Mayville Engineering Company, Inc.

Mayville Engineering Company, Inc. (NYSE: MEC) is a leading U.S.-based, vertically integrated value-added manufacturing partner headquartered in Milwaukee, Wisconsin. The company operates through 27 strategically located facilities across nine states, with approximately 3.5 million square feet of manufacturing capacity and approximately 2,400 full-time employees. More information is available at www.mecinc.com.

MEC provides a comprehensive suite of manufacturing solutions spanning the entire product lifecycle, from design and prototyping through production, fabrication, coating, assembly, and aftermarket components. The company's core capabilities include metal fabrication, metal stamping, aluminum extrusion and fabrication, tube bending and forming, robotic welding, laser cutting, and custom coatings including military-certified CARC painting. MEC has been ranked as the largest fabricator in the United States for 15 consecutive years by The Fabricator magazine.

The company serves a diverse customer base of globally recognized original equipment manufacturers across multiple end markets. Primary end markets include heavy- and medium-duty commercial vehicles, construction and access equipment, powersports, data center and critical power, agriculture, and military applications. In 2025, the top customer accounted for 13.6 percent of net sales while the top ten customers represented 62.3 percent of revenue, collectively serving hundreds of platforms across various end markets. Key customers include PACCAR Inc. and John Deere, with the latter representing over 65 individual platforms across five market segments.

MEC's competitive advantages stem from its embedded relationships with blue-chip customers, extensive manufacturing capabilities offering one-source solutions, leading market position in a highly fragmented industry, and significant end-market and customer diversification. The company has invested substantially in technology-enabled infrastructure including fiber lasers, robotic automation, collaborative robots, and advanced welding equipment to enhance productivity, quality, and efficiency while reducing labor costs and energy consumption.

Founded as a corporation in 1945, MEC operates under a business excellence framework focused on high-performance culture, operational excellence, commercial growth, disciplined capital deployment, and human resource optimization. The company maintains no unionized workforce and structures customer contracts to pass through commodity price volatility, limiting margin exposure to raw material fluctuations.