Companhia Siderúrgica Nacional ("CSN") (NYSE:SID) announced today that the cash tender offer (the "Tender Offer") by its subsidiary, CSN Resources S.A. ("CSN Resources"), for any and all of its outstanding US$300,000,000 in aggregate principal amount of 7.625% Senior Unsecured Guaranteed Notes due 2026 (the "Notes") (144A CUSIP / ISIN: 12644VAC2 / US12644VAC28 and Regulation S CUSIP / ISIN: L21779AD2 / USL21779AD28), fully, unconditionally and irrevocably guaranteed by CSN, expired today at 5:00 p.m., New York City time (the "Expiration Time"). At the Expiration Time, valid tenders had been received with respect to US$117,021,000 in aggregate principal amount of Notes.

CSN Resources expects to accept and make payment for all validly tendered Notes at or prior to the Expiration Time on December 8, 2023.