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NATIONAL STEEL CO — Investor Relations & Filings

Ticker · SID ISIN · US20440W1053 LEI · 529900K40TEND42S0T46 SA Manufacturing
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Filings indexed 1,237 across all filing types
Latest filing 2026-05-14 Regulatory Filings
Country BR Brazil
Listing SA SID

About NATIONAL STEEL CO

https://www.csn.com.br/

National Steel Corporation (1929-2003) was an integrated steel producer formed through the merger of Weirton Steel Company, Great Lakes Steel Corporation, and interests from the M.A. Hanna Company. The company specialized in the manufacture and supply of a wide range of steel products, including hot-rolled, cold-rolled, galvanized, and chrome-plated steels. It was a significant supplier to the automotive and container industries. The corporation's assets were sold after it filed for bankruptcy protection in the early 2000s.

Recent filings

Filing Released Lang Actions
6-K
Regulatory Filings
2026-05-14 English
6-K - NATIONAL STEEL CO (0001049659) (Filer)
Regulatory Filings
2026-04-30 English
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Director's Dealing Classification · 100% confidence The document is titled 'FORMULÁRIO INDIVIDUAL' and details securities trading activity by the company itself and its subsidiaries and affiliates. It explicitly states that no operations with securities or derivatives were conducted during the period, and it lists positions held. The content is a report on insider or company-related securities transactions, specifically about trading or holdings of shares by the company treasury. This matches the definition of 'Director's Dealing' filings, which report personal or company-related share transactions. The document is short (1264 characters) and contains detailed transactional data rather than an announcement or certification. Therefore, the correct classification is DIRS (Director's Dealing).
2026-04-06 Portuguese
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Director's Dealing Classification · 95% confidence The document is a ‘Formulário Consolidado – Negociação de Administradores e Pessoas Ligadas’ disclosing shareholdings and trades by controllers, board members and other related persons during the month of 03/2026. This matches the definition of insider trades or director dealings. Therefore, it is classified as Director’s Dealing (Code: DIRS).
2026-04-06 Portuguese
3 - NATIONAL STEEL CO (0001049659) (Issuer)
Director's Dealing
2026-03-26 English
3 - NATIONAL STEEL CO (0001049659) (Issuer)
Director's Dealing
2026-03-23 English

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