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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 2026-05-04 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
주식등의대량보유상황보고서(약식)
Regulatory Filings
2026-05-04 Korean
기업가치제고계획(자율공시) (2025년 이행현황)
Regulatory Filings
2026-04-30 Korean
주식등의대량보유상황보고서(약식)
Major Shareholding Notification Classification · 1% confidence The document is a ‘주식등의 대량보유상황보고서(약식)’ – a statutory report of large shareholdings under Korea’s Capital Markets Act. It details changes in share counts and ownership percentages (from 4.93% to 5.30%), matching a notification of significant share ownership changes. This corresponds to Major Shareholding Notification.
2026-04-01 Korean
정기주주총회결과
Declaration of Voting Results & Voting Rights Announcements Classification · 1% confidence The document text is clearly the official results of the company’s regular shareholders’ meeting (정기주주총회결과) held on 2026-03-30, detailing agenda items, vote outcomes, approval percentages, and associated resolutions. This matches the definition of “Declaration of Voting Results & Voting Rights Announcements,” not the meeting notice or the full annual report. Therefore, the correct classification is DVA.
2026-03-30 Korean
기업가치제고계획(자율공시)
Regulatory Filings Classification · 1% confidence The document is a voluntary disclosure (‘자율공시’) of a corporate value enhancement plan by PSK, detailing company overview, market diagnosis, targets (CAGR, margins, dividends, ESG), and communication plans. It is not an AGM presentation, earnings release, dividend notice, or any other predefined category; rather it is a miscellaneous regulatory announcement of future-oriented strategic plans. Therefore it falls under the general Regulatory Filings category (RNS).
2026-03-30 Korean
대표이사변경
Board/Management Information Classification · 1% confidence The document is an official announcement of changes in the company’s representative director (CEO) positions, including details of outgoing and incoming directors, board resolution date, and biographical and shareholding information of the new appointees. This clearly falls under Board/Management Information.
2026-03-30 Korean

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