Magrathea Completes $100M Financing, Boosts U.S. Magnesium Smelting with Green Tech

Published: Jun 15, 2026 17:59

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[SMM Magnesium Express]U.S. company Magrathea announced the completion of a new round of financing, with cumulative capital support exceeding $100 million, accelerating the reconstruction of U.S. magnesium smelting capacity. The company has built the only newly constructed primary magnesium smelter in the U.S., signed multiple commercial agreements, and aims for an annual sales volume of over $500 million in the future. In March 2026, Magrathea secured a $24 million Series A funding round and established Arkansas Magnesia in a joint venture with TETRA. The first-phase commercial plant has initiated engineering design. The company has independently developed a new generation of electrolysis technology, enabling green production of metallic magnesium from seawater and brine. As the project progresses, the U.S. domestic magnesium supply chain's self-sufficiency is expected to gradually strengthen.

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