Companhia Siderúrgica Nacional : Transaction Notice Between Related Partyies

TRANSACTION NOTICE BETWEEN RELATED PARTIES

COMPANHIA SIDERÚRGICA NACIONAL

Pubicly Held Company

Corporate Taxpayer: 33.042.730/0001-04

NIRE No. 35-3.0039609.0

The Companhia Siderúrgica Nacional (BOVESPA: CSNA3; NYSE: SID) in accordance with the Article 30, item XXXIII, of the Instruction of the Brazilian Securities and Exchange Commission ("CVM") No. 480, of December 7, 2009, as amended ("ICVM 480"), communicates to its shareholders and the market in general, the following transaction with related part:

Name of the Parties	Companhia Siderúrgica Nacional ("CSN" or "Company") and
	Banco Fibra S.A. ("Banco Fibra").
Transaction	Conclusion of the Private Instrument for the Purchase and Sale of
	Credit Without Obligation ("Contract")
Relationship with the Company	Banco Fibra is a company subject to common control with CSN.
Transaction Date	December 29, 2021
Subject of the Contract	Consist in the purchase of credits, by Banco Fibra, arising from
	commercial transactions of CSN with its customers, without any
	co-obligation of CSN for the settlement of said credits, pursuant to
	the Agreement.
Main Terms and Conditions	The total amount of the credits involved in the transaction was
	R$306,972,074.82 (three hundred and six million, nine hundred
	and seventy-two thousand, seventy-four reais and eighty-two
	cents), with an average maturity of 30 days.

If, when, how and to what extent the party to the transaction, its partners or administrators participated in the process:

1. the issuer's decision on the transaction, describing such participation:
   The decision-making process for carrying out the transaction above involved the analysis of Banco Fibra's proposal by the Company's executives, in a comparative method to proposals from other institutions. For the realization of the Transfer of Receivables Credit without Coobligation, the quotations of several banks were analyzed, and the decision considered the best allocation between fees and volumes within the Company objectives
2. transaction as representatives of the issuer, describing such participation:

Detailed justification of the reasons why the issuer's management considers that the transaction met commutative conditions or provided for appropriate compensatory payment, stating:

As mentioned in point "a" above, the preparation of the proposal and the negotiation of the transaction was carried out between the company's and Banco Fibra's executives independently.

1. if the issuer has requested proposals, carried out any pricing procedure, or otherwise attempted to carry out the transaction with third parties, explaining, if not, the reasons why he did not do so or, if so, the procedures performed and their results:
   Transactions, similar to that described in this document, are made by the Company in the ordinary management of its own resources and are, therefore, not exclusive operations. In addition, the Company quoted other financial institutions and evaluated the prices and conditions practiced, judging Banco Fibra's conditions as the most favorable for the traded volume. Thus, the Company's management understands that the transaction of Assignment of Receivables Credit without Coobligation with Banco Fibra observed commutative conditions and provided adequate compensatory payment, since the transaction was made under market conditions.
2. the reasons that led the issuer to carry out the transaction with the related party and not with third parties:
   The transaction was carried out with Banco Fibra, given that the conditions offered were more beneficial to the Company, compared to those offered by other financial institutions in relation to financial conditions and the operational viability of transactions.
3. the detailed description of the measures taken, and procedures taken to ensure the commuting of the operation:
   The negotiation of the terms and conditions of the transaction took place independently and was conducted directly by the company's executives, on the one hand, and Banco Fibra, on the other, in order to preserve the commuting of the operation and the best interest of the Company, without the participation of the Company's director who has a relationship with Banco Fibra.
   The Company's management believes that such procedures were sufficient and adequate to ensure the commutability of the operation and the proper compliance with the provisions of the Company's Bylaws.

São Paulo, January 7, 2022.

Marcelo Cunha Ribeiro

Executive Director of Investor Relations