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SUZHOU ORIENTAL SEMICONDUCTOR COMPANY LIMITED — Investor Relations & Filings

Ticker · 688261 ISIN · CNE100005XX8 Shanghai Stock Exchange Manufacturing
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Filings indexed 426 across all filing types
Latest filing 2026-05-24 Director's Dealing
Country CN China
Listing Shanghai Stock Exchange 688261

About SUZHOU ORIENTAL SEMICONDUCTOR COMPANY LIMITED

https://www.orientalsemi.com/en/

Suzhou Oriental Semiconductor Company Limited specializes in the research, development, and design of high-performance power semiconductor devices. The company’s core product portfolio includes high-voltage super-junction MOSFETs, marketed under the GreenMOS brand, shielded gate transistor (SGT) MOSFETs, and Insulated Gate Bipolar Transistors (IGBT). Additionally, the firm develops wide-bandgap solutions such as Silicon Carbide (SiC) diodes and MOSFETs. These products are engineered to optimize energy efficiency and power density across various applications, including switch-mode power supplies, electric vehicle charging infrastructure, motor control systems, and consumer electronics. By leveraging proprietary technology and independent intellectual property, the company provides advanced power management solutions aimed at industrial and commercial sectors requiring high-reliability power conversion.

Recent filings

Filing Released Lang Actions
苏州东微半导体股份有限公司股东减持股份计划公告
Director's Dealing Classification · 80% confidence The document is a formal public announcement by a major shareholder (through a limited partner entity) of its planned reduction in shareholding via block trades, including detailed tables of share quantities, dates, lock-up commitments, and regulatory references. This is not an annual or interim report, nor is it a dividend or M&A notice. It is not the company buying treasury shares, but a disclosure of insider/shareholder share sales. Therefore it best fits the “Director's Dealing” category, which covers reports of personal share transactions by company insiders or related major shareholders.
2026-05-24 Chinese
浙江天册律师事务所关于苏州东微半导体股份有限公司2025年年度股东会的法律意见书
Declaration of Voting Results & Voting Rights Announcements Classification · 82% confidence The document is a legal opinion letter from Zhejiang TianCe Law Firm regarding the 2025 Annual General Meeting (AGM) of Suzhou Dongwei Semiconductor Co., Ltd. It details the convening procedures, attendance, voting methods, and provides the full vote tally for each resolution. Although it is drafted by a law firm, its primary content is the official voting results of an AGM. Under our taxonomy, announcements or documents that present the official results of shareholder votes at a general meeting belong in category “Declaration of Voting Results & Voting Rights Announcements” (DVA).
2026-05-20 Chinese
苏州东微半导体股份有限公司2025年年度股东会决议公告
Declaration of Voting Results & Voting Rights Announcements Classification · 95% confidence The document is an announcement of the resolutions and detailed voting results of the 2025 Annual General Meeting of Suzhou Dongwei Semiconductor Co., Ltd., including vote counts for each proposal, attendance, and legal attestations. It is not a shareholder meeting invitation or the full annual report but specifically discloses the official voting outcomes of the AGM. This aligns precisely with the “Declaration of Voting Results & Voting Rights Announcements” category (Code: DVA).
2026-05-20 Chinese
苏州东微半导体股份有限公司2025年年度股东会会议资料
AGM Information Classification · 95% confidence The document is titled “2025年年度股东会会议资料” and contains the full set of materials for the 2025 Annual General Meeting (AGM) of Suzhou Oriental Semiconductor Co., Ltd., including meeting guidelines, agenda, proposed resolutions, and related attachments. It is clearly a compilation of materials to be presented and reviewed at the AGM, rather than an announcement of a report or the full annual report itself. This matches the definition of AGM Information (Code: AGM-R).
2026-05-14 Chinese
中国国际金融股份有限公司关于苏州东微半导体股份有限公司首次公开发行股票并在科创板上市的持续督导保荐总结报告书
Regulatory Filings Classification · 78% confidence The document is a detailed continuous supervision summary report (‘持续督导保荐总结报告书’) prepared by the IPO sponsor under China’s securities regulations, outlining sponsorship duties, compliance reviews, use of proceeds, and regulatory commitments. It is not a financial report (10-K, IR), not a simple publication notice (RPA), nor an announcement of voting or board changes. It is a regulatory‐compliance filing that doesn’t fit other specific categories, so it falls under the fallback “Regulatory Filings” category.
2026-05-14 Chinese
苏州东微半导体股份有限公司关于购买深圳慧能泰半导体科技有限公司部分股权的进展公告
M&A Activity Classification · 85% confidence The document is a corporate announcement detailing the progress of an equity acquisition transaction whereby the company will purchase a 53.0921% stake in Shenzhen Huinengtai Semiconductor Technology Co., Ltd. This constitutes an M&A transaction announcement (acquisition of control, listing it as a subsidiary). It is not merely a report publication, interim financial report, or regulatory certification, but an update on a merger and acquisition activity. Therefore, it falls under M&A Activity (Code: TAR).
2026-05-13 Chinese

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