en.Wedoany.com Reported - Nippon Steel Corporation completed its full acquisition of United States Steel Corporation (U.S. Steel) in June 2026, with the latter officially becoming a wholly owned subsidiary of Nippon Steel. The company plans to invest $11 billion in capital into U.S. Steel by the end of 2028, and through the transfer of operational, equipment, and product technologies, it expects to achieve $3 billion in annual structural efficiency improvements by 2030. In March 2026, Nippon Steel finalized a permanent refinancing arrangement of approximately ¥2 trillion, including about ¥900 billion in coordinated financing led by the Japan Bank for International Cooperation, fully replacing the short-term bridge loans previously used for the acquisition.
Headquartered in Tokyo, Japan, and established in 1970, Nippon Steel is one of the world's leading steel manufacturers, with products covering automotive steel, electrical steel, construction materials, and specialty steel. United States Steel Corporation, founded in 1901 and headquartered in Pittsburgh, Pennsylvania, was once the largest steel company in the United States. The acquisition began in December 2023 and took 18 months, undergoing a complex process that included the Biden administration blocking it on national security grounds, both parties filing lawsuits, and the Trump administration finally approving and signing the National Security Agreement in May 2025. Under the agreement, the U.S. government received a "golden share," granting it veto power over major operational decisions involving the closure of factories within the United States. U.S. Steel stated it would continue to maintain its "American identity." In March 2026, a U.S. federal district court dismissed a consumer antitrust lawsuit that had sought to overturn this $14.9 billion cooperation deal.
Nippon Steel Chief Financial Officer Takahiko Iwai stated that there is no need to cut U.S. Steel's production capacity, and the business is expected to contribute profits in fiscal year 2026. The company has dispatched approximately 100 employees to the United States to share best practices and advanced technologies. The Big River 2 plant is already operating near full capacity. In terms of operational integration, the U.S. Department of Commerce announced in Pittsburgh plans to build a new hot strip mill at the Mon Valley Works. For European operations, Nippon Steel will directly hold a controlling stake in U.S. Steel Košice (USSK), which will be renamed Nippon Steel Slovakia on October 1, 2026, serving as the core hub for European operations with an annual crude steel production capacity of 4.5 million tons. Additionally, Nippon Steel's wholly owned subsidiary Sanyo Special Steel will be merged into the parent company in April 2027.
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