USA Rare Earth (USAR) Invests €40M in French Processor Carester for 12.5% Ownership

Key Highlights USA Rare Earth has entered a term sheet agreement to purchase approximately 12.5% of Carester SAS, a French rare earth processing company, for roughly €40 million. The transaction provides USAR with rights to Carester’s oxide production, proprietary technology, and a 15-year supply and offtake arrangement. Carester will receive heavy rare earth concentrate from USAR’s Round Top project in Texas as part of the exchange. The collaboration bolsters a rare earth processing center in Lacq, France, featuring a 3,750 metric ton per annum metal and alloy facility. USAR shares declined approximately 2.8% on Thursday; William Blair maintained its Outperform recommendation after the news. On April 9, 2026, USA Rare Earth (USAR) revealed a strategic equity position in Carester, a French rare earth processing specialist, marking another step in the company’s mission to establish a rare earth value chain independent of Chinese control. USA Rare Earth, Inc. Nasdaq: $USAR USA Rare Earth announces Carester investment and strategic partnership in France. The transaction secures approximately 12.5% equity in Carester SAS, along with offtake rights, engineering IP access, and long-term feedstock supply from the… — John Stocks (@john_stocks1) April 9, 2026 The Texas-based firm executed a term sheet to purchase roughly 12.5% of Carester SAS, with investment partner InfraVia acquiring a matching stake. Transaction completion is projected within 30 days, subject to due diligence completion and final documentation. USA Rare Earth Inc, USAR The roughly €40 million investment secures USAR’s rights to oxide production volumes, access to Carester’s technical expertise and proprietary processes, and integration with Carester’s Lacq, France operations — presently under development and scheduled to begin production in late 2026. As part of the arrangement, USAR commits to delivering heavy rare earth concentrate from its Round Top project in West Texas to Carester’s processing fac...