ATI and BWXT Extend Strategic Supply Agreement to Sustain U.S. Naval Nuclear Propulsion Program Through 2030

## ATI and BWXT Strengthen Naval Nuclear Supply Chain with Five-Year Agreement ATI Inc. (NYSE: ATI) has announced the extension of its long-standing strategic partnership with BWX Technologies, Inc. (NYSE: BWXT), securing a five-year material supply agreement that will deliver critical defense materials through 2030 in support of the U.S. Naval Nuclear Propulsion Program. The agreement, announced on June 11, 2026, underscores the importance of a resilient domestic supply chain for naval nuclear materials at a time when the U.S. Navy is managing an ambitious shipbuilding and maintenance agenda, including the ongoing construction of Virginia-class submarines and the long-term development of the Columbia-class ballistic missile submarine fleet. According to the companies, the renewed agreement builds on a decades-long relationship between the two defense and industrial suppliers. ATI is a specialist in advanced alloys and specialty materials — including nickel-based superalloys and titanium — that are essential to the demanding performance and safety requirements of naval nuclear reactors. BWXT, as a primary contractor to the U.S. Naval Nuclear Propulsion Program, relies on such materials to manufacture reactor components and fuel systems for the Navy's submarine and aircraft carrier fleets. 'This kind of long-term supply commitment is precisely what the defense industrial base needs,' industry analysts have noted, pointing to persistent concerns about materials bottlenecks that have contributed to shipbuilding delays at major U.S. yards in recent years. Locking in a five-year horizon provides both parties with production planning certainty and helps insulate the program from short-term market volatility in specialty metals. The announcement carries broader significance for the maritime defense sector. The U.S. Navy's nuclear-powered fleet represents one of the most technically demanding supply chains in global industry, with strict quality, traceability, and security requirements. Agreements of this nature are critical to maintaining the industrial capacity and workforce expertise necessary to sustain fleet readiness. The deal also arrives against the backdrop of heightened allied interest in naval nuclear propulsion, including the AUKUS trilateral agreement under which Australia is set to acquire nuclear-powered submarines with U.S. and UK support — a program that will place additional demand on the same specialized materials and manufacturing ecosystem. ATI is headquartered in Dallas, Texas, while BWXT operates across multiple U.S. sites with nuclear manufacturing facilities in Virginia and Indiana. Both companies are publicly traded on the New York Stock Exchange.