United States Steel Corporation (U.S. Steel) has filed materials with the SEC, including a definitive proxy statement on March 12, 2024, regarding a proposed transaction with Nippon Steel Corporation (NSC). The materials were disseminated to U.S. Steel stockholders starting March 12, 2024, and are available on the SEC's website and U.S. Steel's corporate site. The transaction will be presented for stockholder consideration, urging them to read all relevant documents filed with the SEC. The communication contains forward-looking statements subject to risks and uncertainties, and stockholders are cautioned not to place undue reliance on them. The proposed transaction is subject to customary closing conditions, including regulatory approvals and stockholder approval. U.S. Steel has also provided additional information to its Big River Steel segment employees through various internal channels on April 10, 2024.

United States Steel Corporation (U.S. Steel) has filed materials with the SEC, including a definitive proxy statement on March 12, 2024, regarding a proposed transaction with Nippon Steel Corporation (NSC). The materials were disseminated to U.S. Steel stockholders starting March 12, 2024, and are available on the SEC's website and U.S. Steel's corporate site. The transaction will be presented for stockholder consideration, urging them to read all relevant documents filed with the SEC. The communication contains forward-looking statements subject to risks and uncertainties, and stockholders are cautioned not to place undue reliance on them. The proposed transaction is subject to customary closing conditions, including regulatory approvals and stockholder approval. U.S. Steel has also provided additional information to its Big River Steel segment employees through various internal channels on April 10, 2024.