SID Companhia Siderurgica Nacional

  Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.  

STATEMENT OF MATERIAL FACT     

COMPANHIA SIDERÚRGICA NACIONAL

Publicly-Held Company

Corporate Taxpayer's ID (CNPJ/MF): 33.042.730/0001-04

Companhia Siderúrgica Nacional (BOVESPA: CSNA3; NYSE: SID) ("CSN" or "Company"), pursuant to Article 157, paragraph 4, of Law 6.404/76, as amended, and according to the Instruction of the Securities and Exchange Commission ("CVM") number 358/02, as amended, hereby informs its shareholders and the market that:

1- Exceptionally, the Company will not file the Financial Statements for the year ended on December 31, 2016 ("DFs 2016") with CVM within the period established by the CVM Instruction 480/09, due to the review of the accounting treatment determined upon for the transactions carried out by the Company on November 30, 2015, which resulted in the business combination of mining and related logistics activities, without changing its business structure.

2 - This review will impact the financial statements for the fiscal year ended on December 31, 2015, and will consequently impact the opening balances for the DFs 2016.

3 - Due to the technical complexity of the matter and the fact that revision work is still ongoing, with the accompanying of the external auditors, it will not be possible to close the DFs 2016 within the period established by the applicable legislation, leading to a delay in the disclosure of the DFs 2016.

 4- As a result, the Ordinary and Extraordinary Shareholders' Meeting to be held on April 28, 2017 will deliberate the following matters: (i) to establish the number of members of the Board of Directors and to elect its members; (ii) to establish the management overall annual compensation for the 2017 fiscal year; and (iii) to discuss the amendment and consolidation of the Company's bylaws. Accordingly, other matters attributed to the Ordinary Shareholders' Meeting, such as taking the management's accounts, examining, discussing and voting on the financial statements and deciding on the allocation of financial earnings for the fiscal year, will be subject to deliberation at an Extraordinary Shareholders' Meeting to be duly convened.

5- The Company is committed to disclosing the DFs 2016 reviewed by the external auditors as soon as possible. However, considering the duty to inform and act with diligence and transparency, the Company has decided to disclose to the market the main operating indicators for the year ended on December 31, 2016, not yet revised by the independent auditors, which will not be impacted by the potential adjustments that may occur as a result of the reviews that are in progress, as follows:

¹ Iron ore sales volumes include 100% of the stake in NAMISA until November 2015 and 100% of the stake in CSN Mineração (former “Congonhas Minérios”) as of December 2015. As of December 2015, iron ore volumes include sales to UPV.

² Adjusted EBITDA is calculated based on net income/loss, plus depreciation and amortization, income tax, net financial result, results from investees, other operating income (expenses) and includes the proportional share of EBITDA of the jointly-owned investees MRS Logística and CBSI. Adjusted EBITDA includes the 60% stake in Namisa, 33.27% in MRS and 50% in CBSI until November 2015 and the 100% stake in CSN Mineração, 37.27% in MRS and 50% in CBSI as of December 2015.

³Adjusted net debt and adjusted cash include the 33.27% stake in MRS, 60% in Namisa and 50% in CBSI until November 2015. As of December 2015 these lines include the 100% stake in CSN Mineração, 37.27% in MRS and 50% in CBSI, and exclude Forfaiting and Debtor Risk operations.

⁴ The managerial financial result includes the 60% stake in Namisa, 33.27% in MRS and 50% in CBSI until November 2015 and the 100% stake in CSN Mineração, 37.27% in MRS and 50% in CBSI as of December 2015.

As soon as we have a definition of the date of completion of the abovementioned work, with the review report from the external auditors, the Company will make a further announcement to the market.

São Paulo, March 27, 2017.

David Moise Salama

Investor Relations Executive Officer