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PSK INC. — Investor Relations & Filings

Ticker · 319660 ISIN · KR7319660007 KO Manufacturing
Open in API
Filings indexed 203 across all filing types
Latest filing 2026-05-14 Major Shareholding Noti…
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
주식등의대량보유상황보고서(일반)
Major Shareholding Notification Classification · 95% confidence The document is a Korean "주식등의 대량보유상황보고서," i.e. a large shareholding status report filed under the Capital Markets Act, detailing changes in major share ownership (threshold crossings) by PSK Holdings Inc. This matches our definition for Major Shareholding Notification (Code: MRQ).
2026-05-14 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 99% confidence The document is a Korean insider share ownership report (“임원ㆍ주요주주 특정증권등 소유상황보고서”) filed by an officer (임원) disclosing his holdings and transactions in the company’s securities. This matches the definition of Director’s Dealing (insider transactions by company directors/executives).
2026-05-13 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 95% confidence The document is a Korean ‘임원ㆍ주요주주 특정증권등 소유상황보고서,’ detailing an executive’s (director’s) personal shareholdings and recent transactions (purchases and sales of shares). This is a direct insider transaction report by an officer. According to the definitions, this matches the “Director’s Dealing” category (DIRS).
2026-05-13 Korean
기업설명회(IR)개최
Investor Presentation Classification · 77% confidence The document is a notice describing the scheduling, location, participants, and content overview of a corporate investor relations meeting (IR presentation). It is not financial results or a report itself, but an announcement and agenda for an investor presentation. This matches the Investor Presentation (IP) category.
2026-05-11 Korean
주식등의대량보유상황보고서(약식)
Regulatory Filings
2026-05-04 Korean
기업가치제고계획(자율공시) (2025년 이행현황)
Regulatory Filings
2026-04-30 Korean

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