National Steel Co. Files 6-K for June 30, 2025 Period

TL;DR

CSN (National Steel Co.) filed its 6-K for Q2 2025, confirming 20-F reporting for foreign private issuers.

AI Summary

Companhia Siderúrgica Nacional (CSN), also known as National Steel Company, filed a Form 6-K on August 15, 2025, reporting for the period ending June 30, 2025. The filing indicates CSN is a foreign private issuer and will file its annual reports under Form 20-F. The company's principal executive office is located in Sao Paulo, Brazil.

Why It Matters

This filing provides an update on National Steel Co.'s reporting status as a foreign private issuer, which is relevant for investors tracking its compliance and financial reporting schedule.

Risk Assessment

Risk Level: low — This is a routine reporting form for a foreign private issuer and does not contain specific financial performance data or significant corporate actions.

Key Players & Entities

• Companhia Siderúrgica Nacional (company) — Registrant
• National Steel Company (company) — English translation of Registrant's name
• 0001292814-25-003083 (filing_id) — Accession Number
• 20250815 (date) — Filing Date
• 20250630 (date) — Period of Report
• Sao Paulo, Brazil (location) — Principal Executive Office Location

FAQ

Key Financial Figures

• $ — inancial statements (In thousands of R$, unless otherwise stated) 1. DESCRIPTI

Filing Documents

• siditr2q25_6k.htm (6-K) — 1967KB
• siditr2q256k_001.jpg (GRAPHIC) — 46KB
• siditr2q256k_002.jpg (GRAPHIC) — 295KB
• siditr2q256k_003.jpg (GRAPHIC) — 164KB
• siditr2q256k_005.jpg (GRAPHIC) — 6KB
• siditr2q256k_004.jpg (GRAPHIC) — 17KB
• 0001292814-25-003083.txt ( ) — 2694KB

financial statements

financial statements Companhia Siderúrgica Nacional S.A. of Income (In thousands of Reais) Consolidado Controladora Consolidado Controladora Six-month period ended Six-month period ended Three-month period ended Three-month period ended Notes 6/30/2025 6/30/2024 6/30/2025 6/30/2024 6/30/2025 6/30/2024 6/30/2025 6/30/2024 Net Revenue 23 21,600,915 20,594,732 8,666,001 8,871,519 10,693,286 10,881,740 4,175,677 4,663,735 Costs of goods sold and services rendered 24 (16,342,573) (15,414,669) (8,048,779) (8,555,029) (7,967,187) (7,892,701) (3,844,781) (4,454,735) Gross profit 5,258,342 5,180,063 617,222 316,490 2,726,099 2,989,039 330,896 209,000 Operating (expenses)/income (2,727,949) (2,983,619) (280,700) (1,023,331) (1,083,343) (1,375,530) 193,621 (474,152) Selling expenses 0 (2,293,241) (2,561,916) (414,881) (413,670) (1,233,009) (1,363,352) (209,599) (210,782) General and administrative expenses 0 (480,923) (430,917) (195,904) (191,176) (263,525) (224,064) (107,690) (103,146) Equity in results of affiliated companies 9 245,227 191,599 741,975 (76,814) 166,793 98,279 652,598 33,081 Other operating (expenses)/income, net 25 (199,012) (182,385) (411,890) (341,671) 246,398 113,607 (141,688) (193,305) Other operating income 143,809 604,280 142,310 108,506 76,794 546,371 87,460 42,031 Other operating expenses (342,821) (786,665) (554,200) (450,177) 169,604 (432,764) (229,148) (235,336) Income before financial income (expenses) 2,530,393 2,196,444 336,522 (706,841) 1,642,756 1,613,509 524,517 (265,152) Financial income (expenses), net 26 (3,750,586) (2,619,918) (1,831,827) (958,802) (1,900,239) (1,495,391) (1,047,288) (565,066) Financial income 825,975 718,966 430,447 334,987 270,918 342,437 182,095 139,316 Finan

financial statements

financial statements (In thousands of R$, unless otherwise stated) 1. DESCRIPTION OF BUSINESS Companhia Siderúrgica Nacional (CSN) is a publicly-held corporation, headquartered in the capital of the State of São Paulo. Founded on April 9, 1941 during the Getúlio Vargas government, the Company was privatized in 1993. CSN ("Company"), together with its subsidiaries, controlled entities, jointly controlled entities and affiliates (referred to as "Group"), operates in five main business segments: (i) Steel industry: production and marketing of flat and long steels; (ii) Mining: mining and processing of iron ore, tin, limestone and dolomite, as well as the sale of iron ore; (iii) Cements: production and marketing of bagged and bulk cements, as well as aggregates and other related products; (iv) Energy: production and sale of energy from renewable sources; (v) Logistics: participations in railways, concession of ports and road fleet. CSN is listed on São Paulo's B3 – Brasil, Bolsa, Balcão stock exchange under the code CSNA3, where its shares are traded, and on NYSE - United States stock exchange under the code SID. Additionally, its subsidiaries CSN Mineração S.A. and Companhia Estadual de Geração de Energia Elétrica are publicly traded, and CSN Mineração S.A. trades shares of common stock at B3 under the code CMIN3. CSN Group has a significant business diversification, being one of the largest steel producers in Brazil, the second largest exporter of iron ore and a pioneer in the stacking of tailings for de-characterization of dams. It also occupies the position of the second largest player in the cement sector in the country. · Going Concern: Management understands that the Company has adequate resources to continue its operations. Accordingly, the Company's financial statements for the year ended June 30, 2025 have been prepared on a going

financial statements

financial statements: Note 2.d - Material accounting policies Note 2.f - Adoption of new requirements, standards, amendments and interpretations Note 9.b - Additional information on direct and indirect subsidiaries Note 9.c - Main events occurred in subsidiaries in 2024 and 2023 Note 11.a - Assets with indefinite useful lives Note 12 – Impairment of assets Note 19 - Taxes in installments Note 22.a - Transactions with controllers Note 22.c - Other unconsolidated related parties Note 30 - Employee benefits Note 31 - Commitments Note 32 - Insurance The provided individual and consolidated financial information was approved by Management as of July 31, 2025. 2.c) Functional and presentation currency The accounting records included in the financial information of each of the Company's subsidiaries are measured using the currency of the main economic environment in which each subsidiary operates ("functional currency"). The parent company's interim and consolidated information are presented in Brazilian reals (BRL), which is the Company's functional currency and reporting currency. Transactions in foreign currencies are translated into the functional currency using the exchange rates prevailing on the dates of the transactions or valuation, in which the items are remeasured. The balances of the asset and liability accounts are translated at the exchange rate on the balance sheet date. As of June 30, 2025, US$ 1.00 is equivalent to BRL 5.4571 (BRL 6.1923 on December 31, 2024) and 1.00 is equivalent to BRL 6.4230 (BRL6.4363 on December 31, 2024) according to rates obtained from the Central Bank of Brazil's website. (In thousands of R$, unless otherwise stated) 2.d) Statement of value added According to Federal Law 11.638/07, the presentation of the statement of value added is required for all publicly-held companies. These statements were prepared in accordance with CPC 09 (R1) – Statement of Value Added. IFRS does not require the presentation

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View this 6-K filing on SEC EDGAR