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SEOJIN SYSTEM CO.,LTD — Investor Relations & Filings

Ticker · 178320 ISIN · KR7178320008 LEI · 988400U9NKI8DHZ0J583 KO Manufacturing
Open in API
Filings indexed 532 across all filing types
Latest filing 2026-02-20 Major Shareholding Noti…
Country KR South Korea
Listing KO 178320

About SEOJIN SYSTEM CO.,LTD

https://www.seojinsystem.net/main/en/

Seojin System Co., Ltd. is a specialized manufacturer focusing on aluminum alloy die-casting technology. The company produces a diverse range of components and equipment for several key technology sectors. Core business areas include the manufacturing of telecommunication equipment parts, such as remote radio heads (RRH), digital units (DU), and aluminum enclosures. The company has expanded its portfolio to include critical components for energy storage systems (ESS), semiconductor manufacturing equipment, and parts for electric vehicles and batteries. Its manufacturing capabilities encompass the process from raw aluminum material to finished products, serving as a global business partner for technology-driven industries.

Recent filings

Filing Released Lang Actions
주식등의대량보유상황보고서(일반)
Major Shareholding Notification Classification · 100% confidence The document is a '주식등의 대량보유상황보고서' (Report on Large Shareholding), which is a standard regulatory filing in South Korea under the Capital Markets Act (Article 147). It details the shareholding status, changes in ownership, and contractual relationships (such as collateral agreements) of major shareholders and their special related parties. This type of filing is specifically categorized as a 'Major Shareholding Notification' (MRQ) in the provided schema.
2026-02-20 Korean
주식등의대량보유상황보고서(약식)
Major Shareholding Notification Classification · 100% confidence The document is a '주식등의 대량보유상황보고서' (Report on Large Shareholding), which is a standard regulatory filing in South Korea under the Capital Markets Act. It details changes in share ownership (acquisitions, disposals, and holdings of convertible bonds/warrants) by a major shareholder (Neo-Solutions Inc.) in a listed company (Seojin System). This type of filing is specifically categorized as a 'Major Shareholding Notification' (MRQ) in the provided schema.
2026-02-10 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 100% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' (Report on Ownership of Specific Securities by Executives and Major Shareholders). It details the share ownership changes of an executive (Lee Young-dae) at Seojin System. This is a standard regulatory filing for insider trading/shareholding changes by directors and executives, which corresponds to the 'Director's Dealing' category.
2026-02-10 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 100% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' (Report on Ownership of Specific Securities by Executives and Major Shareholders). This is a standard regulatory filing in South Korea (DART system) used by executives to disclose changes in their shareholdings, such as stock option exercises. This falls under the category of 'Director's Dealing' (DIRS), which covers insider trades and changes in ownership by company directors and executives.
2026-02-10 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 100% confidence The document is a 'Report on Ownership of Specific Securities by Executives and Major Shareholders' (임원ㆍ주요주주 특정증권등 소유상황보고서) filed with the Korean Financial Supervisory Service (FSS). This type of filing is a standard regulatory disclosure for insider trading or changes in share ownership by company directors/executives. According to the provided definitions, reports of personal share transactions by company directors and executives are classified as 'Director's Dealing' (DIRS).
2026-02-10 Korean
주식등의대량보유상황보고서(일반)
Major Shareholding Notification Classification · 100% confidence The document is a '주식등의 대량보유상황보고서' (Report on Large Shareholding), which is a standard regulatory filing in South Korea under the Capital Markets Act. It details changes in share ownership, including stock option exercises, insider transactions, and collateral agreements by major shareholders and special related parties. This falls under the category of Major Shareholding Notification (MRQ).
2026-02-09 Korean

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