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QUALITAS SEMICONDUCTOR CO., LTD. — Investor Relations & Filings

Ticker · 432720 ISIN · KR7432720001 KO Manufacturing
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Filings indexed 153 across all filing types
Latest filing 2026-05-15 Interim / Quarterly Rep…
Country KR South Korea
Listing KO 432720

About QUALITAS SEMICONDUCTOR CO., LTD.

https://www.q-semi.com/

Qualitas Semiconductor is a fabless semiconductor company specializing in the design and licensing of high-speed interconnect IP (Intellectual Property). The company provides a portfolio of silicon-proven Physical Layer (PHY) and controller IP for various industry standards, including SERDES, PCI Express (up to Gen6), UCIe for chiplet integration, MIPI, USB, and Ethernet. Focusing on analog and mixed-signal design for advanced process nodes, its solutions are engineered for low-power consumption and high performance. The IP is integrated into System-on-Chips (SoCs) for demanding applications such as artificial intelligence (AI), high-performance computing (HPC), data centers, and automotive systems. The company also holds ISO 26262 certification for automotive functional safety.

Recent filings

Filing Released Lang Actions
분기보고서 (2026.03)
Interim / Quarterly Report Classification · 98% confidence The document is a Korean-language 분기보고서 (quarterly report) covering the period January 1, 2026 to March 31, 2026. It contains detailed sections on business overview, product lines, revenue breakdowns by product and geography, risk management, derivative transactions, and other substantive financial disclosures consistent with a comprehensive interim/quarterly financial report. Therefore, it should be classified as an Interim / Quarterly Report. Q1 2026
2026-05-15 Korean
주식등의대량보유상황보고서(일반)
Major Shareholding Notification Classification · 100% confidence The document is titled '주식등의 대량보유상황보고서(일반)' which translates to 'Report on Large Shareholding Status (General)'. It contains detailed information about shareholdings, changes in share ownership, and related disclosures for a company named 퀄리타스반도체. The document includes data on share quantities, ownership percentages, changes due to trading, and legal references to capital market laws. There is no indication that this is an announcement of a report publication or a certification. The content is a detailed notification of changes in major shareholdings, consistent with filings required when significant share ownership thresholds are crossed or large shareholding changes occur. This matches the definition of 'Major Shareholding Notification' (Code: MRQ).
2026-05-08 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 100% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' which translates to 'Report on Ownership Status of Specific Securities by Executives and Major Shareholders.' It includes detailed information about share ownership changes by an executive or major shareholder, including dates, share quantities, ownership percentages, and transaction details. The document is addressed to regulatory bodies such as the Securities and Futures Commission and the Korea Exchange, indicating it is a formal disclosure of insider holdings. This matches the definition of 'Director's Dealing' filings, which report personal share transactions by company directors and executives (insider trades). The document length is 2549 characters, which is consistent with a detailed insider transaction report rather than a full financial report or announcement. Therefore, the correct classification is DIRS (Director's Dealing).
2026-05-08 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 100% confidence The document is titled '임원ㆍ주요주주 특정증권등 소유상황보고서' which translates to 'Report on Ownership Status of Specific Securities by Executives and Major Shareholders.' It contains detailed information about the ownership changes of securities by an executive named 최광천, including dates, share quantities, ownership percentages, and transaction details. The document is addressed to regulatory bodies such as the Securities and Futures Commission and the Korea Exchange. This type of filing corresponds to a notification of insider share transactions by company directors or executives, which matches the definition of 'Director's Dealing' (DIRS). The document length is 2595 characters, and it contains substantive data about share ownership changes, not just an announcement or certification. Therefore, the correct classification is DIRS with high confidence.
2026-05-08 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 95% confidence The document is a Korean-language filing titled “임원ㆍ주요주주 특정증권등 소유상황보고서,” which is a statutory report by an officer (director/executive) disclosing changes in personal share ownership and specific securities. It is submitted to the Financial Services Commission and the Korea Exchange, detailing the number of shares before and after transactions, acquisition dates, and other insider transaction details. This matches a Director’s Dealing report.
2026-04-23 Korean
임원ㆍ주요주주특정증권등소유상황보고서
Director's Dealing Classification · 90% confidence The document is a statutory insider shareholding report (“임원ㆍ주요주주 특정증권등 소유상황보고서”) filed by an executive disclosing changes in his ownership of the company’s shares and specific securities, referencing reporting obligations to the Securities and Futures Commission and Korea Exchange. This matches the definition of a Director's Dealing (insider transaction) report rather than a financial statement or generic regulatory announcement.
2026-04-23 Korean

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