NOTICE TO THE MARKET

COMPANHIA SIDERÚRGICA NACIONAL
Corporate Taxpayer's ID (CNPJ/MF): 33.042.730/0001-04
Publicly-held Company
COMPANHIA SIDERURGICA NACIONAL ("Company") hereby informs that it has concluded the extension of part of the debt with Caixa Econômica Federal, amounting to R$ 2.57 billion. As a result, the Company shifts maturities in this amount foreseen for
2016 and 2017 for the period between 2018 and 2022, equally distributed in installments.
São Paulo, September 3, 2015.

Gustavo Henrique Santos de Sousa

Executive Officer

distributed by