Our operating subsidiaries are engaged primarily in the research, development, manufacture, sale and support of the products and systems described below. Their respective businesses are subject to a number of risks and uncertainties, including without limitation those discussed in Item 1A, “Risk Factors.” See also Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and “Forward-Looking Information.”

We are continually seeking ways to reduce our overall operating costs, streamline business processes and enhance the branding of our products and services. During 2019, Doble sold its headquarters facility in Watertown, Massachusetts, and during 2020 it consolidated its headquarters operations into a single, more cost-efficient facility in Marlborough, Massachusetts. In 2021, Doble closed its facility in Toronto, Ontario and consolidated its Manta product line into its existing production capacity for Doble instruments.

We are also continually seeking opportunities to supplement our growth by making strategic acquisitions. In 2019 we acquired Globe Composite Solutions, LLC; in October 2020 we acquired Advanced Technology Machining, Inc. (ATM) and its sister company TECC Grinding, Inc.; in July 2021 we acquired I.S.A Altanova Group S.r.l. and its affiliated companies (Altanova); and in August 2021 we acquired the assets of Phenix Technologies Inc. (Phenix). Information about these acquired businesses is provided in the following section, “Products,” and in Note 2 to the Consolidated Financial Statements.

In December 2019, we sold the businesses comprising our former Technical Packaging segment and used the proceeds from the sale to pay down debt and for other corporate purposes, including the termination of our defined benefit pension plan. The Technical Packaging segment was reported as Discontinued Operations in 2020 and is presented accordingly for all periods in this report. See Note 3 to the Consolidated Financial Statements.

Products

Our principal products are described below. See Note 12 to the Consolidated Financial Statements for financial information regarding business segments and 10% customers.

A&D

Beginning in the first quarter of 2020, we renamed our Filtration/Fluid Flow segment as Aerospace & Defense to better reflect the composition of the segment’s products, end markets and customer characteristics. The A&D segment’s individual legal and operating entities and historical financial results are unchanged from what was formerly presented as Filtration/Fluid Flow.

The A&D segment accounted for approximately 44%, 48% and 45% of our total revenue in 2021, 2020 and 2019, respectively.

Our companies within this segment primarily design and manufacture specialty filtration, fluid control and naval products, including hydraulic filter elements and fluid control devices used in aerospace and defense applications, unique filter mechanisms used in micro-propulsion devices for satellites, custom designed filters for manned aircraft and submarines, products and systems to reduce vibration and/or acoustic signatures and otherwise reduce or obscure a vessel’s signature, and other communications, sealing, surface control and hydrodynamic related applications to enhance U.S. Navy maritime survivability; precision-tolerance machined components for the aerospace and defense industry; and metal processing services.The segment has six facilities in the United States and one in Mexico.

USG

Our USG segment accounted for approximately 28%, 26% and 29% of our total revenue in 2021, 2020 and 2019, respectively.

Doble is an industry leader in the development, manufacture and delivery of diagnostic testing and data management solutions that enable electric power grid operators to assess the integrity of high-voltage power delivery equipment. It combines three core elements for customers – diagnostic test instruments and condition monitoring systems, expert consulting, and testing services. The acquisition of Phenix’s assets has enhanced Doble’s high-voltage, high current, high power test systems, components and solutions. NRG is a global market leader in the design and manufacture of decision support tools for the renewable energy industry, primarily wind and solar. Doble and NRG together have eight facilities in the United States and one in Canada.

Altanova, headquartered in Taino, Italy, provides products and services in more than 100 countries. Its strong market share in Europe and Asia creates a significant international platform for our USG segment and fills important product gaps and geographies not previously served by our existing products and solutions. Doble’s offices outside North America have been consolidated with Altanova’s, and going forward we expect that Altanova will represent their combined businesses in markets outside the U.S. and Canada.

Test

Our Test segment accounted for approximately 28%, 26% and 26% of our total revenue in 2021, 2020 and 2019, respectively.

ETS-Lindgren is an industry leader in designing and manufacturing products which provide its customers with the ability to measure and contain magnetic, electromagnetic and acoustic energy. It supplies its customers with a broad range of isolated environments and turnkey systems, including RF test facilities, acoustic test enclosures, RF and magnetically shielded rooms, secure communication facilities, RF measurement systems and broadcast and recording studios. Many of these facilities include proprietary features such as shielded doors and windows. ETS-Lindgren also provides the design, program management, installation and integration services required to successfully complete these types of facilities.

ETS-Lindgren also supplies customers with a broad range of components including RF absorptive materials, RF filters, active compensation systems, antennas, antenna masts, turntables and electric and magnetic probes, RF test cells, proprietary measurement software and other test accessories required to perform a variety of tests. ETS-Lindgren offers a variety of services including calibration for antennas and field probes, chamber certification, field surveys, customer training and a variety of product tests. ETS-Lindgren’s test labs are accredited by the following organizations: American Association for Laboratory Accreditation, National Voluntary Laboratory Accreditation Program and CTIA-The Wireless Association Accredited Test Lab. ETS-Lindgren serves the acoustics, medical, health and safety, electronics, wireless communications, automotive and defense markets. ETS-Lindgren has four facilities in the United States and nine outside the United States.

Marketing and Sales

Our products generally are distributed to customers through a domestic and foreign network of distributors, sales representatives, direct sales teams and in-house sales personnel.

Our sales to international customers accounted for approximately 28%, 27% and 26% of our total revenue in 2021, 2020 and 2019, respectively. See Note 12 to the Consolidated Financial Statements for financial information by geographic area. See Item 1A, “Risk Factors,” for a discussion of risks related to our international operations.

Government Contracts

Some of our products are sold to the U.S. Government either directly under contracts with the Army, Navy and Air Force as well as other Government agencies or indirectly under subcontracts with their prime contractors. Direct and indirect sales to the U.S. Government, primarily related to the A&D segment, accounted for approximately 26%, 28% and 21% of our total revenue in 2021, 2020 and 2019, respectively.

Our Government contracts primarily include firm fixed-price contracts under which work is performed and paid for at a fixed amount without adjustment for the actual costs experienced in connection with the contracts. All Government prime contracts and virtually all of our Government subcontracts provide that they may be terminated at the convenience of the Government or the customer. Upon a termination for convenience, we are entitled to receive equitable compensation from the customer for the work we completed prior to termination.

Executive Order 14042, Ensuring Adequate COVID Safety Protocols for Federal Contractors, issued in September 2021, when implemented, will require government contractors and subcontractors to comply with certain COVID-19 safeguards in workplaces with covered individuals, including vaccination, masking and physical distancing protocols. We are taking steps to comply with the Executive Order at affected locations.

See Item 1A, “Risk Factors,” for a discussion of risks related to our Government business.

Intellectual Property

We own or have other rights in various forms of intellectual property (i.e., patents, trademarks, service marks, copyrights, mask works, trade secrets and other items). As a major supplier of engineered products to industrial and commercial markets, we emphasize developing intellectual property and protecting our rights therein. However, the legal protection afforded by intellectual property rights is often uncertain and can involve complex legal and factual issues. Some intellectual property rights, such as patents, have a limited term, and there can be no assurance that third parties will not infringe or design around our intellectual property. Policing the unauthorized use of intellectual property is difficult, and infringement and misappropriation are persistent problems for many companies, particularly in some international markets, and in some cases, we may elect not to pursue an unauthorized user due to the

high costs and uncertainties associated with litigation. Further, there can be no assurance that courts will ultimately hold issued patents or other intellectual property valid and enforceable. See Item 1A, “Risk Factors.”

A number of products in the Aerospace & Defense segment are based on patented or otherwise proprietary technology that sets them apart from the competition, such as VACCO’s proprietary quieting technology and Westland’s signature reduction solutions. In addition, Globe has developed significant manufacturing and logistics capability useful for special hull treatments for submarines. Globe has also obtained patent protection in the U.S. and Europe for a novel shielding curtain to be used with electromagnetic radiation scanning systems.

In the USG segment, our policy is to seek patent and/or other forms of intellectual property protection on new and improved products, components of products, and methods of operation for our businesses, as such developments are made. Doble has obtained and is pursuing additional patent protection on improvements to its line of diagnostic equipment and NERC CIP compliance tools. Doble also holds an extensive library of apparatus performance information useful to entities that generate, distribute or consume electric energy, and it makes part of this library available to registered users via an Internet portal. NRG has intellectual property related to certain LIDAR technology and applications, and has obtained and is pursuing additional patent protection on its line of bat deterrent systems, which are designed to significantly reduce bat mortality at windfarms and in other applications where bat conservation is a concern.

In the Test segment, we have sought patent protection for significant inventions. Examples of such inventions include novel designs for window and door assemblies used in shielded enclosures and anechoic chambers, improved acoustic techniques for sound isolation and a variety of unique antennas. In addition, the Test segment holds a number of patents, and has patents pending, on products used to perform wireless device testing.

We consider our patents and other intellectual property to be of significant value to each of our segments.

Backlog

Total Company backlog of firm orders at September 30, 2021 was $592.0 million, representing an increase of $80.8 million (15.8%) from the backlog of $511.2 million at September 30, 2020. By segment, the backlog at September 30, 2021 and September 30, 2020, respectively, was $367.2 million and $344.7 million for A&D; $91.6 million and $50.7 million for USG; and $133.2 million and $115.9 million for Test. We estimate that as of September 30, 2021 domestic customers accounted for approximately 73% of our total firm orders and international customers accounted for approximately 27%. Of our total backlog at September 30, 2021, approximately 75% is expected to be completed in the fiscal year ending September 30, 2022.

Purchased Components and Raw Materials

Our products require a wide variety of components and materials. Although we have multiple sources of supply for most of our materials requirements, certain components and raw materials are supplied by sole source vendors, and our ability to perform certain contracts depends on their timely performance. In the past, these required raw materials and various purchased components generally have been available in sufficient quantities. However, we do have some risk of shortages of materials or components due to reliance on sole or limited sources of supply; and supplies of components and materials are periodically impacted by disruptions due to COVID-19 as well as complications due to current or future trade policies. Where feasible, we engineer and qualify substitute products to avoid short-term supply issues; however, we are subject to the same supply chain risks as other electronics manufacturers. An unanticipated delay in delivery by our suppliers could result in the inability to deliver our products on-time and to meet the expectations of our customers. Additionally, we have experienced, and could continue to experience, an increase in the costs of doing business, including increasing raw material prices and transportation costs, which have and could continue to have an adverse impact on our business, results of operations, financial condition and cash flows. See also Item 1A, “Risk Factors.”

Our A&D segment purchases supplies from a wide array of vendors. In most instances, multiple vendors of raw materials are screened during a qualification process to ensure that there will not be an interruption of supply should one of them underperform or discontinue operations. Nonetheless, in some situations, there is a risk of shortages due to reliance on a limited number of suppliers or because of price fluctuations due to the nature of the raw materials. For example, aerospace-grade titanium and gaseous helium, important raw materials for our A&D segment subsidiaries, may at times be in short supply.

Our USG segment manufactures electronic instrumentation through a network of regional contract manufacturers under long-term contracts. In general, USG purchases the same kinds of component parts as do other electronic products manufacturers, and these electronic components can be subject to supply chain constraints. USG purchases only a limited amount of raw materials.

Our Test segment is a vertically integrated supplier of electro-magnetic (EM) shielding and RF absorbing products, producing most of its critical RF components itself. This segment purchases significant quantities of raw materials such as polyurethane foam, polystyrene beads, steel, aluminum, copper, nickel and wood. Accordingly, it is subject to price fluctuations in the worldwide raw materials markets. While ETS-Lindgren has long-term contracts with a number of its suppliers, performance of these contracts is vulnerable to the risks described below and in Item 1A.

Competition

Competition in our major markets is broadly based and global in scope. This competition can be particularly intense during periods of economic slowdown, and we have experienced this in some of our markets. Although we are a leading supplier in several of the markets we serve, we maintain a relatively small share of the business in many of our other markets. Individual competitors range in size from annual revenues of less than $1 million to billion-dollar enterprises. Because of the specialized nature of our products, our competitive position with respect to our products cannot be precisely stated. In our major served markets, competition is driven primarily by quality, technology, price and delivery performance. See also Item 1A, “Risk Factors.”

Primary competitors of our A&D segment include Pall Corporation, Moog, Inc., Safran (Sofrance), CLARCOR Inc., TransDigm (PneuDraulics), Marotta Controls, and Parker Hannifin.

Significant competitors of our USG segment include OMICRON electronics Corp., Megger Group Limited, Vaisala, and Qualitrol Company LLC (a subsidiary of Fortive Corporation).

Our Test segment is a global leader in EM shielding. Significant competitors in this market include Rohde & Schwarz GMBH, Microwave Vision SA (MVG), TDK RF Solutions Inc., Albatross GmbH, IMEDCO AG, and Universal Shielding Corp.

Research and Development

Research and development and our technological expertise are important factors in our business. Our research and development programs are designed to develop technology for new products or to extend or upgrade the capability of existing products, and to enhance their commercial potential. We perform research and development at our own expense, and also engage in research and development funded by our customers. See Note 1 to the Consolidated Financial Statements for financial information about our research and development expenditures.

Environmental Matters and Government Regulation

We are involved in various stages of investigation and cleanup relating to environmental matters. It is difficult to estimate the potential costs of these matters and the possible impact of these costs on the Company at this time due in part to: the uncertainty regarding the extent of pollution; the complexity and changing nature of Government laws and regulations and their interpretations; the varying costs and effectiveness of alternative cleanup technologies and methods; the uncertain level of insurance or other types of cost recovery; the uncertain level of our responsibility for any contamination; the possibility of joint and several liability with other contributors under applicable law; and the ability of other contributors to make required contributions toward cleanup costs. Based on information currently available, we do not believe that the aggregate costs involved in the resolution of environmental matters or compliance with Governmental regulations will have a material adverse effect on our financial condition or results of operations.

Human Capital Management

As of September 30, 2021, we employed 2,822 persons, including 2,700 full time employees of whom 15% were located in 14 foreign countries.

As a responsible member of the communities in which we operate, we are dedicated to preserving operational excellence and remaining an employer of choice. We provide and maintain a work environment that attracts, develops and retains top talent by offering our employees an engaging work experience that contributes to their career development. Through our charitable Foundation and wellness activities we provide opportunities for meaningful civic involvement that not only support our communities but also provide experiences for our employees to promote a collaborative and rewarding work environment. We strive to maintain a culture that enables all employees to be treated with dignity and respect while devoting their best efforts to performing their jobs to the best of their abilities. We operate in a supportive culture that incorporates strong ethical behavior and reinforces our human rights commitment through annual ethics training which incorporates instruction on human rights, anti-human trafficking, and anti-harassment, as well as other areas of importance such as supervisory training on diversity and inclusion.

Our subsidiaries enjoy modest turnover at less than half the national average for our industry. Fewer than 4% of our workforce are contingent workers. We invest in creating a diverse, inclusive and safe work environment which will inspire our employees to give their best efforts every day. In fact, nearly half of our employee base comes from diverse backgrounds.

We generally conduct formal compensation benchmarking reviews every 1-2 years to ensure wages are competitive in local markets and support retention and recruiting efforts. Additionally, we invest time and resources in reviewing pay equity within our workforce. All full-time domestic and international employees are eligible for bonus or commission plans, most of which are designed to incentivize and reward performance based on results such as EPS, EBIT, cash flow, quality and backlog reduction, or other measures.

We recognize that our success is based on the talents and dedication of those we employ, and we are invested in their success. Significant investments are made in the areas of talent development, technical skills and compliance (ethics, safety, hazmat, ITAR, etc.). For succession planning purposes, we focus on identifying high-potential future leaders and working with them on individual development plans.

Our product development and manufacturing processes require a variety of manufacturing and testing tools and equipment. As a part of our commitment to the safety of our employees, customers, suppliers and third parties, we have established safety programs, policies, procedures and training requirements. Our local safety committees meet routinely throughout the year to ensure the safety of our employees, and that is reflected in our experience with lost time injuries, which is below industry incidence rates.

Throughout 2021, our attention continued to be focused on the effective handling of the COVID-19 pandemic and included maintaining the re-layout of many of our factory floors to ensure sufficient distancing in high density areas. We also installed shields, modified training programs to comply with distancing requirements, limited visitor entry, continued the use of virtual meetings, and adjusted shifts to aid in physical distancing. We also implemented the use of remote work arrangements and encouraged employees to receive, and provided time off for, vaccinations.

We are committed to the health and wellbeing of our employees and their families by encouraging participation in wellness programs. Generally, all our full-time employees, both domestic and international, are offered health and welfare benefits. We remain committed to our communities through financial support from our employees and the ESCO Foundation, and through personal participation of our employees with a variety of local organizations, such as, Family Outreach, the Boys & Girls Club, the United Way, and Special Olympics. We believe strong human capital is our competitive differentiator, and we focus not only on ensuring we have the right domestic and international talent in place to drive our strategic initiatives today, but well into the future.

Workforce Composition

(As of September 30, 2021)

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Minorities are defined to include individuals of Native American or Alaskan Native, Asian, Black or African American, Hispanic or Latino, Native Hawaiian or Other Pacific Islander, and Two or More Races.

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The above is based on employees’ self-identification or other information believed by the Company to be reliable, Some countries do not permit the collection or reporting of some or all of the above types of data.

Financing

For information about our credit facility, see Note 8 to the Consolidated Financial Statements, which is incorporated into this Item by reference.

COVID-19 Related Risks

The COVID-19 pandemic and its widespread effects on the United States and global economies may have a material adverse effect on our business which could continue for an unknown period of time.

The COVID-19 pandemic has significantly increased our economic, demand and operational uncertainty. The rapid worldwide spread of the COVID-19 virus, as well as the measures governments and private organizations have implemented in order to stem the spread of this pandemic, is resulting in significant worldwide disruptions and contractions in economic activity, including those resulting from “shelter in place” and similar orders, restrictions on non-essential business operations and travel, and increased unemployment. We have global operations, customers and suppliers, including in countries most impacted by COVID-19, and both the disease itself and the actions taken around the world to slow the spread of COVID-19 have impacted our customers and suppliers; and future developments could cause further disruptions to the Company due to the interconnected nature of our business relationships.

We have been and may continue to be subject to postponement or cancellation of certain contracts to which we are a party. We have also suffered a significant reduction in our commercial aircraft business due to slowdowns in OEM production and reduced flights, and this business is unlikely to return to pre-COVID levels for an unknown but possibly significant period of time. Current restrictions and conditions have and may continue to prevent or delay us in accessing customer facilities to deliver products and provide services, and disrupt or delay our supply chain. Even though our businesses have been classified as essential businesses and allowed to remain in operation in jurisdictions in which facility closures have been mandated, we can give no assurance that this will not change in the future or that our businesses will be classified as essential in each of the jurisdictions in which we operate. Further, although we have implemented prevention measures at our own facilities, including enhanced cleaning procedures, social distancing efforts and working from home where feasible, and substantially all of our facilities have so far remained in business, we have occasionally incurred short-term disruptions in some facility operations, and due to the nature of the COVID-19 pandemic there can be no assurance that we will not suffer facility closures or other adverse effects on our business operations in the future.

The facilities of our suppliers and customers have experienced, and may continue to experience, disruptions in manufacturing and supply arrangements due to the loss or disruption of critical manufacturing and supply elements, such as raw materials or other finished product components, transportation, workforce or other manufacturing and distribution capability. We may also experience failure of third parties on which we rely, including our suppliers, distributors and contractors, to meet their obligations to us, or significant restrictions in their ability to do so. In addition, our compliance with applicable safety requirements may cause us to lose critical employees who are unwilling or unable to comply with the requirements.

These facts and circumstances may have a material adverse effect on our business, results of operations, financial condition and cash flows. The extent to which the COVID-19 pandemic will impact our business, results of operations, financial condition and cash flows in the future, and the length of time these impacts may continue, will depend on future developments that are highly uncertain and cannot be predicted at this time, including new information that may emerge concerning the severity of COVID-19, the longevity of COVID-19 and the actions to contain its impact.

Risks Related to our Governmental and Aerospace Business

Our sales of products to the Government depend upon continued Government funding.

Sales to the U.S. Government and its prime contractors and subcontractors represent a significant portion of our business. Over the past three fiscal years, from 21% to 28% of our revenues have been generated from sales to the U.S. Government or its contractors, primarily within our A&D segment. These sales are dependent on government funding of the underlying programs, which is generally subject to annual Congressional appropriations. There could be reductions or terminations of, or delays in, the government funding on programs which apply to us or our customers. These funding effects could adversely affect our sales and profit, and could bring about a restructuring of our operations, which could result in an adverse effect on our financial condition or results of operations. A significant portion of VACCO’s, Westland’s and Globe’s sales involve major U.S. Government programs such as NASA’s Space Launch System (SLS) and U.S. Navy submarines. A reduction or delay in Government spending on these programs could have a significant adverse impact on our financial results which could extend for more than a single year.

Our Government business increases the risk that we may not realize the full amount of our backlog.

As of September 30, 2021, our twelve-month backlog was approximately $441 million, which represents confirmed orders we believe will be recognized as revenue within the next twelve months. There can be no assurance that our customers will purchase all the orders represented in our backlog, particularly as to contracts which are subject to the U.S. Government’s and its subcontractors’ ability to modify or terminate major programs or contracts, and if and to the extent that this occurs, our future revenues could be materially reduced.

The end of customer product life cycles could negatively affect our A&D segment’s results.

Many of our A&D segment products are sold to be components in our customers’ end-products. If a customer discontinues a certain end-product line, our ability to continue to sell those components will be reduced or eliminated. The result could be a significant decrease in our sales. For example, a substantial portion of PTI’s revenue is generated from commercial aviation aftermarket sales. As certain aircraft are retired and replaced by newer aircraft, there could be a corresponding decrease in sales associated with our current products. Such a decrease could adversely affect our operating results.

Risks Related to our International Business

Negative worldwide economic conditions and related credit shortages could result in a decrease in our sales and an increase in our operating costs, which could adversely affect our business and operating results.

If there is a worsening of global and U.S. economic and financial market conditions and additional tightening of global credit markets, many of our customers may further delay or reduce their purchases of our products. Uncertainties in the global economy may cause the utility industry and commercial market customers to experience shortages in available credit, which could limit capital spending. To the extent this problem affects our customers, our sales and profits could be adversely affected. Likewise, if our suppliers face challenges in obtaining credit, they may have to increase their prices or become unable to continue to offer the products and services we use to manufacture our products, which could have an adverse effect on our business, results of operations and financial condition.

Increases in tariffs or other changes in trade policies could adversely affect our ability to compete.

In addition to the effects of increases in market prices, increases in domestic import tariffs could increase the prices to us of our foreign-sourced raw materials and product components and thereby require us to either increase our selling prices or accept reduced margins. In the case of ETS-Lindgren, for example, tariffs on imports of Chinese goods have raised the costs of components purchased by it either from its China facility or from other Chinese suppliers, and its margins in China have been impacted by the increased costs of its products made in the U.S. and sold through its Chinese business.

In addition, increases in foreign-country tariffs applicable to our exported products could increase the effective prices of our products to our customers in those countries unless we are able to offset the tariffs by reducing our selling prices. Any or all of these factors could decrease the demand for our products, reduce our profitability, and/or make our products less competitive than those of other manufacturers that are not subject to the same tariffs. For example, since 2019 increased tariffs imposed by China on U.S. origin goods have adversely affected sales of NRG’s products in China by increasing their prices to Chinese customers.

In addition, trade restrictions against certain foreign-made products or entities may adversely affect our business and our ability to compete in certain markets. Our business may also be impacted by the ongoing trade tensions between the U.S. and China which are causing U.S. goods to be viewed in a less favorable light by Chinese customers.

Our international operations expose us to fluctuations in currency exchange rates that could adversely affect our results of operations and cash flows.

We have significant manufacturing and sales activities in foreign countries, and our domestic operations have sales to foreign customers. Our financial results may be affected by fluctuations in foreign currencies and by the translation of the financial statements of our foreign subsidiaries from local currencies into U.S. dollars, and we may not be able to adequately or successfully hedge against these risks. In addition, a rise in the dollar against foreign currencies could make our products more expensive for foreign customers and cause them to reduce the volume of their purchases.

Economic, political and other risks of our international operations, including terrorist activities, could adversely affect our business.

In 2021, approximately 28% of our net sales were to customers outside the United States. Increases in international tariffs resulting from changes in domestic or foreign trade policies could increase the costs of the raw materials used in our products and/or the costs of our products. In addition, an economic downturn or an adverse change in the political situation in certain foreign countries in which we do business could cause a decline in revenues and adversely affect our financial condition. For example, our Test segment does significant business in Asia, and changes in the Asian political climate or political changes in specific Asian countries could negatively affect our business; several of our subsidiaries are based in Europe and could be negatively impacted by weakness in the European economy; and Doble’s future business in the Middle East could be adversely affected by continuing political unrest, wars and terrorism in the region.

Our international sales are also subject to other risks inherent in foreign commerce, including currency fluctuations and devaluations, differences in foreign laws, uncertainties as to enforcement of contract or intellectual property rights, and difficulties in negotiating and resolving disputes with our foreign customers.

Our governmental sales and our international and export operations are subject to special U.S. and foreign government laws and regulations which may impose significant compliance costs, create reputational and legal risk, and impair our ability to compete in international markets.

The international scope of our operations subjects us to a complex system of commercial and trade regulations around the world, and our foreign operations are governed by laws and business practices that often differ from those of the U.S. In addition, laws such as the U.S. Foreign Corrupt Practices Act and similar laws in other countries increase the need for us to manage the risks of improper conduct not only by our own employees but by distributors and contractors who may not be within our direct control. Many of our exports are of products which are subject to U.S. Government regulations and controls such as the U.S. International Traffic in Arms Regulations (ITAR), which impose certain restrictions on the U.S. export of defense articles and services, and these restrictions are subject to change from time to time, including changes in the countries into which our products may lawfully be sold.

If we were to fail to comply with these laws and regulations, we could be subject to significant fines, penalties and other sanctions including the inability to continue to export our products or to sell our products to the U.S. Government or to certain other customers. In addition, some of these regulations may be viewed as too restrictive by our international customers, who may elect to develop their own domestic products or procure products from other international suppliers which are not subject to comparable export restrictions; and the laws, regulations or policies of certain other countries may also favor their own domestic suppliers over foreign suppliers such as the Company.

Risks Related to our Manufacturing and Sales Operations and Technology

Disruptions of Our Information Technology Systems, or Information Security and/or Data Privacy Breaches, Could Adversely Affect Our Business.

We have many information technology systems that are important to the operation of our businesses, some of which are managed by third parties. These systems are used to obtain, process, transmit and store electronic information and to manage or support a variety of

integral business processes and activities. Our primary and backup computer systems are vulnerable to damage, disruptions or shutdowns during the process of upgrading or replacing software, databases or components and from power outages, computer and telecommunication failures, security breaches, natural disasters and errors by employees. Any failure in the operation of our information technology systems could adversely affect our businesses or operating results. Although losses arising from some of these issues may be covered by information security insurance, we cannot guarantee that our coverage will be adequate for all costs or losses incurred.

Global information technology security threats and targeted computer crime are increasing in frequency and sophistication and pose a risk to the security of our systems and networks and the confidentiality, availability and integrity of our data and communications. We attempt to mitigate these risks through numerous measures, including employee training and testing, comprehensive monitoring of our networks and systems, and maintenance of backup and protective systems. Although we do not believe we have experienced a material information security breach in the last three years, and we have incurred no fines, settlement costs or other material expenses related to information security breaches, if we were to experience such a breach it could adversely affect our reputation and result in litigation, regulatory action, liability for fines, penalties and related expenses, and costs of implementing additional data protection procedures. In addition, even though we generally do not conduct business directly with retail or individual customers or consumers we must comply with increasingly complex and rigorous regulatory standards enacted to protect business and personal data in the U.S. and elsewhere. Compliance with data privacy laws and regulations increases operational complexity, and failure to comply with legal or regulatory standards could subject us to fines and penalties, as well as legal and reputational risks, including proceedings against us by governmental entities or others. Although we maintain insurance coverage for data privacy risks, we cannot guarantee that our coverage will be adequate for all costs or losses incurred.

A significant part of our manufacturing operations depends on a small number of third-party suppliers.

A significant part of our manufacturing operations relies on a small number of third-party manufacturers to supply component parts or products. For example, Doble has arrangements with six manufacturers which produce and supply a substantial portion of its end-products, and one of these suppliers produces approximately 35% of Doble’s products from a single location within the United States. As another example, PTI has a single supplier of critical electronic components for a significant aircraft production program, and if this supplier were to discontinue producing these components the need to secure another source could pose a risk to the production program. A significant disruption in the supply of those products or others provided by a small number of suppliers could negatively affect the timely delivery of products to customers as well as future sales, which could increase costs and reduce margins.

Certain of our other businesses are dependent upon sole source or a limited number of third-party manufacturers of parts and components. Many of these suppliers are small businesses. Since alternative supply sources are limited, there is an increased risk of adverse impacts on our production schedules and profits if our suppliers were to default in fulfilling their price, quality or delivery obligations. In addition, some of our customers or potential customers may prefer to purchase from a supplier which does not have such a limited number of sources of supply.

Increases in prices of raw material and components, and decreased availability of such items, could adversely affect our business.

The cost of raw materials and product components is a major element of the total cost of many of our products. For example, our Test segment’s critical components rely on purchases of raw materials from third parties. Increases in the prices of raw materials (such as steel, copper, nickel, zinc, wood and petrochemical products) could have an adverse impact on our business by, among other things, increasing costs and reducing margins. Aerospace-grade titanium and gaseous helium, important raw materials for our A&D segment, may at times be in short supply; in addition, although we try to tie our supplier pricing to long-term contracts this is not always possible, and we are experiencing price inflation on a number of products. Further, some of Doble’s items of equipment which are provided to its customers for their use are in the maturity of their life cycles, which creates the risk that replacement components may be unavailable or available only at increased costs. Doble has experienced COVID-related short term disruptions in the supply chain which have periodically resulted in extended lead times and cost increases, and the long term impacts of these disruptions are uncertain. See also “COVID-19 Related Risks” above.

In addition, our reliance on sole or limited sources of supply of raw materials and components in each of our segments could adversely affect our business, as described in the preceding Risk Factor. The potential physical impacts of climate change, such as increased frequency and severity of storms, floods and other climatic events, could disrupt our supply chain, and cause our suppliers to incur significant costs in preparing for or responding to these effects. These and other weather-created disruptions in supply, in addition to affecting costs, could impact our ability to procure an adequate supply of these raw materials and components, and delay or prevent deliveries of products to our customers. The entire electronics industry is currently disrupted due to limited sources of supply, and we

are subject to the same supply chain risks as other manufacturers of products containing electronic components. See also “COVID-19 Related Risks” above.

Our inability to timely develop new products could reduce our future sales.

Much of our business is dependent on the continuous development of new products and technologies to meet the changing needs of our markets on a cost-effective basis. Many of these markets are highly technical from an engineering standpoint, and the relevant technologies are subject to rapid change. If we fail to timely enhance existing products or develop new products as needed to meet market or competitive demands, we could lose sales opportunities, which would adversely affect our business. In addition, in some existing contracts with customers, we have made commitments to develop and deliver new products. If we fail to meet these commitments, the default could result in the imposition on us of contractual penalties including termination. Our inability to enhance existing products in a timely manner could make our products less competitive, while our inability to successfully develop new products may limit our growth opportunities. Development of new products and product enhancements may also require us to make greater investments in research and development than we now do, and the increased costs associated with new product development and product enhancements could adversely affect our operating results. In addition, our costs of new product development may not be recoverable if demand for our products is not as great as we anticipate it to be.

Product defects or customer claims could result in costly fixes, litigation and damages.

Our business exposes us to potential product liability risks that are inherent in the design, manufacture and sale of our products and the products of third-party vendors which we use or resell, many of which are mission-critical to our customers. If there are claims related to defective products (under warranty or otherwise), particularly in a product recall situation, we could be faced with significant expenses in replacing or repairing the product. For example, the A&D segment obtains raw materials, machined parts and other product components from suppliers who provide certifications of quality which we rely on. Should these product components be defective and pass undetected into finished products, or should a finished product contain a defect, we could incur significant costs for repairs, re-work and/or removal and replacement of the defective product. In addition, if a dispute over product claims cannot be settled, arbitration or litigation may result, requiring us to incur attorneys’ fees and exposing us to the potential of damage awards against us.

A major portion of our Test segment’s business involves working in conjunction with general contractors to produce complex building components constructed on-site, such as electronic test chambers, secure communication rooms and MRI facilities. If there are performance problems caused by either us or a contractor, they could result in cost overruns and may lead to a dispute as to which party is responsible. The resolution of such disputes can involve arbitration or litigation, and can cause us to incur significant expense including attorneys’ fees. In addition, these disputes could result in a reduction in revenue, a loss on a particular project, or even a significant damages award against us.

Despite our efforts, we may be unable to adequately protect our intellectual property.

Much of our business success depends on our ability to protect and freely utilize our various intellectual properties, including both patents and trade secrets. Despite our efforts to protect our intellectual property, unauthorized parties or competitors may copy or otherwise obtain and use our products and technology, particularly in foreign countries such as China where the laws may not protect our proprietary rights as fully as in the United States. Our current and future actions to enforce our proprietary rights may ultimately not be successful; or in some cases we may not elect to pursue an unauthorized user due to the high costs and uncertainties associated with litigation. We may also face exposure to claims by others challenging our intellectual property rights. Any or all of these actions may divert our resources and cause us to incur substantial costs.

Environmental laws and regulations or environmental contamination could increase our expenses and adversely affect our profitability.

Our operations and properties are subject to U.S. and foreign environmental laws and regulations governing, among other things, the generation, storage, emission, discharge, transportation, treatment and disposal of hazardous materials and the clean-up of contaminated properties. In addition, governments around the world are increasingly focused on enacting laws and regulations regarding climate change and regulation of greenhouse gases. These regulations, and changes to them, could increase our cost of compliance, and our failure to comply could result in the imposition of significant fines, suspension of production, alteration of

product processes, cessation of operations or other actions which could materially and adversely affect our business, financial condition and results of operations.

We are currently involved as a responsible party in several ongoing investigations and remediations of contaminated third-party owned properties. In addition, environmental contamination may be discovered in the future on properties which we formerly owned or operated and for which we could be legally responsible. Future costs associated with these situations, including ones which may be currently unknown to us, are difficult to quantify but could have a significant effect on our financial condition. See Item 1, “Business – Environmental Matters” for a discussion of these factors.

Risks Related to Our Business Strategy and Corporate Structure

Changes in testing standards could adversely impact our Test and USG segments’ sales.

A significant portion of the business of our USG and Test segments involves sales to technology customers who need to have a third party verify that their products meet specific international and domestic test standards. If regulatory agencies were to eliminate or reduce certain domestic or international test standards, or if demand for product testing from these customers were to decrease for some other reason, our sales could be adversely affected. For example, if a regulatory authority were to relax the test standards for certain electronic devices because they were determined not to interfere with the broadcast spectrum, or if new wireless communication technologies were developed that required less testing or different types of testing, our sales of certain testing products could be significantly reduced.

We may not be able to identify suitable acquisition candidates or complete acquisitions successfully, which may inhibit our rate of growth.

As part of our growth strategy, we plan to continue to pursue acquisitions of other companies, assets and product lines that either complement or expand our existing business. However, we may be unable to implement this strategy if we are unable to identify suitable acquisition candidates or consummate future acquisitions at acceptable prices and terms. We expect to face competition for acquisition candidates which may limit the number of acquisition opportunities available to us and may result in higher acquisition prices. As a result, we may be limited in the number of acquisitions which we are able to complete and we may face difficulties in achieving the profitability or cash flows needed to justify our investment in them.

Our acquisitions of other companies carry risk.

Acquisitions of other companies involve numerous risks, including difficulties in the integration of the operations, technologies and products of the acquired companies, the potential exposure to unanticipated and undisclosed liabilities, the potential that expected benefits or synergies are not realized and that operating costs increase, the potential loss of key personnel, suppliers or customers of acquired businesses and the diversion of Management’s time and attention from other business concerns. Although we attempt to identify and evaluate the risks inherent in any acquisition, we may not properly ascertain or mitigate all such risks, and our failure to do so could have a material adverse effect on our business.

We may incur significant costs, experience short-term inefficiencies, or be unable to realize expected long-term savings from facility consolidations and other business reorganizations.

We periodically assess the cost and operational structure of our facilities in order to manufacture and sell our products in the most efficient manner, and based on these assessments, we may from time to time reorganize, relocate or consolidate certain of our facilities. These actions may require us to incur significant costs and may result in short term business inefficiencies as we consolidate and close facilities and transition our employees; and in addition, we may not achieve the expected long-term benefits. Any or all of these factors could result in an adverse impact on our operating results, cash flows and financial condition.

Our inability to hire or retain qualified key employees could affect our performance and revenues.

There is a risk of our losing key employees having engineering and technical expertise. For example, our USG segment relies heavily on engineers with significant experience and reputation in the utility industry to furnish expert consulting services and support to customers, and our other segments similarly rely on qualified and experienced employees to carry on their businesses. Despite our active recruitment efforts, there remains a shortage of these qualified engineers and other employees because of hiring competition

from other companies in the industry and a generally tight labor market, possibly exacerbated by COVID-related retirements or career changes. Losing current employees or qualified candidates to other employers or for other reasons could reduce our ability to provide services and negatively affect our revenues.

Our decentralized organizational structure presents certain risks.

We are a relatively decentralized company in comparison with some of our peers. This decentralization necessarily places significant control and decision-making powers in the hands of local management, which present various risks, including the risk that we may be slower or less able to identify or react to problems affecting a key business than we would in a more centralized management environment. We may also be slower to detect or react to compliance related problems (such as an employee undertaking activities prohibited by applicable law or by our internal policies), and Company-wide business initiatives may be more challenging and costly to implement, and the risks of noncompliance or failures higher, than they would be under a more centralized management structure. Depending on the nature of the problem or initiative in question, such noncompliance or failure could have a material adverse effect on our business, financial condition or result of operations.

Provisions in our articles of incorporation, bylaws and Missouri law could make it more difficult for a third party to acquire us and could discourage acquisition bids or a change of control, and could adversely affect the market price of our common stock.

Our articles of incorporation and bylaws contain certain provisions which could discourage potential hostile takeover attempts, including: a limitation on the shareholders’ ability to call special meetings of shareholders; advance notice requirements to nominate candidates for election as directors or to propose matters for action at a meeting of shareholders; a classified board of directors, which means that approximately one-third of our directors are elected each year; and the authority of our board of directors to issue, without shareholder approval, preferred stock with such terms as the board may determine. In addition, the laws of Missouri, in which we are incorporated, require a two-thirds vote of outstanding shares to approve mergers or certain other major corporate transactions, rather than a simple majority as in some other states such as Delaware. These provisions could impede a merger or other change of control not approved by our board of directors, which could discourage takeover attempts and in some circumstances reduce the market price of our common stock.

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Item 1B. Unresolved Staff Comments

None

Item 2. Properties

We believe our buildings, machinery and equipment have been generally well maintained, are in good operating condition and are adequate for our current production requirements and other needs.

At September 30, 2021, our physical properties, including those described in the table below, comprised approximately 1,558,000 square feet of floor space, of which approximately 680,000 square feet were owned and approximately 878,000 square feet were leased. The table below includes our principal physical properties. We do not believe any of the omitted properties, consisting

PART II

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

Holders of Record.As of November 20, 2021, there were approximately 1,836 holders of record of our common stock.

Price Range of Common Stock and Dividends. Our common stock is listed on the New York Stock Exchange; its trading symbol is “ESE”.

Company Purchases of Equity Securities. For information about our common stock repurchase programs, please refer to Note 9 to the Consolidated Financial Statements. We did not repurchase any shares of our common stock during the fourth quarter of fiscal 2021.

Securities Authorized for Issuance Under Equity Compensation Plans. For information about securities authorized for issuance under our equity compensation plans, please refer to Item 12 of this Form 10-K and to Note 10 to the Consolidated Financial Statements.

Performance Graph.The graph and table on the following page present a comparison of the cumulative total shareholder return on our common stock as measured against the cumulative total returns of the Russell 2000 index, which is a broad equity market index, and the S&P SmallCap 600 Industrials index, which is a published industry index designed to measure the performance of small-cap companies that are classified as members of the GICS Industrials sector. The Company is a component of both the Russell 2000 index and the S&P SmallCap 600 Industrials index.

We determined to use the S&P SmallCap 600 Industrials index for comparison beginning in 2021 rather than using a peer group of individual companies as we had done in prior years, because of the difficulty of finding comparable companies to select for the peer group and the frequent changes in the selected peer group from year to year necessitated by acquisitions, mergers or other transactions.

Because of this change, we also show the returns for the six remaining public companies in the customized peer group we used in 2020: CIRCOR International, Inc., Donaldson Company, Inc., Moog Inc., Ameresco, Inc., Thermon Group Holdings, Inc. and FARO Technologies, Inc. In calculating the composite return of the modified 2020 peer group, we weighted the return of each of the companies by (a) its market capitalization in relation to the other companies in its corresponding Company industry segment, and (b) the percentage of the Company’s total revenue from continuing operations represented by its corresponding Company industry segment.

The measurement period begins on September 30, 2016 and measures at each September 30 thereafter. These figures assume that all dividends, if any, paid over the measurement period were reinvested, and that the starting values of each index and the investments in our common stock and the modified 2020 peer group were $100 at the close of trading on September 30, 2016.

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Item 6. [Reserved]

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

The following discussion should be read in conjunction with the Consolidated Financial Statements and Notes thereto and refers to our results from continuing operations except where noted.

Selected financial information for each of our business segments is provided in the discussion below and in Note 12 to the Company’s Consolidated Financial Statements.

This section includes comparisons of certain 2021 financial information to the same information for 2020. Year-to-year comparisons of the 2020 financial information to the same information for 2019 are contained in Item 7 of our Form 10-K for 2020 filed with the Securities and Exchange Commission on November 30, 2020 and available through the SEC’s website at https://www.sec.gov/edgar/searchedgar/companysearch.html.

Introduction

We classify our business operations into three segments for financial reporting purposes, although for reporting certain financial information we treat Corporate activities as a separate segment. Our three operating segments during 2021 were Aerospace & Defense (A&D), Utility Solutions Group (USG), and RF Shielding and Test (Test). Our operating segments are comprised of the following primary operating subsidiaries: