility throughout the global market in 2021 creating supply chain disruptions, increased demand for many products, tight transportation capacity and congestion at ocean ports and rail terminals.
The principal means of competition in our industry are customer service and relationships, capacity, and price. In times of strong freight demand, customer service and capacity become increasingly important, and in times of weak freight demand, pricing becomes increasingly important. Most truckloadtrucking contracts (other than dedicated contracts) do not guarantee truck availability or shipment volumes. Pricing is influenced by supply and demand.
The trucking industry faces the following primary challenges, which we believe we are well-positioned to address, as discussed under "Our Competitive Strengths" and "Our Mission and Company Strategy," below:
tightening industry capacity;
cumulative impacts of regulatory initiatives, such as ELDs, hours-of servicehours-of-service limitations for drivers, and others;
uncertainty in the economic environment, including changing supply chain and consumer spending patterns;
driver shortages;
increased insurance costs as significant verdicts and settlement amounts for accident claims impact the industry;
significant and rapid fluctuations in fuel prices; and
increased prices for new revenue equipment, design changes of new engines, and volatility in the used equipment sales market.

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Our Competitive Strengths
WeAs a provider of multiple transportation solutions, including one of North America's largest truckload fleets, we believe that our principal competitive strengths are our regional presence, customer service (including our ability to provide multiple transportation solutions and configuration of equipment that satisfies customers' needs), operating efficiency, cost control, and technological enhancements in our revenue equipment and supporting back-office functions.
functions, and our diverse offerings that allow us to offer multiple transportation services.
Regional Truckload and LTL Presence
We believe that regional truckload operations, which expanded with the merger between Knight2017 Merger and Swift,our recent acquisitions of ACT, MME, and other companies, offer several advantages, including:
• obtaining greater freight volumes,
• achieving higher revenue per mile by focusing on high-density freight lanes to minimize non-revenue miles,
• enhancing our ability to recruit and train qualified driving associates,
• enhancing safety and driver development and retention,
• enhancing our ability to provide a high level of service and consistent capacity to our customers,
• enhancing accountability for performance and growth,
• furthering our truckingfull truckload capabilities to provide various shipping solutions to our customers, and
• expanding into the LTL space,
• furthering our logistics capabilities to contract with more third-party capacity providers, and
• extending our transportation infrastructure, knowledge and scale to strengthen our relationships with third party providers.
Operating Efficiency and Cost Control
We expect to increase operational efficiencies through the adoption of best practices and capabilities from each of Knight and Swift,across our brands, as well as the overall size of our combined company. We operate modern tractors and trailers in order to obtain operating efficiencies and attract and retain driving associates. We believe a generally compatible fleet of tractors and trailers simplifies our maintenance procedures and reduces parts, supplies, and maintenance costs. We regulate vehicle speed, which we believe will maximize fuel efficiency, reduce wear and tear, and enhance safety. We continue to update our fleet with more fuel-efficient post-2014 US EPA emission compliant engines, install aerodynamic devices on our tractors, and equip our trailers with trailer blades, which have led to meaningful improvements in fuel efficiency. We continue to invest capital in new equipment in our Truckload and LTL businesses to take advantage of improvements in tractor cab aerodynamic drag, engine efficiency, and developing fuel saving technologies, including continuing our investment in installing Start-Stop idle reduction technology in all of our tractors to reduce emissions. Our logistics and intermodal businesses focus on effectively optimizing and meeting the transportation and logistics requirements of our customers and providing customers with various sources and modes of transportation capacity across our nationwide service network. We invest in technology that enhances our ability to optimize our freight opportunities while maintaining a low cost per transaction.
Customer Service
We strive to provide superior, on-time service at a meaningful value to our customers and seek to establish ourselves as a preferred truckload and logisticstransportation solutions provider for our customers. We provide full truckload and LTL capacity for customers in high-density lanes, where we can provide them with a high level of service, as well as flexible and customized logistics services on a nationwide basis. Our truckingfull truckload and LTL services together include dry van, refrigerated, and drayage, which also include dedicated, expedited, and cross-border truckload services,lanes, customized according to customer needs. Our logistics and intermodal services include brokerage, intermodal, and certain logistics, freight management, and non-trucking services, which provide various shipping alternatives and transportation modes for customers by utilizing our expansive network of third-party capacity providers and rail partners. We price our trucking,full truckload, LTL, logistics, and intermodal services commensurately with the level of service our customers require and market conditions. By providing customers a high level of service, we believe we avoid competing solely based on price.
Using Technology that Enhances Our Business
We purchase and deploy technology that we believe will allow us to operate more safely, securely, and efficiently. Substantially all of our company-owned tractors are equipped with in-cab communication devices that enable us to communicate with our driving associates, obtain load position updates, manage our fleets, and provide our customers with freight visibility, as well as with ELDs that automatically record our driving associates' hours-of-service. The majority of our trailers are equipped with trailer-tracking technology that allows us to better manage our trailers. We have purchased and developed software for our logistics businesses that provides greater visibility of the capacity of our third-party providers and enhances our ability to provide our customers with solutions that offer a superior level of service. We have automated many of our back-office functions, and we continue to invest in technology that we expect will allow us to better serve our customers and improve overall efficiency.


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Diverse Service Offerings with Multiple Transportation Solutions
With the addition of LTL services in 2021, we have further expanded our service capabilities while diversifying our revenue streams. We believe our diversified mix and scope of full truckload, LTL, logistics and intermodal services, combined with our value-added service offerings, allows us to provide our customers with one source to meet their shipping and logistics needs, and represents a significant advantage over most of our competitors. We continue to invest considerable resources toward developing a range of solutions for our customers across multiple service offerings and transportation modes to continue to provide efficient and cost-effective solutions for our customers.
Our Mission and Company Strategy
Our mission is to operate full truckload, LTL, logistics, intermodal and related businesses that are industry leading in both margin and growth, while providing cost-effective solutions for our customers. Our success depends on our ability to efficiently and effectively manage our resources in providing transportation and logistics solutions to our customers, as well as our ability to leverage efficiencies and best practices between Knight and Swift.across our brands. We evaluate growth opportunities based on customer demand and supply chain trends, availability of drivers and third-party capacity providers, expected returns on invested capital, expected net cash flows, and our company-specific capabilities.
Segment Operating Strategies
TruckingTruckload SegmentOur operating strategy for our TruckingTruckload segment is to achieve a high level of asset utilization within a highly disciplined operating system, while maintaining strict controls over our cost structure. We hope to achieve these goals by primarily operating in high-density, predictable freight lanes and attempting to develop and expand our customer base around each of our terminals by providing multiple truckload services for each customer. We believe this operating strategy allows us to take advantage of the large amount of freight transported in the markets we serve. Our terminals enable us to better serve our customers and work more closely with our driving associates. We operate a premium modern fleet that we believe appeals to driving associates and customers, reduces maintenance expenses and driving associate and equipment downtime, and enhances our fuel and other operating efficiencies. We employ technology in a cost-effective manner to assist us in controlling operating costs and enhancing revenue.
Logistics SegmentOur operating strategy for our Logistics segment is to match the shipping needs of our customers with the capacity provided by our network of third-party carriers and our rail providers. Our goal is to increase our market presence, both in existing operating regions and in other areas where we believe the freight environment meets our operating strategy, while seeking to achieve industry-leading operating margins and returns on investment.
LTL SegmentOur LTL segment was established in 2021 by the ACT and MME acquisitions. Our operating strategy for our LTL segment is to provide regional direct service and serve our customers' national transportation needs by utilizing key partner carriers for coverage areas outside of our network. Significant investment is needed to establish and maintain a network of LTL service centers. The substantial fixed costs and capital expenditures required for LTL carriers make it challenging for new entrants or small operators to effectively compete with established carriers. We plan to grow the LTL segment through organic growth and acquisitions and believe a national expansion effort will provide enhanced value to our customers. Our business strategy includes continued yield management evaluation of each customer's commodity mix and shipping volume their corresponding lanes. Additionally, a key component of our strategy is our focused effort with respect to improving utilization of our people, technology, and other resources to maximize operational efficiency while ensuring our customers' freight is delivered safely and timely.
Intermodal SegmentOur operating strategy for our Intermodal segment is to complement our regional operating model, allowing us to better serve customers in longer haul lanes, and reducewhile leveraging our investmentinvestments in fixed assets. We have intermodal agreements with most major North American rail carriers.
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Growth Strategies
We believe we have the terminal network, systems capability, and management capacity to support substantial growth. We have established a geographically diverse network that we believe can support a substantial increase in freight volumes, organic or acquired.both organically and through acquisitions. Our network and business lines afford us the ability to provide multiple transportation solutions for our customers, and we maintain the flexibility within our network to adapt to freight market conditions. We believe our unique mix of regional management, together with our consistent efforts to centralize certain business functions to achieve collective economies of scale, allow us to develop future company leaders with relevant operating and industry experience, minimize the potential diseconomies of scale that can come with growth in size, take advantage of regional knowledge concerning capacity and customer shipping needs, and manage our overall business with a high level of performance accountability.
Strengthening our customer relationshipsWe market our services to both existing and new customers who value our broad geographic coverage, suite of transportation and logistics services, and industry-leading full truckload and LTL capacity and freight lanes that complement our existing operations. We seek customers who will diversify our freight base. We market our Truckload and LTL dry van, refrigerated, drayage, brokerage, and intermodal services, including dedicated and cross-border services within those offerings, to logistics customers seeking a single-source provider of multiple services but do not currently take advantage of our array of full truckload and LTL solutions.
Improving asset productivityWe focus on improving the revenue generated from our tractors and trailers without compromising safety. We anticipate that we can accomplish this objective through increased miles driven and rate per mile.mile in our Truckload businesses. In our LTL business, our primary focus is increasing density and obtaining appropriate yield, measured by revenue per hundredweight.
Acquiring and growing opportunisticallyWe regularly evaluate potential opportunities for mergers, acquisitions, and other development and growth opportunities. In addition toWe became Knight-Swift Transportation Holdings Inc. on September 8, 2017 through the merger between Knight2017 Merger transaction. Since 1966, we have continuously expanded our nationwide network and Swift in 2017, since 1999, Knight has acquired six short-to-medium haul truckload carriers, includingour service offerings through organic growth, as well as through the acquisitionsacquisition of Barr-Nunn during 2014 and Abilene during 2018, and Swift has acquired fourteen companies since 1966.twenty-two companies.
Expanding existing Truckload terminalsHistorically, a substantial portion of our Truckload revenue growth has been generated by our expansion into new geographic regions through the opening of additional terminals. Although we continue to seek opportunities to further increase our Truckload business in this manner, our primary focus is on developing and expanding our existing terminals by strengthening our customer relationships, recruiting qualified driving associates and non-driver employees, adding new customers, and expanding the range of transportation and logistics solutions offered from these terminals.
Diversifying our service offeringsWe are committed to providing our customers a broad and growing range of full truckload, LTL, and logistics services and continue to invest considerable resources toward developing a range of solutions for our customers. We believe that these offerings contribute meaningfully to our results and reflect our strategy to bring complementary services to our customers to assist them with their supply chain needs. We plan to continue to leverage our nationwide footprint and expertise to add value to our customers through our diversified service offerings.

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Customers and Marketing
Marketing
Our marketing mission is to be a strategic, efficient transportation capacity partner for our customers by providing truckloadtransportation and logistics solutions customizable to the unique needs of our customers. We deliver these capacity solutions through our network of owned assets, independent contractors, third-party capacity providers, and rail providers. The diverse and premium services we offer provide a comprehensive approach to providing ample supply chain solutions to our customers. At December 31, 2019,2021, we had a sales staff of approximately 100200 individuals across the US and Mexico, who work closely with management to establish and expand accounts. Our sales and marketing leaders are members of our senior management team, who are assisted by other sales professionals in each segment. Our sales team emphasizes our industry-leading service, environmental leadership, and our ability to accommodate a variety of customer needs, provide consistent capacity, and financial strength and stability.
Customers
Our customers are typically large corporations in the retail (including discount and online retail), food and beverage, consumer products, paper products, transportation and logistics, housing and building, automotive, and manufacturing industries. Many of our customers have extensive operations, geographically distributed locations, and diverse shipping needs.
Consistent with industry practice, our typical customer contracts (other than dedicated contracts) do not guarantee shipment volumes by our customers or truck availability by us. This affords us and our customers some flexibility to
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negotiate rates in response to changes in freight demand and industry-wide truck capacity. Our dedicated services within the Trucking segmentTruckload and LTL segments assign particular driving associates and revenue equipment to prescribed routes, pursuant to multi-year agreements. This dedicated service provides individual customers with a guaranteed source of capacity, and allows our driving associates to have more predictable schedules and routes. Under our dedicated transportation services, we provide driving associates, equipment, maintenance, and, in some instances, transportation management services that supplement the customer's in-house transportation department.
A majority of our terminals are linked to our corporate information technology system insystems at our Phoenix headquarters. The capabilities of this system and its software enhance our operating efficiency by providing cost-effective access to detailed information concerning equipment location and availability, shipment tracking, on-time delivery status, and other specific customer requirements. The system also enables us to respond promptly and accurately to customer requests and assists us in geographically matching available equipment with customer loads. Additionally, our customers can track shipments and obtain copies of shipping documents via our website. We also provide electronic data interchange services to customers desiring these services.
We believe our fleet capacity, terminal network, customer service and breadth of services offer a competitive advantage to major shippers, particularly in times of rising freight volumes when shippers must quickly access capacity across multiple facilities and regions.
We strive to maintain a diversified customer base. Services provided to the Company'sour largest customer Walmart, generated 13.3%, 14.6%,16.1% and 15.8%16.8% of total revenue in 2019, 2018,2021 and 2017,2020, respectively. Revenue generated by Walmartour largest customer is reported in each of our reportable operating segments. No other customer accounted for 10% or more of total revenue in 2019, 2018,2021 or 2017.2020.
Our top 25 customers drive a substantial portion of our total revenue, as follows (amounts reflect only Swift's results prior to the 2017 Merger date,follows:
In 2021, our top 25, top 10, and Knight-Swift's results after the 2017 Merger date):top 5 customers accounted for 54.9%, 40.9%, and 29.4% of our total revenue, respectively.
In 2020, our top 25, top 10, and top 5 customers accounted for 56.5%, 40.8%, and 30.7% of our total revenue, respectively.
In 2019, our top 25, top 10, and top 5 customers accounted for 49.7%, 33.5%, and 25.5%of our total revenue, respectively.
In 2018, our top 25, top 10, and top 5 customers accounted for 50.1%, 34.6%, and 27.2% of our total revenue, respectively.
In 2017, our top 25, top 10, and top 5 customers accounted for 56.6%, 39.7%, and 31.7% of our total revenue, respectively.

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Revenue Equipment
We operate a modern fleet of company tractors to help attract and retain driving associates, promote safe operations, and reduce maintenance and repair costs.
In 2019,2021, we obtained allthe majority of our revenue equipment only through cash purchases, and in the future, we will continue to monitor leasing opportunities. We typically obtain tractors and trailers manufactured to our specifications in order to meet a wide variety of customer needs. Growth of our tractor and trailer fleet is determined by market conditions and our experience and expectations regarding equipment utilization. In acquiring revenue equipment, we consider a number of factors, including economy, price, rate, economic environment, technology, warranty terms, manufacturer support, driving associate comfort, and resale value. We maintain strong relationships with our equipment vendors and have the financial flexibility to react as market conditions dictate.
Our current policyapproach is to replace our tractors between 42 months3 years and 60 months9 years after purchase and to replace our trailers over a five- to ten-year period.every seven or more years. Changes in the current market for used tractors and trailers, regulatory changes, and difficult market conditions faced by tractor and trailer manufacturers, may result in price increases that may affect the period of time for which we operate our equipment.
Our newer equipment has enhanced features, which we believe tends to lower the overall life cycle costs by reducing safety-related expenses, lowering repair and maintenance expenses, improving fuel economy, and improving driving associate satisfaction. In 20202022 and beyond, we will continue to monitor the appropriateness of this relatively short tractor trade-in cycle against the lower capital expenditure and financing costs of a longer tractor trade-in cycle, based on current and future business needs.
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EmployeesHuman Capital
Employees
The strength of our company is our people, working together with common goals. There were approximately 23,60027,400 full-time employees in our total headcount of approximately 23,80027,900 employees as of December 31, 2019,2021, which was comprised of:
Company driving associates (including driver trainees)17,60019,400 
Technicians and other equipment maintenance personnel1,2001,400 
Corporate and terminal leadership and support personnel5,0007,100 
Total23,80027,900 
As of December 31, 2019,2021, we had approximately 9001,300 Trans-Mex driving associates in Mexico that were represented by a union.
Company Driving Associates
We recognize that the recruitment, training, and retention of a professional driving associate workforce, which is one of our most valuable assets, areis essential to our continued growth and meeting the service requirements of our customers. In order to attract and retain safe driving associates who are committed to the highest levels of customer service and safety, we focus our operations for driving associates around a collaborative and supportive team environment. WeTo help retain driving associates we provide late model and comfortable equipment, direct communication with senior management, competitive wages and benefits, and other incentives designed to encourage driving associate safety, retention, and long-term employment. WeSome examples of these incentive programs include our Million Miler, military apprenticeship, and Drive for a Degree programs. To help recruit drivers, we have established various driving academies across the US. Our academies are strategically located in areas where external driver-training organizations were lacking. In other areas of the US, we have contracted with driver training schools, which are managed by third parties. There are certain minimum qualifications for candidates to be accepted into the academy, including passing the DOT physical examination and drug/alcohol screening.
Terminal Staff
Most of our large terminals are staffed with terminal leaders, fleet leaders, driver leaders, planners, safety coordinators, shop leaders, technicians, and customer service representatives. Our terminal leaders work with driver leaders, customer service representatives, and other operations personnel to coordinate the needs of both our customers and our driving associates. Terminal leaders are also responsible for serving existing customers in their areas. Fleet leaders supervise driver leaders, who are responsible for the general operation of our trucks and their driving associates,

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focusing on driving associate retention, productivity per truck, fuel consumption, fuel efficiency (with respect to driver-controllable idle time), safety, and scheduled maintenance. Customer service representatives are assigned specific customers to ensure specialized, high-quality service, and frequent customer contact.
Diversity and Inclusion
Diversity, equity, and inclusion are pillars supporting our innovative culture. We are committed to fostering a diverse workforce and an inclusive environment, which we believe allows us to leverage the effects of diversity to achieve a competitive business advantage. These efforts are evidenced in our hiring practices, employee training programs and diversity and inclusion networks demonstrate when diverse voices and perspectives are heard, unique, powerful, and creative solutions are the result. It is with this commitment in mind that we build upon our Employee Resource Groups ("ERG"s) now and in the immediate future. Sponsored and supported by leadership, our ERGs as of December 31, 2021 include the Women in Leadership Network and Somos for LatinX employees and allies. Additionally, we formed a special committee in 2021 that was tasked with launching Inspire, a resource group intended to support Black and African American employees and allies, which we expect to roll out to our employees during the first quarter of 2022. These, and additional groups launching soon are integral to ensuring different voices and perspectives contribute to our strategy for long-term profitable growth.
Succession Planning and Talent Management
We regularly review talent development and succession plans to identify and develop a pipeline of talent to maintain business operations. We understand the potential costs and risks of bringing in an outside executive officer in
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Independent Contractors
today’s environment, and that businesses are often, but not always, more successful in promoting internal candidates. Accordingly, the Board makes an effort to identify potential successors for those positions long in advance of any potential positional vacancies, perform skills gap analyses for those internal candidates, and provide training and exposure on those gap areas to those candidates in order to develop better potential successors. The Board is primarily responsible for succession planning for the CEO, but also participates in succession planning discussions for other executive officer positions. We believe that our culture, compensation structure, long-term equity program, and robust training and development program provide motivation for talented leaders to remain with the Company.
Independent Contractors
In addition to Knight-Swift-employedour employed driving associates, we enter into contractor agreements with third parties who own and operate tractors (or hire their own driving associates to operate the tractors) that service our customers. We pay these independent contractors for their services, based on a contracted rate per mile. By operating safely and productively, independent contractors can improve their own profitability and ours. Independent contractors are responsible for most costs incurred for owning and operating their tractors. In 2019,2021, independent contractors comprised 13.0%8.7% of our total fleet, as measured by average tractor count.
Safety and Insurance
Safety
We are committed to safe and secure operations. We conduct an intensive driver qualification process, including defensive driving training. We require prospective drivers to meet higher qualification standards than those required by the DOT, including extensive background checks and hair follicle drug testing. We regularly communicate with drivers to promote safety and instill safe work habits through effective use of various media and safety review sessions. We dedicate personnel and resources designed to ensure safe operation and regulatory compliance. We employ technology to assist us in managing risks associated with our business. We have event recorders in all of our tractors, which are used daily by drivers and operations leaders to provide feedback and coaching in regard to driving behaviors. In addition, we have an innovative recognition program for driver safety performance and emphasize safety through our equipment specifications and maintenance programs. Our Corporate Directors of Safety review all accidents and report weekly to leadership.
Insurance
The primary claims arising in our business consist of auto liability, including personal injury, property damage, physical damage, and cargo loss. We self-insure for a significant portion of our claims exposure and related expenses. We also maintain insurance that covers our directors and officers for losses and expenses arising out of claims, based on acts or omissions in their capacities as directors or officers. While under dispatch and our operating authority, the independent contractors we contract with are covered by our liability coverage and self-insurance retention limits. However, each is responsible for physical damage to his or her own equipment, occupational accident coverage, and liability exposure while the truck is used for non-company purposes. Additionally, fleet operators are responsible for any applicable workers' compensation requirements for their employees.
We insure certain casualty risks through our wholly-owned captive insurance subsidiaries, Mohave and Red Rock. Mohave and Red Rock provide reinsurance associated with a share of our automobile liability risk. In addition to insuring a proportionate share of our corporate casualty risk, Mohave provides reinsurance coverage to third-party insurance companies associated with ourwho provide insurance coverage for affiliated companies'carriers and independent contractors.
Please refer to Note 1312 in Part II, Item 8 of this Annual Report for more information about our insurance policies and self-insurance retention limits.
Fuel
We actively manage our fuel purchasing network in an effort to maintain adequate fuel supplies and reduce our Truckload and LTL fuel costs. Additionally, we utilize a fuel surcharge program to pass a majority of increases in fuel costs to our customers. In 2019,2021, we purchased 18.5%15.1% of our fuel in bulk at our Swift, Knight, and dedicated customer locations across the US and Mexico. We purchased substantially all of the remainder through a network of retail truck stops with which we have negotiated volume purchasing discounts. The volumes we purchase at terminals and through the fuel network vary
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based on procurement costs and other factors. We seek to reduce our fuel costs by routing our driving associates to truck stops when fuel prices at such stops are cheaper than the bulk rate paid for fuel at our terminals. We primarily store fuel in above-ground storage tanks at most of our other bulk fueling terminals. We believe that we are sufficiently in compliance with applicable environmental laws and regulations relating to the storage and dispensing of fuel.

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Seasonality
InSee Note 1 in Part II, Item 8 in this Annual Report, regarding the transportation industry, resultsimpact of operations generally follow a seasonal pattern. Freight volumes in the first quarter are typically lower due to less consumer demand, customers reducing shipments following the holiday season, and inclement weather. At the same time, operating expenses generally increase, and tractor productivity of the Company's fleet, independent contractors, and third-party carriers decreases during the winter months due to decreased fuel efficiency, increased cold-weather-related equipment maintenance and repairs, and increased insurance claims and costs attributed to higher accident frequency from harsh weather. These factors typically lead to lower operating profitability, as compared to other parts of the year. Additionally, beginning in the latter half of the third quarter and continuing into the fourth quarter, the Company typically experiences surges pertaining to holiday shopping trends toward delivery of gifts purchased over the Internet as well as the length of the holiday season (consumer shopping days between Thanksgiving and Christmas). However, cyclical changes in the trucking industry, including imbalances in supply and demand, can override the seasonality faced in the industry.
on our operations.
Environmental Regulation
General
We have bulk fuel storage and fuel islands at many of our terminals, as well as vehicle maintenance, repair, and washing operations at some of our facilities, which exposes us to certain environmental risks. Soil and groundwater contamination have occurred at some of our facilities in prior years, for which we have been responsible for remediating the environmental contamination. Also, a small percentage of our total shipments contain hazardous materials, which are generally rated as low to medium-risk, and subject us to a wide array of regulation. In the past, we have been responsible for the costs of clean-up of cargo and diesel fuel spills caused by traffic accidents or other events.
We have instituted programs to monitor and mitigate environmental risks and maintain compliance with applicable environmental laws governing the hauling, handling, and disposal of hazardous materials, fuel spillage or seepage, emissions from our vehicles and facilities, engine-idling, discharge and retention of storm water, and other environmental matters. As part of our safety and risk management program, we periodically perform internal environmental reviews. We are a Charter Partner in the EPA's SmartWay Transport Partnership, a voluntary program promoting energy efficiency and air quality. We believe that our operations are in material compliance with current laws and regulations and do not know of any existing environmental condition that would reasonably be expected to have a material adverse effect on our business or operating results.
If we are held responsible for the cleanup of any environmental incidents or conditions caused by our operations or business, or if we are found to be in violation of applicable laws or regulations, we could be subject to clean-up costs and other liabilities, including substantial fines, penalties and/or civil and criminal liability, any of which could have a material, adverse effect on our business and results of operations. We have paid penalties for spills and violations in the past; however, they have not been material to our financial results or position.
Greenhouse Gas ("GHG") Emissions and Fuel Efficiency Standards
California ARB In 2008, the State of California's Air Resources Board ("ARB") approved the Heavy-Duty Vehicle GHG Emission Reduction Regulation in efforts to reduce GHG emissions from certain long-haul tractor-trailers that operate in California by requiring them to utilize technologies that improve fuel efficiency (regardless of where the vehicle is registered). The regulation, which became effective in 2010, required owners of long-haul tractors and 53-foot trailers to be EPA SmartWay certified or replace or retrofit their vehicles with aerodynamic technologies and low-rolling resistance tires. The regulation also contained certain emissions and registration standards for refrigerated trailers.
In December 2013, California's ARB approved regulations to align its GHG emission standards and test procedures, as well as its tractor-trailer GHG regulation, with the federal Phase 1 GHG regulation (see below).

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Additionally, in February 2018, California's ARB approved California Phase 2 standards that generally align with the federal Phase 2 standards, with some minor additional requirements, and which would stay in place even if the federal Phase 2 standards are affected by action from President Trump's administration.affected. In February 2019, the California Phase 2 standards became final. The
In June 2020, ARB has also recently announced intentionspassed the Advanced Clean Trucks ("ACT") regulation, requiring original equipment manufacturers to adopt regulations ensuring that 100.0%begin shifting towards greater production of zero-emission heavy duty tractors operatingstarting in 2024. Under ACT, by 2045, every new tractor sold in California arewill need to be zero-emission. While ACT does not apply to those simply operating with battery tractors in California, it could affect the cost and/or fuel cell-electric enginessupply of traditional diesel tractors and may lead to similar legislation in other states or at the future. Whether these regulations will ultimately be adopted remains unclear.federal level.
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EPA and NHTSA The EPA and the National Highway Traffic Safety Administration ("NHTSA") beganhave begun taking coordinated steps in support of a new generation of clean vehicles and engines through reduced GHG emissions and improved fuel efficiency at a national level. In September 2011, the EPA finalized the Phase 1 federal regulations for controlling GHG emissions, related to efficient engines, use of auxiliary power units, mass reduction, low-rolling resistance tires, improved aerodynamics, improved transmissions, and reduced accessory loads.
Phase 1 In September 2011, the EPA finalized federal regulations for controlling GHG emissions, beginning with model-year 2014 medium- and heavy-duty engines and vehicles and increasing in stringency through model-year 2018. The federal regulations relate to efficient engines, use of auxiliary power units, mass reduction, low-rolling resistance tires, improved aerodynamics, improved transmissions, and reduced accessory loads.
Phase 2In June 2015, the EPA and NHTSA, working in concert with California's ARB, formally announced a proposed national program establishing Phase 2 of the GHG emissions and fuel efficiency standards for medium- and heavy-duty vehicles for model-year 2018 and beyond. In August 2016, the EPA and NHTSA announced the final rule regarding Phase 2, which builds upon Phase 1, and would apply to certain trailer types beginning with model-year 2018 for EPA standards (voluntary for NHTSA standards through model-year 2020). Tractors and certain trailer types would be subject to the Phase 2 standards beginning with model-year 2021, increasing in stringency through model-year 2024, and phasing in completely by model-year 2027. This rule marks the first time federal mandates will be applied to trailers, with respect to aerodynamics and low-rolling resistance tires. The final rule was effective December 27, 2016.
Phase 2In August 2016, the EPA and NHTSA announced the final rule regarding Phase 2, which builds upon Phase 1, and would apply to certain trailer types beginning with model-year 2018 for EPA standards (voluntary for NHTSA standards through model-year 2020). Tractors and certain trailer types would be subject to the Phase 2 standards beginning with model-year 2021, increasing in stringency through model-year 2024, and phasing in completely by model-year 2027. This rule marks the first time federal mandates will be applied to trailers, with respect to aerodynamics and low-rolling resistance tires. The final rule was effective in December 2016, but has since been subject to challenges and delays. In October 2017, the EPA announced a proposal to repeal the Phase 2 standardsStandards as they relate to gliders (which mix refurbished older components, including transmissions and pre-emission-rule engines, with a new frame, cab, steer axle, wheels, and other standard equipment). The outcome of such, which proposal is still undetermined as the EPA continues to consider congressionally requested investigations into the legality of the proposal and the merits of an anti-glider study that was published shortly after the proposal became official.has not been resolved. Additionally, implementation of the Phase 2 standardsStandards as they relate to trailers has been delayed due tochallenged in the US Court of Appeals for the District of Columbia. In November 2021, a provisional stay granted in October 2017 bypanel for the US Court of Appeals for the District of Columbia which is overseeing a case againstruled in favor of the EPA byassociation challenging the Truck Trailer Manufacturers Association, Inc. regardingstandards and vacated all portions of the Phase 2 standards. If the glider provisions are removed fromStandards that applied to trailers. As a result, the Phase 2 standards, there would be no direct effect on our results of operations. IfStandards will only require reductions in emissions and fuel consumption for tractors. The Company’s new tractor purchases in 2021 complied with the emission and fuel consumption reductions required by the Phase 2 Standards.
Even though the trailer provisions of the Phase 2 standards are permanentlyhave been removed, we wouldwill still need to ensure the majority of our fleet is compliant with the California Phase 2 standards.
In January 2020, the EPA announced it is seeking input on reducing emissions of nitrogen oxides and other pollutants from heavy-duty trucks. The EPA is aiming to release proposed standards foranticipates taking final action on the new plan, commonly referred to as the “Cleaner Trucks Initiative,” later in 2020, and may take final action as soon as 2021.2022. The EPA is targeting 2027 for these new standards to take effect.effect and is also working on enacting more stringent greenhouse gas emission standards (beginning with model year 2030 vehicles) by the end of 2024.
Complying with these and any future GHG regulations enacted by California’s ARB, the EPA, the NHTSA and/or any other state or federal governing body has increased and will likely continue to increase the cost of our new tractors, may increase the cost of new trailers, may require us to retrofit certain of our trailers, may increase our maintenance costs, and could impair equipment productivity and increase our operating costs, particularly if such costs are not offset by potential fuel savings. These adverse effects, combined with the uncertainty as to the reliability of the newly designed diesel engines and the residual values of our equipment, could materially increase our costs or otherwise adversely affect our business or operations. We cannot predict, however, the extent to which our operations and productivity will be impacted. We will continue monitoring our compliance with federal and state GHG regulations.
Climate-change Proposals
Federal and state lawmakers are considering a variety of other climate-change proposals related to carbon emissions and GHG emissions. The proposals could potentially limit carbon emissions within certain states and municipalities, which continue to restrict the location and amount of time that diesel-powered tractors (like ours) may idle.
These restrictions could force us to purchase on-board power units that do not require the engine to idle or to alter our driving associates' behavior, which could result in a decrease in productivity, or increase in driving associate turnover.

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Industry Regulation
Our operations are regulated and licensed by various federal, state, and local government agencies in North America, including the DOT, the FMCSA, and the US Department of Homeland Security, among others. Our company, as well as our driving associates and independent contractors, must comply with enacted governmental regulations regarding safety, equipment, and operating methods. Examples include regulation of equipment weight, equipment dimensions, driver hours-of-service, driver eligibility requirements, on-board reporting of operations, and ergonomics. The following discussion presents recently enacted federal, state, and local regulations that could have an impact on our operations.
Moving Ahead for Progress in the 21st Century Bill
In July 2012, Congress passed the Moving Ahead for Progress in the 21st Century bill into law. Included in the highway bill was a provision that mandates electronic logging devices in commercial motor vehicles to record hours-of-service. Additionally, in response to the bill, a final rule related to entry-level driver training was passed in 2016, as well as amendments to the Drug and Alcohol Clearinghouse rules.Clearinghouse.
ELD — During 2012, the FMCSA published a Supplemental NPRM, announcing its plan to proceed with the ELDs and hours-of-service supporting documents rulemaking. The ELD rule became finaleffective in December 2015, as published in the Federal Register, with an effective date of February 16, 2016. The ELD rule phases2016 and was phased in over a four-year period:
Phase 1 (February 16, 2016 through December 18, 2017): Carriers and drivers subject to the rule may voluntarily use ELDs or use other forms of logging devices.
Phase 2 (December 18, 2017 through December 16, 2019): Carriers and drivers subject to the rule can use Automatic On-board Recording Devices that were installed prior to December 18, 2017 or ELDs certified and registered after December 16, 2015.
Phase 3 (after December 16, 2019): Allperiod, with all drivers and carriers subject to the rule mustbeing required to use certified and registered ELDs that comply with the requirements of the ELD regulations.
Although the final ELD rule may have caused many carriers to experience at least a short-term drop in production and has had a significant impact on the industry as a whole, we have not experienced any adverse effects, as we had installed ELDs in our operational trucks well before theregulations by December 2017 compliance date in conjunction with our efforts to improve efficiency and communications with driving associates and independent contractors. However, we believe that more effective hours-of-service enforcement under the ELD rule may improve our competitive position by causing all carriers to adhere more closely to hours-of-service requirements.16, 2019.
Commercial Driver's License Drug and Alcohol Clearinghouse —In December 2016, the FMCSA amended the Federal Motor Carrier Safety Regulations to establish requirements of the Commercial Driver's License Drug and Alcohol Clearinghouse, a database under its administration that will containcontaining information about violations of the FMCSA's drug and alcohol testing program for holders of commercial driver's licenses. In addition to requiring employers to check the database for driver applicant drug and alcohol test failures, the final rule requires employers to check the database to determine whether current employees have incurred a drug or alcohol violation that would prohibit them from performing safety-sensitive functions. The final rule became effective onin January 4, 2017, with a compliance date ofin January 6, 2020. In December 2019, however, the FMCSA announced a final rule extending by three years the date for state driver’s licensing agencies to comply with certain Drug and Alcohol Clearinghouse requirements. The December 2016 commercial driver’s license rule required states to request information from the Clearinghouse about individuals prior to issuing, renewing, upgrading or transferring a commercial driver's license. This new action will allow states’ compliance with the requirement, which was set to begin January 2020, to be delayed until January 2023. That being said, the FMCSA has indicated it will allow states the option to voluntarily query Clearinghouse information beginning January 2020. The compliance date of January 2020 remained in place for all other requirements set forth in the Clearinghouse final rule, however. Upon implementation, the rule may reduce the number of available drivers in an already constrained driver market. Pursuant to a new rule finalized by the FMCSA, effective November 2021, states are required to query the Clearinghouse when issuing, renewing, transferring, or upgrading a commercial driver’s license and must revoke a driver’s commercial driving privileges if such driver is prohibited from driving a motor vehicle for one or more drug or alcohol violations.

In September 2020, the Department of Health and Human Services ("DHHS") announced proposed mandatory guidelines to allow employers to drug test truck drivers and other federal workers for pre-employment and random testing using hair specimens. However, the proposal also requires a second sample using either urine or an oral swab test if a hair test is positive, if a donor is unable to provide a sufficient amount of hair for faith-based or medical reasons, or due to an insufficient amount or length of hair. DHHS indicated the two-test approach is intended to protect federal workers from issues that have been identified as limitations of hair testing, and related legal deficiencies identified in prior court cases. The American Trucking Associations ("ATA") has voiced concerns with the new guidelines, taking particular issue with the second sample requirement, which the ATA feels diminishes the value of hair testing. It is unclear if and when a final rule may be put in place. Any final rule may reduce the number of available drivers. We currently perform hair follicle testing and will continue to monitor any developments in this area to ensure compliance.
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Entry-Level Driver Training — In December 2016, the FMCSA established new minimum training standards forwhich unified curriculum to be followed and completed by certain individuals applying for (or upgrading) a Class A or Class B commercial driver's license, or obtaining a hazardous materials, passenger, or school bus endorsement on their commercial driver's license for the first time.license. Such individuals are subject to the entry-level driver training requirements and must complete a prescribed programcurriculum of theory and behind-the-wheel instruction.instruction prior to taking the skills test. The final rule requires that behind-the-wheel proficiency of an entry-level truck driver be determined solely by the instructor's evaluation of how well the driver-trainee performs the fundamental vehicle controls skills and driving procedures set forth in the curricula, but does not have a minimum training hours requirement, as proposed by the FMCSA earlier in 2016. The final rule went into effect on February 6, 2017, withhad an initial compliance date ofin February 7, 2020. However, in May 2020, the FMCSA officials have recently reported, however, that they areapproved an interim rule delaying implementation of the final rule by two years. Uponyears, extending the compliance date to February 2022. Now that the rule is effective, training schools will beand other programs (including ours) are required to implement the prescribed curriculum and register with the FMCSA's Training Provider Registry andto certify that their program meets the classroom and driving standards. We will also be required to comply with this rule in the course of operating our driving schools. The effect of this rulethese rules could result in a decrease in fleet production and driver availability eitheror an increase in the time and expense required to operate or expand our driver training schools and programs (or both), any of which could adversely affect our business, operations or operations. US Congressional representativesprofitability.
The Infrastructure Investment and Jobs Act ("IIJA"), signed into law by President Biden in November 2021, also proposed a bill in 2019 that would pave the waycreated an apprenticeship program for commercial drivers younger than 21 to eventually qualify to drive tractors across state lines. This new bill, which would lowercommercial trucks in interstate commerce. The FMCSA announced the age requirementestablishment of 21this apprenticeship program in January 2022 in an effort to help the industry’s ongoing driver shortage. The program is open to 18 to 20-year-old drivers who already hold intrastate commercial driver’s licenses and sets a strict training regimen for interstate commercial driving if certain requirements are met, received supportparticipating drivers and carriers to comply with. Motor carriers interested in participating must complete an application for participation and submit monthly data on an apprentice’s driver activity, safety outcomes, and additional supporting information. It remains unclear whether any regulatory changes will stem from the ATA during a February 2020 Senate hearing. It is unclear how long the process of finalizing such a bill will take, however, if one comes to fruition at all.apprenticeship program.
Hours-of-service
From time to time, the FMCSA proposes and implements changes to regulations impacting hours-of-service. Such changes can negatively impact our productivity and affect our operations and profitability by reducing the number of hours per day or week our driving associates and independent contractors may operate and/or disrupting our network. No such changes are currently proposed. However, in August 2019, the FMCSA issued a proposal to make changes to its hours-of-service rules that would allow truck drivers more flexibility with their 30-minute rest break and with dividing their time in the sleeper berth. It also would extend by two hours the duty time for drivers encountering adverse weather and extend the shorthaul exemption by lengthening the drivers’ maximum on-duty period from 12 hours to 14 hours. It is unclear how longIn June 2020 the process of finalizingFMCSA adopted a final rule will take, if one does come to fruition.substantially as proposed, which became effective September 2020. Certain industry groups have challenged these rules in court, which remain unresolved. Any future changes to hours-of-service regulations could materially and adversely affect our operations and profitability.
Safety and Fitness Ratings
There are currently two methods of evaluating the safety and fitness of carriers: CSA, which evaluates and ranks fleets on certain safety-related standards by analyzing data from recent safety events and investigation results, and the DOT safety rating, which is based on an on-site investigation and affects a carrier's ability to operate in interstate commerce. Additionally, the FMCSA has proposed rules in the past that would change the methodologies used to determine carrier safety and fitness.
DOT Safety Rating — The DOT safety rating is currently the only safety measurement system that has a direct impact on a carrier's ability to operate in interstate commerce. Both Knight, Swift, and SwiftACT currently have a satisfactory DOT safety rating, which is the best available rating under the current safety rating scale. If we were to receive a conditional or unsatisfactory DOT safety rating, it could adversely affect our business, as some of our existing customer contracts require a satisfactory DOT safety rating.
CSA — In December 2010, the FMCSA introduced CSA, an enforcement and compliance model that ranks on seven categories of safety-related data. The seven categories of safety-related data, currently include Unsafe Driving, Hours-of-Service Compliance, Driver Fitness, Controlled Substances/Alcohol, Vehicle Maintenance, Hazardous Materials Compliance, and Crash Indicator, (such categories known as "BASICs"). Carriers are grouped by category with other carriers that have a similar number of safety events (i.e. crashes, inspections, or violations) and carriers are ranked and assigned a rating percentile or score to prioritize them for interventions if they are above a certain threshold.
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Certain CSA scores were initially published and made available to the general public. However, in December 2015, as part of the Fixing America's Surface Transportation ("FAST") Act, Congress mandated that the FMCSA remove all CSA scores from public view until a more comprehensive study regarding the effectiveness of CSA improving truck safety could be completed. During this period of review byAlthough the FMCSA we will continue to have access to our own scores and will still be subject to intervention by the FMCSA when such scores are above the intervention thresholds. The study was conducted and delivered to the FMCSA in June 2017 with several recommendations to make the CSA program more fair, accurate, and reliable. In late June 2018, the FMCSAhas since provided a report to Congress outlining the

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changes it may make to the CSA program, in response to the study. Such changes include the testing and possible adoption of a revised risk modeling theory, potential collection and dissemination of additional carrier data and revised measures for intervention thresholds. The adoption of such changes is contingent on the results of the new modeling theory and additional public feedback.
It isit remains unclear if, when, and to what extent any such changes will occur. However, any changes that increase the likelihood of us receiving unfavorable scores could adversely affect our results of operations and profitability.
In May 2020 the FMCSA announced that effective immediately it is making permanent a pilot program that will not count a crash in which a motor carrier was not at fault when calculating the carrier’s safety measurement profile, called the Crash Preventability Demonstration Program ("CPDP"). The CPDP will expand the types of eligible crashes, modify the Safety Measurement System to exclude crashes with not preventable determinations from the prioritization algorithm and note the not preventable determinations in the Pre-Employment Screening Program.
CSA scores do not currently have a direct impact on a carrier's safety rating.  However, the occurrence of unfavorable scores in one or more categories may affect driving associate recruiting and retention by causing qualified driving associates to seek employment with other carriers, cause our customers to direct their business away from us and to carriers with more favorable scores, subjecting us to an increase in compliance reviews and roadside inspections, or cause us to incur greater than expected expenses in our attempts to improve unfavorable scores, any of which could adversely affect our results of operations and profitability.
Safety Fitness Determination — In January 2016, the FMCSA published a Notice of Proposed Rulemaking ("NPRM") in the Federal Register, regarding carrier safety fitness determination. The NPRM proposed new methodologies that would have determined when a motor carrier was not fit to operate a commercial motor vehicle. Key proposed changes that were included in the NPRM are as follows:
There would be only one safety rating of "unfit," as compared to the current rules, which have three safety ratings (satisfactory, conditional, and unsatisfactory).
Carriers could be determined "unfit" by failing two or more BASICs, investigation results, or a combination of the two.
Stricter standards would be used for BASICs with a higher correlation to crash risk (Unsafe Driving and Hours-of-Service Compliance).
All investigation results would be used, not just results from comprehensive on-site reviews.
Violations of a revised list of "critical" and "acute" safety regulations would result in failing a BASIC.
Carriers would be assessed monthly.
Public comments on the proposed rule were due in June 2016 and several industry groups and lawmakers expressed their disagreement with the proposed rule, arguing that it violates the requirements of the FAST Act and that the FMCSA must first finalize its review of the CSA scoring system. Based on thispublic feedback and other concerns raised by industry stakeholders, in March 2017, the FMCSA withdrew the NPRM related to the new safety rating system. In its notice of withdrawal, the FMCSA noted that a new rulemaking related to a similar process may be initiated in the future. Therefore, it is uncertain if, when, or under what form any such rule could be implemented. The FMCSA has also recently indicated its intent to performthat it is in the early phases of a new study on the causation of crashes. Although it remains unclear whether such a study will ultimately be undertaken and completed, the results of such a study could spur further proposed and/or final rules in regards to safety and fitness.
Prohibiting Coercion of Commercial Motor Vehicle Drivers
In November 2015, the Prohibiting Coercion of Commercial Motor Vehicle Drivers rule became final. The rule explicitly prohibits motor carriers from coercing drivers to violate certain FMCSA regulations, including driver hours-of-service limits, Commercial Drivers' License regulations, drug and alcohol testing rules, and hazardous materials regulations, among others. Under the rule, drivers can report incidents of coercion to the FMCSA, who is authorized to issue penalties against the motor carrier. We have not experienced any significant impacts from this rule.
Speed Limiting Devices
In September 2016,May 2021, the NHTSACullum Owings Large Truck Safe Operating Speed Act was reintroduced into the US House of Representatives and FMCSA proposed regulations that would require speed limiting devices oncommercial motor vehicles with a gross vehicle weight rating of more than 26,000 pounds for the service life of the vehicle. The speed was expected to be limited to 62, 65, or 68, but ultimately would have been set by the final rule. Based on the agencies' review of the available data, limiting the speed of these heavy vehicles would reduce the severity of crashes involving these vehicles and reduce the resulting injuries and fatalities. Public comments on the proposed rule were due in November 2016, and in July 2017, the DOT announced that it would no longer pursue a speed limiter rule, but left open the possibility that it could resume such a pursuit in the future. The effect of this rule, to the extent it became effective, could result in a decrease in fleet production and driver availability, either of which could adversely affect our business or operations.

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In June 2019, legislation was introduced that would require all new commercial trucks with a gross weight of 26,001 pounds or more to be equipped with speed-limiting devices, which must be seta speed limiter that would limit the vehicle's speed to a maximum speed ofno more than 65 miles per hour and be used at all times while in operation. The maximum speed requirement would also be extended to existing trucks that already have the technology installed. Trucks without speed limiters would not be forced to retroactively install the technology.hour. Whether this legislation will ultimately become law is uncertain. While we currently govern the speed of our company tractors below these limits, such legislation could result in a decrease in fleet production and driver availability, either of which could adversely affect our business or operations.
For safety, we electronically govern the speed of substantially all of our company tractors. Additionally, our independent contractor agreements include statements that independent contractors must comply with the Company's speed policy.
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Food Safety Modernization Act of 2011 ("FSMA")
In April 2016, the Food and Drug Administration ("FDA") published a final rule establishing requirements for shippers, loaders, carriers by motor vehicle and rail vehicle, and receivers engaged in the transportation of food, to use sanitary transportation practices to ensure the safety of the food they transport as part of the FSMA. This rule sets forth requirements related to:
the design and maintenance ofto among other things, equipment used to transport food,
the measures taken during foodsuch transportation, to ensure food safety,
thepersonnel training, of carrier personnel in sanitary food transportation practices, and
maintenance and retention of records of written procedures, agreements, and training related to the foregoing items. 
record retention. These requirements took effect for larger carriers such as us in April 2017 and are also applicable when we perform as a carrier or as a broker. We believe we have been in compliance with these requirementrequirements since that time. However, if we are found to be in violation of applicable laws or regulations related to the FSMA, or if we transport food or goods that are contaminated or are found to cause illness and/or death, we could be subject to substantial fines, lawsuits, penalties and/or criminal and civil liability, any of which could have a material adverse effect on our business, financial condition, and results of operations.
As the FDA continues its efforts to modernize food safety, it is likely additional food safety regulations will take effect in the future. In July 2020, the FDA released its "New Era of Smarter Food Safety" blueprint, which creates a ten year roadmap to create a more digital, traceable and safer food system. This blueprint builds on the work done under the FSMA, and while it is still unclear what, if any, changes to the current governing framework may ultimately take effect, further regulation in this area could negatively affect our business by increasing our compliance obligations and related expenses going forward.
Legislation Regarding Independent Contractors
Tax and other regulatory authorities have sought in the past to assert that independent contractors in the trucking industry are employees rather than independent contractors.  Federal legislators continue to introduce legislation concerning the classification of independent contractors as employees, including legislation that proposes to increase the tax and labor penalties against employers who intentionally or unintentionally misclassify employees as independent contractors and are also found to have violated employees' overtime or wage requirements. Most recently, the Protecting the Rights to Organize ("PRO") Act was passed by the US House of Representatives and received by the US Senate in March 2021, and remains with the Senate’s Committee on Health, Education, Labor, and Pensions. The PRO Act proposes to apply the "ABC Test" for classifying workers under Federal Fair Labor Standards Act claims. It is unknown whether the proposed legislation will become law as currently written or whether any resulting law will include industry-based exemptions. Additionally, federal legislators have sought to:
abolish the current safe harbor allowing taxpayers meeting certain criteria to treat individuals as independent contractors if they are following a long-standing, recognized practice,
extend the FLSA to independent contractors, and
impose notice requirements based upon employment or independent contractor status and fines for failure to comply. 
Some states have adopted initiatives to increase their revenues from items such as unemployment, workers' compensation, and income taxes, and we believe a reclassification of independent contractors as employees would help states with this initiative.  Federal and state taxing and other regulatory authorities and courts apply a variety of standards in their determination of independent contractor status.
Recently, courts in certain states have issued decisions that could result in a greater likelihood that independent contractors would be judicially classified as employees in such states. Further, class actions and other lawsuits have been filed against us and other members of our industry seeking to reclassify independent contractors as employees for a variety of purposes, including workers' compensation and health care coverage. Our defense of such class actions and other lawsuits has not always been successful, and we have been subject to adverse judgments with respect to such matters. In addition, carriers such as us that operate or have operated lease-purchase programs have been more susceptible to lawsuits seeking to reclassify independent contractors that have engaged in such programs.  If our independent contractors were determined to be our employees, we would incur additional exposure under federal and

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state tax, workers' compensation, unemployment benefits, labor, employment, and tort laws, which could potentially include prior periods, as well as potential liability for employee benefits and tax withholdings.  We currently observe and monitor our compliance with current related and applicable laws and regulations, but we cannot predict whether future laws and regulations, judicial decisions, or settlements regarding the classification of independent contractors will adversely affect our business or operations.
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In September 2019, California enacted A.B. 5 ("AB5"), a new law that changed the landscape of the state’s treatment of employees and independent contractors. AB5 provides that the three-pronged "ABC Test" must be used to determine worker classification in wage-order claims. Under the ABC Test, a worker is presumed to be an employee and the burden to demonstrate their independent contractor status is on the hiring company through satisfying all 3three of the following criteria:
the worker is free from control and direction in the performance of services;
the worker is performing work outside the usual course of the business of the hiring company;
the worker is customarily engaged in an independently established trade, occupation, or business.
How AB5 will be enforced is still to be determined. In January 2021, the California Supreme Court ruled that the ABC Test could apply retroactively to all cases not yet final as of the date the original decision was rendered, April 30, 2018. While it was set to go into effect in January 2020, a federal judge in California issued a preliminary injunction barring the enforcement of AB5 on the trucking industry while the California Trucking Association ("CTA") moves forward with its suit seeking to invalidate AB5. The Ninth Circuit Court of Appeals rejected the reasoning behind the injunction in April 2021, ruling that AB5 is not pre-empted by federal law, but granted a stay of the AB5 mandate in June 2021, preventing its application and temporarily continuing the injunction, while the CTA petitioned the US Supreme Court to review the decision. In November 2021, the US Supreme Court requested that the US solicitor general weigh in on the case. The injunction will remain in place until the US Supreme Court makes a decision on whether to hear the case. While this preliminary injunctionthe stay of the AB5 mandate provides temporary relief to the enforcement of AB5, it remains unclear how long such relief will last, and whether the CTA will ultimately be successful in invalidating the law. It is also possible AB5 will spur similar legislation in states other than California, which could adversely affect our results of operations and profitability.
State Wage and Hour Legislation
In March 2014, the Ninth Circuit Court of Appeals held that California state wage and hour laws are not preempted by federal law. The case was appealed to the Supreme Court of the United States, which denied certiorari in May 2015, and accordingly, the Ninth Circuit Court of Appeals decision stood. However, in December 2018, the FMCSA granted a petition filed by the American Trucking Associations and in doing so determined that federal law does preempt California’s wage and hour laws, and interstate truck drivers are not subject to such laws. The FMCSA’s decision has been appealed by labor groups and multiple lawsuits have been filed in federal courts seeking to overturn the decision,decision. In January 2021, the Ninth Circuit Court of Appeals upheld the FMCSA’s determination that federal law does preempt California's meal and thus it’s uncertain whether it will stand.rest break laws, as applied to drivers of property-carrying commercial motor vehicles. Other current and future state and local wage and hour laws, including laws related to employee meal breaks and rest periods, may also vary significantly from federal law. Further, driver piece rate compensation, which is an industry standard, has been attacked as non-compliant with state minimum wage laws. Both of these issues are adversely impacting the Company and the industry as a whole, with respect to the practical application of the laws, thereby resulting in additional cost. As a result, we are subject to an uneven patchwork of wage and hour laws throughout the US. In the past, certain legislators have proposedIf federal legislation to preemptis not passed preempting state and local wage and hour laws; however, passage of such legislation is uncertain. If federal legislation is not passed,laws, we will either need to comply with the most restrictive state and local laws across our entire fleet, or revise our management systems to comply with varying state and local laws. Either solution could result in increased compliance and labor costs, increased driver turnover, decreased efficiency, and amplified legal exposure.
Other Regulation
Executive Order
President Biden has indicated his intent to make a green infrastructure package a top priority for his administration. Any measure in furtherance thereof could draw from the Build Back Better Act (the "BBB"), which passed the US House of Representatives, but is facing resistance in the US Senate. As currently proposed, the BBB would impact transportation by allocating funds to address various industry related issues such as port congestion and traffic safety enforcement. The regulatory environmentBBB also promotes several low-emission programs, transit services and clean energy projects, as well as funding for climate change research. It is unclear whether these legislative initiatives will be signed into law and what changes they may undergo. However, adoption and implementation could negatively impact our business by increasing our compliance obligations and related expenses. President Biden also has changed under the administration of President Trump.  In January 2017, the President signedindicated an executive order requiring federal agenciesintention to repeal two regulations for each new one they propose and imposing a regulatory budget, which would limit the amount of new regulatory costs federal agencies can impose on individuals and businesses each year.  In December 2019, the DOT announced a final rule indicating it is codifying this directive on the regulatory process. This rule and any other anti-regulatory action by the President and/or Congress, may inhibit future new regulations and/or leadmake substantial changes to the repeal or delayed effectiveness of existing regulations. Therefore, it is uncertain how wecurrent US tax laws during his administration, including changes to the way capital gains are treated. Any changes to US tax laws may be impacted in the future by existing, proposed, or repealed regulations.

have an adverse impact on our business and profitability.
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The Tax CutsInfrastructure Investment and Jobs Act ("IIJA")
On December 22, 2017,The IIJA was signed into law by President Biden in November 2021. The roughly $1.2 trillion bill contains an estimated $550 billion in new spending, which will impact transportation. In particular, it dedicates more than $100 billion for surface transportation networks and roughly $66 billion for freight and passenger rail operations. Among provisions in the US enacted significant changeslaw specific to its tax law followingtrucking is the passageaforementioned apprenticeship program for drivers younger than 21. It remains unclear how the IIJA will be implemented into and signing of H.R.1, "An Act to Provide for Reconciliation Pursuant to Titles IIaffect our industry. The IIJA may result in increased compliance and V of the Concurrent Resolutionimplementation related expenses, which could have a negative impact on the Budget for Fiscal Year 2018" (previously known as "The Tax Cuts and Jobs Act"). The new tax law is complex and includes various changes which may impact the Company.our operations.
US-Mexico-Canada Agreement
The US-Mexico-Canada Agreement ("USMCA") has been ratified by the US and Mexico, but must be ratified by the Parliament of Canada before it enterswas entered into effect.effect in July 2020. The USMCA is designed to modernize food and agriculture trade, advance rules of origin for automobiles and trucks, and enhance intellectual property protections, among other matters, according to the Office of the US Trade Representative. It is difficult to predict at this stage what could be the impact of the USMCA on the economy, including the transportation industry. However, given the amount of North American trade that moves by truck, if the USMCA enters into effect, it could have a significant impact on supply and demand in the transportation industry, and could adversely impact the amount, movement, and patterns of freight we transport.
FAST ActRegulatory Impacts from COVID-19
WithGiven COVID-19’s considerable effect on the FAST Act scheduledtransportation industry, the FMCSA issued and extended various temporary responsive measures. Although, to expiredate, these measures have largely been enacted in September 2020, Congress has noted its intentorder to consider a multiyear highway measure that would update the FAST Act. However, if Congress fails to reauthorize the FAST Act or pass updated replacement legislation by the September 2020 deadlineassist industry participants in operating under adverse circumstances, any further responsive measures remain unclear and proceeds to manage transportation policy via short-term legislative directives, there will be uncertainty that could have a negative impact on our operations.
In November 2021 the US Department of Labor’s Occupational Safety and Health Administration ("OSHA") published an emergency temporary standard (the "Emergency Rule") requiring all employers with at least 100 employees to ensure that their employees are fully vaccinated or require any employees who remain unvaccinated to produce a negative COVID-19 test result on at least a weekly basis before coming to work. The Emergency Rule has been blocked by the US Supreme Court. Effective January 2022, the US is prohibiting unvaccinated foreign citizens from crossing the US-Mexico border and US-Canada border. Furthermore, effective January 2022, Canada is prohibiting unvaccinated foreign citizens, including US citizens, from crossing their border. These border requirements, as well as any future vaccination, testing or mask mandates that are allowed to go into effect, could, among other things, (i) cause our unvaccinated employees (particularly our unvaccinated driving associates) to go to smaller employers, if such employers are not subject to future mandates, or leave the trucking industry, (ii) result in logistical issues, increased expenses, and operational issues from arranging for weekly tests of our unvaccinated employees, especially our unvaccinated driving associates, (iii) result in increased costs for recruiting and retention of driving associates, including the cost of weekly testing, and (iv) result in decreased revenue if we are unable to recruit and retain driving associates. Any vaccination, testing or mask mandates that are interpreted as applying to driving associates would significantly reduce the pool of driving associates available to us and our industry, which would further impact the extreme shortage of available driving associates. Accordingly, any vaccination, testing or mask mandates, if allowed to go into effect, could have a material adverse effect on our business, financial condition, and results of operations.
Available Information
General information about the Company is provided, free of charge, regarding Knight at www.knighttrans.com and regarding Swift at www.swifttrans.com. These websites also include links to the combined company'sKnight-Swift's investor site, http://investor.knight-swift.com, which includes our annual reports on Form 10-K with accompanying XBRL documents, quarterly reports on Form 10-Q with accompanying XBRL documents, current reports on Form 8-K with accompanying XBRL documents, and amendments to those reports that are filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as soon as reasonably practicable once the material is electronically filed or furnished to the SEC. The SEC maintains an internet site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC at www.sec.gov.

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ITEM 1A.RISK FACTORS
When evaluating our company, the following risks should be considered in conjunction with the other information contained in this Annual Report. If we are unable to mitigate and/or are exposed to any of the following risks in the future, then there could be a material, adverse effect on our business, results of operations, or financial condition.
Our risks are grouped into the following risk categories:
StrategicOperationalComplianceFinancial
*Industry and Competition*Company Growth*Trucking Industry Regulation*Capital Requirements
*Market Changes*Employees*Environmental Regulation*Debt
*Macroeconomic Changes*Independent Contractors*Insurance Regulation*Investments
*Mergers and Acquisitions*Vendors and Suppliers*ESG*Goodwill and Intangibles
*International Operations*Customers*Common Stock
*Information Systems
*DividendsCOVID-19
Strategic Risk
Our business is subject to general economic, credit, business, and regulatory factors affecting the truckload industry that are largely beyond our control, any of which could have a materially adverse effect on our results of operations.
The full truckload, industry isLTL, intermodal, and brokerage industries are highly cyclical, and our business is dependent on a number of factors that may have a materially adverse effect on our results of operations, many of which are beyond our control. We believe that some of the most significant of these factors include (1) excess tractor and trailer capacity in the trucking industry in comparison with shipping demand; (2) declines in the resale value of used equipment; (3) recruiting and retaining qualified driving associates; (4) strikes, work stoppages, or work slowdowns at our facilities or at customer, port, border crossing, or other shipping-related facilities; (5) increases in interest rates, fuel, taxes, tariffs, tolls, and license and registration fees; (6) industry compliance with ongoing regulatory requirements; and (7) rising costs of healthcare.
We are also affected by (1) recessionary economic cycles, such as the period from 2007 through 2009 and the 2016 and 2019 freight environments, which were characterized by weak demand and downward pressure on rates; (2) changes in customers' inventory levels and practices, including shrinking product/package sizes, and in the availability of funding for their working capital; (3) changes in the way our customers choose to source or utilize our services; and (4) downturns in our customers' business cycles. Economic conditions may adversely affect our customers and their demand for and ability to pay for our services. Customers encountering adverse economic conditions represent a greater potential for loss and we may be required to increase our allowance for doubtful accounts.
Economic conditions that decrease shipping demand or increase the supply of available tractors and trailers can exert downward pressure on rates and equipment utilization, thereby decreasing asset productivity. The risks associated with these factors are heightened when the US economy is weakened, such as the period from 2007 through 2009. Some of the principal risks duringweakened. During such times, which risks Knight and Swift have experienced during prior recessionary periods, are as follows:
we may experience a reduction in overall freight levels which may impair our asset utilization;
and freight patterns may change as supply chains are redesigned, resulting in an imbalance between our capacity and our customers'customers’ freight demand;
customers may experience credit issues and cash flow problems, resulting in an inability to compensate us for rendered services;
customers may solicit bids for freight from multiple trucking companies or select competitors that offer lower rates in an attempt to lower their costs, and we might be forced to lower our rates or lose freight;
we may be forced to accept more freight from freight brokers, where freight rates are typically lower;
we may need to incur significantly more non-paid empty miles and other non-revenue miles to obtain loads; and
lack of access to current sources of credit or lack of lender access to capital, leading to an inability to secure credit financing on satisfactory terms, or at all.demands.
We are also subject to potential increases in various costs and other events that are outside of our control that could materially reduce our profitability if we are unable to increase our rates sufficiently.  Such cost increases include, but

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are not limited to, fuel and energy prices, driving associate and non-driver employee wages, purchased transportation costs, taxes and interest rates, tolls, license and registration fees, insurance premiums and claims, revenue equipment and related maintenance costs, tires and other components, and healthcare and other benefits for our employees.  We could be affected by strikes or other work stoppages at our terminals, or at customer, port, border, or other shipping locations. Further, we may not be able to appropriately adjust our costs and staffing levels to changing market demands. In periods of rapid change, it is more difficult to match our staffing level to our business needs.
Changing impacts of regulatory measures could impair our operating efficiency and productivity, decrease our operating revenues and profitability, and result in higher operating costs. From time-to-time, various US federal, state, or local taxes are also increased, including taxes on fuels. We cannot predict whether, or in what form, any such increase applicable to us will be enacted, but such an increase could adversely affect our results of operations and profitability.
In addition, we cannot predict future economic conditions, fuel price fluctuations, cost increases, revenue equipment resale values, or how consumer confidence, macroeconomic conditions, or production capabilities, could be affected by actual or threatened outbreaks of disease or other public health risks, armed conflicts or terrorist attacks, government efforts to combat terrorism, military action against a foreign state or group located in a foreign state, or heightened security requirements. Enhanced security measures in connection with such events could impair our operating efficiency and productivity and result in higher operating costs.
We operate in a highly competitive and fragmented industry, and numerous competitive factors could limit growth opportunities and could have a materially adverse effect on our results of operations.
We operate in a highly competitive industry, which includes thousands of trucking and logistics companies. In our truckload operations, we primarily compete with other capacity providers that provide dry van, temperature-controlled, and drayage services similar to those we provide. Less-than-truckload carriers, private carriers, intermodal companies, railroads, logistics, brokerage, and freight forwarding companies compete to a lesser extent with our truckload operations but are direct competitors of our brokerage, intermodal, and logistics operations. We transport or arrange for the transportation of various types of freight, and competition for such freight is based mainly on customer service, efficiency, available capacity and shipment modes, and rates that can be obtained from customers. Such competition in the transportation industryindustry. The following factors could adversely affect our freight volumes, the freight rates we charge our customers, or profitability and thereby limit our business opportunities. Additional factors maygrowth opportunities and have a materially adverse effect on our results of operations. These factors include the following:operations:
many of our competitors periodically reduce their freight rates to gain business, especially during times of reduced growth rates in the economy, which may limit our ability to maintain or increase freight rates or maintain or grow profitability of our business;
many customers periodically accept bids from multiple carriers for their shipping needs, and this process may depress freight rates or result in the loss of some of our businesscustomers operate their own private trucking fleets and they may decide to competitors;transport more of their own freight;
many customers reduce the number of carriers they use by selecting "core carriers" as approved service providers or by engaging dedicated providers, and in some instances we may not be selected;
some of our customers operate their own private trucking fleets and they may decide to transport more of their own freight;
we may increase the size of our fleet during periods of high freight demand during which our competitors also increase their capacity, and we may experience losses in greater amounts than such competitors during subsequent cycles of softened freight demand if we are required to dispose of assets at a loss to match reduced customer demand;
the market for qualified drivers is increasingly competitive, and our inability to attract and retain driving associates could reduce our equipment utilization or cause us to increase driving associate compensation, both of which would adversely affect our profitability;
competition from non-asset-based and other logistics and freight brokerage companies may adversely affect our customer relationships and freight rates;
the continuing trend toward consolidation in the trucking industry may result in more large carriers with greater financial resources and other competitive advantages, with which we may have difficulty competing;
economies of scale that procurement aggregation providers may pass on to smaller carriers may improve their ability to compete with us;

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advances in technology may require us to increase investments in order to remain competitive, and our customers may not be willing to accept higher freight rates to cover the cost of these investments; and
the Knight and Swiftour brand names are valuable assets that are subject to the risk of adverse publicity (whether or not justified), which could result in the loss of value attributable to our brand and reduced demand for our services; andservices.
higher fuel prices and, in turn, higher fuel surcharges to our customers may cause some
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Increased prices for new revenue equipment, design changes of new engines, decreased availability of new revenue equipment, future use of autonomous trucks, and the failure of manufacturers to meet their sale or trade-back obligations to us could have a materially adverse effect on our business, financial condition, results of operations, and profitability.
We are subject to risk with respect to higher prices for new equipment for our full truckload and LTL operations. We have experienced an increase in prices for new tractors over the past few years, a significant increase in costs in recent quarters, and the resale value of the tractors has not increased to the same extent.  Prices have increased and may continue to increase, due to, among other reasons, (1) increases in commodity prices; (2) government regulations applicable to newly manufactured tractors, trailers, and diesel engines; and (3) the pricing discretion of equipment manufacturers. In addition, the engines installed in our newer tractors are subject to emissions control regulations issued by the EPA and certain states. Increased regulation has increased the cost of our new tractors and could impair equipment productivity, in some cases, resulting in lower fuel mileage, and increasing our operating expenses. Further regulations with stricter emissions and efficiency requirements have been proposed that would further increase our costs and impair equipment productivity. These adverse effects, combined with the uncertainty as to the reliabilityFuture use of the vehicles equipped with the newly designed diesel engines and the residual values realized from the disposition of these vehicles,autonomous tractors could increase our costs or otherwise adversely affect our business or operations as the regulations become effective. Over the past several years, some manufacturers have significantly increased new equipment prices, in part to meet new engine design and operations requirements. Our business could be harmed if we are unable to continue to obtain an adequate supplyprice of new tractors and trailers for these or other reasons. As a result, wedecrease the value of used, non-autonomous tractors. We expect to continue to pay increased prices for equipment and incur additional expenses for the foreseeable future.
Furthermore, reduced equipment efficiency may result from new engines designed to reduce emissions, thereby increasing our operating expenses.
Tractor and trailer vendors may reduce their manufacturing output in response to lower demand for their products in economic downturns or shortages of component parts. Aa decrease in vendor output may have a materially adverse effect on our ability to purchase a quantity of new revenue equipment that is sufficient to sustain our desired growth rate and to maintain a late-model fleet. Moreover, an inability
Tractor and trailer vendors may reduce their manufacturing output in response to obtain an adequatelower demand for their products in economic downturns or shortages of component parts. Currently, tractor and trailer manufacturers are experiencing significant shortages of semiconductor chips and other component parts and supplies, including steel, forcing many manufacturers to curtail or suspend their production, which has led to a lower supply of new tractors orand trailers, higher prices, and lengthened trade cycles, which could have a materiallymaterial adverse effect on our business, financial condition, and results of operations.operations, particularly our maintenance expense and driver retention.
We have certain revenue equipment leases and financing arrangements with balloon payments at the end of the lease term equal to the residual value we are contracted to receive from certain equipment manufacturers upon sale or trade back to the manufacturers. If we do not purchase new equipment that triggers the trade-back obligation, or the equipment manufacturers do not pay the contracted value at the end of the lease term, we could be exposed to losses equal to the excess of the balloon payment owed to the lease or finance company over the proceeds from selling the equipment on the open market.
We have trade-in and repurchase commitments that specify, among other things, what our primary equipment vendors will pay us for disposal of a substantial portion of our revenue equipment. The prices we expect to receive under these arrangements may be higher than the prices we would receive in the open market. We may suffer a financial loss upon disposition of our equipment if these vendors refuse or are unable to meet their financial obligations under these agreements, we do not enter into definitive agreements that reflect favorable equipment replacement or trade-in terms, we fail to or are unable to enter into similar arrangements in the future, or we do not purchase the number of new replacement units from the vendors required for such trade-ins.
Used equipment prices are subject to substantial fluctuations based on freight demand, supply of used trucks, availability of financing, presence of buyers for export, and commodity prices for scrap metal. These and any impacts of a depressed market for used equipment could require us to dispose of our revenue equipment below the carrying value. This leads to losses on disposal or impairments of revenue equipment, when not otherwise protected by residual value arrangements. Deteriorations of resale prices or trades at depressed values could cause more losses on disposal or impairment charges in future periods.

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agreements.
Declines in demand for our used revenue equipment could result in decreased equipment sales, resale values, and gains on sales of assets.
We are sensitive to the used equipment market and fluctuations in prices and demand for tractors and trailers. Through certain subsidiaries, we sell our used company-owned tractors and trailers that we do not trade in to manufacturers. The market for used equipment is affected by several factors, including the demand for freight, the supply of new and used equipment, the availability of financing, the presence of buyers for export to foreign countries, and commodity prices for scrap metal. Declines in demand for the used equipment we sell could result in diminished sales volumes or lower used equipment sales prices, either of which could negatively affect our gains on sales of assets.
If fuel prices increase significantly, our results of operations could be adversely affected.
Our full truckload and LTL operations are dependent upon diesel fuel, and accordingly, significant increases in diesel fuel costs could materially and adversely affect our results of operations and financial condition if we are unable to pass increased costs on to customers through rate increases or fuel surcharges. Prices and availability of petroleum products are subject to political, economic, geographic, weather-related, and market factors that are generally outside of our control and each of which may lead to fluctuations in the cost of fuel. Fuel prices are also affected by the rising demand for fuel in developing countries, and could be materially adversely affected by the use of crude oil and oil reserves for purposes other than fuel production and by diminished drilling activity. Such events may lead not only to increases in fuel prices, but also to fuel shortages and disruptions in the fuel supply chain.
We use a number of strategies to mitigate fuel expense, which is one of our largest operating expenses.  We purchase bulk fuel at many of our terminals and utilize a fuel optimizer to identify the most cost effective fuel centers to purchase fuel over-the-road.  We manage our fuel miles per gallon with a focus on reducing idle time, managing out-of-route miles, and improving the driving habits of our driving associates.  We also continue to update our fleet with more fuel efficient, EPA emission-compliant post-2014 model engines, and to install aerodynamic devices on our tractors and trailers, which lead to fuel efficiency improvements. Fuel is also subject to regional pricing differences and often costs more on the West Coast and in the Northeast, where we have significant operations. WeWhile we use a fuel surcharge program to recapture a portion but not all, of the increases in fuel prices over a base rate negotiated with our customers. Our fuel surcharge programit does not protect us against the full effect of increases in fuel prices. The terms of each customer's fuel surcharge agreement varies and customers may seek to modify the terms of their fuel surcharge agreements to minimize recoverability for fuel price increases. In addition, becauseBecause our fuel surcharge recovery lags behind changes in fuel prices, our fuel surcharge recovery may not capture the increased costs we pay for fuel, especially when prices are rising. This could lead to fluctuations in our levels of reimbursement, which have occurred in the past. During periods of low freight volumes, shippers can use their negotiating leverage to impose fuel surcharge policies that provide a lower reimbursement of our fuel costs. There is no assurance that such fuel surcharges can be maintained indefinitely or will be sufficiently effective. Our results of operations would be negatively affected and more volatile to the extent we cannot recover higher fuel costs or fail to improve our fuel price protection through our fuel
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surcharge program. Increases in fuel prices, orAdditionally, a shortage or rationing of diesel fuel, could also materially and adversely affect our results of operations.
We have not historically used derivatives to mitigate volatility in our fuel costs, but we periodically evaluate the benefits of employing this strategy. As of December 31, 2019, we did not have any derivative financial instruments to reduce our exposure to fuel price fluctuations. To mitigate the impact of rising fuel costs, we contract with some of our fuel suppliers to buy fuel at a fixed price or within banded pricing for a specified period, usually not exceeding twelve months. However, this only covers a small portion of our fuel consumption. Accordingly, fuel price fluctuations may still negatively impact us.
We are subject to certain risks arising from doing business in Mexico.
We have growing operations in Mexico, through our wholly-owned subsidiary, Trans-Mex, which subjects us to general international business risks, including:
foreign currency fluctuation;
changes in Mexico's economic strength;
difficulties in enforcing contractual obligations and intellectual property rights;
burdens of complying with a wide variety of international and US export, import, business procurement, transparency, and corruption laws, including the US Foreign Corrupt Practices Act;
changes in trade agreements and US-Mexico relations;

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theft or vandalism of our revenue equipment; and
social, political, and economic instability.
In addition, if we are unable to maintain our Free and Secure Trade ("FAST"), Business Alliance for Secure Commerce ("BASC"), and C-TPAT status, we may have significant border delays. This could cause our Mexican operations to be less efficient than those of competing capacity providers that have FAST, BASC, and C-TPAT status and operate in Mexico. We also face additional risks associated with our foreign operations, including restrictive trade policies and duties, taxes, or government royalties imposed by the Mexican government, to the extent not preempted by the terms of the North American Free Trade Agreement ("NAFTA"), or its proposed replacement, the USMCA, which is waiting for congressional approval. In addition, changes to NAFTA, USMCA (if enacted), or other treaties governing our business could materially adversely affect our international business. It is also uncertain how the USMCA, if enacted, will impact foreign trade and our Mexican operations.
We may not make acquisitions in the future, or if we do, we may not be successful in our acquisition strategy.
Historically, acquisitions werehave been a part of Knight's and Swift'sour growth strategies.strategy. There is no assurance that we will be successful in identifying, negotiating, or consummating any future acquisitions. If we do not make any future acquisitions, our growth rate could be materially and adversely affected. Any future acquisitions we undertake could involve issuing dilutive equity securities or incurring indebtedness. In addition, acquisitions involve numerous risks, any of which could have a materially adverse effect on our business and results of operations, including:
the acquired company may not achieve anticipated revenue, earnings, or cash flow;
we may assume liabilities beyond our estimates or what was disclosed to us;
we may be unable to successfully assimilate or integrate the acquired company's operations or assets into our business successfully and realize the anticipated economic, operational, and other benefits in a timely manner, which could result in substantial costs and delays or other operational, technical, or financial problems;
transaction costs and acquisition-related integration costs could adversely affect our results of operations in the period in which such costs are recorded;
diverting our management's attention from other business concerns;
risks of entering into new markets or business offerings in which we have had no or only limited directprior experience; and
the potential loss of customers, key employees, or driving associates of the acquired company.
We may fail to realize all of the anticipated benefits of the 2017 Merger or those benefits may take longer to realize than expected. We may also encounter significant difficulties in integrating Knight's and Swift's businesses.
Our abilityacquisition of ACT presents certain additional risks to realizeour business and operations.
On July 5, 2021, we acquired ACT, a leading LTL carrier that also offers dedicated contract carriage and ancillary services. The acquisition presents certain additional risks to our business and operations, including, among other things:
prior to the anticipated benefitsacquisition of ACT, our management team had limited experience with LTL operations and therefore may be challenged in managing the 2017 Merger will depend, to a large extent, on our ability to operate the Knight and Swift businesses together in a manner that realizes anticipated synergies. In order to achieve these expected benefits, we must successfully operate the businesses of Knight and Swift without adversely affecting current revenues and investments in future growth. If we are unable to successfully achieve these objectives, the anticipated benefits of the 2017 Merger may not be realized fully or at all or may take longer to realize than expected.
In addition, the continued operation of two independent businesses within one company is a complex, costly, and time-consuming process. As a result, we will be required to devote significant management attention and resources to coordinating their business practices and operations. This process may disrupt the businesses. The failure to meet the challenges involved in operating the two businesses within one company and to realize the anticipated benefits of the 2017 Merger could cause an interruption of, orLTL operations, particularly if there were a loss of momentum in, our activitiesthe ACT management team;
LTL operations are more capital intensive than full truckload operations, including the need for additional terminals and could adversely affect our resultstypes of operations. The integrationequipment;
LTL operations require more human capital than full truckload operations, including the need for dock employees and maintenance technicians, both of Knight'swhich are difficult to recruit and Swift's businesses may also result in material unanticipated problems, expenses, liabilities, competitive responses, and loss of customer and otherretain given the tight labor market;
potential adverse reactions or changes to business relationships or other adverse reactions. The difficulties of combiningresulting from the operationscompletion of the companies include, among others:acquisition, including potential breakdown of alliances between ACT and its capacity providers that are needed to meet customer requirements; and
difficulties in integrating functions, personnel, and systems;increased workers' compensation incidence rates generally associated with LTL operations.
challenges in conforming standards, controls, procedures, and accounting and other policies, business cultures, and compensation structures between the two companies;
difficulties in assimilating driving associates and employees and in attracting and retaining key personnel;
challenges in retaining existing customers and obtaining new customers;

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difficulties in achieving anticipated cost savings, synergies, business opportunities, and growth prospects from the combination;
difficulties in managing multiple brands under a significantly larger and more complex company;
contingent liabilities that are larger than expected; and
potential unknown liabilities, adverse consequences, and unforeseen increased expenses associated with the 2017 Merger.
Many of these factors are outside of our control and any one of them could result in increased costs, decreased expected revenues and the diversion of management's time and energy, which could materially impact our business, financial condition, and results of operations. In addition, even if the businesses of Knight and Swift are operated successfully within one company, the full benefits of the transaction may not be realized, including the synergies that are expected. These benefits may not be achieved within the anticipated time frame, or at all. Further, additional unanticipated costs may be incurred in operating the businesses of Knight and Swift. All of these factors could cause dilution to our earnings per share, decrease or delay the expected accretive effect of the 2017 Merger and negatively impact the market price of our common stock. As a result, it cannot be assured that the combination of Knight and Swift will result in the realization of the full benefits anticipated from the 2017 Merger within the anticipated time frames, or at all.
Operational Risk
We may not grow substantially in the future and we may not be successful in sustaining or improving our profitability.
There is no assurance that in the future, our business will grow substantially or without volatility, nor can we assure you that we will be able to effectively adapt our management, administrative, and operational systems to respond to any future growth. Furthermore, there is no assurance that our operating margins will not be adversely affected by future changes in and expansion of our business or by changes in economic conditions or that we will be able to sustain or improve our profitability in the future.
We have terminals throughout the US that serve markets in various regions. These operations require the commitment of additional personnel and revenue equipment, as well as management resources, for future development. Should the growth in our operations stagnate or decline, our results of operations could be adversely affected.  If we expand, it may become more difficult to identify large cities that can support a terminal, and we may expand into smaller cities where there is insufficient economic activity, fewer opportunities for growth, and fewer driving and non-driving associates to support the terminal.  We may encounter operating conditions in these new markets, as well as our current markets, that differ substantially from our current operations, and customer relationships and appropriate freight rates in new markets could be challenging to attain.  We may not be able to duplicate or sustain our operating strategy successfully throughout, or possibly outside of, the US, and establishing terminals and operations in new markets could require more time or resources, or a more substantial financial commitment than anticipated.
Furthermore, the continued progression and development of our logisticsnew business isofferings are subject to the risks, inherent in entering and cultivating new lines of business, including, but not limited to, (1) to:
initial unfamiliarity with pricing, service, operational, and liability issues; (2)
customer relationships may be difficult to obtain or we may have to reduce rates to gain and develop customer relationships; (3)
specialized equipment and information and management systems technology may not be adequately utilized; (4)
insurance and claims may exceed our past experience or estimations; and (5)
we may be unable to recruit and retain qualified personnel and management with requisite experience or knowledge of our logistics services.services, and other developing service offerings.
We derive a significant portion of our revenues from our major customers, the loss of one or more of which could have a materially adverse effect on our business.
We strive to maintain a diverse customer base; however, aA significant portion of our operating revenue is generated from a number of major customers, the loss of one or more of which could have a materially adverse effect on our business. Refer to Part I, Item 1, "Business" for information regarding our customer concentrations. Aside from our dedicated operations, we generally do not have long-term contractual relationships or rate agreements or minimum volume guarantees with our customers. Furthermore, certain of the long-term contracts in our dedicated operations are subject to cancellation. There is no assurance any of our customers, including our dedicated customers will continue to utilize our services, renew our existing contracts, or continue at the same volume levels. Despite the existencelevels, or not seek to modify terms of

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contractual arrangements, certain of our customers may nonetheless engage in competitive bidding processes that could negatively impact our contractual relationship. In addition, certain of our major customers may increasingly use their own truckload and delivery fleets, which would reduce our freight volumes. existing contracts. A reduction in or termination of our services by one or more of our major customers including our dedicated customers, could have a materially adverse effect on our business, financial condition, and results of operations.
Economic conditions and capital markets may adversely affect our customers and their ability to remain solvent.  Retail and discount retail customers account for a substantial portion of our freight. Accordingly, our results may be more susceptible to trends in unemployment and retail sales than carriers that do not have this concentration.
While we review and monitor the financial condition of our key customers on an ongoing basis to determine whether to provide services on credit,In addition, our customers' financial difficulties could nevertheless negatively impact our results of operations and financial condition, especially if these customers were to delay or default on payments to us. For our multi-year and dedicated contracts, the rates we charge may not remain advantageous. A reduction in or terminationFurther, despite the existence of contractual arrangements, certain of our services by one or more ofcustomers may nonetheless engage in competitive bidding processes that could negatively impact our major customers could have a materially adverse effect on our business and results of operations.
Difficulty in obtaining goods and services from our vendors and suppliers could adversely affect our business.
We are dependent upon our vendors and suppliers for certain products and materials. We believe that we have positive vendor and supplier relationships and are generally able to obtain favorable pricing and other terms from such parties. If we fail to maintain amenable relationships with our vendors and suppliers, or if our vendors and suppliers are unable to provide the products and materials we need or undergo financial hardship, we could experience difficulty in obtaining needed goods and services because of production interruptions, limited material availability, or other reasons. Subsequently, our business and operations could be adversely affected.contractual relationship.
We depend on third-party capacity providers, and service instability from these transportation providers could increase our operating costs and reduce our ability to offer intermodal and brokerage services, and limit growth in our logistics operations, which could adversely affect our revenue, results of operations, and customer relationships.
Our intermodal operations use railroads and some third-party drayage carriers to transport freight for our customers, and intermodal dependence on railroads could increase as intermodal services expand. In certain markets, rail service is limited to a few railroads or even a single railroad. Intermodal providers have experienced poor service from providers of rail-based services in the past. Our ability to provide intermodal services in certain traffic lanes would be reduced or eliminated if the railroads' services became unstable. Railroads with which we have, or in the future may have, contractual relationships could reduce their services in the future, which could increase the cost of the rail-based services we provide and could reduce the reliability, timeliness, efficiency, and overall attractiveness of our rail-based intermodal services. Furthermore, railroads increase shipping rates as market conditions permit. Priceprice increases could result in higher costs to us, which we may be unable to pass on to our customers and could result in the reduction or elimination of our ability to offer intermodal services. In addition, we may not be able to negotiate additional contracts with railroads to expand our capacity, add additional routes, obtain multiple providers, or obtain railroad services at current cost levels, any of which could limit our ability to provide this service. Our intermodal operations could also be adversely affected by a work stoppage at one or more railroads or by adverse weather conditions or other factors that hinder the railroads' ability to provide reliable service.
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Our logistics operations are dependent upon the services of third-party capacity providers, including other truckload capacity providers. These third-party providers may seek other freight opportunities and may require increased compensation in times of improved freight demand or tight full truckload capacity. Our third-party capacity providers may also be affected by certain factors to which our driving associates and independent contractors are subject, including, but not limited to, changing workforce demographics, alternative employment opportunities, varying freight market conditions, trucking industry regulations, and limited availability of equipment financing.LTL capacity. Most of our third-party capacity provider transportation services contracts are cancelable on 30 days' notice or less. If we are unable to secure the services of these third-parties, or if we become subject to increases in the prices we must pay to secure such services, and we are not able to obtain corresponding customer rate increases, our business, financial condition, and results of operations may be materially adversely affected.

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If we are unable to recruit, develop, and retain our key employees, our business, financial condition, and results of operations could be adversely affected.
We are highly dependent upon the services of certain key employees, including, but not limited to, our team of executive officers and terminal leaders. We believe our team of executive officers possesses valuable knowledge about the trucking industry and their knowledge of and relationships with our key customers and vendors would be difficult to replicate. We currently do not have employment agreements with our key employees or executive officers, and the loss of any of their services or inadequate succession planning could negatively impact our operations and future profitability.  Additionally, because of our regional operating strategy, we must continue to recruit, develop, and retain skilled and experienced terminal leaders. Failure to recruit, develop, and retain a core group of terminal leaders could have an adverse effect on our results of operations.
Increases in driving associate compensation or difficulties attracting and retaining qualified driving associates could have a materially adverse effect on our profitability and the ability to maintain or grow our fleet.
With respect to our trucking services, difficulty in attracting and retaining sufficient numbers of qualified driving associates, which includes the engagement of independent contractors, in our truckload operations, and third-party capacity providers in our logistics operations, could have a materially adverse effect on our growth and profitability.  The truckload transportation industry is subject to a shortage of qualified driving associates. Such shortage is exacerbated during periods of economic expansion, in which alternative employment opportunities, including in the construction and manufacturing industries, which may offer better compensation and/or more time at home,are more plentiful and freight demand increases, or during periods of economic downturns, in which unemployment benefits might be extended and financing is limited for independent contractors who seek to purchase equipment or for students who seek financial aid for driving school.  Regulatory requirements, including those related to safety ratings, ELDs, hours-of-service changes, and drug and alcohol testing, could further reduce the number of eligible driving associates or force us to increase driving associate compensation to attract and retain driving associates. We believe our employee screening process, which includes extensive background checks and hair follicle drug testing, is more rigorous than generally employed in our industry and has decreased the pool of qualified applicants available to us.We have seen evidence that stricter hours-of-service regulations adopted by the DOT in the past have tightened, and to the extent new regulations are enacted, may continue to tighten the market for eligible driving associates. The lack of adequate tractor parking along some US highways and congestion caused by inadequate highway funding may make it more difficult for drivers to comply with hours-of-service regulations and cause added stress for drivers, further reducing the pool of eligible drivers.We believe the required implementation of ELDs has tightened and may further tighten the market.  We believe the shortage of qualified driving associates and intense competition for driving associates from other trucking companies will create difficulties in maintaining or increasing the number of driving associates and may restrain our ability to engage a sufficient number of driving associates and independent contractors. Our inability to do so may negatively affect our operations. Further, our driving associates compensation and independent contractor expenses are subject to market conditions. We have increased these rates in recent years and we may find it necessary to increase driving associate and independent contractor contracted rates in future periods.
Our independent contractors and third-party capacity providers are responsible for paying for their own equipment, fuel, and other operating costs, and significant increases in these costs could cause them to seek higher contracted rates from us or seek other opportunities within or outside the trucking industry.   In addition, we and many other carriers suffer from a high turnover rate of driving associates and independent contractors. This high turnover rate requires us to spend significant resources recruiting a substantial number of driving associates and independent contractors in order to operate existing revenue equipment and maintain our current level of capacity and subjects us to a higher degree of risk with respect to driving associate and independent contractor shortages than our competitors. We also employ driving associate hiring standards which we believe are more rigorous than the hiring standards generally employed in our industry and could further reduce the pool of available drivers from which we would hire. If we are unable to continue to attract driving associates, independent contractors, and third-party capacity providers, we could be forced to, among other things, limit our growth, decrease the number of our tractors in service, adjust our driving associate compensation package or independent contractor contracted rates, or pay higher rates to third-party capacity providers, which could adversely affect our profitability and results of operations if not offset by a corresponding increase in customer rates.

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Our contractual agreements with independent contractors expose us to risks that we do not face with our company driving associates.
Our financing subsidiaries offer financing to some of the independent contractors we contract with to purchase or lease tractors from us. If these independent contractors default or experience a lease termination in conjunction with these agreements and we cannot replace them, we may incur losses on amounts owed to us. Also, if liquidity constraints or other restrictions prevent us from providing financing to the independent contractors we contract with in the future, then we could experience a shortage of independent contractors.
Pursuant to our fuel reimbursement program with independent contractors, when fuel prices increase above a certain level, we share the cost with the independent contractors we contract with in order to mute the impact that increasing fuel prices may have on their business operations. A significant increase or rapid fluctuation in fuel prices could cause our reimbursement costs under this program to be higher than the revenue we receive from our customers under our fuel surcharge programs.
Independent contractors are third-party service providers, as compared to company driving associates who are employed by us. As independent business owners, the independent contractors we contract with may make business or personal decisions that conflict with our best interests. For example, if a load is unprofitable, route distance is too far from home, personal scheduling conflicts arise, or for other reasons, independent contractors may deny loads of freight from time-to-time. In these circumstances, we must be able to timely deliver the freight in order to maintain relationships with customers.
We are dependent on management information and communications systems and other information technology assets (including the data contained therein), and a significant systems disruption or failure in the foregoing, including those caused by cybersecurity breaches, could adversely affect our business.
Our business depends on the efficient, stable, and uninterrupted operation of our management information and communications systems and other information technology assets (including the data contained therein). Some of our key software, hardware systems, and infrastructure were developed internally or by adapting purchased software applications and hardware to suit our needs.  Our management information and communication systems are used in various aspects of our business, including but not limited to load planning and receiving, dispatch of driving associates and third-party capacity providers, customer billing, producing productivity, financial and other reports, and other general functions and purposes. If any of our critical information or communications systems fail or become unavailable, we may have to perform certain functions manually, which could temporarily affect the efficiency and effectiveness of our operations. Our operations and those of our technology and communications service providers are vulnerable to interruption by natural disaster, fire, power loss, telecommunications failure, cyber-attacks, terrorist attacks, internet failures, computer viruses, malware, hacking, and other events beyond our control. More sophisticated and frequent cyber-attacks in recent years have also increased security risks associated with information technology systems. We also maintain information security policies to protect our systems, networks and other information technology assets (and the data contained therein) from cybersecurity breaches and threats, such as hackers, malware and viruses; however, such policies cannot ensure the protection of our systems, networks and other information technology assets (and the data contained therein). We currently maintain our primary computer hardware systems at Knight's and Swift's headquarters, both located in Phoenix, Arizona, along with computer equipment at each of our terminals.  In an attempt to reduce the risk of disruption to our business operations should a disaster occur, we have redundant computer systems and networks and the capability to deploy these back-up systems from an off-site alternate location.  We believe that any such disruption would be minimal, moderate, or temporary. However, we cannot predict the likelihood or extent to which such alternate location or our information and communication systems would be affected. Our business and operations could be adversely affected in the event of a system failure, disruption, or security breach that causes a delay, interruption, or impairment of our services and operations.
We receive and transmit confidential data with and among our customers, driving associates, vendors, employees, and service providers in the normal course of business. Despite our implementation of secure transmission techniques, internal data security measures, and monitoring tools, our information and communication systems are vulnerable to disruption of communications with our customers, driving associates, vendors, employees, and service providers. Our systems are also vulnerable to unauthorized access and viewing, misappropriation, altering, or deleting of information, including customer, driving associate, vendor, employee, and service provider information and our proprietary business information. A security breach could damage our business operations and reputation and could cause us to incur costs associated with repairing our systems, increased security, customer notifications, lost operating revenue, litigation, regulatory action, and reputational damage.

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Seasonality and the impact of weather and other catastrophic events affect our operations and profitability.
Our tractor productivity decreases during the winter season because inclement weather impedes operations, and some shippers reduce their shipments after the winter holiday season.  Revenue can be affected by bad weather and holidays, since revenue is directly related to available working days of shippers.  At the same time, operating expenses increase because harsh weather creates higher accident frequency, increased claims, and more equipment repairs. Fuel efficiency declines because of increased engine idling.  In addition, some of our customers demand additional capacity during the fourth quarter, which could limit our ability to take advantage of more attractive spot market rates that generally exist during such periods. Further, despite our efforts to meet such demands, we may fail to do so, which may result in lost future business opportunities with such customers, which could have an adverse effect on our operations. We may also suffer from weather-related or other unforeseen events such as tornadoes, hurricanes, blizzards, ice storms, floods, fires, earthquakes, and explosions.  These events may disrupt fuel supplies, increase fuel costs, disrupt freight shipments or routes, affect regional economies, destroy our assets, or adversely affect the business or financial condition of our customers, any of which could have a materially adverse effect on our results of operations or make our results of operations more volatile.
Insurance and claims expenses could significantly reduce our earnings.
Our future insurance and claims expense might exceed historical levels, which could reduce our earnings. We self-insure, or insure through our captive insurance companies, a significant portion of our claims exposure resulting from workers' compensation, auto liability, general liability, cargo and property damage claims, as well as Knight's employee health insurance (and effective January 1, 2020, Swift's health insurance), which could increase the volatility of, and decrease the amount of, our earnings, and could have a materially adverse effect on our results of operations.exposure. For a detailed discussion of our self-insurance programs, including self-insurance retention limits, please refer to Note 1312 to the consolidated financial statements, included in Part II, Item 8 of this Annual Report. Higher self-insured retention levels may increase the impact of auto liability occurrences on our results of operations. We are also responsible for our legal expenses relating to such claims. We reserve for anticipated losses and expenses and periodically evaluate and adjust our claims reserves to reflect our experience. Estimating the number and severity of claims, as well as related judgment or settlement amounts, is inherently difficult, and claims may ultimately prove to be more severe than our estimates. This, along with legal expenses, incurred but not reported claims, and other uncertainties can cause unfavorable differences between actual self-insurance costs and our reserve estimates. Accordingly, ultimate results may differ materially from our estimates, which could result in losses over our reserved amounts and could materially adversely affect our financial condition and results of operations.
We maintain insurance with licensed insurance carriers above the amounts in which we self-insure. Although we believe our aggregate insurance limits should be sufficient to cover reasonably expected claims, it is possible that the amount of one or more claims could exceed our aggregate coverage limits. If any claim were to exceed our coverage, we would bear the excess, in addition to our other self-insured amounts. InsuranceFurthermore, insurance carriers have raised premiums for many businesses, including transportation companies. As a result, our insurance and claims expense could increase, or we could raise our self-insured retention or decrease the amount of our excess insurance coverage when our policies are renewed or replaced. Our results of operations and financial condition could be materially and adversely affected if (1) cost per claim or the number of claims significantly exceeds our coverage limits or retention amounts; (2) we are unable to obtain insurance coverage in amounts we deem sufficient; (3) we experience a significant increase in premiums; (4) we experience a claim in excess of our coverage limits; (5) our insurance carriers fail to pay on our insurance claims; or (6) we experience a claim for which coverage is not provided.
Healthcare legislation and inflationary cost increases could also negatively impact financial results by increasing annual employee healthcare costs. We cannot presently determine the extent of the impact such increased healthcare costs will have on our financial performance. In addition, rising healthcare costs could negatively impact financial results or force us to make changes to existing benefit programs, which could negatively impact our ability to attract and retain employees.
Insuring risk through our captive insurance companies could adversely impact our operations.
We insure a portion of our riskcertain affiliated risks through our captive insurance companies,company, Mohave and through our risk retention group, Red Rock. In addition to insuring portions of our own risk,Additionally, Mohave provides reinsurance coverage to third-party insurance companies associated with ourfor affiliated companies' independent contractors.risks insured by those third-party insurance companies. Red Rock insures a share of our automobile liability risk. The insurance and reinsurance markets are subject to market pressures. Our captive insurance companies' abilities or needs to access the reinsurance markets may involve the retention of additional risk, which could expose us to volatility in claims expenses.

Our captive insurance companies are regulated by state authorities. State regulations generally provide protection to policy holders, rather than stockholders. These regulations may increase our costs of regulatory compliance, limit our ability to change premiums, restrict our ability to access cash held in our captive insurance companies, and otherwise impede our ability to take actions we deem advisable.
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To comply with certain state insurance regulatory requirements, cash and cash equivalents must be paid to Red Rock and Mohave as capital investments and insurance premiums, to be restricted as collateral for anticipated losses. The restricted cash is used for payment of insured claims. In the future, we may continue to insure our automobile liability risk through our captive insurance subsidiaries, which will cause increases in the required amount of our restricted cash or other collateral, such as letters of credit. Significant increases in the amount of collateral required by third-party insurance carriers and regulators would reduce our liquidity.
If we are unable to recruit, develop, and retain our key employees, our business, financial condition, and results of operations could be adversely affected.
Compliance Risk
We operate in aare highly regulateddependent upon the services of certain key employees and we believe their valuable knowledge about the trucking industry and changesrelationships with our key customers and vendors would be difficult to replicate. We currently do not have employment agreements with our key employees, and the loss of any of their services or inadequate succession planning could negatively impact our operations and future profitability.
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Increases in existing regulationsdriving associate compensation or violations of existing or future regulationsdifficulties attracting and retaining qualified driving associates could have a materially adverse effect on our operationsprofitability and profitability.the ability to maintain or grow our fleet.
We have authority to operateDifficulty in the US, as granted by the DOT, Mexico (as granted by the Secretaría de Comunicaciones y Transportes),attracting and various Canadian provinces (as granted by the Ministriesretaining sufficient numbers of Transportation and Communication in such provinces). In the US, we are also regulated by the EPA, US Department of Homeland Security, and other agencies in states in which we operate. Our companyqualified driving associates, independent contractors, and third-party capacity providers, must also complycould have a materially adverse effect on our growth and profitability. The full truckload and LTL transportation industries are subject to a shortage of qualified driving associates. Such shortage is exacerbated during periods of economic expansion, in which there may be alternative employment opportunities, or during periods of economic downturns, in which unemployment benefits might be extended and financing is limited for independent contractors who seek to purchase equipment or for students who seek financial aid for driving school. Furthermore, capacity at driving schools may be limited by COVID-19-related social distancing requirements. Vaccination, testing, and mask mandates may reduce the pool of potential drivers. Regulatory requirements could further reduce the number of eligible driving associates. We believe our employee screening process, which includes extensive background checks and hair follicle drug testing, is more rigorous than generally employed in our industry and has decreased the pool of qualified applicants available to us.Our inability to engage a sufficient number of driving associates and independent contractors may negatively affect our operations. Further, our driving associate compensation and independent contractor expenses are subject to market conditions and we may find it necessary to increase driving associate and independent contractor contracted rates in future periods.
In addition, we suffer from a high turnover rate of driving associates and independent contractors. This high turnover rate requires us to spend significant resources on recruiting and retention.
Our arrangements with the applicable safety and fitness regulationsindependent contractors expose us to risks that we do not face with our company driving associates.
Our financing subsidiaries offer financing to some of the DOT, including those relatingindependent contractors we contract with to drugpurchase or lease tractors from us. If these independent contractors default or experience a lease termination in conjunction with these agreements and alcohol testing, driver safety performance, and hours-of-service. Matters such as weight, equipment dimensions, exhaust emissions, and fuel efficiency are also subjectwe cannot replace them, we may incur losses on amounts owed to government regulations.  We may also become subjectus. Also, if liquidity constraints or other restrictions prevent us from providing financing to new or more restrictive regulations relating to fuel efficiency, exhaust emissions, hours-of-service, drug and alcohol testing, ergonomics, on-board reporting of operations, collective bargaining, security at ports, speed limiters, driver training, and other matters affecting safety or operating methods. Future laws and regulations may be more stringent, require changes in our operating practices, influence the demand for transportation services, or require us to incur significant additional costs. Higher costs incurred by us, or by our suppliers who pass the costs onto us through higher supplies and materials pricing, could adversely affect our results of operations. In addition, the Trump administration has indicated a desire to reduce regulatory burdens that constrain growth and productivity, and also to introduce legislation such as infrastructure spending, that could improve growth and productivity. Changes in regulations, such as those related to trailer size and gross vehicle weight limits, hours-of-service, mandating ELDs, and drug and alcohol testing, could increase capacityindependent contractors we contract with in the industry or improve the positionfuture, then we could experience a shortage of certain competitors, either of which could negatively impact pricing and volumes, or require additional investments by us. The short and long term impacts of changes in legislation or regulations are difficult to predict and could materially and adversely affect our operations.independent contractors.
Our lease contracts with independent contractors are governed by federal leasing regulations, which impose specific requirements on us and the independent contractors. In the past, we have been the subject of lawsuits, alleging violations of lease agreements or failure to follow the contractual terms, some of which resulted in adverse decisions against the Company. We could be subjected to similar lawsuits and decisions in the future, which if determined adversely to us, could have an adverse effect on our financial condition.
In December 2016,We are dependent on management information and communications systems and other information technology assets (including the FMCSA established new minimum training standardsdata contained therein), and a significant systems disruption or failure in the foregoing, including those caused by cybersecurity breaches, could adversely affect our business.
Our business depends on the efficient, stable, and uninterrupted operation of our management information and communications systems and other information technology assets (including the data contained therein). Our management information and communication systems are used in various aspects of our business. If any of our critical information or communications systems fail or become unavailable, it could temporarily affect the efficiency and effectiveness of our operations. Our operations and those of our providers are vulnerable to interruption by natural disasters, such as fires, storms, and floods, which may increase in frequency and severity due to climate change. We are also vulnerable to interruption by power loss, telecommunications failure, cyber-attacks, terrorist attacks, internet failures, and other events beyond our control. Our business and operations could be adversely affected in the event of a system failure, disruption, or security breach that causes a delay, interruption, or impairment of our services and operations.
We receive and transmit confidential data in the normal course of business. Despite our implementation of safeguards, our information and communication systems are vulnerable to disruption, unauthorized access and viewing, misappropriation, altering, or deleting of information. A security breach could damage our business operations and reputation and could cause us to incur costs associated with repairing our systems, increased security, customer notifications, lost operating revenue, litigation, regulatory action, and reputational damage.
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
Some of our employees work remotely, which may increase the cybersecurity risks to our business, including an increased demand for certain individuals applyinginformation technology resources, increased risk of phishing, and other cybersecurity attacks.
We have, and will continue to have, a portion of our employee population that works from home full-time or under flexible work arrangements, and we have provided associates with expanded remote network access options which enable them to work outside of our corporate infrastructure and, in some cases, use their own personal devices, which exposes us to additional cybersecurity risks. Our employees working remotely may expose us to cybersecurity risks through: (i) unauthorized access to sensitive information as a result of increased remote access, including our employees’ use of Company-owned and personal devices and videoconferencing functions and applications to remotely handle, access, discuss, or transmit confidential information, (ii) increased exposure to phishing and other scams as cybercriminals may, among other things, install malicious software on our systems and equipment and access sensitive information, and (iii) violation of international, federal, or state-specific privacy laws. We believe that the increased number of employees working remotely has incrementally increased our cyber risk profile, but we are unable to predict the extent or impacts of those risks at this time. A significant disruption of our information technology systems, unauthorized access to or loss of confidential information, or legal claims resulting from our violation of privacy laws could each have a material adverse effect on our business.
Seasonality and the impact of weather and other catastrophic events could have a materially adverse effect on our results of operations and profitability or make our results of operations and profitability more volatile.
"Seasonality" in Part I, Item 1 of this Annual Report, discusses in detail how seasonality and weather could impact our operations.
Our business and results of operations have been and will be, and our financial condition may be, impacted by the outbreak of COVID-19 or other similar outbreaks, and such impact could be materially adverse, during the pandemic or after the pandemic subsides.
The global spread of COVID-19, including its variants, has created, and any other outbreaks of similar contagious diseases or other adverse public health developments could create, significant volatility, uncertainty and economic disruption. We have experienced an increase in absences among our driver and non-driver personnel due to the outbreak of COVID-19. Our operations, particularly in areas of increased COVID-19 infections could be disrupted. Furthermore, government vaccine, testing, and mask mandates could increase our turnover and make recruiting more difficult, particularly among our driver personnel. "Other Regulation" in Part I, Item 1 of this Annual Report, discusses in detail COVID-19 vaccination, testing, and mask mandates. Negative financial results, operational disruptions, driver and non-driver absences, uncertainties in the market, and a tightening of credit markets, caused by COVID-19, other similar outbreaks, or a recession, could have a material adverse effect on our liquidity, reduce credit options available to us, and adversely impact our ability to effectively meet our short- and long-term obligations.
The COVID-19 outbreak has caused uncertainty in the economy. Risks related to an economic slowdown or recession are described in our risk factor titled "Our business is subject to economic, credit, business, and regulatory factors that are largely beyond our control, any of which could have a materially adverse effect on our results of operations."
Developments related to COVID-19 have been unpredictable and the extent to which further developments could impact our operations, financial condition, liquidity, results of operations, and cash flows is highly uncertain. Such developments may include the duration of the virus, the distribution and availability of vaccines, vaccine hesitancy, the severity of the disease, and the actions that may be taken by various governmental authorities and other third parties in response to the pandemic.
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
Compliance Risk
We operate in a highly regulated industry, and changes in existing regulations or violations of existing or future regulations could have a materially adverse effect on our operations and profitability.
We, our drivers, and our equipment are regulated by the DOT, the EPA, the DHS, and other state and federal agencies in the states, provinces, and countries in which we operate. Future laws and regulations or changes to existing laws and regulations may be more stringent, require changes in our operating practices, influence the demand for (or upgrading) a Class Atransportation services, or Class B commercial driver's license, or obtaining a hazardous materials, passenger, or school bus endorsement on their commercial driver's license for the first time.require us to incur significant additional costs, which could materially adversely affect our business, financial condition, and results of operations.
"Industry Regulation" in Part I, Item 1 of this Annual Report, discusses in detail this standard and several other proposed, pending, suspended, and finalindustry regulations that could materially impact our business, and operations.
The CSA program adopted by the FMCSA could adversely affect our profitability and operations, our ability to maintain or grow our fleet, and our customer relationships.
Under CSA, fleets are evaluated and ranked against their peers based on certain safety-related standards. As a result, our fleet could be ranked poorly as compared to our peer carriers. We recruit and retain first-time driving associates to be part of our fleet, and these driving associates may have a higher likelihood of creating adverse safety events under CSA. The occurrence of future deficiencies could affect driving associate recruitment by causing high-quality driving associates to seek employment with other carriers or limit the pool of available driving associates. This could also cause our customers to direct their business away from us and to carriers with higher fleet safety rankings. These factors would adversely affect our business, financial condition, and results of operations. Additionally, competition for driving associates with favorable safety backgrounds may increase, which could necessitate increases in driving

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associate-related compensation costs. Further, we may incur greater than expected expenses in our attempts to improve unfavorable scores.
"Industry Regulation" in Part I, Item 1 of this Annual Report, provides discussion of the FAST Act and CSA reform.
Receipt of an unfavorable DOT safety rating or an unfavorable ranking under the CSA program could have a materiallymaterial adverse effect on our operationsprofitability and profitability.operations.
The FMCSA has proposed regulations that would modify the existing rating system and the safety labels assigned to motor carriers evaluated by the DOT. If similar regulations were enacted and we were to receive an unfit or other negative safety rating, our business would be materially adversely affected in the same manner as if we received a conditional or unsatisfactory DOT safety rating or an unfavorable ranking under the current regulations. In addition, poor safety performanceCSA program, it could lead to increased risk of liability, increased insurance, maintenance and equipment costs, and potential loss of customers, which could materially adversely affect our business, financial condition, and results of operations.
"Industry Regulation" in Part I, Item 1 of this Annual Report, provides discussion of the DOT safety rating system and Safety fitness determination.the CSA program.
Compliance with various environmental laws and regulations to which our operations are subject may increase our costs of operations, and non-compliance with such laws and regulations could result in substantial fines or penalties.
In addition to direct regulation by the DOT and related agencies, we are subject to various federal, state, and local environmental laws and regulations dealing with the transportation, storage, discharge, presence, use, disposal, and handling of hazardous materials, wastewater, storm water, waste oil, and fuel storage tanks. We are also subject to various environmental laws and regulations involving air emissions from our equipment and facilities, and discharge and retention of storm water.  Our terminals often are located in industrial areas where groundwater or other forms of environmental contamination may have occurred or could occur. Our operations involve the risks of fuel spillage or seepage, environmental damage, and hazardous waste disposal, among others. Certain of our facilities have waste oil or fuel storage tanks and fueling islands. A small percentage of our freight consists of low-grade hazardous substances, which subjects us to a wide array of regulations. We have instituted programs to monitor and control environmental risks and promote compliance with applicable environmental laws and regulations; however, if (1) we are involved in a spill or other accident involving hazardous substances; (2) there are releasesthe event of hazardous substances we transport; (3) soil or groundwater contamination is found at our facilities or results from our operations; or (4) we are found to be in violationany of or fail to comply with applicable environmental laws or regulations, thenthe following, we could be subject to clean-up costs and liabilities, including substantial fines or penalties or civil and criminal liability, any of which could have a materially adverse effect on our business and results of operations.operations:
we are involved in a spill or other accident involving hazardous substances;
there are releases of hazardous substances we transport;
soil or groundwater contamination is found at our facilities or results from our operations; and
we are found to be in violation of or fail to comply with applicable environmental laws or regulations, then we fail to comply with such laws and regulations.
Certain of our terminals are located on or near environmental Superfund sites designated by the EPA and/or state environmental authorities. We have not been identified as a potentially responsible party with regard to any such site. Nevertheless, we could be deemed responsible for clean-up costs.
In addition, tractors and trailers used in our full truckload and LTL operations have been and are affected by federal, state,laws and local statutory and regulatory requirementsregulations related to air emissions and fuel efficiency, including rules established in 2011 and 2016 by the NHTSA and the EPA and certain states for stricter fuel efficiency standards for heavy trucks, described in detail inefficiency. "Environmental Regulation" in Part I, Item 1 of this Annual Report. In orderReport, provides a discussion of the environmental laws and regulations applicable to reduce exhaust emissionsour business and traffic congestion, some states and municipalities have restricted the locations and amountoperations.
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Developments in labor and employment law and any unionizing efforts by employees could have a materially adverse effect on our results of operations.
Although our only collective bargaining agreement exists at our Mexican subsidiary, Trans-Mex, we always face the risk that our employees will try to unionize. Congress, federal agencies, or one or more states could adopt legislation or regulations significantly affecting our business and our relationship with our employees, such as the previously proposed federal legislation referred to as the "Employee Free Choice Act" that would substantially liberalize the procedures for union organizing. Any attempt to organize by our employees could result in increased legal and other

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associated costs. Additionally, given the NLRB's "speedy election" rule, it would be difficult to timely and effectively address any unionizing efforts.  If we entered into a collective bargaining agreement with our domestic employees, the termsit could materially adversely affecthave a material adverse effect on our costs, efficiency,business, customer retention, financial condition, results of operations, and liquidity, and could cause significant disruption of, or inefficiencies in, our operations, because:
restrictive work rules could hamper our ability to generate acceptable returnsimprove or sustain operating efficiency or could impair our service reputation and limit our ability to provide certain services;
a strike or work stoppage could negatively impact our profitability and could damage customer and employee relationships;
shippers may limit their use of unionized companies because of the threat of strikes and other work stoppages;
unionization of any of our operations could lead to pressure on the affected operations. our LTL and full truckload employees to unionize;
collective agreements could result in material increases in wages and benefits; and
an election and bargaining process could divert management’s time and attention from our overall objectives and impose significant expenses.
If the independent contractors we contract with were ever re-classified as employees, the magnitude of this risk would increase.
In addition, the Department "Industry Regulation" in Part I, Item 1 of Labor ("DOL") issued a final rule in 2016 raising the minimum salary basis for executive, administrative,this Annual Report, provides discussion of labor and professional exemptions from overtime payment.  The rule increases the minimum salary from $23,660employment laws applicable to $47,476. Additionally, up to a 10% of non-discretionary bonus, commission, and other incentive payments can be counted towards the minimum salary requirement.  The rule was scheduled to go into effect on December 1, 2016. However, the rule was temporarily enjoined from going into effect in November 2016, and later invalidated in August 2017, after several states and business groups filed separate lawsuits against the DOL challenging the rule. However, any similar future rule that: (1) impacts the way we classify certain positions, (2) increases our payment of overtime wages, or (3) increases the salaries we pay to currently exempt employees to maintain their exempt status, may have an adverse effect on our business financial condition, and results of operations.
In May 2015, the US Supreme Court refused to grant certiorari to appellees in the US Court of Appeals for the Ninth Circuit case, Dilts et al. v. Penske Logistics, LLC, et al. Consequently, the Appeals Court decision stood, holding that California state wage and hour laws are not preempted by federal law. However, in December 2018, the FMCSA granted a petition filed by the American Trucking Associations, and in doing so determined that federal law does preempt California’s wage and hour laws, and interstate truck drivers are not subject to such laws. The FMCSA’s decision has been appealed by labor groups, and multiple lawsuits have been filed in federal courts seeking to overturn the decision, and thus it’s uncertain whether it will stand. Other wage and hour laws with the states and localities, including laws related to employee meal breaks and rest periods, may also vary significantly from federal law. As a result, the trucking industry has been confronted with a patchwork of state and local laws, and we have been and are currently subject to certain class-action lawsuits for violating such laws. Further, driver piece rate compensation, which is an industry standard, has been attacked as non-compliant with state minimum wage laws. Both of these issues are adversely impacting us and the industry as a whole, with respect to the practical application of the laws, thereby resulting in additional cost. In our individual capacity, as well as participating with industry trade organizations, we support and actively pursue legislative relief through Congress. In the past, federal legislation has been proposed that would clarify the preemptive scope of federal transportation law and regulations, as originally contemplated by Congress. We believe enacting such legislation would eliminate much of the current wage and hour confusion along with lessening the burden on interstate commerce. However, the passage of such proposed federal legislation is uncertain. Existing state and local laws, as well as new laws adopted in the future, which are not preempted by federal law, may result in increased labor costs, driving associate turnover, reduced operational efficiencies, and amplified legal exposure.
If our independent contractors are deemed by regulators or the judicial process to be employees, our business, financial condition, and results of operations could be adversely affected.
Tax and other regulatory authorities, as well as independent contractors themselves, have increasingly asserted that independent contractors in the trucking industry are employees rather than independent contractors for a variety of purposes, including income tax withholding, workers' compensation, wage and hour compensation, unemployment, and other issues. Federal legislators have introduced legislation in the past to make it easier for tax and other authorities to reclassify independent contractors as employees, including legislation to increase the recordkeeping requirements for those that engage independent contractors and to increase the penalties of companies who misclassify their employees as independent contractors and are found to have violated employees' overtime and/or wage requirements. Additionally, federal legislators have sought to (1) abolish the current safe harbor (which allows taxpayers meeting certain criteria to treat individuals as independent contractors if they are following a long-standing, recognized practice), (2) extend the FLSA to independent contractors, and (3) impose notice requirements based upon employment or independent contractor status and fines for failure to comply. Some states have adopted initiatives to increase their revenues from items such as unemployment, workers' compensation, and income taxes, and a reclassification of independent contractors as employees would help states with these initiatives. Additionally, courts in certain states have issued recent decisions that could result in a greater likelihood that independent contractors would be judicially classified as employees in such states. In September 2019, California enacted a law that made it more difficult for workers to be classified as independent contractors (as opposed to employees). "Industry Regulation" in Part I, Item 1 of this Annual Report, provides discussion of this new California law. Taxing and other regulatory authorities and courts also apply a variety of standards in their determination of independent contractor status. In addition, carrierscontractors. Carriers such as us that operate or have operated lease-purchase programs have been more susceptible to lawsuits seeking

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to reclassify independent contractors that have engaged in such programs. If the independent contractors we engage were determined to be our employees, we would incur additional exposure under federal and state tax, workers' compensation, unemployment benefits, labor, employment, insurance, discrimination, and tort laws, including for prior periods, as well as potential liability for employee benefits and tax withholdings. Furthermore, if independent contractors were deemed employees, then certain of our third-party revenue sources, including shop and insurance margins, would be eliminated.
We are party to class actions from time-to-time alleging violations "Industry Regulation" in Part I, Item 1 of the FLSA and other state and federal laws and seeking to reclassifythis Annual Report, provides discussion of legislation regarding independent contractors as employees. Adverse decisions on these or similar matters could adversely affect our results of operations and profitability, particularly if a decision results in exposure that exceeds our related accrual.contractors.
Litigation may adversely affect our business, financial condition, and results of operations.
Our business is subject to the risk of litigation by employees, independent contractors, customers, vendors, government agencies, stockholders, and other parties through private actions, class actions, administrative proceedings, regulatory actions, and other processes.litigation. Recently, trucking companies, including us, have been subject to lawsuits, including class action lawsuits, alleging violations of various federal and state wage and hour laws regarding, among other things, employee meal breaks, rest periods, overtime eligibility, and failure to pay for all hours worked. A number of these lawsuits have resulted in the payment of substantial settlements or damages by the defendants.
The outcome of litigation, particularly class action lawsuits and regulatory actions, is difficult to assess or quantify, and the magnitude of the potential loss relating to such lawsuits may remain unknown for substantial periods of time. The cost to defend litigation may also be significant. Not all claims are covered by our insurance, and there can be no assurance that our coverage limits will be adequate to cover all amounts in dispute. To the extent we experience claims that are uninsured, exceed our coverage limits, involve significant aggregate use of our self-insured retention amounts, or cause increases in future premiums, the resulting expenses could have a materially adverse effect on our business, results of operations, financial condition, or cash flows.
In addition, we may be subject, and have been subject in the past, to litigation resulting from trucking accidents. The number and severity of litigation claims may be worsened by distracted driving by both truck drivers and other motorists. These lawsuits have resulted, and may result in the future, in the payment of substantial settlements or damages and increases of our insurance costs.
Our captive insurance companies are subject to substantial government regulation.
Our captive insurance companies are regulated by state authorities. State regulations generally provide protection to policy holders, rather than stockholders, and generally involve:
approval of premium rates for insurance;
standards of solvency;
minimum amounts of statutory capital surplus that must be maintained;
limitations on types and amounts of investments;
regulation of dividend payments and other transactions between affiliates;
regulation of reinsurance;
regulation of underwriting and marketing practices;
approval of policy forms;
methods of accounting; and
filing of annual and other reports with respect to financial condition and other matters.
These regulations may increase our costs of regulatory compliance, limit our ability to change premiums, restrict our ability to access cash held in our captive insurance companies, and otherwise impede our ability to take actions we deem advisable.
Uncertainties in the interpretation and application of the Tax Cuts and Jobs Act could materially affect our tax obligations and effective tax rate.
On December 22, 2017, the US government enacted significant changes to its tax law following the passage of the Tax Cuts and Jobs Act. The new law requires complex computations not previously required by US tax law. As such,

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the application of accounting guidance for such items is currently uncertain. Further, compliance with the new law and the accounting for such provisions requires preparation and analysis of information not previously required or regularly produced. In addition, the US Department of Treasury has broad authority to issue regulations and interpretative guidance that may significantly impact how we will apply the law and impact our results of operations in future periods. Accordingly, while we have provided a provisional estimate on the effect of the new law in our consolidated financial statements, further regulatory or GAAP accounting guidance for the law, our further analysis on the application of the law, and refinement of our initial estimates and calculations could materially change our current provisional estimates, which could in turn materially affect our tax obligations and effective tax rate. There are also likely to be significant future impacts that these tax reforms will have on our future financial results and our business strategies. In addition, there is a risk that states or foreign jurisdictions may amend their tax laws in response to these tax reforms, which could have a material impact on our future results.
Changes to trade regulation, quotas, duties or tariffs, caused by the changing US and geopolitical environments or otherwise, may increase our costs and adversely affect our business.
President Trump has expressed antipathy towards certain existing international trade agreements and made comments suggesting that he supports significantly increasing tariffs on goods imported into the US. In December 2019, preliminary agreement on a new trade deal with Canada and Mexico, the USMCA, was reached, and while the timing of approving the USMCA is still uncertain, the USMCA could impact the amount, movement, and patterns of freight transported by the Company. Further, recent activity by the Trump administration has led to the imposition of tariffs on certain imported steel and aluminum. The implementation of these tariffs, as well as the imposition of additional tariffs or quotas or changes to certain trade agreements, could, among other things, increase the costs of the materials used by our suppliers to produce new revenue equipment or increase the price of fuel. Such cost increases for our revenue equipment suppliers would likely be passed on to us, and to the extent fuel prices increase, we may not be able to fully recover such increases through rate increases or our fuel surcharge program, either of which could have an adverse effect on our business.
Increasing attention on environmental, social, and governance (ESG) matters may have a negative impact on our business, impose additional costs on us, and expose us to additional risks.
Companies are facing increasing attention from stakeholders relating to ESG matters, including environmental stewardship, social responsibility, and diversity and inclusion. Organizations that provide information to investors on corporate governance and related matters have developed ratings processes for evaluating companies on their approach to ESG matters. Such ratings are used by some investors to inform their investment and voting decisions. Unfavorable ESG ratings may lead to negative investor sentiment toward the Company, which could have a negative impact on our stock price.
We recently published our Sustainability Report. This report reflects our current initiatives and is not a guarantee that we will be able to achieve them. Our ability to successfully execute these initiatives and accurately report our progress presents numerous operational, financial, legal, reputational and other risks, many of which are outside our control, and all of which could have a material negative impact on our business. Additionally, the implementation of these initiatives imposes additional costs on us. If our ESG initiatives fail to satisfy our stakeholders, then our reputation, our ability to attract or retain employees, and our attractiveness as an investment and business partner could be negatively impacted. Similarly, our failure, or perceived failure, to pursue or fulfill our goals, targets and objectives or to satisfy various reporting standards within the timelines we announce, or at all, could also have similar negative impacts and expose us to government enforcement actions and private litigation.
Financial Risk
We have significant ongoing capital requirements that could affect our profitability if our capital investments do not match customer demand for invested resources, we are unable to generate sufficient cash from operations, or we are unable to obtain financing on favorable terms.
TheOur full truckload industry and our truckloadLTL operations are capital intensive, and our policy of operating newer equipment requires us to expend significant amounts on capital annually. The amount and timing of such capital expenditures depend on various factors, including anticipated freight demand and the price and availability of assets. If anticipated demand differs materially from actual usage, our capital intensive full truckload and LTL operations may have too many or too few assets. Moreover, resourceThe expansion of our operations to LTL has increased and will continue to increase our capital requirements vary based on customer demand, which may be subject to seasonal or general economic conditions.for real estate associated with LTL operations. During periods of decreased customer demand, our asset utilization may suffer, and we may be forced to sell equipment on the open market or turn in equipment under certain equipment leases in order to right-size our fleet. This could cause us to incur losses on such sales or require payments in connection with such turn-ins, particularly during times of a softer used equipment market, either of which could have a materially adverse effect on our profitability. Our ability to select profitable freight and adapt to changes in customer transportation requirements is important to efficiently deploy resources and make capital investments in tractors and trailers (with respect to our truckload operations) or obtain qualified third-party capacity at a reasonable price (with respect to our logistics operations).
Our capital expenditures are funded primarily with cash flows from operations and borrowings under the Revolver.  If these sources were insufficient to meet our capital expenditure needs, we would need to seek alternative sources of capital, including additional borrowing or equity capital. In the event that we are unable to generate sufficient cash from operations, maintain compliance with financial and other covenants in our financing agreements, or obtain equity capital or financing on favorable terms in the future, we may have to limit our fleet size, enter into less favorable financing, or operate our revenue equipment for longer periods, any of which could have a materially adverse effect on our operations and profitability.
Credit markets may weaken at some point in the future, which would make it difficult for us to access our current sources of credit and difficult for our lenders to find the capital to fund us. We may need to incur additional debt, or issue debt or equity securities in the future, to refinance existing debt, fund working capital requirements, make

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investments, or support other business activities. Declines in consumer confidence, decreases in domestic spending, economic contractions, rating agency actions, and other trends in the credit market may impair our future ability to secure financing on satisfactory terms, or at all.
Upgrading our tractors to reduce the average age
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Upgrades of our tractor fleet may not result in an increase in profitability or cost savings. Expected improvements in operating ratio from upgrading our fleet may lag behind new tractor deliveries, as we may experience costs associated with preparing our old tractors for trade and our new tractors for integration into our fleet. We may also lose driving time while swapping revenue equipment. Further, tractor prices have increased and may continue to increase, due in part to government regulations applicable to newly manufactured tractors and diesel engines.
In addition, we cannot be certain that an agreement will be reached on price, equipment trade-ins, or other terms that we deem favorable. If we do enter an agreement for the purchase of new tractors, we could be exposed to the risk that the new tractor deliveries will be delayed. Accordingly, we are subject to an increased risk that upgrades of our tractor fleet will not result in the operational results, cost savings, and increases in profitability that we expect.
KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
In the future, we may need to obtain additional financing that may not be available or, if it is available, may result in a reduction in the percentage ownership of our then-existing stockholders.
We may need to raise additional funds in order to:
finance unanticipated working capital requirements, capital investments, or refinance existing indebtedness;
develop or enhance our technological infrastructure and our existing products and services;
fund strategic relationships;
respond to competitive pressures; and
acquire complementary businesses, technologies, products, or services.
If the economy and/or the credit markets weaken, or we are unable to enter into finance or operating leases to acquire revenue equipment on terms favorable to us, our business, financial results, and results of operations could be materially adversely affected, especially if consumer confidence declines and domestic spending decreases. If adequate funds are not available or are not available on acceptable terms, our ability to fund our strategic initiatives, take advantage of unanticipated opportunities, develop or enhance technology or services, or otherwise respond to competitive pressures could be significantly limited. If we raise additional funds by issuing equity or convertible debt securities, the percentage ownership of our then-existing stockholders may be reduced, and holders of these securities may have rights, preferences, or privileges senior to those of our then-existing stockholders.
In the event of an economic downturn or disruption in the credit markets, our indebtedness could place us at a competitive disadvantage in terms of our ability to raise additional capital to fund our operations, limit our ability to react to changes in the economy or our industry, and prevent us from meeting our debt obligations compared to our competitors that are less leveraged.
This could have negative consequences that include:
increased vulnerability to adverse economic, industry, or competitive developments;
cash flows from operations that are committed to payment of principal and interest, thereby reducing our ability to use cash for our operations, capital expenditures, and future business opportunities;
increased interest rates that would affect our variable rate debt;
potential noncompliance with financial covenants, borrowing conditions, and other debt obligations (where applicable);
lack of financing for working capital, capital expenditures, product development, debt service requirements, and general corporate or other purposes; and
limits on our flexibility to plan for, or react to, changes in our business, market conditions, or in the economy.

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Our debt agreements contain restrictions that limit our flexibility in operating our business.
As detailed in Note 1615 to the consolidated financial statements, included in Part II, Item 8 of this Annual Report, our 2017 Debt Agreement requires compliancewe must comply with various affirmative, negative, and financial covenants. A breach of any of these covenants could result in default or (when applicable) cross-default. Upon default under our 2017 Debt Agreement,primary credit facility, the lenders could elect to declare all outstanding amounts to be immediately due and payable, as well as terminate all commitments to extend further credit. Such actions by those lenders could cause cross-defaults with our other debt agreements. If we were unable to repay those amounts, the lenders could use the collateral granted to satisfy all or part of the debt owed to them. If the lenders accelerated our debt repayments, we might not have sufficient assets to repay all amounts borrowed.
In addition, our 2018 RSAwe have other financing that includes certain affirmative and negative covenants and cross-default provisions with respect to our 2017 Debt Agreement.provisions. Failure to comply with these covenants and provisions may jeopardize our ability to continue to sell receivables under the facility and could negatively impact our liquidity.
Uncertainty from the expected discontinuance of LIBOR and transition to any other interest rate benchmark may materially and adversely affect our cost of capital.
In July 2017, the U.K. Financial Conduct Authority announced that it intends to stop persuading or compelling banks to submit LIBOR rates after 2021, which is expected to result in these widely used reference rates no longer being available after 2021. LIBOR is the reference rate used by our 2017 Debt Agreement and 2018 RSA. Potential changes to LIBOR, as well as uncertainty related to such potential changes and the establishment of any alternative reference rate, may materially and adversely affect our cost of capital and may require us to renegotiate our existing indebtedness or negatively impact the terms of such indebtedness, which could have a material adverse effect on our business, results of operations, financial condition, and liquidity. At this time, we cannot predict the overall effect of the modification or discontinuation of LIBOR or the establishment of any alternative benchmark rate.
We could determine that our goodwill and other indefinite-lived intangibles are impaired, thus recognizing a related impairment loss.
As of December 31, 2019, we hadWe have goodwill of $2.9 billion and indefinite-lived intangible assets on our balance sheet. Given our history of $639.9 million primarily from the 2017 Merger.acquisitions and growth objectives, our goodwill and intangible assets could grow. We periodically evaluate our goodwill and indefinite-lived intangible assets for impairment. We could recognize impairments in the future, and we may never realize the full value of our intangible assets. If these events occur, our profitability and financial condition will suffer.
32



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
If our investments in entities are not successful or decrease in market value, we may be required to write off or lose the value of a portion or all of our investments, which could have a materially adverse effect on our results of operations.
Through one of our wholly-owned subsidiaries, we have directly or indirectly invested in certain entities that make privately negotiated equity investments. In the past, the Company has recorded impairment charges to reflect the other-than-temporary decreases in the fair value of its portfolio. If the financial position of any such entity declines, we could be required to write down all or part of our investment in that entity, which could have a materially adverse effect on our results of operations.
Jerry MoyesChanges in taxation could lead to an increase of our tax exposure and certaincould affect the Company’s financial results.
President Biden has provided some informal guidance on what federal tax law changes he supports, such as an increase in the corporate tax rate from its current top rate of his family members21%. If an increase in the corporate tax rate is passed by Congress and affiliated entities are significant stockholderssigned into law, it could have a materially adverse effect on our financial results and we face certain risks related to their significant ownership and related party transactions with Mr. Moyes.
As offinancial position. At December 31, 2019, Jerry Moyes, together with his family2021, the Company has a deferred tax liability of $874.9 million. The amount of deferred tax liability is determined by using the enacted tax rates in effect for the year in which differences between the financial statement and related entities, beneficially own approximately 23.9%tax basis of assets and liabilities are expected to reverse. Accordingly, our net current tax liability has been determined based on the currently enacted rate of 21%. If the current rate were increased due to legislation, it would have an immediate revaluation of our outstanding common stock. In addition, Mr. Moyes, together with his familydeferred tax assets and related entities (collectively, the "Moyes Parties"), have pledged a majority of their holdings as collateral for loans and other obligations, including variable prepaid forward contracts ("VPFs"), which arrangements could create conflicts of interest and adversely affect or increase volatilityliabilities in the market priceyear of our common stock. Mr. Moyes resignedenactment. For example, an increase in the tax rate from the Board on December 21, 2018. While our stock hedging and pledging policy continues21% to apply to Mr. Moyes, we may be unable to enforce, against the Moyes Parties, this policy because Mr. Moyes no longer serves as a director. This policy restricts directors, executive officers, and certain Moyes and Knight family holders from engaging in any future pledging or hedging transactions. The ability of the Moyes Parties to hedge and pledge shares without being restricted under such policy could26% would result in the pledging or hedgingimmediate increase in our net deferred tax liability of approximately $174.4 million, with a material amount of additional shares. If the Moyes Parties werecorresponding increase to sell or otherwise transfer all or a large percentage of their holdings (including under circumstances in which they settle these

36



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

obligations with shares of our common stock or if they default under the pledging arrangements), the market price of our common stock could decline or be volatile.
According to Schedules 13D/A filed with the SEC by the Moyes Parties, there are approximately 29.5 million shares of our common stock underlying the Moyes Parties’ VPFs. The Moyes Parties have entered into a Trigger Price Agreement related to the VPFs. This Trigger Price Agreement requires the Moyes Parties to make certain cash payments if the price of our common stock exceeds a certain trigger price (the last trigger price disclosed by the Moyes Parties was $39.53) and provides that the VPFs can be terminated if the price of our common stock exceeds a certain early termination price (the last early termination price disclosed by the Moyes Parties was $41.70). Based on the entry into this Trigger Price Agreement, we believe that there is an increased likelihood of default on the VPFs during 2020. Additionally, the maturity dates of the VPFs range from March 2020 to July 2020 and the floor prices on the VPFs range from $43.20 to $45.50. Given the current market price of our common stock, we believe there is an increased likelihood that, at the maturity of the VPFs, the Moyes Parties will need to (i) pay a large sum of cash or pledge additional shares of our common stock to extend the VPFs, (ii) cash settle the VPFs, or (iii) share settle the VPFs. According to a Schedule 13D/A filed with the SEC by the Moyes Parties, the counterparty to the VPFs indicated thatincome tax expense in the eventyear of enactment to reflect the VPFs are terminated as a result of a default and are not cash settled, (i) the counterparty’s short position would already be equal or nearly equal to the number of shares underlying the VPFs and pledged as collateral thereunder; and (ii) the counterparty would intend to foreclose on the shares of common stock pledged and use such shares to close out its short positions by delivering such shares to the applicable stock lenders (in lieu of selling such shares on the open market). We have no way of verifying the accuracy of these statements or whether they continue to be accurate. Additionally, these statements do not discuss the intention of the counterparty if the VPFs are share settled at maturity. Accordingly, it is difficult to determine the impact of a foreclosure or share settlement of the VPFs on the market price of our common stock. We do not believe there are any contractual obligations of the counterparty that would prevent it from selling a large number of shares in the open market in the event of a foreclosure or share settlement of the VPFs. Any sale of such shares could cause the market price of our common stock to decline or be volatile.
We believe Mr. Moyes has given personal guarantees to lenders to the various businesses and real estate investments in which he has an ownership interest and, in certain cases, the underlying loans are in default and are in the process of being restructured and/or settled. If Mr. Moyes is otherwise unable to settle or raise the necessary amount of proceeds to satisfy his obligations to such lenders, he may be subject to significant lawsuits and expose his shares of our common stock to creditors.
Mr. Moyes has access to our Executive Chairman and Vice Chairman, and is better positioned than other stockholders to express his views and opinions regarding our operations and strategic alternatives.
Mr. Moyes and certain of his family members and affiliated entities are contractually obligated to vote shares of our common stock that they hold in excess of 12.5% of our outstanding shares in the manner determined by a voting committee comprised of Mr. Moyes, Kevin Knight, and Gary Knight or their respective appointed successors. However, Mr. Moyes and certain of his family members and affiliated entities are entitled to vote all of their shares of our common stock on any stockholder vote taken to approve a sale of the Company. Consequently, their influence with respect to any such stockholder vote may have the effect of delaying or preventing a change of control, including a merger, consolidation, or other business combination involving us, or discouraging a potential acquirer from making a tender offer or otherwise attempting to obtain control, even if that change of control would benefit our other stockholders.
We engage in various transactions with entities controlled by and/or affiliated with Mr. Moyes. Additionally, some entities controlled by Mr. Moyes and certain members of his family operate in the transportation industry, which may create conflicts of interest or require judgments that are disadvantageous to our stockholders in the event we compete for the same freight or other business opportunities. As a result, Mr. Moyes may have interests that conflict with our stockholders.
Additionally, our amended and restated certificate of incorporation contains provisions that specifically relate to prior approval of related party transactions with Mr. Moyes and certain Moyes-affiliated entities. However, we cannot assure that the policy or these provisions will be successful in eliminating conflicts of interest.
The market price of our common stock may be volatile.
The price of our common stock may fluctuate widely, depending upon a number of factors, many of which are beyond our control. These factors include, among other items: the perceived prospects of our business and our industry as a whole; differences between our actual financial and operating results as compared to those expected by investors and

37



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

analysts; changes in analysts’ recommendations or projections (including such analysts’ outlook on our industry as a whole); actions or announcements by our competitors; changes in the regulatory environment in which we operate; significant sales or hedging of shares by a principal stockholder; actions taken by stockholders that may be contrary to the Board’s recommendations; and changes in general economic or market conditions. In addition, stock markets generally experience significant price and volume volatility from time to time which may adversely affect the market price of our common stock for reasons unrelated to our performance.
The market price of our common stock could decline due to the large number of outstanding shares of our common stock eligible for future sale.
Sales of substantial amounts of our common stock in the public market, or the perception that these sales could occur, could cause the market price of our common stock to decline. All shares of our outstanding common stock are freely tradable, except that any shares owned by "affiliates" (as that term is defined in Rule 144 under the Securities Act) may only be sold in compliance with the limitations described in Rule 144 under the Securities Act. These sales also could make it more difficult for us to sell equity or equity-related securities in the future at a time and price that we deem appropriate.revaluation.
In addition, we have an aggregate of 2.9 million shares of common stock reserved for issuance under our compensatory and non-compensatory equity incentive plans. Issuances of common stock to our directors, executive officers, and employees through exercise of stock options under our compensatory stock plans, or purchases by our executive officers and employees through our 2012 ESPP, dilute a stockholder's interest in the Company.
We may not pay dividends in the future.
Starting in December 2004, and in each consecutive quarter prior to the 2017 Merger, Knight paid a quarterly cash dividend. Prior to the 2017 Merger, Swift did not pay dividends. While it is expected we will continue to pay a quarterly dividend, there is no assurance that we will declare or pay any future dividends or as to the amount or timing of those dividends, if any.

ITEM 1B.UNRESOLVED STAFF COMMENTS
None.

38



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

ITEM 2.PROPERTIES
Our Knight and Swift headquarters are both located in Phoenix, Arizona. Including Knight's former headquarters location, which was re-purposed as a regional operations facility, our combined headquarters cover approximately 200 acres, consisting of about 300 thousand square feet of office space, 150 thousand square feet of repair and maintenance facilities, a twenty thousand square-foot driving associates' center and restaurant, an eight thousand square-foot recruiting and training center, a six thousand square-foot warehouse, a 300-space parking structure, as well as two truck wash and fueling facilities.
We have over 90210 locations in the US and Mexico, including our headquarters, terminals, driving academies, and certain other locations, which are included in the table below. Our terminals may include customer service, marketing, fuel, and/or repair facilities, which are used by our Trucking,Truckload, Logistics, LTL, Intermodal, and non-reportable segments. We also own or lease parcels of vacant land, drop yards, and space for temporary trailer storage for ourselves and other carriers, as well as several non-operating facilities, which are excluded from the table below. As of December 31, 2019,2021, our aggregate monthly rent for all leased properties was approximately $0.7$1.8 million with varying terms expiring through December 2053.2053. We believe that substantially all of our property and equipment is in good condition and our facilities have sufficient capacity to meet our current needs.
  Owned/Leased Brand  
Location Owned  Leased Knight Swift Barr Nunn Abilene Total
Arizona 4 2 4 2 
 
 6
Arkansas 1 
       1 1
California 8 2 3 7 
 
 10
Colorado 2 
 1 1 
 
 2
Florida 2 
 1 1 
 
 2
Georgia 2 2 1 3 
 
 4
Idaho 1 2 2 1 
 
 3
Illinois 1 
 
 1 
 
 1
Indiana 2 
 1 1 
 
 2
Iowa 2 
 
 
 2 
 2
Kansas 2 
 1 1 
 
 2
Massachusetts 
 1 
 1 
 
 1
Mexico 4 6 
 10 
 
 10
Michigan 1 1 1 1 
 
 2
Minnesota 1 
 
 1 
 
 1
Mississippi 2 
 2 
 
 
 2
Missouri 1 
 
 1 
 
 1
Nevada 2 
 1 1 
 
 2
New Jersey 1 
 
 1 
 
 1
New Mexico 1 
 
 1 
 
 1
New York 3 1 
 4 
 
 4
North Carolina 2 1 1 1 1 
 3
Ohio 2 
 1 1 
 
 2
Oklahoma 1 
 1 
 
 
 1
Oregon 2 
 1 1 
 
 2
Pennsylvania 2 4 1 4 1 
 6
South Carolina 2 
 
 2 
 
 2
South Dakota 
 1 1 
 
 
 1
Tennessee 3 
 1 2 
 
 3
Texas 7 1 3 5 
 
 8
Utah 2 
 1 1 
 
 2
Virginia 2 2 
 1 
 3 4
Washington 2 
 1 1 
 
 2
West Virginia 1 
 
 1 
 
 1
Wisconsin 1 
 
 1 
 
 1
Total Properties 72 26 30 60 4 4 98
               

The following listing shows our logos with our corresponding company descriptions, as the logos are used to depict brand representation by location in the accompanying table:
39
33



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

ITEM 3.LogoLEGAL PROCEEDINGSBrand
knx-20211231_g2.gif
Knight
knx-20211231_g3.gif
Swift
knx-20211231_g4.gif
ACT
knx-20211231_g5.gif
MME
knx-20211231_g6.gif
Barr-Nunn Transportation LLC
knx-20211231_g7.gif
Abilene Motor Express, LLC
34



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
Owned/Leased
LocationBrandOwned LeasedTotal
Alabama
knx-20211231_g4.gif
66
Arizona
knx-20211231_g2.gif
knx-20211231_g3.gif
10414
Arkansas
knx-20211231_g4.gif
knx-20211231_g7.gif
314
California
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g7.gif
9211
Colorado
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g5.gif
213
Florida
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g4.gif
1515
Georgia
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g4.gif
knx-20211231_g7.gif
12315
Idaho
knx-20211231_g2.gif
knx-20211231_g3.gif
224
Illinois
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g4.gif
628
Indiana
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g4.gif
224
Iowa
knx-20211231_g5.gif
knx-20211231_g6.gif
112
Kansas
knx-20211231_g2.gif
knx-20211231_g3.gif
213
Kentucky
knx-20211231_g4.gif
213
Louisiana
knx-20211231_g4.gif
66
Massachusetts
knx-20211231_g3.gif
11
Mexico
knx-20211231_g3.gif
4610
Michigan
knx-20211231_g3.gif
11
Minnesota
knx-20211231_g3.gif
knx-20211231_g5.gif
112
Mississippi
knx-20211231_g2.gif
knx-20211231_g4.gif
66
Missouri
knx-20211231_g3.gif
22
Montana
knx-20211231_g5.gif
11
Nevada
knx-20211231_g2.gif
knx-20211231_g3.gif
415
New Jersey
knx-20211231_g3.gif
11
New Mexico
knx-20211231_g3.gif
11
New York
knx-20211231_g3.gif
33
North Carolina
knx-20211231_g2.gif
knx-20211231_g4.gif
knx-20211231_g6.gif
99
North Dakota
knx-20211231_g5.gif
55
Ohio
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g6.gif
213
Oklahoma
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g4.gif
44
Oregon
knx-20211231_g2.gif
knx-20211231_g3.gif
22
Pennsylvania
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g6.gif
224
South Carolina
knx-20211231_g3.gif
knx-20211231_g4.gif
538
South Dakota
knx-20211231_g2.gif
11
Tennessee
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g4.gif
1010
Texas
knx-20211231_g2.gif
knx-20211231_g3.gif
knx-20211231_g4.gif
181129
Utah
knx-20211231_g2.gif
knx-20211231_g3.gif
33
Virginia
knx-20211231_g3.gif
knx-20211231_g7.gif
213
Washington
knx-20211231_g2.gif
knx-20211231_g3.gif
22
West Virginia
knx-20211231_g3.gif
11
Wisconsin
knx-20211231_g3.gif
knx-20211231_g5.gif
112
Wyoming
knx-20211231_g5.gif
11
Total Properties16454218
35



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
ITEM 3.LEGAL PROCEEDINGS
We are party to certain lawsuits in the ordinary course of business. Information about our legal proceedings is included in Note 19 in Part II, Item 8 of this Annual Report and is incorporated by reference herein. Based on management's present knowledge of the facts and (in certain cases) advice of outside counsel, management does not believe that loss contingencies arising from pending matters are likely to have a material adverse effect on the Company's overall financial position, operating results, or cash flows after taking into account any existing accruals. However, actual outcomes could be material to the Company's financial position, operating results, or cash flows for any particular period.
ITEM 4.MINE SAFETY DISCLOSURES
Not applicable.

40



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

PART IIITEM 4.MINE SAFETY DISCLOSURES
Not applicable.
PART II
ITEM 5.MARKET FOR THE REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES
Common Stock
Share prices and dividends are different than the amounts disclosed in our selected financial data in Item 6 and in our consolidated financial statements in Item 8 due to the distinction between legal and accounting acquirer as a result of the reverse merger acquisition with Knight. The information prior to the merger date of September 8, 2017 in Item 5 represents historical Swift amounts as Swift was the legal acquirer.
Our common stock trades on the NYSE under the symbol "KNX". Prior to the completion of the 2017 Merger, shares of Swift Class A common stock traded on the NYSE under the symbol "SWFT" while shares of Knight common stock traded on the NYSE under the symbol "KNX."
Common Stock — As of December 31, 2019,2021, we had 170,687,569165,980,401 shares of common stock outstanding. On February 18, 2020,15, 2022, there were 3537 holders of record of our common stock. Because many of our shares of common stock are held by brokers or other institutions on behalf of stockholders, we are unable to estimate the total number of individual stockholders represented by the record holders.
Dividend Policy
Prior to the 2017 Merger, Swift did not pay dividends. Following the 2017 Merger, weWe have paid a quarterly cash dividend consistent with Knight's historical practice that started inas Knight-Swift since December 2004, and that continued in consecutive quarters since prior to the 2017 Merger.27, 2017.
Our most recent dividend was declared in February of 20202022 for $0.08$0.12 per share of common stock and is scheduled to be paid in March of 2020, which is a $0.02 increase from the Company's historical quarterly dividend of $0.06 per share of common stock.2022.
We currently expect to continue to pay comparable quarterly cash dividends in the future. Future payment of cash dividends, and the amount of any such dividends, will depend upon our financial condition, results of operations, cash requirements, tax treatment, and certain corporate law requirements, as well as other factors deemed relevant by our Board.
Purchases of Equity Securities by the Issuer and Affiliated Purchasers
The following table shows our purchases of our common stock and the remaining amounts we are authorized to repurchase for each monthly period in the fourth quarter of 2019.2021.
PeriodTotal Number of Shares PurchasedAverage Price Paid per ShareTotal Number of Shares Purchased as Part of Publicly Announced Plans or Programs
Approximate Dollar Value That May Yet be Purchased Under the Plans or Programs 1
October 1, 2021 to October 31, 202173,504 $47.80 73,504 $192,825,134 
November 1, 2121 to November 30, 2021— $— — $192,825,134 
December 1, 2021 to December 31, 2021— $— — $192,825,134 
Total73,504 $47.80 73,504 $192,825,134 
1On November 30, 2020, we announced that the Board approved the $250.0 million 2020 Knight-Swift Share Repurchase Plan, replacing the 2019 Knight-Swift Share Repurchase Plan. There is no expiration date associated with this share repurchase authorization. See Note 20 in Part II, Item 8 of this Annual Report.
36
PeriodTotal Number of Shares Purchased Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Approximate Dollar Value That May Yet be Purchased Under the Plans or Programs¹
October 1, 2019 to October 31, 2019
 $
 
 $233,607,968
November 1, 2019 to November 30, 2019
 $
 
 $233,607,968
December 1, 2019 to December 31, 2019
 $
 
 $233,607,968
Total
 $
 
 $233,607,968
        
1On May 31, 2019, we announced that the Board approved the $250.0 million 2019 Knight-Swift Share Repurchase Plan, replacing the 2018 Knight-Swift Share Repurchase Plan. There is no expiration date associated with this share repurchase authorization. See Note 20 in Part II, Item 8 of this Annual Report.

41



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

Stockholders Return Performance Graph
The following graph compares the cumulative annual total return of stockholders from December 31, 20142016 to December 31, 20192021 of our stock relative to the cumulative total returns of the NYSE Composite index and an index of other companies within the trucking industry (NASDAQ Trucking & Transportation) over the same period. The graph assumes that the value of the investment in Swift's common stock and in each of the indexes (including reinvestment of dividends) was $100 on December 31, 2014,2016, and tracks it through December 31, 2019.2021. The stock price performance included in this graph is not necessarily indicative of Knight-Swift's future stock price performance.
Note: The below investment in Knight-Swift Transportation Holdings Inc. was calculated using Swift's historical stock price (SWFT), adjusted for the reverse split of 0.72, for periods prior to the 2017 Merger and calculated using Knight-Swift Transportation Holdings Inc.'s historical stock price (KNX) for periods following the 2017 Merger.
chart-442b3052d3585aeaab6.jpgknx-20211231_g8.jpg
December 31,
201620172018201920202021
Knight-Swift Transportation Holdings Inc.$100.00 $129.40 $74.67 $107.53 $126.49 $185.72 
NYSE Composite100.00 118.73 108.10 135.68 145.16 175.18 
NASDAQ Trucking & Transportation100.00 123.35 110.84 133.75 137.58 165.72 
ITEM 6.RESERVED
37
 December 31,
 2014 2015 2016 2017 2018 2019
Knight-Swift Transportation Holdings Inc.$100.00
 $48.27
 $85.09
 $110.10
 $63.53
 $91.49
NYSE Composite100.00
 95.91
 107.36
 127.46
 116.06
 145.66
NASDAQ Trucking & Transportation100.00
 86.61
 104.22
 128.89
 117.83
 137.84

42



KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

ITEM 6.SELECTED FINANCIAL DATA
The information presented below is derived from our audited consolidated financial statements, included elsewhere in this report, except for 2015 and 2016, which were previously reported. Due to the "reverse acquisition" nature of the 2017 Merger, the historical financial statements of legacy Knight have replaced the historical financial statements of legacy Swift. In management's opinion, all necessary adjustments for the fair presentation of the information outlined in these financial statements have been applied. The selected financial data for 2019, 2018, and 2017 should be read alongside the consolidated financial statements and accompanying footnotes in Part II, Item 8 of this Annual Report.
Note: Factors that materially affect the comparability of the data for 2017 through 2019 are discussed in Part II, Item 7 of this Annual Report. Factors that materially affect the comparability of the selected financial data for 2015 and 2016 are set forth below the table.
The following table highlights key measures of the Company's financial condition and results of operations (dollars in thousands, except per share amounts and operating data):
Consolidated statement of comprehensive income GAAP data ¹:2019 2018 2017 2016 2015
Total revenue$4,843,950
 $5,344,066
 $2,425,453
 $1,118,034
 $1,182,964
Total operating expenses4,416,512
 4,775,023
 2,224,823
 969,555
 1,004,964
Operating income427,438
 569,043
 200,630
 148,479
 178,000
Interest income and other income15,971
 13,165
 1,765
 5,248
 9,502
Interest expense(29,433) (30,170) (8,686) (897) (998)
Income before income taxes413,976
 552,038
 193,709
 152,830
 186,504
Net income310,178
 420,649
 485,425
 95,238
 118,457
Net income attributable to Knight-Swift309,206
 419,264
 484,292
 93,863
 116,718
Basic earnings per share1.80
 2.37
 4.38
 1.17
 1.43
Earnings per diluted share1.80
 2.36
 4.34
 1.16
 1.42
Cash dividend per share of common stock0.24
 0.24
 0.24
 0.24
 0.24
Operating ratio ²91.2% 89.4% 91.7% 86.7% 85.0%
 December 31,
Consolidated balance sheet GAAP data ¹:2019 2018 2017 2016 2015
Working capital (deficit) surplus ³$(103,010) $292,669
 $313,657
 $111,541
 $164,090
Total assets8,281,732
 7,911,885
 7,683,442
 1,078,525
 1,120,232
Total debt 4
918,796
 929,116
 970,905
 18,000
 112,000
Total Knight-Swift stockholders' equity5,666,215
 5,460,949
 5,237,732
 786,473
 738,398
Non-GAAP financial data (unaudited) ¹:2019 2018 2017 2016 2015
Adjusted Net Income Attributable to Knight-Swift 5
$373,082
 $456,070
 $154,565
 $95,373
 $121,113
Adjusted EPS 5
2.17
 2.56
 1.38
 1.17
 1.47
Adjusted Operating Ratio 5 (recast)
88.4% 87.2% 88.4% 85.3% 82.6%
Operating data (unaudited) 1 6:
2019 2018 (recast) 2017 (recast) 2016 2015
Average revenue per tractor$185,628
 $196,064
 $184,907
 $172,185
 $173,329
Average length of haul (miles)430
 421
 441
 498
 503
Non-paid empty miles percentage12.8% 12.8% 12.6% 12.5% 12.0%
Average tractors (Trucking segment only)18,877
 19,155
 20,138
 4,706
 4,793
Average trailers58,315
 61,723
 64,641
 12,288
 11,789
Average containers9,862
 9,330
 9,122
 
 
1Data after September 8, 2017 includes the results of Swift, pursuant to the 2017 Merger. Data after March 16, 2018 includes the results of Abilene pursuant to the Abilene Acquisition.
2Total operating expenses expressed as a percentage of total revenue.
3Working capital is in a deficit position as of December 31, 2019, as our Term Loan is scheduled to mature on October 2, 2020. The Company intends to refinance prior to maturity.
4Includes carrying value of current and noncurrent portions of term loan debt, revolving credit facilities, receivables sales agreement, and finance/capital leases. For more discussion refer to "Liquidity and Capital Resources" in Part II, Item 7 of this Annual Report.
5Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, and Adjusted Operating Ratio, are non-GAAP financial measures. These non-GAAP financial measures should not be considered alternatives to, or superior to, GAAP financial measures. However, management believes that presentation of these non-GAAP financial measures provides useful information to investors regarding the Company's results of operations. Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, and Adjusted Operating Ratio are reconciled to the most directly comparable GAAP financial measures in "Non-GAAP Financial Measures" in Part II, Item 7 of this Annual Report. The Adjusted Operating Ratio for 2018 and 2017 is recast to adjust "Total revenue" and "Total operating expenses" by fuel surcharges generated within the Trucking segment only.
6See "Results of Operations — Segment Review — Operating Statistics" in Part II, Item 7 of this Annual Report regarding definitions of these operating data.

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

ITEM 7.MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Certain acronyms and terms used throughout this Annual Report are specific to our company, commonly used in our industry, or are otherwise frequently used throughout our document. Definitions for these acronyms and terms are provided in the "Glossary of Terms," available in the front of this document.
Management's discussion and analysis of financial condition and results of operations should be read together with "Business" in Part I, Item 1 of this Annual Report, as well as the consolidated financial statements and accompanying footnotes in Part II, Item 8 of this Annual Report. This discussion contains forward-looking statements as a result of many factors, including those set forth under Part I, Item 1A. "Risk Factors" and Part I "Cautionary Note Regarding Forward-looking Statements" of this Annual Report, and elsewhere in this report. These statements are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ materially from those discussed.
Executive Summary
Company Overview
Knight-Swift Transportation Holdings Inc. is one of North America's largest and most diversified freight transportation companies, providing multiple full truckload, carrier and a provider of transportation solutions, headquartered in Phoenix, Arizona. The Company provides multiple truckload transportation,LTL, intermodal, and logistics services usingservices. Knight-Swift uses a nationwide network of business units and terminals in the US and Mexico to serve customers throughout North America. In addition to itsoperating one of the country's largest truckload services,fleets, Knight-Swift also contracts with third-party capacityequipment providers to provide a broad range of shipping solutionstransportation services to itsour customers while creating quality driving jobs for our driving associates and successful business opportunities for independent contractors. Our threefour reportable segments are Trucking,Truckload, Logistics, LTL, and Intermodal. Additionally, we have various non-reportable segments. Refer to Note 1 and Note 25 in Part II, Item 8 of this Annual Report for descriptions of our segments.
Our objective is to operate our business with industry-leading margins and growth while providing safe, high-quality, cost-effective solutions for our customers.
2017 Merger —On September 8, 2017, we became Knight-Swift Transportation Holdings Inc. upon the effectiveness of the 2017 Merger. Immediately upon the consummation of the 2017 Merger, former Knight stockholders We continue to grow our company organically and former Swift stockholders owned approximately 46.0% and 54.0%, respectively, of the Company. Upon closing of the 2017 Merger, the shares of Knight common stock that previously traded under the ticker symbol "KNX" ceased trading and were delisted from the NYSE. Our shares of Class A common stock commenced trading on the NYSE on a post-reverse split basis under the ticker symbol "KNX" on September 11, 2017.
We accounted for the 2017 Merger using the acquisition method of accounting in accordance with GAAP. GAAP requires that either Knight or Swift is designated as the acquirer for accounting and financial reporting purposes ("Accounting Acquirer"). Based on the evidence available, Knight was designated as the Accounting Acquirer while Swift was the acquirer for legal purposes. Therefore, Knight’s historical results of operations replaced Swift’s historical results of operations for all periods prior to the 2017 Merger. More specifically, for periods prior to the 2017 Merger, the consolidated financial statements in Part II, Item 8 of this Annual Report are those of Knight and its subsidiaries and do not include Swift, and for periods subsequent to the 2017 Merger, also include Swift. Accordingly, comparisons between our 2017 results and prior periods may not be meaningful.
Abilene Acquisition — On March 16, 2018, the Company acquired all of the issued and outstanding equity interests of Abilene. Please referthrough acquisitions. Refer to Note 51 and Note 4 in Part II, Item 8 of this Annual Report for more information about the Abilene Acquisition.details regarding our recent acquisitions.
Other Acquisition — On January 1, 2020, the Company acquired a small company to complement its suite of services. Please refer to Note 5 in Part II, Item 8 of this Annual Report.

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Revenue
Our truckingtruckload services include irregular route and dedicated, refrigerated, expedited, flatbed, and cross-border transportation of various products, goods, and materials for our diverse customer base. We primarily generate revenue by transporting freight for our customers through our TruckingTruckload segment.
Our brokeragelogistics and intermodal operations provide a multitude of shipping solutions, including additional sources of truckload capacity and alternative transportation modes, by utilizing our vast network of third-party capacity providers and rail providers, as well as certain logistics and freight management services. Revenue in our brokerage and intermodal operations is generated through our Logistics and Intermodal segments.
Our LTL business, established in 2021 through the ACT and MME acquisitions, provides our customers regional LTL transportation service through our network of approximately 100 service centers in our geographical footprint. Our LTL service also provides national coverage to our customers by utilizing partner carriers for areas outside of our direct network.
Our non-reportable segments includeIron Truck Services, (which offers support services provided to our customers and independent contractors (includingincluding repair and maintenance shop services, equipment leasing, warranty services, and insurance), trailer parts manufacturing, warehousing, and certain driving academy activities, as well as certain corporate expenses (such as legal settlements and accruals, certain impairments, and amortization of intangibles related to the 2017 Merger and certainvarious acquisitions).
In addition to the revenues earned from our customers for the trucking and non-trucking services discussed above, we also earn fuel surcharge revenue from our customers through our fuel surcharge program, which serves to recover a majority of our fuel costs. This applies only to loaded miles and typically does not offset non-paid empty miles, idle time, and out-of-route miles driven. Fuel surcharge programs involve a computation based on the change in national or regional fuel prices. These programs may update as often as weekly, but typically require a specified minimum change in fuel cost to prompt a change in fuel surcharge revenue.
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Therefore, many of these programs have a time lag between when fuel costs change and when the change is reflected in fuel surcharge revenue for our Trucking segment.Truckload and LTL segments.
Expenses — Our most significant expenses vary with miles traveled and include fuel, driving associate-related expenses (such as wages and benefits), and services purchased from independent contractors and other transportation providers (such as railroads, drayage providers, and other trucking companies). Maintenance and tire expenses, as well as the cost of insurance and claims generally vary with the miles we travel, but also have a controllable component based on safety improvements, fleet age, efficiency, and other factors. Our primary fixed costs are depreciation and lease expense for revenue equipment and terminals, amortization of intangibles, interest expense, and non-driver employee compensation.
Operating Statistics — We measure our consolidated and segment results through certain operating statistics, which are discussed under "Results of Operations — Segment Review — Operating Statistics," below.
Our results are affected by various economic, industry, operational, regulatory, and other factors, which are discussed in detail in "Part I, Item 1A. Risk Factors," as well as in various disclosures in our press releases, stockholder reports, and other filings with the SEC.

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Key Financial Highlights and Operating Metrics
 2019 2018 2017
GAAP Financial data:(Dollars in thousands, except per share data)
Total revenue$4,843,950
 $5,344,066
 $2,425,453
Revenue, excluding trucking fuel surcharge$4,395,332
 $4,809,668
 $2,199,483
Net income attributable to Knight-Swift$309,206
 $419,264
 $484,292
Diluted EPS$1.80
 $2.36
 $4.34
Operating ratio91.2% 89.4% 91.7%
      
Non-GAAP financial data:     
Adjusted Net Income Attributable to Knight-Swift ¹$373,082
 $456,070
 $154,565
Adjusted EPS ¹$2.17
 $2.56
 $1.38
Adjusted Operating Ratio (2017 and 2018 Recast) ¹88.4% 87.2% 88.4%
      
Revenue equipment: ²     
Average tractors (Trucking segment only) ³18,877
 19,155
 20,138
Average trailers 4
58,315
 61,723
 64,641
Average containers9,862
 9,330
 9,122
1
Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, and Adjusted Operating Ratio are non-GAAP financial measures and should not be considered alternatives, or superior, to the most directly comparable GAAP financial measures. However, management believes that presentation of these non-GAAP financial measures provides useful information to investors regarding the Company's results of operations. Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, and Adjusted Operating Ratio are reconciled to the most directly comparable GAAP financial measures under "Non-GAAP Financial Measures," below. The Adjusted Operating Ratio for 2018 and 2017 is recast to adjust "Total revenue" and "Total operating expenses" by fuel surcharges generated within the Trucking segment only.
2See "Results of Operations — Segment Review — Operating Statistics" in Part II, Item 7 of this Annual Report regarding definitions of these operating data.
3
Our tractor fleet had a weighted average age of 1.9 years, 2.2 years, and 2.5 years for 2019, 2018, and 2017, respectively. Average tractors within our Trucking segment includes 16,432, 15,743 and 15,916 company-owned tractors for 2019. 2018, and 2017, respectively.
4
Our trailer fleet had a weighted average age of 7.5 years, 7.2 years, and 7.6 years for 2019, 2018, and 2017, respectively.
Market Trends and Company Performance
20212020
GAAP financial data:(Dollars in thousands, except per share data)
Total revenue$5,998,019 $4,673,863 
Revenue, excluding truckload and LTL fuel surcharge$5,531,890 $4,369,207 
Net income attributable to Knight-Swift$743,388 $410,002 
Diluted EPS$4.45 $2.40 
Operating ratio83.9 %87.9 %
Non-GAAP financial data:
Adjusted Net Income Attributable to Knight-Swift 1
$788,181 $466,147 
Adjusted EPS 1
$4.72 $2.73 
Adjusted Operating Ratio 1
81.5 %85.3 %
Revenue equipment statistics by segment: 2
Truckload
Average tractors 3
18,019 18,448 
Average trailers 4
67,606 57,722 
LTL
Average tractors 5
2,735 N/A
Average trailers 6
7,413 N/A
Intermodal
Average containers10,847 10,604 
Trends1Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, and Outlook Adjusted Operating Ratio are non-GAAP financial measures and should not be considered alternatives, or superior, to the most directly comparable GAAP financial measures. However, management believes that presentation of these non-GAAP financial measures provides useful information to investors regarding the Company's results of operations. Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, and Adjusted Operating Ratio are reconciled to the most directly comparable GAAP financial measures under "Non-GAAP Financial Measures," below.
2See "Results of Operations Segment Review — Operating Statistics" in Part II, Item 7 of this Annual Report regarding definitions of these operating data.
3AsOur Truckload tractor fleet had a resultweighted average age of strong market fundamentals in 2018, capacity increased in the market as tractor orders were at record levels2.5 years and trucking employment began to grow. This resulted in an oversupply of capacity in the market, which led to lower spot market rates2.2 years for 2021 and downward pressure on contract rates in 2019. While the truckload freight environment remains competitive, evidence of capacity rationalization is mounting, including impacts from trucking company business failures, lower Class 8 new truck orders, further weakening of Class 8 used tractor values,2020, respectively. Average tractors within our Truckload segment includes 16,166 and 16,379 growing Class 8 used inventories,company-owned tractors for 2021 and contraction in trucking employment. Capacity rationalization may further accelerate given the mild freight seasonality that is typical in the first quarter, significant insurance cost inflation, and the new regulatory introduction of the commercial driver's license Drug and Alcohol Clearinghouse, which we believe will foster a more favorable freight environment in the second half of 2020.2020, respectively.
Driver sourcing continues to be a headwind for the trucking industry, as among other market factors, the national unemployment rate remained low, ending the fourth quarter of 2019 at 3.5%. Additionally, increased competition for driving academy graduates and experienced hires, as well as increased safety regulations, continued to hamper driver sourcing efforts throughout the industry. The unemployment rate in 2020 is expected to remain below 4.0%.
The US economy grew at a moderate pace throughout the year, with an expected annualized growth rate of 2.3% in 2019. Third-party forecasts indicate that this trend will continue, resulting in an expected annualized growth rate of 2.2% in 2020. The fourth quarter 2019 US employment cost index rose 2.7% and 0.7% on a year-over-year and

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sequential basis,4Note that average trailers includes 6,388 trailers related to leasing activities recorded within our non-reportable segments in 2021. Our Truckload trailer fleet had a weighted average age of 8.4 years and 7.8 years for 2021 and 2020, respectively. The tight US labor market is expected to continue to remain inflationary, likely prompting employers to continue raising employee pay rates and improving benefits.
We continue generating meaningful free cash flow, further reducing debt5Our LTL tractor fleet had a weighted average age of 4.2 years for 2021.
6Our LTL trailer fleet had a weighted average age of 7.9 years for 2021.
Market Trends and lease obligations, focusing on the fundamentalsCompany Performance
Our Company Trends and Outlook During 2021, each reportable segment grew revenue while improving margins, leading to consolidated revenue growth of our business,26.6%, excluding truckload and identifying strategic opportunitiesLTL fuel surcharge. This contributed to propel our company forward into the coming years. While our consolidated operations showed progress and resilience in the first half of 2019, continued market pressures negatively affected our consolidated results in the second half of the year. Despite the soft freight market in 2019, revenue per loaded mile, excluding fuel surcharge and intersegment transactions increased by 0.9%, as compared to last year. We continued to experience increased competition in the intermodal market, which led to an 8.3% reduction in volume and 0.5% less revenue per load year-over-year. Operating ratio within the Logistics segment increased by 110 basis points and Adjusted Operating Ratio increased by 120 basis points year-over-year, despite a 19.0% decrease in total revenue. These factors resulted in a 24.9% decrease71.1% improvement in consolidated operating income to $965.7 million in 2021, as compared to $564.4 million last year. Net Income Attributable to Knight-Swift increased by 81.3% to $743.4 million.
Truckload —80.9% operating ratio within our Truckload segment for the year, a 380 basis point improvement, supported by continued year-over-year revenue growth, with six consecutive quarters of revenue growth year-over-year.
Logistics — 88.5% operating ratio within our Logistics segment this year. Load count grew by 51.5%, leading to a 118.8 % increase in revenue, excluding intersegment transactions.
LTL — 92.1% operating ratio, which includes the results of ACT, from July 5, 2021 through December 31, 2021, as well as the results of MME from December 6, 2021 through December 31, 2021. On a proforma annualized basis, the LTL segment represents approximately 14% of consolidated revenue, excluding truckload and LTL fuel surcharge.
Intermodal —90.8% operating ratio within our Intermodal segment, a 940 basis point improvement with year-over-year revenue growth of 17.2%.
We anticipate that depreciation and amortization expense will increase and rental expense will correspondingly decrease, as a percentage of revenue excluding truckingtruckload and LTL fuel surcharge, as we intend to purchase, rather than lease,enter into operating leases, for a majority of our revenue equipment in 2020. Additionally, we would expect purchased transportation expense to increase as a percentage of revenue excluding trucking fuel surcharge in the coming year, if we are successful in growing our logistics and intermodal businesses.2022. With significant tightening in the insurance markets, we may also experience changes in premiums, and retention limits, and excess coverage limits in the remainder of 2022. While fuel expense is generally offset by fuel surcharge revenue, our fuel expense, net of fuel surcharge revenue may increase in the future.
We expect that our acquisitions of ACT and MME will have a significant impact on future financial results, including an overall increase in operating revenues and expenses.
Market Trends and Outlook On a year-over-year basis, the US gross domestic product, which is the broadest measure of goods and services produced across the economy, increased by 5.7%1 in 2021, as compared to a 3.4%1 decrease in 2020. The year-over-year improvement was primarily driven by an increase in consumer spending, as the economic impacts of the pandemic began to subside and the economy showed signs of recovery. The national unemployment rate was 3.9%2 as of December 31, 2021, as compared to 6.7%2 as of December 31, 2020. Early estimates of the full-year 2021 US employment cost index indicate a year-over-year increase of 4.0%2 and a sequential increase of 1.0%2.
Overall,From a freight market perspective, we are encouraged by the continued strength in freight demand; however, demand may be difficult to predict for full-year 2022. Our expectations for the 2022 market include the following:
Within the full truckload and LTL markets, we expect strong demand and constrained capacity throughout the year.
Industry capacity expansion continues to be limited by manufacturing constraints.
Sourcing and retaining drivers will remain committedchallenging and lead to further improving long-term profitability as weadditional driver wage inflation.
Inflationary pressure on equipment, maintenance, labor and other cost items.
The above factors should continue to leverage opportunities across the Knight-Swift brands, efficiently deploy our assets, investsupport a favorable rate environment, which we expect will result in innovation, and advance our enterprise-wide efforts in safety and the driver experience, while maintaining a relentless focus on cost control. In this environment, we will continue to monitor the markets in order to evaluate acquisition candidates, share repurchase opportunities, and other opportunities that create valuedouble-digit full truckload contract rate increases.
Strong demand for our stockholders and further advance our long-term strategies.power-only opportunities.
NoteStrong used equipment market.
_________
1 bea.gov
2 bls.gov
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Notes regarding presentation: With the exceptionA discussion of items which were recast in association with our segment reorganization, a discussion in changes in our results of operations from 20172019 to 20182020 has been omitted from this Annual Report, but may be found in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of our 20182020 Annual Report filed with the SEC on February 28, 2019.25, 2021.
Note regarding comparability: TheIn accordance with accounting treatment applicable to each of our recent acquisitions, Knight-Swift's reported results do not include the operating results of operations of Swift and its subsidiaries on andthe acquired entities prior to the 2017 Merger, in accordance with the accounting treatment applicable to the transaction. Additionally, the reported results do not include the results of operations of Abilene on and prior to itsrespective acquisition by the Company on March 16, 2018 in accordance with the accounting treatment applicable to the transaction.dates. Accordingly, comparisons between the Company's 20192021 results and the prior periods presented may not be meaningful. Refer to Note 1 in Part II, Item 8 of this Annual Report for a list of our recent acquisitions.
Operating Results: 20192021 Compared to 20182020The $110.1$333.4 million decreaseincrease in net income attributable to Knight-Swift to $309.2$743.4 million in 20192021 from $419.3$410.0 million in 2018,2020, includes the following:
Contributor — $205.9 million increase in operating income within our Truckload segment driven by a 21.1% increase in revenue per loaded mile, excluding fuel surcharge and intersegment transactions, partially offset by a 10.3% decrease in total miles per tractor.$82.1 million decrease in operating income within our Trucking segment due to an oversupply of truckload capacity in the 2019 freight market. This resulted in fewer miles per tractor and a pressured rate per loaded mile which was unable to keep pace with inflationary costs. We also incurred incremental expenses associated with exiting several underperforming refrigerated and dry dedicated accounts in 2019.
Contributor —$26.8 million decrease in operating income within our Intermodal segment due to a reduction in volume from continued market pressures and relatively worse inclement weather at the onset of 2019, compared to 2018.
Contributor — $22.6 millionincrease in operating loss within the non-reportable segments in 2019. This was primarily due to the recognition of $35.8 million in 2019, in revised estimates for litigation related to various pre-2017 Merger legal matters which were previously disclosed by Swift. These costs were recorded in "Miscellaneous operating expenses" in the consolidated statements of comprehensive income.

Contributor — $73.7 million increase in operating income within our Logistics segment driven by a 51.5% increase in load counts, and a 44.4% increase in revenue per load.
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.Contributor — $17.7 million improvement in "Other income, net," primarily due to unrealized gains recognized from our investment in Embark and an increase in unrealized gains recognized from other investments within our portfolio.
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONSOffsetCONTINUED


Offset — $27.6 million decrease in consolidated income tax expense primarily due to a decrease in pretax earnings and a partial release of our reserve for uncertain tax positions recognized as a discrete item. This was partially offset by a decrease in foreign income tax deductions recognized as a discrete item. In 2018, we recognized discrete items related to stock compensation deductions and a favorable audit settlement of nondeductible penalties. All of these factors resulted in a 2019 effective tax rate of 25.1% and a 2018 effective tax rate of 23.8%$81.2 million increase in consolidated income tax expense, primarily due to an increase in income before income taxes which was partially offset by a reduction in the state deferred tax liability due to our recent acquisitions and adjustments to state tax rates and apportionment. All these factors resulted in a 2021 effective tax rate of 23.7% and a 2020 effective tax rate of 26.7%.
See additional discussion of our operating results within "Results of Operations — Consolidated Operating and Other Expenses" below.
20192021 Liquidity and Capital — During 2019,2021, we generated $839.6 million$1.2 billion in operating cash flows. We invested $569.8flows, we paid down $48.2 million in cash on our operating lease liabilities (gross of $73.8 million of lease modifications and leases obtained through acquisitions), paid down our finance lease liabilities by $108.2 million, used $282.0 million for capital expenditures (net of equipment sales proceeds), reduced our operating lease liabilities by $111.9 million, repurchased $86.9 millionspent $1.5 billion on four acquisitions (net of our common stock,cash balances acquired), and returned $41.4$57.2 million in quarterlyshare repurchases and $63.5 million in dividends to our stockholders during the year.stockholders. We ended the year with $159.7$261.0 million in unrestricted cash and cash equivalents, $279.0$260.0 million outstanding on the 2021 Revolver, $365.0 million$1.2 billion outstanding on the 2021 Term Loan,Loans, and $5.7$6.5 billion of stockholders' equity. We remain committed to a strong capital structure, which we believe will position us for long-term success and enable usstructure.
We do not foresee material liquidity constraints or any issues with our ongoing ability to pursue further opportunities for organic growth and growth through acquisition.meet our debt covenants.
See discussion under "Liquidity and Capital Resources" and "Off-Balance Sheet Transactions" for additional information.
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Results of Operations — Segment Review
During the first quarter of 2019, theThe Company reorganized its reportable segments. Accordingly, the Company now has threefour reportable segments: Trucking,Truckload, Logistics, LTL, and Intermodal, as well as certain non-reportable segments. Refer to Note 25 in Part II, Item 8 of this Annual Report for descriptions of our segments. Refer to Part I, Item 1, "Business – Our Mission and Company Strategy" of this Annual Report for discussion related to our segment operating strategies.
Consolidating Tables for Total Revenue and Operating Income (Loss)
20212020
Revenue:(Dollars in thousands)
Truckload$4,098,005 68.3 %$3,786,030 81.0 %
Logistics$817,003 13.6 %$375,841 8.0 %
LTL$396,308 6.6 %$— — %
Intermodal$458,867 7.7 %$391,462 8.4 %
Subtotal$5,770,183 96.2 %$4,553,333 97.4 %
Non-reportable segments$306,414 5.1 %$188,882 4.0 %
Intersegment eliminations$(78,578)(1.3 %)$(68,352)(1.4 %)
Total revenue$5,998,019 100.0 %$4,673,863 100.0 %
2019 2018 (recast) 2017 (recast)20212020
Revenue:(Dollars in thousands)
Trucking$3,952,866
 81.6% $4,290,254
 80.3% $1,970,326
 81.2%
Operating income (loss):Operating income (loss):(Dollars in thousands)
TruckloadTruckload$784,436 81.2 %$578,512 102.5 %
Logistics$352,988
 7.3% $436,044
 8.2% $235,925
 9.7%Logistics$93,920 9.7 %$20,245 3.6 %
LTLLTL$31,169 3.2 %$— — %
Intermodal$455,466
 9.4% $498,821
 9.3% $150,326
 6.2%Intermodal$42,060 4.4 %$(943)(0.2 %)
Subtotal$4,761,320
 98.3% $5,225,119
 97.8% $2,356,577
 97.1%Subtotal$951,585 98.5 %$597,814 105.9 %
Non-reportable segments$130,782
 2.7% $184,140
 3.4% $93,875
 3.9%Non-reportable segments$14,112 1.5 %$(33,376)(5.9 %)
Intersegment eliminations$(48,152) (1.0%) $(65,193) (1.2%) $(24,999) (1.0%)
Total revenue$4,843,950
 100.0% $5,344,066
 100.0% $2,425,453
 100.0%
Operating incomeOperating income$965,697 100.0 %$564,438 100.0 %
           
42
 2019 2018 (recast) 2017 (recast)
Operating income (loss):(Dollars in thousands)
Trucking ¹$468,749
 109.7% $550,818
 96.8% $203,258
 101.3%
Logistics$21,869
 5.1% $31,991
 5.6% $15,168
 7.6%
Intermodal$4,501
 1.1% $31,272
 5.5% $7,041
 3.5%
Subtotal$495,119
 115.9% $614,081
 107.9% $225,467
 112.4%
Non-reportable segments$(67,681) (15.9%) $(45,038) (7.9%) $(24,837) (12.4%)
Operating income$427,438
 100.0% $569,043
 100.0% $200,630
 100.0%
            
12017 operating income for the Trucking segment includes $23.1 million in 2017 Merger-related costs.

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Operating Statistics
Our chief operating decision makers monitor the GAAP results of our reportable segments, as supplemented by certain non-GAAP information. Refer to "Non-GAAP Financial Measures" below for more details. Additionally, we use a number of primary indicators to monitor our revenue and expense performance and efficiency.
Operating StatisticRelevant Segment(s)Description
Average Revenue per TractorTruckingTruckloadMeasures productivity and represents revenue (excluding fuel surcharge and intersegment transactions) divided by average tractor count
Total Miles per TractorTruckingTruckloadTotal miles (including loaded and empty miles) a tractor travels on average
Average Length of HaulTruckingTruckload, LTLAverage of miles traveled with loaded trailer cargo based onper order counts
Non-paid Empty Miles PercentageTruckingTruckloadPercentage of miles without trailer cargo
Shipments per DayLTLAverage number of shipments completed each business day
Weight per ShipmentLTLTotal weight (in pounds) divided by total shipments
Revenue per shipmentLTLTotal revenue divided by total shipments
Revenue xFSR per shipmentLTLTotal revenue, excluding fuel surcharge, divided by total shipments
Revenue per hundredweightLTLMeasures yield and is calculated as total revenue divided by total weight (in pounds) times 100
Revenue xFSR per hundredweightLTLTotal revenue, excluding fuel surcharge, divided by total weight (in pounds) times 100
Average TractorsTrucking,Truckload, LTL, IntermodalAverage tractors in operation during the period, including company tractors and tractors provided by independent contractors.contractors
Average TrailersTruckingTruckload, LTLAverage trailers in operation during the period
Average Revenue per LoadLogistics, IntermodalTotal revenue (excluding intersegment transactions) divided by load count
Gross Margin PercentageLogistics (Brokerage only)BrokerageLogistics gross margin (revenue, excluding intersegment transactions, less purchased transportation expense, excluding intersegment transactions) as a percentage of brokeragelogistics revenue, excluding intersegment transactions
Average ContainersIntermodalAverage containers in operation during the period
GAAP Operating RatioTrucking,Truckload, Logistics, LTL, IntermodalMeasures operating efficiency and is widely used in our industry as an assessment of management's effectiveness in controlling all categories of operating expenses. Calculated as operating expenses as a percentage of total revenue, or the inverse of operating margin.margin
Non-GAAP: Adjusted Operating RatioTrucking,Truckload, Logistics, LTL, IntermodalMeasures operating efficiency and is widely used in our industry as an assessment of management's effectiveness in controlling all categories of operating expenses. Consolidated and segment Adjusted Operating Ratios are reconciled to their corresponding GAAP operating ratios under "Non-GAAP Financial Measures," below.below

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Segment Review
TruckingTruckload Segment
We generate revenue in the TruckingTruckload segment primarily through irregular route, dedicated, refrigerated, flatbed, expedited, and cross-border service offerings.offerings, with 13,058 irregular route tractors and 4,961 dedicated route tractors in use during 2021. Generally, we are paid a predetermined rate per mile or per load for our trucking services. Additional revenues are generated by charging for tractor and trailer detention, loading and unloading activities, dedicated services, and other specialized services, as well as through the collection of fuel surcharge revenue to mitigate the impact of increases in the cost of fuel. The main factors that affect the revenue generated by our TruckingTruckload segment are rate per mile from our customers, the percentage of miles for which we are compensated, and the number of loaded miles we generate with our equipment.
The most significant expenses in the TruckingTruckload segment are primarily variable and include fuel and fuel taxes, driving associate-related expenses (such as wages, benefits, training, and recruitment), and costs associated with independent contractors primarily included in "Purchased transportation" in the consolidated statements of comprehensive income. Maintenance expense (which includes costs for replacement tires for our revenue equipment) and insurance and claims expenses have both fixed and variable components. These expenses generally vary with the miles we travel, but also have a controllable component based on safety, fleet age, efficiency, and other factors. The main fixed costs in the TruckingTruckload segment are depreciation and rent expenses from leasing and acquiring revenue equipment and terminals, as well as compensating our non-driver employees.
202120202021 vs. 2020
(Dollars in thousands, except per tractor data)Increase (decrease)
Total revenue$4,098,005 $3,786,030 8.2  %
Revenue, excluding fuel surcharge and intersegment transactions$3,681,271 $3,480,621 5.8  %
GAAP: Operating income$784,436 $578,512 35.6  %
Non-GAAP: Adjusted Operating Income 1
$785,772 $593,085 32.5  %
Average revenue per tractor 2
$204,299 $188,672 8.3  %
GAAP: Operating ratio 2
80.9 %84.7 %(380  bps)
Non-GAAP: Adjusted Operating Ratio 1 2
78.7 %83.0 %(430  bps)
Non-paid empty miles percentage 2
13.4 %13.1 %30  bps
Average length of haul (miles) 2
403 425 (5.2  %)
Total miles per tractor 2
81,629 90,993 (10.3  %)
Average tractors 2 3
18,019 18,448 (2.3  %)
Average trailers 2 4
67,606 57,722 17.1  %
 2019 2018 (recast) 2017 (recast) 2019 vs. 2018 2018 vs. 2017
 (Dollars in thousands, except per tractor data) Increase (decrease)
Total revenue$3,952,866
 $4,290,254
 $1,970,326
 (7.9 %) 117.7 %
Revenue, excluding fuel surcharge and intersegment transactions$3,504,091
 $3,755,614
 $1,744,227
 (6.7 %) 115.3 %
GAAP: Operating income$468,749
 $550,818
 $203,258
 (14.9 %) 171.0 %
Non-GAAP: Adjusted Operating Income ¹$472,537
 $553,667
 $228,270
 (14.7 %) 142.5 %
Average revenue per tractor ²$185,628
 $196,064
 $184,907
 (5.3 %) 6.0 %
GAAP: Operating ratio ²88.1% 87.2% 89.7% 90 bps (250 bps)
Non-GAAP: Adjusted Operating Ratio ¹ ²86.5% 85.3% 86.9% 120 bps (160 bps)
Non-paid empty miles percentage ²12.8% 12.8% 12.6% 
 20 bps
Average length of haul (miles) ²430
 421
 441
 2.1 % (4.5 %)
Total miles per tractor ²92,363
 98,448
 100,731
 (6.2 %) (2.3 %)
Average tractors ² ³18,877
 19,155
 20,138
 (1.5 %) (4.9 %)
Average trailers ²58,315
 61,723
 64,641
 (5.5 %) (4.5 %)
11Refer to "Non-GAAP Financial Measures" below.
2Defined within "Operating Statistics" above. In order to improve comparability, average tractors of 9,433 is used as the denominator in the average revenue per tractor and total miles per tractor calculations for 2017, reflecting the pro-rata portion of the year for which Swift's results of operations were reported following the close of the 2017 Merger.
3
Includes 16,432, 15,743, and 15,916 company-owned tractors for 2019, 2018, and 2017, respectively.
20192Defined within "Operating Statistics" above.
3Includes 16,166 and 16,379 company-owned tractors for 2021 and 2020, respectively.
4Includes 6,388 trailers related to our leasing activities recognized within the non-reportable segments for 2021.
2021 Compared to 20182020 The Adjusted Operating ratio increasedRatio improved by 90430 basis points to 88.1%78.7% in 2019 and2021, leading to a 32.5% improvement in Adjusted Operating Ratio increasedIncome. We grew revenue, excluding fuel surcharge and intersegment transactions by 120 basis points5.8% in 2021. Shipping demand remains strong, leading to 86.5% in 2019, withmore project business opportunities this year, which contributed to a 7.9% decrease in total revenue. Average revenue per tractor decreased 5.3% as a result of a 6.2% decrease in total miles per tractor which was partially offset by a 0.9% 21.1% increase in revenue per loaded mile, excluding fuel surcharge and intersegment transactions. In the second halfTotal miles per tractor decreased by 10.3%, due in part to a 5.2% shorter length of 2019, we incurred incremental expenses associated with exiting several underperforming refrigerated and dry dedicated accounts. We expect less volatility in the dedicated operating segment in 2020.haul.
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2018 Compared to 2017Contents TheTrucking segment's total revenue increased $2.3 billion and operating income increased by $347.6 million. These increases were primarily driven by reporting results for Swift businesses within this segment for the full year of 2018, compared to reporting results only from the portion of 2017 following the 2017 Merger. The comparison of the reported results between 2018 and 2017 may not be meaningful as the period following the 2017

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Merger consisted primarily of results from what is traditionally our strongest quarter. Due to this seasonality, many of the 2017 operating statistics reported are not representative of the activity we expect from a full year of operations.
With these limitations in mind, we saw improvements of 250 basis points in our operating ratio and 160 basis points in our Adjusted Operating Ratio. This was due to an increase of 6.0% in average revenue per tractor, partially offset by a 2.3% decrease in total miles per tractor.
Logistics Segment
The Logistics segment is less asset-intensive than the Trucking segmentTruckload and LTL segments and is dependent upon capable non-driver employees, modern and effective information technology, and third-party capacity providers. Logistics revenue is primarily generated by its brokerage operations. We generate additional revenue by offering specialized logistics solutions (including, but not limited to, trailing equipment, origin management, surge volume, disaster relief, special projects, and other logistic needs). Logistics revenue is mainly affected by the rates we obtain from customers, the freight volumes we ship through third-party capacity providers, and our ability to secure third-party capacity providers to transport customer freight.
The most significant expense in the Logistics segment is the primarily variable cost of purchased transportation that we pay to third-party capacity providers, which is a primarily variable cost, and is included in "Purchased transportation" in the consolidated statements of comprehensive income. Variability in this expense depends on truckload capacity, availability of third-party capacity providers, rates charged to customers, current freight demand, and customer shipping needs. Fixed Logistics operating expenses primarily include non-driver employee compensation and benefits recorded in "Salaries, wages, and benefits" and depreciation and amortization expense recorded in "Depreciation and amortization of property and equipment" in the consolidated statements of comprehensive income.
202120202021 vs. 2020
(Dollars in thousands, except per load data)Increase (decrease)
Total revenue$817,003 $375,841 117.4  %
Revenue, excluding intersegment transactions$798,689 $365,099 118.8  %
GAAP: Operating income$93,920 $20,245 363.9  %
Non-GAAP: Adjusted Operating Income 1 2
$94,685 $20,245 367.7  %
Revenue per load 2
$2,439 $1,689 44.4  %
Gross margin percentage 2
18.1 %14.5 %360  bps
GAAP: Operating ratio 2
88.5 %94.6 %(610  bps)
Non-GAAP: Adjusted Operating Ratio 1 2
88.1 %94.5 %(640  bps)
 2019 2018 (recast) 2017 (recast) 2019 vs. 2018 2018 vs. 2017
 (Dollars in thousands, except per load data) Increase (decrease)
Total revenue$352,988
 $436,044
 $235,925
 (19.0 %) 84.8 %
Revenue, excluding intersegment transactions$343,883
 $426,670
 $228,110
 (19.4 %) 87.0 %
GAAP: Operating income$21,869
 $31,991
 $15,168
 (31.6 %) 110.9 %
Non-GAAP: Adjusted Operating Income ¹ ²$22,490
 $32,785
 $15,168
 (31.4 %) 116.1 %
Revenue per load – Brokerage only ²$1,425
 $1,578
 $1,418
 (9.7 %) 11.3 %
Gross margin percentage – Brokerage only ²15.9% 15.8% 15.5% 10 bps 30 bps
GAAP: Operating ratio ²93.8% 92.7% 93.6% 110 bps (90 bps)
Non-GAAP: Adjusted Operating Ratio ¹ ²93.5% 92.3% 93.4% 120 bps (110 bps)
1Refer to "Non-GAAP Financial Measures" below.
1Refer to "Non-GAAP Financial Measures" below.
2Defined under "Operating Statistics" above.
20192Defined under "Operating Statistics" above.
2021 Compared to 20182020Operating ratio increased by 110 basis points and Adjusted Operating Ratio increased by 120 basis points year-over-year, with a 19.0% decrease in total revenue.
Brokerage-only— The gross margin in our brokerage business increased slightly to 15.9% in 2019 from 15.8% in 2018. Brokerage revenue, excluding intersegment transactions decreased 18.3% as a result of a 9.7% decrease in brokerage revenue per load and a 9.4% decrease in load counts.
2018 ComparedDemand for our logistics service offering continued to 2017TheLogistics segment reported increases in total revenue of $200.1 million, and operating income of $16.8 million. These increases were primarily driven by reporting results for Swift businesses within this segment for the full year of 2018, compared to reporting results only from the portion of 2017 following the 2017 Merger. The comparison of the reported results between 2018 and 2017 may not be meaningful as the period following the 2017 Merger consisted primarily of results from what is traditionally our strongest quarter. Due to this seasonality, many of the 2017 operating statistics reported are not representative of the activity we expect from a full year of operations.
With these limitations in mind, we saw meaningful improvement in our operating profitability within our Logistics segment during 2018. Brokerage gross margin percentage forgrow throughout the year, improvedas we continue to leverage our fleet of approximately 70,000 trailers for our Power-only service offering. Logistics revenue, excluding intersegment transactions increased 118.8% as we grew load count by 30 basis points on a year-over-year basis to 15.8%51.5%, primarily due to the increase inwhile increasing revenue per load which was partially offset by a corresponding increase in purchased transportation costs.44.4%. The segment's operating ratio and Adjusted Operating Ratio improved by 90 basis points and 110 basis points, respectively, primarily due to the88.1%, resulting in a 367.7% increase in average revenue per load.Adjusted Operating Income. Gross margin was 18.1% in 2021, compared to 14.5% in 2020.

Within our Power-only service offering, which excludes the operations of our intermodal, drayage, and port services, revenue grew by 314.3% as a result of a 104.2% increase in load volumes. Our Power-only service offering represented approximately 32.8% of brokerage load volumes during 2021. During 2021, through our Select platform, we digitally matched an average of approximately 5,500 carriers per quarter to available loads.
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LTL Segment
Our LTL segment was established in 2021 by the ACT and MME acquisitions and consists of regional motor carriers headquartered in Dothan, Alabama and Bismarck, North Dakota. We provide regional direct service and serve our customers' national transportation needs by utilizing key partner carriers for coverage areas outside of our network. We primarily generate revenue by transporting freight for our customers through our core LTL services.
Our revenues are impacted by shipment volume and tonnage levels that flow through our network. Additional revenues are generated through fuel surcharges and accessorial services provided during transit from shipment origin to destination. We focus on the following multiple revenue generation factors when reviewing revenue yield: revenue per hundredweight, revenue per shipment, weight per shipment, and length of haul. Fluctuation within each of these metrics is analyzed when determining the revenue quality of our customers' shipment density.
Our most significant expense is related to direct costs associated with the transportation of our freight moves including; direct salary, wage and benefit costs, fuel expense, and depreciation expense associated with revenue equipment costs. Other expenses associated with revenue generation that can fluctuate and impact operating results are insurance and claims expense as well as maintenance costs of our revenue equipment. These expenses can be influenced by multiple factors including our safety performance, equipment age, and other factors. A key component to lowering our operating costs is labor efficiency within our network. We continue to focus on technological advances to improve the customer experience and reduce our operating costs.
Note: In accordance with the accounting treatment applicable to the ACT and MME acquisitions, the LTL segment's reported results do not include the operating results of the acquired entities prior to the respective acquisition dates.
2021
(Dollars in thousands, except per shipment and per hundredweight data)
Total revenue$396,308 
Revenue, excluding fuel surcharge$345,785 
GAAP: Operating income$31,169 
Non-GAAP: Adjusted Operating Income 1
$38,293 
GAAP: Operating ratio 2
92.1 %
Non-GAAP: Adjusted Operating Ratio 1 2
88.9 %
Shipments per day 2
16,438 
Weight per shipment 2
1,111 
Average length of haul (miles) 2
518 
Revenue per shipment 2
$161.66 
Revenue xFSR per shipment 2
$141.57 
Revenue per hundredweight 2
$14.55 
Revenue xFSR per hundredweight 2
$12.75 
Average tractors 2 3
2,735 
Average trailers 2 4
7,413 
1Refer to "Non-GAAP Financial Measures" below.
2Defined under "Operating Statistics," above.
3Includes 667 tractors from ACT's and MME's dedicated and other businesses for 2021.
4Includes 860 trailers from ACT's and MME's dedicated and other businesses for 2021.
Our LTL segment operates across approximately 100 facilities with a door count of over 4,200. We generated $345.8 million in revenue, excluding fuel surcharge and an 88.9% Adjusted Operating Ratio during 2021 within the LTL segment. Revenue, excluding fuel surcharge, per hundredweight was $12.75, while revenue per shipment, excluding fuel surcharge, was $141.57.
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Intermodal Segment
The Intermodal segment complements our regional operating model, allows us to better serve customers in longer haul lanes, and reduces our investment in fixed assets. Through the Intermodal segment, we generate revenue by moving freight over the rail in our containers and other trailing equipment, combined with revenue for drayage to transport loads between railheads and customer locations. The most significant expense in the Intermodal segment is the cost of purchased transportation that we pay to third-party capacity providers (including rail providers), which is primarily variable and included in "Purchased transportation" in the consolidated statements of comprehensive income. Purchased transportation varies as it relates to rail capacity, freight demand, and customer shipping needs. The main fixed costs in the Intermodal segment are depreciation of our company tractors related to drayage, containers, and chassis, as well as non-driver employee compensation and benefits.
202120202021 vs. 2020
(Dollars in thousands, except per load data)Increase (decrease)
Total revenue$458,867 $391,462 17.2  %
Revenue, excluding intersegment transactions$458,583 $391,098 17.3  %
GAAP: Operating income (loss)$42,060 $(943)4,560.2  %
Non-GAAP: Adjusted Operating Income (Loss) 1 2
$42,060 $(830)5,167.5  %
Average revenue per load 2
$2,852 $2,342 21.8  %
GAAP: Operating ratio 2
90.8 %100.2 %(940  bps)
Non-GAAP: Adjusted Operating Ratio 1 2
90.8 %100.2 %(940  bps)
Load count160,774 166,977 (3.7  %)
Average tractors 2 3
597 577 3.5  %
Average containers 2
10,847 10,604 2.3  %
 2019 2018 (recast) 2017 (recast) 2019 vs. 2018 2018 vs. 2017
 (Dollars in thousands, except per load data) Increase (decrease)
Total revenue$455,466
 $498,821
 $150,326
 (8.7 %) 231.8 %
Revenue, excluding intersegment transactions$453,978
 $497,598
 $149,906
 (8.8 %) 231.9 %
GAAP: Operating income$4,501
 $31,272
 $7,041
 (85.6 %) 344.1 %
Non-GAAP: Adjusted Operating Income ¹ ²$4,501
 $31,317
 $7,041
 (85.6 %) 344.8 %
Average revenue per load ²$2,426
 $2,438
 $2,158
 (0.5 %) 13.0 %
GAAP: Operating ratio ²99.0% 93.7% 95.3% 530 bps (160 bps)
Non-GAAP: Adjusted Operating Ratio ¹ ²99.0% 93.7% 95.3% 530 bps (160 bps)
Load count187,131
 204,103
 69,479
 (8.3 %) 193.8 %
Average tractors ² ³643
 640
 531
 0.5 % 20.5 %
Average containers ²9,862
 9,330
 9,122
 5.7 % 2.3 %
11Refer to "Non-GAAP Financial Measures" below.
2Defined within "Operating Statistics" above.
3
Includes 568, 551, and 442 company-owned tractors for 2019, 2018, and 2017, respectively.
20192Defined within "Operating Statistics" above.
3Includes 543 and 518 company-owned tractors for 2021 and 2020, respectively.
2021 Compared to 20182020 Our Intermodal segment producedRevenue grew by 17.2% while the Adjusted Operating Ratio improved from 100.2% in 2020 to 90.8% in 2021, resulting in a 99.0% operating ratio during 2019, compared$42.9 million increase in Adjusted Operating Income. Continued rail congestion and rail allocations resulted in a reduction of load count, but contributed to 93.7% during 2018. Total revenue decreased 8.7% due to an 8.3%decreasea 21.8% increase in load volumes and a slight decrease of0.5% in average revenue per load.
Our results were negatively affected by inclement weather impactingWe anticipate operational improvements in cost structure and network design as we continue to transition to a new western rail lanespartner in the first quarter of 2022. To position Intermodal for continued growth, we are in the process of growing our container count and slower rail transit times at the onset of 2019, followed by increased market pressures continuing throughoutplan to add approximately 2,000 containers during the year. Additionally, we added container capacity to facilitate our growth plan within this segment, which increased our fixed costs. We are focused on increasing load volumes with a diversified customer base, while improving our cost structure through reduced rail and drayage expenses.
2018 Compared to 2017The Intermodal segment reported increasesOur long-term structural improvements in total revenue of $348.5 million and operating income of $24.2 million. These increases were primarily driven by reporting Swift's Intermodal results within this segment for the full year of 2018, compared to reporting results only from the portion of 2017 following the 2017 Merger. The comparison of the reported results between 2018 and 2017 may not be meaningful as the period following the 2017 Merger consisted primarily of results from what is traditionally our strongest quarter. Due to this seasonality, many of the 2017 operating statistics reported are not representative of the activity we expect from a full year of operations.
With these limitations in mind, we saw meaningful improvement in our operating profitability within our Intermodal segment during 2018. As a resultmargins of our focus on improving our revenue per load and executing on cost control, our Intermodal segment's operating ratio andbusiness are ultimately expected to lead to an Adjusted Operating Ratio each improved by 160 basis points.

in the high-80s to mid-90s. We expect load volumes to increase in the back half of the year.
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Non-reportable SegmentsLogistics Segment
The non-reportableLogistics segment is less asset-intensive than the Truckload and LTL segments include support services providedand is dependent upon capable non-driver employees, modern and effective information technology, and third-party capacity providers. Logistics revenue is generated by its brokerage operations. We generate additional revenue by offering specialized logistics solutions (including, but not limited to, trailing equipment, origin management, surge volume, disaster relief, special projects, and other logistic needs). Logistics revenue is mainly affected by the rates we obtain from customers, the freight volumes we ship through third-party capacity providers, and our customers and independent contractors (including repair and maintenance shop services, equipment leasing, warranty services, and insurance), trailer parts manufacturing, and certain driving academy activities, as well as certain corporate expenses (such as legal settlements and accruals, certain impairments, and $10.3 million in quarterly amortization of intangibles relatedability to the 2017 Merger).secure third-party capacity providers to transport customer freight.
 2019 2018 (recast) 2017 (recast) 2019 vs. 2018 2018 vs. 2017
 (Dollars in thousands) Increase (decrease)
Total revenue$130,782
 $184,140
 $93,875
 (29.0 %) 96.2
Operating loss$(67,681) $(45,038) $(24,837) 50.3 % 81.3
2019 Compared to 2018The decrease in total revenue within our non-reportable segments is primarily attributed to a decrease in leasing and insurance activities with independent contractors. This was accompanied by a corresponding decreasemost significant expense in the operating expenses associated with these activities. Further, operating loss increased year-over-year,Logistics segment is purchased transportation that we pay to third-party capacity providers, which is a primarily due tovariable cost, and is included in "Purchased transportation" in the recognition of $35.8 million in 2019 in revised estimates for litigation related to various pre-2017 Merger legal matters which were previously disclosed by Swift.
2018 Compared to 2017The increases in total revenue and operating loss within our non-reportable segments are primarily driven by reporting results for the full year of 2018, compared to reporting results only from the portion of 2017 following the 2017 Merger. The comparison of the reported results between 2018 and 2017 may not be meaningful as the period following the 2017 Merger consisted primarily of results from what is traditionally our strongest quarter.

Results of Operations — Consolidated Operating and Other Expenses
Consolidated Operating Expenses
The following tables present certain operating expenses from our consolidated statements of comprehensive income, including each operatingincome. Variability in this expense as a percentagedepends on truckload capacity, availability of total revenuethird-party capacity providers, rates charged to customers, current freight demand, and as a percentage of revenue, excluding trucking fuel surcharge. Fuel surcharge revenue can be volatile and is primarily dependent upon the cost of fuel, rather thancustomer shipping needs. Fixed Logistics operating expenses unrelated to fuel. Therefore, we believe that revenue, excluding trucking fuel surcharge is a better measure for analyzing many of our expenses and operating metrics.
Note: The reported results do notprimarily include the results of operations of Abilene on and prior to its acquisition by the Company on March 16, 2018 in accordance with the accounting treatment applicable to the transaction. Accordingly, comparisons between the Company's 2019 results and prior periods may not be meaningful.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Salaries, wages, and benefits$1,474,073
 $1,495,126
 (1.4 %)
% of total revenue30.4% 28.0% 240 bps
% of revenue, excluding trucking fuel surcharge33.5% 31.1% 240 bps
Salaries, wages, and benefits expense is primarily affected by the total number of miles driven by company driving associates, the rate per mile we pay our company driving associates, and employee benefits, including healthcare, workers' compensation and other benefits. To a lesser extent, non-driver employee headcount, compensation and benefits affect this expense. Driving associate wages represent the largest component of salaries,recorded in "Salaries, wages, and benefits expense. Several ongoing market factors have reducedbenefits" and depreciation and amortization expense recorded in "Depreciation and amortization of property and equipment" in the poolconsolidated statements of available driving associates, contributingcomprehensive income.
202120202021 vs. 2020
(Dollars in thousands, except per load data)Increase (decrease)
Total revenue$817,003 $375,841 117.4  %
Revenue, excluding intersegment transactions$798,689 $365,099 118.8  %
GAAP: Operating income$93,920 $20,245 363.9  %
Non-GAAP: Adjusted Operating Income 1 2
$94,685 $20,245 367.7  %
Revenue per load 2
$2,439 $1,689 44.4  %
Gross margin percentage 2
18.1 %14.5 %360  bps
GAAP: Operating ratio 2
88.5 %94.6 %(610  bps)
Non-GAAP: Adjusted Operating Ratio 1 2
88.1 %94.5 %(640  bps)
1Refer to a challenging driver sourcing market, which we believe will continue. Having a sufficient number of qualified driving associates is"Non-GAAP Financial Measures" below.
2Defined under "Operating Statistics" above.
2021 Compared to 2020Demand for our biggest headwind, althoughlogistics service offering continued to grow throughout the year, as we continue to seek waysleverage our fleet of approximately 70,000 trailers for our Power-only service offering. Logistics revenue, excluding intersegment transactions increased 118.8% as we grew load count by 51.5%, while increasing revenue per load by 44.4%. The Adjusted Operating Ratio improved to attract88.1%, resulting in a 367.7% increase in Adjusted Operating Income. Gross margin was 18.1% in 2021, compared to 14.5% in 2020.
Within our Power-only service offering, which excludes the operations of our intermodal, drayage, and retain qualified driving associates, including heavily investing in our recruiting efforts, our driving academies, and technology and terminals that improve the experience of driving associates. Asport services, revenue grew by 314.3% as a result of the tight market for qualified driving associates,a 104.2% increase in load volumes. Our Power-only service offering represented approximately 32.8% of brokerage load volumes during 2021. During 2021, through our Select platform, we granted pay increasesdigitally matched an average of approximately 5,500 carriers per quarter to our driving associates throughout 2018, as supported by increases in customer rates. These increases were reflected during the full year of 2019 compared with the partial period impact after the increases in 2018. We expect driving associate pay to remain inflationary, which could result in additional driving associate pay increases in the future.

available loads.
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LTL Segment
2019 ComparedOur LTL segment was established in 2021 by the ACT and MME acquisitions and consists of regional motor carriers headquartered in Dothan, Alabama and Bismarck, North Dakota. We provide regional direct service and serve our customers' national transportation needs by utilizing key partner carriers for coverage areas outside of our network. We primarily generate revenue by transporting freight for our customers through our core LTL services.
Our revenues are impacted by shipment volume and tonnage levels that flow through our network. Additional revenues are generated through fuel surcharges and accessorial services provided during transit from shipment origin to 2018The $21.1 million decrease in consolidated salaries, wages,destination. We focus on the following multiple revenue generation factors when reviewing revenue yield: revenue per hundredweight, revenue per shipment, weight per shipment, and benefits was primarily duelength of haul. Fluctuation within each of these metrics is analyzed when determining the revenue quality of our customers' shipment density.
Our most significant expense is related to a decrease in non-driver salariesdirect costs associated with the transportation of our freight moves including; direct salary, wage and wages, lower workers' compensationbenefit costs, fuel expense, and a 0.6% decrease in miles driven by company driving associates. This was partially offset by a $6.6 million increase from Abilene'sdepreciation expense associated with revenue equipment costs. Other expenses associated with revenue generation that can fluctuate and impact operating results for all of 2019 compared to the portion of 2018 following the Abilene Acquisition on March 16, 2018,are insurance and the full-year impact of the driving associate pay increases discussed above.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Fuel$583,123
 $621,997
 (6.2 %)
% of total revenue12.0% 11.6% 40 bps
% of revenue, excluding trucking fuel surcharge13.3% 12.9% 40 bps
Fuelclaims expense consists primarily of diesel fuel expense for our company-owned tractors and fuel taxes. The primary factors affecting our fuel expense are the cost of diesel fuel, the fuel economyas well as maintenance costs of our revenue equipment. These expenses can be influenced by multiple factors including our safety performance, equipment age, and the miles driven by company driving associates.
Our fuel surcharge programs helpother factors. A key component to offset increases in fuel prices, but apply only to loaded miles and typically do not offset non-paid empty miles, idle time, and out-of-route miles driven.  Typical fuel surcharge programs involve a computation based on the change in national or regional fuel prices.  These programs may update as often as weekly, but typically require a specified minimum change in fuel cost to prompt a change in fuel surcharge revenue for our trucking segments. Therefore, many of these programs have a time lag between when fuel costs change and when the change is reflected in fuel surcharge revenue.  Due to this time lag, our fuel expense, net of fuel surcharge, negatively impactslowering our operating income during periods of sharply rising fuel costs and positively impactsis labor efficiency within our operating income during periods of falling fuel costs.network. We continue to utilizefocus on technological advances to improve the customer experience and reduce our fuel efficiency initiatives such as trailer blades, idle-control, managing tractor speeds, updating our fleetoperating costs.
Note: In accordance with more fuel-efficient engines, managing fuel procurement, and driving associate training programs that we believe contribute to controlling our fuel expense.
2019 Compared to 2018The $38.9 million decrease in consolidated fuel expense is primarily due to a decrease in the average DOE fuel price to $3.06 per gallon for 2019 from $3.18 per gallon for 2018, and a 0.6% reduction in the total miles driven by company driving associates.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Operations and maintenance$322,188
 $340,627
 (5.4 %)
% of total revenue6.7% 6.4% 30 bps
% of revenue, excluding trucking fuel surcharge7.3% 7.1% 20 bps
Operations and maintenance expense consists of direct operating expenses, driving associate development and recruiting expenses, equipment maintenance, and tire expense.  Operations and maintenance expenses are affected by the age of our company-owned fleet of tractors and trailers, as well as total miles driven by company driving associates. We expect the driver market to remain competitive into 2020, which could increase future driving associate development and recruiting costs and negatively affect our operations and maintenance expense. We expect to continue refreshing our fleet in the coming quarters, and anticipate that maintenance costs will gradually decrease as we reduce the average age of our fleets.
2019 Compared to 2018The $18.4 million decrease in consolidated operations and maintenance expense is attributedaccounting treatment applicable to the reduced maintenance expense associatedACT and MME acquisitions, the LTL segment's reported results do not include the operating results of the acquired entities prior to the respective acquisition dates.
2021
(Dollars in thousands, except per shipment and per hundredweight data)
Total revenue$396,308 
Revenue, excluding fuel surcharge$345,785 
GAAP: Operating income$31,169 
Non-GAAP: Adjusted Operating Income 1
$38,293 
GAAP: Operating ratio 2
92.1 %
Non-GAAP: Adjusted Operating Ratio 1 2
88.9 %
Shipments per day 2
16,438 
Weight per shipment 2
1,111 
Average length of haul (miles) 2
518 
Revenue per shipment 2
$161.66 
Revenue xFSR per shipment 2
$141.57 
Revenue per hundredweight 2
$14.55 
Revenue xFSR per hundredweight 2
$12.75 
Average tractors 2 3
2,735 
Average trailers 2 4
7,413 
1Refer to "Non-GAAP Financial Measures" below.
2Defined under "Operating Statistics," above.
3Includes 667 tractors from ACT's and MME's dedicated and other businesses for 2021.
4Includes 860 trailers from ACT's and MME's dedicated and other businesses for 2021.
Our LTL segment operates across approximately 100 facilities with refreshing our fleet with newer equipment and the 0.6% reductiona door count of over 4,200. We generated $345.8 million in total miles driven by company driving associates. As a percentage of revenue, excluding trucking fuel surcharge and an 88.9% Adjusted Operating Ratio during 2021 within the expense increased slightly.

LTL segment. Revenue, excluding fuel surcharge, per hundredweight was $12.75, while revenue per shipment, excluding fuel surcharge, was $141.57.
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Intermodal Segment
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Insurance and claims$194,336
 $215,362
 (9.8 %)
% of total revenue4.0% 4.0% 
% of revenue, excluding trucking fuel surcharge4.4% 4.5% (10 bps)
InsuranceThe Intermodal segment complements our regional operating model, allows us to better serve customers in longer haul lanes, and claimsreduces our investment in fixed assets. Through the Intermodal segment, we generate revenue by moving freight over the rail in our containers and other trailing equipment, combined with revenue for drayage to transport loads between railheads and customer locations. The most significant expense consistsin the Intermodal segment is the cost of premiums for liability, physical damage,purchased transportation that we pay to third-party capacity providers (including rail providers), which is primarily variable and cargo,included in "Purchased transportation" in the consolidated statements of comprehensive income. Purchased transportation varies as it relates to rail capacity, freight demand, and will vary based uponcustomer shipping needs. The main fixed costs in the frequencyIntermodal segment are depreciation of our company tractors related to drayage, containers, and severity of claims,chassis, as well as non-driver employee compensation and benefits.
202120202021 vs. 2020
(Dollars in thousands, except per load data)Increase (decrease)
Total revenue$458,867 $391,462 17.2  %
Revenue, excluding intersegment transactions$458,583 $391,098 17.3  %
GAAP: Operating income (loss)$42,060 $(943)4,560.2  %
Non-GAAP: Adjusted Operating Income (Loss) 1 2
$42,060 $(830)5,167.5  %
Average revenue per load 2
$2,852 $2,342 21.8  %
GAAP: Operating ratio 2
90.8 %100.2 %(940  bps)
Non-GAAP: Adjusted Operating Ratio 1 2
90.8 %100.2 %(940  bps)
Load count160,774 166,977 (3.7  %)
Average tractors 2 3
597 577 3.5  %
Average containers 2
10,847 10,604 2.3  %
1Refer to "Non-GAAP Financial Measures" below.
2Defined within "Operating Statistics" above.
3Includes 543 and 518 company-owned tractors for 2021 and 2020, respectively.
2021 Compared to 2020 Revenue grew by 17.2% while the Adjusted Operating Ratio improved from 100.2% in 2020 to 90.8% in 2021, resulting in a $42.9 million increase in Adjusted Operating Income. Continued rail congestion and rail allocations resulted in a reduction of load count, but contributed to a 21.8% increase in revenue per load.
We anticipate operational improvements in cost structure and network design as we continue to transition to a new western rail partner in the first quarter of 2022. To position Intermodal for continued growth, we are in the process of growing our levelcontainer count and plan to add approximately 2,000 containers during the year. Our long-term structural improvements in the margins of self-insurance, and premium expense. In recent years, insurance carriers have raised premiums for many businesses, including transportation companies, and as a result, our insurance and claims expense couldbusiness are ultimately expected to lead to an Adjusted Operating Ratio in the high-80s to mid-90s. We expect load volumes to increase in the future, or we could raise our self-insured retention when our policies are renewed or replaced. Insurance and claims expense also varies based onback half of the number of miles driven by company driving associates and independent contractors, the frequency and severity of accidents, trends in development factors used in actuarial accruals, and developments in large, prior-year claims. In future periods, our higher self-retention limits may cause increased volatility in our consolidated insurance and claims expense.
2019 Compared to 2018The $21.0 million decrease in consolidated insurance and claims expense was primarily due to overall improvements in the frequency and severity of our claims experience, as a result of fewer miles traveled and our increased focus on improving our safety standards for our driving associates and independent contractors.year.
47
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Operating taxes and licenses$88,481
 $90,778
 (2.5 %)
% of total revenue1.8% 1.7% 10 bps
% of revenue, excluding trucking fuel surcharge2.0% 1.9% 10 bps
Operating taxes and licenses include expenses such as state franchise taxes, federal highway use taxes, property taxes, vehicle license and registration fees, and fuel and mileage taxes. The expense is impacted by changes in the tax rates and registration fees associated with our tractor fleet and regional operating facilities.
2019 Compared to 2018Consolidated operating taxes and licenses for 2019 decreased by $2.3 million compared to 2018, but remained relatively flat as a percentage of revenue, excluding trucking fuel surcharge.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Communications$19,520
 $20,911
 (6.7 %)
% of total revenue0.4% 0.4% 
% of revenue, excluding trucking fuel surcharge0.4% 0.4% 
Communications expense is comprised of costs associated with our tractor and trailer tracking systems, information technology systems, and phone systems.
2019 Compared to 2018Consolidated communications expense remained flat as a percentage of revenue, excluding trucking fuel surcharge for 2019 as compared to 2018.

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 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Depreciation and amortization of property and equipment$420,082
 $387,505
 8.4 %
% of total revenue8.7% 7.3% 140 bps
% of revenue, excluding trucking fuel surcharge9.6% 8.1% 150 bps
Depreciation relates primarily to our owned tractors, trailers, buildings, ELDs and other communication units, and other similar assets. Changes to this fixed cost are generally attributed to increases or decreases to company-owned equipment, the relative percentage of owned versus leased equipment, and fluctuations in new equipment purchase prices, which have historically been precipitated in part by new or proposed federal and state regulations (such as the EPA engine emissions requirements relating to post-2014 model tractors and the California trailer efficiency requirements). Depreciation can also be affected by the cost of used equipment that we sell or trade and the replacement of older used equipment. Management periodically reviews the condition, average age, and reasonableness of estimated useful lives and salvage values of our equipment and considers such factors in light of our experience with similar assets, used equipment market conditions, and prevailing industry practice.
2019 Compared to 2018The $32.6 million increase in consolidated depreciation and amortization of property and equipment includes a $2.1 million increase in expense from Abilene's results for 2019, compared to the portion of 2018 following the Abilene Acquisition on March 16, 2018. The 150 basis point increase in the expense as a percentage of revenue, excluding trucking fuel surcharge, is due to an increase in owned versus leased equipment.
We expect consolidated depreciation and amortization of property and equipment to increase both in total and as a percentage of consolidated revenue, excluding trucking fuel surcharge, as we plan to purchase, rather than lease, the majority of our new equipment during 2020.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Amortization of intangibles$42,876
 $42,584
 0.7 %
% of total revenue0.9% 0.8% 10 bps
% of revenue, excluding trucking fuel surcharge1.0% 0.9% 10 bps
Amortization of intangibles primarily relates to intangible assets identified with the 2017 Merger. See Note 5 and Note 11 in Part II, Item 8, of this Annual Report for further details regarding the Company's intangible assets, historical amortization, and anticipated future amortization.
2019 Compared to 2018The $0.3 million increase in consolidated amortization of intangibles for 2019 is comprised of $0.2 million from the Abilene Acquisition on March 31, 2018, and $0.1 million from a small acquisition which occurred during 2019.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Rental expense$122,738
 $177,406
 (30.8 %)
% of total revenue2.5% 3.3% (80 bps)
% of revenue, excluding trucking fuel surcharge2.8% 3.7% (90 bps)
Rental expense consists primarily of payments for tractors and trailers financed with operating leases. The primary factors affecting the expense are the size our revenue equipment fleet and the relative percentage of owned versus leased equipment.
2019 Compared to 2018The $54.7 million decrease in consolidated rental expense was primarily due to increasing our ratio of owned versus leased equipment.
We expect consolidated rental expense to continue to decrease both in total and as a percentage of consolidated revenue, excluding trucking fuel surcharge, as we plan to purchase, rather than lease, the majority of our new equipment during 2020.

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 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Purchased transportation$1,035,969
 $1,318,303
 (21.4 %)
% of total revenue21.4% 24.7% (330 bps)
% of revenue, excluding trucking fuel surcharge23.6% 27.4% (380 bps)
Purchased transportation expense is comprised of payments to independent contractors in our trucking operations, as well as payments to third-party capacity providers related to logistics, freight management, and non-trucking services in our logistics and intermodal businesses.  Purchased transportation is generally affected by capacity in the market as well changes in fuel prices. As capacity tightens, our payments to third-party capacity providers and to independent contractors tend to increase. Additionally, as fuel prices increase, payments to third-party capacity providers and independent contractors increase.
2019 Compared to 2018The $282.3 million decrease in consolidated purchased transportation expense is primarily due to a 30.7% decrease in miles driven by independent contractors, as well as lower purchased transportation expense from third-party carrier activities in our Logistics and Intermodal segments.
We expect consolidated purchased transportation will increase as a percentage of revenue, excluding trucking fuel surcharge, if we grow our logistics and intermodal businesses. The increase could be partially offset if independent contractors exit the market due to regulatory changes.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Impairments$3,486
 $2,798
 24.6
2019 Compared to 2018During 2019, we incurred impairment charges related to certain revenue equipment technology, warehousing equipment no longer in use, leasehold improvements from the early termination of a lease of one of our operating properties, and certain Swift legacy trailer models as a result of a softer used equipment market. The impairments were recorded across various segments, depending on the nature of the impairment. During 2018, we incurred impairment charges related to the Company airplane of $2.2 million and incurred impairment charges related to replaced software systems of $0.6 million.
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Miscellaneous operating expenses$109,640
 $61,626
 77.9
Miscellaneous operating expenses primarily consists of legal and professional services fees, general and administrative expenses, other costs, net of gain on sales of equipment.
2019 Compared to 2018The $48.0 million increase in consolidated miscellaneous operating expenses is primarily due to the recognition of $35.8 million in 2019 in revised estimates for litigation from various pre-2017 Merger legal matters which were previously disclosed by Swift, a $4.4 million increase due to pre-2017 MergerValue Added Tax receivables from 2016 and prior years that have been deemed unrecoverable as of December 31, 2019, and a $3.3 million decrease in gain on sales of equipment due to a softer used truck market.

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Consolidated Other Expenses, net
The following table summarizes fluctuations in certain non-operating expenses, included in our consolidated statements of comprehensive income:
 2019 2018 2019 vs. 2018
 (Dollars in thousands) Increase (decrease)
Interest income$(3,834) $(3,200) 19.8 %
Interest expense$29,433
 $30,170
 (2.4 %)
Other income, net$(12,137) $(9,965) 21.8 %
Income tax expense$103,798
 $131,389
 (21.0 %)
Interest income — Interest income includes interest earned from financing revenue equipment to independent contractors, as well as interest earned from our investments.
2019 Compared to 2018Consolidated interest income remained relatively flat when compared to 2018.
Interest expense —Interest expense is comprised of debt and finance lease interest expense as well as amortization of deferred loan costs.
2019 Compared to 2018Consolidated interest expense slightly decreased when compared to 2018. See Note 16 in Part II, Item 8 of this Annual Report for further information related to the 2017 Debt Agreement and related interest rates and deferred loan costs.
Other income, net —Other income, net is primarily comprised of income (expense) from realized losses from equity securities, unrealized gains from Knight's investments in Transportation Resource Partners ("TRP") accounted for under the equity method, as well as certain other non-operating income and expense items that may arise outside of the normal course of business.
2019 Compared to 2018The $2.2 million increase in consolidated other income is primarily related to an increase in gains on TRP investments to $7.4 million in 2019 from $4.5 million in 2018.
Income tax expense — In addition to the discussion below, Note 14 in Part II, Item 8 of this Annual Report provides further analysis related to income taxes.
2019 Compared to 2018The $27.6 million decrease in consolidated income tax expense was primarily due to a decrease in pretax earnings and a partial release of our reserve for uncertain tax positions recognized as a discrete item. This was partially offset by a decrease in foreign income tax deductions recognized as a discrete item. In 2018, we recognized discrete items related to stock compensation deductions and a favorable audit settlement of nondeductible penalties. All of these factors resulted in a 2019 effective tax rate of 25.1% and a 2018 effective tax rate of 23.8%.


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Non-GAAP Financial Measures
The terms "Adjusted Net Income Attributable to Knight-Swift," "Adjusted EPS," "Adjusted Operating Income," and "Adjusted Operating Ratio", as we define them, are not presented in accordance with GAAP. These financial measures supplement our GAAP results in evaluating certain aspects of our business. We believe that using these measures improves comparability in analyzing our performance because they remove the impact of items from our operating results that, in our opinion, do not reflect our core operating performance. Management and the Board focus on Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, Adjusted Operating Income, and Adjusted Operating Ratio as key measures of our performance, all of which are reconciled to the most comparable GAAP financial measures and further discussed below. We believe our presentation of these non-GAAP financial measures is useful because it provides investors and securities analysts the same information that we use internally for purposes of assessing our core operating performance.
Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, Adjusted Operating Income, and Adjusted Operating Ratio are not substitutes for their comparable GAAP financial measures, such as net income, cash flows from operating activities, operating income, operating margin, or other measures prescribed by GAAP. There are limitations to using non-GAAP financial measures. Although we believe that they improve comparability in analyzing our period to period performance, they could limit comparability to other companies in our industry if those companies define these measures differently. Because of these limitations, our non-GAAP financial measures should not be considered measures of income generated by our business or discretionary cash available to us to invest in the growth of our business. Management compensates for these limitations by primarily relying on GAAP results and using non-GAAP financial measures on a supplemental basis.
Pursuant to the requirements of Regulation G, the following tables reconcile GAAP consolidated net income attributable to Knight-Swift to non-GAAP consolidated Adjusted Net Income attributable to Knight-Swift, GAAP consolidated earnings per diluted share to non-GAAP consolidated Adjusted Earnings per Diluted Share, GAAP consolidated operating ratio to non-GAAP consolidated Adjusted Operating Ratio, GAAP reportable segment operating income to non-GAAP reportable segment Adjusted Operating Income, and GAAP reportable segment operating ratio to non-GAAP reportable segment Adjusted Operating Ratio.
In the consolidated GAAP to non-GAAP reconciliations below, 2016 and 2015 are included to support the five-year presentation in "Selected Financial Data" in Part II, Item 6 of this Annual Report.
Note: The reported results do not include the results of operations of Swift and its subsidiaries on and prior to the 2017 Merger, in accordance with the accounting treatment applicable to the transaction. Additionally, the reported results do not include the results of operations of Abilene on and prior to its acquisition by the Company on March 16, 2018 in accordance with the accounting treatment applicable to the transaction. Accordingly, comparisons between the Company's 2019 results and prior periods may not be meaningful.

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Non-GAAP Reconciliation:
Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS
 2019 2018 2017 2016 2015
 (Dollars in thousands)
GAAP: Net income attributable to Knight-Swift$309,206
 $419,264
 $484,292
 $93,863
 $116,718
Adjusted for:

 

 

 

 

Income tax expense (benefit) attributable to Knight-Swift103,798
 131,389
 (291,716) 57,592
 68,047
Income before income taxes attributable to Knight-Swift413,004
 550,653
 192,576
 151,455
 184,765
Amortization of intangibles ¹42,876
 42,584
 12,872
 
 
Impairments ²3,486
 2,798
 16,844
 
 
Legal accruals ³35,840
 1,000
 1,900
 2,450
 7,163
Other merger-related operating expenses 4

 
 6,596
 
 
Merger-related costs 5

 
 16,516
 
 
Severance expense 6

 1,958
 
 
 
Adjusted income before income taxes495,206
 598,993
 247,304
 153,905
 191,928
Provision for income tax expense at effective rate 7
(122,124) (142,923) (92,739) (58,532) (70,815)
Non-GAAP: Adjusted Net Income Attributable to Knight-Swift$373,082
 $456,070
 $154,565
 $95,373
 $121,113
          
Note: Since the numbers reflected in the table below are calculated on a per share basis, they may not foot due to rounding.
 2019 2018 2017 2016 2015
GAAP: Earnings per diluted share$1.80
 $2.36
 $4.34
 $1.16
 $1.42
Adjusted for:         
Income tax expense (benefit) attributable to Knight-Swift0.60
 0.74
 (2.61) 0.71
 0.83
Income before income taxes attributable to Knight-Swift2.40
 3.09
 1.72
 1.86
 2.24
Amortization of intangibles ¹0.25
 0.24
 0.12
 
 
Impairments ²0.02
 0.02
 0.15
 
 
Legal accruals ³0.21
 0.01
 0.02
 0.03
 0.09
Other merger-related operating expenses 4

 
 0.06
 
 
Merger-related costs 5

 
 0.15
 
 
Severance expense 6

 0.01
 
 
 
Adjusted income before income taxes2.88
 3.37
 2.21
 1.89
 2.33
Provision for income tax expense at effective rate 7
(0.71) (0.80) (0.83) (0.72) (0.86)
Non-GAAP: Adjusted EPS$2.17
 $2.56
 $1.38
 $1.17
 $1.47
          
1
"Amortization of intangibles" reflects the non-cash amortization expense relating to intangible assets identified in the 2017 Merger, Abilene Acquisition, and other acquisitions. Refer toNote 5 in Part II Item 8 of this Annual Report for additional details.

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2
We incurred $1.3 million of impairment charges in the fourth quarter of 2019, which was associated with certain revenue equipment technology, warehousing equipment no longer in use, and certain Swift legacy trailer models as a result of a softer used equipment market. The impairments were recorded across various segments, depending on the nature of the impairment. In addition to these fourth quarter 2019 impairment charges, full-year 2019 includes $2.2 million of impaired leasehold improvements from an early termination of a lease of one of our operating properties. During the fourth quarter of 2018, the Company incurred impairment charges related to the Company airplane of $2.2 million and incurred impairment charges related to replaced software systems of $0.6 million. During 2017, impairments related to the termination of Swift's implementation of a new ERP system during the quarter ended September 30, 2017. Additionally, during the quarter ended December 31, 2017, management reassessed the fair value of certain tractors within the Company's leasing subsidiary, Interstate Equipment Leasing, LLC, determining that there was an impairment loss.
3"Legal accruals" in the fourth quarter of 2019 include additional legal costs within the non-reportable segments, reflecting revised estimates for various pre-2017 Merger legal matters which were previously disclosed by Swift. During the fourth quarter of 2018 we incurred expenses related to certain class action lawsuits involving employment-related claims. The amounts are included in "Miscellaneous operating expenses" in the consolidated statements of comprehensive income.
4"Other merger-related operating expenses" represent one-time expenses associated with the 2017 Merger, including acceleration of stock compensation expense, bonuses, and other operating expenses.
5Knight-Swift incurred certain merger-related expenses associated with the 2017 Merger, consisting of legal and professional fees.
6Severance expenses were incurred during the third and fourth quarters of 2018 in relation to certain organizational changes at Swift.
7For 2019, an effective tax rate of 24.6% was applied in our 2019 Adjusted EPS calculation to normalize permanent differences pertaining to a Value Added Tax ("VAT") adjustment within Swift's Mexico operations. The adjustment pertains to pre-2017 Merger VAT receivables from 2016 and prior years that have been deemed unrecoverable as of December 31, 2019. For 2017, a normalized effective tax rate of 37.5% was utilized to calculate "Provision for income tax expense at effective rate," as the actual effective tax rate for the year includes a significant income tax benefit representing management's estimate of the net impact of the Tax Cuts and Jobs Act passed during the fourth quarter of 2017.

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Non-GAAP Reconciliation: Consolidated Adjusted Operating Income and Adjusted Operating Ratio
 2019 2018 (recast) 2017 (recast) 2016 2015
GAAP Presentation(Dollars in thousands)
Total revenue$4,843,950
 $5,344,066
 $2,425,453
 $1,118,034
 $1,182,964
Total operating expenses(4,416,512) (4,775,023) (2,224,823) (969,555) (1,004,964)
Operating income$427,438
 $569,043
 $200,630
 $148,479
 $178,000
Operating ratio91.2% 89.4% 91.7% 86.7% 85.0%
          
Non-GAAP Presentation         
Total revenue$4,843,950
 $5,344,066
 $2,425,453
 $1,118,034
 $1,182,964
Trucking fuel surcharge(448,618) (534,398) (225,970) (89,886) (121,225)
Revenue, excluding trucking fuel surcharge4,395,332
 4,809,668
 2,199,483
 1,028,148
 1,061,739
          
Total operating expenses4,416,512
 4,775,023
 2,224,823
 969,555
 1,004,964
Adjusted for:         
Trucking fuel surcharge(448,618) (534,398) (225,970) (89,886) (121,225)
Amortization of intangibles ¹(42,876) (42,584) (12,872) 
 
Impairments ²(3,486) (2,798) (16,844) 
 
Legal accruals ³(35,840) (1,000) (1,900) (2,450) (7,163)
Other merger-related operating expenses 4

 
 (6,596) 
 
Merger-related costs 5

 
 (16,516) 
 
Severance expense 6

 (1,958) 
 
 
Adjusted Operating Expenses3,885,692
 4,192,285
 1,944,125
 877,219
 876,576
Adjusted Operating Income$509,640
 $617,383
 $255,358
 $150,929
 $185,163
Adjusted Operating Ratio88.4% 87.2% 88.4% 85.3% 82.6%
1See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 1.
2See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 2.
3See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 3.
4See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 4.
5See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 5.
6
See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 6.

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Non-GAAP Reconciliation: Reportable Segment Adjusted Operating Income and Adjusted Operating Ratio
Trucking Segment
 2019 2018 (recast) 2017 (recast)
GAAP Presentation(Dollars in thousands)
Total revenue$3,952,866
 $4,290,254
 $1,970,326
Total operating expenses(3,484,117) (3,739,436) (1,767,068)
Operating income$468,749
 $550,818
 $203,258
Operating ratio88.1% 87.2% 89.7%
      
Non-GAAP Presentation   
Total revenue$3,952,866
 $4,290,254
 $1,970,326
Fuel surcharge(448,618) (534,398) (225,970)
Intersegment transactions(157) (242) (129)
Revenue, excluding fuel surcharge and intersegment transactions3,504,091
 3,755,614
 1,744,227
      
Total operating expenses3,484,117
 3,739,436
 1,767,068
Adjusted for:     
Fuel surcharge(448,618) (534,398) (225,970)
Intersegment transactions(157) (242) (129)
Amortization of intangibles ¹(1,371) (1,209) 
Impairments ²(2,417) (1,640) 
Legal accruals ³
 
 (1,900)
Other merger-related operating expenses 4

 
 (6,596)
Merger-related costs 5

 
 (16,516)
Adjusted Operating Expenses3,031,554
 3,201,947
 1,515,957
Adjusted Operating Income$472,537
 $553,667
 $228,270
Adjusted Operating Ratio86.5% 85.3% 86.9%
1"Amortization of intangibles" reflects the non-cash amortization expense relating to intangible assets identified in the Abilene Acquisition and historical Knight acquisitions.
2See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 2.
3See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 3.
4See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 4.
5
See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 5.

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Logistics Segment
The Logistics segment is less asset-intensive than the Truckload and LTL segments and is dependent upon capable non-driver employees, modern and effective information technology, and third-party capacity providers. Logistics revenue is generated by its brokerage operations. We generate additional revenue by offering specialized logistics solutions (including, but not limited to, trailing equipment, origin management, surge volume, disaster relief, special projects, and other logistic needs). Logistics revenue is mainly affected by the rates we obtain from customers, the freight volumes we ship through third-party capacity providers, and our ability to secure third-party capacity providers to transport customer freight.
The most significant expense in the Logistics segment is purchased transportation that we pay to third-party capacity providers, which is a primarily variable cost, and is included in "Purchased transportation" in the consolidated statements of comprehensive income. Variability in this expense depends on truckload capacity, availability of third-party capacity providers, rates charged to customers, current freight demand, and customer shipping needs. Fixed Logistics operating expenses primarily include non-driver employee compensation and benefits recorded in "Salaries, wages, and benefits" and depreciation and amortization expense recorded in "Depreciation and amortization of property and equipment" in the consolidated statements of comprehensive income.
202120202021 vs. 2020
(Dollars in thousands, except per load data)Increase (decrease)
Total revenue$817,003 $375,841 117.4  %
Revenue, excluding intersegment transactions$798,689 $365,099 118.8  %
GAAP: Operating income$93,920 $20,245 363.9  %
Non-GAAP: Adjusted Operating Income 1 2
$94,685 $20,245 367.7  %
Revenue per load 2
$2,439 $1,689 44.4  %
Gross margin percentage 2
18.1 %14.5 %360  bps
GAAP: Operating ratio 2
88.5 %94.6 %(610  bps)
Non-GAAP: Adjusted Operating Ratio 1 2
88.1 %94.5 %(640  bps)
1Refer to "Non-GAAP Financial Measures" below.
2Defined under "Operating Statistics" above.
2021 Compared to 2020Demand for our logistics service offering continued to grow throughout the year, as we continue to leverage our fleet of approximately 70,000 trailers for our Power-only service offering. Logistics revenue, excluding intersegment transactions increased 118.8% as we grew load count by 51.5%, while increasing revenue per load by 44.4%. The Adjusted Operating Ratio improved to 88.1%, resulting in a 367.7% increase in Adjusted Operating Income. Gross margin was 18.1% in 2021, compared to 14.5% in 2020.
Within our Power-only service offering, which excludes the operations of our intermodal, drayage, and port services, revenue grew by 314.3% as a result of a 104.2% increase in load volumes. Our Power-only service offering represented approximately 32.8% of brokerage load volumes during 2021. During 2021, through our Select platform, we digitally matched an average of approximately 5,500 carriers per quarter to available loads.
45
 2019 2018 (recast) 2017 (recast)
GAAP Presentation(Dollars in thousands)
Total revenue$352,988
 $436,044
 $235,925
Total operating expenses(331,119) (404,053) (220,757)
Operating income$21,869
 $31,991
 $15,168
Operating ratio93.8% 92.7% 93.6%
      
Non-GAAP Presentation     
Total revenue$352,988
 $436,044
 $235,925
Intersegment transactions(9,105) (9,374) (7,815)
Revenue, excluding intersegment transactions343,883
 426,670
 228,110
      
Total operating expenses331,119
 404,053
 220,757
Adjusted for:     
Intersegment transactions(9,105) (9,374) (7,815)
Impairments ¹(621) (794) 
Adjusted Operating Expenses321,393
 393,885
 212,942
Adjusted Operating Income$22,490
 $32,785
 $15,168
Adjusted Operating Ratio93.5% 92.3% 93.4%
1See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 2.
Intermodal Segment
 2019 2018 (recast) 2017 (recast)
GAAP Presentation(Dollars in thousands)
Total revenue$455,466
 $498,821
 $150,326
Total operating expenses(450,965) (467,549) (143,285)
Operating income$4,501
 $31,272
 $7,041
Operating ratio99.0% 93.7% 95.3%
      
Non-GAAP Presentation   
Total revenue$455,466
 $498,821
 $150,326
Intersegment transactions(1,488) (1,223) (420)
Revenue, excluding intersegment transactions453,978
 497,598
 149,906
      
Total operating expenses450,965
 467,549
 143,285
Adjusted for:     
Intersegment transactions(1,488) (1,223) (420)
Impairments ¹
 (45) 
Adjusted Operating Expenses449,477
 466,281
 142,865
Adjusted Operating Income$4,501
 $31,317
 $7,041
Adjusted Operating Ratio99.0% 93.7% 95.3%
1See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 2.


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LTL Segment
Our LTL segment was established in 2021 by the ACT and MME acquisitions and consists of regional motor carriers headquartered in Dothan, Alabama and Bismarck, North Dakota. We provide regional direct service and serve our customers' national transportation needs by utilizing key partner carriers for coverage areas outside of our network. We primarily generate revenue by transporting freight for our customers through our core LTL services.
Our revenues are impacted by shipment volume and tonnage levels that flow through our network. Additional revenues are generated through fuel surcharges and accessorial services provided during transit from shipment origin to destination. We focus on the following multiple revenue generation factors when reviewing revenue yield: revenue per hundredweight, revenue per shipment, weight per shipment, and length of haul. Fluctuation within each of these metrics is analyzed when determining the revenue quality of our customers' shipment density.
Our most significant expense is related to direct costs associated with the transportation of our freight moves including; direct salary, wage and benefit costs, fuel expense, and depreciation expense associated with revenue equipment costs. Other expenses associated with revenue generation that can fluctuate and impact operating results are insurance and claims expense as well as maintenance costs of our revenue equipment. These expenses can be influenced by multiple factors including our safety performance, equipment age, and other factors. A key component to lowering our operating costs is labor efficiency within our network. We continue to focus on technological advances to improve the customer experience and reduce our operating costs.
Note: In accordance with the accounting treatment applicable to the ACT and MME acquisitions, the LTL segment's reported results do not include the operating results of the acquired entities prior to the respective acquisition dates.
2021
(Dollars in thousands, except per shipment and per hundredweight data)
Total revenue$396,308 
Revenue, excluding fuel surcharge$345,785 
GAAP: Operating income$31,169 
Non-GAAP: Adjusted Operating Income 1
$38,293 
GAAP: Operating ratio 2
92.1 %
Non-GAAP: Adjusted Operating Ratio 1 2
88.9 %
Shipments per day 2
16,438 
Weight per shipment 2
1,111 
Average length of haul (miles) 2
518 
Revenue per shipment 2
$161.66 
Revenue xFSR per shipment 2
$141.57 
Revenue per hundredweight 2
$14.55 
Revenue xFSR per hundredweight 2
$12.75 
Average tractors 2 3
2,735 
Average trailers 2 4
7,413 
1Refer to "Non-GAAP Financial Measures" below.
2Defined under "Operating Statistics," above.
3Includes 667 tractors from ACT's and MME's dedicated and other businesses for 2021.
4Includes 860 trailers from ACT's and MME's dedicated and other businesses for 2021.
Our LTL segment operates across approximately 100 facilities with a door count of over 4,200. We generated $345.8 million in revenue, excluding fuel surcharge and an 88.9% Adjusted Operating Ratio during 2021 within the LTL segment. Revenue, excluding fuel surcharge, per hundredweight was $12.75, while revenue per shipment, excluding fuel surcharge, was $141.57.
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Intermodal Segment
The Intermodal segment complements our regional operating model, allows us to better serve customers in longer haul lanes, and reduces our investment in fixed assets. Through the Intermodal segment, we generate revenue by moving freight over the rail in our containers and other trailing equipment, combined with revenue for drayage to transport loads between railheads and customer locations. The most significant expense in the Intermodal segment is the cost of purchased transportation that we pay to third-party capacity providers (including rail providers), which is primarily variable and included in "Purchased transportation" in the consolidated statements of comprehensive income. Purchased transportation varies as it relates to rail capacity, freight demand, and customer shipping needs. The main fixed costs in the Intermodal segment are depreciation of our company tractors related to drayage, containers, and chassis, as well as non-driver employee compensation and benefits.
202120202021 vs. 2020
(Dollars in thousands, except per load data)Increase (decrease)
Total revenue$458,867 $391,462 17.2  %
Revenue, excluding intersegment transactions$458,583 $391,098 17.3  %
GAAP: Operating income (loss)$42,060 $(943)4,560.2  %
Non-GAAP: Adjusted Operating Income (Loss) 1 2
$42,060 $(830)5,167.5  %
Average revenue per load 2
$2,852 $2,342 21.8  %
GAAP: Operating ratio 2
90.8 %100.2 %(940  bps)
Non-GAAP: Adjusted Operating Ratio 1 2
90.8 %100.2 %(940  bps)
Load count160,774 166,977 (3.7  %)
Average tractors 2 3
597 577 3.5  %
Average containers 2
10,847 10,604 2.3  %
1Refer to "Non-GAAP Financial Measures" below.
2Defined within "Operating Statistics" above.
3Includes 543 and 518 company-owned tractors for 2021 and 2020, respectively.
2021 Compared to 2020 Revenue grew by 17.2% while the Adjusted Operating Ratio improved from 100.2% in 2020 to 90.8% in 2021, resulting in a $42.9 million increase in Adjusted Operating Income. Continued rail congestion and rail allocations resulted in a reduction of load count, but contributed to a 21.8% increase in revenue per load.
We anticipate operational improvements in cost structure and network design as we continue to transition to a new western rail partner in the first quarter of 2022. To position Intermodal for continued growth, we are in the process of growing our container count and plan to add approximately 2,000 containers during the year. Our long-term structural improvements in the margins of our business are ultimately expected to lead to an Adjusted Operating Ratio in the high-80s to mid-90s. We expect load volumes to increase in the back half of the year.
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Non-reportable Segments
The non-reportable segments include support services provided to our customers and independent contractors (including repair and maintenance shop services, equipment leasing, warranty services, and insurance), trailer parts manufacturing, warehousing, and certain driving academy activities, as well as certain corporate expenses (such as legal settlements and accruals, certain impairments, and $46.1 million in annual amortization of intangibles related to the 2017 Merger and various acquisitions).
202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Total revenue$306,414 $188,882 62.2  %
Operating income (loss)$14,112 $(33,376)142.3  %
2021 Compared to 2020Strong demand for the services within our non-reportable segments led to 62.2% revenue growth, which resulted in operating income improving by 142.3%. The revenue growth was primarily related to expanded services to third-party carriers (including insurance through Iron Truck Services), increased demand for our equipment leasing services, and revenue improvement within our warehousing activities. In 2020, profitability was negatively impacted by the $6.7 million of expense associated with the change in fair value of a deferred earnout related to the 2020 acquisition of a warehousing company and a $4.0 million impairment of an investment related to alternative fuel technology.
Results of Operations — Consolidated Operating and Other Expenses
Consolidated Operating Expenses
The following tables present certain operating expenses from our consolidated statements of comprehensive income, including each operating expense as a percentage of total revenue and as a percentage of revenue, excluding truckload and LTL fuel surcharge. Truckload and LTL fuel surcharge revenue can be volatile and is primarily dependent upon the cost of fuel, rather than operating expenses unrelated to fuel. Therefore, we believe that revenue, excluding truckload and LTL fuel surcharge is a better measure for analyzing many of our expenses and operating metrics.
Note: In accordance with accounting treatment applicable to each of our recent acquisitions, Knight-Swift's reported results do not include the operating results of the acquired entities prior to the respective acquisition dates. Accordingly, comparisons between the Company's 2021 results and prior periods may not be meaningful. Refer to Note 1 in Part II, Item 8 of this Annual Report for a list of our recent acquisitions.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Salaries, wages, and benefits$1,771,772 $1,483,188 19.5  %
% of total revenue29.5 %31.7 %(220  bps)
% of revenue, excluding truckload and LTL fuel surcharge32.0 %33.9 %(190  bps)
Salaries, wages, and benefits expense is primarily affected by the total number of miles driven by company driving associates, the rates we pay our company driving associates, and employee benefits, including healthcare, workers' compensation and other benefits. To a lesser extent, non-driver employee headcount, compensation, and benefits affect this expense. Driving associate wages represent the largest component of salaries, wages, and benefits expense.
Several ongoing market factors have reduced the pool of available driving associates, contributing to a challenging driver sourcing market, which we believe will continue. Having a sufficient number of qualified driving associates is our biggest headwind, although we continue to seek ways to attract and retain qualified driving associates, including heavily investing in our recruiting efforts, our driving academies, technology, our equipment, and terminals that improve the experience of driving associates. We expect driving associate pay to remain inflationary, which we expect will result in additional driving associate pay increases in the future, thereby increasing our salaries, wages, and benefits expense.
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2021 Compared to 2020The increase in consolidated salaries, wages, and benefits includes $222.8 million from the results of ACT. The remaining increase pertained to driving associate pay rates and non-driver salaries and wages, partially offset by an 11.6% decrease in miles driven by company driving associates, excluding ACT.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Fuel$546,256 $416,307 31.2  %
% of total revenue9.1 %8.9 %20  bps
% of revenue, excluding truckload and LTL fuel surcharge9.9 %9.5 %40  bps
Fuel expense consists primarily of diesel fuel expense for our company-owned tractors and fuel taxes. The primary factors affecting our fuel expense are the cost of diesel fuel, the fuel economy of our equipment, and the miles driven by company driving associates.
Our fuel surcharge programs help to offset increases in fuel prices, but apply only to loaded miles and typically do not offset non-paid empty miles, idle time, and out-of-route miles driven. Typical fuel surcharge programs involve a computation based on the change in national or regional fuel prices. These programs may update as often as weekly, but typically require a specified minimum change in fuel cost to prompt a change in fuel surcharge revenue for our Truckload segment. Therefore, many of these programs have a time lag between when fuel costs change and when the change is reflected in fuel surcharge revenue. Due to this time lag, our fuel expense, net of fuel surcharge, negatively impacts our operating income during periods of sharply rising fuel costs and positively impacts our operating income during periods of falling fuel costs. We continue to utilize our fuel efficiency initiatives such as trailer blades, idle-control, management of tractor speeds, fleet updates for more fuel-efficient engines, management of fuel procurement, and driving associate training programs that we believe contribute to controlling our fuel expense.
2021 Compared to 2020The increase in consolidated fuel expense includes $33.7 million of fuel expense from ACT's results. The remaining difference is primarily due to an increase in the average DOE fuel price to $3.29 per gallon in 2021 from $2.56 per gallon in 2020, partially offset by an 11.6% reduction in the total miles driven by company driving associates, excluding ACT.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Operations and maintenance$313,505 $275,290 13.9  %
% of total revenue5.2 %5.9 %(70  bps)
% of revenue, excluding truckload and LTL fuel surcharge5.7 %6.3 %(60  bps)
Operations and maintenance expense consists of direct operating expenses, such as driving associate hiring and recruiting expenses, equipment maintenance, and tire expense. Operations and maintenance expenses are primarily affected by the age of our company-owned fleet of tractors and trailers and the miles driven. We expect the driver market to remain competitive in 2022, which could increase future driving associate development and recruiting costs and negatively affect our operations and maintenance expense. We expect to continue refreshing our fleet in the coming quarters to maintain or improve the average age of our equipment.
2021 Compared to 2020The increase in consolidated operations and maintenance expense includes $18.8 million in operations and maintenance expense from ACT's results. The remaining increase was attributed to higher driving associate hiring expenses and was partially offset by the decrease in miles driven by company driving associates discussed above.
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 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Insurance and claims$275,378 $192,840 42.8  %
% of total revenue4.6 %4.1 %50  bps
% of revenue, excluding truckload and LTL fuel surcharge5.0 %4.4 %60  bps
Insurance and claims expense consists of premiums for liability, physical damage, and cargo, and will vary based upon the frequency and severity of claims, our level of self-insurance, and premium expense. In recent years, insurance carriers have raised premiums for many businesses, including transportation companies, and as a result, our insurance and claims expense could increase in the future, or we could raise our self-insured retention limits or reduce excess coverage limits when our policies are renewed or replaced. In 2021, we expanded our insurance offerings to third-party carriers, earning additional premium revenues, which were partially offset by increased insurance reserves. Insurance and claims expense also varies based on the number of miles driven by company driving associates and independent contractors, the frequency and severity of accidents, trends in development factors used in actuarial accruals, and developments in large, prior-year claims. In future periods, our higher self-insured retention limits or lower excess coverage limits may cause increased volatility in our consolidated insurance and claims expense.
2021 Compared to 2020Consolidated insurance and claims expense increased partially due to the inclusion of $15.8 million of insurance and claims expense from ACT's results. The remaining increase was primarily due to insurance reserves incurred through our third-party carrier insurance program.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Operating taxes and licenses$98,784 $87,422 13.0  %
% of total revenue1.6 %1.9 %(30  bps)
% of revenue, excluding truckload and LTL fuel surcharge1.8 %2.0 %(20  bps)
Operating taxes and licenses include state franchise taxes, state and federal highway use taxes, property taxes, vehicle license and registration fees, fuel and mileage taxes, among others. The expense is impacted by changes in the tax rates and registration fees associated with our tractor fleet and regional operating facilities.
2021 Compared to 2020The increase in consolidated operating taxes and licenses expense is primarily due to the inclusion of $13.5 million of operating taxes and licenses expense from ACT's results.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Communications$22,486 $19,596 14.7  %
% of total revenue0.4 %0.4 %—  bps
% of revenue, excluding truckload and LTL fuel surcharge0.4 %0.4 %—  bps
Communications expense is comprised of costs associated with our tractor and trailer tracking systems, information technology systems, and phone systems.
2021 Compared to 2020The increase in consolidated communications expense is primarily due to the inclusion of $2.0 million of communications expense from ACT's results.
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 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Depreciation and amortization of property and equipment$522,596 $460,775 13.4  %
% of total revenue8.7 %9.9 %(120  bps)
% of revenue, excluding truckload and LTL fuel surcharge9.4 %10.5 %(110  bps)
Depreciation relates primarily to our owned tractors, trailers, buildings, ELDs, other communication units, and other similar assets. Changes to this fixed cost are generally attributed to increases or decreases to company-owned equipment, the relative percentage of owned versus leased equipment, and fluctuations in new equipment purchase prices, which have historically been precipitated in part by new or proposed federal and state regulations. Depreciation can also be affected by the cost of used equipment that we sell or trade, and the replacement of older used equipment. Management periodically reviews the condition, average age, and reasonableness of estimated useful lives and salvage values of our equipment and considers such factors in light of our experience with similar assets, used equipment market conditions, and prevailing industry practice.
2021 Compared to 2020The increase in consolidated depreciation and amortization of property and equipment includes $24.8 million of expense from ACT's results. The remaining increase is primarily due to an increase in owned versus leased equipment.
We expect consolidated depreciation and amortization of property and equipment to increase both in total and as a percentage of consolidated revenue, excluding truckload and LTL fuel surcharge, as we currently do not plan to use operating leases as a primary means of funding our equipment purchases in 2022.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Amortization of intangibles$55,299 $45,895 20.5  %
% of total revenue0.9 %1.0 %(10  bps)
% of revenue, excluding truckload and LTL fuel surcharge1.0 %1.1 %(10  bps)
Amortization of intangibles relates to intangible assets identified with the 2017 Merger, ACT Acquisition and other acquisitions. See Note 4 and Note 10 in Part II, Item 8, of this Annual Report for further details regarding the Company's intangible assets, historical amortization, and anticipated future amortization.
2021 Compared to 2020The increase in consolidated amortization of intangibles for 2021 is attributed to the ACT, MME, UTXL, and Eleos acquisitions in 2021. See Note 4 in Part II, Item 8, of this Annual Report for more details regarding our acquisitions.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Rental expense$55,161 $86,640 (36.3  %)
% of total revenue0.9 %1.9 %(100  bps)
% of revenue, excluding truckload and LTL fuel surcharge1.0 %2.0 %(100  bps)
Rental expense consists primarily of payments for tractors and trailers financed with operating leases. The primary factors affecting the expense are the size of our revenue equipment fleet and the relative percentage of owned versus leased equipment.
2021 Compared to 2020The decrease in consolidated rental expense was primarily due to increasing our ratio of owned versus leased equipment.
We expect consolidated rental expense to continue to decrease both in total and as a percentage of consolidated revenue, excluding truckload and LTL fuel surcharge, as we currently do not plan to use operating leases as a primary means of funding our equipment purchases in 2022.
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 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Purchased transportation$1,320,888 $936,649 41.0  %
% of total revenue22.0 %20.0 %200  bps
% of revenue, excluding truckload and LTL fuel surcharge23.9 %21.4 %250  bps
Purchased transportation expense is comprised of payments to independent contractors in our trucking operations, as well as payments to third-party capacity providers related to logistics, freight management, and non-trucking services in our logistics and intermodal businesses. Purchased transportation is generally affected by capacity in the market as well as changes in fuel prices. As capacity tightens, our payments to third-party capacity providers and to independent contractors tend to increase. Additionally, as fuel prices increase, payments to third-party capacity providers and independent contractors increase.
2021 Compared to 2020The increase in consolidated purchased transportation expense is primarily due to payments made to third-party carriers, partially offset by a 14.0% decrease in miles driven by independent contractors.
We expect consolidated purchased transportation will increase as a percentage of revenue if we grow our logistics and intermodal businesses faster than our full truckload and LTL businesses. The increase could be partially offset if independent contractors exit the market due to regulatory changes.
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Impairments$299 $5,335 (94.4  %)
2021 Compared to 2020In 2021, we incurred impairment charges associated with revenue equipment held for sale and trailer tracking systems (within our Truckload and non-reportable segments). During 2020, impairments were related to investments in certain alternative fuel technology (within the non-reportable segments), certain tractors (within the Truckload segment), certain legacy trailers (within the non-reportable segments) as a result of a softer used equipment market, and trailer tracking equipment (within the Truckload segment).
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Miscellaneous operating expenses$49,898 $99,488 (49.8  %)
Miscellaneous operating expenses primarily consists of legal and professional services fees, general and administrative expenses, and other costs, net of gain on sales of equipment.
2021 Compared to 2020Net consolidated miscellaneous operating expenses includes $16.9 million of additional expense in 2021 from ACT's operating results. Excluding the results of ACT, the expense decreased by $66.5 million, primarily due to a year-over-year increase in gain on sales of equipment.
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Consolidated Other Expenses, net
The following table summarizes fluctuations in certain non-operating expenses, included in our consolidated statements of comprehensive income:
 202120202021 vs. 2020
(Dollars in thousands)Increase (decrease)
Interest income$(1,173)$(1,928)(39.2  %)
Interest expense$21,140 $17,309 22.1  %
Other income, net$(28,905)$(11,254)156.8  %
Income tax expense$230,887 $149,676 54.3  %
Interest income — Interest income includes interest earned from financing revenue equipment to independent contractors, as well as interest earned from our investments.
2021 Compared to 2020The decrease in consolidated interest income is primarily due to the rebalancing of our portfolio to cash and cash equivalents investments, due to lower yields from other types of short-term investments during 2021.
Interest expense —Interest expense is comprised of debt and finance lease interest expense as well as amortization of deferred loan costs.
2021 Compared to 2020Consolidated interest expense increased due to higher overall debt balances from the 2021 Debt Agreement which was entered into on September 3, 2021 and replaced the July 2021 Term Loan and 2017 Debt Agreement. See Note 15 in Part II, Item 8 of this Annual Report for further information related to the 2021 Debt Agreement and related interest rates and deferred loan costs.
Other income, net —Other income, net is primarily comprised of income from unrealized gains and (losses) from our various equity investments, including our Embark and TRP investments, as well as certain other non-operating income and expense items that may arise outside of the normal course of business. See Note 6 in Part II, Item 8, of this Annual Report.
2021 Compared to 2020The increase in consolidated other income is primarily due to unrealized gains recognized from our investment in Embark and an increase in unrealized gains recognized from other investments within our portfolio.
Income tax expense — In addition to the discussion below, Note 13 in Part II, Item 8 of this Annual Report provides further analysis related to income taxes.
2021 Compared to 2020The increase in consolidated income tax expense was primarily due to an increase in income before income taxes which was partially offset by a reduction in the state deferred tax liability due to our recent acquisitions and adjustments to state tax rates and apportionment. All these factors resulted in a 2021 effective tax rate of 23.7% and a 2020 effective tax rate of 26.7%.
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Non-GAAP Financial Measures
The terms "Adjusted Net Income Attributable to Knight-Swift," "Adjusted EPS," "Adjusted Operating Income," "Adjusted Operating Ratio", and "Free Cash Flows," as we define them, are not presented in accordance with GAAP. These financial measures supplement our GAAP results in evaluating certain aspects of our business. We believe that using these measures improves comparability in analyzing our performance because they remove the impact of items from our operating results that, in our opinion, do not reflect our core operating performance. Management and the Board focus on Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, Adjusted Operating Income, Adjusted Operating Ratio, and Free Cash Flows as key measures of our performance, all of which are reconciled to the most comparable GAAP financial measures and further discussed below. We believe our presentation of these non-GAAP financial measures is useful because it provides investors and securities analysts the same information that we use internally for purposes of assessing our core operating performance.
Adjusted Net Income Attributable to Knight-Swift, Adjusted EPS, Adjusted Operating Income, Adjusted Operating Ratio, and Free Cash Flows are not substitutes for their comparable GAAP financial measures, such as net income, cash flows from operating activities, operating income, operating margin, or other measures prescribed by GAAP. There are limitations to using non-GAAP financial measures. Although we believe that they improve comparability in analyzing our period to period performance, they could limit comparability to other companies in our industry if those companies define these measures differently. Because of these limitations, our non-GAAP financial measures should not be considered measures of income generated by our business or discretionary cash available to us to invest in the growth of our business. Management compensates for these limitations by primarily relying on GAAP results and using non-GAAP financial measures on a supplemental basis.
Pursuant to the requirements of Regulation G, the following tables reconcile GAAP consolidated net income attributable to Knight-Swift to non-GAAP consolidated Adjusted Net Income attributable to Knight-Swift, GAAP consolidated earnings per diluted share to non-GAAP consolidated Adjusted Earnings per Diluted Share, GAAP consolidated operating ratio to non-GAAP consolidated Adjusted Operating Ratio, GAAP reportable segment operating income to non-GAAP reportable segment Adjusted Operating Income, and GAAP reportable segment operating ratio to non-GAAP reportable segment Adjusted Operating Ratio.
Note regarding presentation: A discussion in changes in our results of operations from 2019 to 2020 has been omitted from this Annual Report, but may be found in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of our 2020 Annual Report filed with the SEC on February 25, 2021.
Non-GAAP Reconciliation:
Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS
20212020
(Dollars in thousands)
GAAP: Net income attributable to Knight-Swift$743,388 $410,002 
Adjusted for:
Income tax expense attributable to Knight-Swift230,887 149,676 
Income before income taxes attributable to Knight-Swift974,275 559,678 
Amortization of intangibles 1
55,299 45,895 
Change in fair value of deferred earnout 2
— 6,730 
Impairments 3
299 5,335 
Legal accruals 4
(2,481)6,160 
COVID-19 incremental costs 5
— 12,259 
Transaction fees 6
4,445 — 
Write-off of deferred debt issuance costs 7
1,024 — 
Adjusted income before income taxes1,032,861 636,057 
Provision for income tax expense at effective rate(244,680)(169,910)
Non-GAAP: Adjusted Net Income Attributable to Knight-Swift$788,181 $466,147 
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Note: Since the numbers reflected in the table below are calculated on a per share basis, they may not foot due to rounding.
20212020
GAAP: Earnings per diluted share$4.45 $2.40 
Adjusted for:
Income tax expense attributable to Knight-Swift1.38 0.88 
Income before income taxes attributable to Knight-Swift5.83 3.28 
Amortization of intangibles 1
0.33 0.27 
Change in fair value of deferred earnout 2
— 0.04 
Impairments 3
— 0.03 
Legal accruals 4
(0.01)0.04 
COVID-19 incremental costs 5
— 0.07 
Transaction fees 6
0.03 — 
Write-off of deferred debt issuance costs 7
0.01 — 
Adjusted income before income taxes6.18 3.73 
Provision for income tax expense at effective rate(1.46)(1.00)
Non-GAAP: Adjusted EPS$4.72 $2.73 
1"Amortization of intangibles" reflects the non-cash amortization expense relating to intangible assets identified in the 2017 Merger, the July 5, 2021 ACT Acquisition, and other acquisitions.
2"Change in fair value of deferred earnout" reflects the expense for the change in fair value of a deferred earnout related to the acquisition of a warehousing company, which is recorded in "Miscellaneous operating expenses."
3"Impairments" reflects the following non-cash impairments:
During 2021, impairments related to certain revenue equipment held for sale (within the non-reportable segments and the Truckload segment);
During 2020, impairments related to investments in certain alternative fuel technology (within the non-reportable segments), certain tractors (within the Truckload segment), certain legacy trailers (within the non-reportable segments) as a result of a softer used equipment market, and trailer tracking equipment (within the Truckload segment).
4"Legal accruals" are included in "Miscellaneous operating expenses" in the consolidated statements of comprehensive income and reflect the following:
During 2021, the reversal of an accrued legal matter previously identified as probable in 2019 was based on a recent decision of the appellate court, resulting in a change to a remote likelihood that a loss was incurred. Additional 2021 legal costs relate to certain class action lawsuits arising from employee and contract related matters.
During 2020, costs related to certain class action lawsuits arising from employee and contract related matters.
5"COVID-19 incremental costs" reflects costs incurred during 2020 that were directly attributable to the pandemic and were incremental to those incurred prior to the outbreak. These include payroll premiums paid to our driving associates and shop mechanics, additional disinfectants and cleaning supplies, and various other pandemic-specific items. The costs are clearly separable from our normal business operations and are not expected to recur once the pandemic subsides.
6"Transaction fees" consisted of legal and professional fees associated with the acquisitions of UTXL, ACT, and MME. The transaction fees are included within "Miscellaneous operating expenses" in the consolidated statements of comprehensive income.
7"Write-off of deferred debt issuance costs" was incurred from replacing the 2017 Debt Agreement with the 2021 Debt Agreement.
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Non-GAAP Reconciliation: Consolidated Adjusted Operating Income and Adjusted Operating Ratio
20212020
GAAP Presentation(Dollars in thousands)
Total revenue$5,998,019 $4,673,863 
Total operating expenses(5,032,322)(4,109,425)
Operating income$965,697 $564,438 
Operating ratio83.9 %87.9 %
Non-GAAP Presentation
Total revenue$5,998,019 $4,673,863 
Truckload and LTL fuel surcharge(466,129)(304,656)
Revenue, excluding truckload and LTL fuel surcharge5,531,890 4,369,207 
Total operating expenses5,032,322 4,109,425 
Adjusted for:
Truckload and LTL fuel surcharge(466,129)(304,656)
Amortization of intangibles 1
(55,299)(45,895)
Change in fair value of deferred earnout 2
— (6,730)
Impairments 3
(299)(5,335)
Legal accruals 4
2,481 (6,160)
COVID-19 incremental costs 5
— (12,259)
Transaction fees 6
(4,445)— 
Adjusted Operating Expenses4,508,631 3,728,390 
Adjusted Operating Income$1,023,259 $640,817 
Adjusted Operating Ratio81.5 %85.3 %
1See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 1.
2See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 2.
3See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote3.
4See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote4.
5See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote5.
6See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 6.
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Non-GAAP Reconciliation: Reportable Segment Adjusted Operating Income and Adjusted Operating Ratio
Truckload Segment
20212020
GAAP Presentation(Dollars in thousands)
Total revenue$4,098,005 $3,786,030 
Total operating expenses(3,313,569)(3,207,518)
Operating income$784,436 $578,512 
Operating ratio80.9 %84.7 %
Non-GAAP Presentation
Total revenue$4,098,005 $3,786,030 
Fuel surcharge(415,606)(304,656)
Intersegment transactions(1,128)(753)
Revenue, excluding fuel surcharge and intersegment transactions3,681,271 3,480,621 
Total operating expenses3,313,569 3,207,518 
Adjusted for:
Fuel surcharge(415,606)(304,656)
Intersegment transactions(1,128)(753)
Amortization of intangibles 1
(1,295)(1,296)
Impairments 2
(41)(1,131)
COVID-19 incremental costs 3
— (12,146)
Adjusted Operating Expenses2,895,499 2,887,536 
Adjusted Operating Income$785,772 $593,085 
Adjusted Operating Ratio78.7 %83.0 %
1"Amortization of intangibles" reflects the non-cash amortization expense relating to intangible assets identified in historical Knight acquisitions.
2See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 3.
3See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 5.
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Logistics Segment
20212020
GAAP Presentation(Dollars in thousands)
Total revenue$817,003 $375,841 
Total operating expenses(723,083)(355,596)
Operating income$93,920 $20,245 
Operating ratio88.5 %94.6 %
Non-GAAP Presentation
Total revenue$817,003 $375,841 
Intersegment transactions(18,314)(10,742)
Revenue, excluding intersegment transactions798,689 365,099 
Total operating expenses723,083 355,596 
Adjusted for:
Intersegment transactions(18,314)(10,742)
Amortization of intangibles 1
(765)— 
Adjusted Operating Expenses704,004 344,854 
Adjusted Operating Income$94,685 $20,245 
Adjusted Operating Ratio88.1 %94.5 %
1"Amortization of intangibles" reflects the non-cash amortization expense relating to intangible assets identified in the UTXL acquisition.
LTL Segment
2021
GAAP Presentation(Dollars in thousands)
Total revenue$396,308 
Total operating expenses(365,139)
Operating income$31,169 
Operating ratio92.1 %
Non-GAAP Presentation
Total revenue$396,308 
Fuel surcharge(50,523)
Revenue, excluding fuel surcharge and intersegment transactions345,785 
Total operating expenses365,139 
Adjusted for:
Fuel surcharge(50,523)
Amortization of intangibles 1
(7,124)
Adjusted Operating Expenses307,492 
Adjusted Operating Income38,293 
Adjusted Operating Ratio88.9 %
1"Amortization of intangibles" reflects the non-cash amortization expense relating to intangible assets identified with the ACT Acquisition and MME Acquisition.
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Intermodal Segment
20212020
GAAP Presentation(Dollars in thousands)
Total revenue$458,867 $391,462 
Total operating expenses(416,807)(392,405)
Operating income (loss)$42,060 $(943)
Operating ratio90.8 %100.2 %
Non-GAAP Presentation
Total revenue$458,867 $391,462 
Intersegment transactions(284)(364)
Revenue, excluding intersegment transactions458,583 391,098 
Total operating expenses416,807 392,405 
Adjusted for:
Intersegment transactions(284)(364)
COVID-19 incremental costs 1
— (113)
Adjusted Operating Expenses416,523 391,928 
Adjusted Operating Income (Loss)$42,060 $(830)
Adjusted Operating Ratio90.8 %100.2 %
1See Non-GAAP Reconciliation: Consolidated Adjusted Net Income Attributable to Knight-Swift and Adjusted EPS footnote 5.
Non-GAAP Reconciliation: Free cash flow
2021
GAAP: Cash flows from operations$1,190,153 
Adjusted for:
Proceeds from sale of property and equipment, including assets held for sale252,080 
Purchases of property and equipment(534,096)
Non-GAAP: Free cash flow$908,137 

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Liquidity and Capital Resources
Sources of Liquidity
The following table presents our available sources of liquidity as of December 31, 2019:2021:
Source: Amount
  (In thousands)
Cash and cash equivalents, excluding restricted cash $159,722
Availability under Revolver, due October 2022 ¹ 492,662
Availability under 2018 RSA, due July 2021 ² 23,259
Total unrestricted liquidity $675,643
Cash and cash equivalents – restricted ³ 42,506
Restricted investments, held-to-maturity, amortized cost ³ 8,912
Total liquidity, including restricted cash and restricted investments $727,061
   
1Source:
As of December 31, 2019, we had $279.0 million in borrowings under our $800.0 million Revolver. We additionally had Amount
(In thousands)
Cash and cash equivalents, excluding restricted cash$28.3 million in outstanding letters of credit (discussed below), leaving261,001 $492.7 million available under the Revolver.
2
Based on eligible receivables at December 31, 2019, our borrowing base for the 2018 RSA was $299.1 million, while outstanding borrowings wereAvailability under 2021 Revolver, due September 2026 $205.0 million. We additionally had $70.8 million in outstanding letters of credit (discussed below), leaving $23.3 million available under the 2018 RSA.1
775,969 
3
Availability under 2021 RSA, due April 2024 2
55,700 
Restricted cash and restricted investments are primarily held by our captive insurance companies for claims payments. "CashAvailability under 2021 Prudential Notes, issuance ending October 2023 3
80,000 
Total unrestricted liquidity$1,172,670 
Cash and cash equivalents – restricted" consists ofrestricted $41.3 million4
89,022 
Restricted investments, held-to-maturity, amortized cost , which is included in "Cash4
5,866 
Total liquidity, including restricted cash and cash equivalents — restricted" in the consolidated balance sheet and is held by Mohave and Red Rock for claims payments. The remaining restricted investments$1.21,267,558 
1As of December 31, 2021, we had $260.0 million in borrowings under our $1.1 billion 2021 Revolver. We additionally had $64.0 million in outstanding letters of credit (discussed below), leaving $776.0 million available under the 2021 Revolver.
2Based on eligible receivables at December 31, 2021, our borrowing base for the 2021 RSA was $400.0 million, while outstanding borrowings were $279.0 million. We additionally had $65.3 million in outstanding letters of credit (discussed below), leaving $55.7 million available under the 2021 RSA.
3As of December 31, 2021, we had $45.0 million outstanding principal on our shelf notes issued under our $125.0 million 2021 Prudential Notes, leaving $80.0 million available for issuance under the 2021 Prudential Notes.
4Restricted cash and restricted investments are primarily held by our captive insurance companies for claims payments. "Cash and cash equivalents – restricted" consists of $87.2 million, which is included in "Cash and cash equivalents — restricted" in the consolidated balance sheets and is held by Mohave and Red Rock for claims payments. The remaining $1.8 million is included in "Other long-term assets" and is held in escrow accounts to meet statutory requirements.
Uses of Liquidity
Our business requires substantial amounts of cash for operating activities, including salaries and wages paid to our employees, contract payments to independent contractors, insurance and claims payments, tax payments, and others. We also use large amounts of cash and credit for the following activities:
Capital ExpendituresWhen justified by customer demand, as well as our liquidity and our ability to generate acceptable returns, we make substantial cash capital expenditures to maintain a modern company tractor fleet, refresh our trailer fleet, expand our network of LTL service centers, and, to a lesser extent, fund replacement and/or growthupgrades to our terminals and technology in our revenue equipment fleet.various service offerings. We expect the net cash capital expenditures, required to maintainincluding net cash expenditures of our current fleet toLTL segment, will be in the range of $550.0$550.0 to $600.0 million to $575.0 million in 2020, but intend to keep this2022. The range as flexible as possible to appropriately respond to pending business opportunities and the overall market environment.provided excludes cash outlays for potential acquisitions. We believe we have ample flexibility with our trade cycle and purchase agreements to alter our current plans if economic or other conditions warrant.
Over the long-term, we will continue to have significant capital requirements, which may require us to seek additional borrowing, lease financing, or equity capital. The availability of financing or equity capital will depend upon our financial condition and results of operations as well as prevailing market conditions. If such additional borrowing, lease financing, or equity capital is not available at the time we need it, then we may need to borrow more under the 2021 Revolver (if not then fully drawn), extend the maturity of then-outstanding debt, rely on alternative financing arrangements, engage in asset sales, limit our fleet size, or operate our revenue equipment for longer periods.
There can be no assurance that we will be able to obtain additional debt under our existing financial arrangements to satisfy our ongoing capital requirements. However, we believe the combination of our expected cash flows, financing available through operating and capitalfinance leases, available funds under the 2018 RSA,our accounts receivable securitization, and availability under the 2021 Revolver will be sufficient to fund our expected capital expenditures for at least the next twelve months.
Refer to Note 18 in Part II, Item 8 of this Annual Report for additional discussion of our short-term and long-term
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contractual payment obligations related to purchase commitments.
Principal and Interest Payments — As of December 31, 2019,2021, we had material debt, accounts receivable securitization, and finance lease obligations of $919.2 million (gross of deferred loan costs)$2.1 billion, which are discussed under "Material Debt Agreements," below. A significant amount of ourCertain cash flows from operations are committed to minimum payments of principal and interest on our debt facilities and lease obligations. Additionally, when our financial position allows, we periodically make voluntary prepayments on our outstanding debt balances. Following
Prior to the 2017 Merger,maturity of our 2021 RSA, 2021 Term Loans, 2021 Revolver, Prudential Notes, and other debt, we expect to be contractually obligated to make interest payments of approximately $7.5 million, $46.7 million, $13.0 million, $4.5 million, and $0.2 million, respectively. Refer to Notes 14 and 15 in Part II, Item 8 of this Annual Report for additional discussion of the combined company carries substantiallyprincipal payment obligations related to the 2021 RSA and 2021 Debt Agreement.

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more debt than Knight has historically carriedthis Annual Report for additional discussion on our contractual principal and the combined company has significantly higher interest expense and exposure to interest rate fluctuations than Knight historically had.payment obligations for finance leases.
Letters of Credit — Pursuant to the terms of the 20172021 Debt Agreement and our 2018the 2021 RSA, our lenders may issue standby letters of credit on our behalf. When we have letters of credit outstanding, it reduces the availability under our $800.0 million2021 Revolver or 20182021 RSA. Standby letters of credit are typically issued for the benefit of regulatory authorities, insurance companies and state departments of insurance for the purpose of satisfying certain collateral requirements, primarily related to our automobile, workers' compensation, and general insurance liabilities.
Share Repurchases From time to time, and depending on free cash flow availability, debt levels, stock prices, general economic and market conditions, as well as Board approval, we may repurchase shares of our outstanding common stock. In May 2019, the Board authorized $250.0 million in share repurchases. The 20192020 Knight-Swift Repurchase Plan had $233.6$192.8 million available as of December 31, 2019.2021. See further details regarding our share repurchases under Note 20 in Part II, Item 8 inof this Annual Report.
Working Capital
As of December 31, 2019 and December 31, 2018, weWe had a working capital deficitsurpluses of $103.0339.5 million and a working capital surplus of $292.7 million, respectively. The change was primarily due to the Term Loan maturing on October 2, 2020, resulting in a $364.8 million reclassification from "Long term debt – less current portion" to "Finance lease liabilities and long-term debt – current portion" on the consolidated balance sheet as of December 31, 2019. We intend2021 and $83.7 million as of December 31, 2020, due to an increase in trade receivables, the April 2021 refinance of our accounts receivable securitization (resulting in a reclassification to a noncurrent liability), partially offset by the reclassification of our 2021 Term Loan priorA-1 to its maturity.a current liability (due December 2022).
Material Debt Agreements
As of December 31, 2019,2021, we had $918.8 million$2.1 billion in material debt obligations at the following carrying values:
$199.7 million: 2021 Term Loan A-1, due December 2022, net of $0.3 million in deferred loan costs
$364.8
$199.6 million: 2021 Term Loan A-2, due September 2024, net of $0.4 million in deferred loan costs
$798.4 million: 2021 Term Loan A-3, due September 2026, net of $1.6 million in deferred loan costs
$278.5 million: 2021 RSA outstanding borrowings, net of $0.5 million in deferred loan costs
$306.2 million: Finance lease obligations
$260.0 million: 2021 Revolver, due September 2026
$52.3 million: Other, net of $0.1 million: Term Loan, due October 2020, net of $0.2 million in deferred loan costs
$204.8 million: 2018 RSA outstanding borrowings, due July 2021, net of $0.2 million in deferred loan costs
$70.2 million: Finance lease obligations
$279.0 million: Revolver, due October 2022
$0.0 million: Other
As of December 31, 2018,2020, we had $929.1$913.6 million in material debt obligations at the following carrying values:
$364.6298.9 million: 2017 Term Loan, due October 2020,2022, net of $0.4$1.1 million in deferred loan costs
$239.6213.9 million: 2018 RSA outstanding borrowings, due July 2021, net of $0.4$0.1 million in deferred loan costs
$129.5190.8 million: CapitalFinance lease obligations
$195.0210.0 million: 2017 Revolver, due October 2022
$0.4 million: Other
Key terms and other details regarding our material debt obligations and finance leases are discussed in Notes 14, 15, 16, and 1716 in Part II, Item 8 inof this Annual Report, and isare incorporated by reference herein.

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Contractual Obligations
The table below summarizes our contractual obligations as of December 31, 2019, excluding deferred taxes and claims accruals:
   Payments Due By Period
 Total 1 Year or Less 1-3 Years 3-5 Years More Than
5 Years
 (In thousands)
Long-term debt obligations 1a
$365,000
 $365,000
 $
 $
 $
Revolving line of credit ¹279,000
 
 279,000
 
 
2018 RSA ¹205,000
 
 205,000
 
 
Finance lease obligations ²70,209
 12,826
 47,072
 10,311
 
Interest obligations ³42,639
 23,273
 18,782
 584
 
Operating lease obligations 4
195,275
 83,919
 71,237
 17,810
 22,309
Purchase obligations 5
579,193
 578,062
 951
 180
 
Investment commitments 6
2,465
 1,795
 160
 168
 342
ERP obligation 7
4,344
 1,930
 2,414
 
 
Dividend payable1,458
 452
 667
 339
 
Total contractual obligations$1,744,583
 $1,067,257
 $625,283
 $29,392
 $22,651
          
1Represents borrowings owed at December 31, 2019. Interest rates vary.
1a
Our Term Loan is scheduled to mature on October 2, 2020. The Company intends to refinance prior to maturity.
2
Represents principal payments owed at December 31, 2019. The borrowing consists of finance leases with finance companies, fixed borrowing amounts, and fixed interest rates, as set forth on each applicable lease schedule. Accordingly, interest on each lease varies between schedules. The Company's finance leases are typically structured with balloon payments at the end of the lease term equal to the residual value the Company is contracted to receive from certain equipment manufacturers upon sale or trade back to the manufacturers.
3Represents interest obligations on long-term debt, the 2018 RSA, and finance lease obligations. For variable rate debt, the interest rate in effect as of December 31, 2019 was utilized. The table assumes long-term debt and the 2018 RSA are held to maturity.
4Represents future monthly rental payment obligations, which include an interest element, under operating leases for tractors, trailers, chassis, and facilities. Substantially all lease agreements for revenue equipment have fixed payment terms based on the passage of time. The tractor lease agreements generally stipulate maximum miles and may provide for mileage penalties for excess miles. These leases generally run for a period of three to five years for tractors and five to seven years for trailers.
5Represents purchase obligations for revenue equipment, facilities, and non-revenue equipment, of which a significant portion is expected to be purchased with cash, to the extent available, as well as borrowings under the Revolver. Refer to Note 18 in Part II, Item 8 of this Annual Report for additional information regarding our purchase commitments.
6Investment commitments consist of contractual obligations to investments in various Transportation Resource Partnerships, which are subject to capital calls. The expected timing of the capital calls is presented above.
7ERP obligation consists of outstanding commitments related to terminating the implementation of the Swift ERP system.
Off Balance Sheet Arrangements
Information about our off balance sheet arrangements is included in Note 18 in Part II, Item 8 of this Annual Report and is incorporated by reference herein. See also "Contractual Obligations," above.

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Cash Flow Analysis
2019 2018 Change 20212020Change
(In thousands) (In thousands)
Net cash provided by operating activities$839,594
 $881,977
 $(42,383)Net cash provided by operating activities$1,190,153 $919,645 $270,508 
Net cash used in investing activities(583,706) (647,292) 63,586
Net cash used in investing activities(1,816,733)(480,712)(1,336,021)
Net cash used in financing activities(184,636) (255,442) 70,806
Net cash provided by (used in) financing activitiesNet cash provided by (used in) financing activities779,326 (443,884)1,223,210 
Net Cash Provided by Operating Activities
20192021 Compared to 20182020The $42.4$270.5 million decreaseincrease in net cash provided by operating activities was primarily due to a $62.6$214.0 million increase in federal and state income tax payments, partially offsetadditional net cash provided by various individually insignificantACT's operating activities within our working capital.in 2021.
Net Cash Used in Investing Activities
20192021 Compared to 20182020The $63.6 million decrease in netNet cash used in investing activities wasincreased by $1.3 billion, as we spent $1.5 billion on acquisitions in 2021, compared to $46.8 million in 2020.
Net Cash Provided By (Used in) Financing Activities
2021 Compared to 2020 — Net cash related to financing activities increased by $1.2 billion, primarily due to the $99.8 million decrease$1.2 billion in net cash used for acquisitions and was offset by a $39.7 million increase in net cash capital expenditures.proceeds from the 2021 Debt Agreement.
Net Cash Used in Financing Activities
2019 Compared to 2018 —We used $70.8 million less cash for financing activities, primarily as a result of decreasing our repurchases of our common stock by $92.4 million. This was partially offset by a $25.0 million net increase in repayments of our debt obligations.
Inflation
Inflation can have an impact on
Most of our operating costs. A prolonged periodexpenses are inflation-sensitive, with inflation generally leading to increased costs of operations. Price increases in manufacturer revenue equipment has impacted the cost for us to acquire new equipment. Cost increases have also impacted the cost of parts for equipment repairs and maintenance. The qualified driver shortage experienced by the trucking industry overall has had the effect of increasing compensation paid to our driving associates. We have also experienced inflation in insurance and claims cost related to health insurance and claims as well as auto liability insurance and claims. Prolonged periods of inflation could cause interest rates, fuel, wages, and other costs to increase which wouldas well. Any of these factors could adversely affect our results of operations unless freight rates correspondingly increased. Consistent with trends in the trucking industry overall, we have recently experienced inflationary pressures with respect to driver wages, as compared to prior years.
increase.
Critical Accounting Estimates
The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that impact the amounts reported in our consolidated financial statements and accompanying notes. Therefore, the reported amounts of assets, liabilities, revenue, expenses, and associated disclosures of contingent assets and liabilities are affected by these estimates and assumptions. We evaluate these estimates and assumptions on an ongoing basis, utilizing historical experience, consultation with experts, and other methods considered reasonable in the particular circumstances. Nevertheless, actual results may differ significantly from our estimates and assumptions, and it is possible that materially different amounts could be reported using differing estimates or assumptions. We consider our critical accounting estimates to be those that require us to make more significant judgments and estimates when we prepare our financial statements.
Note 2 in Part II, Item 8 of this Annual Report describes the Company's accounting policies. The following discussion should be read in conjunction with Note 2, as it presents uncertainties involved in applying the accounting policies, and provides insight into the quality of management's estimates and variability in the amounts recorded for these critical accounting estimates. Our critical accounting estimates include the following:
Claims Accruals Insurance and claims expense varies as a percentage of total revenue, based on the frequency and severity of claims incurred in a given period, as well as changes in claims development trends. The actual cost to settle our self-insured claim liabilities may differ from our reserve estimates due to legal costs, claims that have been incurred but not reported, and various other uncertainties, including the inherent difficulty in estimating the severity of the claim and the potential judgment or settlement amount to dispose of the claim. If claims development factors that

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS — CONTINUED


claims development factors that are based upon historical experience had increased by 10%, our claims accrual as of December 31, 20192021 would have potentially increased by $16.4$36.3 million.
Refer to Note 12, in Part II, Item 8 of this Annual Report for discussion about the changes in the claims accrual balance.
Goodwill and Indefinite-lived Intangible Assets The test of goodwill requires judgment, including the identification of reporting units, assigning assets (including goodwill) and liabilities to reporting units and determining the fair value of each reporting unit. Fair value of the reporting unit is determined using a combination of comparative valuation multiples of publicly traded companies, internal transaction methods, and discounted cash flow models. Estimating the fair value of reporting units includes several significant assumptions, including future cash flow estimates, determination of appropriate discount rates, and other assumptions that management believed reasonable under the circumstances. Changes in these estimates and assumptions could materially affect the determination of fair value and/or goodwill impairment for each reporting unit.
Knight-Swift evaluated its goodwill associated with the 2017 Merger the Abilene Acquisition, the Barr-Nunn acquisition and Knight's other historicalvarious acquisitions as of June 30, 20192021 and 2018.2020. The evaluations were completed using the qualitative factorsfair value measurement guidance prescribed in ASC Topic 350, Intangibles – Goodwill and Other,Other. to determine whether to performThe fair value of the two-step quantitative goodwill impairment test. The assessmentwas established using an equal weighting of qualitative factors requires judgment, including identification of reporting units, evaluation of macroeconomic conditions, analysis of industryboth the income and market conditions, measurement of cost factors, and identification of entity-specific events (such as financial performance and changes within our share price).approaches. In evaluating these qualitative factors,this quantitative analysis, the Company determined that it was more likely than not that fair value exceeded carrying value for the Company's reporting units as of June 30, 20192021 and 2018. As such, it was not necessary to perform the two-step quantitative goodwill impairment test.2020.
The test of indefinite-lived intangible assetsconsists of a comparison of the estimated fair value of thecertain trade names to their carrying values. The determination of the fair value of the trade names requires management to make significant estimates and assumptions related to forecasts of future revenues, discount rates, and royalty rates. Changes in these assumptions could materially affect the determination of the fair value of the trade names, the amount of any trade names impairment charge, or both.Management evaluated trade names for impairment as of June 30, 2019,2021 and 20182020 noting that the fair value exceeded carrying value for the trade name.
Refer to Note 10, in Part II, Item 8 of this Annual Report for discussion about the changes in the goodwill and indefinite-lived intangible asset balances.
Depreciation and AmortizationSelecting the appropriate accounting method requires management judgment, as there are multiple acceptable methods that are in accordance with GAAP, including straight-line, declining-balance, and sum-of-the-years' digits. As discussed in Note 2 included in Part II, Item 8 of this Annual Report, property and equipment is depreciated on a straight-line basis and intangible customer relationships are amortized on a straight-line basis over the estimated useful lives of the assets. We believe that these methods properly spread the costs over the useful lives of the assets. Management judgment is also involved when determining estimated useful lives of the Company's long-lived assets. We determine useful lives of our long-lived assets, based on historical experience, as well as future expectations regarding the period we expect to benefit from the asset. Factors affecting estimated useful lives of property and equipment may include estimating loss, damage, obsolescence, and company policies around maintenance and asset replacement. Factors affecting estimated useful lives of long-lived intangible assets may include legal, contractual, or other provisions that limit useful lives, historical experience with similar assets, future expectations of customer relationships, among others.
Refer to Note 10, in Part II, Item 8 of this Annual Report for discussion about the impact of the amortization of definite-lived intangibles on our results for 2021 and 2020.
Impairments of Long-lived Assets — Fair value is determined through various valuation techniques, including discounted cash flow models, quoted market values, and third-party independent appraisals, as necessary. Estimating fair value includes several significant assumptions, including future cash flow estimates, determination of appropriate discount rates, and other assumptions that management believed reasonable under the circumstances. Changes in these estimates and assumptions could materially affect the determination of fair value and/or impairment.
Refer to Note 23, in Part II, Item 8 of this Annual Report for discussion about the changes in long-lived assets and the impact on our results for 2021 and 2020.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS — CONTINUED

Income Taxes Significant management judgment is required in determining our provision for income taxes and in determining whether deferred tax assets will be realized in full or in part. We periodically assess the likelihood that all or some portion of deferred tax assets will be recovered from future taxable income. To the extent we believe the likelihood of recovery is not sufficient, a valuation allowance is established for the amount determined not to be realizable. Management judgment is necessary in determining the frequency at which we assess the need for a valuation allowance, the accounting period in which to establish the valuation allowance, as well as the amount of the valuation allowance. We believe that we have adequately provided for our future tax consequences based upon current facts and

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS — CONTINUED


circumstances and current tax law. However, should our tax positions be challenged, different outcomes could result and have a significant impact on the amounts reported in our consolidated statements of comprehensive income.
Management judgment is also required regarding a variety of other factors including the appropriateness of tax strategies. We utilize certain income tax planning strategies to reduce our overall income taxes. It is possible that certain strategies might be disallowed, resulting in an increased liability for income taxes. Significant management judgments are involved in assessing the likelihood of sustaining the strategies and determining the likely range of defense and settlement costs, in the event that tax strategies are challenged by taxing authorities. An ultimate result worse than our expectations could adversely affect our results of operations.
Refer to Note 13, in Part II, Item 8 of this Annual Report for discussion about the changes in the balances of deferred taxes assets and related valuation allowances.
Operating Leases In accordance with ASC Topic 842, Leases, property and equipment held under operating leases are recorded as right-of-use assets, with a corresponding liability. All expenses related to operating leases are reflected in our consolidated statements of comprehensive income in "Rental expense." At the inception of a lease, management judgment is involved in the determination of the discount rate, the determination of whether a contract contains a lease, classification of operating versus finance lease, assessment of useful lives, and estimation of residual values. Discounted future minimum lease payments are used in determining the lease classification represent the present value of minimum rental payments called for over the lease term, inclusive of residual value guarantees (if applicable) and amounts that would be required to be paid, if any, by the Company upon default for leases containing subjective acceleration or cross default clauses.
In connection with various operating leases, we issued residual value guarantees, which provide that if we do not purchaseRefer to Note 16, in Part II, Item 8 of this Annual Report for discussion about the leased equipment from the lessor at the endchanges in balance of the lease term, we are liable to the lessor for an amount equal to the shortage (if any) between the proceeds from the sale of the equipment and an agreed value. To the extent we believe any manufacturer will refuse or be unable to meet its obligation, we recognize additional rental expense to the extent we believe the fair market value at the lease termination will be less than our obligation to the lessor. We believe that proceeds from the sale of equipment under operating leases would exceed the payment obligation on substantially all operating leases.
Stock-based Compensation We issue several types of stock-based compensation, including awards that vest, based on service andconditions, performance conditions, or a combination of service and performance conditions. Performance-based awards vest contingent upon meeting certain performance criteria established by our compensation committee. All awards require future service and thus forfeitures are estimated based on historical forfeitures and the remaining term until the related award vests. ASC Topic 718, Compensation – Stock Compensation, requires that all stock-based payments to employees, including grants of employee stock options, be recognized in the financial statements based upon a grant-date fair value of an award. Determining the appropriate amount to expense in each period is based on likelihood and timing of achievement of the stated targets for performance-based awards, and requires judgment, including forecasting future financial results and market performance. The estimates are revised periodically, based on the probability and timing of achieving the required performance targets, and adjustments are made as appropriate. Awards that are only subjectThere is also some judgement involved with estimating expected forfeiture rates as we have opted to time-vesting provisions are amortized usingnet the straight-line method. Awards subjectbenefit of expected forfeitures against our stock-based compensation expense.
Refer to time-based vestingNote 21, in Part II, Item 8 of this Annual Report for discussion about the assumptions related to these awards and performance conditions are amortized using the individual vesting tranches.impact on our results for 2021 and 2020.
Legal Settlements and Reserves — See Note 19 in Part II Item 8 of this Annual Report.
Recently Issued Accounting Pronouncements
See Note 3 in Part II, Item 8 of this Annual Report, which is incorporated herein by reference, for the impact of recently issued accounting pronouncements that could have an impact on the Company'sour consolidated financial statements, as follows:statements.
Note 3 for accounting pronouncements adopted during 2019.
Note 4 for recently issued accounting pronouncements.


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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

ITEM 7A.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Interest Rate Risk
We have exposure from variable interest rates, primarily related to our 20172021 Debt Agreement and 20182021 RSA. These variable interest rates are impacted by changes in short-term interest rates. We primarily manage interest rate exposure through a mix of variable rate debt (weighted average rate of 2.7%1.1% as of December 31, 2019)2021) and fixed rate equipment lease financing. Assuming the level of borrowings as of December 31, 2019,2021, a hypothetical one percentage point increase in interest rates would increase our annual interest expense by $17.9 million.
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
Commodity Price Risk
We have commodity exposure with respect to fuel used in company-owned tractors. Increases in fuel prices would continue to raise our operating costs, even after applying fuel surcharge revenue. Historically, we have been able to recover a majority of fuel price increases from our customers in the form of fuel surcharges. The weekly average diesel price per gallon in the US decreasedincreased to an average of $3.06$3.29 per gallon for 20192021 from an average of $3.18$2.56 per gallon for 2018.2020. We cannot predict the extent or speed of potential changes in fuel price levels in the future, the degree to which the lag effect of our fuel surcharge programs will impact us as a result of the timing and magnitude of such changes, or the extent to which effective fuel surcharges can be maintained and collected to offset such increases. We generally have not used derivative financial instruments to hedge our fuel price exposure in the past, but continue to evaluate this possibility.


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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

ITEM 8.FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
The Consolidated Financial Statements of the Company as of December 31, 20192021 and 20182020 and for the years ended December 31, 2019, 2018,2021, 2020, and 2017,2019, together with related notes and the report of Grant Thornton LLP, independent registered public accountants, are set forth on the following pages. Other required financial information set forth herein is more fully described in Item 15 of this Annual Report.
Audited Financial Statements of Knight-Swift Transportation Holdings Inc.
Index to Consolidated Financial Statements
Index to Consolidated Financial Statements
Consolidated Financial StatementsPage
Notes to Consolidated Financial Statements
Note 1
Note 2
Note 3
Note 43
Note 54
Note 65
Note 76
Note 87
Note 98
Note 109
Note 1110
Note 1211
Note 1312
Note 1413
Note 1514
Note 1615
Note 1716
Note 1817
Note 18
Note 19
Note 20
Note 21
Note 22
Note 23
Note 24
Note 25
Note 26
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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Board of Directors and Shareholders
Knight-Swift Transportation Holdings Inc.
Opinion on the financial statements
We have audited the accompanying consolidated balance sheets of Knight-Swift Transportation Holdings Inc. (an Arizona(a Delaware corporation) and subsidiaries (the “Company”"Company") as of December 31, 20192021 and 2018,2020, the related consolidated statements of comprehensive income, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2019,2021, and the related notes (collectively referred to as the “financial statements”). In our opinion, thefinancial statements present fairly, in all material respects, the financial position of the Companyas of December 31, 20192021 and 2018,2020, and the results of itsoperations and itscash flows for each of the three years in the period ended December 31, 2019,2021, in conformity with accounting principles generally accepted in the United States of America.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”("PCAOB"), the Company’s internal control over financial reporting as of December 31, 2019,2021, based on criteria established in the 2013 Internal Control-IntegratedControl—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”("COSO"), and our report dated February 27, 202024, 2022 expressed an unqualified opinion.
Change in accounting principle
As discussed in Note 3 to the consolidated financial statements, the Company has changed its method of accounting for leases in 2019 due to the adoption of Accounting Standards Update No. 2016-02: Leases (Topic 842).
Basis for opinion
These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the USU.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence supportingregarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
Critical audit matters
The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.
Goodwill impairment assessment
As described further in Notes 2 and 11the footnotes to the consolidated financial statements, management evaluates goodwill for impairment on an annual basis as of June 30, or more frequently if impairment indicators exist, at the reporting unit level. Management estimates the fair values of its reporting units using a combination of the income and market approaches. The determination of the fair value of the reporting units requires management to make significant estimates and assumptions related to forecasts of future revenues and operating expenses and discount rates. Changes in these assumptions could materially affect the determination of the fair value of the reporting units, the amount of any goodwill impairment charge, or both.
We identified the goodwill impairment assessment of certain reporting units as a critical audit matter. The principal consideration for this determination is that management utilized significant judgment when estimating the fair value of thethese reporting units. In turn, auditing management’s judgments regarding forecasts of future revenues and
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operating expenses, and the

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discount rates applied, involved a high degree of subjectivity due to the estimation uncertainty of management’s significant judgments.
Our audit procedures related to the goodwill impairment assessment included the following, among others:
We tested the operating effectiveness of controls relating to the goodwill impairment assessment, including the determination of the fair value of the reporting units.
We tested management’s process for determining the fair value of the reporting units. This included evaluating the appropriateness of the valuation methods and testing the completeness, accuracy and relevance of data used by management, and evaluatingmanagement.
We evaluated the reasonableness of management’s significant assumptions, which included forecasted revenues and operating expenses, and net capital expenditures.expenses. We tested whether these forecasts were reasonable and consistent with historical performance, third-party market data, and other evidence obtained in other areas of the audit.
We tested the Company’s discounted cash flow models for the reporting units with the assistance of valuation specialists, including the reasonableness of the utilized discount rates.
We tested the Company’s use of the market approach with the assistance of valuation specialists, including the reasonableness of selected multiples.
Indefinite-lived intangible asset impairment assessment - trade namesname
As described further in Notes 2 and 11the footnotes to the consolidated financial statements, management evaluates the trade names for impairment on an annual basis, as of June 30, unless events occur or circumstances change between annual tests that would more likely than not reduce the fair value.frequently if impairment indictors exist. The impairment test consists of a comparison of the estimated fair valuecarrying amount with the projected discounted cash flows from the use and eventual disposition of the trade names to their carrying values.asset group. The determination of the fair value of the trade names requires management to make significant estimates and assumptions related to forecasts of future revenues, discount rates, and royalty rates. Changes in these assumptions could materially affect the determination of the fair value of the trade names, the amount of any trade names impairment charge, or both.
We identified the trade namesname impairment assessment of a certain trade name as a critical audit matter. The principal consideration for this determination is that management used significant judgment when estimating the fair value of the trade names.name. In turn, auditing management’s judgments regarding forecasts of future revenues,revenue, the discount ratesrate applied, and the royalty rates,rate, involved a high degree of subjectivity due to the estimation uncertainty of management’s significant judgments.
Our audit procedures related to the trade namesname indefinite-lived intangible asset impairment assessment included the following, among others:
We tested the operating effectiveness of controls relating to the trade namesname impairment assessment, including the determination of the fair value of the trade names.name.
We tested management’s process for determining the fair value of the trade names.name. This included evaluating the appropriateness of the valuation method, testing the completeness, accuracy and relevance of data used by management, and evaluatingmanagement.
We evaluated the reasonableness of management’s significant assumptions, which included forecasted revenues. We tested whether these forecasts were reasonable and consistent with historical performance, third-party market data, and other evidence obtained in other areas of the audit.
We tested the reasonableness of the Company’s discount ratesrate and royalty ratesrate with the assistance of valuation specialists.
Swift Auto liability and workers’ compensation claims reserve accrual
As described further in Notes 2, 13, and 19the footnotes to the consolidated financial statements, the Company is self-insured for a portion of its risk related to auto liability and workers’ compensation. The Company accrues for the cost of the self-insureduninsured portion of unpaidpending claims by evaluating the nature and severity of individual claims and by estimating future claims development based upon historical development trends. The actual cost to settle self-insured claim liabilities may differ from the Company’s reserve estimates due to legal costs, claims that have been incurred but not reported, and various other uncertainties.uncertainties, including the inherent difficulty in estimating the severity of the claims and the potential judgment or settlement amount to dispose of the claim.
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We identified the estimation of Swift’s auto liability and workers’ compensation claims accruals, subject to certain self-insured retention, as a critical audit matter. Auto liability and workers’ compensation unpaid claim liabilities are determined by projecting the estimated ultimate loss related to a claim, less actual costs paid to date. These estimates rely on the assumption that historical claim patterns are an accurate representation for future claims that have been incurred but

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not completely paid. The principal considerations for assessing auto liability and workers’ compensation claims as a critical audit matter are the high level of estimation uncertainty related to determining the severity of these types of claims, as well as the inherent subjectivity in management’s judgment in estimating the total costs to settle or dispose of these claims.
Our audit procedures related to the auto liability and workers' compensation claims accrualthis critical audit matter included the following, among others:
We tested the operating effectiveness of controls over auto liability and workers’ compensation claims, including the completeness and accuracy of claim expenses and payments.
We tested management’s process for determining the auto liability and workers’ compensation claims accrual, including evaluating the reasonableness of the methods and assumptions used in estimating the ultimate claim losses with the assistance of an actuarial specialist.
We tested the claims data used in the autoclaims liability and workers' compensation claims accrual calculation by selecting samples of historical claims data and inspecting source documents to test key attributes of the claims data.
Accounting Standards Codification (“ASC”) Topic 842, Leases, adoptionCustomer relationships acquired with the AAA Cooper Transportation acquisition
As described further in Note 3the footnotes to the Company’sconsolidated financial statements, on July 5, 2021, the Company adopted ASC Topic 842, Leases, asacquired 100% of January 1, 2019.AAA Cooper Transportation. The liability is equaltotal purchase price consideration was $1.31 billion, which allocated $406.2 million to separately identified intangible assets, including customer relationships of $250.8 million. The determination of the fair value of the customer relationships requires management to make significant estimates and assumptions related to forecasts of future revenues, expenses and the discount rate applied. Changes in these assumptions could materially affect the determination of the fair value of the customer relationships. We identified the fair value assigned to the present value of future lease payments. The asset is basedcustomer relationships included on the liability, and may be subject to certain adjustments, including initial direct costs and lessor provided incentives.
We identified adoption of ASC Topic 842opening balance sheet as a critical audit matter. The adoption of ASC Topic 842 is a substantial change in accounting for leases. The principal considerationconsiderations for our determination that the adoption of ASC Topic 842 isacquired customer relationships are a critical audit matter is that it requiresmanagement utilized significant auditor judgment in obtaining sufficient appropriate audit evidence relatedwhen estimating the fair value assigned to the customer relationships. In turn, auditing management’s determinationjudgments regarding the assigned fair value involved a high degree of subjectivity due to the lease liability, ROU asset, and selectionestimation uncertainty of discount rates to be applied to future lease payments.management’s significant judgments.
Our audit procedures related to the adoption of ASC Topic 842estimated fair value assigned to acquired customer relationships included the following, among others:others.
We tested the operating effectiveness of controls relating to the initial adoptionidentification of ASC Topic 842.the acquired customer relationships, including the determination of the fair value.
We tested management’s process for determining the fair value of the acquired customer relationships. This included evaluating the appropriateness of the valuation method and testing the completeness, accuracy, and relevance of data used by management.
We evaluated the independent auditor’s report on effectivenessreasonableness of controls at the Company’s third party lease software vendor,management’s significant assumptions, which included testing the effectiveness of the relevant user controls due to the Company’s reliance on the third party software to appropriately calculate the related ROU assetforecasted revenues and lease liability.operating expenses. We tested whether these forecasts were reasonable and consistent with historical performance and third-party market data.
We verified the completeness of the population of leases that management evaluated as part of the initial adoption.
We inspected a sample of lease contracts, compared the relevant inputs in the lease software to underlying lease documentation, and recalculated the related ROU asset and lease liability.
We assessedtested the reasonableness of the Company’s discount ratesrate applied to the present value of the estimated future cash flows model with the assistance of valuation specialists.
/s/ GRANT THORNTON LLP

We have served as the Company’s auditor since 2011.
Phoenix, Arizona
February 27, 2020


24, 2022
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.


Consolidated Balance Sheets
December 31,December 31,
2019 201820212020
ASSETS(In thousands, except per share data)ASSETS(In thousands, except per share data)
Current assets:   Current assets:
Cash and cash equivalents$159,722
 $82,486
Cash and cash equivalents$261,001 $156,699 
Cash and cash equivalents – restricted41,331
 46,888
Cash and cash equivalents – restricted87,241 39,328 
Restricted investments, held-to-maturity, amortized cost8,912
 17,413
Restricted investments, held-to-maturity, amortized cost5,866 9,001 
Trade receivables, net of allowance for doubtful accounts of $18,178 and $16,355, respectively518,547
 601,228
Trade receivables, net of allowance for doubtful accounts of $21,663 and $22,093, respectivelyTrade receivables, net of allowance for doubtful accounts of $21,663 and $22,093, respectively911,336 578,479 
Contract balance – revenue in transit12,696
 15,602
Contract balance – revenue in transit22,936 14,560 
Prepaid expenses62,160
 67,011
Prepaid expenses90,507 71,649 
Assets held for sale41,786
 39,955
Assets held for sale8,166 29,756 
Income tax receivable17,026
 6,943
Income tax receivable909 2,903 
Other current assets27,848
 29,706
Other current assets26,318 20,988 
Total current assets890,028
 907,232
Total current assets1,414,280 923,363 
Property and equipment:   Property and equipment:
Revenue equipment3,007,774
 2,617,989
Revenue equipment3,994,519 3,417,194 
Land and land improvements228,546
 227,581
Land and land improvements326,731 236,517 
Buildings and building improvements406,105
 375,435
Buildings and building improvements639,990 458,464 
Furniture and fixtures61,567
 51,619
Furniture and fixtures97,102 69,250 
Shop and service equipment26,417
 22,771
Shop and service equipment46,640 29,033 
Leasehold improvements12,330
 10,549
Leasehold improvements13,915 12,890 
Total property and equipment3,742,739
 3,305,944
Total property and equipment5,118,897 4,223,348 
Less: accumulated depreciation and amortization(892,019) (693,107)Less: accumulated depreciation and amortization(1,563,533)(1,230,696)
Property and equipment, net2,850,720
 2,612,837
Property and equipment, net3,555,364 2,992,652 
Operating lease right-of-use-assets169,425
 
Operating lease right-of-use-assets147,540 113,296 
Goodwill2,918,992
 2,919,176
Goodwill3,515,135 2,922,964 
Intangible assets, net1,379,459
 1,420,919
Intangible assets, net1,831,049 1,389,245 
Other long-term assets73,108
 51,721
Other long-term assets192,132 126,482 
Total assets$8,281,732
 $7,911,885
Total assets$10,655,500 $8,468,002 
LIABILITIES AND STOCKHOLDERS’ EQUITY   LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:   Current liabilities:
Accounts payable$99,194
 $117,883
Accounts payable$224,844 $101,001 
Accrued payroll and purchased transportation110,065
 126,464
Accrued payroll and purchased transportation217,084 160,888 
Accrued liabilities175,222
 151,500
Accrued liabilities128,536 88,894 
Claims accruals – current portion150,805
 160,044
Claims accruals – current portion206,607 174,928 
Finance lease liabilities and long-term debt – current portion377,651
 58,672
Finance lease liabilities and long-term debt – current portion262,423 52,583 
Operating lease liabilities – current portion80,101
 
Operating lease liabilities – current portion35,322 47,496 
Accounts receivable securitization – current portionAccounts receivable securitization – current portion— 213,918 
Total current liabilities993,038
 614,563
Total current liabilities1,074,816 839,708 
Revolving line of credit279,000
 195,000
Revolving line of credit260,000 210,000 
Long-term debt – less current portion
 364,590
Long-term debt – less current portion1,037,552 298,907 
Finance lease liabilities – less current portion57,383
 71,248
Finance lease liabilities – less current portion256,166 138,243 
Operating lease liabilities – less current portion96,160
 
Operating lease liabilities – less current portion107,614 69,852 
Accounts receivable securitization204,762
 239,606
Accounts receivable securitization – less current portionAccounts receivable securitization – less current portion278,483 — 
Claims accruals – less current portion196,912
 201,327
Claims accruals – less current portion210,714 174,814 
Deferred tax liabilities771,719
 739,538
Deferred tax liabilities874,877 815,941 
Other long-term liabilities14,455
 23,294
Other long-term liabilities11,828 48,497 
Total liabilities2,613,429
 2,449,166
Total liabilities4,112,050 2,595,962 
Commitments and contingencies (notes 18 and 19)


 


Commitments and contingencies (Notes 4, 6, 17, 18, and 19)Commitments and contingencies (Notes 4, 6, 17, 18, and 19)00
Stockholders’ equity:   Stockholders’ equity:
Preferred stock, par value $0.01 per share; 10,000 shares authorized; none issued
 
Preferred stock, par value $0.01 per share; 10,000 shares authorized; none issued— — 
Common stock, par value $0.01 per share; 500,000 shares authorized; 170,688 and 172,844 shares issued and outstanding as of December 31, 2019 and 2018, respectively.1,707
 1,728
Common stock, par value $0.01 per share; 500,000 shares authorized; 165,980 and 166,553 shares issued and outstanding as of December 31, 2021 and 2020, respectively.Common stock, par value $0.01 per share; 500,000 shares authorized; 165,980 and 166,553 shares issued and outstanding as of December 31, 2021 and 2020, respectively.1,660 1,665 
Accumulated other comprehensive lossAccumulated other comprehensive loss(563)— 
Additional paid-in capital4,269,043
 4,242,369
Additional paid-in capital4,350,913 4,301,424 
Retained earnings1,395,465
 1,216,852
Retained earnings2,181,142 1,566,759 
Total Knight-Swift stockholders' equity5,666,215
 5,460,949
Total Knight-Swift stockholders' equity6,533,152 5,869,848 
Noncontrolling interest2,088
 1,770
Noncontrolling interest10,298 2,192 
Total stockholders’ equity5,668,303
 5,462,719
Total stockholders’ equity6,543,450 5,872,040 
Total liabilities and stockholders’ equity$8,281,732
 $7,911,885
Total liabilities and stockholders’ equity$10,655,500 $8,468,002 
See accompanying notes to consolidated financial statements.

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.


Consolidated Statements of Comprehensive Income
2019 2018 2017 202120202019
(In thousands, except per share data)(In thousands, except per share data)
Revenue:     Revenue:
Revenue, excluding trucking fuel surcharge$4,395,332
 $4,809,668
 $2,199,483
Trucking fuel surcharge448,618
 534,398
 225,970
Revenue, excluding truckload and LTL fuel surchargeRevenue, excluding truckload and LTL fuel surcharge$5,531,890 $4,369,207 $4,395,332 
Truckload and LTL fuel surchargeTruckload and LTL fuel surcharge466,129 304,656 448,618 
Total revenue4,843,950
 5,344,066
 2,425,453
Total revenue5,998,019 4,673,863 4,843,950 
Operating expenses:     Operating expenses:
Salaries, wages, and benefits1,474,073
 1,495,126
 688,543
Salaries, wages, and benefits1,771,772 1,483,188 1,474,073 
Fuel583,123
 621,997
 274,956
Fuel546,256 416,307 583,123 
Operations and maintenance322,188
 340,627
 164,307
Operations and maintenance313,505 275,290 322,188 
Insurance and claims194,336
 215,362
 95,199
Insurance and claims275,378 192,840 194,336 
Operating taxes and licenses88,481
 90,778
 40,544
Operating taxes and licenses98,784 87,422 88,481 
Communications19,520
 20,911
 10,691
Communications22,486 19,596 19,520 
Depreciation and amortization of property and equipment420,082
 387,505
 193,733
Depreciation and amortization of property and equipment522,596 460,775 420,082 
Amortization of intangibles42,876
 42,584
 13,372
Amortization of intangibles55,299 45,895 42,876 
Rental expense122,738
 177,406
 74,224
Rental expense55,161 86,640 122,738 
Purchased transportation1,035,969
 1,318,303
 594,113
Purchased transportation1,320,888 936,649 1,035,969 
Impairments3,486
 2,798
 16,844
Impairments299 5,335 3,486 
Miscellaneous operating expenses109,640
 61,626
 41,781
Miscellaneous operating expenses49,898 99,488 109,640 
Merger-related costs
 
 16,516
Total operating expenses4,416,512
 4,775,023
 2,224,823
Total operating expenses5,032,322 4,109,425 4,416,512 
Operating income427,438
 569,043
 200,630
Operating income965,697 564,438 427,438 
Other (expenses) income:     Other (expenses) income:
Interest income3,834
 3,200
 1,207
Interest income1,173 1,928 3,834 
Interest expense(29,433) (30,170) (8,686)Interest expense(21,140)(17,309)(29,433)
Other income, net12,137
 9,965
 558
Other income, net28,905 11,254 12,137 
Total other (expenses) income, net(13,462) (17,005) (6,921)Total other (expenses) income, net8,938 (4,127)(13,462)
Income before income taxes413,976
 552,038
 193,709
Income before income taxes974,635 560,311 413,976 
Income tax expense (benefit)103,798
 131,389
 (291,716)
Income tax expenseIncome tax expense230,887 149,676 103,798 
Net income310,178
 420,649
 485,425
Net income743,748 410,635 310,178 
Net income attributable to noncontrolling interest(972) (1,385) (1,133)Net income attributable to noncontrolling interest(360)(633)(972)
Net income attributable to Knight-Swift$309,206
 $419,264
 $484,292
Net income attributable to Knight-Swift$743,388 $410,002 $309,206 
Other comprehensive lossOther comprehensive loss(563)— — 
Comprehensive incomeComprehensive income$742,825 $410,002 $309,206 
     
Earnings per share:     Earnings per share:
Basic$1.80
 $2.37
 $4.38
Basic$4.48 $2.42 $1.80 
Diluted$1.80
 $2.36
 $4.34
Diluted$4.45 $2.40 $1.80 
     
Dividends declared per share:$0.24
 $0.24
 $0.24
Dividends declared per share:$0.38 $0.32 $0.24 
     
Weighted average shares outstanding:     Weighted average shares outstanding:
Basic171,541
 177,018
 110,657
Basic165,860 169,711 171,541 
Diluted172,142
 177,999
 111,697
Diluted167,060 170,549 172,142 
See accompanying notes to consolidated financial statements.



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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.


Consolidated Statements of Stockholders' Equity

 
Common Stock
 Additional Paid-in Capital Retained Earnings Total
Knight-Swift Stockholders' Equity
 Noncontrolling Interest Total Stockholders' Equity
 Shares Par Value     
 (In thousands)
Balances, December 31, 201680,229
 $802
 $223,267
 $562,404
 $786,473
 $2,258
 $788,731
2017 Merger reverse split of Swift shares97,031
 971
 3,975,832
   3,976,803
 102
 3,976,905
Common stock issued to employees718
 7
 13,151
   13,158
   13,158
Common stock issued to the board of directors12
 
 398
   398
   398
Common stock issued under employee stock purchase plan8
 
 324
   324
   324
Shares withheld – restricted stock unit settlement      (4,709) (4,709)   (4,709)
Employee stock-based compensation expense    6,242
   6,242
   6,242
Cash dividends paid and dividends accrued      (25,249) (25,249)   (25,249)
Net income attributable to Knight-Swift      484,292
 484,292
   484,292
Distribution to noncontrolling interest          (855) (855)
Net income attributable to noncontrolling interest          1,133
 1,133
Balances, December 31, 2017177,998
 $1,780
 $4,219,214
 $1,016,738
 $5,237,732
 $2,638
 $5,240,370
Common stock issued to employees670
 6
 10,944
   10,950
   10,950
Common stock issued to the board of directors19
 
 774
   774
   774
Common stock issued under employee stock purchase plan49
 1
 1,822
 
 1,823
 
 1,823
Company shares repurchased(5,892) (59)   (179,259) (179,318)   (179,318)
Shares withheld – restricted stock unit settlement      (2,550) (2,550)   (2,550)
Employee stock-based compensation expense    11,488
   11,488
   11,488
Cash dividends paid and dividends accrued      (42,642) (42,642)   (42,642)
Net income attributable to Knight-Swift      419,264
 419,264
   419,264
Distribution to noncontrolling interest          (2,253) (2,253)
Net income attributable to noncontrolling interest          1,385
 1,385
Net acquisition of remaining ownership interest, previously noncontrolling    (1,873)   (1,873)   (1,873)
Net cumulative-effect adjustment from adopting ASC Topic 606      5,301
 5,301
   5,301
Balances, December 31, 2018172,844
 $1,728
 $4,242,369
 $1,216,852
 $5,460,949
 $1,770
 $5,462,719
Common stock issued to employees621
 7
 10,471
   10,478
   10,478
Common stock issued to the board of directors19
 
 531
   531
   531
Common stock issued under employee stock purchase plan78
 1
 2,297
   2,298
   2,298
Company shares repurchased(2,874) (29)   (86,863) (86,892)   (86,892)
Shares withheld – restricted stock unit settlement      (2,330) (2,330)   (2,330)
Employee stock-based compensation expense    13,375
   13,375
   13,375
Cash dividends paid and dividends accrued      (41,400) (41,400)   (41,400)
Net income attributable to Knight-Swift      309,206
 309,206
   309,206
Distribution to noncontrolling interest          (654) (654)
Net income attributable to noncontrolling interest          972
 972
Balances, December 31, 2019170,688
 $1,707
 $4,269,043
 $1,395,465
 $5,666,215
 $2,088
 $5,668,303

 
Common Stock
Additional Paid-in CapitalRetained EarningsAccumulated
Other
Comprehensive Loss
Total
Knight-Swift Stockholders' Equity
Noncontrolling InterestTotal Stockholders' Equity
 SharesPar Value
(In thousands)
Balances – December 31, 2018172,844 $1,728 $4,242,369 $1,216,852 $— $5,460,949 $1,770 $5,462,719 
Common stock issued to employees621 10,471 10,478 10,478 
Common stock issued to the Board19 — 531 531 531 
Common stock issued under ESPP78 2,297 2,298 2,298 
Company shares repurchased(2,874)(29)(86,863)(86,892)(86,892)
Shares withheld – RSU settlement(2,330)(2,330)(2,330)
Employee stock-based compensation expense13,375 13,375 13,375 
Cash dividends paid and dividends accrued ($0.24 per share)(41,400)(41,400)(41,400)
Net income attributable to Knight-Swift309,206 309,206 309,206 
Distribution to noncontrolling interest(654)(654)
Net income attributable to noncontrolling interest972 972 
Balances – December 31, 2019170,688 $1,707 $4,269,043 $1,395,465 $— $5,666,215 $2,088 $5,668,303 
Common stock issued to employees631 10,007 10,013 10,013 
Common stock issued to the Board13 — 515 515 515 
Common stock issued under ESPP62 — 2,220 2,220 2,220 
Company shares repurchased(4,841)(48)(179,537)(179,585)(179,585)
Shares withheld – RSU settlement(4,510)(4,510)(4,510)
Employee stock-based compensation expense19,639 19,639 19,639 
Cash dividends paid and dividends accrued ($0.32 per share)(54,661)(54,661)(54,661)
Net income attributable to Knight-Swift410,002 410,002 410,002 
Distribution to noncontrolling interest(529)(529)
Net income attributable to noncontrolling interest633 633 
Balances – December 31, 2020166,553 $1,665 $4,301,424 $1,566,759 $— $5,869,848 $2,192 $5,872,040 
Common stock issued to employees510 5,918 5,924 5,924 
Common stock issued to the Board12 — 575 575 575 
Common stock issued with ACT Acquisition219 9,998 10,000 10,000 
Common stock issued under ESPP63 2,782 2,783 2,783 
Company shares repurchased(1,377)(14)(57,161)(57,175)(57,175)
Shares withheld – RSU settlement(8,257)(8,257)(8,257)
Employee stock-based compensation expense33,495 33,495 33,495 
Cash dividends paid and dividends accrued ($0.38 per share)(63,587)(63,587)(63,587)
Net income attributable to Knight-Swift743,388 743,388 743,388 
Other comprehensive income(563)(563)(563)
Noncontrolling interest associated with acquisition10,281 10,281 
Distribution to noncontrolling interest(64)(64)
Net income attributable to noncontrolling interest360 360 
Net acquisition of remaining ownership interest, previously noncontrolling(3,279)(3,279)(2,471)(5,750)
Balances – December 31, 2021165,980 $1,660 $4,350,913 $2,181,142 $(563)$6,533,152 $10,298 $6,543,450 
See accompanying notes to consolidated financial statements.

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.


Consolidated Statements of Cash Flows
 202120202019
(In thousands)
Cash flows from operating activities:
Net income$743,748 $410,635 $310,178 
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment, and intangibles577,895 506,670 462,958 
Gain on sale of property and equipment(74,799)(9,706)(32,935)
Impairments299 5,335 3,486 
Deferred income taxes39,929 46,214 30,731 
Non-cash lease expense45,192 80,891 120,769 
Other adjustments to reconcile net income to net cash provided by operating activities28,279 43,682 24,156 
Increase (decrease) in cash resulting from changes in:
Trade receivables(214,573)(75,521)70,106 
Income tax receivable2,528 14,123 (10,069)
Accounts payable73,371 7,500 (13,180)
Accrued liabilities and claims accrual40,872 (31,210)(919)
Operating lease liabilities(48,171)(83,675)(121,737)
Other assets and liabilities(24,417)4,707 (3,950)
Net cash provided by operating activities1,190,153 919,645 839,594 
Cash flows from investing activities:
Proceeds from maturities of held-to-maturity investments10,624 13,675 22,695 
Purchases of held-to-maturity investments(7,706)(16,936)(14,302)
Proceeds from sale of property and equipment, including assets held for sale252,080 133,230 260,140 
Purchases of property and equipment(534,096)(521,067)(829,977)
Expenditures on assets held for sale(1,367)(483)(16,093)
Net cash, restricted cash, and equivalents invested in acquisitions(1,496,208)(46,811)(1,885)
Investment in convertible notes(35,000)— — 
Other cash flows from investing activities(5,060)(42,320)(4,284)
Net cash used in investing activities(1,816,733)(480,712)(583,706)
Cash flows from financing activities:
Repayment of finance leases and long-term debt(409,889)(148,910)(115,642)
Proceeds from long-term debt1,200,000 — — 
Borrowings (repayments) on revolving lines of credit, net50,000 (69,000)84,000 
Borrowings under accounts receivable securitization80,000 61,000 150,000 
Repayment of accounts receivable securitization(15,000)(52,000)(185,000)
Proceeds from common stock issued9,282 12,748 13,307 
Repurchases of the Company's common stock(57,175)(179,585)(86,892)
Dividends paid(63,535)(54,620)(41,425)
Other cash flows from financing activities(14,357)(13,517)(2,984)
Net cash provided by (used in) financing activities779,326 (443,884)(184,636)
Net increase (decrease) in cash, restricted cash, and equivalents152,746 (4,951)71,252 
Cash, restricted cash, and equivalents at beginning of period197,277 202,228 130,976 
Cash, restricted cash, and equivalents at end of period$350,023 $197,277 $202,228 
 2019 2018 2017
 (In thousands)
Cash flows from operating activities:     
Net income$310,178
 $420,649
 $485,425
Adjustments to reconcile net income to net cash provided by operating activities:     
Depreciation and amortization of property, equipment, and intangibles462,958
 430,089
 207,105
Gain on sale of property and equipment(32,935) (36,236) (8,939)
Impairments3,486
 2,798
 16,844
Deferred income taxes30,731
 62,469
 (305,584)
Non-cash lease expense120,769
 
 
Other adjustments to reconcile net income to net cash provided by operating activities24,156
 4,617
 14,758
Increase (decrease) in cash resulting from changes in:     
Trade receivables70,106
 (9,375) (48,454)
Income tax receivable(10,069) 48,171
 (39,122)
Accounts payable(13,180) (18,033) (29,890)
Accrued liabilities and claims accrual(919) (14,367) 35,820
Operating lease liabilities(121,737) 
 
Other assets and liabilities(3,950) (8,805) (5,373)
Net cash provided by operating activities839,594
 881,977
 322,590
Cash flows from investing activities:     
Proceeds from maturities of held-to-maturity investments22,695
 26,970
 10,730
Purchases of held-to-maturity investments(14,302) (22,156) (10,893)
Proceeds from sale of property and equipment, including assets held for sale260,140
 225,821
 82,731
Purchases of property and equipment(829,977) (755,997) (387,191)
Expenditures on assets held for sale(16,093) (30,322) (1,553)
Net cash, restricted cash, and equivalents (invested in) acquired from 2017 Merger and other acquisitions(1,885) (101,693) 91,960
Other cash flows from investing activities(4,284) 10,085
 9,953
Net cash used in investing activities(583,706) (647,292) (204,263)
Cash flows from financing activities:     
Repayment of finance leases and long-term debt(115,642) (46,630) (503,153)
Proceeds from long-term debt
 
 400,000
Borrowings on revolving lines of credit, net84,000
 70,000
 107,000
Borrowings under accounts receivable securitization150,000
 70,000
 40,000
Repayment of accounts receivable securitization(185,000) (135,000) 
Proceeds from common stock issued13,307
 13,547
 13,483
Repurchases of the Company's common stock(86,892) (179,318) 
Dividends paid(41,425) (42,770) (25,454)
Other cash flows from financing activities(2,984) (5,271) (7,876)
Net cash (used in) provided by financing activities(184,636) (255,442) 24,000
Net increase (decrease) in cash, restricted cash, and equivalents71,252
 (20,757) 142,327
Cash, restricted cash, and equivalents at beginning of period130,976
 151,733
 9,406
Cash, restricted cash, and equivalents at end of period$202,228
 $130,976
 $151,733



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Consolidated Statements of Cash Flows — Continued
 202120202019
(In thousands)
Supplemental disclosures of cash flow information:
Cash paid during the period for:
Interest$18,949 $17,396 $28,916 
Income taxes167,092 80,006 78,658 
Non-cash investing and financing activities:
Equipment acquired included in accounts payable$10,489 $651 $6,748 
Equipment sales receivables67 223 1,333 
Financing provided to independent contractors for equipment sold4,773 5,428 5,288 
Transfer from property and equipment to assets held for sale92,445 75,292 137,391 
Noncontrolling interest associated with acquisition10,281 — — 
Contingent consideration associated with acquisition6,250 16,200 — 
Value of common stock issued for acquisition10,000 — — 
Conversion of note receivable to equity investment37,631 — — 
Right-of-use assets obtained in exchange for operating lease liabilities22,771 12,406 9,803 
Right-of-use assets obtained in exchange for new operating lease liabilities through acquisitions50,988 12,356 — 
Property and equipment obtained in exchange for new finance lease liabilities181,234 137,097 — 
Property and equipment obtained in exchange for finance lease liabilities reclassified from operating lease liabilities42,298 67,430 56,352 
 2019 2018 2017
 (In thousands)
Supplemental disclosures of cash flow information:     
Cash paid during the period for:     
Interest$28,916
 $28,723
 $9,286
Income taxes78,658
 16,106
 51,817
Non-cash investing and financing activities:     
Equipment acquired included in accounts payable$6,748
 $11,931
 $8,361
Equipment sales receivables1,333
 5,565
 350
Financing provided to independent contractors for equipment sold5,288
 1,742
 3,316
Transfer from property and equipment to assets held for sale137,391
 133,434
 45,016
Right-of-use assets obtained in exchange for new operating lease liabilities9,803
 
 
Property and equipment obtained in exchange for new finance lease liabilities56,352
 
 
Property and equipment obtained in exchange for new capital lease obligations (under ASC Topic 840)
 
 15,020
Reconciliation of Cash, Restricted Cash, and Equivalents:2019 2018 2017Reconciliation of Cash, Restricted Cash, and Equivalents:202120202019
(In thousands)(In thousands)
Consolidated Balance Sheets     Consolidated Balance Sheets
Cash and cash equivalents$159,722
 $82,486
 $76,649
Cash and cash equivalents$261,001 $156,699 $159,722 
Cash and cash equivalents – restricted ¹41,331
 46,888
 73,657
Other long-term assets ¹1,175
 1,602
 1,427
Cash and cash equivalents – restricted 1
Cash and cash equivalents – restricted 1
87,241 39,328 41,331 
Other long-term assets 1
Other long-term assets 1
1,781 1,250 1,175 
Consolidated Statements of Cash Flows     Consolidated Statements of Cash Flows
Cash, restricted cash, and equivalents$202,228
 $130,976
 $151,733
Cash, restricted cash, and equivalents$350,023 $197,277 $202,228 
     
________
1Reflects cash and cash equivalents that are primarily restricted for claims payments
1    Reflects cash and cash equivalents that are primarily restricted for claims payments
See accompanying notes to consolidated financial statements.


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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

Notes to Consolidated Financial Statements
Note 1 — Introduction and Basis of Presentation
Certain acronyms and terms used throughout this Annual Report are specific to Knight-Swift, commonly used in the trucking industry, or are otherwise frequently used throughout this document. Definitions for these acronyms and terms are provided in the "Glossary of Terms," available in the front of this document.
Description of Business
Knight-Swift is a transportation solutions provider, headquartered in Phoenix, Arizona. During 2019,2021, the TruckingTruckload segment operated an average of 18,877 18,019 tractors (comprised of 16,43216,166 company tractors and 2,4451,853 independent contractor tractors). The Company operated 67,606 trailers during the year, including trailers within the Truckload segment and 58,315leasing activities within the non-reportable segments. The LTL segment operated an average 2,735 tractors and 7,413 trailers. Additionally, the Intermodal segment operated an average of 643597 tractors and 9,862 intermodal10,847 intermodal containers.
Segment Realignment
During the first quarter of 2019, the Company reorganized its reportable segments to reflect management’s revised reporting structure. Under this revised reporting structure, the The Company's 34 reportable segments are as follows:
The Trucking segment now includes the results of the previously-reported Knight Trucking, Swift Truckload, Swift Dedicated,Logistics, LTL, and Swift Refrigerated segments.
The Logistics segment now includes the results of the Knight brokerage and Swift logistics businesses which were previously included within the Knight Logistics and Swift non-reportable segments, respectively.
The Intermodal segment now includes the results of the previously-reported Swift Intermodal segment and the results of the Knight intermodal business, which was previously included in the Knight Logistics segment.
The non-reportable segments include support services that Swift's subsidiaries provide to customers and independent contractors (including repair and maintenance shop services, equipment leasing, and insurance), certain driving academy activities, as well as certain legal settlements and accruals, amortization of intangibles related to the 2017 Merger and select acquisitions, and other corporate expenses. Additionally, the non-reportable segments now include Knight's equipment leasing and warranty services to independent contractors and trailer parts manufacturing, which were previously reported within the Knight Logistics segment.Intermodal.
2017 Merger
On September 8, 2017, the Company became Knight-Swift Transportation Holdings Inc. upon the effectiveness of the 2017 Merger. Immediately upon the consummation of the 2017 Merger, former Knight stockholders and former Swift stockholders owned approximately 46.0% and 54.0%, respectively, of the Company. Upon closing of the 2017 Merger, the shares of Knight common stock that previously traded under the ticker symbol "KNX" ceased trading and were delisted from the NYSE. The shares of Class A common stock commenced trading on the NYSE on a post-reverse split basis under the ticker symbol "KNX" on September 11, 2017.
Recent Acquisitions
The Company accounted forrecently acquired the 2017 Merger usingfollowing entities:
100.0% of MME on December 6, 2021. The results are included within the acquisition methodLTL segment.
100.0% of accounting inACT on July 5, 2021. The results are included within the LTL segment.
100.0% of UTXL on June 1, 2021. The results are included within the Logistics segment.
79.44% of Eleos on February 1, 2021. The results are included within the non-reportable segments. The noncontrolling interest is presented as a separate component of the consolidated financial statements.
100.0% of Warehousing Co. on January 1, 2020. The results are included within the non-reportable segments.
Note regarding comparability: In accordance with GAAP. GAAP requires that either Knight or Swift is designatedthe accounting treatment applicable to the transactions, the Company's consolidated results, as reported, do not include the acquirer for accounting and financial reporting purposes ("Accounting Acquirer"). Based on the evidence available, Knight was designated as the Accounting Acquirer while Swift was the acquirer for legal purposes. Therefore, Knight’s historicaloperating results of operations replaced Swift’s historical results of operations for all periodsits ownership interest in the acquired entities prior to the 2017 Merger. More specifically,respective acquisition dates. Accordingly, comparisons between the accompanying consolidated financial statements for periodsCompany's current and prior toperiod results may not be meaningful.
Additional information regarding the 2017 Merger are those of Knight and its subsidiaries, and for periods subsequent to the 2017 Merger, also include Swift.
In identifying Knight as the Accounting Acquirer, management took into account the structure of the 2017 Merger, the composition of the combined company's board of directors and the designation of certain senior management positions of the combined company, among other factors.
See NoteCompany's recent acquisitions is included in 5 for further details of the 2017 Merger, including discussion of the purchase price allocation applied, as well as Note 421for further discussion related to the treatment of the Swift equity awards assumed pursuant to the 2017 Merger..

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Abilene Acquisition
On March 16, 2018, the Company acquired all of the issued and outstanding equity interests of Abilene. Abilene's trucking and logistics businesses are included under the respective segments. Please refer to Note 5 for more information about the Abilene Acquisition.
Other Acquisition
On January 1, 2020 the Company acquired a small company to complement its suite of services. Please refer to Note 5 in Part II, Item 8 of this Annual Report for more information about this acquisition.
Basis of Presentation
The consolidated financial statements include the accounts of Knight-Swift Transportation Holdings Inc. and its subsidiaries. In management's opinion, these consolidated financial statements were prepared in accordance with GAAP and include all adjustments necessary (consisting of normal recurring adjustments) for the fair presentation of the periods presented.
With respect to transactional/durational data, references to "years", including "2019""2021", "2018", "2017", "2016""2020", and "2015""2019" pertain to calendar years. Similarly, references to "quarters", including "first", "second", "third", and "fourth" pertain to calendar quarters.
Note regarding comparability — Based on the structure of the 2017 Merger, the reported results do not include the results of operations of Swift and its subsidiaries on and prior to the 2017 Merger, in accordance with the accounting treatment applicable to the transaction. Additionally, the reported results do not include the results of operations of Abilene and its subsidiaries on and prior to its acquisition by the Company on March 16, 2018 in accordance with the accounting treatment applicable to the transaction. Accordingly, comparisons between the Company's 2019 results and prior periods may not be meaningful.
Joint ventures — The financial activities of the following entities with which the Company has joint ventures are consolidated. The noncontrolling interest for these entities is presented as a separate component of the consolidated financial statements.Seasonality
In 2014, Knight formed an Arizona limited liability company, now known as Kold Trans, LLC, for the purpose of expanding its refrigerated trucking business. Knight was entitled to 80.0% of the profits of the entity and has effective control over the management of the entity. During 2018, the Company purchased the remaining 20.0% of the joint venture, eliminating the related noncontrolling interest.
In 2010, Knight partnered with a non-related investor to form an Arizona limited liability company for the purpose of sourcing commercial vehicle parts. Knight acquired a 52.0% ownership interest in this entity.
Equity method and other equity investments — Refer to Note 7 for basis of presentation disclosures regarding Knight's equity method and other equity investments in Transportation Resource Partners.
Changes in Presentation
Changes in presentation associated with adopting accounting pronouncements are included in Note 3.
Balance Sheet — Beginning in the second quarter of 2019, the Company presents "Contract balance – revenue in transit" as a separate line item on the consolidated balance sheets to improve visibility. The balance was previously disclosed within the footnotes to the consolidated financial statements. Prior period amounts have been reclassified out of "Trade receivables, net" to align with the current period presentation.
Statement of Cash Flows — The amounts presented in the Company's 2017 Annual Report were reclassified to align with the presentation in this Annual Report as follows:
"Transportation Resource Partners impairment," "Income from investment in Transportation Resource Partners," "Non-cash compensation expense for issuance of common stock to certain members of the Board of Directors," "Provision for doubtful accounts and notes receivable," "Stock-based compensation expense," and "Amortization of debt issuance costs, and other" were reclassified to "Other adjustments to reconcile net income to net cash provided by operating activities."
Changes in "Other current assets," "Prepaid expenses," and "Other long-term assets" were reclassified to "Other assets and liabilities."

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"Proceeds from notes receivable," "Payments received on equipment sale receivables," "Cash payments to Transportation Resource Partners," and "Cash proceeds from Transportation Resource Partners" were reclassified to "Other cash flows from investing activities."
"Payment of deferred loan costs," "Share withholding for taxes due on equity awards," and "Cash distribution to noncontrolling interest holder," were reclassified to "Other cash flows from financing activities."
"Repayments on Knight Revolver, net" and "Borrowings on Revolver, net" were reclassified to "Borrowings on revolving lines of credit, net."
Statement of Comprehensive Income — Beginning in the second quarter of 2019, the Company presents fuel surcharge revenue generated within only its Trucking segment within "Trucking fuel surcharge" in the consolidated statements of comprehensive income. Fuel surcharge revenue generated within the remaining segments is included in "Revenue, excluding trucking fuel surcharge." Prior period amounts have been reclassified to align with the current period presentation.
During 2017, to simplify the presentation of the consolidated statements of comprehensive income, the Company changed its presentation of rental expenses related to revenue equipment, which is now separately presented within "Total operating expenses" in the consolidated statements of comprehensive income. The prior period presentation has been retrospectively adjusted to reclassify the amount out of "Miscellaneous operating expenses" and into the new line item "Rental expense." The change in presentation has no net impact on "Total operating expenses."
Seasonality
In thefull truckload transportation industry, results of operations generally follow a seasonal pattern. Freight volumes in the first quarter are typically lower due to less consumer demand, customers reducing shipments following the holiday season, and inclement weather. At the same time, operating expenses generally increase, and tractor productivity of the Company's Truckload fleet, independent contractors, and third-party carriers decreases during the winter months due to decreased fuel efficiency, increased cold-weather-related equipment maintenance
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and repairs, and increased insurance claims and costs attributed to higher accident frequency from harsh weather. These factors typically lead to lower operating profitability, as compared to other parts of the year. Additionally, beginning in the latter half of the third quarter and continuing into the fourth quarter, the Company typically experiences surges pertaining to holiday shopping trends toward delivery of gifts purchased over the Internet as well as the length of the holiday season (consumer shopping days between Thanksgiving and Christmas). However, as the Company continues to diversify its business through expansion into the LTL industry, warehousing, and other activities, seasonal volatility is becoming more tempered. Additionally, macroeconomic trends and cyclical changes in the trucking industry, including imbalances in supply and demand, can override the seasonality faced in the industry.
Impact of COVID-19
The Company continues to operate its business through the COVID-19 pandemic, including its variants, and has taken additional precautions to ensure the safety of its employees, customers, vendors, and the communities in which it operates.
Various uncertainties have arisen from the COVID-19 pandemic. While management is continuing to monitor the impact of the pandemic on Knight-Swift, including its employees, customers, vendors, independent contractors, stockholders, and other business partners and stakeholders, it is difficult to predict the impact that the pandemic will have on future results of its operations, financial position, and liquidity. This has caused some uncertainties around various accounting estimates. Due to these uncertainties, the Company's accounting estimates may change, as management's assessment of the impacts of the COVID-19 pandemic continues to evolve.
ASUs
There were various ASUs that became effective during 2021, which did not have a material impact on the Company's results of operations, financial position, cash flows, or disclosures.
Note 2 — Summary of Significant Accounting Policies
Use of Estimates — The preparation of the consolidated financial statements, in accordance with GAAP, requires management to make estimates and assumptions about future events that affect the amounts reported in the Company's consolidated financial statements and accompanying notes. On an ongoing basis, management evaluates and periodically adjusts its estimates and assumptions, based on historical experience, the impact of the current economic environment, and other key factors. Volatile energy markets, as well as changes in consumer spending have increased the inherent uncertainty in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Significant items subject to such estimates and assumptions include:
carrying amount of property and equipment, intangibles,equipment;
carrying amount of goodwill and goodwill;intangible assets;
leases;
estimates of claims accruals;
contingent obligations;
calculation of stock-based compensation;
valuation allowancesallowance for receivables, inventories, and deferred income tax assets;
valuation allowances for receivables; and
valuation of financial instruments;
calculation of stock-based compensation;
estimates of claims accruals;
leases; and
contingent obligations.instruments.
Segments — The Company uses the "management approach" to determine its reportable segments, as well as to determine the basis of reporting the operating segment information. Certain of the Company's operating segments

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have been aggregated into reportable segments. The management approach focuses on financial information that management uses to make operating decisions. The Company's chief operating decision makers use total revenue, operating expense categories, operating ratios, operating income, and key operating statistics to evaluate performance and allocate resources to the Company's operations.operations and is based around the transportation service offerings provided to the Company's customers, as well as the equipment utilized.
Operating income is the measure that management uses to evaluate segment performance and allocate resources. Operating income should not be viewed as a substitute for GAAP net income (loss).income. Management believes the
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presentation of operating income enhances the understanding of the Company's performance by highlighting the results of operations and the underlying profitability drivers of the business segments. Operating income is defined as "Total revenue" less "Total operating expenses."
Based on the unique nature of the Company's operating structure, certain revenue-generating assets are interchangeable between segments. Additionally, the Company's chief operating decision makers do not review assets or liabilities by segment to make operating decisions. The Company allocates depreciation and amortization expense of its property and equipment to the segments based on the actual utilization of the asset by the segment during the period.
See Note 25 for additional disclosures regarding the Company's segments.
Cash and Cash Equivalents — Cash and cash equivalents are comprised of cash, money market funds, and highly liquid instruments with insignificant interest rate risk and original maturities of three months or less. Cash balances with institutions may be in excess of Federal Deposit Insurance Corporation ("FDIC") limits or may be invested in sweep accounts that are not insured by the institution, the FDIC, or any other government agency.
Restricted Cash and Equivalents — The Company's wholly-owned captive insurance companies, Red Rock and Mohave, maintain certain operating bank accounts, working trust accounts, and investment accounts. The cash and cash equivalents within these accounts are restricted by insurance regulations to fund the insurance claim losses to be paid by the captive insurance companies, and therefore, are classified as "Cash and cash equivalents restricted" and within "Other long-term assets" in the consolidated balance sheets.
Restricted Investments — The Company's investments are restricted by insurance regulations to fund the insurance claim losses to be paid by the captive insurance companies. The Company accounts for its investments in accordance with ASC Topic 320, Investments – Debt Securities. Management determines the appropriate classification of its investments in debt securities at the time of purchase and re-evaluates the determination on a quarterly basis. As of December 31, 2019,2021, all of the Company's investments in fixed-maturity securities were classified as held-to-maturity, as the Company has the positive intent and ability to hold these securities to maturity. Held-to-maturity securities are carried at amortized cost. The amortized cost of debt securities is adjusted using the effective interest rate method for amortization of premiums and accretion of discounts. Amortization and accretion are reported in "Other income, net" in the consolidated statements of comprehensive income.
Management periodically evaluates restricted investments for impairment. The assessment of whether impairments have occurred is based on management's case-by-case evaluation of the underlying reasons for the decline in estimated fair value. Management accounts for other-than-temporary impairments of debt securities in accordance with ASC Topic 320, Investments – Debt Securities.320. This guidance requires the Company to evaluate whether it intends to sell an impaired debt security or whether it is more likely than not that it will be required to sell an impaired debt security before recovery of the amortized cost basis. If either of these criteria are met, an impairment loss equal to the difference between the debt security's amortized cost and its estimated fair value is recognized in earnings. For impaired debt securities that do not meet these criteria, the Company determines if a credit loss exists with respect to the impaired security. If a credit loss exists, the credit loss component of the impairment (i.e., the difference between the security's amortized cost and the present value of projected future cash flows expected to be collected) is recognized in earnings and the remaining portion of the impairment is recognized as a component of accumulated other comprehensive income.
See Note 65 for additional disclosures regarding the Company's restricted investments.

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Inventories and Supplies — Inventories and supplies, which are included in "Other current assets" in the consolidated balance sheets, primarily consist of spare parts, tires, fuel, and supplies and are stated at lower of cost or net realizable value. Depending on the class of inventory, cost is determined using the first-in, first-out method or average cost. Replacement tires held in the shops are classified as inventory and expensed when placed in service. Replacement tire costs incurred over the road are immediately expensed.
Property and Equipment — Property and equipment is stated at cost less accumulated depreciation. Costs to construct significant assets include capitalized interest incurred during the construction and development period. Expenditures for replacements and improvements are capitalized. Maintenance and repairs are expensed as incurred.
Depreciation
77

Category: Range (in years)
Revenue equipment 420
Shop and service equipment 210
Land improvements 515
Buildings and building improvements 1040
Furniture and fixtures 310
Leasehold improvements Life of the lease

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Net gains on the disposal of property and equipment are presented in the consolidated statements of comprehensive income within "Miscellaneous operating expenses."
Tires on purchased revenue equipment are capitalized along with the related equipment cost when the vehicle is placed in service, and are depreciated over the life of the vehicle. Replacement tires
Depreciation of property and equipment is calculated on a straight-line basis down to the salvage value, as applicable, over the following estimated useful lives:
Category:Range (in years)
Revenue equipment *320
Shop and service equipment210
Land improvements515
Buildings and building improvements1040
Furniture and fixtures310
Leasehold improvementsLife of the lease
*For finance leases involving revenue equipment, the depreciation period is equal to the term of the lease agreement.
Management believes that these methods properly spread the costs over the useful lives of the assets. Management judgment is involved when determining estimated useful lives of the Company's long-lived assets. Useful lives of the Company's long-lived assets are classifieddetermined based on historical experience, as inventorywell as future expectations regarding the period the Company expects to benefit from the asset. Factors affecting estimated useful lives of property and expensed when placed in service.equipment may include estimating loss, damage, obsolescence, and Company policies around maintenance and asset replacement.
Management evaluates its property and equipment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable in accordance with ASC Topic 360, Property, Plant and Equipment. When such events or changes in circumstances occur, management performs a recoverability test that compares the carrying amount with the projected undiscounted cash flows from the use and eventual disposition of the asset or asset group. An impairment is recorded for any excess of the carrying amount over the estimated fair value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values, and third-party independent appraisals, as consideredwhen necessary. Estimating fair value includes several significant assumptions, including future cash flow estimates, determination of appropriate discount rates, and other assumptions that management believes reasonable under the circumstances. Changes in these estimates and assumptions could materially affect the determination of fair value and/or impairment.
Goodwill — Management evaluates goodwill on an annual basis as of June 30th, or more frequently if indicators of impairment exist. The Company performs a quantitative analysis on an annual basis, in accordance with ASC 350, Goodwill and Other Intangible Assets. Management estimates the fair values of its reporting units using a combination of the income and market approaches. If the carrying amount of a reporting unit exceeds the fair value, then management recognizes an impairment loss of the same amount. This loss is only limited to the total amount of goodwill allocated to that reporting unit. Refer to Note 10 for the results of the Company's annual evaluation as of June 30, 2021.
On a periodic basis, the Company assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than the carrying amount. If the Company concludes that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then the Company conducts a two-step quantitative goodwill impairment test. The first step of the quantitative impairment test involves comparing the fair values of the applicable reporting units with their carrying values. Management estimates the fair values of its reporting units using a combination of the income and market approaches. If the carrying amount of a reporting unit exceeds the reporting unit's fair value, then management performs the second step of the quantitative impairment test. The second step of the quantitative impairment test involves comparing the implied fair value of the affected reporting unit's goodwill with the carrying value of that goodwill. Any amount by which the carrying value of the goodwill exceeds its implied fair value is recognized as an impairment loss. Refer to Note 11 for discussion of the results of the Company's annual evaluation as of June 30, 2019.
See Notes 54 and 1110 for additional disclosures regarding the Company's goodwill.
Intangible Assets other than Goodwill — The Company's intangible assets other than goodwill primarily consist of acquired customer relationships, trade names, and a trade name from the 2017 Merger, as well asother intangibles from Knight's 2018 acquisition of Abilene and Knight's 2014 acquisition of Barr-Nunn Transportation, Inc. and certain of its affiliates.acquisitions. Amortization of acquired customer relationships, and other intangibles is calculated on a straight-line basis over the estimated useful life, which ranges from 53 years to 20 years. Theyears. Certain trade names have indefinite useful lives and are not amortized, but are tested for impairment at least annually, unless events occur or circumstances change between annual tests that would more likely than not reduce the fair value.

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Management reviews its intangible assets for impairment whenever events or circumstances indicate that the carrying amount of the asset may not be recoverable, in accordance with ASC Topic 350, Intangibles – Goodwill and Other. When such events or changes in circumstances occur, management performs a recoverability test that compares the carrying amount with the projected discounted cash flows from the use and eventual disposition of the asset or asset group. An impairment is recorded for any excess of the carrying amount over the estimated fair value, which is generally determined using discounted future cash flows.
Fair value is determined through various valuation techniques, including discounted cash flow models, quoted market values, and third-party independent appraisals. Estimating fair value includes several significant assumptions, including future cash flow estimates, determination of appropriate discount rates, royalty rates, and other assumptions that management believes reasonable under the circumstances. Changes in these estimates and assumptions could materially affect the determination of fair value and/or impairment.
See Notes 54 and 1110 for additional disclosures regarding the Company's intangible assets.
Claims Accruals — The Company is self-insured for a portion of its risk related to auto liability, workers' compensation, property damage, cargo damage, and cargo damage. This self-insurancegroup health. Self-insurance results from buying insurance coverage that applies in excess of a retained portion of risk for each respective line of coverage. The Company accrues for the cost of the uninsured portion of pending claims by evaluating the nature and severity of individual claims and by estimating future claims development based upon historical claims development trends. The actual cost to settle self-insured claim liabilities may differ from the Company's reserve estimates due to legal costs, claims that have been incurred but not reported, and various other uncertainties, including the inherent difficulty in estimating the severity of the claims and the potential judgment or settlement amount to dispose of the claim.
See Notes 1312 and 19 for additional disclosures regarding the Company's claims accruals.
Operating Leases (2019)Management evaluates the Company’s leases based on the underlying asset groups. The assets currently underlying the Company’s leases include revenue equipment (primarily tractors and trailers), real estate (primarily buildings, office space, land, and drop yards), as well as technology and other equipment that supports business operations. Management’s significant assumptions and judgments include the determination of the discount rate (discussed below), as well as the determination of whether a contract contains a lease.
In accordance with ASC 842, Leases, property and equipment held under operating leases are recorded as right-of-use assets, with a corresponding operating lease liability. Additionally, property and equipment held under finance leases are recorded as property and equipment with corresponding finance lease liabilities. All expenses related to operating leases are reflected in our consolidated statements of comprehensive income in "Rental expense." Expenses related to finance leases are reflected in our consolidated statements of comprehensive income in "Depreciation and amortization of property and equipment" and "Interest expense."
Lease Term — The Company’s leases generally have lease terms corresponding to the useful lives of the underlying assets. Revenue equipment leases have fixed payment terms based on the passage of time, which is typically three to five years for tractors and five to seven years for trailers. Certain finance leases for revenue equipment contain renewal or fixed price purchase options. Real estate leases, excluding drop yards, generally have varying lease terms between five and fifteen years and may include renewal options. Drop yards include month-to-month leases, as well as leases with varying lease terms generally ranging from two to five years.
Options to renew or purchase the underlying assets are considered in the determination of the right-of-use asset and corresponding lease liability once reasonably certain of exercise.
Portfolio Approach — The Company typically leases its revenue equipment under master lease agreements, which contain general terms, conditions, definitions, representations, warranties, and other general language, while the specific contract provisions are contained within the various individual lease schedules that fall under a master lease agreement. Each individual leased asset within a lease schedule is similar in nature (i.e. all tractors or all trailers) and has identical contract provisions to all of the other individual leased assets within the same lease schedule (such as the contract provisions discussed above). Management has elected to apply the portfolio approach to its revenue equipment leases, as accounting for its revenue equipment under the portfolio approach would not be materially different from separately accounting for each individual underlying asset as a lease. Each individual real estate and other lease is accounted for at the individual asset level.
Nonlease Components — Management has elected to combine its nonlease components (such as fixed charges for common area maintenance, real estate taxes, utilities, and insurance) with lease components for each class of underlying asset, as applicable, as the nonlease components in the Company’s lease contracts typically are not material. These nonlease components are usually present within the Company’s real estate leases. The Company’s assets are generally insured by umbrella policies, in which the premiums change from one policy period to the next, making them variable in nature. Accordingly, these insurance costs are excluded from the Company’s calculation of right-of-use assets and corresponding lease liabilities.

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Nonlease Components — Management has elected to combine its nonlease components (such as fixed charges for common area maintenance, real estate taxes, utilities, and insurance) with lease components for each class of underlying asset, as applicable, as the nonlease components in the Company’s lease contracts typically are not material. These nonlease components are usually present within the Company’s real estate leases. The Company’s assets are generally insured by umbrella policies, in which the premiums change from one policy period to the next, making them variable in nature. Accordingly, these insurance costs are excluded from the Company’s calculation of right-of-use assets and corresponding lease liabilities.
Short-Term Lease Exemption — Management has elected to apply the short-term lease exemption to all asset groups. Accordingly, leases with terms of twelve months or less are not capitalized and continue to be expensed on a straight-line basis over the term of the lease. This primarily affects the Company’s drop yards and corresponding temporary structures on those drop yards. To a lesser extent, certain short-term leases for revenue equipment, technology, and other assets are affected.
Discount Rate — The Company uses the rate implicit in the lease, when readily determinable, which is generally related to the Company's finance leases. Otherwise the Company’s incremental borrowing rate is applied. The implicit interest rate is not readily determinable for the Company’s operating leases. As such, management applies the Company’s incremental borrowing rate, which is defined by GAAP as the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. The Company's incremental borrowing rate is based on the results of an independent third-party valuation.
— Management has elected to apply the short-term lease exemption to all asset groups. Accordingly, leases with terms of twelve months or less are not capitalized and continue to be expensed on a straight-line basis over the term of the lease. This primarily affects the Company’s drop yards and corresponding temporary structures on those drop yards. To a lesser extent, certain short-term leases for revenue equipment, technology, and other assets are affected.
Discount Rate — The Company uses the rate implicit in the lease, when readily determinable. Otherwise the Company’s incremental borrowing rate is applied. Due to the unique structure of the Company’s revenue equipment leases, management believes that the rate implicit in the lease is readily determinable for such leases and the implicit rate is used. The Company’s use of the implicit rate (rather than the incremental borrowing rate) for its revenue equipment leases does not materially change the Company’s financial position or financial results either by financial statement caption or in total. The implicit interest rate is not readily determinable for the Company’s real estate and other leases. As such, management applies the Company’s incremental borrowing rate, which is defined by GAAP as the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. The Company's incremental borrowing rate is based on the results of an independent third-party valuation.
Residual Values — The Company's finance leases for revenue equipment are typically structured with balloon payments at the end of the lease term equal to the residual value the Company is contracted to receive from certain equipment manufacturers upon sale or trade back to the manufacturers. If the Company does not receive proceeds of the contracted residual value from the manufacturer, the Company is still obligated to make the balloon payment at the end of the lease term.
In connection with certain revenue equipment operating leases, the Company issues residual value guarantees, which provide that if the Company does not purchase the leased equipment from the lessor at the end of the lease term, then the Company is liable to the lessor for an amount equal to the shortage (if any) between the proceeds from the sale of the equipment and an agreed value. To the extent management believes any manufacturer will refuse or be unable to meet its obligation, the Company recognizes additional rental expense to the extent the fair market value at the lease termination is expected to be less than the obligation to the lessor. Proceeds from the sale of equipment under the Company’s operating leases generally exceed the payment obligation on substantially all operating leases. Although the Company typically owes certain amounts to its lessors at the end of its revenue equipment leases, the Company’s equipment manufacturers have corresponding guarantees back to the Company as to the buyback value of the units.
Operating Leases (2018 and 2017) —In accordance with ASC Topic 840, Leases, property and equipment held under operating leases, and liabilities related thereto, are off-balance sheet. All expenses related to operating leases were reflected in the consolidated statement of comprehensive income in "Rental expense." At lease inception, management determined whether the lease should be classified as operating or capital lease, based on the guidance set forth in ASC Topic 840. Additionally at lease inception, management determined the useful life and estimated residual values of the related equipment. Future minimum lease payments used in determining lease classification represented the minimum rental payments called for over the lease term, inclusive of residual value guarantees (if applicable) and amounts that would be required to be paid, if any, by the Company upon default for leases containing subjective acceleration or cross default clauses.
In connection with various operating leases, the Company issued residual value guarantees, which provided that if the Company did not purchase the leased equipment from the lessor at the end of the lease term, it was liable to the lessor for an amount equal to the shortage (if any) between the proceeds from the sale of the equipment and an agreed value. To the extent the Company believed any manufacturer would refuse or be unable to meet its obligation, the Company recognized additional rental expense to the extent the Company believed the fair market value at the lease termination would be less than the Company's obligation to the lessor. The Company believed that proceeds from the sale of equipment under operating leases would exceed the payment obligation on substantially all operating leases.
See Note 1716 for additional disclosures regarding the Company's operating leases.
Fair Value Measurements — See Note 23 for accounting policies and financial information relating to fair value measurements.

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Contingencies — See Note 19 for accounting policies and financial information related to contingencies.
Revenue Recognition (2019 and 2018) Management applies the five-step analysis to the Company's 4 reportable segments (Truckload, Logistics, LTL, and Intermodal).
Step 1: Contract Identification Management has identified that a legally enforceable contract with its customers is executed by both parties at the point of pickup at the shipper's location, as evidenced by the bill of lading. Although the Company may have master agreements with its customers, these master agreements only establish general terms. There is no financial obligation to the shipper until the load is tendered/accepted and the Company takes possession of the load.
Step 2: Performance Obligations The Company's only performance obligation is transportation services. The Company's delivery, accessorial, and dedicated operations truck capacity in its dedicated operations represent a bundle of services that are highly interdependent and have the same pattern of transfer to the customer.
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These services are not capable of being distinct from one another. For example, the Company generally would not provide accessorial services or truck capacity without providing delivery services.
Step 3: Transaction Price Depending on the contract, the total transaction price may consist of mileage revenue, fuel surcharge revenue, accessorial fees, truck capacity, and/or non-cash consideration. Non-cash consideration is measured by the estimated fair value of the non-cash consideration at contract inception. There is no significant financing component in the transaction price, as the Company's customers generally pay within the contractual payment terms of 30 to 60 days.
Step 4: Allocating Transaction Price to Performance Obligations The transaction price is entirely allocated to the only performance obligation: transportation services.
Step 5: Revenue Recognition The performance obligation of providing transportation services is satisfied over time. Accordingly, revenue is recognized over time. Management estimates the amount of revenue in transit at period end based on the number of days completed of the dispatch (which is generally one to three days for the Truckload, Logistics and LTL segments, but can be longer for intermodal operations). Management believes this to be a faithful depiction of the transfer of services because if a load is dispatched, but terminates mid-route and the load is picked up by another carrier, then that carrier would not need to re-perform the services for the days already traveled.
The Company adopted ASC Topic 606, Revenue from Contracts with Customers, on January 1, 2018.
Contract Identificationoutsources the transportation of loads to third-party carriers through its logistics operations. Management has identified that a legally enforceable contract with its customers is executed by both parties at the point of pickup at the shipper's location, as evidenced by the bill of lading. Although the Company may have master agreements with its customers, these master agreements only establish general terms. There is no financial obligation to the shipper until the load is tendered/accepted and the Company takes possession of the load.
Performance Obligations The Company's only performance obligation is transportation services. The Company's delivery, accessorial, and dedicated operations truck capacity in its dedicated operations represent a bundle of services that are highly interdependent and have the same pattern of transfer to the customer. These services are not capable of being distinct from one another. For example, the Company generally would not provide accessorial services or truck capacity without providing delivery services.
Transaction Price Depending on the contract, the total transaction price may consist of mileage revenue, fuel surcharge revenue, accessorial fees, truck capacity, and/or non-cash consideration. Non-cash consideration is measured by the estimated fair value of the non-cash consideration at contract inception. There is no significant financing component in the transaction price, as the Company's customers generally pay within the contractual payment terms of 30 to 60 days.
Allocating Transaction Price to Performance Obligations The transaction price is entirely allocated to the only performance obligation: transportation services.
Revenue Recognition The performance obligation of providing transportation services is satisfied over time. Accordingly, revenue is recognized over time. Management estimates the amount of revenue in transit at period end based on the number of days completed of the dispatch (which is generally one to three days for the Trucking segment, but can be longer for the Intermodal segment). Management believes this to be a faithful depiction of the transfer of services because if a load is dispatched, but terminates mid-route and the load is picked up by another carrier, then that carrier would not need to re-perform the services for the days already traveled. Recognizing revenue over time is a change from the Company's past practice, under which revenue was recognized at the point in time that the freight was delivered (see "Revenue Recognition (2017)" below).
Based on the guidance in ASC Topic 606, management has determined that the Company acts as theis a principal (rather than the agent)in these arrangements, and therefore records revenue associated with respect to revenue recognition within its Logistics segment. Accordingly, the Company recognizes revenuethese contracts on a gross basis, consistent with past practices.basis. The Company has the primary responsibility to meet the customers' requirements. The Company invoices and collects from its customers and maintains discretion over pricing. Additionally, the Company is responsible for the selection of third-party transportation providers to the extent used to satisfy customer freight requirements.
Significant judgments involved in the Company's revenue recognition and corresponding accounts receivable balances include:
Measuring in-transit revenue at period end (discussed above).
Estimating the allowance for doubtful accounts. The Company establishes an allowance for doubtful accounts based on historical experience and any known trends or uncertainties related to customer billing and account collectability. Management reviews the adequacy of its allowance for doubtful accounts on a quarterly basis. Uncollectible accounts are written off when deemed uncollectible, and accounts receivable are presented net of an allowance for doubtful accounts.
Contract BalancesIn-transit revenue balances are included in "Contract balance – revenue in transit" in the consolidated balance sheets. The Company's contract liability balances are typically immaterial.
Revenue Disaggregation In considering the level at which the Company should disaggregate revenues pertaining to contracts with customers, management determined that there are no significant differences between segments in how the nature, amount, timing, and uncertainty of revenue or cash flows are affected by economic factors. Additionally, management considered how and where the Company has communicated information about revenue for various purposes, including disclosures outside of the financial statements and how information is regularly reviewed by the Company's chief operating decision makers for evaluating financial performance of the Company's segments, among others. Based on these considerations, management determined that revenues should be disaggregated by reportable segment.

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The Company recognizes operating lease revenue from leasing tractors and related equipment to third parties, including independent contractors. Operating lease revenue from rental operations is recognized as earned, which is straight-lined per the rent schedules in the lease agreements. Losses from lease defaults are recognized as offsets to revenue.
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Credit terms for customer accounts were generally on a net 30 day basis. The Company established an allowance for doubtful accounts based on historical experience and any known trends or uncertainties related to customer billing and account collectability. The Company reviewed the adequacy of its allowance for doubtful accounts on a quarterly basis. Uncollectible accounts were written off when deemed uncollectible, and accounts receivable were presented net of an allowance for doubtful accounts.
KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
Stock-based Compensation — The Company accounts for stock-based compensation expense in accordance with ASC Topic 718, Compensation – Stock Compensation. ASC Topic 718 requires that all share-based payments to employees and non-employee directors, including grants of employee stock options, arebe recognized in the financial statements based upon a grant-date fair value of an award. The fair value of performance units is estimated using the Monte Carlo Simulation valuation model. Equity awards settled in cash are remeasured at each reporting period and are recognized as a liability in the consolidated balance sheets during the vesting period until settlement.
Fair Value — The fair value of performance units is estimated using the Monte Carlo Simulation valuation model. The fair value of stock options is estimated using the Black-Scholes option-valuation model. The fair value of restricted stock units is the closing stock price on the grant date.
VestingThe requisite service period is the specified vesting date in the grant agreement or the date that the employee becomes retirement-eligible, whichever occurs first.based on the terms of the grant agreement. The Company calculates the number of awards expected to vest as awards granted, less expected forfeitures over the life of the award (estimated at grant date). The fair value of restricted stock units isAll awards require future service and thus forfeitures are estimated based on historical forfeitures and the closing price ofremaining term until the related award vests. Performance-based awards vest contingent upon meeting certain performance criteria established by the Company's stock as ofcompensation committee.
ExpenseAwards that are only subject to time-vesting provisions are amortized using the grant date. Compensation expense is recorded on a straight-line basis,method, by amortizing the grant-date fair value over the requisite service period of the entire award. Awards subject to time-based vesting and performance conditions are amortized using the individual vesting tranches. Unless a material deviation from the assumed forfeiture rate is observed during the term in which the awards are expensed, any adjustment necessary to reflect differences in actual experience is recognized in the period the award becomes payable or exercisable.
Determining the appropriate amount to expense in each period is based on the likelihood and timing of achievement of the stated targets for performance-based awards, and requires judgment, including forecasting future financial results and market performance. The estimates are revised periodically, based on the probability and timing of achieving the required performance targets, and adjustments are made as appropriate.
See Note 21 for additional information relating to the Company's stockstock-based compensation plan.
Income Taxes — Management accounts for income taxes under the asset and liability method. Accordingly, deferred tax assets and liabilities are recognized for the future tax consequences of events that have been included in the consolidated financial statements. Additionally, deferred tax assets and liabilities are determined based on the differences between the financial statement carrying amounts and respective tax bases of assets and liabilities (using enacted tax rates in effect for the year in which the differences are expected to reverse). The effect on deferred tax assets and liabilities of changes in tax rates is recognized in income in the period that includes the enactment date. Net deferred incomes taxes are primarily classified as noncurrent in the consolidated balance sheets.
A valuation allowance is provided against deferred tax assets if the Company determines it is more likely than not that such assets will not ultimately be realized. In making such determinations, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies, and recent financial operations. To the extent management believes the likelihood of recovery is not sufficient, a valuation allowance is established for the amount determined not to be realizable. Management judgment is necessary in determining the frequency at which the need for a valuation allowance is assessed, the accounting period in which to establish the valuation allowance, as well as the amount of the valuation allowance.
Unrecognized tax benefits are defined as the difference between a tax position taken or expected to be taken in a tax return and the benefit recognized and measured pursuant to ASC Topic 740, Income Taxes. The Company does not recognize a tax benefit for uncertain tax positions unless it concludes that it is more likely than not that the benefit will be sustained on audit (including resolutions of any related appeals or litigation processes) by the taxing authority, based solely on the technical merits of the associated tax position. If the recognition threshold is met, the Company recognizes a tax benefit measured at the largest amount of the tax benefit that, in the management's judgment, is greater than 50% likely to be realized. The Company records expected incurred interest and penalties related to unrecognized tax positions in "Income tax expense (benefit)"expense" in the consolidated statements of comprehensive
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income. To the extent interest and penalties are not assessed with respect to uncertain tax positions, amounts accrued arewill be reduced and reflected as a reduction of the overall income tax provision.

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other factors including the appropriateness of tax strategies. The Company utilizes certain income tax planning strategies to reduce its overall income taxes. It is possible that certain strategies might be disallowed, resulting in an increased liability for income taxes. Significant management judgments are involved in assessing the likelihood of sustaining the strategies and determining the likely range of defense and settlement costs, in the event that tax strategies are challenged by taxing authorities. An ultimate result worse than the Company's expectations could adversely affect its results of operations.
See Note 1413 for additional disclosures regarding the Company's income taxes.

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Note 3 — Recently Adopted Accounting Pronouncements
Leases (ASC Topic 842): ASU 2016-02 — Leases
Note: Required annual disclosures regarding ASC Topic 842 are included in Note 17.
Summary of the Standard In February 2016, the FASB issued ASU 2016-02, which established the new ASC Topic 842, Leases, standard. The new standard requires lessees to recognize assets and liabilities arising from both operating and financing leases on the balance sheet. Lessor accounting for leases is largely unaffected. For public business entities, the new standard was effective for fiscal years beginning after December 15, 2018. Companies may apply the amendments in ASU 2016-02 using a modified retrospective approach with an adjustment to retained earnings as of either the beginning of the current year ("ASC Topic 840 Comparative Approach") or the beginning of the earliest period presented ("ASC Topic 842 Comparative Approach").
Adoption Method and ApproachThe Company adopted ASC Topic 842 on January 1, 2019 by applying the ASC Topic 840 Comparative Approach, resulting in the recognition of right-of-use assets and lease liabilities related to its operating leases. Comparative information related to periods prior to January 1, 2019 continues to be reported under the legacy guidance in ASC Topic 840.
Practical ExpedientsAs permitted under ASU 2016-02 (and related ASUs), management elected to apply the package of practical expedients:
Lease Identification — An entity need not reassess whether any expired or existing contracts are or contain leases.
Lease Classification — An entity need not reassess the lease classification for any expired or existing leases (for example, all existing leases that were classified as operating leases in accordance with ASC Topic 840 are now classified as operating leases, and all existing leases that were classified as capital leases in accordance with ASC Topic 840 are now classified as finance leases).
Initial Direct Costs — An entity need not reassess initial direct costs for any existing leases.
Adoption Date Impact — The required disclosures regarding the adoption date impact of ASC Topic 842 on the consolidated balance sheet are presented below.
 December 31,
2018
 Opening Balance Adjustments January 1,
2019
 (in thousands)
Assets     
Prepaid expenses 2
$67,011
 $(948) $66,063
Operating lease right-of-use assets 1

 280,527
 280,527
Other long-term assets 2
51,721
 (1) 51,720
      
Liabilities     
Accounts payable 2
$117,883
 $(437) $117,446
Accrued liabilities 2
151,500
 (4,168) 147,332
Operating lease liabilities – current portion 1

 119,963
 119,963
Operating lease liabilities – less current portion 1

 168,232
 168,232
Deferred tax liabilities 3
739,538
 
 739,538
Other long-term liabilities 2
23,294
 (4,012) 19,282
1These new line items on the consolidated balance sheets represent the capitalization of the Company's operating leases as lessee.
2The effect of adopting ASC Topic 842 reflects certain reclassifications to adjust the right-of-use assets.
3Amounts are reflective of deferred tax impacts from capitalizing the Company's operating leases.

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Current Period Impact of Adoption — The required quantitative disclosures regarding the current period impact of adopting ASC Topic 842 on the consolidated balance sheet are presented below.
 December 31, 2019
 As Reported under ASC Topic 842 If Reported Under ASC Topic 840 Effect of Change to ASC Topic 842
 (in thousands)
Assets     
Prepaid expenses 2
$62,160
 $62,879
 $(719)
Gross property and equipment 4
3,742,739
 3,741,911
 828
Accumulated depreciation and amortization 4
(892,019) (891,191) (828)
Operating lease right-of-use assets 1
169,425
 
 169,425
Other long-term assets 2
73,108
 73,108
 
      
Liabilities     
Accounts payable 2
$99,194
 $101,264
 $(2,070)
Accrued liabilities 2
175,222
 178,404
 (3,182)
Finance lease liabilities and long-term debt – current portion 4
377,651
 377,651
 
Operating lease liabilities – current portion 1
80,101
 
 80,101
Operating lease liabilities – less current portion 1
96,160
 
 96,160
Deferred tax liabilities 3
771,719
 771,772
 (53)
Other long-term liabilities 2
14,455
 16,705
 (2,250)
1Refer to tabular footnote 1 under "Adoption Date Impact" above.
2Refer to tabular footnote 2 under "Adoption Date Impact" above.
3Refer to tabular footnote 3 under "Adoption Date Impact" above.
4Amounts represent reclassification of operating lease liabilities to finance lease liabilities, as the Company became reasonably certain to purchase certain revenue equipment off of operating leases during 2019.
ASU 2018-13: Fair Value Measurement (Topic 820): Disclosure Framework – Change to the Disclosure Requirements for Fair Value Measurement
Summary of the Standard The amendments in this ASU modify several disclosure requirements under ASC Topic 820. These changes include removing the disclosure requirements related to the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, and adding disclosure requirements about the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. Additionally, the amendments remove the phrase "at a minimum" from the codification clarifying that materiality should be considered when evaluating disclosure requirements.
Current Period Impact of Adoption — The Company began excluding immaterial disclosures regarding fair value measurements from its Quarterly Reports and Annual Reports during the first quarter of 2019.
Other ASUs
There were various other ASUs that became effective during 2019, which did not have a material impact on the Company's results of operations, financial position, cash flows, or disclosures.

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Note 43 — Recently Issued Accounting Pronouncements
Date IssuedReferenceDescriptionExpected Adoption Date and MethodFinancial Statement Impact
February 2020October 2021
2020-02: Financial Instruments – Credit Losses (Topic 326)ASU No. 2021-08: Business Combinations (ASC 805), Leases – (Topic 842) – Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 119for Contract Assets and Update SEC Section on Effective Date Related to Accounting Standards Update No. 2016-02, Leases (Topic 842) 1Contract Liabilities from Contracts with Customers
The amendments in this ASU incorporate discussion from SEC Staff Accounting Bulletin No. 119 about expected implementation practices related torequire that the acquirer recognize and measure contract assets and contract liabilities in a business combination in accordance with ASC Topic 326.606 as if the acquirer had originated the contracts. The amendments also codify SEC Staff announcement that it would not objectin this ASU are applied prospectively to business combinations occurring on or after the FASB's update to effective dates for major updates which were amended within ASU 2019-10.date of the amendments.January 2021, Adoption method varies by amendment2023, ProspectiveRefer to ASU 2016-13, below.
January 2020
2020-01: Investments – Equity Securities (Topic 321), Investments – Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) – Clarifying the Interactions between Topic 321, Topic 323, and Topic 815
The amendments clarify that an entity should consider observable transactions when determining to apply or discontinue the equity method for the purposes of applying the measurement alternative. The amendments also clarify that an entity would not consider whether a purchased option would be accounted for under the equity method when applying ASC 815-10-15-141(a).January 2021, ProspectiveCurrently under evaluation, but not expected to be material
December 2019August 2021
2019-12: Income Taxes (Topic 740)ASU No. 2021-06:Presentation of Financial Statements (ASC 205), Financial ServicesDepository and Lending Simplifying the Accounting for Income Taxes(ASC 942), and Financial Services – Investment Companies (ASC 946) 1
The amendmentsASU amends various SEC paragraphs pursuant to the issuance of an SEC release to update disclosure requirements for financial statements from acquired and disposed businesses including changes in this update intend to reduce the complexity in accounting standards related to ASC Topic 740. These changes include removing several exceptions such as requirements related to intraperiod tax allocations, requirements related to foreign subsidiary equity method investments,tests and changes to interim period income tax calculations.thresholds. Additionally, the amendments intendASU amends various SEC paragraphs pursuant to simplify income tax accounting by updating areas, including but not limitedan SEC release to franchise taxes, evaluation of goodwill, allocation of currentupdate statistical disclosure requirements for bank and deferred tax expenses,savings and various other areas.loan registrants.JanuaryAugust 2021, Adoption method varies by amendmentCurrently under evaluation, but not expected to beNo material impact
November 2019August 2020
2019-11: Codification Improvements to Topic 326 Financial Instruments — Credit Losses 1
The amendments address certain issues related to the implementation of ASU 2016-13 - Financial InstrumentsNo. 2020-06: DebtCredit Losses (Topic 326) – Measurement of Credit Losses on Financial Instruments. These include, among other things, including expected recoveries in the allowance for credit losses, extending disclosure relief for accrued interest balances to additional relevant disclosures,Debt with Conversion and clarifying that an entity should assess whether it expects the borrower will be able to continually replenish collateral securing the financial assets.
January 2020, Adoption method varies by amendmentRefer to ASU 2016-13, below.
November 20192019-10: Financial Instruments — Credit Losses (Topic 326),Other Options (ASC 470-20) and Derivatives and Hedging (Topic 815),– Contracts in Entity’s Own Equity (ASC 815-40) – Accounting for Convertible Instruments and Leases (Topic 842)contracts in an Entity's Own EquityThe amendments in this ASU add disclosure requirements to convertible debt instruments and convertible preferred stock, require convertible instruments to be disclosed at fair value, and update the private entity effective datescalculation requirements for the major updates 2016-13, 2017-12, and 2016-02. The effective dates for these updates would remain the same for public business entities, but would be extended for smaller reporting companies, private companies, not-for-profit organizations and employee benefit plans.January 2020, ProspectiveCurrently under evaluation, but not expected to be material


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Date IssuedReferenceDescriptionExpected Adoption Date and MethodFinancial Statement Impact
July 2019
2019-07: Codification Updates to SEC Sections – Amendments to SEC Paragraphs Pursuant to SEC Final Rule Releases No. 33-10532, Disclosure Update and Simplification, and Nos. 33-10231 and 33-10442, Investment Company Reporting Modernization, and Miscellaneous Updates 1
diluted EPS. The amendments in this ASU update several topics of the ASC to incorporate changes required by guidance made effective by SEC Final Rule Nos. 33-10532, 33-10231,can be applied on a modified or fully retrospective basis and 33-10442. These final rules included, among other things, extending the disclosure requirement of presenting changes in stockholders' equity for both current and comparative interim periods, changing the title of the income statement to statement of comprehensive income, and disclosing the dividend per share amount for each class of stock.July 2019, ProspectivePresentation and disclosure impact only
May 2019
2019-05: Financial Instruments – Credit Losses, Topic 326; Targeted Transition
Relief
1
The amendments provide entities that hold instruments within the scope of Subtopic 326-20 with the option to irrevocably elect the fair value option in Subtopic 825-10. This fair value option election does not apply to instruments classified as held-to-maturity debt securities.January 2020, Adoption method varies by amendmentRefer to ASU 2016-13, below.
April 2019
2019-04: Codification Improvements to Topic 326, Financial Instruments – Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments 1
The amendments address certain issues related to the implementation of ASU 2016-01 – Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, ASU 2016-13 – Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and ASU 2017-12 – Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The amendments update the treatment of credit losses for accrued interest receivables and related recoveries by removing the prohibition of using projections of future interest rate environments when using a discounted cash flow method to measure expected credit losses, outlining other targeted improvements that clarify language and intent, better defining scope, and improving cross references, among others. The amendments in the ASU are effective for fiscalpublic entities for years beginning after December 15, 2019 and early adoption is permitted.2021.January 2020, Adoption method varies by amendmentRefer to ASU 2016-13, below.
November 2018
2018-19: Codification Improvements to Topic 326 – Financial Instruments – Credit Losses 1
The amendments in this ASU make targeted improvements to the implementation guidance in ASU 2016-13. The amendments clarify that receivables arising from operating leases are not within the scope of ASC 326-20, but instead should be accounted for in accordance with ASC Topic 842. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019. Early adoption is permitted.January 2020,2022, Modified retrospective or fully retrospectiveRefer to ASU 2016-13, below.
No material impact


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Date IssuedReferenceDescriptionExpected Adoption Date and MethodFinancial Statement Impact
August 2018
2018-15: Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract 2
The amendments align the requirements for capitalizing implementation costs in a hosting arrangement with the guidance for internal-use software, resulting in expensing preliminary or post-implementation project costs and capitalizing certain application development costs. Previously, there was no specific guidance for these transactions which resulted in various accounting treatments. The capitalized costs should be included in the balance sheet line that includes prepayment for the fees of the associated hosting arrangement, and amortized over the noncancellable period of the arrangement. Amortization expense should be included in the income statement line that includes the fees associated with the hosting element of the arrangement. Payments for capitalized implementation costs should be classified in the statement of cash flows in the same manner as payments made for hosting element fees. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019. Early adoption is permitted.January 2020, ProspectiveRefer to ASU 2018-05, below
January 2017
2017-04: Intangibles – Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment 3
The amendments in this ASU are intended to simplify subsequent measurement of goodwill. The key amendment in the ASU eliminates Step 2 from the goodwill impairment test, in which entities measured a goodwill impairment loss by comparing the implied fair value to the carrying amount of a reporting unit's goodwill. Instead, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value with the carrying amount of a reporting unit and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value.January 2020, ProspectiveRefer to ASU 2017-04, below.
June 2016
2016-13: Financial Instruments – Credit Losses (Topic 326) – Measurement of Credit Losses on Financial Instruments 1
The purpose of this ASU is to amend the current incurred loss impairment methodology with a new methodology that reflects expected credit losses and requires a broader range of reasonable and supportable information to inform credit loss estimates. This is the final credit accounting standard, out of a series, with detailed guidance on the new loss reserve model, Current Expected Credit Losses ("CECL"). Among other provisions, the amendments in the ASU require a financial asset (or group of assets) measured at amortized cost basis to be presented at the net amount expected to be collected. Entities are no longer required to wait until a loss is probable to record it.January 2020, Modified retrospectiveRefer to ASU 2016-13, below.

1
ASU 2016-13: Financial Instruments – Credit Losses (Topic 326) – Measurement of Credit Losses on Financial Instruments —Management has established an implementation team to evaluate and implement the ASUs related to ASC Topic 326, commonly referred to as the CECL amendments. The diagnostic phase of assessing the financial and business impacts of implementing the standard is nearly complete and includes identifying potential short-term and long-term financing receivables, determining credit quality indicators, analyzing the impact on systems (if any), and developing a preliminary assessment. Based upon the procedures performed in the diagnostic phase, management anticipates that the following key considerations will impact the Company's accounting and reporting under the new standard:
identification and assessment of receivable pools,
identification of characteristics that drive credit risk to identify financing receivable pools, and
determining new/changed estimates and management judgments (if any).
The Company is not anticipating significant changes in accounting, reporting, business processes, or policies and controls as a result of implementing the standard. Based on the information currently available from the diagnostic phase, management anticipates some minor changes in disclosures, but overall the impact on the financial statements is not expected to be material.

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2
ASU 2018-15: Intangibles – Goodwill and Other – Internal Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract — Management has established an implementation team and is currently assessing the potential financial and business impacts of implementing the standard. Based on a preliminary assessment, the Company expects to capitalize costs within the development stage of a cloud computing arrangement and continue to expense any costs in the preliminary or post implementation stages. The Company is not expecting a material impact from adopting the amendments in this ASU and has established an implementation team to assess the impact, if any.
3
ASU 2017-04: Intangibles – Goodwill and Other – (Topic 350): Simplifying the Test for Goodwill Impairment — In accordance with the amendments in this ASU, the Company expects to update its goodwill impairment test procedures by comparing the fair value of each reporting unit with its carrying amount. This differs from the current process of calculating the implied fair value of the reporting unit as if all of the assets and liabilities had been acquired in a business combination. The Company is not expecting a material impact from adopting the amendments in this ASU.
Since management is continuing to evaluate the impacts of the above standards, disclosures around these preliminary assessments are subject to change.

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Note 54 Merger and Acquisitions
2017 MergerMME
On September 8, 2017, pursuant toDecember 6, 2021, the Agreement and Plan of Merger, dated as of April 9, 2017, by Swift Transportation Company, Bishop Merger Sub, Inc.,through a direct wholly owned subsidiary, acquired 100.0% of Swift ("Merger Sub"),Bismarck, North Dakota-based MME. MME provides LTL, full truckload, and Knight Transportation, Inc., Merger Sub merged withspecialized and into Knight, with Knight surviving asother logistics transportation services to a direct wholly owned subsidiarydiverse customer base in its service territory in the upper Midwestern and great Northwestern regions of Swift (the "2017 Merger"). Immediately priorthe US.
The total purchase price consideration of $164.4 million, consisted of $104.0 million in cash consideration to the effective timesellers, including cash on hand and net working capital adjustments, and approximately $60.4 million in debt payoffs. This was funded through cash-on-hand and borrowing on the 2021 Revolver on the transaction date. At closing, $2.8 million of the 2017 Merger (the "Effective Time"), the certificate of incorporationcash consideration was placed in escrow to secure certain of the Company was amendedsellers' indemnification obligations and restated (the "Amended Company Charter")remains subject to reflect, among other things, that:
(1)the Company's corporate name changed from "Swift Transportation Company" to "Knight-Swift Transportation Holdings Inc."; and
(2)each issued and outstanding share of Class B common stock, par value $0.01 per share, of Swift was converted (the "Class B Conversion") into one share of Class A common stock, par value $0.01 per share, of Swift and immediately thereafter, each issued and outstanding share of Swift Class A common stock (including each share of Swift Class A common stock into which the shares Swift Class B common stock was converted pursuant to the Class B Conversion) was, by means of a reverse stock split (the "Reverse Split"), consolidated into 0.72 of a share of Class A common stock of the Company. No fractional shares of Class A common stock were issued in the Reverse Split, and, in connection with the Reverse Split, holders of Class A common stock became entitled to receive cash in lieu of any fractional shares in accordance with the Amended Company Charter.
At the Effective Time, each share of Knight common stock, par value $0.01 per share, of Knight ("Knight Common Stock") issued and outstanding immediately prior to the Effective Time (other than shares held in the treasury of Knight or owned or held, directly or indirectly, by Swift or any wholly owned subsidiary of Swift or Knight, in each case not held in a fiduciary capacity on behalf of a third-party) was converted into the right to receive one share of the Company's Class A common stock.
Upon the closing of the 2017 Merger, the shares of Knight common stock that previously traded under the ticker symbol "KNX" on the NYSE ceased trading on, and were delisted from, the NYSE. Shares of the Company's Class A common stock commenced trading on the NYSE, on a post-Reverse Split basis, under the ticker symbol "KNX" on September 11, 2017.
In 2017, the Company recorded $16.5 million of direct and incremental costs associated with 2017 Merger-related activities, primarily incurred for legal and professional fees, which were recorded in the "Merger-related costs" line in the consolidated statements of comprehensive income. In association with the 2017 Merger, the Company incurred merger-related bonuses and accelerated stock compensation expense totaling $5.6 million, which is recorded in the "Salaries, wages, and benefits" line in the consolidated statements of comprehensive income. Additionally, the Company incurred $0.9 million in merger-related statutory filing fees and miscellaneous expense, and $0.1 million in independent contractor retention expenses recorded within the "Miscellaneous operating expenses, net" and "Purchased transportation" lines in the consolidated statements of comprehensive income.
Purchase Price Allocation
Following the consummation of the 2017 Merger, Knight and Swift stockholders owned approximately 46% and 54%, respectively, of the Company. Based on Knight's $40.85 per share closing price on September 8, 2017 and the fair value of Swift equity awards, consisting of outstanding stock options and certain unvested restricted stock units, and noncontrolling interest assumed by the Company totaling $13.2 million, the 0.72 of a combined company share that the Swift stockholders received in respect of each Class A share of Swift had an aggregate fair value of approximately $4.0 billion.further adjustments.
The purchase price allocation for the 2017 Merger has been allocated based on estimated fair values of the equity interests of MME results in the historical tax basis of MME's assets acquiredcontinuing to be recovered and liabilities assumed at the acquisition date. Theany intangible assets arising through purchase price allocation was openaccounting will result in additional stock basis for adjustments through the endtax purposes. Deferred taxes were established as of the measurement period, which closed one year from the merger date.

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opening balance sheet for purchase accounting fair value adjustments (other than for goodwill). The SPA contains customary representations, warranties, covenants, and indemnification provisions.
The following table summarizesgoodwill recognized represents expected synergies from combining the total fair value consideration transferred:
 (In thousands, except ratio and stock price)
 
Number of Swift shares outstanding at September 8, 2017134,765
Swift share consolidation ratio0.72
Swift shares outstanding post-Reverse Split and immediately prior to the 2017 Merger97,031
Closing price of Knight on September 8, 2017$40.85
Fair value of equity portion of the 2017 Merger consideration$3,963,712
Fair value of Swift equity awards and noncontrolling interest assumed13,193
Total fair value of consideration transferred$3,976,905
  


The following is a summaryoperations of MME with the allocation of purchase consideration toCompany, including enhanced service offerings, as well as other intangible assets that did not meet the estimated fair value of Swift's assets acquired and liabilities assumed in the 2017 Merger:
 September 9, 2017 Opening Balance Sheet Adjustments ¹ Adjusted
September 9, 2017 Opening Balance Sheet
 (In thousands)
Fair value of the consideration transferred$3,976,905
 $
 $3,976,905
      
Cash and cash equivalents$28,484
 $
 $28,484
Restricted cash and fixed maturity securities85,615
 
 85,615
Trade and other receivables411,767
 
 411,767
Prepaid expenses44,564
 
 44,564
Other current assets19,736
 
 19,736
Property and equipment1,522,123
 
 1,522,123
Identifiable intangible assets ¹1,285,900
 165,800
 1,451,700
Other noncurrent assets18,537
 
 18,537
Total assets3,416,726
 165,800
 3,582,526
      
Accounts payable(188,411) 
 (188,411)
Accrued liabilities ²(232,280) (6,466) (238,746)
Claims accruals(306,846) 
 (306,846)
Long-term debt and capital lease obligations(894,681) 
 (894,681)
Deferred tax liabilities ¹ ²(741,405) (61,900) (803,305)
Other long-term liabilities(18,452) 
 (18,452)
Total liabilities(2,382,075) (68,366) (2,450,441)
      
Goodwill ¹ ²$2,942,254
 $(97,434) $2,844,820
      
1Adjustments made to identifiable intangible assets, goodwill, and deferred tax liabilities pertain to management's re-evaluation of the royalty rate used associated with certain trade names.
2Adjustments made to accrued liabilities, goodwill, and deferred tax liabilities were due to new information obtained related to certain legal matters that were outstanding as of the 2017 Merger closing date.
criteria for separate recognition. The goodwill is primarily attributable to Swift's existing workforce and the synergiesnot expected to arise after the 2017 Merger. These acquired capabilities, when combined with Knight's business, will result in opportunities that allow us to provide services under contracts that could not have been pursued individually by either Knight or Swift. The Company allocated goodwill to its reportable segments (as presented in Note 11). The goodwill will not be deductible for tax purposes.

ACT
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Dothan, Alabama-based ACT. ACT is a leading LTL carrier that also offers dedicated contract carriage and ancillary services.
The estimated fair value of the acquired identifiable intangible assets is based on a valuation completed for Swift, along with related tangible assets, using a combination of the income method and comparable market transactions. Following are the details of the preliminarytotal purchase price allocatedconsideration of $1.31 billion consisted of $1.30 billion in cash and $10.0 million in Knight-Swift shares issued to sellers at closing. Additionally, the identifiable intangible assets acquired:
 Estimated Life Estimated Fair Value as of September 9, 2017 Adjustments ¹ Adjusted Estimated Fair Value as of September 9, 2017
 (years) (thousands)
Customer relationships10 - 20 years $817,200
 $(700) $816,500
Trade nameindefinite 468,700
 166,500
 635,200
Total identifiable intangible assets  $1,285,900
 $165,800
 $1,451,700
        

1See 1, above for nature of the adjustments made to intangible assets.
The Company's 2017 consolidated financial statements include Swift's resultsCompany assumed $36.5 million in debt, net of operations after September 8, 2017 (closing ofcash. Cash was funded from the 2017 Merger) through December 31, 2018. During 2017, Swift's total revenue and net income included within the Company's consolidated operating results was $1.3 billion and $95.7 million, respectively. Swift's net income for this period includes a $16.8 million impairment charge primarily related to termination of implementation of Swift's ERP system,July 2021 Term Loan, as well as $12.9 million related toexisting Knight-Swift liquidity. ACT was an S corporation for tax purposes, and the amortization of intangibles acquired in the 2017 Merger.
Abilene Acquisition
On March 16, 2018, the Company purchased 100.0% of the equity interests of Abilene. Abilene is a diversified truckload carrier located in Richmond, Virginia operating throughout the US and Canada.
The total consideration of $103.3 million consisted of approximately $80.5 million in cash consideration to the sellers, plus approximately $22.8 million for debt payoffs. The Company funded the Abilene Acquisition through cash-on-hand and borrowing on the Revolver on the date of the transaction. At closing, $7.0 million of the purchase price was placed in escrow to secure the sellers' indemnification obligations and an additional $4.5 million of the purchase price was placed in escrow in respect of certain tax obligations of the sellers and remains subject to further adjustments.
The equity purchase agreementtransaction included an election under the Internal Revenue Code Section 338(h)(10). Accordingly, the book and tax basis of the acquired assets and liabilities are the same as of the purchase date. The equity purchase agreementSPA contains customary representations, warranties, covenants, and indemnification provisions.covenants.
The results of the acquired business have been included in theCompany's consolidated financial statements sincefor 2021 include ACT's operating results beginning July 5, 2021 (closing of the date of acquisition and represent 2.0% in 2019 and 1.6% in 2018 ofacquisition) through December 31, 2021. During 2021, the Company's consolidated operating results included ACT's total revenue and 2.3% in 2019 and 2.1% in 2018 of consolidated$386.8 million and net income attributableof $23.1 million. ACT's net income during 2021 included $7.0 million related to Knight-Swift . Thethe amortization of intangible assets acquired business also represented 1.6% and 1.7% of consolidated total assets as of December 31, 2019 and 2018, respectively.in the ACT Acquisition.
The goodwill recognized represents expected synergies from combining the operations of AbileneACT with the Company, including enhanced service offerings, and sharing best practices in terms of driver recruiting and retention, as well as other intangible assets that did not meet the criteria for separate recognition. The goodwill is expected to be deductible for tax purposes.
The purchase price was allocated based on estimated fair values of the assets acquired and liabilities assumed at the acquisition date. The purchase price allocation was open for adjustments through the end of the measurement period, which closed one year from the March 16, 2018 acquisition date.

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The following table summarizes the fair value of the consideration transferred as of the acquisition date, including any adjustments during the measurement period:
 March 16, 2018 Opening Balance Sheet Adjustments 
Adjusted
March 16, 2018 Opening Balance Sheet
 (in thousands)
Fair value of the consideration transferred$103,223
 $124
 $103,347
      
Cash1,654
 
 1,654
Trade receivables11,745
 1,265
 13,010
Other assets7,785
 842
 8,627
Property and equipment41,403
 (41) 41,362
Identifiable intangible assets ¹23,000
 (400) 22,600
Total assets85,587
 1,666
 87,253
      
Accounts payable1,959
 1,577
 3,536
Accrued liabilities2,419
 4,942
 7,361
Claims accruals230
 179
 409
Total liabilities4,608
 6,698
 11,306
      
Goodwill$22,244
 $5,156
 $27,400
      
1Includes $17.9 million in customer relationships and a $4.7 million trade name.
The above adjustments were related to the completion of an independent valuation of certain acquired intangible assets, the identification of liabilities associated with capital expenditures incurred prior to the acquisition, adjustments for Abilene’s adoption of ASC Topic 606, and the associated deferred tax asset impact of these adjustments. No material statement of comprehensive income effects were identified with these adjustments.
Consolidated Pro Forma Information
(Unaudited) The following unaudited pro forma information combines the historical operations of Knight-Swiftthe Company and AbileneACT giving effect to the AbileneACT Acquisition, and related transactions as if they had been consummated on January 1, 2018,2020, the beginning of the comparative periodsperiod presented.
 2018
 (in thousands, except per share data)
Total revenue$5,366,551
Net income attributable to Knight-Swift$419,812
Earnings per diluted share$2.36

20212020
(in thousands, except per share data)
Total revenue$6,387,329 $5,374,934 
Net income attributable to Knight-Swift763,393 437,835 
Earnings per share – diluted4.57 2.57 
The unaudited pro forma condensed combined financial information has been presented for comparative purposes only and includes certain adjustments such as recognition of assets acquired at estimated fair values and related depreciation and amortization, elimination of transaction costs incurred by Knight-Swift and AbileneACT during the periods presented that were directly related to the AbileneACT Acquisition, and related income tax effects.effects of these items. As a result of the AbileneACT Acquisition, the Company incurred certain acquisition-related expenses totaling $0.2$2.9 million during in 2021.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
These expenses thatwere eliminated in the Company incurred from the Abilene Acquisition are eliminated from presentation of the unaudited pro forma net"Net income attributable to Knight-Swift" presented above.
The unaudited pro forma condensed combined financial information does not purport to represent the actual results of operations that Knight-Swift and AbileneACT would have achieved had the companies been combined during the periods presented in the unaudited pro forma condensed combined financial statements and is not intended to project the future results of operations that the combined company may achieve after the identified transactions. The unaudited pro forma condensed combined financial information does not reflect any cost savings that may be realized as a result of the AbileneACT Acquisition and also does not reflect any restructuring or integration-related costs to achieve those potential cost savings.

UTXL
On June 1, 2021, pursuant to an SPA, the Company, through a wholly owned subsidiary, acquired 100.0% of the equity interests of UTXL, a premier third-party logistics company which specializes in over-the-road full truckload and multi-stop loads.
The total purchase price consideration of $37.2 million, including cash-on-hand and net working capital adjustments, consisted of $32.2 million in cash to the sellers at closing, which was funded through cash-on-hand and borrowing on the 2017 Revolver on the transaction date. At closing $2.25 million of the cash consideration was placed in escrow to secure certain of the sellers' indemnification obligations and remains subject to further adjustments.
The purchase price also included contingent consideration consisting of two additional annual payments of up to $2.5 million each ($5.0 million in total), representing the maximum possible annual deferred payments to the sellers based on operating ratio and revenue growth targets for each of the twelve-month periods ending May 31, 2022 and May 31, 2023. As of December 31, 2021, $2.5 million is included in "Accrued liabilities" and $2.5 million is included in "Other long-term liabilities" in the Company's consolidated balance sheets, depending on the expected payment dates.
For income tax purposes, the sale of UTXL's equity interests to the Company is intended to be treated as a sale and purchase of assets. Accordingly, the book and tax basis of the acquired assets and liabilities are the same as of the purchase date. The SPA contains customary representations, warranties, covenants, and indemnification provisions.
The goodwill recognized represents expected synergies from combining the operations of UTXL with the Company, including enhanced service offerings, as well as other intangible assets that did not meet the criteria for separate recognition. The goodwill is expected to be deductible for tax purposes.
Eleos
On February 1, 2021, pursuant to a membership interest purchase agreement ("MIPA"), the Company, through a wholly owned subsidiary, acquired 79.44% of the issued and outstanding membership interests of Eleos, a Greenville, South Carolina-based software provider, specializing in mobile driving platforms, which complement the Company's suite of services. The total purchase price consideration, including cash-on-hand and net working capital adjustments, consisted of $41.5 million in cash to the sellers at closing, which was funded through cash-on-hand and borrowing on the 2017 Revolver on the transaction date. At closing, $4.1 million of the cash consideration was placed in escrow to secure certain of the sellers' indemnification obligations and other items.
The MIPA included that both the buyer and sellers would file an election under the Internal Revenue Code Section 754 to adjust the tax basis of the Company's assets and liabilities, with respect to the buyer's purchase of the equity. The MIPA contains customary representations, warranties, covenants, and indemnification provisions for transactions of this nature.
The goodwill recognized represents expected synergies from combining the operations of Eleos with the Company, including enhanced service offerings, as well as other intangible assets that did not meet the criteria for separate recognition. The goodwill is expected to be deductible for tax purposes.
100
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Warehousing Co.
Other Acquisition
On January 1, 2020,, pursuant to a SPA the Company purchasedacquired 100.0% of the equity interests of a small company, complementary to its suite of services, forWarehousing Co. with locations throughout the central US.
The total purchase price consideration of approximately $72.5 million. This$66.9 million consisted of $48.2 million in cash to the sellers at closing, which was funded through cash-on-hand and borrowing on the 2017 Revolver on the transaction date. At closing, $6.8 million of the cash consideration and approximately $24.3was placed in escrow to secure certain of the sellers' indemnification obligations. During the third quarter of 2020, the escrow proceeds were released to the sellers pursuant to the SPA. The purchase price also included contingent consideration consisting of three additional annual payments of up to $8.1 million each ($24.3 million in potentialtotal), representing the maximum possible annual deferred payments to the former shareholders,sellers based on Warehousing Co.'s earnings before interest and taxes ("EBIT") for each of the calendar years ending December 31, 2020, December 31, 2021, and the annualized six-month period ending June 30, 2022. In order to estimate Warehousing Co.'s future performance, the Company utilized the Monte Carlo simulation method using certain inputs, including Warehousing Co.'s forecasted EBIT, discount rate, dividend yields, expected volatility, and expected stock returns during the above measurement periods. Based on the above inputs, the present value of the total contingent uponconsideration, along with the estimated net working capital adjustment equaled $18.7 million as of January 1, 2020. During the measurement period, the net working capital adjustment was reduced by $0.4 million based on the actual versus estimated net working capital adjustment as of the transaction date. This adjustment resulted in the total estimated contingent consideration and net working capital adjustment decreasing to $18.3 million. The total purchase price consideration, as if adjusted at the January 1, 2020 transaction date, is identified in the "Purchase Price Allocations" table within this footnote.
During the fourth quarter of 2020, the Company paid the first annual payment of $8.1 million as a result of the achievement of certainWarehousing Co.’s EBIT performance thresholds. target for the calendar year December 31, 2020.The acquisition is not considered significant and does not require separate reporting.Additionally, during the fourth quarter of 2020, the Company increased the estimated fair value of the remaining contingent consideration representing the final two annual payments, resulting in a $6.7 million fair value adjustment of the deferred earnout, which was recorded in “Miscellaneous operating expenses” in the consolidated statement of comprehensive income.During the fourth quarter of 2021, the Company paid the second annual payment of $8.1 million as a result of the achievement of Warehousing Co.’s EBIT performance target for the calendar year 2021.
As of December 31, 2021, the remaining estimated contingent consideration was $8.1 million representing the fair value of the remaining annual deferred payments for the annualized six-month period ending June 30, 2022, all of which was recorded in "Accrued liabilities" in the consolidated balance sheets. As of December 31, 2020, the remaining contingent consideration was $16.2 million representing the fair value of the remaining annual deferred payments for the calendar year December 31, 2021 and the annualized six-month period ending June 30, 2022. As of December 31, 2020, $8.1 million of the total was recorded in "Accrued liabilities" in the consolidated balance sheets and the remaining $8.1 million was recorded in "Other long-term liabilities" in the consolidated balance sheets.
The SPA included an election under the Internal Revenue Code Section 338(h)(10). Accordingly, the book and tax basis of the acquired assets and liabilities are the same as of the purchase date. The SPA contains customary representations, warranties, covenants, and indemnification provisions.
The goodwill recognized represents expected synergies from combining the operations of Warehousing Co. with the Company, including enhanced service offerings, as well as other intangible assets that did not meet the criteria for separate recognition. The goodwill is expected to be deductible for tax purposes.
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
Purchase Price Allocations
The purchase price allocations for the Company's acquisitions are preliminary, except for Warehousing Co., and have been allocated based on estimated fair values of the assets acquired and liabilities assumed at the acquisition dates, and among other things may be pending the completion of the valuation of acquired tangible assets, an independent valuation of certain acquired intangible assets, assessment of lease agreements, assessment of certain liabilities, the calculation of deferred taxes based upon the underlying tax basis of assets acquired and liabilities assumed, and assessment of other tax related items as applicable. As the Company obtains more information, the preliminary purchase price allocations disclosed below are subject to change. Any future adjustments to the preliminary purchase price allocations, including changes within identifiable intangible assets or estimation uncertainty impacted by market conditions, may impact future net earnings. The purchase price allocation adjustments can be made through the end of the measurement periods, which are not to exceed one year from the respective acquisition dates.
MMEACTUTXLEleos
Warehousing Co.1
December 6, 2021 Opening Balance Sheet as Reported at December 31, 2021July 5, 2021 Opening Balance Sheet as Reported at December 31, 2021June 1, 2021 Opening Balance Sheet as Reported at December 31, 2021February 1, 2021 Opening Balance Sheet as Reported at December 31, 2021January 1, 2020 Opening Balance Sheet as Reported at December 31, 2021
Fair value of the consideration transferred$164,382 $1,306,214 $37,230 $41,518 $66,444 
Cash and cash equivalents14,716 17,477 8,206 2,237 1,388 
Trade receivables21,915 104,220 9,451 545 3,301 
Prepaid expenses2,067 15,803 — 47 608 
Other current assets462 3,537 — — 78 
Property and equipment49,192 427,722 54 — 1,938 
Operating lease right-of-use assets52,065 4,053 — 560 12,356 
Identifiable intangible assets 2
52,960 406,160 22,121 15,850 55,681 
Other noncurrent assets139 1,739 — — 458 
Total assets193,516 980,711 39,832 19,239 75,808 
Accounts payable(7,681)(19,386)(14,183)(156)(347)
Accrued payroll and payroll-related expenses(7,106)(33,411)(247)(605)— 
Accrued liabilities(544)(9,302)(69)(1,391)(644)
Claims accruals – current and noncurrent portions(1,090)(40,958)(418)— — 
Operating lease liabilities – current and noncurrent portions(46,375)(4,052)— (560)(12,356)
Long-term debt – current and noncurrent portions— (54,024)— — — 
Deferred tax liabilities(19,009)— — — — 
Other long-term liabilities(568)(4,243)— (475)— 
Total liabilities(82,373)(165,376)(14,917)(3,187)(13,347)
Noncontrolling interest— — — (10,281)— 
Total stockholders' equity— — — (10,281)— 
Goodwill$53,239 $490,879 $12,315 $35,747 $3,983 
1See above for a description of the working capital adjustments made to Warehousing Co.'s purchase price allocation during the measurement period.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
2Includes $372.2 million in customer relationships ($250.8 million attributed to ACT), $2.0 million in noncompete agreements ($0.8 million attributed to ACT), $10.5 million in internally developed software ($6.5 million attributable to ACT), and $168.0 million in trade names ($148.1 million attributed to ACT).

Note 65 Restricted Investments Held-to-Maturity
The following table presents the cost or amortized cost, gross unrealized gains and temporary losses, and estimated fair value of the Company's restricted investments: 
December 31, 2021
Gross Unrealized
Cost or Amortized CostGainsTemporary
Losses
Estimated Fair Value
(In thousands)
US corporate securities$5,866 $— $(7)$5,859 
Restricted investments, held-to-maturity$5,866 $— $(7)$5,859 
 December 31, 2019
   Gross Unrealized  
 Cost or Amortized Cost Gains Temporary
Losses
 Estimated Fair Value
 (In thousands)
US corporate securities$8,912
 $4
 $(1) $8,915
Restricted investments, held-to-maturity$8,912
 $4
 $(1) $8,915
        
 December 31, 2018
   Gross Unrealized  
 Cost or Amortized Cost Gains Temporary
Losses
 Estimated Fair Value
 (In thousands)
US corporate securities$15,296
 $1
 $(16) $15,281
Municipal bonds1,082
 
 
 1,082
Negotiable certificates of deposit1,035
 
 
 1,035
Restricted investments, held-to-maturity$17,413
 $1
 $(16) $17,398
        

December 31, 2020
Gross Unrealized
Cost or Amortized CostGainsTemporary
Losses
Estimated Fair Value
(In thousands)
US corporate securities$9,001 $$(8)$8,995 
Restricted investments, held-to-maturity$9,001 $$(8)$8,995 
As of December 31, 2019,2021, the contractual maturities of the restricted investments were one year or less. There were 711 and 2016 securities that were in an unrealized loss position, all for less than twelve months as of December 31, 20192021 and 2018,2020, respectively. The Company did not recognize any impairment losses related to restricted investments during 2019, 2018,2021, 2020, or 2017.2019.
Refer to Note 2 for the related accounting policy and Note 23 for additional information regarding fair value measurements of restricted investments.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Note 76 Equity Investments
Transportation Resource Partners
Since 2003, Knightthe Company has entered into partnership agreements with entities that make privately-negotiated equity investments, including Transportation Resource Partners ("TRP"), Transportation Resource Partners III, LP ("TRP III"), TRP Capital Partners, LP ("TRP IV"), TRP Capital Partners V, LP ("TRP V"), TRP CoInvest Partners, (NTI) I, LP ("TRP IV Coinvestment NTI"), TRP CoInvest Partners, (QLS) I, LP ("TRP IV Coinvestment QLS"), and TRP Coinvest Partners, FFR I, LP ("TRP IV Coinvestment FFR"), and TRP Coinvest Partners V (PW) I, LP ("TRP V Coinvest"). In these agreements, Knightthe Company committed to invest in return for an ownership percentage.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
The following table presents ownership and commitment information for Knight'sthe Company's investments in TRP partnerships:
December 31, 2021
Knight-Swift's Ownership Interest 1
Total Commitment (All Partners)Knight-Swift's Contracted CommitmentKnight-Swift's Remaining Commitment
(Dollars in thousands)
TRP III – equity method investment 3 5
6.0 %$245,000 $15,000 $1,692 
TRP IV – equity investment 2 4
4.2 %$116,065 $4,900 $654 
TRP IV Coinvestment NTI – equity method investment 5
— %$120,000 $10,000 $— 
TRP IV Coinvestment QLS – equity method investment25.0 %$39,000 $9,735 $— 
TRP IV Coinvestment FFR – equity method investment 5
7.4 %$66,555 $4,950 $— 
TRP V - equity method investment 6
16.6 %$180,700 $30,000 $17,803 
TRP V Coinvest - equity method investment 5 6
13.3 %$30,000 $4,000 $— 
 December 31, 2019
 
Knight's Ownership
 Interest 1
 Total Commitment (All Partners) Knight's Contracted Commitment Knight's Remaining Commitment
 (Dollars in thousands)
TRP – equity investment 2
2.4% $260,000
 $5,500
 $
TRP III – equity method investment 3
4.9% $245,000
 $15,000
 $1,715
TRP IV – equity investment 2 4
4.4% $116,000
 $4,900
 $750
TRP Coinvestment NTI – equity method investment 5
8.3% $120,000
 $10,000
 $
TRP Coinvestment QLS – equity method investment 5
25.0% $39,000
 $9,735
 $
TRP Coinvestment FFR – equity method investment 5 6
7.4% $66,555
 $4,950
 $
        
1The Company's share of the results is included within "Other income, net" in the consolidated statements of comprehensive income.
2In accordance with ASC 321, Investments – Equity Securities, these investments are recorded at cost minus impairment.
3Management anticipates that $1.7 million will be due in 2022.
4Management anticipates that the following amounts will be due: $0.1 million in 2022, $0.1 million from 2023 through 2024, $0.5 million in 2025, and none thereafter.
5The TRP III, TRP IV Coinvestments, TRP V, and TRP V Coinvest are unconsolidated majority interests. Management considered the criteria set forth in ASC 323, Investments – Equity Method and Joint Ventures, to establish the appropriate accounting treatment for these investments. This guidance requires the use of the equity method for recording investments in limited partnerships where the "so minor" interest is not met. As such, the investments are being accounted for under the equity method. Knight's ownership interest reflects its ultimate ownership of the portfolio companies underlying the TRP III, TRP IV Coinvestment NTI, TRP IV Coninvestment QLS, TRP IV Coinvestment FFR, TRP V, and TRP V Coninvest legal entities.
6Management anticipates that the following amounts will be due: $7.2 million in 2022, $7.2 million from 2023 through 2024, $0.9 million from 2025 through 2026, and $2.5 million thereafter.
Embark
During the second quarter of 2021, the Company invested $25.0 million in Embark in exchange for a convertible note. The terms of the agreement provided that the amount outstanding on the convertible note would be automatically converted into a number of shares of Embark's common stock upon either the closing of a qualified financing or upon a public event, subject to discounted conversion pricing per share based on a valuation of Embark.
In November 2021, Embark and Northern Genesis Acquisition Corp II, a publicly-traded special purpose acquisition company, completed a business combination agreement entered into on June 22, 2021, resulting in Embark becoming a publicly-traded company. In association with this transaction, the Company's convertible note automatically converted into a number of shares of Embark's common stock as outlined above. Further, the Company acquired an additional $25.0 million in Embark's common stock pursuant to a common stock subscription agreement between the Company and Embark. As of December 31, 2021, the fair value of the combined investment in Embark was $54.5 million, resulting in a net unrealized gain of $4.5 million recognized during 2021 in "Operating income, net" in the consolidated statements of comprehensive income.
Other Equity Method Investments
On October 1, 2020, the Company used approximately $39.6 million in cash to purchase 21.0% of the equity interests of a transportation-related company ("Holdings Co."), complementary to its suite of services. Based on Holdings Co.'s board of directors and the Company's minority rights, the Company has concluded that its investment allows it to exercise significant influence over the operational and financial decisions of Holdings Co. and therefore has recorded the transaction as an equity method investment.
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1
The Company's share of the results is included within "Other income, net" in the consolidated statements of comprehensive income.
KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
The carrying amount of the Company's initial investment in Holdings Co. was approximately $36.6 million in excess of the Company's initial underlying equity interest in the net assets in Holdings Co. This basis difference represents the Company's proportionate share of the fair value of Holdings Co.'s net tangible assets and its identified intangible assets, with the remaining excess recognized as equity method goodwill. The Company's proportionate share of certain identified definite-lived intangibles are amortized over their estimated useful lives and accreted against the earnings recognized from the Company's interest in Holdings Co.
Net Investment Balances
2
In accordance with ASC Topic 321, Investments – Equity Securities, these investments are recorded at cost minus impairment.
3Management anticipates that the following amounts will be due: $1.7 million in 2020.
4
Management anticipates that the following amounts will be due: $0.1 million in 2020, $0.2 million from 2021 through 2022, $0.2 million from 2023 through 2024, and $0.3 million thereafter.
5
The TRP Coinvestments are unconsolidated majority interests. Management considered the criteria set forth in ASC 323, Investments – Equity Method and Joint Ventures, to establish the appropriate accounting treatment for these investments. This guidance requires the use of the equity method for recording investments in limited partnerships where the "so minor" interest is not met. As such, the investments are being accounted for under the equity method. Knight's ownership interest reflects its ultimate ownership of the portfolio companies underlying the TRP Coinvestment NTI, TRP Coinvestment QLS, and TRP Coinvestment FFR legal entities.
6The Company entered into the agreement in the first quarter of 2019.
Net investment balances included in "Other long-term assets" in the consolidated balance sheets were as follows:
December 31,
20212020
(in thousands)
TRP III – equity method investment$801 $217 
TRP IV – equity investment 1
2,952 
TRP IV Coinvestment NTI – equity method investment37 5,609 
TRP IV Coinvestment QLS – equity method investment12,444 16,240 
TRP IV Coinvestment FFR – equity method investment6,761 4,905 
TRP V – equity method investment12,043 3,304 
TRP V Coinvest – equity method investment4,859 4,000 
Holdings Co. – equity method investment 2
38,821 40,335 
Embark – equity investment$54,467 $— 
Total carrying value$130,236 $77,562 
1In accordance with ASC 321, Investments – Equity Securities, these investments are recorded at cost minus impairment.
2In accordance with ASC 323, Investments – Equity Method and Joint Ventures, the net investment balance includes accretion of amortization of certain definite-lived intangibles.
90
 December 31,
 2019 2018
 (in thousands)
TRP – equity investment ¹$
 $211
TRP III – equity method investment252
 1,781
TRP IV – equity investment ¹3,068
 2,022
TRP Coinvestment NTI – equity method investment6,225
 5,547
TRP Coinvestment QLS – equity method investment16,383
 11,085
TRP Coinvestment FFR – equity method investment4,950
 
Total carrying value$30,878
 $20,646
    
1
In accordance with ASC Topic 321, Investments – Equity Securities, these investments are recorded at cost minus impairment.

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Note 87 — Trade Receivables, net
Trade receivables, net balances were as follows:comprised of the following:
December 31,
20212020
(In thousands)
Trade customers$847,305 $570,611 
Equipment manufacturers11,923 5,680 
Insurance premiums 1
43,455 5,804 
Other 1
30,316 18,477 
Trade receivables932,999 600,572 
Less: Allowance for doubtful accounts(21,663)(22,093)
Trade receivables, net$911,336 $578,479 
 December 31,
 2019 2018 ¹
 (In thousands)
Trade customers$511,487
 $581,475
Equipment manufacturers5,146
 7,166
Other20,092
 28,942
Trade receivables536,725
 617,583
Less: Allowance for doubtful accounts(18,178) (16,355)
Trade receivables, net$518,547
 $601,228
    
1    Prior year amounts within the table above have been reclassified to conform to current year presentation.

1Refer to Note 1 for change in presentation regarding "Contract balance – revenue in transit"
The following is a rollforward of the allowance for doubtful accounts for trade receivables:
202120202019
(In thousands)
Beginning balance$22,093 $18,178 $16,355 
Provision10,900 17,267 16,925 
Write-offs directly against the reserve(776)(902)(2,652)
Write-offs for revenue adjustments(11,504)(12,450)(12,450)
Other 1
950 — — 
Ending balance$21,663 $22,093 $18,178 
 2019 2018 2017
 (In thousands)
Beginning balance$16,355
 $14,829
 $2,727
Provision (reduction)16,925
 (3,092) 4,671
Write-offs directly against the reserve(2,652) (1,362) (1,583)
Write-offs for revenue adjustments(12,450) 5,861
 (3,758)
Other ¹
 119
 12,772
Ending balance$18,178
 $16,355
 $14,829
      
1    Represents allowance for doubtful trade accounts receivables assumed in 2021 from the Company's acquisitions. See Note 4 for further details regarding these acquisitions.

1Increase in allowance for doubtful accounts relates to trade receivables assumed in 2017 from Swift as part of the 2017 Merger and in 2018 from the Abilene Acquisition. See Note 5 for further details regarding these transactions.
See Note 1514 for a discussion of the Company's accounts receivable securitization program and the related accounting treatment.
Note 98 — Notes Receivable, net
The Company provides financing to independent contractors and other third-partiesthird parties on equipment sold or leased. Most of the notes are collateralized and are due in weekly installments, including principal and interest payments, ranging from 5%5.1% to 18%15.0%. Notes receivable are included in "Other current assets" and "Other long-term assets" in the consolidated balance sheets and were comprised of:
December 31,
20212020
(In thousands)
Notes receivable from independent contractors$5,969 $7,291 
Convertible note receivable from third party10,141 — 
Notes receivable from other third parties994 3,034 
Gross notes receivable17,104 10,325 
Allowance for doubtful notes receivable(496)(602)
Total notes receivable, net of allowance$16,608 $9,723 
Current portion, net of allowance1,848 2,846 
Long-term portion$14,760 $6,877 
Convertible Note
 December 31,
 2019 2018
 (In thousands)
Notes receivable from independent contractors$9,167
 $9,318
Notes receivable from third parties6,164
 7,075
Gross notes receivable15,331
 16,393
Allowance for doubtful notes receivable(503) (1,051)
Total notes receivable, net of allowance$14,828
 $15,342
    
Current portion, net of allowance4,163
 4,563
Long-term portion$10,665
 $10,779
    
91


103


KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

During the fourth quarter of 2021, the Company invested $10.0 million in a third-party company in exchange for a convertible note. The followingconvertible note accrues simple interest on the unpaid principal balance at a rate of 12.0% and is a rollforwardpayable on demand any time after August 27, 2023, unless earlier converted into shares of the allowance for doubtful notes receivable:third-party company's common stock. The amount outstanding on the convertible note is converted into a number of shares of the third-party company's common stock upon either the closing of a qualified financing, or at the Company's election in connection with a non-qualified financing, a change of control, or at maturity, subject to discounted conversion pricing per share based on a valuation of the third-party company.
 2019 2018 2017
 (In thousands)
Beginning balance$1,051
 $1,040
 $240
(Reduction) provision(137) (100) 574
Write-offs(411) (103) (53)
Other ¹
 214
 279
Ending balance$503
 $1,051
 $1,040
      
1Represents an increase in allowance for doubtful notes associated with notes receivable assumed in 2017 from Swift as part of the 2017 Merger and in 2018 from the Abilene Acquisition. See Note 5 for further details regarding these transactions.
Note 109 — Assets Held for Sale
The Company expects to sell its assets held for sale within the next twelve months. Revenue equipment held for sale totaled $41.8$8.2 million and $40.0$29.8 million as of December 31, 20192021 and 2018,2020, respectively. Net gains on disposals, including disposals of property and equipment classified as assets held for sale, reported in "Miscellaneous operating expenses" in the consolidated statements of comprehensive income were $74.8 million during 2021, $9.7 million during 2020, and $32.9 million during 2019 and $37.0 million during 2018.2019.
The Company's net carrying value of land and facilities classified as held for sale in the consolidated balance sheets as of December 31, 2019 and December 31, 2018 wasDuring 02021.
In 2019,, the Company incurred $0.4impairment losses of $0.3 million, of impairment lossesprimarily related to certain Swiftlegacy trailer models. During 2020, the Company incurred impairment losses of $0.5 million, primarily related to certain tractors and trailers as a result of a softer used equipment market. During 2019, the Company incurred impairment losses of $0.4 million primarily related to certain legacy trailer models as a result of a softer used equipment market. The Company did not recognize any impairment losses related to assets held for sale during 2018 and 2017.
Note 1110 — Goodwill and Other Intangible Assets
Goodwill
The changes in the carrying amounts of goodwill were as follows:
202120202019
(In thousands)
Goodwill at beginning of period$2,922,964 $2,918,992 $2,919,176 
Amortization relating to deferred tax assets(9)(11)(232)
Acquisitions 1
592,180 3,983 48 
Goodwill at end of period$3,515,135 $2,922,964 $2,918,992 
 2019 2018
 (In thousands)
Goodwill at beginning of period$2,919,176
 $2,887,867
Amortization relating to deferred tax assets(232) (17)
Abilene Acquisition ¹48
 27,352
Goodwill related to 2017 Merger ²
 3,974
Goodwill at end of period$2,918,992
 $2,919,176
    
1The goodwill associated with the ACT and MME acquisitions was allocated to the LTL segment. The goodwill associated with the UTXL acquisition was allocated to the Logistics segment. The goodwill associated with the Warehousing Co, and Eleos acquisitions was allocated to the non-reportable segments. See Note 4 regarding the amount attributed to adjustments to the opening balance sheets.
1The goodwill associated with the Abilene Acquisition was allocated to the Trucking segment. See Note 5 regarding the amount attributed to adjustments to the March 17, 2018 opening balance sheet.
2The goodwill adjustment associated with the 2017 Merger was allocated to the Trucking segment. See Note 5 regarding the nature of the adjustment.

The following presents the components of goodwill by reportable segment as of December 31, 2021 and 2020:
December 31,
20212020
Net Carrying Amount 1
Net Carrying Amount 1
(In thousands)
Truckload$2,658,086 $2,658,095 
Logistics54,827 42,512 
LTL544,118 — 
Intermodal175,594 175,594 
Non-reportable82,510 46,763 
Goodwill$3,515,135 $2,922,964 
1Except for the net accumulated amortization related to deferred tax assets in the Truckload segment, the net carrying amount and gross carrying amount are equal since there are no accumulated impairment losses.
There were no impairments identified during annual goodwill impairment testing in 2021, 2020, or 2019.
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

The following presents the components of goodwill by segment as of December 31, 2019 and 2018:
 December 31,
 2019 2018
 Net Carrying Amount ¹ Net Carrying Amount ¹
 (In thousands)
Trucking$2,658,106
 $2,658,290
Intermodal175,594
 175,594
Logistics42,512
 42,512
Non-reportable42,780
 42,780
Goodwill$2,918,992
 $2,919,176
    

1Except for the net accumulated amortization related to deferred tax assets in the Trucking segment, the net carrying amount and gross carrying amount are equal since there are no accumulated impairment losses.
There were 0 impairments identified during annual goodwill impairment testing in 2019, 2018, or 2017.
Other Intangible Assets
Other intangible asset balances were as follows:
December 31,
20212020
(In thousands)
Definite-lived intangible assets: 1
Gross carrying amount$1,227,630 $894,597 
Accumulated amortization(201,139)(145,852)
Definite-lived intangible assets, net1,026,491 748,745 
Indefinite-lived trade names:
Gross carrying amount804,558 640,500 
Intangible assets, net$1,831,049 $1,389,245 
 December 31,
 2019 2018
 (In thousands)
Customer relationships and non-compete:   
Gross carrying amount ¹$839,516
 $838,100
Accumulated amortization(99,957) (57,081)
Customer relationships and non-compete, net739,559
 781,019
Trade names:   
Gross carrying amount639,900
 639,900
Intangible assets, net$1,379,459
 $1,420,919
    

1
1The $1.4 million increase in the gross carrying amount of intangible assets from December 31, 2018 to December 31, 2019 is primarily due to a small acquisition that occurred during 2019.
The following table presents amortizationmajor categories of the Company's definite-lived intangible assets related to the 2017 Mergerinclude customer relationships, non-compete agreements, internally-developed software, trade names, and intangible assets related to various acquisitions:
 2019 2018 2017
 (In thousands)
Amortization of intangible assets related to the 2017 Merger$41,375
 $41,375
 $12,872
Amortization related to other intangible assets1,501
 1,209
 500
Amortization of intangibles$42,876
 $42,584
 $13,372
      

others. Identifiable intangible assets subject to amortization have been recorded at fair value. Intangible assets related to acquisitions other than the 2017 Merger are amortized over a weighted-average amortization period of 17.3 years.19.0 years. The Company's customer relationship intangible assets related to the 2017 Merger are being amortized over a weighted average amortization period of 19.9 years.
The following table presents amortization of intangible assets related to the 2017 Merger and various acquisitions:
202120202019
(In thousands)
Amortization of intangible assets related to the 2017 Merger$41,375 $41,375 $41,375 
Amortization related to other intangible assets13,924 4,520 1,501 
Amortization of intangibles$55,299 $45,895 $42,876 
As of December 31, 2019,2021, management anticipates that the composition and amount of amortization associated with intangible assets will be $42.8$64.7 million in 2022, $64.2 million for each of the years 20202023 and 2021, $42.72024, $64.1 million in 2022,2025, and $42.4$62.7 million in each of the years 2023 and 2024.2026. Actual amounts of amortization expense may differ from estimated amounts due to additional intangible asset acquisitions, impairment of intangible assets, accelerated amortization of intangible assets, and other events.
See Note 2 for accounting policies regarding goodwill and other intangible assets.

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Note 1211 — Accrued Payroll and Purchased Transportation and Accrued Liabilities
The following table presents the composition of accrued payroll and purchased transportation:
December 31,
20212020
(In thousands)
Accrued payroll 1
$146,326 $114,835 
Accrued purchased transportation70,758 46,053 
Accrued payroll and purchased transportation$217,084 $160,888 
 December 31,
 2019 2018
 (In thousands)
Accrued payroll ¹$70,534
 $68,121
Accrued purchased transportation39,531
 58,343
Accrued payroll and purchased transportation$110,065
 $126,464
    
1    Accrued payroll includes accruals related to the various 401(k) plans the Company offers to its employees. Depending on the plan, employees must meet the minimum age requirement (18 – 21 years) and have completed ninety days or one year of service with the Company in order to qualify. Employees' rights to employer contributions are fully vested after three or five years from their date of employment. The plans offer discretionary matching contributions of the greater of 100% up to 3.0% or 6.0% of an employee's eligible compensation or $2,000.
1Accrued payroll includes accruals related to the various 401(k) plans the Company offers to its employees. In order to qualify for these plans, employees must meet the minimum age requirement (18 years) and have completed ninety days of service with the Company. Employees' rights to employer contributions are fully vested after five years from their date of employment. The plans offer discretionary matching contributions of the greater of 100% up to 3.0% of an employee's eligible compensation or $2,000.
The Company's employee benefits expense for matching contributions related to the 401(k) plans was approximately $16.2 million, $13.6 million, and $8.8 million $8.7 million,in 2021, 2020, and $3.9 million in 2019, 2018, and 2017, respectively. This expense was included in "Salaries, wages, and benefits" in the consolidated statements of comprehensive income. As of December 31, 20192021 and 2018,2020, the balance above in accrued payroll included $9.1$14.5 millionand$6.4 $12.8 million,, respectively, in matching contributions for the 401(k) plans.
93

The following table presents the composition of accrued liabilities:
 December 31,
 2019 2018
 (In thousands)
Accrued legal ¹$121,312
 $90,789
Other53,910
 60,711
Accrued liabilities$175,222
 $151,500
    

KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
1See Note 19 for details regarding the Company's legal accruals.
Note 1312 — Claims Accruals
Claims accruals represent the uninsured portion of outstanding claims at year-end. The current portion reflects the amount of claims expected to be paid in the following year. The Company's insurance programprograms for workers' compensation, auto and collision liability, physical damage, third-party carrier and independent contractor claims, and cargo damage, and medical involves self-insurance with varying risk retention levels.
Claims accruals were comprised of the following:
December 31,December 31,
2019 201820212020
(In thousands)(In thousands)
Auto reserves$224,541
 $222,004
Auto reserves$263,091 $231,875 
Workers’ compensation reserves108,035
 120,522
Workers’ compensation reserves90,481 94,609 
Third-party carrier claims reservesThird-party carrier claims reserves31,524 40 
Independent contractor claims reserves8,044
 12,170
Independent contractor claims reserves6,285 7,112 
Cargo damage reserves2,818
 2,998
Cargo damage reserves5,409 2,494 
Employee medical reserves4,279
 3,677
Employee medical and other reservesEmployee medical and other reserves20,531 13,612 
Claims accruals347,717
 361,371
Claims accruals417,321 349,742 
Less: current portion of claims accruals(150,805) (160,044)Less: current portion of claims accruals(206,607)(174,928)
Claims accruals, less current portion$196,912
 $201,327
Claims accruals, less current portion$210,714 $174,814 
   


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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Self Insurance
Automobile Liability, General Liability, and Excess Liability Effective November 1, 2020, the Company has $100.0 million in excess auto liability ("AL") coverage. Effective November 1, 2019, the Company hashad $130.0 million excess auto liability ("AL") coverage.  From November 1, 2018 to October 31, 2019, the Company had $250.0 millionin excess AL coverage. Prior to November 1, 2018, Swift’sFor prior years, Swift and Knight separately maintained varying excess AL coverage was $250.0 million and Knight’s excess AL coverage was $130.0 million.general liability limits. During the aboveprior policy periods, Swift AL claims arewere subject to a $10.0 million self-insured retention ("SIR") per occurrence and Knight AL claims arewere subject to a $1.0 million to $3.0 million SIR per occurrence. Additionally, Knight carriescarried a $2.5 million aggregate deductible for any loss or losses within the $5.0 million excess of $5.0 million layer of coverage.
Cargo Damage Effective March 1, 2020, Knight and Loss The Company is insured against cargo damage and loss with liability limits of $2.0 million per truck or trailer with aSwift retain the same $10.0 million limitSIR per occurrence. This coverage also includes a $1.0 million limit for tobacco loads and a $250 thousand deductible.
Workers' Compensation and Employers' Liability — The Company is self-insured for workers' compensation coverage. Swift maintains statutory coverage limits, subject to a $5.0 million SIR for each accident or disease. Effective March 1, 2019, Knight maintains statutory coverage limits, subject to a $2.0 million SIR for each accident or disease. Prior to March 1, 2019, the Knight SIR was $1.0 million per each accident or disease.
Cargo Damage and Loss — The Company is insured against cargo damage and loss with liability limits of $2.0 million per truck or trailer with a $15.0 million limit per occurrence.
Employee Health CareMedical Through December 31, 2019, Knight maintainedmaintains primary and excess coverage for employee medical expenses, and hospitalization, with a $0.3$0.4 million self-insured retentionSIR per claimant, whileclaimant. Through December 31, 2019, Swift was fully insured on its medical benefits (subject to contributed premiums). Effective January 1, 2020, Knight-SwiftSwift provides primary and excess coverage for employee medical expenses, and hospitalization, with self-insured retentionan SIR of $0.3$0.5 million per claimant to all employees.
ACT — ACT maintains SIRs for claims on cargo losses, employee health and welfare, bodily injury and property, general liability and workers’ compensation. Losses under the employee health and welfare, BIPD, and workers’ compensation programs are typically limited on a per claim and aggregate basis through stop-loss and excess insurance policies. Risk retention amounts per occurrence are as follows:
Workers' compensation - $1.0 million
Auto liability - $2.0 million (ACT maintains a $5.0 million annual corridor deductible subject to a $10.0 million three-year policy term aggregate cap.)
Employee medical - $1.0 million.
See Note 2 for accounting policy regarding the Company's claims accruals.
94
Note 14 — Income Taxes
The following table presents the Company's income tax expense:
 2019 2018 2017
 (In thousands)
Current expense:     
Federal$50,703
 $44,357
 $4,868
State16,616
 22,300
 8,337
Foreign5,526
 3,124
 133
 72,845
 69,781
 13,338
Deferred expense (benefit):     
Federal28,618
 59,508
 (323,326)
State3,712
 1,639
 17,731
Foreign(1,377) 461
 541
 30,953
 61,608
 (305,054)
Income tax expense (benefit)$103,798
 $131,389
 $(291,716)
      


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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Note 13 — Income Taxes
The following table presents the Company's income tax expense:
202120202019
(In thousands)
Current expense:
Federal$140,258 $80,060 $50,703 
State42,319 19,153 16,616 
Foreign8,382 4,248 5,526 
190,959 103,461 72,845 
Deferred expense (benefit):
Federal48,874 29,640 28,618 
State(10,369)7,292 3,712 
Foreign1,423 9,283 (1,377)
39,928 46,215 30,953 
Income tax expense$230,887 $149,676 $103,798 
Rate Reconciliation — Expected tax expense is computed by applying the US federal corporate income tax rate of 21.0% to earnings before income taxes for 20192021, 2020 and 2018, and 35.0% for 2017.2019. Actual tax expense differs from expected tax expense as follows:
202120202019
(In thousands)
Computed "expected" tax expense$204,673 $117,665 $86,935 
Increase (decrease) in income taxes resulting from:
State income taxes, net of federal income tax benefit23,063 22,423 17,803 
Other3,151 9,588 (940)
Income tax expense$230,887 $149,676 $103,798 
 2019 2018 2017
 (In thousands)
Computed "expected" tax expense$86,935
 $117,478
 $67,798
Increase (decrease) in income taxes resulting from:     
State income taxes, net of federal income tax benefit17,803
 19,256
 4,871
Statutory rate change effect on deferred taxes
 452
 (367,000)
Other(940) (5,797) 2,615
Income tax expense (benefit)$103,798
 $131,389
 $(291,716)
      
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
Deferred Income Taxes — The components of the net deferred tax asset (liability) included in "Deferred tax liabilities" in the consolidated balance sheets were:
 December 31,
 2019 2018
 (In thousands)
Deferred tax assets:   
Claims accrual$80,019
 $79,675
Allowance for doubtful accounts5,478
 5,333
Amortization of stock options5,769
 5,325
Accrued liabilities32,284
 27,692
Vacation accrual3,380
 3,499
Other8,595
 8,759
Total deferred tax assets135,525
 130,283
Valuation allowance
 
Total deferred tax assets, net135,525
 130,283
Deferred tax liabilities:   
Property and equipment, principally due to differences in depreciation(550,521) (503,570)
Prepaid taxes, licenses, and permits deducted for tax purposes(11,168) (10,933)
Intangible assets(345,555) (354,944)
Other
 (374)
Total deferred tax liabilities(907,244) (869,821)
Deferred tax liabilities$(771,719) $(739,538)
    

December 31,
20212020
(In thousands)
Deferred tax assets:
Claims accrual$79,496 $81,426 
Allowance for doubtful accounts5,530 5,727 
Amortization of stock options8,192 7,712 
Accrued liabilities11,497 17,941 
Operating lease liabilities34,260 29,278 
Other20,562 10,687 
Total deferred tax assets159,537 152,771 
Valuation allowance— — 
Total deferred tax assets, net159,537 152,771 
Deferred tax liabilities:
Property and equipment, principally due to differences in depreciation(635,877)(586,349)
Prepaid taxes, licenses, and permits deducted for tax purposes(15,241)(12,629)
Intangible assets(338,191)(334,618)
Operating lease right-of-use assets(34,016)(28,259)
Other(11,089)(6,857)
Total deferred tax liabilities(1,034,414)(968,712)
Deferred income taxes$(874,877)$(815,941)
Valuation Allowance — As of December 31, 2019, the Company had a federal net operating loss carryforward with estimated tax effects of $0.2 million. The federal net operating loss will expire at various times between 2030 and 2032. As of December 31, 2019, the Company had state income tax credit carryforwards for which a deferred tax asset was recorded in the amount of $0.1 million and expires in the year 2022. The Company has not established a valuation allowance as it has been determined that, based upon available evidence, a valuation allowance is not required. Management assertsbelieves that it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets. All other deferred tax assets are expected to be realized and utilized by continued profitability in future periods.
Cumulative Undistributed Foreign Earnings — As of December 31, 2019,2021, foreign withholding taxes have not been provided on approximately $85.7$107.0 million of cumulative undistributed earnings of foreign subsidiaries. The earnings are considered to be permanently reinvested outside the US. As such, the Company is not required to provide withholding taxes on these earnings until they are repatriated in the form of dividends or otherwise.

108


Unrecognized Tax Benefits — The Company's unrecognized tax benefits as of December 31, 20192021 would favorably impact the Company's effective tax rate if subsequently recognized.
See Note 2 for accounting policy related to the Company's income taxes.
A reconciliation of the beginning and ending amounts of unrecognized tax benefits for 2021, 2020, and 2019 2018, and 2017 is as follows:below:
 2019 2018 2017
 (In thousands)
Unrecognized tax benefits at beginning of year$7,423
 $7,096
 $729
Increases for tax positions taken prior to beginning of year38
 1,056
 5,432
Increases for tax positions taken in the current year
 
 935
Decreases for tax positions taken prior to beginning of year(3,378) (729) 
Unrecognized tax benefits at end of year$4,083
 $7,423
 $7,096
      

202120202019
(In thousands)
Unrecognized tax benefits at beginning of year$2,950 $4,083 $7,423 
Increases for tax positions taken prior to beginning of year— — 38 
Decreases for tax positions taken prior to beginning of year(1,215)(1,133)(3,378)
Unrecognized tax benefits at end of year$1,735 $2,950 $4,083 
Increases for tax positions are related to the benefit received for federal deductions taken on the Company's subsidiary amended returnreturns. Decreases for the 2015 tax year. Decreases in tax positions are related primarily to the release of the FIN 48 reserve for federal deductions, federal credits, and various state apportionment issues for years ranging from 2000 through 2013. The Company anticipateswhich were reserved according to ASC 740-10. Management expects a decrease of $1.0$0.3 million ofin unrecognized tax benefits during the next twelve months.
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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
Interest and Penalties — Accrued interest and penalties were approximately $0.1 million and $0.3 million as of December 31, 20192021 and 2018 were approximately $0.4 million and $1.4 million,December 31, 2020, respectively.
Tax Examinations — The Company is currently under examination by the IRS for the 2012 tax year and management does not expect any adjustments that would have a material impact on the Company's effective tax rate. Certain of the Company's subsidiaries are also currently under examination by federal and various state jurisdictions for tax years ranging from 20132014 to2017. 2020. At the completion of these examinations, management does not expect any adjustments that would have a material impact on the Company's effective tax rate. Years subsequent to 20142016 remain subject to examination.
Note 1514 Accounts Receivable Securitization
On April 23, 2021, the Company entered into the 2021 RSA which further amended the 2018 RSA. The 20182021 RSA is a secured borrowing that is collateralized by the Company's eligible receivables, for which the Company is the servicing agent. The Company's receivable originator subsidiaries sell, on a revolving basis, undivided interests in all of their eligible accounts receivable to Swift Receivables Company II, LLC ("SRCII") who in turn sells a variable percentage ownership in those receivables to the various purchasers. The Company's eligible receivables are included in "Trade receivables, net of allowance for doubtful accounts" in the consolidated balance sheets. As of December 31, 2019,2021, the Company's eligible receivables generally have high credit quality, as determined by the obligor's corporate credit rating.
The 20182021 RSA is subject to fees, various affirmative and negative covenants, representations and warranties, and default and termination provisions customary for facilities of this type. The Company was in compliance with these covenants as of December 31, 2019.2021. Collections on the underlying receivables by the Company are held for the benefit of SRCII and the various purchasers and are unavailable to satisfy claims of the Company and its subsidiaries.

The following table summarizes the key terms of the 2021 RSA and 2018 RSA (dollars in thousands):
2021 RSA2018 RSA
(Dollars in thousands)
EffectiveApril 23, 2021July 11, 2018
Final maturity dateApril 23, 2024July 9, 2021
Borrowing capacity$400,000 $325,000 
Accordion option 1
$100,000 $175,000 
Unused commitment fee rate 2
20 to 40 basis points20 to 40 basis points
Program fees on outstanding balances 3 4
one month LIBOR + 82.5 basis pointsone month LIBOR + 80 to 100 basis points
1The accordion option increases the maximum borrowing capacity, subject to participation by the purchasers.
2The 2021 RSA and 2018 RSA commitment fee rates are based on the percentage of the maximum borrowing capacity utilized.
3Only the rate for the 2018 RSA program fee is subject to the Company's consolidated total net leverage ratio.
4As identified within the 2021 RSA, the lender can trigger an amendment by identifying and deciding upon a replacement index for LIBOR.
Availability under the 2021 RSA and 2018 RSA is calculated as follows:
December 31,
20212020
(In thousands)
Borrowing base, based on eligible receivables$400,000 $302,700 
Less: outstanding borrowings 1
(279,000)(214,000)
Less: outstanding letters of credit(65,300)(67,281)
Availability under accounts receivable securitization facilities$55,700 $21,419 
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

1As of December 31, 2021, outstanding borrowings are included in "Accounts receivable securitization – less current portion" in the consolidated balance sheets and are offset by $0.5 million of deferred loan costs. As of December 31, 2020, outstanding borrowings are included in "Accounts receivable securitization – current portion" in the consolidated balance sheets and are offset by $0.1 million of deferred loan costs. Interest accrued on the aggregate principal balance at a rate of 0.9% and 1.0%, as of December 31, 2021 and 2020, respectively.
The following table summarizes the key terms of the 2018 RSA (dollars in thousands):
Effective
July 11, 2018

Final maturity date
July 9, 2021

Borrowing capacity
$325,000
Accordion option ¹
$175,000
Unused commitment fee rate ²20 to 40 basis points
Program fees on outstanding balances ³one month LIBOR + 80 to 100 basis points

1The accordion option increases the maximum borrowing capacity, subject to participation by the purchasers.
2The 2018 RSA commitment fee rate is based on the percentage of the maximum borrowing capacity utilized.
3The 2018 RSA program fee is based on the Company's consolidated total net leverage ratio. As identified within the 2018 RSA, the lender can trigger an amendment by identifying and deciding upon a replacement index for LIBOR.
Availability under the 2018 RSA is calculated as follows:
 December 31,
 2019 2018
 (In thousands)
Borrowing base, based on eligible receivables$299,100
 $325,000
Less: outstanding borrowings ¹(205,000) (240,000)
Less: outstanding letters of credit(70,841) (70,900)
Availability under accounts receivable securitization facilities$23,259
 $14,100
    
1Outstanding borrowings are included in "Accounts receivable securitization" in the consolidated balance sheets. Interest accrued on the aggregate principal balance at a rate of 2.6% and 3.2%, as of December 31, 2019 and 2018, respectively.
Program fees and unused commitment fees are recorded in "Interest expense" in the consolidated statements of comprehensive income. The Company's accounts receivable securitization incurred program fees of $7.2 million in 2019, $8.1$3.1 million in 2018, and $2.22021, $3.5 million in 2017.2020, and $7.2 million in 2019.
Refer to Note 23 for information regarding the fair value of the 2021 RSA and 2018 RSA.
Note 1615 — Debt and Financing
Other than the Company's accounts receivable securitization as discussed in Note 1514 and its outstanding finance lease obligations as discussed in Note 17,16, the Company's long-term debt consisted of the following:
December 31,
20212020
(In thousands)
2021 Term Loan A-1, due December 3 2022, net 1 2
$199,676 $— 
2021 Term Loan A-2, due September 3, 2024, net 1 2
199,607 — 
2021 Term Loan A-3, due September 3, 2026, net 1 2
798,352 — 
2017 Term Loan, due October 2022, net 1 3
— 298,907 
Prudential Notes, net 1
47,265 — 
Other5,069 — 
Total long-term debt, including current portion1,249,969 298,907 
Less: current portion of long-term debt(212,417)— 
Long-term debt, less current portion$1,037,552 $298,907 
 December 31,
 2019 2018
 (In thousands)
Term Loan, due October 2020, net ¹ ² ³$364,825
 $364,590
Other long-term debt, including current portion
 421
Total long-term debt, including current portion364,825
 365,011
Less: current portion of long-term debt(364,825) (421)
Long-term debt, less current portion$
 $364,590
    
December 31,
20212020
(In thousands)
Total long-term debt, including current portion$1,249,969 $298,907 
2021 Revolver, due September 3, 2026 1 4
260,000 — 
2017 Revolver, due October 2022 1 5
— 210,000 
Long-term debt, including revolving line of credit$1,509,969 $508,907 
1    Refer to Note 23 for information regarding the fair value of debt.

2    The carrying amounts of the 2021 Term Loan A-1, 2021 Term Loan A-2, and 2021 Term Loan A-3 are
net of $0.3 million, $0.4 million, and $1.6 million in deferred loan costs as of December 31, 2021, respectively.
3    Net of $1.1 million in deferred loan costs at December 31, 2020.
 December 31,
 2019 2018
 (In thousands)
Total long-term debt, including current portion$364,825
 $365,011
Revolver, due October 2022 1 4
279,000
 195,000
Long-term debt, including revolving line of credit$643,825
 $560,011
    
4    The Company also had outstanding letters of credit of $64.0 million under the 2021 Revolver, primarily related to workers' compensation and self-insurance liabilities, at December 31, 2021.
1Refer to Note 23 for information regarding the fair value of debt.

5    The Company also had outstanding letters of credit of $29.3 million under the 2017 Revolver, primarily related to workers' compensation and self-insurance liabilities, at December 31, 2020.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

2Net of $0.2 million and $0.4 million deferred loan costs at December 31, 2019 and 2018, respectively.
3The Term Loan is due October 2, 2020. The Company intends to refinance prior to maturity.
4
The Company also had outstanding letters of credit under the Revolver, primarily related to workers' compensation and self-insurance liabilities of $28.3 million and $36.6 million at December 31, 2019 and 2018, respectively.
Credit Agreements
20172021 Debt Agreement — On September 29, 2017, Knight-Swift3, 2021, the Company entered into the $1.2$2.3 billion 2017 2021 Debt Agreement (which is an(an unsecured credit facility), with a group of banks, replacing Swift's previous secured 2015the 2017 Debt Agreement and Knight's unsecured 2013 Debt Agreement.  The 2017 Debt Agreement includes an $800.0 million Revolver maturing October 2022, $85.0 million of which was drawn at closing, and a $400.0 millionthe July 2021 Term Loan maturing October 2020. There are 0 scheduled principal payments on the Term Loan until its maturity.
(described below). The following table presents the key terms of the 20172021 Debt Agreement:
2021 Term Loan A-12021 Term Loan A-22021 Term Loan A-3
2021 Revolver 2
2021 Debt Agreement Terms(Dollars in thousands)
Maximum borrowing capacity$200,000$200,000$800,000$1,100,000
Final maturity dateDecember 3, 2022September 3, 2024September 3, 2026September 3, 2026
Interest rate margin reference rateBSBYBSBYBSBYBSBY
Interest rate minimum margin 1
0.75%0.75%0.88%0.88%
Interest rate maximum margin 1
1.38%1.38%1.50%1.50%
Minimum principal payment — amount$—$—$10,000$—
Minimum principal payment — frequencyOnceOnceQuarterlyOnce
Minimum principal payment — commencement dateDecember 3, 2022September 3, 2024September 30, 2024September 3, 2026
  Term Loan Revolver ³
2017 Debt Agreement Terms: (Dollars in thousands)
Maximum borrowing capacity $400,000 $800,000
Final maturity date 
October 2, 2020
 
October 3, 2022
Interest rate minimum margin ¹ LIBOR LIBOR
Interest rate minimum margin ² 0.88% 0.88%
Interest rate maximum margin ² 1.50% 1.50%
Minimum principal payment — amount $— $—
Minimum principal payment — frequency Once Once
Minimum principal payment — commencement date 
October 2, 2020
 
October 3, 2022
1As is currently customary in financing transactions, discussions of a replacement index for LIBOR will be included as the Company negotiates any refinancing of the Term Loan and associated 2017 Debt Agreement.
2
The interest rate margin for the Term Loan and Revolver is based on the Company's consolidated leverage ratio. As of December 31, 2019, interest accrued at 2.792% on the Term Loan and 2.770% on the Revolver. As of December 31, 2018, interested accrued at 3.522% on the Term Loan and 3.448% on the Revolver.
3
The commitment fee for the unused portion of the Revolver is based on the Company's consolidated leverage ratio, and ranges from 0.07% to 0.20%. As of December 31, 2019 and 2018, commitment fees on the unused portion of the Revolver accrued at0.100% and outstanding letter of credit fees accrued at 1.000%The interest rate margin for the 2021 Term Loan and 2021 Revolver is based on the Company's consolidated leverage ratio. As of December 31, 2021, interest accrued at 1.022% on the 2021 Term Loans and 1.064% on the 2021 Revolver.
2The commitment fee for the unused portion of the 2021 Revolver is based on the Company's consolidated leverage ratio, and ranges from 0.07% to 0.20%. As of December 31, 2021, commitment fees on the unused portion of the 2021 Revolver accrued at 0.100% and outstanding letter of credit fees accrued at 1.000%.
Pursuant to the 20172021 Debt Agreement, the 2021 Revolver and the 2021 Term LoanLoans contain certain financial covenants with respect to a maximum net leverage ratio and a minimum consolidated interest coverage ratio. The 20172021 Debt Agreement provides flexibility regarding the use of proceeds from asset sales, payment of dividends, stock repurchases, and equipment financing. In addition to the financial covenants, the 20172021 Debt Agreement includes usual and customary events of default for a facility of this nature and provides that, upon the occurrence and continuation of an event of default, payment of all amounts payable under the 20172021 Debt Agreement may be accelerated, and the lenders' commitments may be terminated. The 20172021 Debt Agreement contains certain usual and customary restrictions and covenants relating to, among other things, dividends (which would beare restricted only if a default or event of default had occurredoccurs and wasis continuing or would result therefrom), liens, affiliate transactions, and other indebtedness. As of December 31, 2019 and 2018,2021, the Company was in compliance with the debt covenants thatunder the 20172021 Debt Agreement was subject to.Agreement.
Borrowings under the 20172021 Debt Agreement, are guaranteedmade by Knight-Swift Transportation Holdings Inc., and are guaranteed by certain of the Company's material domestic subsidiaries (other than its captive insurance subsidiaries, driving academy subsidiary, and bankruptcy-remote special purpose subsidiary).
See Note 23July 2021 Term Loan — On July 6, 2021, Knight-Swift entered into a $1.2 billion term loan with Bank of America, N.A (the "July 2021 Term Loan"). The July 2021 Term Loan was incremental to, and was separate from, the 2017 Debt Agreement. The July 2021 Term Loan was fully funded on July 6, 2021 and there were no scheduled principal payments prior to its scheduled maturity in October 2022. The interest rate applicable to the July 2021 Term Loan was subject to a leverage-based grid and equaled the BSBY rate plus 1.000% at closing. The July 2021 Term Loan was paid off and terminated using the proceeds of the 2021 Term Loans, discussed above.
The July 2021 Term Loan contained similar terms to the 2017 Debt Agreement, including the financial covenants, usual and customary events of default for fair value disclosures regarding the Company's debt instruments.

a facility of this nature, and certain usual and customary restrictions and covenants.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

ACT Credit Agreement
Prudential Notes —Through the acquisition of ACT, the Company assumed the Second Amended and Restated Note Purchase and Private Shelf Agreement with Prudential Capital Group ("2014 Prudential Notes"). On September 3, 2021, ACT entered into the 2021 Prudential Notes, replacing the 2014 Prudential Notes. The 2021 Prudential Notes have interest rates ranging from 4.05% to 4.40% and various maturity dates ranging from October 2023 through January 2028.
The 2021 Prudential Notes allow ACT to borrow up to $125.0 million, less amounts then currently outstanding with Prudential Capital Group, provided that certain financial ratios are maintained. The 2021 Prudential Notes are unsecured and contain usual and customary restrictions on, among other things, the ability to make certain payments to stockholders, similar to the provisions of the Company's 2021 Debt Agreement. As of December 31, 2021, ACT had $77.6 million available under the agreement.
See Note 23 for fair value disclosures regarding the Company's debt instruments.
Note 1716 — Leases
Lessee Disclosures for Lease Accounting under ASC Topic 842
Lease Cost — The components of the Company's lease cost were as follows:
20212020
(in thousands)
Operating lease cost:
Operating lease costs$46,795 $80,456 
Short-term lease cost ¹8,426 6,544 
Sublease income(60)(360)
Rental expense55,161 86,640 
Finance lease cost:
Amortization of property and equipment37,659 16,638 
Interest expense5,232 2,896 
Total finance lease cost42,891 19,534 
Total operating and finance lease costs$98,052 $106,174 
 2019
 (in thousands)
Operating lease cost: 
Operating lease costs$120,201
Short-term lease cost ¹2,897
Sublease income(360)
Rental expense122,738
  
Finance lease cost: 
Amortization of property and equipment19,878
Interest expense3,048
Total finance lease cost22,926
  
Total operating and finance lease costs$145,664
  
1    Short-term lease cost includes leases with a term of twelve months or less, as well as month-to-month leases and variable lease costs.
1Short-term lease cost includes leases with a term of twelve months or less, as well as month-to-month leases and variable lease costs.
Lease Liability Calculation Assumptions — The assumptions underlying the calculation of the Company's right-of-use assets and corresponding lease liabilities are disclosed below.
 December 31, 2019
 Operating Finance
Revenue equipment leases   
Weighted average remaining lease term2.4 years
 2.3 years
Weighted average discount rate2.6% 3.3%
    
Real estate and other leases   
Weighted average remaining lease term13.3 years
 
Weighted average discount rate4.3% %
    


December 31,
20212020
OperatingFinanceOperatingFinance
Revenue equipment leases
Weighted average remaining lease term1.6 years4.0 years2.0 years3.6 years
Weighted average discount rate2.3 %1.9 %2.4 %2.4 %
Real estate and other leases
Weighted average remaining lease term12.6 years— 10.6 years— 
Weighted average discount rate3.0 %— %3.7 %— %
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Maturity Analysis of Lease Liabilities (as Lessee) Future minimum lease payments for all noncancelable leases were:
 December 31, 2019
 Operating Finance
 (In thousands)
2020$83,919
 $14,963
202144,482
 30,711
202226,755
 18,508
202313,764
 1,342
20244,046
 9,553
Thereafter22,309
 
Future minimum lease payments195,275
 75,077
Less: amounts representing interest(19,014) (4,868)
Present value of minimum lease payments176,261
 70,209
Less: current portion(80,101) (12,826)
Lease liabilities – less current portion$96,160
 $57,383
    

December 31, 2021
OperatingFinance
(In thousands)
2022$38,871 $54,741 
202327,124 49,275 
202415,084 91,115 
202511,037 70,543 
20268,793 9,839 
Thereafter71,007 45,185 
Future minimum lease payments171,916 320,698 
Less: amounts representing interest(28,980)(14,526)
Present value of minimum lease payments142,936 306,172 
Less: current portion(35,322)(50,006)
Lease liabilities – less current portion$107,614 $256,166 
Supplemental Cash Flow Lease Disclosures — The following table sets forth cash paid for amounts included in the measurement of lease liabilities:
 2019
 (in thousands)
Operating cash flows for operating leases$121,737
Operating cash flows for finance leases3,048
Financing cash flows for finance leases115,642
  

20212020
(in thousands)
Operating cash flows for operating leases$48,171 $83,675 
Operating cash flows for finance leases5,232 2,896 
Financing cash flows for finance leases108,186 83,910 
Refer to Note 24 for information regarding the leasing transactions between the Company and its related parties.
Lessor Disclosures for Lease Accounting under ASC Topic 842
The Company's wholly-owned financing subsidiaries leaseCompany leases revenue equipment to the Company's independent contractors and other third parties under operating leases, which generally have terms between three and four years, and include renewal and purchase options. These leases also include variable charges associated with miles driven in excess of the stipulated allowable miles in the contract, which are accounted for separately and presented in the table below. Lease classification is determined based on minimum rental receipts per the agreement, including residual value guarantees, when applicable, as well as receivables due to the Company upon default or cross-default. When independent contractors default on their leases, the Company typically re-leases the equipment to other independent contractors. As such, future lease receipts reflect original leases and re-leases.
The Company's leases to third parties, some of which are subleases, are generally short-term, and may include renewal options.
The owned assets underlying the Company's leases as lessor primarily consist of revenue equipment. As of December 31, 2019,2021 and 2020, the gross carrying value of such revenue equipment underlying these leases was $91.6$103.2 million and $103.1 million, respectively, and accumulated depreciation was $18.6$40.0 million. and $29.7 million, respectively. Depreciation is calculated on a straight-line basis down to the residual value, as applicable, over the estimated useful life of the equipment. Depreciation expense for these assets was $16.4$20.6 million for 2019.2021 and 2020.
Additionally, the Company periodically leases or subleases out real estate for use by third parties, some of which are subleases.parties. These leases have varying terms, and may include renewal options.
Management’s significant assumptions and judgments include the determination of the amount the Company expects to derive from the underlying asset at the end of the lease term, as well as whether a contract contains a lease.

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Lease Revenue and Rental Income — The components of the Company's lease revenue are included in "Revenue, excluding truckingtruckload and LTL fuel surcharge" and the Company's rental income is included in "Other income, net" in the consolidated statements of comprehensive income. These amounts are disclosed in the table below.
20212020
(in thousands)
Operating lease revenue$95,934 $45,698 
Variable lease revenue1,353 1,691 
Total lease revenue 1
$97,287 $47,389 
Rental income 2
$10,375 $10,365 
 2019
 (in thousands)
Operating lease revenue$46,858
Variable lease revenue2,169
Total lease revenue ¹$49,027
  
Rental income ²$9,982
  
1    Represents operating revenue earned by the Company for leasing equipment to independent contractors and other third-parties.
1Primarily represents operating revenue earned by the Company's financing subsidiaries for leasing equipment to third-party independent contractors.
2Represents non-operating income earned from leasing real estate to third parties.
2    Represents non-operating income earned from leasing real estate to third parties.
Maturity Analysis of Future Lease Revenues (as Lessor) Future minimum lease revenues for all noncancelable leases were:
 December 31, 2019
 (In thousands)
2020$46,480
202133,607
202220,989
20238,386
2024988
Thereafter842
Future minimum lease revenues$111,292
  

December 31, 2021
(In thousands)
2022$38,262 
202326,211 
202412,492 
20255,215 
20261,926 
Thereafter3,618 
Future minimum lease revenues$87,724 
Refer to Note 24 for information regarding the leasing transactions between the Company and related parties.
December 31, 2018 (ASC Topic 840 Disclosures)
Note:
Note 17 — Defined Benefit Pension Plan
Through the ACT Acquisition, the Company assumed a defined benefit pension plan covering ACT's drivers, drivers' helpers, warehousemen, warehousemen's helpers, mechanics, and mechanics' helpers. The ASC Topic 840 Comparative Approachplan provides normal retirement benefits based on years of credited service and applicable benefit units as defined by the plan. Provision is also made for adopting ASC Topic 842 requires companies to provide disclosures for all periods that continue to be in accordance with ASC Topic 840. Refer to Note 3 for more information regarding the Company's adoption methodsearly and impact of adoption for ASC Topic 842.defined retirements.
The Company financespension plan was amended such that benefit accrual and plan participation for the plan were effectively frozen as of January 1, 1997, resulting in a portion of its revenue equipment under capital and operating leases and certain terminals under operating leases.curtailment on that date. The net pension liability recognized is as follows:
December 31, 2021
(In thousands)
Projected benefit obligation$71,440 
Less: fair value of plan assets70,467 
Unfunded status$973 
Accrued pension liability recognized 1
$973 
Capital Leases (as Lessee) 1The Company's capital leases are typically structured with balloon payments at the end of the lease term equal to the residual value the Company is contracted to receive from certain equipment manufacturers upon sale or trade back to the manufacturers. If the Company does not receive proceeds of the contracted residual value from the manufacturer, the Company is still obligated to make the balloon payment at the end of the lease term. Certain leases contain renewal or fixed price purchase options. The present value of obligations under capital leasespension liability is included under "Capital lease obligations andin "Other long-term debt – current portion" and "Capital lease obligations – less current portion"liabilities" in the consolidated balance sheets. As of December 31, 2018, the leases were collateralized by revenue equipment with a cost of $154.3 million and accumulated amortization of $34.2 million. Amortization of the equipment under capital leases is included in "Depreciation and amortization of property and equipment"
"Other comprehensive loss" in the Company's consolidated statements of comprehensive income.
Operating Leases (as Lessee) Operating leases generally include tractors, trailers, chassis,income included a $0.6 million loss from pension plan adjustments during 2021. The provisions of the plan do not require compensation levels to be considered in determining the plan’s benefit obligation. As such, the accumulated benefit obligation and facilities. Substantially all lease agreements for revenue equipment have fixed payment terms based onprojected benefit obligation are the passage of time. The tractor lease agreements generally stipulate maximum miles and provide for mileage penalties for excess miles. These leases generally run for a period of three to five years for tractors and five to seven years for trailers.

same.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Other information concerning the defined benefit pension plan is summarized below:
Operating and Capital Leases (as Lessee) As
2021
(In thousands)
Net periodic pension income$1,483 
Benefits paid2,981 
Assumptions
A weighted-average discount rate of 2.53% was used to determine benefit obligations as of December 31, 2018, annual2021.
The following weighted-average assumptions were used to determine net periodic pension cost:
2021
Discount rate2.55 %
Expected long-term rate of return on pension plan assets6.00 %
ACT's assumptions for the expected long-term rate of return on pension plan assets are based on a periodic review of the plan’s asset allocation over a long-term period. Expectations of returns for each asset class are based on comprehensive reviews of historical data and economic/financial market theory. The expected long-term rate of return on pension plan assets was selected from within the reasonable range of rates determined by (1) historical real returns, net of inflation, for the asset classes covered by the investment policy and (2) projections of inflation over the long-term period during which benefits are payable to plan participants.
The defined benefit pension plan weighted-average asset allocations, by asset category, are as follows:
2021
Asset category:
Equity securities30 %
Debt securities68 %
Cash and cash equivalents%
Total100 %
Pension plan assets
The target allocation by asset category, is as follows:
2021
Asset category:
Equity securities30 %
Debt securities70 %
Total100 %
The investment policy includes various guidelines and procedures designed to ensure assets are invested in a manner necessary to meet expected future minimum lease paymentsbenefit payments. The investment guidelines consider a broad range of economic conditions. Central to the policy are target allocation percentages (shown above) by major asset categories. The objectives of the target allocation percentages are to maintain investment portfolios that diversify risk through prudent asset allocation parameters and achieve asset returns that meet or exceed the plan’s actuarial assumptions.
Refer to Note 23 for all noncancelable leases were:additional information regarding fair value measurements of the Company's investments.
103

 Operating Capital
 (In thousands)
2019$123,380
 $61,285
202079,088
 15,843
202142,441
 30,845
202224,693
 18,528
202311,728
 1,347
Thereafter25,403
 9,572
Future minimum lease payments$306,733
 $137,420
Less: amounts representing interest  (7,921)
Present value of minimum lease payments  129,499
Less: current portion  (58,251)
Capital lease obligations – less current portion  $71,248
    


KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
Operating Leases (as Lessor) NOTES TO CONSOLIDATED FINANCIAL STATEMENTS The Company's wholly-owned financing subsidiaries lease revenue equipment CONTINUED
Cash flows
ACT did not contribute to the Company's independent contractors under operating leases. Additionally,pension plan during 2021. ACT is not expecting to recognize any net loss within "Other comprehensive loss" in the Company periodically leases out facilities for use by third-parties. Annual future minimum leaseconsolidated statements of comprehensive income during 2022.
The following benefit payments receivable under operating leases forare expected to be paid in each of the periods noted below were:fiscal years as follows:
 (In thousands)
2019$54,080
202037,694
202122,991
20228,343
202313
Thereafter
Future minimum lease payments receivable$123,121
  

December 31, 2021
(In thousands)
20223,594 
20233,708 
20243,854 
20253,956 
20264,043 
2027 through 203020,543 
Total$39,698 
Lease classification is determined based on minimum rental payments per the agreement, including residual value guarantees, when applicable, as well as receivables due to the Company upon default or cross-default. When independent-contractors default on their leases, the Company typically re-leases the equipment to other independent-contractors. As such, future minimum lease payments reflect original leases and re-leases.
Note 18 — Purchase Commitments
As of December 31, 2019,2021, the Company had outstanding commitments to acquire revenue equipment of $571.8$858.0 million in 2020 ($400.62022 ($585.8 million of which were tractor commitments), $58.6 million in 2023 ($50.4 million of which were tractor commitments), and NaNnone thereafter. These purchases may be financed through any combination of operating leases, finance leases, debt, proceeds from sales of existing equipment, and cash flows from operations.
As of December 31, 2019,2021, the Company had outstanding purchase commitments to acquire facilities and non-revenue equipment of $6.2$53.4 million in 2020, $1.02022, $4.5 million in the two-year period 20212023 through 20222024, and $0.2$1.2 million in 2023the two-year period 2025 through 2026, and 2024, and NaNnone thereafter. Factors such as costs and opportunities for future terminal expansions may change the amount of such expenditures.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Note 19 — Contingencies and Legal Proceedings
Accounting Policy
The Company is involved in certain claims and pending litigation primarily arising in the normal course of business. The majority of these claims relate to workers' compensation, auto collision and liability, physical damage, and cargo damage, as well as certain class action litigation in which plaintiffs allege failure to provide meal and rest breaks, unpaid wages, unauthorized deductions, and other items. The Company accrues for the uninsured portion of claims losses and the gross amount of other losses when the likelihood of the loss is probable and the amount of the loss is reasonably estimable. These accruals are based on management's best estimate within a possible range of loss. When there is no amount within the range of loss that appears to be a better estimate than any other amount, then management accrues to the low end of the range. Legal fees are expensed as incurred.
When it is reasonably possible that exposure exists in excess of the related accrual (which could be no accrual), management discloses an estimate of the possible loss or range of loss, unless an estimate cannot be determined (because, among other reasons, (1) the proceedings are in various stages that do not allow for assessment; (2) damages have not been sought; (3) damages are unsupported and/or exaggerated; (4) there is uncertainty as to the outcome of pending appeals; and/or (5) there are significant factual issues to be resolved).
If the likelihood of a loss is remote, the Company does not accrue for the loss. However, if the likelihood of a loss is remote, but it is at least reasonably possible that one or more future confirming events may materially change management's estimate within twelve months from the date of the financial statements, management discloses an estimate of the possible loss or range of loss, unless an estimate cannot be determined.
Legal Proceedings
Information is provided below regarding the nature, status, and contingent loss amounts, if any, associated with the Company's pending legal matters. There are inherent uncertainties in these legal matters, some of which are beyond management's control, making the ultimate outcomes difficult to predict. Moreover, management's views and estimates related to these matters may change in the future, as new events and circumstances arise and the matters continue to develop.
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The Company has made accruals with respect to its legal matters where appropriate, which are included in "Accrued liabilities" in the consolidated balance sheets. The Company has recorded an aggregate accrual of approximately $121.3$18.1 million and $90.8$20.2 million relating to the Company's outstanding legal proceedings as of December 31, 20192021 and 2018,2020, respectively.
Based on management's present knowledge of the facts and (in certain cases) advice of outside counsel, management does not believe that loss contingencies arising from pending matters are likely to have a material adverse effect on the Company's overall financial position, operating results, or cash flows after taking into account any existing accruals. However, actual outcomes could be material to the Company's financial position, operating results, or cash flows for any particular period.

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EMPLOYEE COMPENSATION AND PAY PRACTICES MATTERS
Washington Overtime Class ActionsCRST Expedited
The plaintiffs allege one or more of the following, pertaining to Washington state-based driving associates: that Swift 1) failed to pay minimum wage; 2) failed to pay overtime; 3) failed to pay all wages due at established pay periods; 4) failed to provide proper meal and rest periods; 5) failed to provide accurate wage statements; and 6) unlawfully deducted from employee wages. The plaintiffs seek unpaid wages, exemplary damages, interest, other costs, and attorneys’ fees.
Plaintiff(s)Defendant(s)Date institutedCourt or agency currently pending in
Troy Slack ¹Swift Transportation Company of Arizona, LLC and Swift Transportation Corporation
September 9, 2011
United States District Court for the Western District of Washington
Julie Hedglin ¹Swift Transportation Company of Arizona, LLC and Swift Transportation Corporation
January 14, 2016
United States District Court for the Western District of Washington
Recent Developments and Current Status
In February 2019, the court granted final approval of the Slack settlement. Additionally, in July 2019, the court granted final approval of the settlement in the Hedglin matter. Both settlements have been paid as of December 31, 2019.
CRST Expedited
Plaintiffplaintiff alleges tortious interference with contract and unjust enrichment related to non-competition agreements entered into with certain of its drivers.
Plaintiff(s)Defendant(s)Date institutedCourt or agency currently pending in
CRST Expedited, Inc.Swift Transportation Co. of Arizona LLC.
March 20, 2017
United States District Court for the Northern District of Iowa
Recent Developments and Current Status
In July 2019, a jury issued an adverse verdict in this lawsuit. In December 2019,The court issued a decision granting in part and denying in part certain motions related to the jury’s verdict. Both parties have appealed the court’s decision. On August 6, 2021 a three-judge panel of the 8th Circuit Court reducedof Appeals issued an opinion reversing the jury verdict. The Company is reviewing all options including if necessary, an appeal.trial court’s decision. On October 4, 2021 the 8th Circuit Court of Appeals denied a petition for rehearing. The likelihood that a loss has been incurred is no longer probable, and estimable, and the lossaccrual for this lawsuit has accordingly been accruedreversed as of December 31, 2019.2021.
California Wage, Meal, and Rest Class Actions
The plaintiffs generally allege one or more of the following: that the Company 1) failed to pay the California minimum wage; 2) failed to provide proper meal and rest periods; 3) failed to timely pay wages upon separation from employment; 4) failed to pay for all hours worked; 5) failed to pay overtime; 6) failed to properly reimburse work-related expenses; and 7) failed to provide accurate wage statements.
Plaintiff(s)Defendant(s)Date institutedCourt or agency currently pending in
John Burnell ¹1
Swift Transportation Co., Inc
March 22, 2010
United States District Court for the Central District of California
James R. Rudsell 1
Swift Transportation Co. of Arizona, LLC and Swift Transportation Company
April 5, 2012
United States District Court for the Central District of California
Recent Developments and Current Status
In April 2019, the parties reached settlement of this matter. In January 2020, the Courtcourt granted final approval of the settlement. Two objectors appealed the court's decision granting final approval of the settlement. The likelihood that a loss has been incurred is probable and estimable, and the loss has accordingly been accrued as of December 31, 2019.2021.
Arizona Minimum Wage Class Action
The plaintiffs generally allege one or more of the following: 1) failure to minimum wage for the first day of orientation; 2) failure to pay minimum wage for time spent studying; 3) failure to pay minimum wage for 16 hours per day; and 4) failure to pay minimum wage for the first eight hours of sleeper berth time.
Plaintiff(s)Defendant(s)Date institutedCourt or agency currently pending in
Pamela Julian ¹Swift Transportation Co., Inc. and Swift Transportation Co. of Arizona LLC
December 29, 2015
United States District Court for the District of Arizona
Recent Developments and Current Status
In December 2019, the court awarded damages for failure to pay minimum wage for 16 hours per day. The likelihood that a loss has been incurred is probable and estimable, and the loss has accordingly been accrued as of December 31, 2019.
1Individually and on behalf of all others similarly situated.

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INDEPENDENT CONTRACTOR MATTERS
Ninth Circuit Independent ContractorsContractor Misclassification Class Action
The putative class alleges that Swift misclassified independent contractors as independent contractors, instead of employees, in violation of the FLSA and various state laws. The lawsuit also raises certain related issues with respect to the lease agreements that certain independent contractors have entered into with Interstate Equipment Leasing, LLC. The putative class seeks unpaid wages, liquidated damages, interest, other costs, and attorneys' fees.
Plaintiff(s)Defendant(s)Date institutedCourt or agency currently pending in
Joseph Sheer, Virginia Van Dusen, Jose Motolinia, Vickii Schwalm, Peter Wood ¹1
Swift Transportation Co., Inc., Interstate Equipment Leasing, Inc., Jerry Moyes, and Chad Killebrew
December 22, 2009
Unites States District Court of Arizona and Ninth Circuit Court of Appeals
Recent Developments and Current Status
In January 2020, the court granted final approval of the settlement in this matter. Based onIn March 2020, the above,Company paid the likelihood that a loss has been incurred is probable and estimable, andsettlement amount approved by the loss has accordingly been accrued ascourt. As of December 31, 2019.2021, the Company has accrued for anticipated costs associated with finalizing this matter.
1    Individually and on behalf of all others similarly situated.
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Other Environmental
The Company's tractors and trailers are involved in motor vehicle accidents, experience damage, mechanical failures and cargo issues as an incidental part of the normal ordinary course of operations. From time to time, these matters result in the discharge of diesel fuel, motor oil, or other hazardous materials into the environment. Depending on local regulations and who is determined to be at fault, the Company is sometimes responsible for the clean-up costs associated with these discharges. As of December 31, 2021, the Company's estimate for its total legal liability for all such clean-up and remediation costs was approximately $1.1 million in the aggregate for all current and prior year claims.
1Individually and on behalf of all others similarly situated.
Note 20 — Share Repurchase Plans
On June 1, 2018, the Board approved the repurchase of up to $250.0 million of the Company's outstanding common stock (the "2018 Knight-Swift Share Repurchase Plan"). With the adoption of the 2018 Knight-Swift Share Repurchase Plan, the Company terminated the previous share repurchase plan (the "Swift Share Repurchase Plan"). This Swift Share Repurchase Plan was authorized in February 2016, by Swift's board of directors for the repurchase of up to $150.0 million of Swift common stock. When terminated, the Swift Share Repurchase Plan had approximately $62.9 million in remaining authorized purchases.
On May 31, 2019, the Company announced that the Board approved the repurchase of up to $250.0 million worth of the Company's outstanding common stock (the "2019 Knight-Swift Share Repurchase Plan"). With the adoption of the 2019 Knight-Swift Share Repurchase Plan, the Company terminated the 2018 Knight-Swift Share Repurchase Plan.previous share repurchase plan. There was approximately $0.2 million of authorized purchases remaining under the 2018previous share repurchase plan upon termination.
On November 30, 2020, the Company announced that the Board approved the repurchase of up to $250.0 million worth of the Company's outstanding common stock (the "2020 Knight-Swift Share Repurchase Plan"). With the adoption of the 2020 Knight-Swift Share Repurchase Plan, the Company terminated the 2019 Knight-Swift Share Repurchase Plan. There was approximately $54.1 million of authorized purchases remaining under the 2019 Knight-Swift Share Repurchase Plan upon termination.

The following table presents the Company's repurchases of its common stock under the respective share repurchase plans, excluding advisory fees:
Share Repurchase Plan20212020
Board Approval DateAuthorized AmountSharesAmountSharesAmount
(in thousands)
May 30, 2019$250,000— — 4,841 179,585 
November 24, 2020 1
$250,0001,377 57,175 — — 
1,377 $57,175 4,841 $179,585 
1    $192.8 million and $250.0 million remained available under the 2020 Knight-Swift Share Repurchase Plan as of December 31, 2021 and December 31, 2020, respectively.
Subsequent to December 31, 2021, the Company repurchased 0.7 million shares for $36.9 million under the 2020 Knight-Swift Share Repurchase Plan, leaving $155.9 million available as of February 22, 2022.
Share Repurchase Plan 2019 2018
Board Approval Date Authorized Amount Shares Amount Shares Amount
  (in thousands)
June 1, 2018 ¹ $250,000 2,315
 $70,500
 5,892
 $179,318
May 30, 2019 ² $250,000 559
 16,392
 
 
    2,874
 $86,892
 5,892
 $179,318
           
1As of December 31, 2018, $70.7 million remained available under the 2018 Knight-Swift Share Repurchase Plan.
2As of December 31, 2019, $233.6 million remained available under the 2019 Knight-Swift Share Repurchase Plan.
Refer to Note 24 for a discussion of share repurchase transactions conducted with related parties.


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Note 21 — Stock-based Compensation
2017 Merger Impact — Refer to Note 5 for a summary of the 2017 Merger transaction.
Accounting PerspectivePursuant to the Merger Agreement, the following stock transactions occurred on September 8, 2017 (the "Merger Date"):
(1)each outstanding Swift stock option fully vested as a result of the 2017 Merger, was converted into a stock option to acquire the Company's shares using a 0.72-for-one share consolidation ratio and adjusting the exercise price using the same consolidation ratio;
(2)each outstanding unvested Swift restricted stock award (except for the awards granted in May 2017 that excluded acceleration of vesting related to mergers within the award notices) fully vested as a result of the 2017 Merger, and was converted into the Company's Class A common stock, using the 0.72-for-one share consolidation ratio;
(3)each outstanding unvested Swift restricted stock unit (except for the awards granted in May 2017 that excluded acceleration of vesting related to mergers within the award notices) fully vested as a result of the 2017 Merger, and was converted into the Company's Class A common stock, using the 0.72-for-one share consolidation ratio; and
(4)each outstanding unvested Swift performance share unit (except for one director) fully vested as a result of the 2017 Merger, and was converted into the Company's Class A common stock, using the 0.72-for-one consolidation ratio.
Except for the conversion of stock options, unvested restricted stock awards, unvested restricted stock units, and unvested performance units discussed herein, the material terms of the awards remained unchanged. Prior to the closing of the 2017 Merger, Swift had various unvested equity awards outstanding, of which the vesting was accelerated as of the Merger Date (with the exceptions noted above).
In accordance with authoritative guidance on accounting for stock-based compensation, the Company revalued the awards upon the 2017 Merger closing and allocated the revised fair value between purchase consideration and continuing compensation expense, based on the ratio of service performed through the Merger Date over the total service period of the awards. The total value of Swift awards earned as of the Merger Date included as purchase consideration was $13.1 million. The revised fair value allocated to post-merger services resulted in incremental expense, which is recognized over the remaining service period of the awards. The total value of Swift awards not earned as of the Merger Date was $6.3 million, which is being expensed over the remaining future vesting period. Refer to Note 5 to the consolidated financial statements for further information regarding the 2017 Merger.
Legal PerspectivePursuant to the Merger Agreement, the following stock transactions occurred on the Merger Date:
(1)each outstanding vested and unvested Knight stock option was assumed by the Company and automatically converted into a stock option to acquire an equal number of Company shares;
(2)each outstanding vested and unvested Knight restricted stock unit was assumed by the Company and automatically converted into a restricted stock unit award of the Company; and
(3)each outstanding vested and unvested Knight performance unit was assumed by the Company and automatically converted into a performance unit award of the Company.
Except for the conversion of stock options, restricted stock awards, restricted stock unit awards, and performance unit awards discussed herein, the material terms of the awards remained unchanged. Certain of the Knight performance unit awards vested upon the consummation of the 2017 Merger, as described below.

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Compensatory Stock Plans
Before the 2017 Merger, Knight and Swift granted stock-based awards under their respective stock-based compensation plans, discussed below.
2014 Stock PlanCurrently, the 2014 Stock Plan, as amended and restated, is the Company’s only compensatory stock-based incentive plan. The previous 2014 stock plan replaced Swift's 2007 Omnibus Incentive Plan when it was adopted by Swift's board of directors in March 2014 and then approved by the Swift stockholders in May 2014. The previous 2014 stock plan was amended and restated to rename the plan and for other administrative changes relating to the 2017 Merger. The 2014 Stock Plan was again amended and restated in 2020 to increase the number of shares of common stock available for issuance and extended the term of the 2014 Stock Plan, as well as to amend certain provisions to comply with best practices. Other terms of the 2014 Stock Plan, as amended and restated, remain substantially the same as the previous 2014 stock plan and first amended and restated stock plan. The 2014 Stock Plan, as amended and restated, permits the payment of cash incentive compensation and authorizes the granting of stock options, stock appreciation rights, restricted stock and restricted stock units, performance shares and performance units, cash-based awards, and stock-based awards to the Company's employees and non-employee directors. As of December 31, 2019,2021, the aggregate number of shares remaining available under the 2014 Stock Plan was approximately 4.7 million.
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Legacy PlansIn connection with the 2017 Merger, the registered securities under the Knight Amended and Restated 2003 Stock Option Plan, the Knight 2012 Equity Compensation Plan, the Knight Amended and Restated 2015 Omnibus Incentive Plan, and the Swift 2007 Omnibus Incentive Plan (collectively, the "Legacy Plans") were deregistered. As such, no future awards may be granted under these Legacy Plans. Outstanding awards granted under the Legacy Plans were assumed by the combined companyKnight-Swift and continue to be governed by such Legacy Plans until such awards have been exercised, forfeited, canceled, or have otherwise expired or terminated.
See Note 2 regarding the Company's accounting policy for stock-based compensation.
Stock-based Compensation Expense
Stock-based compensation expense, net of forfeitures, which is included in "Salaries, wages, and benefits" in the consolidated statements of comprehensive income is comprised of the following:
 202120202019
(In thousands)
Stock options$232 $567 $1,149 
Restricted stock units18,190 13,496 9,734 
Performance units15,073 5,576 2,492 
Stock-based compensation expense – equity awards$33,495 $19,639 $13,375 
Stock-based compensation (benefit) expense – liability awards 1
(5,364)6,955 2,663 
Total stock-based compensation expense, net of forfeitures$28,131 $26,594 $16,038 
Income tax benefit 2
$8,357 $4,949 $3,344 
 2019 2018 2017
 (In thousands)
Stock options$1,149
 $1,678
 $1,788
Restricted stock units and restricted stock awards9,734
 8,019
 4,004
Performance units2,492
 1,791
 450
Stock-based compensation expense – equity awards$13,375
 $11,488
 $6,242
Stock-based compensation expense – liability awards ¹2,663
 899
 148
Total stock-based compensation expense, net of forfeitures$16,038
 $12,387
 $6,390
Income tax benefit ²$3,344
 $3,097
 $2,415
      

1
Includes awards granted to executive management in November 2019 that, per the original agreement, would ultimately settle in cash upon fulfilling a requisite service period (for restricted stock units) and fulfilling a requisite service period and achieving performance targets (for performance units). During 2021, the Company amended the agreements for outstanding awards to ultimately settle in shares after each requisite service period.
1Includes awards granted to executive management in November of 2019, 2018, and 2017 that ultimately settle in cash upon fulfilling a requisite service period (for restricted stock units) and fulfilling a requisite service period and achieving performance targets (for performance units).
2The income tax benefit is calculated by applying the effective tax rate to stock-based compensation expense for equity awards, as the expense associated with liability awards is not tax deductible.

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Table of Contents2The income tax benefit is calculated by applying the statutory tax rate to stock-based compensation expense for equity awards, as the expense associated with liability awards is not tax deductible.Glossary of Terms

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Unrecognized Stock-based Compensation Expense
The following table presents the total unrecognized stock-based compensation expense and the expected weighted average period over which these expenses will be recognized:
 December 31, 2019
 Expense Weighted Average Period
 (In thousands) (In years)
Equity awards – Stock options$853
 1.0
Equity awards – Restricted stock units and restricted stock awards28,463
 2.1
Equity awards – Performance units5,644
 2.6
Liability awards – Restricted stock units and performance units5,757
 2.1
Total unrecognized stock-based compensation expense$40,717
 2.2
    

December 31, 2021
ExpenseWeighted Average Period
(In thousands)(In years)
Equity awards – Restricted stock units49,704 2.2
Equity awards – Performance units14,306 2.4
Total unrecognized stock-based compensation expense$64,010 2.3
Stock Award Grants
 202120202019
Restricted stock units562,021 722,499 588,819 
Performance units112,690 146,036 102,776 
Equity awards granted674,711 868,535 691,595 
Liability awards granted 1 2
— — 80,927 
Total stock awards granted674,711 868,535 772,522 
1    Includes 48,556 performance units in 2019.
2    Includes 32,371 restricted stock units in 2019.
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 2019 2018 2017
Stock options
 
 497,421
Restricted stock units and restricted stock awards588,819
 420,014
 266,958
Performance units102,776
 106,785
 44,244
Equity awards granted691,595
 526,799
 808,623
Liability awards granted ¹ ²80,927
 91,268
 77,620
Total stock awards granted772,522
 618,067
 886,243
      
1
Includes 48,556, 54,761, and 46,572 performance units in 2019, 2018, and 2017, respectively.

KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
2
Includes 32,371, 36,507, and 31,048 restricted stock units in 2019, 2018, and 2017, respectively.
Stock Options
Stock options are the contingent right of award holders to purchase shares of the Company's common stock at a stated price for a limited time. The exercise price of options granted equals the fair value of the Company's common stock determined by the closing price of the Company's common stock quoted on the NYSE on the grant date. Most stock options granted by the Company cannot be exercised until at least one year after the grant date and have a five to ten-yearten-year contractual term. Stock options are generally forfeited upon termination of employment for reasons other than death, disability, or retirement.
A summary of 20192021 stock option activity follows:
Stock options outstanding:Shares Under OptionWeighted Average Exercise PriceWeighted Average Remaining Contractual Term
Aggregate Intrinsic Value 1
 (In years)(In thousands)
Stock options outstanding at December 31, 2020302,976 $29.45 1.2$3,748 
Granted— — 
Exercised(207,242)28.59 
Expired(7,419)23.80 
Forfeited(3,308)33.35 
Stock options outstanding at December 31, 202185,007 $31.95 0.6$2,464 
Aggregate number of stock options expected to vest at a future date as of December 31, 2021— $— 0.0$— 
Exercisable at December 31, 202185,007 $31.95 0.6$2,464 
Stock options outstanding:Shares Under Option Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value ¹
     (In years) (In thousands)
Stock options outstanding at December 31, 20181,321,605
 $27.13
 2.6 $2,690
Granted
 
    
Exercised ²(443,288) 23.80
    
Expired(150,399) 32.69
    
Forfeited(27,245) 30.68
    
Stock options outstanding at December 31, 2019700,673
 $27.90
 1.7 $5,563
Aggregate number of stock options expected to vest at a future date as of December 31, 2019 ³271,965
 $30.34
 2.0 $1,496
Exercisable at December 31, 2019425,090
 $26.28
 1.5 $4,064
        

1
1
The aggregate intrinsic value was computed using the closing share price on December 31, 2019 of $35.84 and on December 31, 2018 of $25.07,The aggregate intrinsic value was computed using the closing share price on December 31, 2021 of $60.94 and on December 31, 2020 of $41.82, as applicable.

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2
Includes 1,721 swapped shares which were excluded from the "Common stock issued to employees" activity on the Consolidated Statements of Stockholders' Equity.
3Net of the applied, estimated forfeiture rate.
The fair value of each stock option grant is estimated on the grant date using the Black-Scholes option-valuation model. The following table presents the weighted average assumptions used in the fair value computation:
Stock option fair value assumptions:2017
Dividend yield ¹0.72%
Risk-free rate of return ²1.49%
Expected volatility ³27.95%
Expected term (in years) 4
3.2
Weighted average fair value of stock options granted$6.78

1The dividend yield assumption is based on Knight's historical experience and anticipated future dividend payouts.
2The risk-free interest rate assumption is based on the US Treasury securities at a constant maturity with a maturity period that most closely resembles the expected term of the stock option award.
3Expected volatility of the Company's common stock is determined based on Knight's historical data.
4The expected term of employee stock options represents the weighted-average period the stock options are expected to remain outstanding and was determined based on an analysis of historical exercise behavior.
The following table summarizes stock option exercise information for the years presented:
Stock option exercises2019 2018 2017
 (In thousands, except share data)
Number of stock options exercised443,288
  533,226
  589,020
Intrinsic value of stock options exercised$5,183
  $11,745
  $8,792
Cash received upon exercise of stock options$10,478
  $10,815
  $13,159
Income tax benefit$221
  $1,685
  $1,833

Stock option exercises202120202019
(In thousands, except share data)
Number of stock options exercised207,242 382,254 443,288 
Intrinsic value of stock options exercised$4,120 $4,929 $5,183 
Cash received upon exercise of stock options$5,924 $10,199 $10,478 
Income tax benefit$1,304 $1,029 $221 
The following table is a rollforward of the Company's unvested stock options:
Unvested stock options:Shares  Weighted Average Fair Value
Unvested stock options at December 31, 2018582,341
  $5.69
Granted
  
Vested(278,076)  5.38
Forfeited and canceled(28,682)  5.98
Unvested stock options at December 31, 2019275,583
  $5.97
    

Unvested stock options:SharesWeighted Average Fair Value
Unvested stock options at December 31, 202086,779 $6.78 
Vested(83,707)6.78 
Forfeited and canceled(3,072)6.78 
Unvested stock options at December 31, 2021— $— 
The total fair value of the shares vested during 2021, 2020, and 2019 2018, and 2017 was $1.5$0.6 million,, $2.0 $1.0 million, and $1.7$1.5 million, respectively.

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Restricted Stock Units
A restricted stock unit represents a right to receive a common share of stock when the unit vests. Restricted stock unit recipients do not have voting rights with respect to the shares underlying unvested awards. Employees generally forfeit their units if their employment terminates before the vesting date.date, with the exception of death, disability or retirement.
The following table is a rollforward of unvested restricted stock units, including restricted stock units classified as equity and those classified as liabilities:
Unvested restricted stock units:Number of Awards
Weighted Average Fair Value 1
Unvested restricted stock units at December 31, 20201,723,838 $34.07 
Granted562,021 50.63 
Vested 2
(456,670)32.53 
Forfeited(119,428)39.97 
Unvested restricted stock units at December 31, 20211,709,761 $39.81 
Unvested restricted stock units:Number of Awards Weighted Average Fair Value ¹
Unvested restricted stock units at December 31, 20181,169,974
  $30.14
Granted621,190
 29.32
Vested ²(266,277) 31.46
Forfeited(76,692)  34.03
Unvested restricted stock units at December 31, 20191,448,195
  $29.78
    
1    The fair value of each restricted stock unit is based on the closing market price on the grant date.

2    Includes 170,280 shares withheld for taxes and 18,697 net units settled in cash which were excluded from the "Common stock issued to employees" activity within the consolidated statements of stockholders' equity.
1The fair value of each restricted stock unit is based on the closing market price on the grant date.
2Includes 75,559 shares withheld for taxes and 10,556 units settled in cash which were excluded from the "Common stock issued to employees" activity on the Consolidated Statements of Stockholders' Equity.
Performance Units
The Company issues performance units to selectedselect key employees, that may be earned based on achieving performance targets approved by the compensation committee annually. The initial award is subject to an adjustment determined by the Company's performance achieved over a three-year performance period when compared to the objective performance standards adopted by the compensation committee. Furthermore, the performance units have additional service requirements subsequent to the achievement of the performance targets. Performance units do not earn dividend equivalents.
Performance units granted prior to the 2017 Merger were accelerated on September 8, 2017, the 2017 Merger date, pursuant to the terms of the award agreements. On the 2017 Merger date, awards granted in 2014, 2015, and 2016 were accelerated, but only the performance measurement period for the 2014 award was complete allowing for the final award to be expensed and paid out. The performance period for the 2015 and 2016 awards ended December 31, 2017. The performance criteria were not met based on the performance period results ended December 31, 2017, therefore, no expense was recorded, and no payout was made related to the 2015 or 2016 awards.
The following table is a rollforward of unvested performance units, including performance units classified as equity and those classified as liabilities:
Unvested performance units: Shares  Weighted Average Fair Value
Unvested performance units at December 31, 2020549,730 $39.50 
Granted112,690 $60.55 
Shares earned above target45,409 $37.89 
Vested 1
(136,225)$45.02 
Unvested performance units at December 31, 2021 2
571,604 $44.22 
Unvested performance units: Shares  Weighted Average Fair Value
Unvested performance units at December 31, 2018309,179
 $29.50
Granted151,332
 $37.24
Vested
 $
Forfeited(56,817) $26.59
Unvested performance units at December 31, 2019 ¹403,694
 $35.53
    
1The performance measurement period for performance units granted in 2017 is January 1, 2018 to December 31, 2020 (three full calendar years). The performance measurement period for performance units granted in 2018 is January 1, 2019 to December 31, 2021 (three full calendar years). The performance measurement period for performance units granted in 2019 is January 1, 2020 to December 31, 2022 (three full calendar years). All performance units will vest one month following the expiration of the performance measurement period.

1Includes 63,815 shares withheld for taxes and 39,225 net units settled in cash which were excluded from the "Common stock issued to employees" activity within the consolidated statements of stockholders' equity.

2The performance measurement period for performance units granted in 2018 is January 1, 2019 to December 31, 2021 (three full calendar years). The performance measurement period for performance units granted in 2019 is January 1, 2020 to December 31, 2022 (three full calendar years). The performance measurement period for performance units granted in 2020 is January 1, 2021 to December 31, 2023 (three full calendar years). The performance measurement period for units granted in 2021 is January 1, 2022 to December 31, 2024 (three full calendar years). All performance units will vest one month following the expiration of the performance measurement period.
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The following table presents the weighted average assumptions used in the fair value computation for performance units, including performance units classified as equity and those classified as liabilities:
Performance unit fair value assumptions:202120202019
Dividend yield 1
0.67 %0.78 %0.66 %
Expected volatility 2
36.00 %37.99 %34.88 %
Average peer volatility 2
35.49 %35.62 %27.96 %
Average peer correlation coefficient 3
0.600.590.60
Risk-free interest rate 4
0.92 %0.20 %1.60 %
Expected term (in years) 5
3.13.13.1
Weighted-average fair value of performance units granted$60.55 $42.41 $37.24 
Performance unit fair value assumptions:2019 2018 2017
Dividend yield ¹0.66% 0.81% 0.59%
Expected volatility ²34.88% 32.30% 31.28%
Average peer volatility ²27.96% 28.61% 28.45%
Average peer correlation coefficient ³0.60
 0.58
 0.60
Risk-free interest rate 4
1.60% 2.80% 1.88%
Expected term (in years) 5
3.1
 3.1
 3.1
Weighted-average fair value of performance units granted$37.24
 $34.34
 $40.81
1The dividend yield, used to project stock price to the end of the performance period, is based on the Company's historical experience and future expectation of dividend payouts. Total stockholder return is determined assuming that dividends are reinvested in the issuing entity over the performance period, which is mathematically equivalent to utilizing a 0% dividend yield.
1The dividend yield, used to project stock price to the end of the performance period, is based on the Company's historical experience and future expectation of dividend payouts. Total stockholder return is determined assuming that dividends are reinvested in the issuing entity over the performance period, which is mathematically equivalent to utilizing a 0% dividend yield.
2Management (or peer company) estimated volatility using the Company's (or peer company's) historical share price performance over the remaining performance period as of the grant date.
3The correlation coefficients are used to model the way in which each entity tends to move in relation to each other; the correlation assumptions were developed using the same stock price data as the volatility assumptions.
4The risk-free interest rate assumption is based on US Treasury securities at a constant maturity with a maturity period that most closely resembles the expected term of the performance award.
5Since the Monte Carlo Simulation valuation is an open form model that uses an expected life commensurate with the performance period, the expected life of the performance units was assumed to be the period from the grant date to the end of the performance period.
2Management (or peer company) estimated volatility using the Company's (or peer company's) historical share price performance over the remaining performance period as of the grant date.
3The correlation coefficients are used to model the way in which each entity tends to move in relation to each other; the correlation assumptions were developed using the same stock price data as the volatility assumptions.
4The risk-free interest rate assumption is based on US Treasury securities at a constant maturity with a maturity period that most closely resembles the expected term of the performance award.
5Since the Monte Carlo Simulation valuation is an open form model that uses an expected life commensurate with the performance period, the expected life of the performance units was assumed to be the period from the grant date to the end of the performance period.
Non-compensatory Stock Plan: ESPP
In 2012, Swift's board of directors adopted, and its stockholders approved, the 2012 ESPP. The Company's 2012 ESPP continues to beis administered by the Company, following the 2017 Merger, is intended to qualify under Section 423 of the Internal Revenue Code, and is considered noncompensatory. Pursuant to the 2012 ESPP, the Company is authorized to issue up to 1.4 million shares of its common stock to eligible employees who participate in the plan. Employees are eligible to participate in the 2012 ESPP following at least 90 days of employment with the Company or any of its participating subsidiaries. Under the terms of the 2012 ESPP, eligible employees may elect to purchase common stock through payroll deductions, not to exceed 15% of their gross cash compensation. The purchase price of the common stock is 95% of the common stock's fair market value quoted on the NYSE on the last trading day of each offering period. There are four three-month offering periods corresponding to the calendar quarters. Each eligible employee is restricted to purchasing a maximum of $6,250 of common stock during an offering period, determined by the fair market value of the common stock as of the firstlast day of the offering period, and $25,000 of common stock during a calendar year. Officers or employees who own 5% or more of the total voting power or value of common stock are restricted from participating in the 2012 ESPP.
The 2012 ESPP was amended and restated in January 2018 to be a Knight-Swift plan, thus permitting Knight employees to participate in the plan in addition to Swift employees. The terms and definitions of the amended and restated 2012 ESPP remain substantially the same as the original 2012 ESPP.
The plan was amended effective January 1, 2019 to align with new federal tax legislation that lifted the restriction on contributing to the ESPP if the participant had a hardship withdrawal on the 401(k) plan.
In 2019,2021, the Company issued approximately 78,00063,000 shares under the 2012 ESPP at a weighted average discounted price per share of $29.62.$44.12. As of December 31, 2019,2021, the Company is authorized to issue an additional 1.11.0 million shares under the 2012 ESPP.

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Note 22 — Weighted Average Shares Outstanding
Earnings per share, basic and diluted, as presented in the consolidated statements of comprehensive income, are calculated by dividing net income attributable to Knight-Swift by the respective weighted average common shares outstanding during the period.
The following table reconciles basic weighted average shares outstanding to diluted weighted average shares outstanding:
 202120202019
(In thousands)
Basic weighted average common shares outstanding165,860 169,711 171,541 
Dilutive effect of equity awards1,200 838 601 
Diluted weighted average common shares outstanding167,060 170,549 172,142 
Anti-dilutive shares excluded from earnings per diluted share 1
208 63 603 
1Shares were excluded from the dilutive-effect calculation because the outstanding awards' exercise prices were greater than the average market price of the Company's common stock.
 2019 2018 2017
 (In thousands)
Basic weighted average common shares outstanding171,541
 177,018
 110,657
Dilutive effect of equity awards601
 981
 1,040
Diluted weighted average common shares outstanding172,142
 177,999
 111,697
Anti-dilutive shares excluded from earnings per diluted share ¹603
 47
 98
1Shares were excluded from the dilutive-effect calculation because the outstanding awards' exercise prices were greater than the average market price of the Company's common stock.

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Note 23 — Fair Value Measurement
ASC Topic 820, Fair Value Measurements and Disclosures, requires that the Company disclose estimated fair values for its financial instruments. The estimated fair value of a financial instrument is the amount 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 in the principal or most advantageous market for the asset or liability. Fair value estimates are made at a specific point in time and are based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company's entire holdings of a particular financial instrument. Changes in assumptions could significantly affect these estimates. Because the fair value is estimated as of December 31, 20192021 and 2018,2020, the amounts that will actually be realized or paid at settlement or maturity of the instruments in the future could be significantly different.
The estimated fair values of the Company's financial instruments represent management's best estimates of the amounts that would be received to sell those assets or that would be paid to transfer those liabilities in an orderly transaction between market participants at that date. The estimated fair value measurements maximize the use of observable inputs. However, in situations where there is little, if any, market activity for the asset or liability at the measurement date, the estimated fair value measurement reflects the Company'smanagement's own judgments about the assumptions that market participants would use in pricing the asset or liability. These judgments are developed by the Company based on the best information available under the circumstances.
The following summary presents a description of the methods and assumptions used to estimate the fair value of each class of financial instrument.
Restricted Investments, Held-to-Maturity — The estimated fair value of the Company's restricted investments is based on quoted prices in active markets that are readily and regularly obtainable. See Note 65 for additional investments disclosures regarding restricted investments, held-to-maturity.
Transportation Resource PartnersConvertible NotesThe estimated fair value of the Company's convertible note is based on probability weighted discounted cash flow analysis of the corresponding pay-off/redemption.
Equity Method Investments — The estimated fair value of the Company's equity method investments with Transportation Resource Partners are privately negotiated equity investments. The carrying amount of these investments approximates the fair value.
Equity Securities — The estimated fair value of the Company's investments in equity securities is based on quoted prices in active markets that are readily and regularly obtainable.
Pension Plan Assets — The estimated fair value of ACT's pension plan assets are based on quoted prices in active markets that are readily and regularly obtainable.
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Debt Instruments and Leases — For notes payable under the 2021 Revolver, the 2021 Term Loans, the 2021 Prudential Notes, the 2017 Revolver, and the 2017 Term Loan, fair value approximates the carrying value due to the variable interest rate. The carrying valuevalues of the 2021 RSA and 2018 RSA approximatesapproximate fair value, as the underlying receivables are short-term in nature and only eligible receivables (such as those with high credit ratings) are qualified to secure the borrowed amounts. For finance and operating leases,lease liabilities, the carrying value approximates the fair value, as the Company's finance and operating leaseslease liabilities are structured to amortize in a manner similar to the depreciation of the underlying assets.
Contingent Consideration —The estimated fair value of the Company's contingent consideration owed to sellers is calculated using applicable models and inputs for each acquired entity.
Other — Cash and cash equivalents, restricted cash, net accounts receivable, income tax refund receivable, and accounts payable represent financial instruments for which the carrying amount approximates fair value, as they are short-term in nature. These instruments are accordingly excluded from the disclosures below. All remaining balance sheet amounts excluded from the below are not considered financial instruments, subject to this disclosure.
Fair Value Hierarchy — ASC Topic 820 establishes a framework for measuring fair value in accordance with GAAP and expands financial statement disclosure requirements for fair value measurements. ASC Topic 820 further specifies a hierarchy of valuation techniques, which is based on whether the inputs into the valuation technique are observable or unobservable. The hierarchy follows:
Level 1 — Valuation techniques in which all significant inputs are quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.
Level 2 — Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices from markets that are not active for assets or liabilities that are identical or similar to the assets or liabilities being measured. Also, model-

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derivedValuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices from markets that are not active for assets or liabilities that are identical or similar to the assets or liabilities being measured. Also, model-derived valuations in which all significant inputs and significant value drivers are observable in active markets are Level 2 valuation techniques.
Level 3 Valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are valuation technique inputs that reflect the Company's own assumptions about the assumptions that market participants would use in pricing an asset or liability.
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The following table presents the carrying amounts and estimated fair values of the Company's major categories of financial assets and liabilities:
 December 31, 2021December 31, 2020
Consolidated Balance Sheets CaptionCarrying
Value
Estimated
Fair Value
Carrying
Value
Estimated
Fair Value
(In thousands)
Financial Assets:
Restricted investments, held-to-maturity 1
Restricted investments, held-to-maturity, amortized cost$5,866 $5,859 $9,001 $8,995 
Equity method investmentsOther long-term assets75,769 75,769 77,562 77,562 
Investments in equity securitiesOther long-term assets74,201 74,201 18,675 18,675 
Convertible noteOther long-term assets10,141 10,141 — — 
Financial Liabilities:
2021 Term Loan A-1, due December 2022 2
Long-term debt – less current portion199,676 200,000 — — 
2021 Term Loan A-2, due September, 2024 2
Long-term debt – less current portion199,607 200,000 — — 
2021 Term Loan A-3, due September 2026 2
Long-term debt – less current portion798,352 800,000 — — 
2021 Revolver, due September 2026Revolving line of credit260,000 260,000 — — 
2021 Prudential Notes 3
Finance lease liabilities and long-term debt
– current portion,
Long-term debt – less current portion
47,265 47,354 — — 
2021 RSA, due April 2024 4
Accounts receivable securitization
– less current portion
278,483 279,000 — — 
Contingent consideration associated with acquisitionAccrued liabilities, Other long-term liabilities13,100 13,100 16,200 16,200 
2017 Term Loan, due October 2022 5
Long-term debt – less current portion$— $— $298,907 $300,000 
2017 Revolver, due October 2022Revolving line of credit— — 210,000 210,000 
2018 RSA, due July 2021 6
Accounts receivable securitization
– current portion
— — 213,918 214,000 
1Refer to Note 5 for the differences between the carrying amounts and estimated fair values of the Company's restricted investments, held-to-maturity.
2The carrying amounts of the 2021 Term Loan A-1, 2021 Term Loan A-2, and 2021 Term Loan A-3 arenet of $0.3 million, $0.4 million, and $1.6 million in deferred loan costs as of December 31, 2021, respectively.
3The carrying amount of the 2021 Prudential Notes is net of $0.1 million in deferred loan costs and $2.4 million in fair value adjustments as of December 31, 2021.
4The carrying amount of the 2021 RSA is net of $0.5 million in deferred loan costs as of December 31, 2021.
5The carrying amount of the 2017 Term Loan is net of $1.1 million in deferred loan costs as of December 31, 2020
6The carrying amount of the 2018 RSA is net of $0.1 million in deferred loan costs as of December 31, 2020.
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 December 31, 2019 December 31, 2018
 Carrying
Value
 Estimated
Fair Value
 Carrying
Value
 Estimated
Fair Value
 (In thousands)
Financial Assets:       
Restricted investments, held-to-maturity ¹$8,912
 $8,915
 $17,413
 $17,398
TRP Investments30,878
 30,878
 20,646
 20,646
Investments in equity securities ²8,722
 8,722
 
 
        
Financial Liabilities:       
Term Loan, due October 2020 ³$364,825
 $365,000
 $364,590
 $365,000
2018 RSA, due July 2021 4
204,762
 205,000
 239,606
 240,000
Revolver, due October 2022279,000
 279,000
 195,000
 195,000
        
1Refer to Note 6 for the differences between the carrying amounts and estimated fair values of the Company's restricted investments, held-to-maturity.
2The investments are carried at fair value and are included in "Other long-term assets" on the consolidated balance sheets.
3
The carrying amount of the Term Loan is included in "Finance lease liabilities and long-term debt – current portion" and is net of $0.2 million of deferred loan costs as of December 31, 2019. The carrying amount of the Term Loan is included in "Long-term debt – less current portion" and is net of $0.4 million of deferred loan costs as of December 31, 2018.

KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED
4
The carrying amount of the 2018 RSA is included in "Accounts receivable securitization," and is net of $0.2 million and $0.4 million in deferred loan costs as of December 31, 2019 and December 31, 2018, respectively.
Recurring Fair Value Measurements (Assets) — The following table depicts the level in the fair value hierarchy of the inputs used to estimate fair value of assets measured on a recurring basis as of December 31, 20192021 and 2018:2020:
  Fair Value Measurements at Reporting Date Using
Estimated Fair ValueLevel 1 InputsLevel 2 InputsLevel 3 InputsUnrealized Gain Position
(In thousands)
As of December 31, 2021
Convertible note 1
$10,141 $— $— $10,141 $141 
Investments in equity securities 2
74,201 74,201 — — 14,456 
As of December 31, 2020
Investments in equity securities 3
18,675 18,675 — — 3,553 
   Fair Value Measurements at Reporting Date Using  
 Estimated Fair Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Losses
 (In thousands)
As of December 31, 2019         
Investments in equity securities ¹$8,722
 $8,722
 $
 $
 $(184)

1
1Total unrealized losses for these investments are included within "Other income, net" within the consolidated statements of comprehensive income for 2019. The Company did not sell any equity investments during 2019 and therefore did not realize any losses on these investments.
AsThe Company recognized $0.1 million of December 31, 2018, there were 0 major categories of assetsunrealized gains on the convertible note during 2021, which is included within "Other income, net" within the consolidated balance sheets estimated atstatements of comprehensive income. The fair value that wereof the note was determined using a discounted cash flow analysis based on the probability of exit event options and exit event dates.
2Fair value activity from the investments in equity securities is recorded in "Other income, net" within the consolidated statements of comprehensive income. During 2021, the Company recognized $16.4 million in gains on these investments in equity securities, consisting of $10.9 million in unrealized gains and $5.5 million in realized gains.
3Fair value activity from the investments in equity securities is recorded in "Other income, net" within the consolidated statements of comprehensive income. During 2020, the Company recognized $3.7 million in unrealized gains on these investments in equity securities.
Recurring Fair Value Measurements (Liabilities) — The following table depicts the level in the fair value hierarchy of the inputs used to estimate the fair value of liabilities measured on a recurring basis.basis as of December 31, 2021 and 2020.

 Fair Value Measurements at Reporting Date Using
Estimated Fair ValueLevel 1 InputsLevel 2 InputsLevel 3 InputsTotal Gain (Loss)
(In thousands)
As of December 31, 2021
Contingent consideration associated with acquisition 1
$13,100 $— $— $13,100 $— 
As of December 31, 2020
Contingent consideration associated with acquisition 2
16,200 — — 16,200 (6,730)
1The Company did not recognize any gains (losses) during 2021 related to the revaluation of these liabilities. Refer to Note 4 for information regarding the components of these liabilities.
2During the fourth quarter of 2020, the Company increased the estimated fair value of the remaining contingent consideration representing the final two annual payments, resulting in a $6.7 million fair value adjustment of the deferred earnout, which was recorded in “Miscellaneous operating expenses” in the consolidated statement of comprehensive income.
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Recurring Fair Value Measurements (Liabilities) — As of December 31, 2019 and 2018, there were 0 major categories of liabilities included in the Company's consolidated balance sheets at estimated fair value that were measured on a recurring basis.
Nonrecurring Fair Value Measurements (Assets) — The following table depicts the level in the fair value hierarchy of the inputs used to estimate the fair value of assets measured on a nonrecurring basis as of December 31, 20192021 and 2018:2020:
  Fair Value Measurements at Reporting Date Using
Estimated Fair ValueLevel 1 InputsLevel 2 InputsLevel 3 InputsTotal Loss
(In thousands)
As of December 31, 2021
Equipment 1
$— $— $— $— $(299)
As of December 31, 2020
Equipment 2
5,851 — 5,851 — (5,335)
   Fair Value Measurements at Reporting Date Using  
 Estimated Fair Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Losses
 (In thousands)
As of December 31, 2019         
Leasehold improvements ¹$
 $
 $
 $
 $(2,182)
Equipment ²1,380
 
 1,380
 
 (870)
Software ³
 
 
 
 (434)
As of December 31, 2018         
Software 4
$
 $
 $
 $
 $(550)
Equipment 5
2,800
 
 2,800
 
 (2,248)
1    Reflects the non-cash impairment of certain revenue equipment held for sale (within the non-reportable segments and the Truckload segment).

2    Reflects the non-cash impairment of certain alternative fuel technology (within the non-reportable segments) and certain revenue equipment held for sale (within the Truckload segment). The Company recognized $5.3 million of impairments during 2020.
1During the second quarter of 2019, the Company incurred an impairment of leasehold improvements related to the early termination of a lease on one of its operating properties. This impairment was recorded in the Trucking segment.
2
During the fourth quarter of 2019, the Company incurred impairment charges which were associated with certain revenue equipment technology, warehousing equipment no longer in use, and certain Swift legacy trailer models as a result of a softer used equipment market. These impairments were allocated between the Logistics and non-reportable segments based on each segment’s use of the assets.
3During the fourth quarter of 2019, the Company incurred impairment charges related to discontinued use of software systems. These impairments were allocated between the Trucking and Logistics segments based on each segment’s use of the assets.
4During the fourth quarter of 2018, the Company incurred impairment charges related to replaced software systems.
5During the fourth quarter of 2018, the Company incurred impairment charges related to the Company airplane. This impairment was allocated between the Trucking and Logistics segments based on each segment’s use of the asset.
Nonrecurring Fair Value Measurements (Liabilities) — As of December 31, 20192021 and 20182020 there were 0no liabilities included in the Company's consolidated balance sheets at estimated fair value that were measured on a nonrecurring basis.

Fair Value of Pension Plan Assets The following table sets forth the level within the fair value hierarchy of ACT's pension plan financial assets accounted for at fair value on a recurring basis. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. ACT's assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of these assets and their placement within the fair value hierarchy levels.
Fair Value Measurements at Reporting Date Using:
Estimated
Fair Value
Level 1 InputsLevel 2 InputsLevel 3 Inputs
(In thousands)
As of December 31, 2021
US equity funds$14,877 $14,877 $— $— 
International equity funds6,304 6,304 — — 
Fixed income funds47,873 47,873 — — 
Cash and cash equivalents1,413 1,413 — — 
Total pension plan assets$70,467 $70,467 $— $— 
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Note 24 — Related Party Transactions
The following table presents Knight-Swift's transactions with companies controlled by and/or affiliated with its related parties:
202120202019
Provided by Knight-SwiftReceived by Knight-SwiftProvided by Knight-SwiftReceived by Knight-SwiftProvided by Knight-SwiftReceived by Knight-Swift
(In thousands)
Freight Services:
Central Freight Lines 1
$— $— $7,837 $— $19,651 $— 
SME Industries 1
— — 56 — 345 — 
Total$— $— $7,893 $— $19,996 $— 
Facility and Equipment Leases:
Central Freight Lines 1
$— $— $48 $277 $322 $369 
Other Affiliates 1
— 311 11 229 18 — 
Total$— $311 $59 $506 $340 $369 
Other Services:
Central Freight Lines 1
$— $— $427 $— $1,834 $— 
DPF Mobile 1
— — — 33 — 220 
Other Affiliates 1
31 35 15 35 39 2,432 
Total$31 $35 $442 $68 $1,873 $2,652 
 2019 2018 2017
 Provided by Knight-Swift Received by Knight-Swift Provided by Knight-Swift Received by Knight-Swift Provided by Knight-Swift Received by Knight-Swift
 (In thousands)
Freight Services:           
Central Freight Lines ¹$19,651
 $
 $681
 $
 $161
 $
SME Industries ¹345
 
 698
 
 275
 
Total$19,996
 $
 $1,379
 $

$436
 $
            
Facility and Equipment Leases:           
Central Freight Lines ¹$322
 $369
 $916
 $370
 $245
 $92
Other Affiliates ¹18
 
 19
 
 
 
Total$340
 $369
 $935
 $370
 $245
 $92
            
Other Services:           
Central Freight Lines ¹$1,834
 $
 $
 $
 $
 $
Updike Distribution and Logistics ²4
 
 554
 
 2,771
 
DPF Mobile ¹
 220
 
 308
 
 
Other Affiliates ¹35
 2,432
 35
 2,282
 48
 604
Total$1,873
 $2,652
 $589
 $2,590
 $2,819
 $604
            
11    Entities affiliated with former Board member Jerry Moyes include Central Freight Lines, SME Industries, Compensi Services, and DPF Mobile. Transactions with these entities that are controlled by and/or are otherwise affiliated with Jerry Moyes, include freight services, facility leases, equipment sales, and other services.
Freight Services Provided by Knight-Swift The Company charges each of these companies for transportation services.
Freight Services Received by Knight-SwiftTransportation services received from Central Freight represent less-than-truckload freight services rendered to haul parts and equipment to Company shop locations.
Other Services Provided by Knight-SwiftOther services provided by the Company to the identified related parties include equipment sales and miscellaneous services.
Other Services Received by Knight-SwiftConsulting fees, diesel particulate filter cleaning, and certain third-party payroll and employee benefits administration services from the identified related parties are included in other services received by the Company.
In conjunction with Swift's September 8, 2016 announcement that Jerry Moyes would retireinclude Central Freight Lines, SME Industries, and DPF Mobile. "Other affiliates" includes entities that are associated with various board members and executives and require approval by the Board prior to completing transactions. Transactions with these entities generally include freight services, facility and equipment leases, equipment sales, and other services.
Freight Services Provided by Knight-Swift The Company charges each of these companies for transportation services.
Freight Services Received by Knight-SwiftTransportation services received from his position as Chief Executive Officer effective December 31, 2016, Swift entered into an agreement with Mr.Central Freight represent less-than-truckload freight services rendered to haul parts and equipment to Company shop locations.
Other Services Provided by Knight-SwiftOther services provided by the Company to the identified related parties include equipment sales and miscellaneous services.
Other Services Received by Knight-SwiftConsulting fees, diesel particulate filter cleaning, sales of various parts and tractor accessories, and certain third-party payroll and employee benefits administration services from the identified related parties are included in other services received by the Company.
During the quarter ended September 30, 2020, the ownership percentage of Jerry Moyes and related affiliates fell below the threshold requiring related party disclosure. The amounts included in this Note 24 pertain to memorializetransactions that occurred prior to the terms of his retirement, which was assumed by Knight-Swift. Swift contracted with Mr. Moyesdate that the ownership percentage changed.
Receivables and payables pertaining to serve as a non-employee consultant from January 1, 2017 through December 31, 2019, during which time Swift paid Mr. Moyes a monthly consulting fee in cash.related party transactions were:

December 31,
20212020
ReceivablePayableReceivablePayable
(In thousands)
Central Freight Lines$— $— $133 $— 
DPF Mobile— — — 41 
Other Affiliates14 44 10 
Total$14 $44 $135 $51 
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The following is a rollforward of the accrued liability for the consulting fees:
 (In thousands)
Accrued consulting fees – Jerry Moyes, balance at December 31, 2018 1a
$2,225
Additions to accrual
Less: payments(2,225)
Accrued consulting fees – Jerry Moyes, balance at December 31, 2019$
  
1aThe balance is included in "Accrued liabilities" (current) in the consolidated balance sheets, based on the timing of the payments.
2
Knight had an arrangement with Updike Distribution Logistics, LLC, a company that is owned by the father and three brothers of Executive Vice President of Sales and Marketing, James Updike, Jr. The arrangement allowed Updike Distribution Logistics, LLC to purchase fuel from Knight's vendors at cost, plus an administrative fee. The arrangement was terminated during the second quarter of 2018. Activities in 2019 pertain to sales of various spare parts and tractor accessories.
Receivables and payables pertaining to related party transactions were:
 December 31,
 2019 2018
 Receivable Payable Receivable Payable
 (In thousands)
Central Freight Lines$2,872
 $
 $254
 $
SME Industries17
 
 24
 
Other Affiliates
 2
 
 20
Total$2,889
 $2
 $278
 $20
        

Land PurchaseIn November 2018, the Company purchased land in Perris, California for $7.7 million from former Board member Jerry Moyes.
Share RepurchaseOn December 27, 2018, the Company purchased 1,173,680 shares of the Company’s common stock from an entity controlled by Jerry Moyes, a former Board member of the Company. The shares were purchased for an aggregate purchase price of $29.3 million, or $24.98 per share. The per share purchase price represents a three cent per share discount from the closing price of the Company’s common stock on December 26, 2018. The Company purchased the shares under the 2018 Knight-Swift Share Repurchase Plan.
Note 25 — Information by Segment, Geography, and Customer Concentration
Segment Information
As discussed in Note 1, theThe Company reorganized its reportable segments during the first quarter of 2019. Accordingly, the Company now has 34 reportable segments: Trucking,Truckload, Logistics, LTL, and Intermodal, as well as the non-reportable segments, discussed below. See Note 2Based on how economic factors affect the nature, amount, timing, and uncertainty of revenue or cash flows, the Company disaggregates revenues by reportable segment for discussionthe purposes of applying the ASC 606 guidance.
The Company's twenty-four operating segments are structured around the types of transportation service offerings provided to our customers, as well as the equipment utilized. In addition, the operating segments may be further distinguished by the Company’s respective brands. The Company aggregated these various operating segments into the four reportable segments discussed below based on similarities with both their qualitative and economic characteristics.
Truckload
The Truckload reportable segment is comprised of nine full truckload operating segments that provide similar transportation services to the Company's accounting policy related to segments.
Trucking
customers utilizing similar transportation equipment over both irregular (one-way movement) and/or dedicated routes.The TruckingTruckload reportable segment is comprisedconsists of irregular route and dedicated, refrigerated, expedited, flatbed, and cross-border operations. Abilene's trucking operations are also included after the March 16, 2018 acquisition date.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Logistics
The Logistics reportable segment is comprised of six logistics operating segments that provide similar transportation services to the Company's customers and primarily comprisedconsist of brokerage and other freight management services. Abilene's logistics operations areservices utilizing third-party transportation providers and their equipment.
LTL
Our LTL segment, established in 2021 through the ACT and MME acquisitions, is comprised of two operating segments and provides our customers with regional LTL transportation services through a network of approximately 100 service centers in the Company's geographical footprint. The Company's LTL service also included afterincludes national coverage to customers by utilizing partner carriers for areas outside of the March 16, 2018 acquisition date.Company's direct network.
Intermodal
The Intermodal reportable segment includes revenue generated by moving freight over the rail inis comprised of two intermodal operating segments that provide similar transportation services to the Company's containers and othercustomers.These transportation services include arranging the movement of customers' freight through third-party intermodal rail services on the Company’s trailing equipment combined with the Company's revenue for(containers and trailers on flat cars), as well as drayage services to transport loads between the railheads and customer locations.
Non-reportable
The non-reportable segments include five operating segments that consist of support services provided to the Company's customers and independent contractors (including repair and maintenance shop services, equipment leasing, warranty services, and insurance), trailer parts manufacturing, warehousing, and certain driving academy activities, as well as certain corporate expenses (such as legal settlements and accruals, certain impairments, and amortization of intangibles related to the 2017 Merger and certainvarious acquisitions).
Intersegment Eliminations
Certain operating segments provide transportation and related services for other affiliates outside their reportable segment.segments. For certain operating segments, such services are billed at cost, and no profit is earned. For the other operating segments, revenues for such services are based on negotiated rates, and are reflected as revenues of the billing segment. These rates are adjusted from time to time, based on market conditions. Such intersegment revenues and expenses are eliminated in Knight-Swift's consolidated results.
The following tables present the Company's financial information by segment:
117
 2019 2018 (recast) 2017 (recast)
Total revenue:(Dollars in thousands)
Trucking$3,952,866
 81.6% $4,290,254
 80.3% $1,970,326
 81.2%
Logistics$352,988
 7.3% $436,044
 8.2% $235,925
 9.7%
Intermodal$455,466
 9.4% $498,821
 9.3% $150,326
 6.2%
Subtotal$4,761,320
 98.3% $5,225,119
 97.8% $2,356,577
 97.1%
Non-reportable segments$130,782
 2.7% $184,140
 3.4% $93,875
 3.9%
Intersegment eliminations$(48,152) (1.0%) $(65,193) (1.2%) $(24,999) (1.0%)
Total revenue$4,843,950
 100.0% $5,344,066
 100.0% $2,425,453
 100.0%
            

 2019 2018 (recast) 2017 (recast)
Operating income (loss):(Dollars in thousands)
Trucking$468,749
 109.7% $550,818
 96.8% $203,258
 101.3%
Logistics$21,869
 5.1% $31,991
 5.6% $15,168
 7.6%
Intermodal$4,501
 1.1% $31,272
 5.5% $7,041
 3.5%
Subtotal$495,119
 115.9% $614,081
 107.9% $225,467
 112.4%
Non-reportable segments$(67,681) (15.9%) $(45,038) (7.9%) $(24,837) (12.4%)
Operating income$427,438
 100.0% $569,043
 100.0% $200,630
 100.0%
            

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

The following tables present the Company's financial information by segment:
202120202019
Total revenue:(Dollars in thousands)
Truckload$4,098,005 68.3 %$3,786,030 81.0 %$3,952,866 81.6 %
Logistics$817,003 13.6 %$375,841 8.0 %$352,988 7.3 %
LTL$396,308 6.6 %$— — %$— — %
Intermodal$458,867 7.7 %$391,462 8.4 %$455,466 9.4 %
Subtotal$5,770,183 96.2 %$4,553,333 97.4 %$4,761,320 98.3 %
Non-reportable segments$306,414 5.1 %$188,882 4.0 %$130,782 2.7 %
Intersegment eliminations$(78,578)(1.3 %)$(68,352)(1.4 %)$(48,152)(1.0 %)
Total revenue$5,998,019 100.0 %$4,673,863 100.0 %$4,843,950 100.0 %
2019 2018 (recast) 2017 (recast)202120202019
Depreciation and amortization of property and equipment:(Dollars in thousands)
Trucking$355,270
 84.6% $319,210
 82.4% $169,339
 87.4%
Operating income (loss):Operating income (loss):(Dollars in thousands)
TruckloadTruckload$784,436 81.2 %$578,512 102.5 %$468,749 109.7 %
Logistics$728
 0.2% $607
 0.2% $348
 0.2%Logistics$93,920 9.7 %$20,245 3.6 %$21,869 5.1 %
LTLLTL$31,169 3.2 %$— — %$— — %
Intermodal$13,506
 3.2% $12,044
 3.1% $3,253
 1.7%Intermodal$42,060 4.4 %$(943)(0.2 %)$4,501 1.1 %
Subtotal$369,504
 88.0% $331,861
 85.7% $172,940
 89.3%Subtotal$951,585 98.5 %$597,814 105.9 %$495,119 115.9 %
Non-reportable segments$50,578
 12.0% $55,644
 14.3% $20,793
 10.7%Non-reportable segments$14,112 1.5 %$(33,376)(5.9 %)$(67,681)(15.9 %)
Consolidated depreciation and amortization of property and equipment$420,082
 100.0% $387,505
 100.0% $193,733
 100.0%
Operating incomeOperating income$965,697 100.0 %$564,438 100.0 %$427,438 100.0 %
           

202120202019
Depreciation and amortization of property and equipment:(Dollars in thousands)
Truckload$422,558 80.9 %$390,417 84.7 %$355,270 84.6 %
Logistics$1,357 0.3 %$829 0.2 %$728 0.2 %
LTL$24,844 4.8 %$— — %$— — %
Intermodal$15,345 2.9 %$14,377 3.1 %$13,506 3.2 %
Subtotal$464,104 88.9 %$405,623 88.0 %$369,504 88.0 %
Non-reportable segments$58,492 11.1 %$55,152 12.0 %$50,578 12.0 %
Consolidated depreciation and amortization of property and equipment$522,596 100.0 %$460,775 100.0 %$420,082 100.0 %
Geographical Information
In aggregate, operating revenue from the Company's foreign operations was less than 5.0% of consolidated total revenue for each of 2019, 2018,2021, 2020, and 2017.2019. Additionally, long-lived assets on the balance sheets of the Company's foreign subsidiaries were less than 5.0% of consolidated "Total assets" as of December 31, 20192021 and 2018.2020.
Customer Concentration
Services provided to the Company's largest customer Walmart, generated 13.3%16.1%, 14.6%16.8%, and 12.5%13.3% of total revenue in 2019, 2018,2021, 2020, and 2017,2019, respectively. Revenue generated by Walmartthe Company's largest customer is reported in each of our reportable operating segments. No other customer accounted for 10.0% or more of total revenue in 2019, 2018,2021, 2020, or 2017.2019.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Note 26 — Quarterly Results of Operations (Unaudited)
In management's opinion, the following summarized financial information fairly presents the Company's results of operations for the quarters noted. These results are not necessarily indicative of future quarterly results.
 First Quarter Second Quarter Third Quarter Fourth Quarter
 (In thousands, except per share data)
2019       
Total revenue$1,204,535
 $1,242,083
 $1,200,522
 $1,196,810
Net income88,183
 79,439
 74,981
 67,575
Net income attributable to Knight-Swift87,938
 79,205
 74,619
 67,444
Basic earnings per share0.51
 0.46
 0.44
 0.40
Earnings per diluted share0.51
 0.46
 0.44
 0.39
2018       
Total revenue$1,271,132
 $1,331,683
 $1,346,611
 $1,394,640
Net income70,732
 91,628
 106,344
 151,945
Net income attributable to Knight-Swift70,364
 91,323
 105,881
 151,696
Basic earnings per share0.39
 0.51
 0.60
 0.87
Earnings per diluted share0.39
 0.51
 0.60
 0.86

ITEM 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
None.

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ITEM 9A.CONTROLS AND PROCEDURES
Disclosure Controls and Procedures
As of the end of the period covered by this annual report on Form 10-K, we carried out an evaluation, under the supervision and with the participation of our management, including our CEO and CFO, of the effectiveness of our disclosure controls and procedures as such term is defined in Exchange Act Rules 13a-15(e) and 15d-15(e), including controls and procedures to timely alert management to material information relating to Knight-Swift Transportation Holdings Inc. and subsidiaries required to be included in our periodic SEC filings. Based on that evaluation, our CEO and CFO have concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.
Changes in Internal Control over Financial Reporting
There has been no significant change in our internal control over financial reporting during the quarter ended December 31, 20192021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.
Management's Report on Internal Control over Financial Reporting
Management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934. The Company's internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States. Internal control over financial reporting includes policies and procedures that:
(1)pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the Company's assets;
(2)provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures are being made only in accordance with the authorization of management and directors of the Company; and
(3)provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company's assets that could have a material effect on the financial statements.
(1)pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the Company's assets;
(2)provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures are being made only in accordance with the authorization of management and directors of the Company; and
(3)provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company's assets that could have a material effect on the financial statements.
Because of inherent limitations, internal control over financial reporting may not prevent or detect misstatements.  Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation.
Under the supervision and with the participation of our CEO and CFO, management conducted an evaluation of the Company's internal control over financial reporting as of December 31, 2019.2021.  In making this evaluation, management used the criteria in Internal Control - Integrated Framework, issued in 2013 by the Committee of Sponsoring Organizations of the Treadway Commission ("COSO").  Based on this assessment, management concluded that its internal control over financial reporting was effective as of December 31, 2019.2021.
The effectiveness of internal control over financial reporting as of December 31, 20192021 was audited by Grant Thornton LLP, the independent registered public accounting firm that also audited the Company's consolidated financial statements included in this Annual Report on Form 10-K.  Grant Thornton LLP's report on the Company's internal control over financial reporting is included herein.

In July 2021, we completed the ACT Acquisition. For further discussion of the ACT Acquisition, refer to Note 4 in Part II, Item 8. We are in the process of evaluating the existing controls and procedures of ACT and integrating ACT in our disclosure controls and procedures and internal control over financial reporting. SEC guidance permits companies to exclude acquisitions from their assessment of internal control over financial reporting for the fiscal year in which the acquisition occurred, and our management has elected to exclude ACT from its assessment. ACT constituted 14.0% and 6.0% of our consolidated total assets and consolidated revenues, respectively, as of and for the year ended December 31, 2021.
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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Shareholders
Knight-Swift Transportation Holdings Inc.

Opinion on internal control over financial reporting
We have audited the internal control over financial reporting of Knight-Swift Transportation Holdings Inc. (an Arizona(a Delaware corporation) and subsidiaries (the “Company”"Company") as of December 31, 2019,2021, based on criteria established in the 2013 Internal Control-IntegratedControl—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”("COSO"). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2019,2021, based on criteria established in the 2013 Internal Control-IntegratedControl—Integrated Framework issued by COSO.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”("PCAOB"), the consolidated financial statements of the Company as of and for the year ended December 31, 2019,2021, and our report dated February 27, 202024, 2022 expressed an unqualified opinion on those financial statements.
Basis for opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s reportReport on Internal Control over Financial Reporting.Reporting ("Management's Report"). Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
Our audit of, and opinion on, the Company’s internal control over financial reporting does not include the internal control over financial reporting of AAA Cooper Transportation ("ACT"), a wholly-owned subsidiary, whose financial statements reflect total assets and revenues constituting 14 and 6 percent, respectively, of the related consolidated financial statement amounts as of and for the year ended December 31, 2021. As indicated in Management’s Report, ACT was acquired during 2021. Management’s assertion on the effectiveness of the Company’s internal control over financial reporting excluded internal control over financial reporting of ACT.
Definition and limitations of internal control over financial reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
/s/ GRANT THORNTON LLP

Phoenix, Arizona
February 27, 2020


24, 2022
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ITEM 9B.OTHER INFORMATION
None.
PART IIIITEM 9B.OTHER INFORMATION
None.
ITEM 9CDISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS
Not applicable.
PART III
ITEM 10.DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
The information required under this Item 10 is hereby incorporated by reference to the information set forth under the captions "Proposal No. 1: Election of Directors," "Management," "Delinquent Section 16(a) Reports," "The Board of Directors and Corporate Governance — Code of Business Conduct and Ethics," "The Board of Directors and Corporate Governance — Nomination of Director Candidates," and "The Board of Directors and Corporate Governance — Board Committees" in the Company's definitive proxy statement for its 20202022 Annual Meeting of Stockholders to be filed with the SEC.
ITEM 11.EXECUTIVE COMPENSATION
The information required under this Item 11 is hereby incorporated by reference to the information set forth under the captions "Executive Compensation," "Compensation Committee Interlocks and Insider Participation," and "Compensation Committee Report" in the Company's definitive proxy statement for its 20202022 Annual Meeting of Stockholders to be filed with the SEC.
ITEM 12.SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
Equity Plan Information
Before the 2017 Merger, Knight and Swift granted stock-based awards under their respective stock-based compensation plans, discussed below.
2014 Stock Plan — Currently, the 2014 Stock Plan, as amended and restated, is the Company’s only compensatory stock-based incentive plan. The previous 2014 stock plan replaced Swift's 2007 Omnibus Incentive Plan when it was adopted by Swift's board of directors in March 2014 and then approved by the Swift stockholders in May 2014. The previous 2014 stock plan was amended and restated to rename the plan and for other administrative changes relating to the 2017 Merger. The 2014 Stock Plan was again amended and restated in 2020 to increase the number of shares of common stock available for issuance and extended the term of the 2014 Stock Plan, as well as to amend certain provisions to comply with best practices. Other terms of the 2014 Stock Plan, as amended and restated, remain substantially the same as the previous 2014 stock plan and first amended and restated stock plan. The 2014 Stock Plan, as amended and restated, permits the payment of cash incentive compensation and authorizes the granting of stock options, stock appreciation rights, restricted stock and restricted stock units, performance shares and performance units, cash-based awards, and stock-based awards to the Company's employees and non-employee directors.
Legacy Plans — In connection with the 2017 Merger, the registered securities under the Knight Amended and Restated 2003 Stock Option Plan, the Knight 2012 Equity Compensation Plan, the Knight Amended and Restated 2015 Omnibus Incentive Plan, and the Swift 2007 Omnibus Incentive Plan (collectively, the "Legacy Plans") were deregistered. As such, no future awards may be granted under these Legacy Plans. Outstanding awards granted under the Legacy Plans were assumed by the combined company and continue to be governed by such Legacy Plans until such awards have been exercised, forfeited, canceled, or have otherwise expired or terminated.
2012 ESPP — In 2012, Swift's board of directors adopted, and its stockholders approved, the 2012 ESPP. Pursuant to theThe 2012 ESPP, as amended, authorized the Company is authorizedCompany to issue shares of its common stock to eligible employees who participate in the plan. The 2012 ESPP was amended and restated in January 2018 to be a Knight-Swift plan, thus permitting Knight employees to participate in the plan in addition to Swift employees. The terms and definitions of the amended and restated 2012 ESPP remain substantially the same as the original 2012 ESPP.


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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
The following table represents securities authorized for issuance under the Company's stock plans at December 31, 2019:2021:
Number of securities to be issued upon exercise of outstanding options, warrants and rightsWeighted-average exercise price of outstanding options, warrants and rights Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
Plan Category:(a)(b)(c)
Equity compensation plans approved by security holders2,366,372 $31.95 5,681,000 
Equity compensation plans not approved by security holders— — — 
Total2,366,372 $31.95 5,681,000 
 Number of securities to be issued upon exercise of outstanding options, warrants and rights Weighted-average exercise price of outstanding options, warrants and rights  Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
Plan Category:(a) (b) (c)
Equity compensation plans approved by security holders2,552,562
 $30.34
 2,860,077
Equity compensation plans not approved by security holders
 
 
Total2,552,562
 $30.34
 2,860,077
      
Column (a) includes 1,851,8892,281,365 shares of Knight-Swift common stock underlying outstanding restricted stock units and performance units. Because there is no exercise price associated with such awards, such equity awards are not included in the weighted-average exercise price calculation in column (b).
Columns (a) and (b) pertain to the 2014 Stock Plan. No amounts related to the 2012 ESPP are included in columns (a) or (b). Column (c) includes 1,783,5694,729,787 shares available for issuance under the 2014 Stock Plan and 1,076,508951,213 shares available for issuance under the 2012 ESPP.
Other information required under this Item 12 is hereby incorporated by reference to the information set forth under the caption "Security Ownership of Certain Beneficial Owners and Management" in the Company's definitive proxy statement for its 20202022 Annual Meeting of Stockholders to be filed with the SEC.
ITEM 13.CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
The information required under this Item 13 is hereby incorporated by reference to the information set forth under the captions "Relationships and Related Party Transactions," "The Board of Directors and Corporate Governance — Composition of Board," "The Board of Directors and Corporate Governance — Board Leadership Structure," and "The Board of Directors and Corporate Governance — Board Committees" in the Company's definitive proxy statement for its 20202022 Annual Meeting of Stockholders to be filed with the SEC.
ITEM 14.PRINCIPAL ACCOUNTANT FEES AND SERVICES
The information required under this Item 14 is hereby incorporated by reference to the information set forth under the caption "Audit and Non-Audit Fees" in the Company's definitive proxy statement for its 20202022 Annual Meeting of Stockholders to be filed with the SEC.

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PART IV
ITEM 15.EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a)    List of documents filed as a part of this Form 10-K:
(1)    See the Consolidated Financial Statements included in Item 8 hereof.
(2)     Financial Statement Schedules are omitted since the required information is not present or is not present in the amounts sufficient to require submission of a schedule, or because the information required is included in the consolidated financial statements, including the notes thereto.
(b)     Exhibits
Exhibit NumberDescriptionPage or Method of Filing
PART IV
ITEM 15.EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a)List of documents filed as a part of this Form 10-K:
(1)See the Consolidated Financial Statements included in Item 8 hereof.
(2)Financial Statement Schedules are omitted since the required information is not present or is not present in the amounts sufficient to require submission of a schedule, or because the information required is included in the consolidated financial statements, including the notes thereto.
(b)Exhibits
Exhibit NumberDescriptionPage or Method of Filing

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Exhibit NumberDescriptionPage or Method of Filing

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Exhibit NumberDescriptionPage or Method of Filing

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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

Exhibit Number Description  Page or Method of Filing
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
101.INS Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document Filed herewith
     
101.SCH XBRL Taxonomy Extension Schema Document Filed herewith
     
101.CAL XBRL Taxonomy Calculation Linkbase Document Filed herewith
     
101.DEF XBRL Taxonomy Extension Definition Document Filed herewith
     
101.LAB XBRL Taxonomy Label Linkbase Document Filed herewith
     
101.PRE XBRL Taxonomy Presentation Linkbase Document Filed herewith
     

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Exhibit NumberDescriptionPage or Method of Filing
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Exhibit NumberDescriptionPage or Method of Filing
104
101.INSInstance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL documentFiled herewith
101.SCHXBRL Taxonomy Extension Schema DocumentFiled herewith
101.CALXBRL Taxonomy Calculation Linkbase DocumentFiled herewith
101.DEFXBRL Taxonomy Extension Definition DocumentFiled herewith
101.LABXBRL Taxonomy Label Linkbase DocumentFiled herewith
101.PREXBRL Taxonomy Presentation Linkbase DocumentFiled herewith
104Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)Filed herewith
*    Schedules have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company agrees to furnish to the SEC a supplemental copy of any omitted schedule upon request by the SEC.
**    Management contract or compensatory plan, contract, or arrangement.

*Schedules have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company agrees to furnish to the SEC a supplemental copy of any omitted schedule upon request by the SEC.
**Management contract or compensatory plan, contract, or arrangement.

ITEM 16.10-K SUMMARY
Not applicable.


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KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.

SIGNATURES
Pursuant to the requirement of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC.
By:/s/ David A. Jackson
David A. Jackson
President and Chief Executive Officer
in his capacity as such and on behalf of the registrant
February 27, 202024, 2022
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
Signature and TitleDateSignature and TitleDate
/s/ David A. JacksonFebruary 24, 2022/s/ Michael GarnreiterFebruary 24, 2022
David A. JacksonMichael Garnreiter
President, Chief Executive Officer, and DirectorDirector
(Principal Executive Officer)
Signature and TitleDateSignature and TitleDate
/s/ David A. JacksonFebruary 27, 2020/s/ Michael GarnreiterFebruary 27, 2020
David A. JacksonMichael Garnreiter
President, Chief Executive Officer, and DirectorDirector
(Principal Executive Officer)
/s/ Adam W. MillerFebruary 27, 202024, 2022/s/ Robert Synowicki, Jr.February 27, 202024, 2022
Adam W. MillerRobert Synowicki, Jr.
Chief Financial OfficerDirector
(Principal Financial Officer)
/s/ Cary M. FlanaganFebruary 27, 202024, 2022/s/ David Vander PloegFebruary 27, 202024, 2022
Cary M. FlanaganDavid Vander Ploeg
Chief Accounting OfficerDirector
(Principal Accounting Officer)
/s/ Kevin P. KnightFebruary 27, 202024, 2022/s/ Kathryn MunroFebruary 27, 202024, 2022
Kevin P. KnightKathryn Munro
Executive ChairmanDirector
/s/ Gary J. KnightFebruary 27, 202024, 2022/s/ Roberta Roberts ShankFebruary 27, 202024, 2022
Gary J. KnightRoberta Roberts Shank
Executive Vice ChairmanDirector
/s/ Reid B. DoveFebruary 24, 2022/s/ Louis HobsonFebruary 24, 2022
Reid B. DoveLouis Hobson
DirectorDirector


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