Table of Contents

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PART I

Item 1. Business.

Cautionary Statement Regarding Forward-Looking Statements

Explanatory NoteCertain matters discussed in this Annual Report on Form 10-K contain forward-looking statements that involve risks and uncertainties, such as statements related to future events, business strategy, future performance, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management. All statements other than statements of historical fact may be forward-looking statements. Forward-looking statements are often, but not always, identified by the use of words such as “seek,” “anticipate,” “plan,” “continue,” “estimate,” “expect,” “may,” “will,” “project,” “predict,” “potential,” “targeting,” “intend,” “could,” “might,” “should,” “believe” and similar expressions or their negative. Forward-looking statements should not be read as a guarantee of future performance or results, and will not necessarily be accurate indications of the times at, or by, which such performance or results will be achieved. Forward-looking statements are based on management’s belief, based on currently available information, as to the outcome and timing of future events. These statements involve estimates, assumptions, known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those expressed in such forward-looking statements. Mayville Engineering Company, Inc. (MEC, the Company, we, our, us or similar terms) believes the expectations reflected in the forward-looking statements contained in this Annual Report on Form 10-K are reasonable, but no assurance can be given that these expectations will prove to be correct. Forward-looking statements should not be unduly relied upon.

Important factors that could cause actual results or events to differ materially from those expressed in forward-looking statements include, but are not limited to, those described in “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10-K for the year ended December 31, 2023, as such may be amended or supplemented in Part II, Item 1A of our subsequently filed Quarterly Reports on Form 10-Q, and the following:

These factors are not necessarily all of the important factors that could cause actual results or events to differ materially from those expressed in forward-looking statements. Other unknown or unpredictable factors could also cause actual results or events to differ materially from those expressed in the forward-looking statements. All forward-looking statements attributable to us are qualified in their entirety by this cautionary statement. Forward-looking statements speak only as of the date hereof. We undertake no obligation to update or revise any forward-looking statements after the date on which any such statement is made, whether as a result of new information, future events or otherwise, except as required by federal securities laws.

General

Mayville Engineering Company, Inc. (MEC) is filinga leading U.S.-based, vertically integrated, value-added manufacturing partner providing a full suite of manufacturing solutions from concept to production, including design, prototyping and tooling, fabrication, aluminum extrusion, coating, assembly and aftermarket components. Our customers operate in diverse end markets, including heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, agriculture, military and other end markets. We have developed long-standing relationships with our blue-chip customers based upon our commitment to “Unmatched Excellence”. We provide a diverse set of process offerings and a one-source solution with benefits throughout the entire product lifecycle, including front-end collaboration in design and prototyping, product manufacturing, aftermarket components and ancillary supply chain benefits. Founded as a corporation in 1945 and headquartered in Milwaukee, Wisconsin, we are a leading Tier I U.S. supplier of highly engineered components to original equipment manufacturer (OEM) customers with leading positions in their respective markets. We are focused on producing the highest quality components using complex processes at the lowest cost by working with customers throughout the product design and development process to establish optimal solutions. Our engineering expertise and technical know-how allow us to add value through every product redevelopment cycle (generally every three to five years for our customers). According to The Fabricator magazine, we have been ranked as the largest fabricator in the United States for the past 13 years in a row (2011 – 2023).

Our customers’ complex products require a unique combination of our capabilities that allow us to achieve a customized offering to satisfy our customers’ desired outcomes. Our capabilities, which include, but are not limited to: metal fabrication, metal stamping, aluminum extrusion and fabrication, tube bending and forming, robotic part forming, robotic welding, resistance welding, five-axis tube and fiber laser cutting and custom coatings, including high heat and chemical agent resistant coating (CARC) painting, are used in a variety of applications and represent the building blocks of what we produce.

Our key customers have globally recognized brands and demand the highest product quality and expertise. Over our more than 75-year history, we have developed capabilities and provided solutions that result in customer loyalty and long-standing relationships, which we call “The MEC Advantage”. We have a diverse and market-leading customer base that serves broad end markets representing favorable near- and long-term growth prospects for us. We have a track record of growth and are well-positioned to increase our market share and benefit from the growth in customer demand as well as the secular trends of reshoring and outsourcing across the end markets that we serve. To help pursue our strategic mission, we have approximately 2,500 employees who are tactically aligned around our core values. We are led by an experienced management team that has contributed to our growth by establishing deep and long-standing relationships with key customers and has worked to expand the customer base both organically and through strategic acquisitions.

We maintain an established base of long-standing customers comprised of leading, blue-chip OEM manufacturers across the United States. Our broad capabilities offering and track record of producing the highest quality solutions have allowed us to establish, and subsequently deepen, relationships with additional products and platforms over time. For example, our more than 40-year relationship with Deere & Company (John Deere) began with a small order of simple stamped parts for a farm tractor in its agricultural segment that expanded over time and represented 2023 sales in excess of $87 million across five market segments, representing over 65 model platforms. We have also been successful in winning customers and rapidly expanding relationships with high-growth customers by utilizing our complete product lifecycle management offering. For instance, we began our relationship with a powersports company less than ten years ago, starting with our expertise in performance structure suspension components, and we have been able to expand our relationships into tubes, fabrications and finished goods assemblies. Through this Amendment No. 2expansion, with product shipping from multiple facilities, we have been able to deepen our relationship and expand our market position through each of their new product updates, solidifying us as a strategic partner.

We serve our customers through 23 strategically located U.S. facilities, across seven states, with more than three million square feet of manufacturing capacity. Our expansive footprint enables us to service and maintain strong relationships with existing key customers across the United States with a “local” presence, as well as target new customer opportunities. Coupled with our focus on market alignment and execution, we constantly strive to improve and refine capabilities, capacities and reduce our carbon footprint. In addition, the ongoing investment in flexible, re-deployable automation allows us to expand output while reducing cost and improving quality, productivity and consistency for margin enhancement and market leading competitiveness.

Our historical success is a function of our engineering expertise, extensive manufacturing capabilities, limited commodity exposure, investment in automation and embedded relationships with the contractual ability to pass through variability in commodity prices. We believe we are poised to grow through economic cycles due to our:

Our diversified profile today best positions us for stability and leading market performance through all phases of an economic cycle.

Our Industry

We compete in the highly fragmented market of contract manufacturers, the majority of which are small local players that are limited in scale, capabilities and technology. Many of these local manufacturers have single or limited production capabilities and provide niche components in specific geographic markets. Accordingly, there are a limited number of competitors in the value-added manufacturing market in which we operate with the capacity and expertise to deliver the complete product lifecycle of solutions we offer. For example, our diverse manufacturing capabilities across product lines have contributed to us being selected the Largest Fabricator by The Fabricator magazine’s “FAB 40” listing in the desirable U.S. markets for the past 13 years in a row (2011 – 2023). While we compete with certain manufacturers across selected product lines, we believe that no single manufacturer directly competes with us across our full offering and end market applications.

Our end market diversification coupled with our extensive product breadth allows us to maintain financial stability as individual end markets fluctuate. The primary end markets we serve include heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, agriculture and military, among others. As markets strengthen or weaken, our output is redirected and realigned to support ongoing change. Further, as these fluctuations affect the market, we are favorably positioned to benefit from the broader trend of our OEM customers consolidating to fewer and more sophisticated suppliers in order to improve quality and delivery while lowering the total cost of doing business. This consolidation trend will allow us to grow and protects our cash flow as markets change and shift.

We have also experienced, and benefitted from, OEM trends seeking to improve their strategy execution and simplify their business through outsourcing and reshoring. Based on our history, OEMs pursue a strategy that focuses on core component market differentiation, such as structural frames and complete powertrain assemblies, and prefer to outsource the remaining product components to third parties rather than manufacturing them in-house. This is done in order to maintain their strategic focus, drive cost savings and reduce their own investment in manufacturing, thereby allowing them to focus on the most important aspects of their value creation process, namely product design and development, final product assembly and testing, branding, sales, marketing and distribution. While each specific OEM differs in its strategy, we see these trends continuing as customers deal with workforce and supply chain constraints and look for optimum return on investments while improving cash flow. Moreover, our OEM customers focus on the production of the core components of their products, which leads them to rely on outsourced providers like us for the remaining components of their finished product needs. OEMs are also continuing to bring production back to the US and simplifying their supply chain processes. We believe we will benefit from this continued shift in our customers’ focus and ongoing desire for OEMs to improve efficiencies, reduce costs and simplify supply chains. Our established and embedded relationships, breadth of capabilities and scalability will allow us to streamline the supply chain process for our customers by acting as a single point of contact in the supply chain. In addition, we believe OEMs are increasingly favoring platforms supported by larger, more sophisticated and financially stable suppliers with the ability to serve large national and international operations all while maintaining a local touch. Our extensive manufacturing footprint, competitive cost structure and integrated design, engineering, production planning and quality program management capabilities position us favorably to take advantage of these opportunities and trends.

Our Competitive Strengths

As an industry-leading value-added manufacturing partner, our commitment to "Unmatched Excellence" is the cornerstone that attracts our customers. We thrive on strategic collaboration, actively engaging with our customers to create alignment and become an integral part of their product development and manufacturing processes. Leveraging our deep engineering expertise, we support prototype, production, and aftermarket needs, delivering cost-effective and robust solutions. With the industry's most expansive process capabilities, we embody agility, speed, and unmatched capability, allowing us to efficiently support a diverse range of products and solutions. “The MEC Advantage” is not just a concept; it's the driving force behind our operations, ensuring that every project benefits from our manufacturing expertise and customer-centric approach. Focusing on forward-thinking innovation, reliability, and excellence, our engineering expertise and technical know-how allow us to add value through every product redevelopment cycle, typically occurring every three to five years for our customers. Positioned as the go-to partner, we are dedicated to building long-lasting partnerships and delivering solutions that consistently exceed our customers’ expectations.

Value-Added Supply Chain Partner with Embedded Relationships. Our embedded relationships with our large and diverse customer base are driven by the commitment to excellence our employees take in their work, which emphasizes the highest quality and performance in all facets of our business, including our ability to partner with our customers and deliver to them complex solutions across a wide range of products. Our unique, end-to-end offering provides solutions throughout the lifecycle of a product, including upfront product manufacturability advice and prototyping, production volumes and aftermarket components. We strive to maintain operation alignment (and continuous re-alignment) with our customers’ strategy and production activities as they evolve, allowing us to remain agile in response to market changes, while enabling our customers to be successful, and remain adaptable to changes to retain flexibility and adjust appropriately. Our focus on collaboration with our customers and our breadth of capabilities also generates strategic alignment with our customers, resulting in deep-rooted relationships, driving vendor reduction and providing other ancillary benefits such as optimization of working capital investments. Our track record of engineering expertise has resulted in our consistent inclusion in customer design and prototyping activities, enabling customers to view us as an invaluable extension of their own teams. In turn, this collaboration allows our customers to focus on the development of their core technologies and products. Our position as a deeply embedded supply chain partner of scale allows us to provide a multitude of solutions, driving strong customer relationships with high switching costs.

Leading and Defendable Market Position in Attractive North American Market. According to the Fabricator magazine, we have been ranked as the largest fabricator in the United States for the past 13 years in a row (2011 – 2023). The market is highly fragmented and characterized by high barriers to entry given the complex nature of the work, established relationships and high customer switching costs. While there are numerous competitors in the markets in which we operate, few maintain the product breadth, manufacturing capabilities, scale or engineering expertise that we do. Our depth of capabilities allows us to offer our customers:

Breadth of Capabilities Appealing to a Variety of Applications. We have many manufacturing capabilities that together represent the building blocks for the complex solutions we provide to our customers. We maintain a full spectrum of capabilities across our 23 facilities to address a wide set of customer needs, including upfront product development advice and prototyping, unique manufacturing processes and capabilities across a variety of products and back-end finishing, assembly and aftermarket components representing a unique end-to-end offering. Our range of capabilities combined with our breadth of components, including fabrications, tubes, tanks, and performance structures, expands the applicable uses and end markets in which we may offer our components. Throughout our history, our capabilities have allowed us to generate growth by expanding into new verticals and by further penetrating existing verticals through cross-selling to increase wallet share, a strategy that has driven deep-rooted relationships with our customers. Further, our unique combination of manufacturing processes allows us to opportunistically target sophisticated, higher margin business. The diversity of our offering has provided our Company with financial stability through various end market and economic cycles.

Technology-Enabled Infrastructure. We continue to invest in a technology-enabled asset base that provides significant flexible and re-deployable capacity to support our planned growth, increases profitability, efficiency, quality and employee safety, reduces spend on energy and drives a long-term cost advantage over our competitors. We have leveraged our purchasing power to make significant investments in operational infrastructure throughout our history, in items such as flexible and re-deployable automation and capacity improvements to enhance throughput, quality and consistency. For example, we were one of the first in our industry to adopt fiber lasers and have continued to invest in this capability. Throughout the past couple of years, we have implemented 10,000- and 12,000-watt fiber lasers with an automation tower, which are on average three times faster, provide a cleaner, more precise cut and use one-third the power of traditional CO2 lasers, with a payback period of less than two years. Additionally, the implementation of robotic brakes has improved quality through a continued shift towards precision automation. By reducing setup procedures, manual employee lifting requirements and downtime while offering additional capacity, the implementation of robotic brakes has resulted in a payback period of approximately two years. These two examples of investments in technology-enabled infrastructure allow us to reallocate our workforce, as employees can be retrained and redeployed into more technically skilled positions. In today’s ever-changing labor market, the ability to redeploy labor to increase flexibility and capacity for our customers is of the utmost importance and interest. Our investments in continuous improvement and automation have driven operational efficiencies and improved metric tracking allowing our management team to more effectively run the business and improve the value we provide to our customers. We have, from time-to-time, made strategic, customer-driven investments that directly support new product and market expansion which result in further competitive advantages and higher switching costs for our customers.

Cost Structure and Operational Excellence. We have reduced our exposure to commodity price risk by structuring our customer contracts to pass through changes in commodity prices. As such, we have been able to effectively limit any potential impact from tariffs and commodity price volatility to our margins. Our scale and profitability have also allowed us the flexibility to implement continuous improvement initiatives in driving efficiencies, such as automation and additional capacity, which will result in long-term efficiency and margin improvements, and expanded capabilities.

Our Strategy

During 2022, we announced the implementation of a value-creation framework, MEC Business Excellence (MBX), that is intended to maximize stakeholder value by positioning the Company to achieve above-market performance and capitalizing on multi-year reshoring and outsourcing trends among major OEMs. As part of MBX, we have established clear short- and long-term objectives, with the goal of outlining and adapting priorities and targets to improve operational and financial goals while creating a culture with a keen focus on continuous lean improvements in order to maintain a differentiated and defendable market leading position. The key elements of MBX include:

High-Performance Culture. The Company is focused on effectuating cultural change across the organization by the implementation of performance-based metrics, daily lean management and other process-oriented strategies. Through these efforts, the Company intends to create a high-performance culture enabling teams to drive profitable growth.

Operational Excellence. The Company is focused on leveraging automation and technologies and capabilities to increase productivity and reduce costs across the value chain with the implementation of lean initiatives such as value stream mapping, sales, inventory and operations planning (SIOP) and further optimizing its supply chain and procurement strategies, which will inherently accelerate immediate and long-term productivity and margin improvements.

Commercial Excellence. The Company is focused on driving commercial growth through an integrated, solutions-oriented approach that leverages its full suite of design, prototyping and aftermarket services; an expansion of its fabrication capabilities beyond steel, with an emphasis on lightweight aluminum, plastics and composites; targeted growth in higher value and high-growth adjacent markets including energy transition and clean technology; wallet share expansion among our current customer base; and the implementation of a value-based pricing model capturing the cost to serve. These growth initiatives will continue to deepen and defend our existing market share, while diversifying our customer and end market exposure.

Disciplined Capital Deployment. The Company is focused on driving a disciplined capital strategy that includes allocating capital to expand within high-growth adjacent markets, continue to increase our share-of-wallet with existing customers and execute strategic acquisition opportunities while also generating strong free cash flow, managing debt levels and liquidity positions, and continuing to return capital to shareholders through share repurchases. As part of this initiative, our intentions are to prioritize capital investment towards the light-weighting of materials fabrication, such as aluminum, plastics, and composites, to ensure we are in position to support growth into battery electric vehicles, energy infrastructure and renewables.

Human Resource Optimization. Our employees are the foundation of our company; with experience across a diverse range of markets and capabilities, they drive innovation, believe in our process and the outcomes of their work and our success. The Company is focused on increasing our investment in our workforce and the recruiting and retention of skilled, experienced employees to support the growth of its business. We seek to utilize competitive, performance-based incentives, develop high-potential candidates for internal development and advancement, ensure business continuity through multi-tiered succession planning and ensure a stable recruiting pipeline. As part of this effort, the Company moved its corporate headquarters to Milwaukee, WI in 2024. Additionally, as we continue to invest in our business and increasingly implement a more technology-enabled infrastructure, we strive to redeploy our employees in other, higher-skilled areas of our business and invest in training where needed.

Our Capabilities

We offer a broad portfolio and a one-source solution comprised of advanced and innovative capabilities that enhance quality and simplify supply chains for our customers. Through our collaborative approach, we maintain a complete, and growing, set of sophisticated manufacturing capabilities to meet the diverse needs of our customers, including:

Our Proven Approach

We collaborate with our customers to generate a strategic alignment and position ourselves as an essential part of our customers’ product development and manufacturing processes by drawing on our deep product and engineering knowledge to deliver best-in-class solutions. Our approach is simple: we view quality as a significant business strategy with a strong return on investment. Our philosophy on quality is based on our commitment to precision and continuous improvement with an international automotive task force (IATF) and international organization for standardization (ISO) foundation. Our skilled and experienced staff is highly trained in areas of quality planning, metrology, geometric dimensioning and tolerancing (ASME Y14.5M 1994), ISO, statistical techniques (SPC) and ISO 14001 certifications. Our Quality Management System is comprised of the following:

We periodically enter into joint process improvement efforts with key customers. Such exercises have historically resulted in reduced manufacturing critical path time, cost reductions and quality improvements through effective batch sizes and more repeatable processes. Our commitment to precision and continuous improvement initiatives have resulted in the acquisition and application of state-of-the-art technologies and plant improvements that support lean, quick response manufacturing flexibility that put us at the forefront of our market. Moreover, the agility that our quick response manufacturing methodology provides us keeps our purchasing, manufacturing, engineering and quality teams on the cutting edge of flexible manufacturing. This adaptable approach also decreases manufacturing costs, allows for faster order turnaround times and elimination of excess waste.

We maintain an advanced machinery portfolio in our facilities allowing us to leverage our employee workforce with state-of-the-art capabilities and functionality. We strive to maintain our assets or upgrade capabilities where deterioration has driven obsolescence or better technology is available, reducing our carbon footprint. Most recently, we have invested in multiple fiber laser systems, robotic brake presses and tube bending cells with automation aimed at reducing labor content and optimizing floor space which allows us to generate more revenue with the same workforce and footprint.

Our Markets

Our primary end markets include (but are not limited to) the heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, agriculture and military markets. While our individual end markets may be exposed to cyclical variations, the diversified nature of our end markets affords us the ability to shift production with demand as certain end markets trend lower and others trend higher. In our experience, our diversification has muted the impact of downturns on our business that have affected us in the past. For example, we experienced net sales growth during the 2008 and 2009 recessions due to strong orders, particularly from our customers focused on the military end market. Moreover, as our heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, and agriculture customers’ revenues fluctuated from 2013 to 2017, with median peak-to-trough sales decline of 23%, our peak-to-trough sales declines were less than that of those respective markets at only 10%. We were able to accomplish this by reallocating our resources to serve our heavy- and medium-duty commercial vehicles and powersports customers, leading to strong double-digit growth in those end markets.

Our Customers

We are a critical and deeply embedded supply partner with strong strategic alignment and relationships with our customers. We have developed long-standing business relationships with our OEM customers, many of which span decades. Further, we are diversified by customers and end markets with net sales attributed to our top 20 customers accounting for $503 million of 2023 net sales, and no single end market accounting for more than 38% of net sales. For the year ended December 31, 2023, PACCAR Inc., John Deere and AB Volvo accounted for 15.0%, 14.8% and 10.6% of net sales, respectively. We have not historically experienced customer attrition given high customer switching costs resulting from our embedded relationships driven by our broad capabilities and scale.

Raw Materials and Manufactured Components

Our primary purchased commodities are steel and aluminum. We maintain a broad and diverse base of over 800 direct material suppliers. Our established relationships provide efficient and flexible access to resources and redundancy to ensure support of our customers. We have no history of significant supply issues or outages. In 2023, no single supplier represented more than 16% of our total raw material purchases and over 98% of the raw materials we purchased were sourced from suppliers in the United States. Our suppliers are strategically located to maximize efficiencies and minimize shipping costs. We maintain a multitude of alternative

suppliers to which we could transfer orders to, if needed. As we continue to grow, however, we intend to leverage our size and scale to rationalize our supply base to further reduce material costs. We have structured our customer contracts to pass through commodity price changes, which has allowed us to limit any potential impact of raw material price volatility and tariffs to our margins.

Sales and Marketing

We have a strong sales team comprised of approximately 50 experienced professionals responsible for managing and expanding client relationships and proactively pursuing new opportunities. Sales personnel are aligned by market segment and customer, including heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, agriculture, military and other end markets, and employ a highly technical and collaborative sales process with deep knowledge of our customers and capabilities. Sales personnel have assigned support teams comprised of inside sales, commercial operations, marketing and sales administration personnel. We are consistently involved in the request for proposal processes, where our sales teams with deep process expertise collaborate with customers on optimal designs for manufacturability and manufacturing efficiency. The upfront collaboration drives formalization of product specifications, program lifecycle planning, cost estimates and risk mitigation. The sales process typically takes 3 to 18 months and ultimately ends in the implementation of product lifecycle timelines and purchase orders under long-term customer arrangements. The sales team utilizes systems infrastructure that effectively track and manage backlogs, quotes and bookings information, strategic projects and call reports, all of which are reviewed at weekly sales team meetings.

Information Systems

We utilize standardized information technology systems across all areas of quoting and estimating, enterprise resource planning, materials resource planning, capacity planning and accounting for enhanced procurement of work, project execution and financial controls. We provide information technology oversight and support from our corporate headquarters in Milwaukee, WI. The operational information systems we employ throughout our company are industry specific applications that in some cases have been internally or vendor modified and improved to fit our operations. Our enterprise resource planning software is integrated with our operational information systems wherever possible to deliver relevant, real-time operational data to designated personnel. Accounting and operations personnel of acquired companies are trained not only by our information technology support staff, but by long-tenured employees in our organization with extensive experience using our systems. We believe our information systems provide our people with the tools to execute their individual job function and achieve our strategic initiatives.

Our Competition

We participate in a highly fragmented market with competitors in each of the end markets we serve ranging in size from small companies focused on a single capability or end market, to large multi-disciplinary companies. While there can be instances of intense competition in specific end markets, we believe that we have been able to effectively compete, and maintain competitive advantages on the basis of our:

Our Human Capital Management

As of December 31, 2023, we had approximately 2,500 full-time employees, approximately 1,900 of whom are production employees. None of our employees are represented by a union and we are not party to any collective bargaining agreements. On average, our employees have approximately nine years of service with us.

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Training and development

We maintain an experienced and skilled workforce. We have been focused on attracting and retaining high quality personnel as they represent a critical factor in our continued success. There are many different career paths available to employees, and in order to assist in their career development, we offer multiple in-house training programs, mentorship programs and tuition reimbursement. Our talent development efforts span across all levels of the organization, including an annual performance review process, which includes a development plan assessment allowing employees to discuss and build development plans with their leaders to develop their careers and an executive coaching program that prepares our future leaders for increased responsibilities at MEC. Despite the recent market challenges in hiring trade-skilled employees, our continued investment in newer technologies and capabilities has allowed us to opportunistically re-train and redeploy employees from certain previously human capital-intensive roles into other areas of the Company.

Compensation and benefits

We believe we deliver highly competitive compensation and comprehensive benefit packages, annually benchmarking them against comparable industries in the same geographic vicinity to where our facilities are located. The goals of our compensation programs are to: align pay for performance, support the Company’s goals and attract, retain and motivate high-potential candidates. Additionally, our stock-based compensation plan is a key part of how we stay competitive from a total compensation perspective, as it incentivizes and rewards sustained Company performance. Select employees responsible for driving results are eligible to receive stock-based compensation through our Omnibus Incentive Plan. Refer to Note 18 – Stock-based compensation within the Notes to Consolidated Financial Statements for additional detail related to our stock-based compensation program.

Full-time employees are eligible to receive the following benefits: a Company matched 401(k) Plan, paid time off, health insurance (medical, dental, vision), short-term and long-term disability, life insurance, accidental death and dismemberment insurance, flexible spending accounts, wellness program and life matters employee assistance program. Further enhancing our benefit offerings, we provide an on-site healthcare team at certain facilities to treat work and non-work related injuries and assist employees with general wellness and overall well-being.

Lastly, MEC has several initiatives centered around employee appreciation, which include: cookouts and holiday lunches, Fresh Market food program and quarterly bonuses.

Health and safety

The safety, health and well-being of our employees is one of the Company’s top priorities. Our “Work MEC Safe” program creates a strong safety culture based on five key elements: Inspire, Lead, Analyze, Educate and Recognize. These elements lay the foundation for establishing an employee voice in daily operations, ensuring safety ownership from those in leadership roles, identifying workplace hazards through routine inspections, audits and observations, training employees to identify and mitigate risks and prevent injuries, and developing avenues to continue enhancing the importance of safety in the workplace.

Ethics

Along with our core values, we act in accordance with our Code of Conduct Policy, which creates expectations and provides guidance for all our employees to make the right decisions. Our Code of Conduct Policy covers such topics as conducting Company affairs and fair dealing, conflicts of interest, compliance and disclosures, proper use of Company assets, protecting confidential information and reporting and enforcement of Code of Conduct violations.

Environmental Matters

We are subject to numerous federal, state and local laws and regulations relating to manufacturing, handling and disposal of materials into the environment. We believe that our environmental control procedures are adequate.

Information About Our Executive Officers

The following table sets forth certain information as of February 1, 2024, regarding our executive officers:

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Jagadeesh A. Reddy joined our company as President, Chief Executive Officer and as a member of the Board of Directors in July 2022. Before joining our company, Mr. Reddy was a member of the senior leadership team at W.R. Grace where he was responsible for the Strategy and Growth function as well as Managing Director of Advanced Refining Technologies LLC (ART), Grace’s global joint venture with Chevron. Mr. Reddy previously served as Vice President and General Manager, Water Technologies Strategic Business Unit, and Vice President, Corporate Strategy at Pentair PLC. Prior to Pentair PLC, he held strategy and business leadership roles at ITT Corporation, and its spin-off, Xylem Inc, spent time in M&A roles with United Technologies Corp, product management roles with Danaher Corporation and started his career in manufacturing operations at Denso Corporation. Mr. Reddy earned a Master of Business Administration in Finance and Strategy from the Kellogg School of Management and a Master’s in Engineering Management from the McCormick School of Engineering, both at Northwestern University. He also holds a Master’s in Industrial Engineering from the University of Tennessee, and a Bachelor’s in Mechanical Engineering from a university in India.

Todd M. Butz joined our company in 2008 and has served as our Chief Financial Officer since January 2014. Mr. Butz also serves on the Board of Trustees for Marian University. Prior to joining our company, Mr. Butz spent time in various roles including Manager of Worldwide Financial Reporting at Mercury Marine, a subsidiary of the Brunswick Corporation, and Audit Supervisor at Schenck Business Solutions, now Clifton Larsen Allen. Mr. Butz earned a Bachelor of Science in Accounting and Business Management from Marian University and is currently a licensed certified public accountant.

Ryan F. Raber joined our company in 2009 and has served as our Executive Vice President – Strategy, Sales & Marketing since June 2019. Prior to serving in his current position, Mr. Raber served as our Executive Vice President – Sales & Marketing beginning in November 2018 and as our Vice President of Sales & Marketing beginning in August 2013. Mr. Raber earned a Masters of Business Administration from the University of Wisconsin-Madison and a Bachelor of Science in Mechanical Engineering from Purdue University.

Sean P. Leuba joined our company in January 2023 as Senior Vice President – Corporate Development and General Counsel. Before joining our company, Mr. Leuba was the Head of Corporate Development for Caterpillar Inc. Previously, Mr. Leuba served in multiple progressively senior roles, including as General Manager, Caterpillar Electric Power Division and General Manager, Caterpillar Remanufactured Products Division. Prior to joining Caterpillar, Mr. Leuba practiced law with Arnold & Porter in its Washington, D.C. office focusing on corporate, securities, mergers & acquisitions and venture capital. Mr. Leuba earned a Master of Business Administration in Finance from the University of Chicago, a Juris Doctor from the Washington and Lee University School of Law, and a Bachelor of Arts from the University of Maryland Baltimore County.

Rachele M. Lehr joined our company in March 2023 as Chief Human Resources Officer. Prior to joining our company, Ms. Lehr was the Senior Vice President of Human Resources and Administration at Briggs & Stratton. Previously, Ms. Lehr served in multiple other senior roles at Briggs & Stratton including Director of Hurman Resources and International Controller. Prior to joining Briggs & Stratton, Ms. Lehr served as Sales Controller for Bar-S Foods (A Sigma Company). Ms. Lehr earned a Bachelor of Science in Business Administration with a Major in Accounting from Marquette University.

Available Information

Our website address is www.mecinc.com. We are not including the information provided on our website as a part of, or incorporating it by reference into, this Annual Report on Form 10-K. We make available free of charge (other than an investor’s own internet access charges) through our website our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, amendments to these reports and our proxy statements, as soon as reasonably practicable after we electronically file such material with, or furnish such material to, the United States Securities and Exchange Commission (the SEC).

Item 1A. Risk Factors.

Investing in our common stock involves risk. You should carefully consider the risks and uncertainties described below, together with all of the other information in this Annual Report on Form 10-K, including “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and related notes, before making a decision to invest in our common stock. The risks and uncertainties described below may not be the only ones we face. If any of the risks actually occur, our business, financial condition, operating results and prospects could be materially and adversely affected. In that event, the market price of our common stock could decline, and you could lose part or all of your investment.

Risks Related to Our Business

Macroeconomic conditions could have a material adverse impact on our business, financial condition, cash flows and results of operations.

Macroeconomic conditions, including inflation, elevated interest rates and recessionary concerns, as well as continuing supply chain constraints affecting some of our customers, labor availability and material cost pressures, have had, and may continue to have, a negative impact on our business, financial condition, cash flows and results of operations. For instance, we were negatively impacted in 2023 by supply chain constraints impacting certain of our OEMs customers. In addition, in 2023, continued inflationary pressures on wages, benefits, materials, and manufacturing supplies negatively impacted our results of operations and cash flows.

We expect certain supply chain constraints, material cost inflation and inflationary pressures on wages and benefits to continue in 2024 and we may not be able to fully mitigate the impact of the inflationary cost pressures through price increases. Continuing or worsening inflation, recessionary concerns and/or supply chain and labor challenges may have a material adverse impact on our business, financial condition, cash flows and/or results of operations.

Although we do not have any operations outside the United States, geopolitical events, including the ongoing conflict between Russia and Ukraine and the conflict in the Middle East, has caused greater uncertainty in the global economy and has led to significant volatility in raw material costs, component costs, commodity prices and energy costs, exacerbating the inflation situation.

We are affected by developments in the industries in which our customers operate.

We derive our net sales from customers in the following industry sectors: heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, agriculture, military and other end markets. Factors affecting any of these industries in general, or any of our customers in particular, could adversely affect us because our net sales growth largely depends on the continued growth of our customers’ businesses in their respective industries. These factors include:

We expect that future sales will continue to depend on the success of our customers. If economic conditions and demand for our customers’ products deteriorate, we may experience a material adverse effect on our business, operating results and financial condition.

Most of our customers do not commit to long-term production schedules, which makes it difficult for us to schedule production accurately and achieve maximum efficiency of our manufacturing capacity.

Most of our customers do not commit to long-term contracts or firm production schedules, and we continue to experience reduced lead-times in customer orders. Additionally, customers may change production quantities or delay production with little lead-time or advance notice. Therefore, we rely on and plan our production and inventory levels based on our customers’ advance orders, commitments and/or forecasts as well as our internal assessments and forecasts of customer demand. The volume and timing of sales to our customers may vary due to, among others:

The variations in volume and timing of sales make it difficult to schedule production and optimize utilization of manufacturing capacity. This uncertainty may require us to increase staffing and incur other expenses in order to meet an unexpected increase in customer demand, potentially placing a significant burden on our resources. Additionally, an inability to respond to such increases in a timely manner may cause customer dissatisfaction, which may negatively affect our customer relationships.

Further, in order to secure sufficient production scale, we may make capital investments in advance of anticipated customer demand (including, in some instances, new customer demand). Such investments may lead to low utilization levels if demand forecasts change and we are unable to utilize the additional capacity. Because fixed costs make up a large proportion of our total production costs, a reduction in customer demand can have a significant adverse impact on our gross profits and operating results. Additionally, we order materials and components based on customer forecasts and orders and suppliers may require us to purchase materials and components in minimum quantities that exceed customer requirements, which may have an adverse impact on our gross profits and operating results. In the past, anticipated orders from some of our customers and anticipated new customers have failed to materialize and/or delivery schedules have been deferred as a result of changes in our customers’ business needs.

We may be unable to realize net sales represented by our awarded business, which could materially and adversely impact our business, financial condition, results of operations and cash flows.

The realization of future net sales from awarded business is inherently subject to a number of important risks and uncertainties, including a lack of long-term commitments and production schedules with customers and anticipated new customers. Accordingly, we cannot assure you that we will realize any or all of the future net sales represented by our awarded business. Any failure to realize these net sales could have a material adverse effect on our business, financial condition, results of operations and cash flows.

In addition to not having a commitment from our customers and anticipated new customers regarding the minimum number of components they must purchase from us if we obtain awarded business, typically the terms and conditions of the agreements with our customers provide that they have the contractual right to unilaterally terminate our contracts with them with no notice or limited notice. In many cases, we must commit substantial resources in preparation for production under awarded customer business well in advance of the customer’s production start date. If such contracts are terminated by our customers, our ability to obtain compensation from our customers for such termination is generally limited to the direct out-of-pocket costs that we incurred for raw materials and work-in-progress. Although we have been successful in recovering these costs under appropriate circumstances in the past, we cannot assure you that our results of operations will not be materially adversely impacted in the future if we are unable to recover these types of pre-production costs related to our customers’ cancellation of awarded business.

Failure to compete successfully in our markets could materially adversely affect our business, financial condition, results of operations or prospects.

We offer our processes and solutions in highly competitive markets. The competitors in these markets may, among other things:

Competitors with lower cost structures may have a competitive advantage over us. We also expect our competitors to continue to improve the performance of their current processes and solutions, to reduce the prices of their existing processes and solutions and to introduce new processes or solutions that may offer greater performance and improved pricing. Additionally, we may face competition from new entrants to the industry in which we operate. Any of these developments could cause a decline in sales and average selling prices, loss of market share or profit margin compression. Maintaining and improving our competitive position will require successful management of these factors, including continued investment by us in research and development, engineering, marketing and customer service and support. Our future growth rate depends upon our agility to compete successfully, which is impacted by a number of factors, including, but not limited to, our ability to (i) identify emerging technological trends in our target end markets, (ii) develop and maintain a wide range of competitive and appropriately priced processes and solutions and defend our market share against an ever-expanding number of competitors including many new and non-traditional competitors, (iii) ensure that our processes and solutions remain cost-competitive and (iv) attract, develop and retain individuals with the requisite technical expertise and understanding of customers’ needs to develop and sell new technologies and processes.

We may not be able to maintain our manufacturing, engineering and technological expertise.

The markets for our processes and solutions are characterized by changing technology and evolving process development. The continued success of our business will depend upon our ability to:

We cannot be certain that we will develop the capabilities required by our customers in the future. The emergence of new technologies, industry standards or customer requirements may render our equipment, inventory or processes obsolete or uncompetitive. We may have to acquire new technologies and equipment to remain competitive. The acquisition and implementation of new technologies and equipment may require us to incur significant expense and capital investment, which could reduce our margins and affect our operating results. When we establish or acquire new facilities, we may not be able to maintain or develop our manufacturing, engineering and technological expertise due to a lack of trained personnel, effective training of new staff or technical difficulties with machinery. Failure to anticipate and adapt to customers’ changing technological needs and requirements or to hire and retain a sufficient number of engineers and maintain manufacturing, engineering and technological expertise may have a material adverse effect on our business, operating results and financial condition.

We are dependent on a limited number of large customers for current and future net sales. The loss of any of these customers or the loss of market share by these customers could materially adversely affect our business, financial condition, results of operations and cash flows.

We depend on a limited number of major manufacturers for a majority of our net sales. For example, our largest customers in 2023 included PACCAR Inc., John Deere and AB Volvo which accounted for 15.0%, 14.8% and 10.6% of our net sales, respectively. Our financial performance depends in large part on our ability to continue to arrange for the purchase of our processes and solutions with these customers, and we expect these customers to continue to make up a large portion of our net sales in the foreseeable future. The loss of all or a substantial portion of our sales to any of our large-volume customers could have a material adverse effect on our business, financial condition, results of operations and cash flows by reducing cash flows and by limiting our ability to spread our fixed costs over a larger net sales base. We may make fewer sales to these customers for a variety of reasons, including, but not limited to:

Entering new markets, either organically or via acquisition, poses new competitive threats and commercial risks.

As we expand into new markets, either organically or via acquisition, we expect to diversify our net sales by leveraging our development, engineering and manufacturing capabilities in order to source necessary parts and components for other industries. Such diversification requires investments and resources that may not be available as needed. Furthermore, even if we sign contracts in new markets, we cannot guarantee that we will be successful in leveraging our capabilities into these new markets and thus in meeting the needs of these new customers and competing favorably in these new markets. If these new customers experience reduced demand for their products or financial difficulties, our future prospects will be negatively affected as well.

We depend on our key executive officers, managers, and trade-skilled personnel and may have difficulty retaining and recruiting qualified employees. Moreover, we operate in competitive labor markets, which may also impact our ability to hire and retain employees at our facilities.

Our success depends to a large extent upon the continued services of our executive officers, senior management, managers and trade-skilled personnel and our ability to recruit and retain skilled personnel to maintain and expand our operations. We could be affected by the loss of any of our executive officers who are responsible for formulating and implementing our business plan and strategy, and who have been instrumental in our growth and development. In addition, we need to recruit and retain additional management personnel and other skilled employees at our facilities. However, competition for our trade-skilled labor is high, particularly in some of the geographic locations where our facilities are located. Although we intend to continue to devote significant resources to recruit, train and retain qualified employees, we may not be able to attract, effectively train and retain these employees. Any failure to do so could impair our ability to conduct design, engineering and manufacturing activities, efficiently perform our contractual obligations, develop marketable components, timely meet our customers’ needs and ultimately win new business, all of which could adversely affect our business, financial condition and results of operations. If we are not able to do so, our business and our ability to continue to grow could be negatively affected. In addition, salaries and related costs are a significant portion of the cost of providing our solutions and, accordingly, our ability to efficiently utilize our workforce impacts our profitability.

Availability of, and volatility in the prices of, raw materials and energy prices and our ability to pass along increased costs to our customers could adversely affect our results of operations.

The prices and availability of raw materials critical to our business and performance are based on global supply and demand conditions. Certain raw materials used by us are only available from a limited number of suppliers, and it may be difficult to find alternative suppliers at the same or similar costs. While we strive to pass through the price of raw materials to our customers, we may not be able to do so in the future, and volatility in the prices of raw materials (including as a result of macroeconomic conditions and geopolitical events) may affect customer demand for certain components. In addition, we, along with our suppliers and customers, rely on various energy sources for a number of activities connected with our business, such as the transportation of raw materials and finished parts. The availability and pricing of these resources are subject to market forces that are beyond our control. Furthermore, we are vulnerable to any reliability issues experienced by our suppliers, which also are beyond our control. Our suppliers contract separately for the purchase of such resources, and our sources of supply could be interrupted should our suppliers not be able to obtain these materials due to higher demand or other factors that interrupt their availability (including as a result of macroeconomic conditions and geopolitical events). Energy and utility prices, including electricity and water prices, and in particular prices for petroleum-based energy sources, are volatile. Increased supplier and customer operating costs arising from volatility in the prices of energy sources, such as increased energy and utility costs and transportation costs, could be passed through to us and we may not be able to increase our product prices sufficiently or at all to offset such increased costs. The impact of any volatility in the prices of energy or the raw materials on which we rely, including the reduction in demand for certain components caused by such price volatility, could result in a loss of net sales and profitability and adversely affect our results of operations.

Our manufacturing operations are dependent upon third-party suppliers, making us vulnerable to supply shortages.

We obtain raw materials, parts and certain components from third-party suppliers. Any delay in receiving supplies could impair our ability to timely deliver components to our customers and, accordingly, could have an adverse effect on our business, financial condition, results of operations and cash flows. The volatility in the financial markets and uncertainty in the sectors our suppliers service could result in exposure related to the financial viability of certain of our suppliers. Suppliers may also exit certain business lines, causing us to find other suppliers for materials or components and potentially delaying our ability to deliver components to customers, or our suppliers may change the terms on which they are willing to provide parts or materials to us, any of which could adversely affect our financial condition and results of operations. In addition, many of our suppliers have unionized workforces that could be subject to work stoppages as a result of labor relations issues. Some of our suppliers supply components and materials that cannot be quickly or inexpensively re-sourced to another supplier due to long lead times and contractual commitments that might be required by another supplier in order to provide the components or materials.

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Increases in the cost of employee benefits could impact our financial results and cash flows.

Our expenses relating to employee health benefits are significant. Unfavorable changes in the cost of and the unpredictability of claims under such benefits, including the current inflationary pressures on wages and benefits, could impact our financial results and cash flows. Healthcare costs have risen significantly in recent years, and recent legislative and private sector initiatives regarding healthcare reform could result in significant changes to the U.S. healthcare system. Due to the breadth and complexity of the healthcare reform legislation and the uncertainty surrounding further reform proposals, we are not able to fully determine the impact that healthcare reform will have in the future on company sponsored medical plans.

Our growth strategy includes acquisitions, and we may not be able to identify attractive acquisition targets or successfully integrate acquired targets without impacting our business.

Acquisitions have played a key role in our growth strategy, and we expect to continue to grow through acquisitions in the future. We expect to continue evaluating potential strategic acquisitions of businesses, assets and product lines. We may not be able to identify suitable candidates, negotiate appropriate or favorable acquisition terms, obtain financing that may be needed to consummate such transactions or complete proposed acquisitions. There is significant competition for acquisition and expansion opportunities in our businesses, which may increase the cost of any acquisition or result in the loss of attractive acquisition targets.

In addition, acquisitions involve numerous risks, including (i) incurring the time and expense associated with identifying and evaluating potential acquisitions and negotiating potential transactions, resulting in management’s attention being diverted from the operation of our existing business; (ii) using estimates and judgments to evaluate credit, operations, funding, liquidity, business, management and market risks with respect to the target entity or assets; (iii) litigation relating to an acquisition, particularly in the context of a publicly held acquisition target, could require us to incur significant expenses or result in the delaying or enjoining of the transaction; (iv) failing to properly identify an acquisition candidate’s liabilities, potential liabilities or risks; and (v) not receiving required regulatory approvals or such approvals being delayed or restrictively conditional. In addition, any acquisitions could involve the incurrence of substantial additional indebtedness or dilution to our shareholders. We cannot assure you that we will be able to successfully integrate any acquisitions that we undertake or that such acquisitions will perform as planned or prove to be beneficial to our operations and cash flow. Any such failure could seriously harm our financial condition, results of operations and cash flows.

We routinely evaluate potential acquisition candidates and engage in discussions and negotiations regarding potential acquisitions; however, even if we execute a definitive agreement for an acquisition, there can be no assurance that we will consummate the transaction within the anticipated closing timeframe, or at all. Further, acquisitions typically involve the payment of a premium over book- and market-value for the target business or asset and, therefore, some dilution of our tangible book value and/or earnings per common share may occur in connection with any future transaction.

If we fail to develop new and innovative processes or if customers in our market do not accept them, our results would be negatively affected.

Our processes must be kept current to meet our customers’ needs. To remain competitive, we therefore must develop new and innovative processes on an ongoing basis. If we fail to make innovations or the market does not accept our new processes, our sales and results would suffer. We invest significantly in the research and development of new processes; however, these expenditures do not always result in processes that will be accepted by the market. To the extent they do not, whether as a function of the process or the business cycle, we will have increased expenses without significant sales to offset such costs. Failure to develop successful new processes may also cause potential customers to purchase from competitors.

We are dependent on information technology and our systems and infrastructure face certain risks, including cybersecurity risks and data leakage risks.

We are dependent on information technology systems and infrastructure that could be damaged or interrupted by a variety of factors. Any significant breach, breakdown, destruction or interruption of these systems by employees, others with authorized access to our systems or unauthorized persons has the potential to negatively affect our operations. There is also a risk that we could experience a business interruption, theft of information or reputational damage as a result of a cyberattack, such as the infiltration of a data center, denial-of-service attacks, viruses, malicious software, phishing attacks, security breaches or data leakage of confidential information either internally or at our third-party providers. Although we have invested in the protection of our data and information

technology to reduce these risks and periodically test the security of our information systems network, there can be no assurance that our efforts will prevent breakdowns or breaches in our systems that could have a material adverse effect on our financial condition, results of operations and liquidity.

We may incur additional expenses and delays due to technical problems or other interruptions at our manufacturing facilities.

Disruptions in operations due to technical problems or power interruptions as well as other interruptions such as floods, fire, other natural disasters, epidemics or pandemics could adversely affect the manufacturing capacity of our facilities. Such interruptions could cause delays in production and cause us to incur additional expenses such as charges for expedited deliveries for components that are delayed. In addition, our customers have the ability to cancel purchase orders in the event of any delays in production and may decrease future orders if delays are persistent. Additionally, to the extent that such disruptions do not result from damage to our physical property, these may not be covered by our business interruption insurance. Any such disruptions may adversely affect our operations and financial results.

Geopolitical and economic developments could adversely affect our business.

Geopolitical events, increased political instability and social unrest, evidenced by the threat or occurrence of terrorist attacks or conflicts, enhanced national security measures, the risks related to epidemics and the related decline in consumer confidence may hinder our ability to do business. Any escalation in these events or similar future events may disrupt our operations or those of our customers and suppliers and could affect the availability of raw materials and components we need in our manufacturing operations or the means to transport those materials or components to our manufacturing facilities and finished parts to our customers. These events have had and may continue to have an adverse effect, generally, on the economy and consumer confidence and spending, which could adversely affect our net sales and operating results. The effect of these events on the volatility of the financial markets could in the future lead to volatility of the market price of our securities and may limit the capital resources available to us, our customers and our suppliers.

The impact of foreign trade relations and associated tariffs, as well as our reliance on international suppliers for certain raw materials, could adversely impact our business.

We currently source certain raw materials from international suppliers. Import tariffs, taxes, customs duties and/or other trade regulations imposed by the U.S. government on foreign countries, or by foreign countries on the United States, could significantly increase the prices we pay for certain raw materials, such as steel, aluminum and purchased components, that are critical to our ability to manufacture components for our customers. The international sourcing for these materials may also be hurt by health concerns regarding infectious diseases in countries in which these materials are purchased from, adverse weather, natural disasters or geopolitical events. In addition, we may be unable to find a domestic supplier to provide the necessary raw materials on an economical basis in the amounts we require. If the cost of our raw materials increases, or if we are unable to procure the necessary raw materials required to manufacture our components, then we could experience a negative impact on our operating results, profitability, customer relationships and future cash flows.

Additionally, our customers’ businesses may be negatively impacted by import tariffs, taxes, customs duties and/or other trade regulations imposed by the U.S. government on foreign countries or by foreign countries on the United States, which could, in turn, reduce our customers’ demand for the components that we manufacture for them. Any reduction in customer demand for our components as a result of such tariffs, taxes, customs duties and/or other trade regulations, or as a result of the impact of infectious diseases, could have a material adverse impact on our financial position, results of operations, cash flows and liquidity.

The risks associated with climate change, as well as climate change legislation and regulations, could adversely affect our operations and financial condition.

The physical risks of climate change, such as more frequent or more extreme weather events, changes in temperature and precipitation patterns, changes to ground and surface water availability and other related phenomena, could affect some, or all, of our operations, as well as the operations of our customers and suppliers. Severe weather or other natural disasters could be destructive, which could result in increased costs, including supply chain costs.

In addition, a number of government bodies have finalized, proposed or are contemplating legislative and regulatory changes in response to growing concerns about climate change. In recent years, federal, state and local governments have taken steps to reduce emissions of greenhouse gases (GHGs). The Environmental Protection Agency has finalized a series of GHG monitoring, reporting and emissions control rules for certain large sources of GHGs, and the U.S. Congress has, from time to time, considered adopting legislation to reduce GHG emissions. Numerous states have already taken measures to reduce GHG emissions, primarily through the development of GHG emission inventories and/or regional GHG cap-and-trade programs.

Although it is not possible at this time to predict how future legislation or regulations to address GHG emissions would impact our business, any such laws and regulations imposing reporting obligations on, or limiting emissions of GHGs from, our equipment and operations, could require us to incur costs to reduce GHG emissions associated with our operations. We cannot assure you that our costs, liabilities and obligations relating to environmental matters will not have a material adverse effect on our business, financial condition, results of operations and cash flows.

Our manufacturing, painting and coating operations are subject to environmental, health and safety laws and regulations that could result in liabilities to us.

Our manufacturing, painting and coating operations are subject to environmental, health and safety laws and regulations, including those governing discharges to air and water, the management and disposal of hazardous substances, the cleanup of contaminated sites and health and safety matters. We could incur material costs, including cleanup costs, civil and criminal fines, penalties and third-party claims for cost recovery, property damage or personal injury as a result of violations of or liabilities under such laws and regulations. The ultimate cost of remediating contaminated sites, if any, is difficult to accurately predict and could exceed estimates. In addition, as environmental, health and safety laws and regulations have tended to become stricter, we could incur additional costs complying with requirements that are promulgated in the future.

If our manufacturing processes do not comply with applicable statutory and regulatory requirements, or if we manufacture components containing manufacturing defects, demand for our capabilities may decline and we may be subject to liability claims.

Our manufacturing processes and facilities need to comply with applicable statutory and regulatory requirements. We may also have the responsibility to ensure that the processes we use satisfy safety and regulatory standards, including those applicable to our customers and to obtain any necessary certifications. In addition, our customers’ products, as well as the manufacturing processes and components that we use to produce such products, are often highly complex. As a result, components that we manufacture may at times contain manufacturing defects, and our manufacturing processes may be subject to errors or not be in compliance with applicable statutory and regulatory requirements or demands of our customers. Defects in the components we manufacture, whether caused by a manufacturing or component failure or error, or deficiencies in our manufacturing processes, may result in delayed shipments to customers, replacement costs or reduced or cancelled customer orders. If these defects or deficiencies are significant, our business reputation may also be damaged. The failure of the components that we manufacture for our customers to comply with applicable statutory and regulatory requirements may subject us to legal fines or penalties and, in some cases, require us to shut down or incur considerable expense to correct a manufacturing process or facility. In addition, these defects may expose us to liability to pay for the recall of a customer’s product or to indemnify our customers for the costs of any such claims or recalls which they face as a result of using items manufactured by us in their products.

Adverse judgments or settlements in legal disputes, including product liability, intellectual property infringement and other claims, could result in materially adverse monetary damages or injunctive relief and damage our business and/or our reputation.

We are subject to, and may become a party to, a variety of litigation or other claims and suits that arise from time to time in the ordinary course of our business. The results of litigation and other legal proceedings are inherently uncertain and adverse judgments or settlements in some or all of these legal disputes may result in materially adverse monetary damages or injunctive relief against us, or in other adverse consequences to our financial condition and results of operations. Additionally, our insurance policies may not protect us against potential liability due to various exclusions in the policies and self-insured retention amounts. Partially or completely uninsured claims, if successful and of significant magnitude, could have a material adverse effect on our business, financial condition and results of operations. Furthermore, any claims or litigation, even if fully indemnified or insured, could damage our reputation and make it more difficult to compete effectively or obtain adequate insurance in the future.

The components we manufacture can expose us to potential liabilities. For instance, our manufacturing operations expose us to potential product liability claims resulting from injuries caused by defects in components we design or manufacture, as well as potential claims that components we design infringe on third-party intellectual property rights. Such claims could subject us to significant liability for damages, subject the infringing portion of our business to injunction and, regardless of their merits, could be time-consuming and expensive to resolve. We may also have greater potential exposure from warranty claims and recalls due to problems caused by component or product design. Although we have product liability insurance coverage, it may not be sufficient to cover the full extent of our product liability, if at all. A successful product liability claim in excess or outside of our insurance coverage or any material claim for which insurance coverage was denied or limited and for which indemnification was not available could have a material adverse effect on our business, results of operations and/or financial condition.

Any failure to protect our customers’ intellectual property that we use in the products we manufacture for them could harm our customer relationships and subject us to liability.

The products we manufacture for our customers often contain our customers’ intellectual property, including copyrights, patents, trade secrets and know-how. Our success depends, in part, on our ability to protect our customers’ intellectual property. The steps we take to protect our customers’ intellectual property may not adequately prevent its disclosure or misappropriation. If we fail to protect our customers’ intellectual property, our customer relationships could be harmed, and we may experience difficulty in establishing new customer relationships. In addition, our customers might pursue legal claims against us for any failure to protect their intellectual property, possibly resulting in harm to our reputation and our business, financial condition and operating results.

Compliance or the failure to comply with regulations and governmental policies could cause us to incur significant expense.

We are subject to a variety of local and foreign laws and regulations including those relating to labor and health and safety concerns. Such laws may require us to pay mandated compensation and penalties. Additionally, we may need to obtain and maintain licenses and permits to conduct business in various jurisdictions. If we or the businesses or companies we acquire have failed or fail in the future to comply with such laws and regulations, then we could incur liabilities and fines and our operations could be suspended. Such laws and regulations could also restrict our ability to modify or expand our facilities, could require us to acquire costly equipment, or could impose other significant expenditures.

Because our industry is capital intensive and we have significant fixed and semi-fixed costs, our profitability is sensitive to changes in volume.

The property, plants and equipment needed to produce components for our customers and provide our processes and solutions can be very expensive. We must spend a substantial amount of capital to purchase and maintain such property, plants and equipment. Although we believe our current cash balance, along with our projected internal cash flows and available financing sources, will provide sufficient cash to support our currently anticipated operating and capital needs, if we are unable to generate sufficient cash to purchase and maintain the property, plants and equipment necessary to operate our business, we may be required to reduce or delay planned capital expenditures or to incur additional indebtedness.

Prior to our initial public offering, we were treated as an S Corporation, and claims of taxing authorities related to our prior status as an S Corporation could have an adverse effect on our business, financial condition and results of operations.

Upon the consummation of our initial public offering, our status as an S Corporation was terminated and we have since been treated as a “C Corporation” for U.S. federal income tax purposes and thus are now subject to U.S. federal income tax. If the unaudited, open tax years in which we were an S Corporation are audited by the Internal Revenue Service (IRS), and we determined not to have qualified for, or to have violated any requirement for maintaining our S Corporation status, we will be obligated to pay back taxes, interest and possibly penalties. The amounts that we would be obligated to pay could include taxes on all our taxable income attributable to such open tax years. Any such claims could result in additional costs to us and could have a material adverse effect on our business, financial condition and results of operations.

Prior to the completion of our initial public offering we were 100% owned by the Mayville Engineering Company, Inc. Employee Stock Ownership Plan (ESOP), which is a retirement plan intended to be tax-qualified. If the ESOP fails to meet the requirements of a tax-qualified retirement plan, we could be subject to substantial penalties.

The ESOP, is a defined contribution retirement plan subject to the requirements of the Internal Revenue Code of 1986, as amended (the Code), and the Employee Retirement Income Security Act of 1974, as amended (ERISA). The ESOP has received a determination letter from the IRS that it meets the requirements of a tax-qualified retirement plan in form and we endeavor to maintain and administer the ESOP in compliance with all requirements of the Code and ERISA. However, the rules regarding tax-qualified plans, and especially ESOPs, are complex and change frequently. Accordingly, it is possible that the ESOP may not have been and may not in the future be administered in full compliance with all applicable rules under the Code or ERISA.

If the IRS were to determine that the ESOP was not in material compliance with the Code or ERISA, then the ESOP could lose its tax-qualified status and we could be subject to substantial penalties under the Code and/or ERISA, which could have a material adverse effect on our business, financial condition or results of operations. Additionally, any retroactive loss of the ESOP’s tax-qualified status would adversely impact our prior treatment as an S Corporation. See “Prior to our initial public offering, we were treated as an S Corporation, and claims of taxing authorities related to our prior status as an S Corporation could have an adverse effect on our business, financial condition and results of operations.”

Risks Related to Our Indebtedness

Our Amended and Restated Credit Agreement restricts our ability and the ability of our subsidiaries to engage in some business and financial transactions.

On June 28, 2023, we entered into an amended and restated credit agreement (the Credit Agreement) with certain lenders and Wells Fargo Bank, National Association, the Agent. The Credit Agreement provides for a $250,000,000 revolving credit facility, with a letter of credit sub-facility, and a swingline facility in an aggregate amount of $25,000,000. The Credit Agreement also provides for the availability of incremental facilities to the greater of $100,000,000 and 125% of the Company’s twelve month trailing Consolidated EBITDA through an accordion feature. All amounts borrowed under the credit agreement mature on June 28, 2028.

Our Credit Agreement contains a number of covenants that limit our ability and the ability of our subsidiaries to:

Our Credit Agreement also requires us to maintain a minimum interest coverage ratio and a consolidated total leverage ratio, and contains certain customary representations and warranties, affirmative covenants and events of default (including, among others, payment default, covenant default, breach of representation or warranty, bankruptcy, cross-default, material ERISA events, material money judgements and failure to maintain subsidiary guarantees). If an event of default occurs under the Credit Agreement, the lenders under the Credit Agreement will be entitled to take various actions, including the acceleration of amounts due thereunder, the termination of such credit facility and all actions permitted to be taken by a secured creditor. Our failure to comply with our obligations under the Credit Agreement may result in an event of default under the Credit Agreement. A default, if not cured or waived, may permit acceleration of our indebtedness. If our indebtedness is accelerated, we cannot be certain that we will have sufficient funds available to pay the accelerated indebtedness or that we will have the ability to refinance the accelerated indebtedness on terms favorable to us or at all.

We are able to incur additional debt, which could reduce our ability to satisfy our current obligations under our existing indebtedness.

At December 31, 2023, we had $147.5 million outstanding under our revolving credit facility. In addition, we may be able to incur significant additional indebtedness in the future, and we may do so, among other reasons, to fund acquisitions as part of our growth strategy. Although the Credit Agreement contains restrictions on the incurrence of additional indebtedness, these restrictions are subject to a number of qualifications and exceptions, and we could incur substantial additional indebtedness in compliance with these restrictions.

Risks Related to Ownership of Our Common Stock

Your ability to influence corporate matters may be limited because the ESOP and our 401(k) plan own a substantial amount of our stock and continue to have significant influence over us, which may limit your ability to influence the outcome of important transactions, including a change in control.

As of December 31, 2023, our employees and certain former employees, through their interests in the ESOP and the Mayville Engineering Company, Inc. 401(k) Plan (the 401(k) Plan), beneficially owned approximately 36% of the outstanding shares of our common stock. Each participant in the ESOP and the 401(k) Plan is entitled to direct the vote of the shares allocated to his or her accounts, in his or her sole discretion. As a result, our employees and former employees, if acting together, will be able to influence or control matters requiring approval by our shareholders, including the election of directors, influence over our management and policies and the approval of mergers, acquisitions or other extraordinary transactions. As employees and former employees, the ESOP and 401(k) Plan participants’ interests may be contrary to other investors. This concentration of ownership may have the effect of delaying, preventing or deterring a change in control of our company, could deprive our non-ESOP and non-401(k) Plan shareholders of an opportunity to receive a premium for their common stock as part of a sale of our company and might ultimately affect the market price of our common stock.

The Trustees of the ESOP and the 401(k) Plan may have the power to vote a large block of shares on matters presented to shareholders for approval.

ESOP and 401(k) Plan participants have the right to direct the vote of the shares allocated to his or her ESOP and 401(k) Plan accounts. However, if a participant does not timely direct the voting of his or her shares, then (1) GreatBanc Trust Company (the ESOP Trustee) will vote such shares in its independent fiduciary discretion and (2) Principal Trust Company (the 401(k) Plan Trustee) will vote such shares as directed by the 401(k) Plan sponsor, which is the Company. Additionally, the ESOP Trustee and the

401(k) Plan Trustee have fiduciary duties under ERISA which may cause the ESOP Trustee or the 401(k) Plan Trustee to override participants’ voting discretions. Consequently, there may be circumstances in which the ESOP Trustee and the 401(k) Plan Trustee have the ability to vote a significant block of shares on matters presented to shareholders for approval. The ESOP and the 401(k) Plan, which as retirement plans have the purpose of providing retirement benefits to current and former employees of the Company and their beneficiaries, may have interests that are different from other investors and may vote in a way with which other shareholders disagree and which may be adverse to other shareholders interests.

The market price of our common stock may be volatile, and you could lose all or part of your investment.

Since our initial public offering in May 2019, the market price of our common stock has been volatile and has been and could continue to be subject to wide fluctuations in response to various factors, some of which are beyond our control. These fluctuations could cause investors to lose all or part of their investment in our common stock. Factors that could cause fluctuations in the market price of our common stock include the following: sales of substantial amounts of our securities by our directors, executive officers or significant shareholders (including our current and former employees via the ESOP and the 401(k) Plan) or the perception that such sales could occur; general economic and geopolitical conditions, inflation, interest rates, tariffs, fuel prices, international currency fluctuations, recessionary concerns and acts of war or terrorism; price and volume fluctuations in the overall stock market from time to time; relatively small percentage of our common stock available publicly; actual or anticipated fluctuations in our quarterly financial results or the quarterly financial results of companies perceived to be similar to us; changes in the market’s expectations about our operating results; changes in our orders in a given period; success of competitors; our operating results failing to meet the expectation of securities analysts or investors in a particular period; changes in financial estimates and recommendations by securities analysts concerning us or the markets in general; operating and stock price performance of other companies that investors deem comparable to us; our ability to manufacture new and enhanced components for the products of our customers on a timely basis; changes in laws and regulations affecting our business; commencement of, or involvement in, litigation involving us; changes in our capital structure, such as future issuances of securities or the incurrence of additional debt; the volume of securities available for public sale; any major change in our Board of Directors or management; and changes in our investor base.

In the past, following periods of volatility in the overall market and the market price of a particular company’s securities, securities class action litigation has often been instituted against these companies. This litigation, if instituted against us, could result in substantial costs and a diversion of our management’s attention and resources.

We do not expect to declare any dividends in the foreseeable future.

The continued operation and growth of our business, including acquisitions and capital expenditures, will require substantial cash. Accordingly, we do not anticipate declaring any cash dividends to holders of our common stock in the foreseeable future. Any determination to pay dividends in the future will be at the discretion of our Board of Directors and will depend upon results of operations, financial condition, any contractual restrictions, our indebtedness, restrictions imposed by applicable law and other factors our Board of Directors deem relevant. Consequently, investors may need to sell all or part of their holdings of our common stock after price appreciation, which may never occur, as the only way to realize any future gains on their investment.

Some provisions of Wisconsin law and our articles of incorporation and bylaws could make a merger, tender offer or proxy contest difficult, thereby depressing the trading price of our common stock.

Our status as a Wisconsin corporation and the anti-takeover provisions of the Wisconsin Business Corporation Law (the WBCL) may discourage, delay or prevent a change in control even if a change in control would be beneficial to our shareholders by prohibiting us from engaging in a business combination with an interested shareholder for a period of three years after the person becomes an interested shareholder. We may engage in a business combination with an interested shareholder after the expiration of the three-year period with respect to that shareholder only if one or more of the following conditions is satisfied: (i) our Board of Directors approved the acquisition of the stock before the date on which the shareholder acquired the shares, (ii) the business combination is approved by a majority of our outstanding voting stock not beneficially owned by the interested shareholder or (iii) the consideration to be received by shareholders meets certain fair prices requirements of the WBCL with respect to form and amount.

In addition, our articles of incorporation and bylaws contain provisions that may make the acquisition of the company more difficult, including the following:

These provisions could have the effect of discouraging, delaying or preventing a transaction involving a change in control of the Company. These provisions could also have the effect of discouraging proxy contests and make it more difficult for shareholders to elect directors of their choosing or prevent us from taking other corporate actions that shareholders may desire.

Risks Related to Being a Relatively New Public Company

We are an emerging growth company, and any decision on our part to comply only with certain reduced reporting and disclosure requirements applicable to emerging growth companies could make our common stock less attractive to investors.

We are an “emerging growth company” as defined by the Jumpstart Our Business Startups Act of 2012 (JOBS Act). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards until such time as those standards apply to private companies. We have elected to use this exemption from new or revised accounting standards and, therefore, we will not be subject to the same new or revised accounting standards as other public companies that have not made this election.

In addition, as an emerging growth company under the JOBS Act we are only subject to one portion of Section 404 of the Sarbanes-Oxley Act of 2002 at this time—management reporting on the assessment of internal control over financial reporting (we are not currently required to have our independent auditors issue a report addressing these assessments). Assuming we have not ceased to qualify as an “emerging growth company” earlier, we will be required to comply with both the management and the auditor assessment of internal control over financial reporting requirements of Section 404 at the time we file our annual report for 2024.

For as long as we continue to be an emerging growth company, we also intend to take advantage of certain other exemptions from various reporting requirements that are applicable to other public companies including, but not limited to, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and shareholder approval of any golden parachute payments not previously approved. We cannot predict if investors will find our common stock less attractive because we will rely on these exemptions. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our stock price may be more volatile.

We will remain an emerging growth company until the earliest of (i) the last day of the year which we have total annual gross revenue of $1.07 billion or more; (ii) the last day of the year following the fifth anniversary of the date of the closing of our initial public offering; (iii) the date on which we have issued more than $1.0 billion in nonconvertible debt during the previous three years; or (iv) the date on which we are deemed to be a large accelerated filer under the rules of the SEC.

Item 1B. Unresolved Staff Comments.

None.

Item 1C. Cybersecurity.

The Company is committed to maintaining a strong cybersecurity posture devoting significant resources to cybersecurity and risk management processes to adapt to the rapidly evolving landscape and respond to emerging threats in a timely and effective manner. Our cybersecurity risk management program aligns with the National Institute of Standards and Technology (NIST) framework, which organizes cybersecurity risks into five categories: identify, protect, detect, respond and recover. The Company has designed and implemented cybersecurity policies and procedures for identifying and managing material risk from cybersecurity threats, both internally and related to the use of third-party service providers. We use various tools and methodologies to manage cybersecurity risk that are tested on a regular basis. At the tactical level, our information technology (IT) security team regularly monitors alerts and meets to discuss threat levels, trends and remediation. The Company monitors and evaluates our cybersecurity position and performance on an ongoing basis through regular vulnerability scans, penetration tests and threat intelligence feeds. Additionally, the Company maintains a formal information security training program for all employees that includes training on matters such as phishing, email security best practices and data privacy. To evaluate and enhance our cybersecurity program, it is regularly evaluated by external experts with the results of those reviews reported to senior management and the Audit Committee. We also actively engage with key vendors, industry participants and intelligence and law enforcement communities as part of our continuing efforts to evaluate and enhance the effectiveness of our information security policies and procedures.

Oversight of cybersecurity risk is maintained by the Company’s Board of Directors and is supported by the Audit Committee of our Board of Directors (Audit Committee). The Audit Committee is primarily responsible for overseeing our design, execution and administration of the Company’s enterprise risk management process, and with regard to cybersecurity risks, setting expectations and accountability for management and reviewing management’s assessment of the effectiveness of our cybersecurity controls, including policies and procedures to address our cyber risks and overseeing the Company’s cybersecurity disclosures. The Company’s information security program is managed by the Company’s Director of IT, whom reports to the Chief Financial Officer (CFO), and whose team is responsible for leading enterprise-wide cybersecurity strategy, policy, standards, architecture and processes. The Director of IT periodically briefs the Audit Committee and our CFO, as well as our Chief Executive Officer, other members of the Board of Directors and other members of our senior management as appropriate. These reports include, but are not limited to, new developments, evolving standards, vulnerability assessments, third-party and independent reviews, threat environment summaries and technological trends. When applicable, the Audit Committee and other members of the Board of Directors also receive prompt information from the CFO regarding any material cybersecurity incident and appropriate ongoing updates thereto.

As of the date of this report, the Company is not aware of any risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, that have materially affected or are reasonably likely to materially affect us, our business strategy, results of operations or financial condition. However, there can be no assurances that a cybersecurity threat or incident that could have a material impact on the Company will not occur in the future. In response to the rapidly evolving cyber threat environment, the Company continues to invest in data security and system resiliency. See also Item 1A, “Risk Factors” for additional discussion regarding risks related to information technology systems.

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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 is intended to assist in understanding and assessing the trends and significant changes in our results of operations and financial condition. Historical results may not be indicative of future performance. This discussion includes forward-looking statements that reflect our plans, estimates and beliefs. Such statements involve risks and uncertainties. Our actual results may differ materially from those contemplated by these forward-looking statements as a result of various factors, including those set forth in “Risk Factors” in Part I, Item 1A and “Cautionary Statement Regarding Forward-Looking Statements” of this Annual Report on Form 10-K. This discussion should be read in conjunction with our audited consolidated financial statements and the notes thereto included in Part II, Item 8 of this Annual Report on Form 10-K. In this discussion, we use certain financial measures that are not prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). Explanation of these non-GAAP financial measures and reconciliation to the most directly comparable GAAP financial measures are included in this Management’s Discussion and Analysis of Financial Condition and Results of Operations. Investors should not consider non-GAAP financial measures in isolation or as substitutes for financial information presented in compliance with GAAP.

All amounts are presented in thousands except share amounts, per share data, years and ratios.

Critical Accounting Estimates

The preparation of consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts and disclosures. Therefore, these estimates and assumptions affect reported amounts of assets, liabilities, revenue, expenses, and associated disclosures of contingent liabilities. Critical accounting estimates are those estimates that, in management’s view, are most important in the portrayal of our financial condition and results of operations. Management evaluates these estimates on an ongoing basis, using historical experience, consultation with third parties, and other methods considered reasonable in the particular circumstances. Nevertheless, actual results may differ significantly from our estimates. Any effects on our business, financial position, or results of operations resulting from revisions to these estimates are recognized in the accounting period in which the facts that give rise to the revision become known. The methods, estimates, and judgments that we use in applying our accounting estimates have a significant impact on the results that we report in our financial statements. These critical accounting estimates require us to make difficult and subjective judgments, often as a result of the need to make estimates regarding matters that are inherently uncertain. Those critical accounting estimates that require the most significant judgment or involve the selection or application of alternative accounting policies and are material to our consolidated financial statements are discussed further below.

Business Combinations

We record assets acquired and liabilities assumed in a business combination under the acquisition method of accounting where consideration is first assigned to identifiable assets and liabilities based on estimated fair values, with any excess recorded as goodwill. During the measurement period, which is up to one year from the acquisition date, we may adjust provisional amounts that were recognized at the acquisition date to reflect new information obtained about facts and circumstances that existed as of the acquisition date.

Determining the fair value of assets acquired and liabilities assumed requires significant judgment, including the selection of valuation methodologies. For our recent acquisition, fair value estimates of acquired property and equipment were based on independent appraisals that gave consideration to the highest and best use of the assets. The land, buildings, and improvements; and other property and equipment appraisals used one, or a combination, of the cost, market or sales comparison approaches. Significant estimates and assumptions, including recent sales prices of similar equipment, asset condition, and current and anticipated market trends, were used in determining the fair values of these assets. The assistance of an independent third-party valuation firm was used to determine the fair values and useful lives of the finite-lived intangible assets, including customer relationships and developed technology. Valuation methods used were based on management’s forecasted cash inflows and outflows and using a relief from royalty method for developed technologies and the multi-period excess earnings method for customer relationships. Assumptions used in the intangible valuations include forecasted revenue growth rates, discounted future cash flows and the weighted average cost of capital of a select peer group.

Goodwill, Intangible Assets and Other Long-Lived Assets

Our long-lived assets consist primarily of property, equipment, purchased intangible assets and goodwill. The valuation and the impairment testing of these long-lived assets involve significant judgments and assumptions, particularly as they relate to the identification of reporting units, asset groups and the determination of fair value.

We test our tangible and intangible long-lived assets subject to amortization for impairment whenever facts and circumstances indicate that the carrying amount of an asset may not be recoverable. We test goodwill and indefinite lived intangible assets for impairment annually, or more frequently if triggering events occur indicating that there may be impairment.

We have recorded goodwill and perform testing for potential goodwill impairment at a reporting unit level. A reporting unit is an operating segment, or a business unit one level below an operating segment for which discrete financial information is available, and for which management regularly reviews the operating results. Additionally, components within an operating segment can be aggregated as a single reporting unit if they have similar economic characteristics. We have concluded we have one reporting unit.

We determine the fair value of our reporting unit using an income approach. Under the income approach, we calculate the fair value of a reporting unit based on the present value of estimated future cash flows. The income approach is dependent on several key management assumptions, including estimates of future sales, gross margins, operating costs, interest expense, income tax rates, capital expenditures, changes in working capital requirements and the weighted average cost of capital or the discount rate. Discount rate assumptions include an assessment of the risk inherent in the future cash flows of the reporting unit. Expected cash flows used under the income approach are developed in conjunction with our budgeting and forecasting process.

We test our goodwill for impairment on an annual basis, and more frequently if events or changes in circumstances indicate that it might be impaired. For the years ended December 31, 2023 and 2022, there were no events or changes in circumstances that would indicate an impairment of our goodwill.

Changes to management assumptions and estimates utilized in the income approach could negatively impact the fair value conclusions for our reporting unit resulting in goodwill impairment. All key assumptions and valuations are determined by and are the responsibility of management. The factors used in the impairment analysis are inherently subject to uncertainty. We believe that the estimates and assumptions are reasonable to determine the fair value of our reporting unit, however, if actual results are not consistent with these estimates and assumptions, goodwill and other intangible assets may be overstated which could trigger an impairment charge.

For impairment testing of long-lived assets, we identify asset groups at the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset group to estimated undiscounted future cash flow expected to be generated by the assets. If the carrying amount of an asset group exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the estimated fair value of the asset group. For the year ended December 31, 2023 and 2022, there were no events or changes in circumstances that indicated a material impairment of our long-lived assets.

Determining the useful life of an intangible asset also requires judgment. Certain intangible assets are expected to have indefinite lives based on their history and our plans to continue to support and build the acquired brands. Other acquired intangible assets such as customer relationships, trade names, and non-compete agreements are expected to have determinable useful lives. The costs of determinable-lived intangibles are amortized to expense over their estimated lives.

Emerging Growth Company

The JOBS Act permits an “emerging growth company” like us to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. We are choosing to use this provision and, as a result, we will comply with new or revised accounting standards as required for private companies.

Internal Controls and Procedures

Our management is responsible for establishing and maintaining adequate internal control over financial reporting for our company. Internal control over financial reporting is a process to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of financial statements for external purposes in accordance with GAAP. Internal control over financial reporting includes maintaining records that in reasonable detail accurately and fairly reflect our transactions; providing reasonable assurance that transactions are recorded as necessary for preparation of our financial statements; providing reasonable assurance that receipts and expenditures of our assets are made in accordance with management’s authorization; and providing reasonable assurance that unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements would be prevented or detected on a timely basis. Because of its inherent limitations, internal control over financial reporting is not intended to provide absolute assurance that a misstatement of our financial statements would be prevented or detected. Furthermore, our controls and procedures can be circumvented by the individual acts of some persons, by collusion of two or more people or by management override of the control, and misstatements due to error or fraud may occur and not be detected on a timely basis.

Overview

MEC is a leading U.S.-based vertically-integrated, value-added manufacturing partner providing a full suite of manufacturing solutions from concept to production, including design, prototyping and tooling, fabrication, aluminum extrusion, coating, assembly and aftermarket components. Our customers operate in diverse end markets, including heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, agriculture, military and other end markets. We have developed long-standing relationships with our blue-chip customers based upon our commitment to “Unmatched Excellence”.

Our one operating segment focuses on producing metal components that are used in a broad range of heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, agricultural, military and other products.

Macroeconomic Conditions

The broader market dynamics over the past few years have resulted in impacts to the Company, including supply chain constraints affecting some of our customers, material cost inflation and inflationary pressures on wages and benefits due to labor availability. The Company expects some of these dynamics to continue in 2024 and could continue to have an impact on demand, material costs and labor.

How We Assess Performance

Net Sales. Net sales reflect sales of our components and products net of allowances for returns and discounts. In addition to the current macroeconomic conditions, several factors affect our net sales in any given period, including weather, timing of acquisitions and the production schedules of our customers. Net sales are recognized at the time of shipment or at delivery to the customer.

Manufacturing Margins. Manufacturing margins represents net sales less cost of sales. Cost of sales consists of all direct and indirect costs used in the manufacturing process, including raw materials, labor, equipment costs, depreciation, lease expenses, subcontract costs and other directly related overhead costs. Our cost of sales is directly affected by the fluctuations in commodity prices, primarily sheet steel and aluminum, but these changes are largely mitigated by contractual agreements with our customers that allow us to pass through these price variations based upon certain market indexes.

Depreciation and Amortization. We carry property, plant and equipment on our balance sheet at cost, net of accumulated depreciation. Depreciation on property, plant and equipment is computed on a straight-line basis over the estimated useful life of the asset. The periodic expense related to leasehold improvements and intangible assets is depreciation and amortization expense, respectively. Leasehold improvements are depreciated over the lesser of the life of the underlying asset or the remaining lease term. Our intangible assets were recognized as a result of certain acquisitions and are generally amortized on a straight-line basis over the estimated useful lives of the assets.

Other Selling, General, and Administrative Expenses. Other selling, general and administrative expenses consist primarily of salaries and personnel costs for our sales and marketing, finance, human resources, information systems, administration and certain

other managerial employees and certain corporate level administrative expenses such as incentive compensation, audit, accounting, legal and other consulting and professional services, travel, and insurance.

Other Key Performance Indicators

EBITDA, EBITDA Margin, Adjusted EBITDA and Adjusted EBITDA Margin

EBITDA represents net income (loss) before interest expense, provision (benefit) for income taxes, depreciation and amortization. EBITDA Margin represents EBITDA as a percentage of net sales for each period.

Adjusted EBITDA represents EBITDA before CEO transition costs, stock-based compensation expense, Mid-States Aluminum (MSA) acquisition related costs, loss on extinguishment of debt, field replacement claim, Hazel Park transition and legal costs due to the former fitness customer, costs recognized on step-up of MSA acquired inventory, impairment charges on long-lived assets and inventory and gain on contracts specifically purchased to meet obligations under the agreement with our former fitness customer and Chief Operating Officer (COO) restructuring costs. Adjusted EBITDA Margin represents Adjusted EBITDA as a percentage of net sales for each period. These metrics are supplemental measures of our operating performance that are neither required by, nor presented in accordance with, GAAP. These measures should not be considered as an alternative to net income (loss) or any other performance measure derived in accordance with GAAP as an indicator of our operating performance. We present EBITDA, EBITDA Margin, Adjusted EBITDA and Adjusted EBITDA Margin as management uses these measures as key performance indicators, and we believe they are measures frequently used by securities analysts, investors and other parties to evaluate companies in our industry. These measures have limitations as analytical tools and should not be considered in isolation or as substitutes for analysis of our results as reported under GAAP.

Our calculation of EBITDA, EBITDA Margin, Adjusted EBITDA and Adjusted EBITDA Margin may not be comparable to the similarly named measures reported by other companies. Potential differences between our measures of EBITDA and Adjusted EBITDA compared to other similar companies’ measures of EBITDA and Adjusted EBITDA may include differences in capital structure and tax positions.

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Consolidated Results of Operations

A discussion regarding our financial condition and results of operations for the twelve months ended December 31, 2023 compared to the twelve months ended December 31, 2022 is presented below. A discussion regarding our financial condition and results of operations for the twelve months ended December 31, 2022 compared to the twelve months ended December 31, 2021 can be found under Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” in our Annual Report on the Form 10-K for the fiscal year ended December 31, 2020,2022, which was filed with the SEC on March 1, 2023 and is available on the SEC’s website at www.sec.gov, as filedwell as our website at www.ir.mecinc.com.

Twelve Months Ended December 31, 2023 Compared to Twelve Months Ended December 31, 2022

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Net Sales. Net sales were $588,425 for the twelve months ended December 31, 2023 as compared to $539,392 for the twelve months ended December 31, 2022, an increase of $49,033, or 9.1%. This increase was primarily due to the acquisition of MSA, increased organic sales volumes within our commercial vehicle, powersports and military end markets and continued price discipline. These increases were slightly offset by softening demand in our construction and agriculture end markets, lower material price pass-throughs to customers and United Auto Workers labor union strikes impacting a few of our customers that occurred in the fourth quarter of the current period.

Manufacturing Margins. Manufacturing margins were $69,703 for the twelve months ended December 31, 2023 as compared to $61,069 for the twelve months ended December 31, 2022, an increase of $8,634, or 14.1%. The increase was primarily driven by the above-mentioned organic volume growth, MSA acquisition and commercial price actions. These items were partially negated by unabsorbed fixed costs associated with new project launches, a one-time field replacement claim, higher employee healthcare expenses, the non-recurring inventory step-up expense associated with the MSA acquisition and restructuring costs related to the former COO.

Manufacturing margin percentages were 11.8% for the twelve months ended December 31, 2023 as compared to 11.3% for the twelve months ended December 31, 2022, an increase of 0.5%. The increase was attributable to the items discussed in the preceding paragraph.

Amortization of Intangible Assets. Amortization of intangible assets were $7,742 for the twelve months ended December 31, 2023 as compared to $6,952 for the twelve months ended December 31, 2022, an increase of $790, or 11.4%. This increase was solely due to the amortization expense associated with the identifiable intangible assets from the MSA acquisition. Refer to Note 2 – Acquisitions within the Notes to Consolidated Financial Statements for additional information related to these identifiable intangible assets.

Profit Sharing, Bonuses and Deferred Compensation Expenses. Profit sharing, bonuses and deferred compensation expenses were $11,588 for the twelve months ended December 31, 2023 as compared to $7,997 for the twelve months ended December 31, 2022, an increase of $3,591, or 44.9%. The increase was primarily due to deferred compensation expense during the current year period versus a credit during the prior year period due to fluctuations within the financial markets, the Company’s contributions to the 401(k) match being higher than the prior year period discretionary 401(k) accrual and less stock-based compensation expense in the prior year period due to increased forfeitures of unvested awards, slightly offset by lower bonus expense.

Other Selling, General and Administrative (SG&A) Expenses. Other selling, general and administrative expenses were $30,182 for the twelve months ended December 31, 2023 as compared to $24,692 for the twelve months ended December 31, 2022, an increase of $5,490, or 22.2%. The increase was predominantly attributable to the incremental SG&A and transactions costs related to the acquisition of MSA, increased salaries, wages and benefits, recruiting fees and higher professional fees related to the Company preparing to be Sarbanes-Oxley Act Section 404(b) compliant for 2024 and higher legal fees associated with the on-going litigation with our former fitness customer, partially offset by CEO transition costs incurred during the prior year period.

Impairment of Long-Lived Assets and Gain on Contracts. At December 31, 2021, there was uncertainty as to the level of demand from the former fitness customer. The Company received a notification from this customer in February 2022 resulting in a change in forecasted future cash flow, triggering an impairment assessment of assets purchased, and assets the Company committed to purchase, to meet obligations under the agreement with the former fitness customer as of December 31, 2021. The notification informed the Company that it did not forecast any demand for any products or parts that were the subject of the agreement between the Company and the customer for the remainder of the agreement’s term, which ends in March 2026. Given the circumstances, GAAP required the Company to assess whether the assets were impaired. As a result of this assessment, the Company recorded an impairment on the assets purchased and loss on contracts agreed upon specifically to meet obligations under the agreement with the former fitness customer. Consequently, the Company recorded an impairment of long-lived assets and loss on contracts of $16,151 in the fourth quarter of 2021.

During the twelve months ended December 31, 2022, the Company was able to cancel $2,257 of purchase commitments for property, plant and equipment that had been recorded as an impairment of long-lived assets and loss on contracts at December 31, 2021, as previously described. The cancellation of purchase commitments resulted in the reversal of previously recorded impairment expense. Additionally, the Company was able to sell property, plant and equipment resulting in a gain of $2,089 that had previously been recorded as an impairment of long-lived assets and written down to fair value at December 31, 2021. There was no further gain on contracts attributable to the impairment recorded in 2021 during the twelve months ended December 31, 2023.

Interest Expense. Interest expense was $11,092 for the twelve months ended December 31, 2023 as compared to $3,380 for the twelve months ended December 31, 2022, an increase of $7,712, or 228.2%. The change is due to higher borrowing levels to finance the acquisition of MSA, which closed on July 1, 2023, and increased interest rates as compared to the prior year period.

Provision for Income Taxes. Income tax expense was $1,039 for the twelve months ended December 31, 2023 as compared to $3,667 for the twelve months ended December 31, 2022. The decrease of $2,628 is primarily due to higher net income and comprehensive income in the prior year period. Please reference Note 8��– Income Taxes in the Notes to Consolidated Financial Statements for further details.

Due to the factors described in the preceding paragraphs, Adjusted EBITDA increased, while net income, comprehensive income, EBITDA, EBITDA Margin and Adjusted EBITDA Margin decreased during 2023.

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Liquidity and Capital Resources

The following is a summary of our cash flows from operating, investing, and financing activities, as reflected in the Consolidated Statement of Cash Flows:

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Cash Flows Analysis Twelve Months Ended December 31, 2023 Compared to Twelve Months Ended December 31, 2022

Operating Activities. Cash provided by operating activities was $40,363 for the twelve months ended December 31, 2023 as compared to $52,426 for the twelve months ended December 31, 2022. Of the $12,063 decrease in operating cash flows, $17,562 was due to a payout of deferred compensation to a retired Company executive. The remaining difference of an increase in cash provided by operating activities of $5,499 as compared to the prior year period is largely driven by accounts receivable and inventory decreasing due to the Company’s ongoing collections efforts and initiatives to implement lean inventory management processes, respectively, partially offset by a decrease in accounts payable resulting from reduced capital expenditures. Additionally, cash provided by operating activities were negatively impacted by a reduction in accrued liabilities due to the Company implementing a match program in the 401(k) Plan requiring the employer contribution to be paid concurrently with payroll. In the prior year period, a discretionary employer contribution was accrued throughout the year and paid after the year ended December 31, 2022.

Investing Activities. Cash used in investing activities was $104,132 for the twelve months ended December 31, 2023, as compared to $50,668 for the twelve months ended December 31, 2022. The $53,464 increase in cash used in investing activities was mainly due to the acquisition of MSA, which was completed on July 1, 2023, partially offset by less capital investments in the current year period due to the completion of the capital investment in the Company’s Hazel Park, MI facility at the end of 2022.

Financing Activities. Cash provided by financing activities was $63,314 for the twelve months ended December 31, 2023, as compared to cash used in financing activities of $1,749 for the twelve months ended December 31, 2022. The $66,063 increase was primarily due to the use of funds to purchase MSA, partially offset by higher debt repayments that were able to be made as a result of our decreased level of capital investment. Under our share repurchase program, the Company purchased $2,661 of common stock in 2023 as compared to $4,947 of its common stock in 2022. The Company’s decision to repurchase additional shares in 2024 will depend on business conditions, free cash flow generation, other cash requirements and stock price. See Part II, Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities for additional information regarding share repurchases.

Amended and Restated Credit Agreement

On June 28, 2023, we entered into an amended and restated credit agreement (the Credit Agreement) with certain lenders and Wells Fargo Bank, National Association, the Agent. The Credit Agreement provides for a $250,000 revolving credit facility, with a letter of credit sub-facility, and a swingline facility in an aggregate amount of $25,000. The Credit Agreement also provides for the availability of incremental facilities to the greater of $100,000 and 125% of the Company’s twelve month trailing Consolidated EBITDA through an accordion feature. All amounts borrowed under the credit agreement mature on June 28, 2028.

Borrowings under the Credit Agreement bear interest at a fluctuating secured overnight financing rate (SOFR) plus an applicable margin based on the current consolidated total leverage ratio (which may be adjusted for certain reserve requirements), plus 1.25% to 2.75% depending on the current Consolidated Total Leverage Ratio (as defined in the Credit Agreement). Under certain circumstances, we may not be able to pay interest based on SOFR. If that happens, we will be required to pay interest at the Base Rate, which is the sum of (a) the higher of (i) the Prime Rate (as publicly announced by the Agent from time to time), (ii) the Federal Funds Rate plus 0.50%, and (iii) Adjusted Term SOFR for a one-month tenor in effect on such day plus 1.00%. The Credit Agreement also includes provisions for determining a replacement rate when SOFR is no longer available.

At December 31, 2023, the interest rate on outstanding borrowings under our revolving credit facility was 7.71%. We had availability of $102,507 under the revolving credit facility at December 31, 2023.

We must pay a commitment fee of 0.20% to 0.35% per annum on the average daily unused portion of the aggregate unused revolving commitments under the Credit Agreement. We must also pay fees as specified in the Fee Letter (as defined in the Credit Agreement) and with respect to any letters of credit issued under the Credit Agreement.

The Credit Agreement contains usual and customary negative covenants for agreements of this type, including, but not limited to, restrictions on our ability to, subject to certain exceptions, create, incur or assume indebtedness; create, incur, assume or suffer to exist liens; make certain investments; allow our subsidiaries to merge or consolidate with another entity; make certain asset dispositions; pay certain dividends or other distributions to shareholders; enter into transactions with affiliates; enter into sale leaseback transactions; and exceed the limits on annual capital expenditures. The Credit Agreement also requires us to satisfy certain financial covenants, including a minimum interest coverage ratio of 3.00 to 1.00. At December 31, 2023, our interest coverage ratio was 5.49 to 1.00. The Credit Agreement also requires us to maintain a consolidated total leverage ratio not to exceed 4.00 to 1.00 (which was increased as of July 1, 2023 from 3.50 to 1.00 in connection with the acquisition of MSA). As of December 31, 2023, our consolidated total leverage ratio was 2.14 to 1.00.

The Credit Agreement includes customary events of default, including, among other things, payment default, covenant default, breach of representation or warranty, bankruptcy, cross-default, material ERISA events, material money judgments, and failure to maintain subsidiary guarantees. If an event of default occurs, the Agent will be entitled to take various actions, including the acceleration of amounts due under the Credit Agreement, termination of the credit facility, and all other actions permitted to be taken by a secured creditor.

Other Debt

With the consummation of the MSA acquisition, the Company assumed a Fond du Lac County and Fond du Lac Economic Development Corporation term note (Fond du Lac Term Note) in the amount of $2,875. The Fond du Lac Term Note is secured by a security agreement, payable in annual installments of $500 plus interest at 2.00% and is due in full in December 2028. The short-term and long-term balance of $500 and $1,875, respectively, are recorded in other current liabilities and other long-term liabilities in the Consolidated Balance Sheets.

Capital Requirements and Sources of Liquidity

During the twelve months ended December 31, 2023 and 2022, our capital expenditures were $16,598 and $58,610, respectively. The decrease of $42,012 was driven by the completion of the capital investment in the Company’s Hazel Park, MI facility at the end of the prior year. Capital expenditures for the full year 2024 are expected to be between $15,000 and $20,000.

We have historically relied upon cash available through credit facilities, in addition to cash from operations, to finance our working capital requirements and to support our growth. At December 31, 2023, we had immediate availability of $102,507 through our revolving credit facility and the availability of incremental facilities to the greater of $100,000 and 125% of the Company’s twelve month trailing Consolidated EBITDA through an accordion feature under our Credit Agreement, subject to the covenants under the Credit Agreement. We regularly monitor potential capital sources, including equity and debt financings, in an effort to meet our planned capital expenditures and liquidity requirements. Our future success will be highly dependent on our ability to access outside sources of capital. We will continue to have access to the availability currently provided under the Credit Agreement as long as we remain compliant with the financial covenants. Based on our estimates at this time, we expect to be in compliance with these financial covenants through 2024 and the foreseeable future.

We believe that our operating cash flow and available borrowings under the Credit Agreement are sufficient to fund our operations for 2024 and beyond. However, future cash flows are subject to a number of variables, and additional capital expenditures will be required to conduct our operations. There can be no assurance that operations and other capital resources will provide cash in sufficient amounts to maintain planned or future levels of capital expenditures. In the event we make one or more acquisitions and the amount of capital required is greater than the amount we have available for acquisitions at that time, we could be required to reduce the expected level of capital expenditures and/or seek additional capital. If we seek additional capital, we may do so through borrowings under the Credit Agreement, joint ventures, asset sales, offerings of debt or equity securities or other means. We cannot

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

We are exposed to market risk from changes in customer forecasts, interest rates, and, to a lesser extent, commodities. To reduce such risks, we selectively use financial instruments and other proactive management techniques.

Customer Forecasts

The use and consumption of our components, products and services fluctuates depending on order forecasts we receive from our customers. These order forecasts can change dramatically from quarter-to-quarter dependent upon the respective markets that our customers provide products in.

Interest Rate Risk

We are exposed to interest rate risk on certain of our short- and long-term debt obligations used to finance our operations and acquisitions. We have SOFR-based floating rate borrowings under the Credit Agreement, which exposes us to variability in interest payments due to changes in the referenced interest rates.

The amount borrowed under our revolving credit facility under the Credit Agreement was $147.5 million with an interest rate of 7.71% as of December 31, 2023. Please see “Liquidity and Capital Resources – Amended and Restated Credit Agreement” in Part II, Item 7 of this Annual Report on Form 10-K and Note 4 –Debt in the Notes to Consolidated Financial Statements for more specifics.

A hypothetical 100-basis-point increase in our borrowing rates would have resulted in an additional $1.4 million of interest expense based on our variable rate debt at December 31, 2023. We do not use derivative financial instruments to manage interest risk or to speculate on future changes in interest rates. A rise in interest rates could negatively affect our cash flow.

Commodity Risk

We source a wide variety of materials and components from a network of suppliers. Commodity raw materials, such as steel, aluminum, copper, paint and paint chemicals, and other production costs are subject to price fluctuations, which could have a negative impact on our results. We strive to pass along such commodity price increases to customers to avoid profit margin erosion and in many cases utilize contracts with those customers to mitigate the impact of commodity raw material price fluctuations. As of December 31, 2023, we did not have any commodity hedging instruments in place.

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Item 8. Financial Statements and Supplementary Data.

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Report of Independent Registered Public Accounting Firm

To the shareholders and the Board of Directors of Mayville Engineering Company, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Mayville Engineering Company, Inc. and subsidiaries (the "Company") as of December 31, 2023 and 2022, the related consolidated statements of comprehensive income (loss), shareholders’ 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.

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 Public Company Accounting Oversight Board (United States) (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.

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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. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

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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.

/s/ DELOITTE & TOUCHE, LLP

Milwaukee, WI

March 6, 2024

We have served as the Company’s auditor since 2018.

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Mayville Engineering Company, Inc. and Subsidiaries

Consolidated Balance Sheets

(in thousands, except share amounts)