NATIONAL STEEL CO (Companhia Siderúrgica Nacional) filed a Form 6-K disclosing its financial statements for the year ending December 31, 2023, with a reported paid-in capital totaling R$ 2,383,276. The filing includes comprehensive notes on capital structure, operational segments, and significant acquisitions, such as the merging of CSN Cimentos into CSN Cimentos Brasil on August 31, 2023.