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POSCO STEELEON Co.,Ltd. — Investor Relations & Filings

Ticker · 058430 ISIN · KR7058430000 KO Telecommunications, computer programming, consultancy, computing infrastructure, and other information service activities
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Filings indexed 273 across all filing types
Latest filing 2026-05-14 Interim / Quarterly Rep…
Country KR South Korea
Listing KO 058430

About POSCO STEELEON Co.,Ltd.

https://www.poscosteeleon.com/en/main.do

POSCO STEELEON Co., Ltd. is a specialized manufacturer of surface-treated steel sheets. The company's primary product portfolio includes color steel sheets, hot-dip galvanized steel sheets, and aluminized steel sheets. These materials are engineered for a wide range of applications, serving key sectors such as home appliances, automotive components, and construction materials. As a key affiliate of the POSCO Group, the company focuses on producing high-quality, value-added steel products.

Recent filings

Filing Released Lang Actions
분기보고서 (2026.03)
Interim / Quarterly Report Classification · 95% confidence The document is titled “분기보고서” (Quarterly Report) for the first quarter of fiscal year ending 2026-03-31. It contains full financial statements, notes, management analysis, etc., for a period shorter than a full fiscal year. This matches the category for an Interim/Quarterly Report (IR). Q1 2026
2026-05-14 Korean
최대주주등소유주식변동신고서
Major Shareholding Notification Classification · 100% confidence The document is titled '최대주주등소유주식변동신고서' which translates to 'Major Shareholding Change Report'. It details changes in share ownership by major shareholders, including specific dates, share counts, and ownership percentages. The content focuses on reporting changes in significant share ownership levels, such as stock splits and purchases by major shareholders. There is no indication of financial statements, management discussion, or other report types. The document length is 2596 characters, which is consistent with a notification rather than a full report. Therefore, the document fits the category of Major Shareholding Notification (MRQ).
2026-05-06 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 100% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' which translates to 'Report on Ownership Status of Specific Securities by Executives and Major Shareholders.' It includes detailed information about the ownership of shares and securities by an executive (천 시 열) of the company 포스코스틸리온 주식회사. The document contains data on shareholding amounts, changes due to stock splits, and ownership percentages. This type of report corresponds to notifications about personal share transactions or holdings by company directors and executives, which matches the definition of 'Director's Dealing' filings. The document length is 2515 characters, which is consistent with a detailed ownership report rather than a brief announcement or a full financial report. Therefore, the correct classification is 'DIRS' (Director's Dealing).
2026-05-06 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Major Shareholding Notification Classification · 100% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' which translates to 'Report on Ownership Status of Specific Securities by Executives and Major Shareholders.' It contains detailed information about the ownership of securities by an individual named 윤석철, including share counts, ownership percentages, and changes due to stock splits. The document is addressed to regulatory bodies such as the Securities and Futures Commission and the Korea Exchange, indicating it is a formal ownership disclosure. This matches the description of a Major Shareholding Notification, which reports changes in significant share ownership levels or insider holdings. The document length is 2506 characters, and it contains substantive data about share ownership rather than just an announcement or certification. Therefore, the appropriate classification is Major Shareholding Notification (MRQ).
2026-05-06 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Major Shareholding Notification Classification · 100% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' which translates to 'Report on Ownership Status of Specific Securities by Executives and Major Shareholders.' It contains detailed information about the ownership of securities by an individual named 조명래, including the number of shares owned, changes in ownership, and related dates. The document is addressed to regulatory bodies such as the Securities and Futures Commission and the Korea Exchange, indicating it is a formal ownership disclosure. This matches the definition of a Major Shareholding Notification, which involves reporting changes in significant share ownership levels. The document length is 2506 characters, which is consistent with a detailed ownership report rather than a brief announcement or certification. Therefore, the appropriate classification is Major Shareholding Notification (MRQ).
2026-05-06 Korean
연결재무제표기준영업(잠정)실적(공정공시)
Earnings Release Classification · 95% confidence The document is titled as a preliminary (잠정) consolidated financial performance announcement for the first quarter of 2026, with specific dates for the reporting period (2026-01-01 to 2026-03-31). It contains summarized financial data such as sales, operating profit, and net income, with comparisons to previous periods. The document explicitly states that the figures are provisional and subject to change after audit review. The length is 2239 characters, which is relatively short and typical for a preliminary earnings announcement rather than a full interim report. There is no detailed financial statement or comprehensive analysis, only key financial highlights. The document is an initial announcement of quarterly financial results, fitting the definition of an Earnings Release (ER). Q1 2026
2026-04-30 Korean

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