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DI CORPORATION — Investor Relations & Filings

Ticker · 003160 ISIN · KR7003160009 KO Manufacturing
Open in API
Filings indexed 222 across all filing types
Latest filing 2026-01-20 Major Shareholding Noti…
Country KR South Korea
Listing KO 003160

About DI CORPORATION

http://www.di.co.kr/eng/main/main.aspx

DI CORPORATION is a manufacturer specializing in semiconductor test and inspection equipment. The company provides a comprehensive portfolio of solutions centered on burn-in technology, designed to ensure the reliability and performance of semiconductor devices. Its primary product lines include various types of burn-in systems, such as Test Burn-In Testers, Monitoring Burn-In Testers, and Logic Burn-In Testers, as well as systems for Multi-Layer Ceramic Capacitors (MLCCs). Additionally, the company offers LED Burn-In & Test Systems, Multi Flexibility Testers, and customized burn-in boards for both memory and logic applications, serving a global client base in the semiconductor sector.

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 purpose of holding (management influence) for major shareholders of the company '(주)디아이'. This type of filing is specifically categorized as a 'Major Shareholding Notification' (MRQ) in the provided schema.
2026-01-20 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 (Article 147). It details changes in share ownership by major shareholders (Park Won-ho and Park Won-duk) of the company DI Corp (주식회사 디아이). This type of filing is specifically used to notify the market when a major shareholder's stake changes or when there are changes in significant shareholding agreements (such as stock collateral loans). Since it is a formal regulatory disclosure of shareholding status, it falls under the 'Major Shareholding Notification' category.
2025-12-30 Korean
주주명부폐쇄기간또는기준일설정
Regulatory Filings Classification · 95% confidence The document is a short regulatory announcement regarding the setting of a record date and shareholder register closure for an upcoming Annual General Meeting (AGM). It does not contain the full meeting materials or proxy statements, but rather serves as a formal notice of the procedural steps required for the meeting. Given its nature as a regulatory notification of a corporate event, it fits best under the RNS category.
2025-12-16 Korean
[기재정정]기타경영사항(자율공시)(종속회사의주요경영사항)
Capital/Financing Update Classification · 85% confidence The document is a voluntary disclosure (자율공시) regarding a major management matter of a subsidiary company, specifically about a contract extension and a supply contract with SK hynix. It includes details such as contract amount, period, and related financial figures. The document is short (1836 characters) and focuses on a specific business event rather than comprehensive financial results or reports. It is not an annual or interim report, audit report, or earnings release. It is also not a regulatory filing or certification. The content fits best under 'Capital/Financing Update' (CAP) as it relates to a significant contract and business update affecting the company's operations and financial outlook.
2025-10-30 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, specifically regarding collateral agreements (stock pledge extensions) by major shareholders. This falls under the category of Major Shareholding Notification (MRQ) as it tracks significant ownership thresholds and changes in control-related contracts.
2025-09-05 Korean
[기재정정]기타경영사항(자율공시)(종속회사의주요경영사항)
Regulatory Filings Classification · 100% confidence The document is a regulatory filing from the Korean DART system (indicated by the structure and language) regarding a 'Correction Report' (정정신고) for a previously disclosed 'Major Management Matter' (기타 경영사항). Specifically, it updates the contract end date for a semiconductor equipment supply agreement with SK Hynix. Since this is a general regulatory announcement regarding a business contract update that does not fit into specific categories like M&A, dividends, or share issues, it falls under the 'Regulatory Filings' category.
2025-08-29 Korean

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