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DOOSAN TESNA Inc. — Investor Relations & Filings

Ticker · 131970 ISIN · KR7131970006 KO Professional, scientific and technical activities
Open in API
Filings indexed 313 across all filing types
Latest filing 2026-03-05 Director's Dealing
Country KR South Korea
Listing KO 131970

About DOOSAN TESNA Inc.

http://doosan-tesna.com/

DOOSAN TESNA Inc. is a specialized provider of semiconductor testing services, operating as a key part of the back-end manufacturing process. The company offers a comprehensive range of test solutions, including wafer testing, probe testing, final testing, and packaging tests. Its core expertise lies in testing advanced semiconductor products such as System on Chip (SoC) and CMOS Image Sensor (CIS). DOOSAN TESNA also engages in test program development, aiming to deliver a total test solution that covers the entire post-fabrication lifecycle for its clients in the semiconductor industry.

Recent filings

Filing Released Lang Actions
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 1% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' (Report on Ownership of Specific Securities by Executives and Major Shareholders). It details a change in share ownership by an executive (Kim Yoon Keon) of Doosan Tesna due to the vesting of Restricted Stock Units (RSU). This type of filing is a standard regulatory requirement for insider transactions and ownership changes, which falls under the 'Director's Dealing' category.
2026-03-05 Korean
주식등의대량보유상황보고서(약식)
Major Shareholding Notification Classification · 1% confidence The document is a '주식등의 대량보유상황보고서' (Report on Large Shareholding), which is a standard regulatory filing in South Korea (often referred to as the '5% rule' report). It details the changes in share ownership by Samsung Asset Management in Doosan Tesna. This type of filing is specifically categorized as a 'Major Shareholding Notification' (MRQ) in the provided schema.
2026-03-04 Korean
자기주식처분결과보고서
Transaction in Own Shares Classification · 1% confidence The document is a 'Report on the Results of Disposal of Treasury Shares' (자기주식처분결과보고서) filed with the Financial Supervisory Service of South Korea. It details the specific execution of a treasury share disposal, including the number of shares, the date of disposal, and the purpose (RSU vesting). This falls under the category of a company reporting the sale or transfer of its own shares, which is classified as 'Transaction in Own Shares' (POS).
2026-03-03 Korean
대규모기업집단현황공시[분기별공시(개별회사용)]
Regulatory Filings Classification · 1% confidence The document is a 'Corporate Group Status Disclosure' (기업집단현황공시) filed by Doosan Tesna. It provides specific regulatory disclosures regarding group affiliation, circular shareholding, and inter-company transactions as required by Korean fair trade regulations. Since it is a regulatory disclosure document that does not fit into specific categories like financial reports or earnings releases, it falls under the general regulatory filing category.
2026-02-27 Korean
지급수단별ㆍ지급기간별지급금액및분쟁조정기구에관한사항
Regulatory Filings Classification · 1% confidence The document is a regulatory disclosure regarding payment methods, payment periods, and dispute resolution mechanisms under the Subcontracting Act (Article 13-3). It is a specific, structured disclosure required by Korean regulatory authorities for corporate transparency. Since it does not fit into categories like financial reports, earnings releases, or shareholder communications, it falls under the 'Regulatory Filings' category.
2026-02-13 Korean
매출액또는손익구조30%(대규모법인은15%)이상변동
Management Reports Classification · 1% confidence The document is a regulatory filing from Doosan Tesna regarding a significant change (over 15%) in revenue and profit structure for the fiscal year 2025 compared to 2024. It provides key financial highlights (revenue, operating profit, net income) and explains the reasons for the variance. This type of disclosure is a standard regulatory requirement for listed companies to announce preliminary financial results or significant changes in financial performance before the final audit report is finalized. It fits the definition of an Earnings Release (ER) as it provides the initial announcement of financial results and key highlights.
2026-02-10 Korean

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