Companhia Siderúrgica Nacional in addition to the Material Fact released on February 20, 2019, informs its shareholders and the market in general that CSN Mineração SA has concluded negotiations for the amendment of its long-term iron ore supply contract with Swiss trading Glencore International AGAINST. The transaction involves prepayment to CSN Mineração of a new installment of up to USD 250,000,000.00 related to an additional iron ore supply of approximately 10 million tons over 5 years. Disbursement will occur when certain conditions precedent are met, which are customary for this type of transaction. This new tranche already reflects CSN's improved credit profile and lower financial cost and consists of a further step by the Company towards a healthy and sustainable capital structure as part of its deleveraging plan previously disclosed to the market.