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Sai MicroElectronics Inc. — Investor Relations & Filings

Ticker · 300456 ISIN · CNE100001ZL7 Shenzhen Stock Exchange Manufacturing
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Filings indexed 2,528 across all filing types
Latest filing 2026-05-21 Major Shareholding Noti…
Country CN China
Listing Shenzhen Stock Exchange 300456

About Sai MicroElectronics Inc.

https://www.smeiic.com

Sai MicroElectronics Inc. is a global pure-play MEMS (Micro-Electro-Mechanical Systems) foundry service provider. The company specializes in the development and high-volume manufacturing of diverse MEMS devices, including sensors, actuators, and micro-structures. Its core technical capabilities include advanced process technologies such as Through-Silicon Via (TSV), wafer bonding, and deep reactive-ion etching. Sai MicroElectronics serves a broad range of end-markets, including automotive, telecommunications, industrial, medical, and consumer electronics. The company operates advanced fabrication facilities that support the full lifecycle of product development, from initial prototyping to large-scale mass production. It focuses on providing customized process solutions and high-precision micro-system integration to meet the specific requirements of global technology clients.

Recent filings

Filing Released Lang Actions
股东询价转让结果报告书暨持股5%以上股东权益变动触及1%整数倍的提示性公告
Major Shareholding Notification Classification · 92% confidence The document is a public announcement by Beijing Saiwei Electronics Co., Ltd. disclosing that a >5% shareholder (and Chairman) has reduced his holding by 3.42%, triggering the required disclosure of an equity change that touches a 1% integer multiple. It details share counts before/after, transfer method, price, lock‐up, and intermediary opinions – exactly matching a “Major Shareholding Notification” under MRQ. There is no new share issuance, board change, or earnings content, and it’s not merely an announcement of an attached report. Hence it fits MRQ.
2026-05-21 Chinese
中信证券股份有限公司关于公司股东向特定机构投资者询价转让股份的核查报告
Regulatory Filings Classification · 85% confidence The document is a detailed “核查报告” (verification/compliance report) prepared by the sponsoring broker (Citic Securities) to Shenzhen Stock Exchange regarding a shareholder’s block transfer of pre-IPO shares by inquiry pricing. It contains no standalone financial statements or earnings information, nor is it a management/board change, proxy, or official Annual/Quarterly Report. It is a regulatory compliance submission—verifying legality and fairness under exchange guidelines—so it falls under the general Regulatory Filings category (RNS), which captures compliance documents and miscellaneous regulatory announcements.
2026-05-21 Chinese
关于控股股东进行股票质押式回购交易及部分股票质押提前购回的公告
Regulatory Filings Classification · 15% confidence The document is an announcement by Beijing Saiwei Electronics Co., Ltd. regarding its controlling shareholder’s stock pledge and partial pledge early repayment. It details pledged share quantities, release of pledge, freezing status, and related risks. This is neither a financial report (10-K, IR, ER, etc.) nor an AGM or proxy statement. It is not an insider trading sale/purchase but a pledge of shares by a director. It does not relate to dividend, delisting, M&A, or capital issuance, and is not a presentation or call transcript. No specific category covers share pledges by controlling shareholders, so it falls under the general “Regulatory Filings” fallback category.
2026-05-20 Chinese
关于控股股东进行股票质押式回购交易及部分股票质押提前购回的公告
Director's Dealing Classification · 75% confidence The document is an announcement by Beijing Saiwei Electronics regarding the controlling shareholder and chairman Yang Yunchun pledging and early repurchase of his personal shareholdings. This is a personal share transaction by an executive rather than a corporate financial report, dividend notice, or company share buyback. Under our taxonomy, this falls under Director’s Dealing (insider share transactions).
2026-05-18 Chinese
股东询价转让定价情况提示性公告
Regulatory Filings Classification · 70% confidence The document is a regulatory announcement regarding a shareholder’s off‐market block trade pricing and related risks, but it does not contain financial statements, dividend details, nor is it a report of the company buying back shares. It is not a threshold‐crossing shareholding notification, nor a director’s personal trade report. There is no indication of a new share issue or capital restructuring. It is a required market disclosure under exchange rules, so it falls into the fallback category of a general regulatory filing (RNS).
2026-05-11 Chinese
关于为子公司提供担保的进展公告
Regulatory Filings Classification · 81% confidence The document is a regulatory announcement by a listed Chinese company (北京赛微电子股份有限公司) regarding the progress of providing a guarantee for a subsidiary’s bank loan. It contains no financial statements or substantive financial analysis, nor is it a board management change, capital issuance, or earnings release. It is a compliance update filed pursuant to exchange rules about off-balance sheet guarantees. Therefore, it falls under the general “Regulatory Filings” category (RNS).
2026-05-11 Chinese

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