FSS US Equity☆

fss-20231231

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

___________________________________

FORM 10-K

(Mark One)

For the fiscal year ended December 31, 2023

OR

For the transition period from to

Commission File Number 1-6003

FEDERAL SIGNAL CORPORATION

(Exact name of registrant as specified in its charter)

1415 West 22nd Street, Oak Brook, Illinois

(Address of principal executive offices)

60523

(Zip Code)

(630) 954-2000

(Registrant’s telephone number, including area code)

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

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, par value $1.00 per share FSS New 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 shorter period that the registrant was required to submit such files). Yes☑ No ☐

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

Large accelerated filer ☑ Accelerated filer ☐

Non-accelerated filer ☐ Smaller reporting company ☐

Emerging growth company ☐

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. ☑

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

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

As of June 30, 2023, the aggregate market value of voting stock held by non-affiliates was $3,810,728,098. For purposes of the foregoing calculation only, executive officers and directors of the registrant have been deemed to be affiliates.

As of January 31, 2024, the number of shares outstanding of the registrant’s common stock was 60,996,238.

Documents Incorporated By Reference

Portions of the registrant’s definitive proxy statement for the 2024 Annual Meeting of Stockholders are incorporated by reference in Part III.

Table of Contents

FEDERAL SIGNAL CORPORATION

TABLE OF CONTENTS

PART I Page

Item 1. Business 2

Item 1A. Risk Factors 7

Item 1B. Unresolved Staff Comments 13

Item 1C. Cybersecurity 13

Item 2. Properties 13

Item 3. Legal Proceedings 14

Item 4. Mine Safety Disclosures 14

PART II

Item 6. Reserved 15

Item 7A. Quantitative and Qualitative Disclosures about Market Risk 28

Item 8. Financial Statements and Supplementary Data 29

Item 9A. Controls and Procedures 76

Item 9B. Other Information 76

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections 76

PART III

Item 10. Directors, Executive Officers and Corporate Governance 77

Item 11. Executive Compensation 77

Item 14. Principal Accounting Fees and Services 77

PART IV

Item 15. Exhibits, Financial Statement Schedules 78

Exhibit Index 79

Signatures 82

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FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K (“Form 10-K”) is being filed by Federal Signal Corporation and its subsidiaries (referred to collectively as the “Company,” “we,” “our” or “us” herein, unless the context otherwise indicates) with the United States (“U.S.”) Securities and Exchange Commission (the “SEC”), and includes comments made by management that may contain words such as “may,” “will,” “believe,” “expect,” “anticipate,” “intend,” “plan,” “project,” “estimate” and “objective” or similar terminology, or the negative thereof, concerning the Company’s future financial performance, business strategy, plans, goals and objectives. These expressions are intended to identify forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Private Securities Litigation Reform Act of 1995. Forward-looking statements include information concerning the Company’s possible or assumed future performance or results of operations and are not guarantees. While these statements are based on assumptions and judgments that management has made in light of industry experience as well as perceptions of historical trends, current conditions, expected future developments and other factors believed to be appropriate under the circumstances, they are subject to risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements to be materially different.

These risks and uncertainties, some of which are beyond the Company’s control, include, but are not limited to, the risk factors described under Item 1A, Risk Factors as set forth in Part I, as well as those discussed elsewhere in this Form 10-K and in our subsequently filed documents, as applicable. These factors may not constitute all factors that could cause actual results to differ materially from those discussed in any forward-looking statement. The Company operates in a continually changing business environment and new factors emerge from time to time. The Company cannot predict such factors, nor can it assess the impact, if any, of such factors on its results of operations, financial condition or cash flow. Accordingly, forward-looking statements should not be relied upon as a predictor of actual results. The Company disclaims any responsibility to update any forward-looking statement provided in this Form 10-K.

ADDITIONAL INFORMATION

The Company is subject to the reporting and information requirements of the Exchange Act and, as a result, is obligated to file Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other reports and information with the SEC, as well as amendments to those reports. The Company makes these filings available free of charge through our website at www.federalsignal.com as soon as reasonably practicable after such materials are filed with, or furnished to, the SEC. We also use our website as a means of disclosing material non-public information and to comply with our disclosure requirements under Regulation FD. Information on our website does not constitute part of this Form 10-K. In addition, the SEC maintains a website at www.sec.gov that contains reports, proxy and information statements and other information regarding issuers that file electronically.

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PART I

Item 1. Business.

Federal Signal Corporation, founded in 1901, was reincorporated as a Delaware corporation in 1969. The Company designs, manufactures and supplies a suite of products and integrated solutions for municipal, governmental, industrial and commercial customers. The Company’s portfolio of products that it manufactures includes (i) vehicles and equipment for maintenance and infrastructure end-markets, including sewer cleaners, industrial vacuum loaders, vacuum- and hydro-excavation trucks (collectively, “safe-digging trucks”), street sweepers, waterblasting equipment, road-marking and line-removal equipment, dump truck bodies, trailers, metal extraction support equipment and multi-purpose tractors, and (ii) public safety equipment, such as vehicle lightbars and sirens, industrial signaling equipment, public warning systems and general alarm/public address systems. In addition, the Company engages in the sale of parts, service and repair, equipment rentals and training as part of a comprehensive aftermarket offering to its customers. The Company operates 23 principal manufacturing facilities in five countries and provides products and integrated solutions to customers in all regions of the world.

Narrative Description of Business

Products manufactured and supplied, and services rendered, by the Company are divided into two reportable segments: the Environmental Solutions Group and the Safety and Security Systems Group. The individual operating businesses are organized as such because they share certain characteristics, including technology, marketing, distribution and product application, which create long-term synergies. Corporate contains those items that are not included in the Company’s reportable segments.

Financial information concerning the Company’s two reportable segments for each of the three years in the period ended December 31, 2023, is included in Note 17 – Segment Information to the accompanying consolidated financial statements and is incorporated herein by reference.

During the year ended December 31, 2023, the Company completed the acquisitions of substantially all of the assets and operations of Trackless Vehicles Limited and Trackless Vehicles Asset Corp, and the wholly-owned subsidiary Work Equipment Ltd. (collectively, “Trackless”) and substantially all of the assets and operations of Blasters, Inc. and Blasters Technologies, LLC (collectively, “Blasters”).

Environmental Solutions Group

The Company’s Environmental Solutions Group is a leading manufacturer and supplier of a full range of street sweepers, sewer cleaners, industrial vacuum loaders, safe-digging trucks, high-performance waterblasting equipment, road-marking and line-removal equipment, dump truck bodies, trailers, metal extraction support equipment and multi-purpose tractors. The Group manufactures vehicles and equipment in the U.S. and Canada that are sold under the Elgin®, Vactor®, Guzzler®, TRUVAC®, WestechTM, Jetstream®, Blasters, Mark Rite Lines, Trackless, Ox Bodies®, Crysteel®, J-Craft®, Duraclass®, Rugby®, Travis®, OSW, NTE, WTB, Ground Force, TowHaul®, Bucks® and Switch-N-Go® brand names. The Group’s product offerings also include certain products manufactured by other companies, such as refuse and recycling collection vehicles. Products are sold to both municipal and industrial customers either through a dealer network or direct sales to service customers generally depending on the type and geographic location of the customer. In addition to vehicle and equipment sales, the Group also engages in the sale of parts, service and repair, equipment rentals and training as part of a comprehensive aftermarket offering to its current and potential customers through its service centers located across North America.

Under the Elgin brand name, the Company sells a leading U.S. brand of street sweepers primarily designed for large-scale cleaning of curbed streets, parking lots and other paved surfaces utilizing mechanical sweeping, vacuum and recirculating air technology. Vactor is a leading manufacturer of equipment solutions for cleaning and maintaining sewers and catch basins. Under the TRUVAC brand name, the Company manufactures a range of premium vacuum- and hydro-excavation trucks designed to satisfy the safe-digging requirements of businesses or organizations that locate and verify underground utility lines and pipes. Guzzler is a leader in industrial vacuum loaders used to manage industrial waste or recover and recycle valuable raw materials. Westech is a manufacturer of high-quality, rugged vacuum-excavation trucks. Jetstream manufactures high-pressure waterblasting equipment and accessories for commercial and industrial cleaning and maintenance operations. Blasters is a leading U.S. manufacturer of truck-mounted waterblasting equipment. Mark Rite Lines Equipment Company, Inc. (“MRL”), is a U.S. manufacturer of truck-mounted and ride-on road-marking and line-removal equipment. Trackless is a leading Canadian manufacturer of off-road, multi-purpose tractors and attachments. Ground Force and TowHaul are leading manufacturers of specialty vehicles that support the extraction of metals. Truck Bodies & Equipment International (“TBEI”) manufactures and sells dump truck bodies and trailers under the Ox Bodies, Crysteel, J-Craft, Duraclass, Rugby, Travis, OSW, NTE and WTB brand names, as well as a range of interchangeable truck body systems and waste-hauling products under the Bucks and Switch-N-Go brand names.

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Safety and Security Systems Group

The Company’s Safety and Security Systems Group is a leading manufacturer and supplier of comprehensive systems and products that law enforcement, fire rescue, emergency medical services, campuses, military facilities and industrial sites use to protect people and property. Offerings include systems for community alerting, emergency vehicles, first responder interoperable communications and industrial communications. Specific products include public safety equipment, such as vehicle lightbars and sirens, industrial signaling equipment, public warning systems and general alarm/public address systems. Products are sold under the Federal SignalTM, Federal Signal VAMA®, and Victor®brand names. The Group operates manufacturing facilities in the U.S., Spain, the United Kingdom (“U.K.”), and South Africa.

Marketing and Distribution

Depending primarily on the type and geographic location of the end-customer, the Environmental Solutions Group uses either a dealer network or direct sales to serve customers. The dealer network serves both municipal and industrial end-markets. Within municipal markets, the majority of the Company’s dealers operate exclusively in their assigned territory. In conjunction with selling vehicles to end-customers, dealer representatives demonstrate vehicle functionality and capability and provide vehicle service. In addition to selling products manufactured by the Company, certain of our businesses distribute and re-sell products manufactured by other companies. The Company believes its regional, national and global dealer networks for vehicles is a distinguishing factor from its competitors. The Company has an ownership interest in certain dealers.

The Environmental Solutions Group’s direct sales channel concentrates primarily on the industrial, utility and construction market segments. To support current and potential customers in these market segments, the Group also engages in the sale of parts, service and repair, equipment rentals and training through its service centers located across North America.

The Safety and Security Systems Group sells to industrial customers through wholesalers and distributors who are supported by Company sales personnel or independent manufacturer representatives. Products are also sold to municipal and governmental customers through active independent distributors, as well as through original equipment manufacturers and the direct sales force. The Company sells comprehensive integrated warning and interoperable communications through a combination of the direct sales force and independent distributors. International sales are made through independent foreign distributors or on a direct basis.

Customers and Backlog

No single customer accounted for 10% or more of the Company’s net sales in any year within the three-year period ended December 31, 2023.

The Company’s backlog totaled $1.03 billion at December 31, 2023, compared to $879 million at December 31, 2022. Backlogs vary by group due to the nature of the Company’s products and the buying patterns of its customers. The Environmental Solutions Group typically experiences an average backlog of approximately three to six months of shipments. The Safety and Security Systems Group typically experiences an average backlog of approximately two months of shipments. While supply chain disruption and customer demand have contributed to longer lead times for certain businesses, production of the Company’s December 31, 2023 backlog is expected to be substantially completed during 2024.

Suppliers

The Company purchases a wide variety of raw materials from around the world for use in the manufacture of its products, although the majority of its purchases are currently from North American sources. To minimize risks relating to availability, price and quality of key products and components, the Company is party to numerous strategic supplier arrangements. Although certain materials are obtained from either a single-source supplier or a limited number of suppliers, the Company has generally identified alternative sources to minimize the interruption of its business in the event of supply disruptions. However, a transition to a new supplier may cause the Company to incur supply disruptions and unanticipated costs.

Components critical to the production of the Company’s vehicles, such as engines, are purchased from a select number of suppliers. The Company also purchases raw and fabricated steel, as well as commercial chassis, from multiple sources. In addition, we may incorporate chassis provided directly by our customers in our production process. In those situations, the Company’s production processes rely upon the customer providing the chassis on a timely basis. Certain of the Company’s businesses also rely on the availability of inventory supplied by others to meet customer demand.

The Company actively manages material supply sourcing and employs various methods to limit risk associated with commodity cost fluctuations and availability. Throughout 2023, supply chain conditions continued to gradually improve. However, the

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Company continues to experience sporadic supply shortages and extended lead times for some components and raw materials, including certain classes of chassis and electronic components that are important to its manufacturing processes. The Company has designed and implemented plans to partially mitigate the impact of these challenges by using alternate suppliers, re-engineering products, expanding its supply base globally, leveraging overall purchasing volumes to obtain favorable pricing and quantities and developing a closer working relationship with key suppliers. However, the Company can provide no assurance that those efforts will be successful. Although global supply chain conditions have improved in 2023, component shortages may persist into 2024, which could limit the Company’s ability to maximize production.

Competition

Within the Environmental Solutions Group, Elgin is recognized as a market leader among domestic sweeper competitors and differentiates itself primarily on product performance. The Vactor, TRUVAC and Guzzler brands each maintain a leading domestic position in their respective marketplaces by enhancing product performance with leading technology and application flexibility. Jetstream is a market leader in the in-plant cleaning segment of the U.S. waterblast industry, competing on product performance, rapid delivery and solutions services. Joe Johnson Equipment, Inc. with Joe Johnson Equipment (USA), Inc., (collectively, “JJE”), is a leading Canadian-based distributor of maintenance equipment for municipal and industrial markets. Blasters is a leading U.S. manufacturer of truck-mounted waterblasting equipment. MRL is a U.S. manufacturer of truck-mounted and ride-on road-marking and line-removal equipment. Trackless is a leading Canadian manufacturer of off-road, multi-purpose tractors and attachments. Ground Force and TowHaul are leading manufacturers of specialty vehicles that support the extraction of metals. TBEI includes a portfolio of regional dump truck body and trailer brands with market leadership positions in distinct geographies and product categories, differentiating itself with its broad regional distribution network, focus on customer responsiveness and operational expertise.

Within specific product categories and domestic markets, the businesses within the Safety and Security Systems Group are among the market leaders. This Group’s international market position varies from leader to ancillary participant depending on the geographic region and product line. Generally, competition is intense within all of this Group’s product lines and purchase decisions are made based on price, features, reputation, performance and service, often within competitive bidding situations.

Patents and Trademarks

The Company owns a number of patents and possesses rights under others to which it attaches importance, but it does not believe that its business as a whole is materially dependent upon any such patents or rights. The Company also owns a number of trademarks, including those listed within the “Narrative Description of Business” section above. We believe these trademarks are important in connection with the identification of our products and associated goodwill with customers, but no material part of the Company’s business is dependent on our trademarks.

Human Capital Management

As of December 31, 2023, the Company employed approximately 4,500 people in its businesses located in five countries, with the Company’s U.S. hourly employees accounting for approximately 54% of its total workforce. As of December 31, 2023, approximately 9% of the Company’s U.S. hourly workers were represented by unions.

The Company believes that its employees are key to its ability to deliver exceptional products and services to its customers. The Company applies a holistic total rewards strategy, designed to recruit, motivate, and retain talented employees at all levels of the organization and offer competitive, market-based compensation programs and attractive benefit packages.

Human Rights

The Company is committed to respecting and upholding the internationally recognized human rights principles of the United Nations’ Guiding Principles on Business and Human Rights and the Universal Declaration of Human Rights. In every state and country where the Company operates, it upholds standards that meet or exceed those established by local, state, and national legal frameworks, and the Company expects its partners, suppliers, vendors, and contractors to do the same. The Company has published a human rights policy, setting forth its commitment to equality and nondiscrimination, elimination of all forms of forced or compulsory labor, the effective abolition of childhood labor, workers’ rights to freedom of association and unionization, and protecting employees’ ability to confidentially report policy violations.

Cultural Philosophy

The Company is committed to promoting and supporting an inclusive culture throughout the organization, and believes that hearing different voices, and seeking different perspectives and ideas, leads to better results. The Company is proud of the diversity on its Board of Directors, senior management and in leadership roles throughout the Company. Currently, two of the

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Company’s eight directors self-identify as members of a minority group.

In addition, three of the Company’s directors are female, placing the Company ahead of the 29% average for companies in the Russell 3000 Index. Of the companies in the Russell 3000 Index, approximately 7% have a female Chief Executive Officer (“CEO”), and the Company is proud to be among that group. In addition, 50% of the Company’s current executive officers are female, including the Company’s President and CEO, Vice President and General Counsel, and Vice President, Chief Accounting Officer and Controller.

The Company’s cultural philosophy is further evidenced by its policies related to various aspects of employment, including, but not limited to, recruiting, selecting, hiring, employment placement, job assignment, compensation, access to benefits, selection for training, use of facilities, and participation in Company-sponsored employee activities. In recent years, the Company’s Executive Leadership Team, comprised of business leaders from across the organization, completed a comprehensive educational awareness training led by an industry expert and completed supplemental training on the importance of building inclusive workplaces. Additionally, the Company piloted training at a key manufacturing location in 2022 and provided facilitated training at another key manufacturing location in 2023.

Employee Recruitment, Training and Development

The Company believes that identifying and developing the next generation of business leaders is important to its long-term success, and is proud to support its employees in furthering their education with tuition reimbursement programs and training.

The Company’s recruitment program follows a defined process to attract and hire top talent, including a college internship program designed to identify and cultivate an early-in-career pipeline of talent, and employee referral bonus programs. The Company additionally engages external professional recruiting firms to supplement its internal recruiting efforts, as needed.

The Company provides extensive training to employees within its facilities, ranging from topics such as workplace safety, anti-fraud, anti-discrimination and anti-harassment training, to advanced instruction in lean manufacturing principles and inside sales training programs. On average, the Company’s employees each receive more than 10 hours of job training per year, with some employees of certain business units each averaging nearly 80 hours of training per year.

Through its Tuition Assistance Program, the Company also aims to assist and encourage employees to expand their knowledge, skills, and job effectiveness by continuing their education at local accredited institutions of higher learning. Certain of the Company’s businesses also partner with nearby universities, from time to time, to offer courses and programs directly related to the employee’s growth in the business.

The Company maintains a robust annual performance management process across the organization. Employees start the process by working with their supervisors to set individual performance goals. Progress against those objectives is tracked throughout the year, culminating in the year-end performance review process, which involves the completion of an employee self-assessment and a discussion between the employee and their supervisor on goal accomplishment and defined core competencies. In addition, the Company’s annual talent and succession management processes are designed to identify and develop next-level successors through a variety of assignments and experiential learning.

The Company actively seeks opportunities for regular engagement and communication with its CEO and other senior executive leaders with its broader employee population. In addition, many of the Company’s businesses perform employee engagement surveys that provide valuable feedback to the management teams.

The Company is committed to the communities in which it operates, and to developing a strong pipeline from which it can recruit new talent. Many of the Company’s businesses support their local high schools with cooperative learning extension programs at their manufacturing plants, hosting in-person or virtual tours of our facilities, and providing scholarships and “signing-day” offers to high school seniors. The Company’s employees raise funds and donate time to a variety of community engagement initiatives and support expanded outreach to diverse communities.

The Company’s employees also donate time and expertise through volunteering and mentorship programs, and work with local colleges on training programs to teach valuable technical skills that can be applied in the workplace. Many of the Company’s businesses also recruit summer interns from regional universities, providing hands-on experience in a manufacturing setting and building a pipeline for future engineers, information technology (“IT”) specialists and financial analysts. These programs attempt to help the Company’s next generation, and others, understand what career paths may be available to them and to explore future job opportunities with the Company.

Safety

The Company considers the safety of its employees a significant focus and strives to have zero workplace injuries. The Company has established an enterprise-wide Safety Council, which includes representatives from several of our manufacturing facilities. The Safety Council meets regularly to collaborate and implement safety improvement measures, including workplace hazard reduction programs and awards focusing on continuous improvement initiatives and the reduction of incident frequency.

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Governmental Regulation of the Environment

The Company endeavors to establish environmentally-friendly policies and objectives, and believes that these actions are also consistent with cost-effective operating practices. With the application of these policies, the Company believes it complies with federal, state and local provisions that have been enacted or adopted regulating the discharge of materials into the environment, or otherwise relating to the protection of the environment. Capital expenditures in 2023 attributable to compliance with such laws were not material. The Company also believes that the overall impact of compliance with environmental regulations will not have a material adverse effect on our financial position, results of operations or cash flow.

Seasonality

Certain of the Company’s businesses are susceptible to the influences of seasonal factors, including buying patterns, delivery patterns and productivity influences from holiday periods and weather. In general, the Company tends to have lower equipment sales in the first calendar quarter of each year compared to other quarters as a result of these factors. In addition, rental income and parts sales are generally higher in the second and third quarters of the year, because many of the Company’s products are used for maintenance activities in North America, where usage is typically lower during periods of harsher weather conditions.

Executive Officers of the Registrant

The following is a list of the Company’s executive officers, including their ages, business experience and positions as of February 1, 2024:

Jennifer L. Sherman, age 59, was appointed President and CEO effective January 1, 2016. Ms. Sherman was also appointed to the Board of Directors effective January 1, 2016. Since joining the Company in 1994, Ms. Sherman has served in various roles of increasing responsibility, most recently as Senior Vice President and Chief Operating Officer from April 2014 to December 31, 2015. Ms. Sherman also previously served as Senior Vice President, Chief Administrative Officer, General Counsel and Secretary from 2010 to April 2014, Senior Vice President, Human Resources, General Counsel and Secretary from 2008 to 2010, and Vice President, General Counsel and Secretary from 2004 to 2008.

Felix M. Boeschen, age 29, was appointed Vice President, Corporate Strategy and Investor Relations in September 2023. Prior to joining the Company, Mr. Boeschen served as a Vice President, Equity Research at Raymond James, where he covered companies in the machinery space, with a primary focus on the truck equipment and specialty vehicle industries.

Diane I. Bonina, age 60, was appointed Vice President, General Counsel and Secretary in April 2022. Prior to joining the Company in March 2022, Ms. Bonina worked at AT&T Inc. (“AT&T”), where she served as Assistant Vice President – Senior Legal Counsel. At AT&T, Ms. Bonina held a broad range of roles of increasing legal and management responsibilities since 1996, both for AT&T and its predecessor companies. Prior to that role, Ms. Bonina worked as an attorney with Jenner & Block in its litigation department from 1990 to 1996, and also served as a law clerk for the Honorable Cornelia G. Kennedy of the U.S. Court of Appeals for the Sixth Circuit in Detroit, Michigan.

Lauren B. Elting, age 42, was appointed Vice President and Chief Accounting Officer in April 2022. Ms. Elting also serves as the Company’s Corporate Controller, a position she has held since May 2018. Prior to joining the Company in January 2017, Ms. Elting worked at Ernst & Young, LLP from 2004 to 2016, most recently as Senior Audit Manager.

Ian A. Hudson, age 47, was appointed Senior Vice President and Chief Financial Officer in October 2017. Mr. Hudson joined the Company in August 2013 as Vice President and Corporate Controller. Prior to joining the Company, Mr. Hudson served as Director of Accounting – Latin America and Asia Pacific at Groupon, Inc. from June 2012 to August 2013. Prior to that role, Mr. Hudson worked at Ernst & Young, LLP from 1998 to 2012, most recently as Senior Audit Manager.

Mark D. Weber, age 66, was appointed Senior Vice President and Chief Operating Officer in January 2018, upon rejoining the Company after four years at Supreme Industries, Inc. (“Supreme”). Mr. Weber joined Supreme in May 2013 as President and Chief Executive Officer, serving in that capacity up to the sale of Supreme to Wabash National Corporation, which was completed in September 2017. Prior to joining Supreme, Mr. Weber worked for 17 years as an executive within the Company’s Environmental Solutions Group, including a decade as Group President.

These officers hold office until the next annual meeting of the Board of Directors following their election and until their successors have been elected and qualified.

There are no family relationships among any of the foregoing executive officers.

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Item 1A. Risk Factors.

We may occasionally make forward-looking statements and estimates such as forecasts and projections of our future performance or statements of our plans and objectives. These forward-looking statements may be contained in, but are not limited to, filings with the SEC, including this Form 10-K, press releases made by us and oral statements made by our officers. Actual results could differ materially from those contained in such forward-looking statements. Important factors that could cause our actual results to differ from those contained in such forward-looking statements include, but are not limited to, the risks described below.

Macroeconomic and Industry Risks

Our financial results are subject to U.S. economic uncertainty and compliance with laws and regulations.

In 2023, we generated approximately 78% of our net sales in the U.S. Our ability to be profitable depends heavily on varying conditions in the U.S. governmental and municipal markets, as well as the overall U.S. economy. The industrial markets in which we compete are subject to considerable cyclicality, and move in response to cycles in the overall business environment. Many of our customers are municipal government agencies, and as a result, we are dependent on municipal government spending. Spending by our municipal customers can be affected by federal, state and local political circumstances, budgetary constraints, changing priorities, actual or potential government shutdowns and other factors. The U.S. government and municipalities depend heavily on tax revenues as a source of spending and accordingly, there is a historical correlation that suggests a lag of one to two years between the condition of the U.S. economy and our sales to the U.S. government and municipalities. Therefore, downturns in the U.S. economy are likely to result in decreases in demand for our products. During previous economic downturns, we experienced decreases in sales and profitability, and we expect our business to remain subject to similar economic fluctuations in the future. In addition, the extent of any potential changes to policies, tax laws and regulations and how any such changes may impact the Company’s financial results and operations, is currently uncertain. For example, the Organization for Economic Co-operation and Development has issued Pillar Two model rules introducing a new global minimum corporate tax of 15% intended to be effective on January 1, 2024. While the U.S. has not yet adopted the Pillar Two rules, various non-U.S. governments are enacting legislation. As currently designed, Pillar Two would apply to our worldwide operations. We currently do not expect these rules to materially increase our global tax costs because we do not have material operations in jurisdictions with tax rates lower than the Pillar Two minimum. We continue to monitor U.S. and global legislative action related to Pillar Two for potential impacts.

Government administrations and agencies, political figures, the investment community, employees and other stakeholders have had an increased focus on sustainability issues and initiatives. Regulatory and other legal changes in laws in response to such matters could require material efforts and costs by us, and our suppliers, to comply with such changes. The costs of compliance with the various laws, regulations and policies applicable to us could be significant and penalties for non-compliance could significantly impact our business.

We have international operations that are subject to compliance with domestic and foreign laws and regulations, economic and political uncertainties and conflicts and foreign currency rate fluctuations.

Our business is subject to fluctuations in demand and changing international economic, legal and political conditions that are beyond our control. In 2023, approximately 22% of our net sales were to customers outside the U.S. and we expect a significant portion of our revenues to come from international sales in the foreseeable future. Operating in the international marketplace exposes us to a number of risks, including the need to comply with U.S. and foreign laws and regulations applicable to our foreign operations, such as the Foreign Corrupt Practices Act, the United Kingdom (“U.K.”) Bribery Act and their counterparts in other foreign jurisdictions in which we operate, restrictive domestic and international trade regulations, and changes in these laws, regulations and policies by the U.S. and foreign governments. In addition, we may be exposed to risks and adverse economic effects associated with changes in tax laws, geopolitical conflicts, actual or threatened imposition of tariffs or trade barriers on our products or materials incorporated into our products, actual or threatened trade disputes, including so-called “trade wars,” political and economic instability in the jurisdictions in which we operate, foreign receivables collection risk and local labor market conditions.

To the extent that our international operations are affected by adverse foreign economic or political conditions, we may experience disruptions and losses that could have a material impact on our financial position, results of operations or cash flow. To mitigate the risk of foreign receivables collection, we may obtain letters of credit from international customers to satisfy concerns regarding the collectability of amounts billed to customers.

Some of our contracts are denominated in foreign currencies, which may expose us to risks of fluctuating currency values and exchange rates, hard currency shortages and controls on currency exchange. Changes in the value of foreign currencies over the long term could increase our U.S. dollar costs for, or reduce our U.S. dollar revenues from, our foreign operations. Any increased costs or reduced revenues as a result of foreign currency fluctuations could adversely affect our results of operations.

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Inflation in the United States and elsewhere could adversely affect our business.

We are exposed to inflation effects, which could negatively affect our business, financial condition and results of operation. The United States and other jurisdictions have experienced high levels of inflation in recent years. If the inflation rate increases, it will likely affect our expenses, including, but not limited to, employee compensation and labor expenses and increased costs for supplies, and we may not be successful in offsetting such cost increases through pricing actions.

The execution of our growth strategy is dependent upon the continued availability of credit and third-party financing arrangements for our customers.

Economic downturns result in tighter credit markets, which could adversely affect our customers’ ability to secure financing or to secure financing at favorable terms or interest rates necessary to proceed or continue with purchases of our products and services. Further, certain government agencies, including the U.S. Treasury, have previously implemented and may continue to implement policies that have resulted and may continue to result in significantly increased interest rates and borrowing costs. Our customers’ or potential customers’ inability to secure financing for projects could result in the delay, cancellation or downsizing of new purchases or the suspension of purchases already under contract, which could cause a decline in the demand for our products and services and negatively impact our financial position, results of operations or cash flow.

We operate in highly competitive markets.

The markets in which we operate are highly competitive. Many of our competitors have significantly greater financial resources than we do. The intensity of this competition, which is expected to continue, can result in price discounting and margin pressures throughout the industry and may adversely affect our ability to increase or maintain prices for our products. In addition, certain of our competitors may have lower overall labor or material costs. In some cases, our contracts with municipal and other governmental customers are awarded and renewed through competitive bidding. We may not be successful in obtaining or renewing these contracts, which could have an adverse effect on our financial condition, results of operations or cash flow.

Strategic and Operational Risks

The inability to obtain raw materials, component parts and/or finished goods in a timely and cost-effective manner would adversely affect our ability to manufacture and market our products.

We purchase from suppliers raw materials, component parts and finished goods to be used in the manufacturing and sale of our products. In addition, we may incorporate vehicle chassis provided directly by our customers in our production process. Although the vast majority of our raw materials and component parts are sourced domestically, certain of our suppliers are based overseas, and certain of our domestic suppliers may source subcomponents from overseas. Global markets for various products and goods have suffered, and are continuing to suffer, material disruptions to certain supply chains, in part due to the coronavirus pandemic and geopolitical conflicts, including the war between Russia and Ukraine and the war between Israel and Hamas. Changes in our relationships with suppliers, shortages in availability of materials, production delays, regulatory restrictions, public health crises, labor stoppages or other supply chain disruptions, whether due to our suppliers or customers, could have a material adverse effect on our ability to timely manufacture and deliver products to our customers. In addition, our profit margins would decrease if prices of purchased raw materials, component parts or finished goods increase and we are unable to pass on those increases to our customers.

Challenges within global logistics networks, including trucking and chassis shortages and shortages in labor availability, have also contributed to delays in receiving key manufacturing components, increased order backlogs and higher transportation costs. Such logistical disruption may cause us to incur higher freight costs to expedite the receipt of components from our suppliers or the delivery of products to our customers, and may also result in longer lead times for our customers.

As economies around the world recovered following the most significant effects of the pandemic, sharp increases in demand created significant disruption to the global supply chain, which adversely affected our ability to receive goods on a timely basis and increased our material costs. Throughout 2023, supply chain conditions have continued to gradually improve. However, we continue to experience supply shortages and extended lead times for some components and raw materials, including certain classes of chassis and electronic components that are important to our manufacturing processes. When facing supply-related challenges, we may increase our inventory levels and purchase commitments to shorten lead times and to help maintain adequate inventory levels to meet customer expectations. While we actively monitor and take steps in an effort to mitigate supply chain risk, there can be no assurance that our ongoing mitigation plans will prevent disruptions that may arise from shortages of materials that we use in the production of our products.

Global supply chain disruptions may continue to adversely affect our business and our outlook. If we are unable to recover a substantial portion of the increase in material and transportation costs from our customers through price adjustments and/or

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surcharges, our business or results of operations could be adversely affected. We may also experience an increase in order cancellations if any such pricing actions are not accepted by our customers.

Failure to keep pace with technological developments may adversely affect our operations.

We are engaged in an industry that will be affected by future technological developments. The introduction of products or processes utilizing new technologies, including those resulting from any new environmental, safety and other regulations, artificial intelligence and machine learning, could require us and our suppliers to make significant changes to existing products or processes in order for them to remain marketable and competitive. Our success will depend upon our ability to source, develop and introduce on a timely and cost-effective basis new products, applications and processes that keep pace with technological developments, applicable regulations and address increasingly sophisticated customer requirements. We may not be successful in identifying, sourcing, developing and marketing new products, applications and processes and product or process enhancements. Further, if we implement emerging technologies such as artificial intelligence and machine learning into our products and services, we may not be able to anticipate vulnerabilities, flaws or security threats resulting from the use of such technology and develop adequate protection measures. We may experience difficulties that could delay or prevent the successful development, introduction and marketing of product or process enhancements or new products, applications or processes. Our products, applications or processes may not adequately meet the requirements of the marketplace and achieve market acceptance. Our financial condition, results of operations or cash flow could be materially and adversely affected if we or our suppliers were to incur delays in developing new products, applications or processes or product or process enhancements, or if our products do not gain market acceptance.

Our efforts to develop new products and services or enhance existing products and services involve substantial research, development and marketing expenses, and the resulting new or enhanced products or services may not generate sufficient revenues to justify the expense.

We place a high priority on developing new products and services, as well as enhancing our existing products and services. As a result of these efforts, we may be required to expend substantial research, development and marketing resources, and the time and expense required to develop a new product or service or enhance an existing product or service are difficult to predict. We may not succeed in developing, introducing or marketing new products or services or product or service enhancements. In addition, we cannot be certain that any new or enhanced product or service will generate sufficient revenue to justify the expense and resources devoted to the related product diversification effort.

Disruptions within our dealer network or the inability of our dealers to secure adequate access to capital could adversely affect our business.

We rely on national and global dealer networks to market certain of our products and services. As a result, our business with respect to these products and services is influenced by our ability to manage new and existing relationships with dealers. While we have relatively low turnover of dealers, from time to time, we or a dealer may choose to terminate the relationship as a result of difficulties that our dealers experience in operating their businesses due to economic conditions or other factors. While we do not believe our business is dependent on any single dealer, a disruption in our dealer network, or with a significant dealer, or within a specific market, could have an adverse impact on our business within the affected market. In addition, our dealers require adequate liquidity to finance their operations, including purchases of our products. Dealers are subject to numerous risks and uncertainties that could unfavorably affect their liquidity positions, including, among other things, continued access to adequate financing sources on a timely basis on reasonable terms. These sources of financing are vital to our ability to sell products through our dealer network. Recent significant increases in interest rates and any future deterioration in the liquidity or credit worthiness of our dealers could have a significant adverse effect on our business. From time to time, we may provide financing assistance to dealers or consider taking ownership positions. The loss or termination of a significant dealer, or a significant number of dealers, could cause difficulties in marketing and distributing our products and have an adverse effect on our business, financial condition, results of operations or cash flow.

We may be unsuccessful in our future acquisitions, if any, which may have an adverse effect on our business.

Our long-term strategy includes exploring acquisitions of companies or businesses to facilitate our growth, enhance our global market position and broaden our product offerings. Such acquisitions may help us expand into adjacent markets, add complementary products and services or allow us to leverage our distribution channels. In connection with this strategy, we could face certain risks and uncertainties in addition to those we face in the day-to-day operations of our business. We also may be unable to identify suitable targets for acquisition or to make acquisitions at favorable prices. If we identify a suitable acquisition candidate, our ability to successfully implement the acquisition would depend on a variety of factors, including our ability to obtain financing on acceptable terms, especially with interest rates at comparatively high levels. In addition, our

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acquisition activities could be disrupted by overtures from competitors for the targeted companies, governmental regulation and rapid developments in our industry that decrease the value of a potential target’s products or services.

Acquisitions involve risks, including those associated with the following:

•integrating the operations, financial reporting, disparate systems and processes and personnel of acquired companies;

•managing geographically dispersed operations;

•diverting management’s attention from other business concerns;

•changing the competitive landscape, including disrupting existing sales channels or markets;

•entering markets or lines of business in which we have either limited or no direct experience; and

•losing key employees, customers and strategic partners of acquired companies.

We also may not achieve anticipated revenue and cost benefits associated with our acquisitions. Acquisitions may not be accretive to our earnings and may negatively impact our results of operations as a result of, among other things, the incurrence of debt, acquisition costs, impairment of goodwill and amortization of other intangible assets. In addition, future acquisitions could result in dilutive issuances of equity securities.

Businesses acquired by us may have liabilities that are not known to us.

We may assume liabilities in connection with the acquisition of businesses. There may be liabilities that we fail or are unable to discover in the course of performing due diligence investigations on the acquired businesses, or that may be more material than we expected. In these circumstances, we cannot assure that our rights to indemnification will be sufficient in amount, scope or duration to fully offset the possible liabilities associated with the businesses or property acquired. Further, these liabilities could result in unexpected legal or regulatory exposure, unexpected increases in taxes or other adverse effects on our business. Any such liabilities, individually or in the aggregate, could have a material adverse effect on our financial condition, results of operations or cash flow.

We could incur restructuring and impairment charges as we continue to evaluate opportunities to restructure our business and rationalize our manufacturing operations in an effort to optimize our cost structure.

We continue to evaluate opportunities to restructure our business and rationalize our manufacturing operations in an effort to optimize our cost structure. These actions could result in significant charges that could adversely affect our financial condition and results of operations. Future actions could result in restructuring and related charges, including but not limited to impairments, employee termination costs and charges for pension and other postretirement contractual benefits and pension curtailments that could be significant and could have an adverse effect on our financial condition, results of operations or cash flow.

Indebtedness Risk

We are subject to a number of restrictive debt covenants.

Our credit facility contains certain restrictive debt covenants and customary events of default. Our ability to comply with these restrictive covenants may be affected by the other factors described in this “Risk Factors” section, as well as other factors outside of our control. Failure to comply with one or more of these restrictive covenants may result in an event of default which, if not cured by us or waived by our lenders, allows our lenders to declare all amounts outstanding as due and payable. Such an acceleration of the maturity of our indebtedness may cause us to incur substantial costs and may prevent or limit us from engaging in transactions that benefit us, including responding to changing business and economic conditions and taking advantage of attractive business opportunities.

Human Capital and Labor Risks

Our ability to operate effectively could be impaired if we fail to attract and retain key personnel.

Our ability to operate our businesses and implement our strategies depends in part on the efforts of our executive officers and other key employees. In addition, our future success will depend on, among other factors, our ability to attract and retain qualified personnel. The loss of the services of any key employee or the failure to attract or retain other qualified personnel could have a material adverse effect on our business or business prospects.

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Additionally, availability of labor in the markets in which we operate has declined in recent years and competition for such labor has increased. A significant increase in wages paid by competitors for employees similar to our work force could result in insufficient availability of workers and/or increase our labor costs. In the event prevailing wage rates continue to increase in the markets in which we operate, we may be required to concurrently increase the wages paid to our employees to maintain the quality of our work force and customer service. If the supply of skilled labor is constrained or our costs of attracting and maintaining a workforce increase, our profit margins could decrease as well as our ability to maximize production and meet customer demand.

Our business may be adversely impacted by work stoppages and other labor relations matters.

As a portion of our workforce is unionized, we are subject to risk of work stoppages and other labor relations matters. As of December 31, 2023, approximately 9% of our U.S. hourly workers were represented by labor unions and were covered by collective bargaining agreements with various unions. Any strikes, threats of strikes or other organized disruptions in connection with the negotiation of new labor agreements or other negotiations could materially adversely affect our business as well as impair our ability to implement further measures to reduce costs and improve production efficiencies. In addition, the stoppage of work for a prolonged period of time at one, or several, of our principal manufacturing facilities, due to public health concerns, or any other reason, could materially adversely affect our business.

Our pension funding requirements and expenses are affected by certain factors outside of our control, including the performance of plan assets, the discount rate used to value liabilities, actuarial assumptions and experience and legal and regulatory changes.

Our funding obligations and pension expense for our defined benefit pension plans are driven by the performance of assets set aside in trusts for these plans, the discount rate used to value the plans’ liabilities, actuarial assumptions and experience and legal and regulatory funding requirements. Changes in these factors could have an adverse impact on our financial condition, results of operations or cash flow. In addition, a portion of our pension plan assets are invested in equity securities, which can experience significant declines if financial markets weaken. The level of the funding of our defined benefit pension plan liabilities was approximately 88% as of December 31, 2023. Funding of the Company’s U.S. defined benefit pension plan is determined in accordance with guidelines set forth in the Employee Retirement Income Security Act. Our future pension expenses and funding requirements could increase significantly due to the effect of adverse changes in the discount rate, asset values or the estimated expected return on plan assets. In addition, we could become legally required to make increased cash contributions to the pension plans, and these contributions could be material and negatively affect our cash flow.

Data Security and Intellectual Property Risks

Increased IT security threats, including more sophisticated cybersecurity attacks, pose a risk to our systems, networks, products and operations.

We rely upon IT systems and networks, some of which are managed by third parties, to support a variety of business processes and activities, and to comply with regulatory, legal and tax requirements. Additionally, in the ordinary course of business, we collect and store sensitive information relating to our businesses, customers, suppliers and employees. Sensitive information may also be stored by our vendors and on the platforms and networks of third-party providers. The secure operation of these IT systems and networks and processing and maintenance of this information is critical to the Company’s business operations and strategy.

These IT systems and networks may be susceptible to damage, disruptions or shutdowns due to hardware failures, computer viruses, cybersecurity attacks, telecommunication failures, user errors, catastrophic events or other factors. Further, IT security threats are growing in frequency and sophistication. Accordingly, we have implemented and continue to implement measures to address cybersecurity incidents and mitigate potential risks to our systems from these IT-related disruptions. Despite the information security measures we have taken, our systems and networks remain potentially vulnerable to cybersecurity incidents, as do those of our vendors and third-party providers. Cybersecurity incidents with respect to the Company, our vendors or our third-party providers could potentially result in the compromising of confidential information, misuse of our systems and networks, manipulation and destruction of data, misappropriation of assets or production stoppages and supply shortages, which in turn could adversely affect our reputation, financial condition, results of operations or cash flow.

Although we have not suffered any significant cybersecurity incidents that have had a material business impact, we and our vendors have been the target of malicious cybersecurity threats and attacks. While various procedures and controls have been and are being utilized to mitigate IT risks, there can be no guarantee that the actions and controls that we and our third-party providers have implemented will be sufficient to protect our systems, information or other property.

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Infringement of, or an inability to protect, our intellectual property rights could adversely affect our business.

We rely on a combination of patents, trademarks, copyrights, nondisclosure agreements, IT security systems, physical security and other measures to protect our proprietary intellectual property and the intellectual property of certain customers and suppliers. However, we cannot be certain that our efforts to protect these intellectual property rights will be sufficient. Intellectual property protection is subject to applicable laws in various jurisdictions where interpretations and protections differ or can be unpredictable and costly to enforce. Further, our ability to protect our intellectual property rights may be limited in certain foreign jurisdictions that do not have, or do not enforce, strong intellectual property rights. Any failure to protect or enforce our intellectual property rights could have a material adverse effect on our competitive position, financial condition, results of operations or cash flow.

Legal and Financial Risks

We may incur material losses and costs as a result of lawsuits or claims that may be brought against us which are related to product liability, warranty, product recalls, intellectual property, client service interruptions or other matters.

We are exposed to product liability and warranty claims in the normal course of business in the event that our products actually or allegedly fail to perform as expected, or the use of our products results, or is alleged to result, in bodily injury and/or property damage. For example, we have been sued by firefighters seeking damages claiming that exposure to our sirens has impaired their hearing and that the sirens are, therefore, defective. In addition, we are subject to other claims and litigation from time to time, as further described in the accompanying notes to our consolidated financial statements. We could experience material product liability or warranty costs in the future and incur significant costs to defend ourselves against these claims. While we carry insurance and maintain reserves for product liability claims, our insurance coverage may be inadequate if such claims do arise, and any defense costs and liability not covered by insurance could have a material adverse impact on our financial condition, results of operations or cash flow. A future claim could involve the imposition of punitive damages, the award of which, pursuant to state laws, may not be covered by insurance. In addition, warranty and certain other claims are not typically covered by insurance. Any product liability or warranty issues may adversely impact our reputation as a manufacturer of high-quality, safe products and may have a material adverse effect on our business.

The costs associated with complying with environmental, safety and other regulations could lower our margins.

We, like other manufacturers, continue to face heavy governmental regulation of our products, especially in the areas of the environment and employee health and safety. Increased public awareness and concern regarding climate change and other related matters at numerous levels of government in various jurisdictions may lead to additional international, national, regional and local legislative and regulatory responses, and compliance with any new rules could be difficult and costly. These regulations could include environmental requirements applicable to manufacturing and vehicle emissions and regulations impacting our supply chain both nationally and internationally. Complying with environmental, safety and other regulations has added and will continue to add to the cost of our products, could increase the capital required to support our business and could affect the products and services that we offer. While we believe that we are in compliance in all material respects with these laws and regulations, we may be adversely impacted by costs, liabilities or claims with respect to our operations under existing laws or those that may be adopted. These requirements are complex, change frequently and have tended to become more stringent over time. Therefore, we could incur substantial costs, including cleanup costs, fines and civil or criminal sanctions as a result of violation of, or liabilities under, environmental laws and safety regulations. Further, climate change regulations at the federal, state or local level or in international jurisdictions could require us to limit emissions, change our manufacturing processes or product offerings, or undertake other activities which may require us to incur additional expense. These requirements may increase the cost of our products, which may diminish demand for those products. Additionally, uneven application of environmental, safety and other regulations could place our products at a cost or features disadvantage, which could reduce our revenues and profitability.

An impairment in the carrying value of goodwill, intangible assets or long-lived assets could negatively affect our financial position and results of operations.

As of December 31, 2023, goodwill and intangible assets represented 29% and 13% of total consolidated assets, respectively. Rental equipment and properties and equipment are long-lived assets, which also collectively represented 20% of our total consolidated assets as of December 31, 2023. Goodwill and indefinite-lived intangible assets are tested for impairment annually, or more frequently if indicators of impairment exist. Definite-lived intangible assets and long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. In evaluating the potential for impairment of goodwill, intangible assets and long-lived assets, we make assumptions regarding future operating performance, business trends, competition and market and general economic conditions. Such analyses further require us to make certain assumptions about our sales, operating margins, growth rates and discount rates. There are inherent uncertainties related to these factors. An impairment charge may result from, among other things, a

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significant decline in operating results, adverse market conditions, unfavorable changes in applicable laws or regulations, or a variety of other factors. Our total consolidated assets and results of operations for the applicable period could be materially adversely affected if any such charge is recorded.

Item 1B. Unresolved Staff Comments.

None.

Item 1C. Cybersecurity

The Company does not believe that there are currently any known risks from cybersecurity threats that have materially affected or are reasonably likely to materially affect the Company’s business strategy, results of operations, or financial condition. However, the Company could face risks from cybersecurity threats in the future that could have a material adverse effect on its business strategy, results of operations, or financial condition. For more information on the Company’s cybersecurity-related risks, see Item 1A, Risk Factors of this Form 10-K.

Risk Management and Strategy

The Company’s processes for identifying, assessing, and managing material cybersecurity risks are incorporated into its overall Enterprise Risk Management process. The Company maintains a comprehensive cybersecurity risk management program, overseen by the Chief Information Officer (“CIO”) and Chief Information Security Officer (“CISO”), to support the security, confidentiality, integrity and availability of its critical information technology (“IT”) systems and information.

The Company conducts internal risk assessments, with the assistance of independent third parties, against standards including the National Institute of Standards and Technology Cybersecurity Framework. The assessment results are used to develop responsive cybersecurity controls and risk mitigation strategies. The Company’s cybersecurity risk management program provides the structure for managing the respective risks through the use of a combination of automated tools, technologies and third-party monitoring, as well as ongoing employee education via cybersecurity training and security awareness communications.

The Company’s cybersecurity risk management program includes an incident response plan, which provides a documented framework to support the timely and effective resolution of actual or attempted cybersecurity incidents. Cybersecurity incidents across the Company, and relevant third-party service providers, are tracked and significant incidents, as applicable, are promptly escalated to a cross-functional cybersecurity task force so that decisions regarding public disclosure can be made in a timely manner by management and the Board of Directors.

The Company’s Internal Audit function performs audits to evaluate and report on compliance with cybersecurity policies and procedures, reviews internal control certifications from relevant third-party service providers, and tests IT system and network controls as part of its annual assessment of the effectiveness of the Company’s internal controls. Additionally, the Company engages third-party specialists to conduct periodic tests, incident simulations and assessments to verify and continuously enhance its cybersecurity risk management program.

Governance

The Board of Directors has overall responsibility for the oversight of risk management, and has delegated oversight of cybersecurity risk management to the Audit Committee. The Company’s CIO and CISO regularly report to the Audit Committee on cybersecurity risks, updates on key initiatives and progress toward the Company’s objectives. In addition, the CIO provides updates to the Board of Directors, at least annually, on the Company’s broader IT strategy and key initiatives.

The CIO and CISO have primary responsibility over the Company’s cybersecurity risk management program. Quarterly updates are provided to the Company’s IT Council, comprised of executive, business unit and IT leaders from across the organization, regarding IT initiatives and risk management processes.

Item 2. Properties.

As of December 31, 2023, the Company utilized 17 principal manufacturing plants located throughout the U.S., as well as two in Europe, three in Canada and one in South Africa. The Company also leases facilities within the U.S., Europe and Canada from which we provide sales, service and/or equipment rentals. As of December 31, 2023, the Company devoted approximately 2.5 million square feet to manufacturing and 1.2 million square feet to sales, service, warehousing and office space. Of the total square footage, approximately 84% is devoted to the Environmental Solutions Group and 16% to the Safety and Security Systems Group. Approximately 63% of the total square footage is owned by the Company with the remaining 37% being leased. Owned facilities are subject to liens under the Company’s Third Amended and Restated Credit Agreement dated October 21, 2022 (the “2022 Credit Agreement”).

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The Company believes its properties, and related machinery and equipment, are well-maintained, suitable and adequate for their intended purposes. In the aggregate, these facilities are of sufficient capacity for the Company’s current business needs. However, the Company may make additional investments in certain facilities in the future in response to increased demand for the Company’s products.

Item 3. Legal Proceedings.

The information concerning the Company’s legal proceedings included in Note 13 – Legal Proceedings to the accompanying consolidated financial statements is incorporated herein by reference.

Item 4. Mine Safety Disclosures.

Not applicable.

PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

Market Information

The Company’s common stock is listed and traded on the New York Stock Exchange under the symbol “FSS”.

Holders

As of January 31, 2024, there were 1,463 holders of record of the Company’s common stock.

Securities Authorized for Issuance under Equity Compensation

Information concerning the Company’s equity compensation plans is included under Item 12 of Part III of this Form 10-K.

Recent Sales of Unregistered Securities

There were no sales of unregistered securities by the Company during the year ended December 31, 2023.

Purchases of Equity Securities

The following table provides a summary of the Company’s repurchase activity for its common stock during the three months ended December 31, 2023:

(a) In March 2020, the Board authorized a stock repurchase program of up to $75.0 million of the Company’s common stock, with the remaining

authorization under our previously described repurchase program adopted in 2014 being subject to the March 2020 program.

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Performance Graph

The following graph compares the cumulative five-year total return to stockholders of the Company’s common stock relative to the cumulative total returns of the Russell 2000 index, the S&P Midcap 400 index, the S&P Industrials index, and the S&P 600 Capital Goods index. The graph assumes that the value of the investment in the Company’s common stock, and in each index, was $100 on December 31, 2018 and assumes reinvestment of all dividends through December 31, 2023.

Copyright© 2024 Russell Investment Group. All rights reserved.

Copyright© 2024 Standard & Poor’s, a division of S&P Global. All rights reserved.

As of December 31,

The stock price performance included in this graph is not necessarily indicative of future stock price performance. Notwithstanding anything set forth in any of our previous filings under the Securities Act or the Exchange Act, which might be incorporated into future filings in whole or part, including this Form 10-K, the preceding performance graph shall not be deemed incorporated by reference into any such filings.

Item 6.[Reserved]

Not applicable.

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) is designed to provide information that is supplemental to, and shall be read together with, the consolidated financial statements and the accompanying notes contained in this Form 10-K. Information in MD&A is intended to assist the reader in obtaining an understanding of (i) the consolidated financial statements, (ii) the Company’s business segments and how the results of those segments impact the Company’s results of operations and financial condition as a whole and (iii) how certain accounting principles affect the Company’s consolidated financial statements.

Executive Summary

The Company is a leading global manufacturer and supplier of (i) vehicles and equipment for maintenance and infrastructure end-markets, including sewer cleaners, industrial vacuum loaders, safe-digging trucks, street sweepers, waterblasting equipment, road-marking and line-removal equipment, dump truck bodies, trailers, metal extraction support equipment and multi-purpose tractors, and (ii) public safety equipment, such as vehicle lightbars and sirens, industrial signaling equipment, public warning systems and general alarm/public address systems. In addition, we engage in the sale of parts, service and repair, equipment rentals and training as part of a comprehensive aftermarket offering to our customer base. We operate 23 manufacturing facilities in five countries and provide products and integrated solutions to municipal, governmental, industrial and commercial customers in all regions of the world.

As described in Note 17 – Segment Information to the accompanying consolidated financial statements, the Company’s business units are organized in two reportable segments: the Environmental Solutions Group and the Safety and Security Systems Group.

Operating and Financial Performance in 2023

Conditions in our end markets remained strong throughout 2023, with demand for our products and services at unprecedented levels. We continued to execute against our organic growth initiatives, and with contributions from our recent value-added acquisitions and additional efficiency gains resulting from the application of our eighty-twenty initiatives, we were able to sustain a high level of financial performance. As the year progressed, we saw improvement in supply chain conditions, which facilitated increased production levels at several of our facilities and, despite some lingering supply chain-related operational inefficiencies, we were able to deliver record financial results for our stockholders, with double-digit year-over-year top line and earnings growth, margin expansion and significant improvement in cash flow generation.

Included among the Company’s highlights in 2023 were the following:

•Orders for the year were at a record level of $1.87 billion, an increase of $178 million, or 11%, from last year.

•Backlog at December 31, 2023 was $1.03 billion, another Company record, and an increase of $146 million, or 17%, compared to the end of last year.

•Net sales for the year ended December 31, 2023 were $1.72 billion, the highest level in our history, and an increase of $288 million, or 20% from last year.

•For the year ended December 31, 2023, we reported operating income of $224.5 million, an increase of $63.7 million, or 40%, from last year.

•Consolidated operating margin for the year ended December 31, 2023 was 13.0%, compared to 11.2% in the prior year.

•For the year ended December 31, 2023, we reported net income of $157.4 million, an increase of $37.0 million, or 31%, from last year.

•On a consolidated basis, we reported adjusted EBITDA* of $286.0 million for the year ended December 31, 2023, an increase of $71.0 million, or 33%, from last year.

•Adjusted EBITDA margin* for the year ended December 31, 2023 was 16.6%, up from 15.0% last year.

•Cash flow from continuing operating activities for the year ended December 31, 2023 was $194 million, an increase of $123 million, or 171%, from last year.

•With our strong balance sheet, positive operating cash flow, and increased capacity under our credit facility, we are well positioned to continue to invest in internal growth initiatives, pursue strategic acquisitions and consider ways to return value to stockholders, as we did during 2023:

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◦Our capital expenditures in 2023 were approximately $30 million, and included a number of strategic investments in new machinery and equipment aimed at gaining operating efficiencies and expanding capacity at certain production facilities.

◦We continue to invest in new product development and are encouraged that these efforts will provide additional opportunities to further diversify our customer base, penetrate new end-markets and/or gain access to new geographic regions.

◦We continued to execute on our disciplined M&A strategy with the acquisitions of Blasters and Trackless. We have now completed 11 acquisitions since 2016.

◦We demonstrated our commitment to returning value to our stockholders by paying cash dividends of $23.8 million, and spending $5.5 million to repurchase shares under our authorized repurchase program.

•To highlight our ongoing focus on operating in a socially responsible and sustainable manner, we published our fourth annual Sustainability Report in June 2023.

*The Company uses adjusted earnings before interest, tax, depreciation and amortization (“adjusted EBITDA”) and the ratio of adjusted EBITDA to net sales (“adjusted EBITDA margin”) as additional measures which are representative of its underlying performance and to improve the comparability of results across reporting periods. Refer to the Results of Operations section for further discussion regarding these non-GAAP metrics and a reconciliation of each to the most comparable GAAP measure for each of the periods presented.

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Results of Operations

The following table summarizes our Consolidated Statements of Operations as of, and for the years ended, December 31, 2023, 2022 and 2021, and illustrates the key financial indicators used to assess our consolidated financial results:

For the Years Ended December 31, Change

Pension settlement charges — — 10.3 — (10.3)

Other expense (income), net 1.8 (0.4) (1.7) 2.2 1.3

Other data:

(a)The Company uses adjusted EBITDA and adjusted EBITDA margin as additional measures which are representative of its underlying performance and to improve the comparability of results across reporting periods. We believe that investors use versions of these metrics in a similar manner. For these reasons, the Company believes that adjusted EBITDA and adjusted EBITDA margin are meaningful metrics to investors in evaluating the Company’s underlying financial performance. Adjusted EBITDA is a non-GAAP measure that represents the total of net income, interest expense, pension settlement charges, acquisition and integration-related expenses (benefits), coronavirus-related expenses, purchase accounting effects, other income/expense, income tax expense, and depreciation and amortization expense, where applicable. Adjusted EBITDA margin is a non-GAAP measure that represents the total of net income, interest expense, pension settlement charges, acquisition and integration-related expenses (benefits), coronavirus-related expenses, purchase accounting effects, other income/expense, income tax expense, and depreciation and amortization expense, where applicable, divided by net sales for the applicable period(s). Other companies may use different methods to calculate adjusted EBITDA and adjusted EBITDA margin.

A discussion of changes in the Company’s financial condition and results of operations during the year ended December 31, 2022 compared to the year ended December 31, 2021 has been omitted from this Form 10-K, but may be found under the heading “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on March 1, 2023.

Year ended December 31, 2023 vs. year ended December 31, 2022

Net sales

Net sales for the year ended December 31, 2023 increased by $287.9 million, or 20%, compared to the prior year, inclusive of the effects of acquisitions, pricing actions and increased chassis sales. The Environmental Solutions Group reported a net sales increase of $247.3 million, or 21%, primarily due to a $66.2 million improvement in aftermarket revenues and increases in sales of street sweepers, sewer cleaners, refuse trucks, multi-purpose tractors, metal extraction support equipment, industrial vacuum loaders, safe-digging trucks, trailers and road-marking and line-removal equipment of $38.6 million, $35.0 million, $31.1 million, $21.4 million, $17.2 million, $16.3 million, $15.5 million, $10.5 million and $7.4 million, respectively. Partially offsetting these improvements was a reduction in sales of hoists and waterblasting equipment of $7.9 million and $5.1 million, respectively, as well as a $6.4 million unfavorable foreign currency translation impact. Within the Safety and Security Systems

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Group, net sales increased by $40.6 million, or 17%, primarily due to improvements in sales of public safety equipment, industrial signaling equipment and warning systems of $22.7 million, $11.0 million and $6.8 million, respectively.

Cost of sales

For the year ended December 31, 2023, cost of sales increased by $182.6 million, or 17%, compared to the prior year, largely due to an increase of $162.3 million, or 17%, within the Environmental Solutions Group, primarily related to increased sales volumes, inclusive of the effects of acquisitions, increased chassis costs and a $3.2 million increase in depreciation expense, partially offset by a $6.2 million favorable foreign currency translation impact. Within the Safety and Security Systems Group, cost of sales increased by $20.3 million, or 13%, primarily related to higher sales volumes, benefits from pricing actions and lower freight costs.

Gross profit

For the year ended December 31, 2023, gross profit increased by $105.3 million, or 31%, compared to the prior year, primarily due to a $85.0 million improvement within the Environmental Solutions Group and a $20.3 million increase within the Safety and Security Systems Group. Gross profit as a percentage of net sales (“gross profit margin”) for the year ended December 31, 2023 was 26.1%, compared to 24.0% in the prior year, primarily driven by improvements within the Environmental Solutions Group and Safety and Security Systems Group of 220 basis points and 180 basis points, respectively.

Selling, engineering, general and administrative (“SEG&A”) expenses

For the year ended December 31, 2023, SEG&A expenses increased by $38.4 million, or 22%, compared to the prior year, primarily due to increases of $16.8 million, $6.3 million and $15.3 million within the Environmental Solutions Group, the Safety and Security Systems Group and Corporate, respectively. As a percentage of net sales, SEG&A expenses increased from 12.0% in the prior year, to 12.2% in the current year.

Operating income

Operating income for the year ended December 31, 2023 increased by $63.7 million, or 40%, compared to the prior year, largely due to the $105.3 million improvement in gross profit, partially offset by the $38.4 million increase in SEG&A expenses, a $2.3 million increase in amortization expense and a $0.9 million increase in acquisition-related costs. Consolidated operating margin for the year ended December 31, 2023 was 13.0%, compared to 11.2% in the prior year.

Interest expense, net

Interest expense for the year ended December 31, 2023 increased by $9.4 million, or 91%, compared to the prior year, largely due to an increase in interest rates.

Other expense (income), net

For the year ended December 31, 2023, Other expense (income), net, increased by $2.2 million compared to the prior year, primarily due to a $1.0 million increase in net periodic pension expense, a $0.8 million increase in estimated environmental remediation costs associated with a business discontinued in 2009, and a $0.4 million increase in foreign currency transaction losses.

Income tax expense

The Company recognized income tax expense of $45.6 million for the year ended December 31, 2023, compared to $30.5 million for the year ended December 31, 2022. The increase in income tax expense in the current year was primarily due to higher earnings and the non-recurrence of certain discrete tax benefits recognized in the prior year associated with the release of valuation allowances, partially offset by a $1.5 million increase in the amount of excess tax benefits from stock compensation activity compared to the prior year. In the year ended December 31, 2022, the Company recognized a $2.6 million tax benefit from the release of a valuation allowance that had previously been recorded against deferred tax assets associated with foreign tax credits in the U.S., primarily due to tax planning. The Company also recognized a $1.1 million tax benefit during the year ended December 31, 2022 associated with the release of a valuation allowance in the U.K., as the associated deferred tax assets were considered more-likely-than-not to be realized primarily due to increased projections of future taxable income. Including these items, the Company’s effective tax rate for the year ended December 31, 2023 was 22.5%, compared to 20.2% in 2022. For further discussion, see Note 10 – Income Taxes to the accompanying consolidated financial statements.

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Net income

Net income for the year ended December 31, 2023 increased by $37.0 million, or 31%, compared to the prior year, largely due to the increased operating income, partially offset by increases in income tax expense, interest expense and other expense of $15.1 million, $9.4 million and $2.2 million, respectively.

Adjusted EBITDA

Adjusted EBITDA for the year ended December 31, 2023 was $286.0 million, compared to $215.0 million in the prior year. Adjusted EBITDA margin for the year ended December 31, 2023 was 16.6%, compared to 15.0% in the prior year.

The following table summarizes the Company’s adjusted EBITDA and adjusted EBITDA margin and reconciles net income to adjusted EBITDA for each of the three years in the period ended December 31, 2023:

For the Years Ended December 31,

Add (less):

Pension settlement charges — — 10.3

Acquisition and integration-related expenses (benefits), net 0.4 (0.5) (2.1)

Coronavirus-related expenses (a) — — 1.2

Purchase accounting effects (b) 0.7 — 0.3

Other expense (income), net 1.8 (0.4) (1.7)

(a)Coronavirus-related expenses relate to direct expenses incurred in connection with the Company's response to the coronavirus pandemic, that are incremental to, and separable from, normal operations. Such expenses primarily relate to incremental paid time off provided to employees and costs incurred to implement enhanced workplace safety protocols.

(b)Purchase accounting effects represent the step-up in the valuation of equipment acquired in recent business combinations that was sold during the periods presented.

Environmental Solutions

The following table summarizes the Environmental Solutions Group’s operating results as of, and for the years ended, December 31, 2023, 2022 and 2021:

For the Years Ended December 31, Change

Other data:

Year ended December 31, 2023 vs. year ended December 31, 2022

Total orders increased by $133.8 million, or 9%, for the year ended December 31, 2023, inclusive of the effects of acquisitions and pricing actions. U.S. orders increased by $73.1 million, or 6%, primarily due to improvements in orders for street sweepers, road-marking and line-removal equipment, dump truck bodies, multi-purpose tractors, industrial vacuum loaders and refuse trucks of $26.9 million, $22.9 million, $19.5 million, $12.0 million, $9.5 million and $6.4 million, respectively. Additionally, aftermarket demand increased by $43.2 million. Partially offsetting these improvements were reductions in orders for trailers,

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safe-digging trucks and wasterblasting equipment of $36.9 million, $28.8 million and $7.4 million, respectively. Non-U.S. orders increased by $60.7 million, or 25%, primarily due to improvements in orders for refuse trucks, multi-purpose tractors and sewer cleaners of $45.0 million, $8.7 million and $4.8 million, respectively. Additionally, aftermarket demand increased by $14.2 million. Partially offsetting these improvements was a $5.6 million reduction in orders for street sweepers and a $7.8 million unfavorable foreign currency translation impact.

Net sales increased by $247.3 million, or 21%, for the year ended December 31, 2023, primarily due to higher sales volumes, inclusive of the effects of acquisitions, pricing actions and increased chassis sales. U.S. sales increased by $165.8 million, or 17%, largely due to a $45.1 million increase in aftermarket revenues and increases in sales of street sweepers, sewer cleaners, safe-digging trucks, industrial vacuum loaders, trailers, multi-purpose tractors, road-marking and line-removal equipment and refuse trucks of $35.5 million, $28.1 million, $21.4 million, $16.3 million, $10.5 million, $7.8 million, $7.5 million and $6.3 million, respectively. Partially offsetting these improvements were reductions in shipments of hoists and waterblasting equipment of $7.9 million and $5.5 million, respectively. Non-U.S. sales increased by $81.5 million, or 42%, largely due to a $21.1 million improvement in aftermarket revenues and increases in sales of refuse trucks, metal extraction support equipment, multi-purpose tractors and sewer cleaners of $24.8 million, $17.9 million, $13.6 million and $6.9 million, respectively. Partially offsetting these improvements was a $5.9 million reduction in sales of safe-digging trucks and a $6.4 million unfavorable foreign currency translation impact.

Cost of sales increased by $162.3 million, or 17%, for the year ended December 31, 2023, primarily related to increased sales volumes, inclusive of the effects of acquisitions, increased chassis costs and a $3.2 million increase in depreciation expense, partially offset by a $6.2 million favorable foreign currency translation impact. Including these factors, gross profit margin for the year ended December 31, 2023 was 23.6%, compared to 21.4% in the prior year, with the improvement primarily attributable to improved operating leverage from higher sales volumes and benefits from pricing actions, partially offset by an increase in lower margin chassis sales.

SEG&A expenses increased by $16.8 million, or 17%, for the year ended December 31, 2023, primarily due to additional costs from acquired businesses, as well as increases in sales commissions and incentive-based compensation expense. As a percentage of net sales, SEG&A expenses were 7.9% in the current year, compared to 8.1% in the prior year.

Operating income increased by $64.7 million, or 45%, for the year ended December 31, 2023, largely due to a $85.0 million increase in gross profit, partially offset by the $16.8 million increase in SEG&A expenses, a $2.3 million increase in amortization expense and a $1.2 million increase in acquisition-related costs.

Backlog was $967 million at December 31, 2023, compared to $824 million at December 31, 2022.

Safety and Security Systems

The following table summarizes the Safety and Security Systems Group’s operating results as of, and for the years ended, December 31, 2023, 2022 and 2021:

For the Years Ended December 31, Change

Other data:

Depreciation and amortization 4.2 4.2 3.6 — 0.6

Year ended December 31, 2023 vs. year ended December 31, 2022

Total orders increased by $44.1 million, or 18%, for the year ended December 31, 2023. U.S. orders increased by $16.9 million, or 11%, compared to the prior year, driven by improvements in orders for public safety equipment, warning systems and industrial signaling equipment of $10.8 million, $4.9 million and $1.2 million, respectively. Non-U.S. orders increased by $27.2 million, or 31%, primarily due to a $23.9 million improvement in orders for public safety equipment, inclusive of a large fleet order from a customer in Mexico, as well as a $2.8 million improvement in orders for warning systems.

Net sales increased by $40.6 million, or 17%, for the year ended December 31, 2023, inclusive of the effects of higher sales volumes and pricing actions. U.S. sales increased by $21.8 million, or 14%, driven by improvements in sales of public safety

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equipment, industrial signaling equipment and warning systems of $12.6 million, $4.7 million and $4.5 million, respectively. Non-U.S. sales increased by $18.8 million, or 21%, largely due to improvements in sales of public safety equipment, industrial signaling equipment and warning systems of $10.1 million and $6.3 million and $2.3 million, respectively.

Cost of sales increased by $20.3 million, or 13%, for the year ended December 31, 2023, primarily related to higher sales volumes. Gross profit margin for the year ended December 31, 2023 was 38.9%, compared to 37.1% in the prior year, with the improvement primarily attributable to improved operating leverage from higher sales volumes, benefits from pricing actions and lower freight costs.

SEG&A expenses increased by $6.3 million for the year ended December 31, 2023, primarily due to higher sales commissions and incentive-based compensation expense. As a percentage of net sales, SEG&A expenses were 19.7% in the current year, compared with 20.4% in the prior year.

Operating income increased by $14.0 million, or 34%, for the year ended December 31, 2023, primarily due to a $20.3 million increase in gross profit, partially offset by the $6.3 million increase in SEG&A expenses.

Backlog was $59 million at December 31, 2023, compared to $55 million at December 31, 2022.

Corporate Expense

Corporate operating expenses were $39.5 million, $24.5 million and $22.5 million for the years ended December 31, 2023, 2022 and 2021, respectively.

For the year ended December 31, 2023, corporate operating expenses increased by $15.0 million compared to the prior year, with the increase primarily due to higher post-retirement expenses and increases in incentive-based compensation, stock compensation, medical and IT costs, partially offset by a $0.3 million decrease in acquisition-related expenses. During the year ended December 31, 2023, the Company recognized a $2.1 million benefit associated with a reduction in the estimated fair value of contingent consideration. During the year ended December 31, 2022, the Company received a favorable settlement of $1.9 million in a post-closing adjustment dispute associated with the 2021 acquisition of OSW Equipment & Repair, LLC. These acquisition-related benefits have been included as a component of Acquisition and integration-related expenses (benefits), net on the Consolidated Statements of Operations.

The Company’s hearing loss litigation has historically been managed by the Company’s legal staff resident at the corporate office and not by management at either segment. In accordance with Accounting Standards Codification (“ASC”) 280, Segment Reporting, which provides that segment reporting should follow the management of the item and that certain expenses may be corporate expenses, these legal expenses (which are not part of the normal operating activities of any of our reportable segments) are reported and managed as corporate expenses.

Financial Condition, Liquidity and Capital Resources

The Company uses its cash flow from operations to fund growth and to make capital investments that sustain its operations, reduce costs, or both. Beyond these uses, remaining cash is used to pay down debt, repurchase shares, fund dividend payments and make pension contributions. The Company may also choose to invest in the acquisition of businesses. In the absence of significant unanticipated cash demands, we believe that the Company’s existing cash balances, cash flow from operations and borrowings available under the 2022 Credit Agreement will provide funds sufficient for these purposes. The net cash flows associated with the Company’s rental equipment transactions are included in cash flow from operating activities.

The Company’s cash and cash equivalents totaled $61.0 million, $47.5 million and $40.5 million as of December 31, 2023, 2022 and 2021, respectively. As of December 31, 2023, $27.8 million of cash and cash equivalents was held by foreign subsidiaries. Cash and cash equivalents held by subsidiaries outside the U.S. typically are held in the currency of the country in which it is located. The Company uses this cash to fund the operating activities of its foreign subsidiaries and for further investment in foreign operations. Generally, the Company has considered such cash to be indefinitely reinvested in its foreign operations and the Company’s current plans do not demonstrate a need to repatriate such cash to fund U.S. operations. However, in the event that these funds were needed to fund U.S. operations or to satisfy U.S. obligations, they generally could be repatriated. The repatriation of these funds may cause the Company to incur additional U.S. income tax expense and withholding taxes, as applicable, dependent on income tax laws and other circumstances at the time any such amounts were repatriated.

Net cash provided by operating activities totaled $194.4 million, $71.8 million and $101.8 million in 2023, 2022 and 2021, respectively. The increase in cash generated by operating activities in 2023 compared to the prior year was primarily due to

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working capital improvements and higher net income, partially offset by increased rental fleet investments to support strong demand for rentals and used equipment and higher income tax payments.

Net cash used for investing activities totaled $83.7 million, $99.7 million and $168.7 million in 2023, 2022 and 2021, respectively. In each of the years presented, cash was used to fund the purchase of properties and equipment, with $30.3 million, $53.0 million and $37.4 million of capital expenditures in 2023, 2022 and 2021, respectively. Capital expenditures in 2022 included the acquisition of the Company’s University Park, Illinois manufacturing facility for $28 million, and capital expenditures in 2021 included the purchase of the Company’s Elgin, Illinois manufacturing facility for $19.8 million. During 2023, the Company made initial payments of $41.9 million and $13.0 million to acquire Trackless and Blasters. During 2022 the Company completed the acquisition of TowHaul for initial consideration of $43.3 million. In addition, during 2022 the Company paid $4.3 million to acquire certain distribution rights from dealers and funded a $1.6 million post-closing adjustment related to the 2021 acquisition of substantially all of the assets and operations of Deist Industries, Inc. In 2021, the Company completed three acquisitions for aggregate initial consideration of $131.8 million, excluding cash acquired.

Net cash of $97.9 million was used for financing activities in 2023, whereas in 2022 and 2021, $35.5 million, and $26.4 million, respectively, was provided by financing activities. In 2023, the Company paid down $64.1 million of borrowings under its revolving credit facility and $0.8 million under its term loan facility, funded cash dividends and share repurchases of $23.8 million and $5.5 million, respectively, and redeemed $7.0 million of stock in order to remit funds to tax authorities to satisfy employees’ tax withholdings following the vesting of stock-based compensation and the exercise of stock options. The Company also received $3.9 million from stock option exercises. In 2022, the Company borrowed $81.2 million under its revolving credit facility, primarily to fund acquisitions, and received $0.2 million from stock option exercises. The Company also funded cash dividends and share repurchases of $21.8 million and $16.1 million, respectively, and redeemed $6.2 million of stock in order to remit funds to tax authorities to satisfy employees’ tax withholdings following the vesting of stock-based compensation and the exercise of stock options. In 2021, the Company borrowed $70.5 million under its revolving credit facility, primarily to fund acquisitions, and received $4.2 million from stock option exercises. The Company also funded cash dividends and share repurchases of $22.0 million and $15.4 million, respectively, and redeemed $10.7 million of stock in order to remit funds to tax authorities to satisfy employees’ tax withholdings following the vesting of stock-based compensation and the exercise of stock options.

On October 21, 2022, the Company entered into the 2022 Credit Agreement, by and among the Company and certain of its foreign subsidiaries (collectively, the “Borrowers”), Wells Fargo Bank, National Association, as administrative agent, swingline lender and issuing lender, PNC Bank, National Association and Truist Bank as syndication agents, and the other lenders and parties signatory thereto.

The 2022 Credit Agreement is a senior secured credit facility which provides the Borrowers access to an aggregate principal amount of $800 million, consisting of (i) a revolving credit facility in an amount up to $675 million (the “Revolver”) and (ii) a term loan facility in an amount up to $125 million. The Revolver provides for borrowings in the form of loans or letters of credit up to the aggregate availability under the facility, with a sub-limit of $100 million for letters of credit. Borrowings can be made in denominations of U.S. Dollars, Canadian Dollars, Euros or British Pounds (with borrowings in non-U.S. currencies subject to a sublimit of $300 million). In addition, the Company may expand its borrowing capacity under the 2022 Credit Agreement by up to the greater of (i) $400 million and (ii) 100% of Consolidated EBITDA for the applicable four-quarter period preceding such expansion notice, subject to the approval of the applicable lenders providing such additional borrowings in the form of increases to their revolving facility commitment, or funding of incremental term loans. Borrowings under the 2022 Credit Agreement may be used for working capital and general corporate purposes, including acquisitions. The 2022 Credit Agreement matures on October 21, 2027.

The Company’s material domestic subsidiaries provide guarantees for all obligations of the Borrowers under the 2022 Credit Agreement, which is secured by a first priority security interest in (i) all existing or hereafter acquired domestic property and assets of the Company and material domestic subsidiaries, (ii) the stock or other equity interests in each of the material domestic subsidiaries and (iii) 65% of outstanding voting capital stock of certain first-tier foreign subsidiaries, subject to certain exclusions.

Borrowings under the 2022 Credit Agreement bear interest, at the Company’s option, at a base rate or an Adjusted Term Secured Overnight Financing Rate (“SOFR”), Adjusted Eurocurrency Rate or Adjusted Daily Simple SONIA Rate (as each is defined in the 2022 Credit Agreement), plus, in each case, an applicable margin. The applicable margin ranges from zero to 0.75% for base rate borrowings and 1.00% to 1.75% for Adjusted Term SOFR, Adjusted Eurocurrency Rate or Adjusted Daily Simple SONIA Rate borrowings. The Company must also pay a commitment fee to the lenders ranging between 0.10% to 0.25% per annum on the unused portion of the $675 million Revolver along with other standard fees. Applicable margin, issuance fees and other customary expenses are payable on outstanding letters of credit.

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The Company is subject to certain net leverage ratio and interest coverage ratio financial covenants under the 2022 Credit Agreement that are to be measured at each fiscal quarter-end. The 2022 Credit Agreement also includes certain “covenant holiday” periods, which allow for the temporary increase of the minimum net leverage ratio following the completion of a permitted acquisition, or a series of acquisitions, when the aggregate consideration over a period of twelve months exceeds $75 million. In addition, the 2022 Credit Agreement includes customary negative covenants, subject to certain exceptions, restricting or limiting the Company’s and its subsidiaries’ ability to, among other things: (i) make non-ordinary course dispositions of assets; (ii) make certain fundamental business changes, such as mergers, consolidations or any similar combination; (iii) make restricted payments, including dividends and stock repurchases; (iv) incur indebtedness; (v) make certain loans and investments; (vi) create liens; (vii) transact with affiliates; (viii) enter into certain sale/leaseback transactions; (ix) make negative pledges; and (x) modify subordinated debt documents.

Under the 2022 Credit Agreement, restricted payments, including dividends and stock repurchases, shall be permitted if (i) the Company’s leverage ratio is less than or equal to 3.25x; (ii) the Company is in compliance with all other financial covenants; and (iii) there are no existing defaults under the 2022 Credit Agreement. If its leverage ratio is more than 3.25x, the Company is still permitted to fund (1) up to $35 million of dividend payments and stock repurchases annually; and (2) additional incremental other cash payments up to the greater of $65 million or 5% of consolidated total assets for the term of the 2022 Credit Agreement.

The 2022 Credit Agreement contains customary events of default. If an event of default occurs and is continuing, the Borrowers may be required immediately to repay all amounts outstanding under the 2022 Credit Agreement and the commitments from the lenders may be terminated.

The 2022 Credit Agreement amended and restated the Second Amended and Restated Credit Agreement (as amended, the “2019 Credit Agreement”), which provided the Company with a $500 million revolving credit facility.

As of December 31, 2023, there was $173.2 million of cash drawn on the Revolver, $124.2 million outstanding under the term loan facility and $9.1 million of undrawn letters of credit under the 2022 Credit Agreement, with $492.7 million of net availability for borrowings.

The following table summarizes the gross borrowings and gross payments under the Company’s revolving credit facilities:

For the Years Ended December 31,

Aggregate maturities of long-term borrowings and finance lease obligations are $4.7 million in 2024, $7.8 million in 2025, $10.2 million in 2026 and $276.3 million in 2027. The weighted average interest rate on long-term borrowings was 5.9% at December 31, 2023.

The Company paid interest of $22.8 million in 2023, $9.4 million in 2022 and $3.9 million in 2021.

The Company paid income taxes of $46.2 million in 2023, $26.9 million in 2022 and $35.5 million in 2021.

Cash dividends of $23.8 million, $21.8 million and $22.0 million were declared and paid to stockholders in 2023, 2022 and 2021, respectively.

The Company anticipates that capital expenditures for 2024 will be in the range of $35 million to $40 million. The Company believes that its financial resources and major sources of liquidity, including cash flow from operations and borrowing capacity, will be adequate to meet its operating needs, capital needs and financial commitments.

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Contractual Obligations and Off-Balance Sheet Arrangements

The following table summarizes the Company’s contractual obligations and payments due by period as of December 31, 2023:

Payments Due by Period

Interest payments on long-term debt (a) 64.4 17.4 33.7 13.3 —

Finance lease obligations 1.6 0.8 0.8 — —

Pension contributions (d) 5.2 5.2 — — —

Contingent earn-out payments (e) 4.9 — 4.9 — —

(a) Amounts represent estimated contractual interest payments on outstanding long-term debt.

(b) Amounts include contractual obligations associated with lease arrangements with an initial term of twelve months or less, which are not recorded on the Consolidated Balance Sheets. For further discussion, see Note 4 – Leases to the accompanying consolidated financial statements.

(c) Purchase obligations primarily relate to commercial chassis and other contracts in the ordinary course of business.

(d) The Company expects to contribute up to $5.0 million to the U.S. benefit plan and up to $0.2 million to the non-U.S. benefit plan in 2024, which represent the minimum required contributions. Future contributions to the plans will be based on such factors as (i) annual service cost, (ii) the financial return on plan assets, (iii) interest rate movements that affect discount rates applied to plan liabilities and (iv) the value of benefit payments made. Due to the high degree of uncertainty regarding the potential future cash outflows associated with these plans, the Company is unable to provide a reasonably reliable estimate of the amounts and periods in which any additional liabilities might be paid.

(e) Represents the fair value of the contingent earn-out payments associated with the Deist, Blasters and Trackless acquisitions. For further discussion, see Note 2 – Acquisitions to the accompanying consolidated financial statements.

(f) As of December 31, 2023, the Company had a liability of approximately $1.1 million for unrecognized tax benefits, including penalties and interest. For further discussion, see Note 10 – Income Taxes to the accompanying consolidated financial statements. Due to the uncertainties related to these tax matters, the Company generally cannot make a reasonably reliable estimate of the period of cash settlement for this liability. As such, the potential future cash outflows are not included in the table above.

The following table summarizes the Company’s off-balance sheet arrangements and the notional amount by expiration period as of December 31, 2023:

Notional Amount by Expiration Period

(in millions of dollars) Total Less than1 Year 2-3 Years 4-5 Years

Financial standby letters of credit (a) $ 9.1 $ 9.1 $ — $ —

Performance and bid bonds (b) 12.1 11.9 0.2 —

Repurchase obligations (c) 1.5 0.7 0.6 0.2

Total off-balance sheet arrangements $ 22.7 $ 21.7 $ 0.8 $ 0.2

(a) Financial standby letters of credit largely relate to casualty insurance policies for the Company’s workers’ compensation, automobile, general liability and product liability policies.

(b) Performance and bid bonds primarily relate to guarantees of performance of certain subsidiaries that engage in transactions with domestic and foreign customers.

(c) Relates to certain transactions that the Company has entered into involving the sale of equipment to certain of its customers which included (i) guarantees to repurchase the equipment for a fixed price at a future date and (ii) guarantees to repurchase the equipment from the third-party lender in the event of default by the customer. For further discussion, see Note 12 – Commitments and Contingencies to the accompanying consolidated financial statements.

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Critical Accounting Policies and Estimates

The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities, (ii) disclosure of contingent assets and liabilities at the date of the consolidated financial statements and (iii) the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The Company considers the following policies to be the most critical in understanding the judgments that are involved in the preparation of the Company’s consolidated financial statements and the uncertainties that could impact the Company’s financial condition, results of operations or cash flow.

Goodwill

Goodwill represents the excess of the cost of an acquired business over the amounts assigned to its net assets. Goodwill is not amortized but is tested for impairment at a reporting unit level on an annual basis or more frequently if indicators of impairment exist. The Company performed its annual goodwill impairment test as of October 31, 2023.

In testing the goodwill of its reporting units for potential impairment, the Company applies either a qualitative or quantitative test, in accordance with ASC 350, Intangibles – Goodwill and Other.

A qualitative approach may be applied when the Company concludes that it is not “more likely than not” that the fair value of a reporting unit is less than its carrying value. In conducting a qualitative assessment, the Company analyzes a variety of events or factors that may influence the fair value of the reporting unit, including, but not limited to: the results of prior quantitative assessments performed; changes in the carrying amount; actual and projected financial performance; relevant market data for both the Company and its guideline comparable companies; industry outlook; and macroeconomic conditions. Significant judgment is used to evaluate the totality of these events and factors to make the determination of whether it is more likely than not that the fair value of the reporting unit is less than its carrying value. In this situation, the Company would not be required to perform the quantitative impairment test described below.

A quantitative approach is performed by comparing the fair value of a reporting unit with its carrying amount. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not impaired and no impairment charge is required. If the carrying amount of a reporting unit exceeds its fair value, this difference is recorded as an impairment charge not to exceed the carrying amount of goodwill. The Company generally determines the fair value of its reporting units using both the income and market approaches.

Under the income approach, the key assumptions include projected sales and earnings before interest, income taxes, depreciation and amortization (“EBITDA”). These assumptions are determined by management utilizing our internal operating plan, including growth rates for revenues and margin assumptions. An additional key assumption under this approach is the discount rate, which is determined by reviewing current risk-free rates of capital and current market interest rates and by evaluating the risk premium relevant to the reporting unit. If the Company’s assumptions relative to growth rates were to change, the fair value calculation may change, which could result in impairment.

Under the market approach, the Company estimates fair value using marketplace fair value data from within a comparable industry grouping of publicly traded companies and from pricing multiples implied from sales of companies similar to the Company’s reporting units. The Company’s selection of comparable guideline companies is a key assumption underlying the market approach. Similar to the income approach discussed above, sales, cost of sales, operating expenses, EBITDA and their respective growth rates are also key assumptions utilized. The market prices of the Company’s common stock and other guideline companies are additional key inputs. If these market prices increase, the estimated market value would increase. Conversely, if market prices decrease, the estimated market value would decrease.

The results of these two methods are weighted based upon management’s evaluation of the relevance of the two approaches.

Although the Company believes its estimates of fair value are reasonable, actual financial results could differ from estimated financial results due to the inherent uncertainty involved in making such estimates. Changes in assumptions concerning future financial results or other underlying assumptions could have a significant impact on either the fair value of the reporting units, the amount of any goodwill impairment charge, or both. The Company also compares the sum of the estimated fair values of its reporting units to the overall fair value of the Company implied by its market capitalization. This comparison provides an indication that, in total, assumptions and estimates are reasonable. Future declines in the overall market value of the Company may also result in a conclusion that the fair value of one or more reporting units has declined below its carrying value.

In 2023, the Company performed a combination of qualitative and quantitative impairment tests to assess the goodwill of its reporting units for potential impairment. For one reporting unit, a quantitative impairment test was performed, using a combination of the income and market approaches to determine the fair value of its reporting unit. The valuation was prepared

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by a third-party valuation specialist. One measure of the sensitivity of assumptions used in the impairment analysis is the amount by which the reporting unit “passed” (fair value exceeds the carrying value). The fair value of the reporting unit exceeded its carrying value by more than 20%. Therefore, no impairment was recognized. For its other reporting units, the Company applied the qualitative approach and concluded that it was not “more likely than not” that the fair value of the reporting units were less than their carrying values. Accordingly, further quantitative testing was not required to be performed.

The Company had no goodwill impairments in 2023, 2022 or 2021. For all reporting units, a 10% decrease in the estimated fair value would have had no effect on the carrying value of goodwill at the annual measurement date in 2023. However, adverse changes to the Company’s business environment and future cash flow could cause us to record impairment charges in future periods, which could be material.

See Note 8 – Goodwill and Other Intangible Assets to the accompanying consolidated financial statements for a summary of the Company’s goodwill by segment.

Indefinite-lived Intangible Assets

An intangible asset determined to have an indefinite useful life is not amortized. Indefinite-lived intangible assets are tested for impairment on an annual basis at year-end, or more frequently if an event occurs or circumstances change that indicate the fair value of an indefinite-lived intangible asset could be below its carrying amount. The Company’s indefinite-lived intangible assets include trade names associated with acquisitions.

In testing the indefinite-lived intangibles assets for potential impairment, the Company applies either a qualitative test, or a quantitative test, in accordance with ASC 350, Intangibles — Goodwill and Other. A qualitative approach may be applied when the Company concludes that it is not “more likely than not” that the fair value of the indefinite-lived intangible assets are less than their carrying value. A quantitative impairment test consists of comparing the fair value of the indefinite-lived intangible asset with its carrying amount. An impairment loss would be recognized for the carrying amount in excess of its fair value.

Significant judgment is applied when evaluating whether an intangible asset has an indefinite useful life and in testing for impairment. The Company primarily uses the relief from royalty model to estimate the fair value of the indefinite-lived intangible assets. The relief from royalty model requires management to make a number of business and valuation assumptions including future revenue growth and royalty rates.

In 2023, the Company performed a combination of qualitative and quantitative impairment tests over its indefinite-lived intangible assets. The fair value of the indefinite-lived intangible asset that was quantitatively tested for impairment exceeded its carrying value by approximately 40%, and, therefore, no impairment was recognized. This valuation was prepared by a third-party valuation specialist. Further, the Company concluded that it was not “more likely than not” that the fair value of indefinite-lived intangible assets that were qualitatively tested for impairment were less than the carrying amounts. Accordingly, further quantitative testing was not required to be performed.

The Company had no indefinite-lived intangible asset impairments in 2023, 2022 or 2021. Although the Company believes its estimates of fair value are reasonable, actual financial results could differ from estimated financial results due to the inherent uncertainty involved in making such estimates. The use of alternative estimates and assumptions could increase or decrease the estimated fair value of the assets and potentially result in different impacts to the Company’s results of operations. Actual results may differ from the Company’s estimates.

See Note 8 – Goodwill and Other Intangible Assets to the accompanying consolidated financial statements for a summary of the Company’s indefinite-lived intangible assets.

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Item 7A. Quantitative and Qualitative Disclosures about Market Risk.

The Company is subject to market risk associated with changes in interest rates and foreign exchange rates. To mitigate this risk, the Company may utilize derivative financial instruments, including interest rate swaps and foreign currency forward contracts. The Company does not hold or issue derivative financial instruments for trading or speculative purposes and is not party to leveraged derivatives contracts.

Interest Rate Risk

The Company has certain debt instruments which subject it to market risk associated with movements in interest rates. The fair value of the Company’s total debt obligations held at December 31, 2023 was $299.0 million. From time to time, the Company may enter into interest rate swaps as a means of fixing the floating interest rate component on its variable-rate debt. At December 31, 2023, the Company had two interest rate swaps outstanding. The swaps had an aggregate notional amount of $150.0 million, and fixed the floating interest rate component on $150.0 million of the Company’s variable-rate debt. See Note 9 – Debt to the accompanying consolidated financial statements for a description of the Company’s debt agreements and interest rate swaps that were in place during 2023. A hypothetical 1% increase or decrease in variable interest rates on the Company’s total debt obligations as of December 31, 2023 would increase or decrease annual interest expense by approximately $1.5 million.

Foreign Exchange Rate Risk

Although the majority of the Company’s sales, expenses and cash flow are transacted in U.S. Dollars, the Company has exposure to changes in foreign exchange rates, primarily the Canadian Dollar, Euro and British Pound. The impact of currency movements on the Company’s financial results is largely mitigated by natural hedges in its operations. The Canadian operations of JJE and Trackless primarily conduct business in Canadian dollars. Almost all other sales of product from the U.S. to other parts of the world are denominated in U.S. dollars. Sales from and within other currency zones are predominantly transacted in the currency of the country sourcing the product or service. Approximately 78% of the Company’s net sales are conducted within the U.S. and are transacted in U.S. dollars. The Company estimates that a 10% appreciation of the U.S. dollar against other currencies would reduce full-year net sales by approximately 2% and operating income by approximately 1%.

The Company may also have foreign currency exposures related to buying and selling in currencies other than the local currency in which it operates and to certain balance sheet positions. If such transactional or balance sheet exposures are material, the Company may enter into matching foreign currency forward contracts from time to time to protect against variability in exchange rates.

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Item 8. Financial Statements and Supplementary Data.

FEDERAL SIGNAL CORPORATION

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Page

Reports of Independent Registered Public Accounting Firm (PCAOB ID No. 34) 30

Consolidated Balance Sheets as of December 31, 2023 and 2022 35

Notes to Consolidated Financial Statements 38

Note 1 – Summary of Significant Accounting Policies 38

Note 2 – Acquisitions 42

Note 3 – Revenue Recognition 49

Note 4 – Leases 51

Note 5 – Inventories 52

Note 6 – Properties and Equipment, Net 52

Note 7 – Rental Equipment, Net 52

Note 8 – Goodwill and Other Intangible Assets 53

Note 9 – Debt 53

Note 10 – Income Taxes 56

Note 11 – Pension and Other Post-Employment Plans 59

Note 12 – Commitments and Contingencies 63

Note 13 – Legal Proceedings 63

Note 14 – Earnings Per Share 65

Note 15 – Stock-based Compensation 66

Note 16 – Stockholders’ Equity 69

Note 17 – Segment Information 71

Note 18 – Fair Value Measurements 74

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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Federal Signal Corporation

Oak Brook, Illinois

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Federal Signal Corporation and subsidiaries (the “Company”) as of December 31, 2023 and 2022, the related consolidated statements of operations, comprehensive income, stockholders’ equity, and cash flows, for each of the three years in the period ended December 31, 2023, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 27, 2024, expressed an unqualified opinion on the Company's internal control over financial reporting.

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 U.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 regarding 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 Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates 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 matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Goodwill - Refer to Notes 1 and 8 to the financial statements

Critical Audit Matter Description

In testing the goodwill of its reporting units for potential impairment, the Company applies either a qualitative or quantitative test, in accordance with ASC 350, Intangibles – Goodwill and Other. A qualitative approach may be applied when the Company concludes that it is not “more likely than not” that the fair value of a reporting unit is less than its carrying value.

A quantitative approach is performed by comparing the fair value of a reporting unit with its carrying amount (“quantitative assessment”).

For reporting units tested for impairment using the quantitative assessment, the Company determines the fair value of each reporting unit using both the income and market approaches. The income approach requires management to make a number of business and valuation assumptions for each reporting unit including annual assumptions of projected sales, cost of sales, operating expenses, earnings before interest, income taxes, depreciation, and amortization (“EBITDA”), and discount rates. The market approach requires management to estimate fair value using marketplace fair value data derived from a comparable industry grouping of publicly traded companies and from pricing multiples implied from sales of companies similar to the Company’s reporting units (“market multiples”). No impairment was recognized in 2023.

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We identified the valuation of goodwill for one of the Company’s reporting units as a critical audit matter due to the reporting unit’s historical performance as compared to projections and because the determination of reporting unit fair value was based on significant assumptions that are sensitive to changes and are affected by expected future market and economic conditions. Auditing management’s judgments used in the quantitative assessment regarding significant assumptions related to projected sales and EBITDA (“forecasts”) as well as the selection of market multiples applied to management’s projected sales and EBITDA estimates for this reporting unit required a high degree of auditor judgment and an increased extent of effort, including the need to involve our fair value specialists.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the Company’s forecasts and the selection of market multiples for this reporting unit included the following, among others:

•We tested the design and operating effectiveness of controls over the annual goodwill impairment assessment, including those over the forecasts and the market multiples.

•We evaluated management’s ability to accurately forecast projected sales and EBITDA by comparing actual results to management’s historical forecasts.

•We evaluated the reasonableness of management’s forecasts by comparing the forecasts to:

◦Internal communications to management and the Board of Directors.

◦Historical results, third-party economic research, industry performance, and peer company performance.

◦Actual results from the October 31, 2023 annual measurement date to December 31, 2023.

•We performed sensitivity analyses to evaluate the risk of impairment if key assumptions are changed.

•With the assistance of our fair value specialists, we evaluated the reasonableness of the (1) valuation methodology and (2) market multiples by performing certain procedures, that included:

◦Evaluating whether the fair value models being used are appropriate considering the Company’s circumstances and valuation premise identified.

◦Evaluating the market multiples by considering (1) the selected comparable industry grouping of publicly traded companies, (2) the selected sales of companies similar to the Company’s reporting units, and (3) the adjustments made for differences in growth prospects and risk profiles between the reporting unit and the comparable industry grouping of publicly traded companies.

◦Testing the underlying source information and mathematical accuracy of the calculations.

/s/ Deloitte & Touche LLP

Chicago, Illinois

February 27, 2024

We have served as the Company’s auditor since 2013.

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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Federal Signal Corporation

Oak Brook, Illinois

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Federal Signal Corporation and subsidiaries (the “Company”) as of December 31, 2023, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2023, of the Company and our report dated February 27, 2024, expressed an unqualified opinion on those financial statements.

As described in Management's Annual Report on Internal Control over Financial Reporting, management excluded from its assessment, the internal control over financial reporting at Trackless Vehicles Limited, Trackless Vehicles Asset Corp, and Work Equipment Ltd. (collectively, “Trackless”), which were acquired on April 3, 2023, and whose financial statements constitute 2% of total assets and 1% of net sales of the consolidated financial statement amounts (excluding goodwill and intangible assets, which were integrated into the Company’s control environment) for the year ended December 31, 2023. Accordingly, our audit did not include the internal control over financial reporting at Trackless.

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 Annual Report on Internal Control over Financial Reporting. 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.

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 the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

Chicago, Illinois

February 27, 2024

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FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

For the Years Ended December 31,

(in millions of dollars, except per share data) 2023 2022 2021

Selling, engineering, general and administrative expenses 210.1 171.7 149.2

Acquisition and integration-related expenses (benefits), net 0.4 (0.5) (2.1)

Pension settlement charges — — 10.3

Other expense (income), net 1.8 (0.4) (1.7)

Earnings per share:

Weighted average shares outstanding:

See notes to consolidated financial statements.

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FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

For the Years Ended December 31,

Other comprehensive income (loss):

Change in foreign currency translation adjustment 5.9 (12.6) (4.7)

Total other comprehensive income (loss) 2.7 (9.8) 17.5

See notes to consolidated financial statements.

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FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

As of December 31,

(in millions of dollars, except per share data) 2023 2022

ASSETS

Current assets:

Cash and cash equivalents $ 61.0 $ 47.5

Prepaid expenses and other current assets 19.6 17.4

Properties and equipment, net 190.8 179.3

Operating lease right-of-use assets 21.0 24.7

Deferred tax assets 12.0 8.8

Deferred charges and other long-term assets 11.5 9.4

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Accrued liabilities:

Compensation and withholding taxes 42.3 31.1

Current operating lease liabilities 6.8 6.9

Other current liabilities 48.2 43.2

Long-term borrowings and finance lease obligations 294.3 361.5

Long-term operating lease liabilities 14.9 18.5

Long-term pension and other post-retirement benefit liabilities 44.2 38.9

Deferred tax liabilities 53.2 51.0

Other long-term liabilities 16.2 13.0