Sometra SA is a Romania-based metallurgy, industrial recycling, and environmental remediation company specializing in the thermal processing of metallurgical residues and the recovery of secondary non-ferrous metals. Founded in 1939 and headquartered in Copșa Mică, Sibiu County, Romania, the company operates as a subsidiary of Metlen Energy & Metals (formerly Mytilineos S.A.). Sometra SA provides a systematic portfolio of secondary metal derivatives, construction materials, and environmental services, comprising: Waelz zinc oxides (concentrated zinc and lead oxide powders supplied as feedstock for chemical manufacturers and non-ferrous metallurgical smelters); Waelz clinker and vitrified slag (heavy, iron-rich granulated aggregates utilized in civil engineering, road infrastructure construction, and cement manufacturing); pyrometallurgical recycling and waste processing services (utilizing industrial rotary Waelz kilns for the thermal treatment of industrial dusts, hazardous metallurgical waste, and metallurgical slag); and comprehensive environmental remediation services (including industrial site decontamination, hazardous residue containment, and historical landfill rehabilitation). The company serves commercial smelting facilities, chemical manufacturers, and infrastructure developers across Romania and broader European markets. In recent corporate developments, Sometra SA initiated the formal withdrawal and delisting of its shares from the Bucharest Stock Exchange (AeRO market, Ticker: SOMR) following shareholder approvals granted at its Extraordinary General Meeting of Shareholders (AGEA) in mid-2026, resulting in the suspension of trading on the exchange. This structural shift coincides with the strategic restructuring and corporate rebranding of its parent organization into Metlen Energy & Metals. Concurrently, Sometra SA has accelerated its operational transition from historic primary smelting toward closed-loop circular economy operations, focusing capital expenditures on expanding Waelz kiln processing capacities, upgrading emission-control systems, and systematically reclaiming and processing the historical multi-million-tonne slag deposit located at its Copșa Mică industrial site.