Companhia Siderúrgica Nacional S A : MATERIAL FACT - Form 6-K

MATERIAL FACT

Companhia Siderúrgica Nacional ("CSN" or "Company"), informs its shareholders and the market in general the guidance updates, as follows:

(i)	Projection of steel sales volume at 4,480Kton in 2022 and 4,670Kton in 2023.

(ii)	Mining expansion CAPEX of approximately BRL 13.8 billion in the period of 2023-2027, related to phase 1 of the capacity addition project.

(iii)

Mining cash cost projection to a level between $19/ton and $21/ton in 2023.

(iv)	Projection of mining production volume and third-party purchases between 39-41 Mton in 2023.

(v)	Projection of EBITDA in the energy segment at BRL 23 million in 2022.

(vi)	Consolidated CAPEX projection of BRL 4.4 billion in 2023 and in the range of BRL 5.5 - BRL 6.5 billion in the period 2024-2027.

Such projections will be included in section 11 of the Companies' Reference Form and will be available on the CVM's website in http://www.cvm.gov.br/ and on the Company website in http://ri.csn.com.br/ within the legal deadline.

CSN clarifies that the information disclosed in this document represents an estimate and involves market factors beyond the Company's control. Therefore, they do not constitute a promise of performance on the part of the Company and/or its directors and, thus, may undergo further changes.

São Paulo, December 15, 2022.

Marcelo Cunha Ribeiro Executive Director of Investor Relations Companhia Siderúrgica Nacional