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PSK INC. — Investor Relations & Filings

Ticker · 319660 ISIN · KR7319660007 KO Manufacturing
Open in API
Filings indexed 199 across all filing types
Latest filing 2026-02-19 Regulatory Filings
Country KR South Korea
Listing KO 319660

About PSK INC.

https://www.pskinc.com/

PSK INC. is a global manufacturer of semiconductor processing equipment specializing in wafer surface treatment technologies. The company is a market leader in plasma dry strip applications, providing solutions for photoresist and residue removal. Its product portfolio includes the SUPRA series for dry stripping, the INTEGER series for dry cleaning of high-aspect ratio structures, the OMNIS series for new hard mask (NHM) stripping, and the PRECIA series for wafer edge cleaning. PSK's equipment is utilized in the mass production of memory and logic devices, and the company focuses on developing core manufacturing technologies for next-generation semiconductors.

Recent filings

Filing Released Lang Actions
기업설명회(IR)개최
Regulatory Filings Classification · 1% confidence The document is a short announcement regarding an upcoming Investor Relations (IR) event (a conference in Singapore). It provides details such as the date, location, purpose, and where to find the materials. Since it is an announcement of an event and the availability of materials rather than the presentation itself, and it fits the regulatory announcement format for corporate events, it is classified as a Regulatory Filing (RNS).
2026-02-19 Korean
주식등의대량보유상황보고서(약식)
Major Shareholding Notification Classification · 1% confidence The document is a '주식등의 대량보유상황보고서' (Report on Large Shareholding of Stocks, etc.), which is a standard regulatory filing in South Korea used when an entity's shareholding in a company crosses a specific threshold (typically 5%). The document details the reporting entity (Samsung Asset Management), the target company (PSK), the number of shares held, and the specific dates and methods of transactions. This falls under the 'Major Shareholding Notification' category.
2026-02-09 Korean
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). This is a standard regulatory filing in South Korea (often referred to as an 'Insider Trading Report' or 'Director's Dealing' report) where executives or major shareholders disclose their holdings or changes in holdings of the company's securities. This aligns perfectly with the 'Director's Dealing' (DIRS) category.
2026-02-05 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 1% 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. It details the sale of shares by an executive (Lee Jong-jin) of PSK Inc. This type of filing is specifically categorized as a 'Director's Dealing' (DIRS) as it reports personal share transactions by company insiders.
2026-02-05 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 1% confidence The document is a 'Report on Ownership of Specific Securities by Executives and Major Shareholders' (임원ㆍ주요주주 특정증권등 소유상황보고서) filed with the Financial Supervisory Service (증권선물위원회) and the Korea Exchange. This is a standard regulatory filing in South Korea used to disclose insider shareholdings and changes in ownership by directors or major shareholders. Based on the provided definitions, this falls under 'Director's Dealing' (DIRS) as it reports personal share ownership and changes by a company director (상무이사).
2026-02-05 Korean
주식등의대량보유상황보고서(일반)
Major Shareholding Notification Classification · 1% confidence The document is a '주식등의 대량보유상황보고서' (Report on Large Shareholding of Stocks, etc.), which is a standard regulatory filing in South Korea under the Capital Markets Act. It details changes in share ownership by major shareholders and special related parties (directors/executives) due to market transactions and changes in employment status. This falls under the 'Major Shareholding Notification' category.
2026-02-04 Korean

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