LISI S.A. is a France-based industrial group specializing in the design and manufacture of high-value fastening solutions and assembly components. The company operates primarily through two main divisions: LISI Aerospace and LISI Automotive, following the divestment of its LISI Medical division in late 2025. LISI Aerospace, which accounts for over 60% of the group's revenue, is a leading global supplier of structural fasteners, engine components, and installation tools for civil and military aircraft. The LISI Automotive division produces engine mounts, wheel nuts, safety fasteners, and other mechanical components for automotive OEMs and suppliers. Tracing its origins back to a metalworking enterprise founded in 1777, LISI maintains a significant global footprint with nearly 40 production sites across Europe, North America, and Asia.