The two companies on Wednesday morning announced that the $14.9 billion sale, first inked in December 2023 and put through a bruising political wringer, has closed and Nippon has assumed control.

Japanese firm Nippon Steel has completed its long-sought takeover of US Steel, after agreeing to yield unusual control to the US government. Nippon's $14.9bn (£11bn) purchase of the smaller American company, will create one of the world's biggest steelmakers and turns Nippon into a major player in the US.