Mayville Engineering Company Statement on Tornado Damage at Manufacturing Facility

Mayville Engineering Company (NYSE: MEC) (the “Company” or “MEC”), a leading value-added provider of design, prototyping and manufacturing solutions serving diverse end-markets, today announced that one of its manufacturing facilities in Mayville, Wisconsin sustained limited damage from a tornado on Thursday, May 15, 2025. All onsite employees are safe and no injuries were reported. The Company expects a minimal impact to its business and anticipates the facility will resume normal operations by early next week.

ABOUT MAYVILLE ENGINEERING COMPANY

Founded in 1945, 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. Along with process engineering and development services, MEC maintains an extensive manufacturing infrastructure with 23 facilities, of which 22 are in use, across seven states. These facilities make it possible to offer conventional and CNC (computer numerical control) stamping, shearing, fiber laser cutting, forming, drilling, tapping, grinding, tube bending, machining, welding, assembly, and logistic services. MEC also possesses a broad range of finishing capabilities including shot blasting, e-coating, powder coating, wet spray and military grade chemical agent resistant coating (CARC) painting. For more information, please visit www.mecinc.com.

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