Tranche Update on Mayville Engineering Company, Inc.'s Equity Buyback Plan announced on November 4, 2021.

Mayville Engineering Company, Inc. is a 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. Its customers operate in diverse end markets, such as heavy-and medium-duty commercial vehicles, construction and access equipment, powersports, agriculture, military and other end markets. Its capabilities include 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 painting, are used in a variety of applications. It serves its customers through 23 strategically located United States facilities, across seven states, with over three million square feet of manufacturing capacity.