4Q22 AND 2022 FINANCIAL RESULTS 2022 and 4Q22 FINANCIAL RESULT São Paulo, March 8, 2023 - Companhia Siderúrgica Nacional ("CSN") (B3: CSNA3) (NYSE: SID) discloses its fourth quarter of 2022 (4Q22) and 2022 yearly financial results in Brazilian Reais, with all financial statements consolidated in accordance with accounting practices adopted in Brazil issued by the Accounting Pronouncements Committee ("CPC"), approved by the Brazilian Securities and Exchange Commission ("CVM") and the Federal Accounting Counc ...