 São Paulo, June 11, 2021 PRNewswire -- Companhia Siderúrgica Nacional CSN NYSE: SID announces that the cash tender offer by its Luxembourg finance subsidiary, CSN Resources S.A. CSN Resources, for any and all of its outstanding 7.625 Senior Unsecured Guaranteed Notes due 2023 the Notes 144A CUSIP ISIN 12644VAB4 US12644VAB45 and Reg S CUSIP ISIN L21779AC4 USL21779AC45, fully, unconditionally and irrevocably guaranteed by CSN, expired on June 8 at 5:00 p.m. 