希荻微电子集团股份有限公司 关于原实际控制人股份继承过户的进展公告 证券代码：688173 证券简称：希荻微 公告编号：2025-102 鉴于股份继承过户登记手续所需的相关文件及所涉及的费用仍在准备和筹 措过程中，办理周期和程序比预期较长和繁杂，截至本公告披露之日，上述股份 继承过户尚未办理完成。公司将持续关注相关事项进展情况，并及时履行信息披 露义务。 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 希荻微电子集团股份有限公司（以下简称"公司"）原实际控制人之一戴祖 渝女士于 2025 年 5 月逝世，戴祖渝女士生前直接持有公司股份 93,790,457 股。 2025 年 8 月 25 日，经广东省深圳市先行公证处公证，上述股份全部由其长子暨 公司实际控制人之一 TAO HAI（陶海）先生继承。具体内容详见公司于 2025 年 8 月 26 日披露的《希荻微电子集团股份有限公司关于公司实际控制人变更暨股 东权益变动的提示性公告》（公告编号：2025-065）及《希荻微电子集团股份有 限公司详式权益变动报告书》。 202 ...

Core Viewpoint - The company has successfully applied its high-performance power management chip products in the two-wheeler market, indicating a strategic expansion into this sector [1] Group 1: Product Application - The company has shipped some chip products to brand customers in the traditional motorcycle sector [1] - In the electric two-wheeler sector, certain chip products have completed the Design In phase and are awaiting ramp-up for mass production [1] - The technical solutions are gradually being integrated into the product design and development of electric two-wheelers, supporting their intelligent and efficient development [1] Group 2: Market Strategy - The company will continue to monitor the development trends in the two-wheeler market and actively seize market opportunities [1] - There is an emphasis on promoting the company's products in more application areas within the two-wheeler market [1]

Core Viewpoint - The company has successfully mass-produced DC/DC chip products for DDR memory and UFS storage, which are widely used in mobile smart terminals such as smartphones and tablets, gaining market recognition for their efficiency and stable voltage regulation capabilities [1] Group 1 - The company has entered mass production of DC/DC chips for DDR memory and UFS storage [1] - The products are extensively applied in mobile smart terminals, including smartphones and tablets [1] - The company is actively engaged in the research and development of new products [1]

证券日报网讯 12月16日，希荻微在互动平台回答投资者提问时表示，2024年，公司累计回购股份 2184196股，支付资金总额约2719.45万元，详见公司公告（公告编号：2024-049）。公司将继续践 行"以投资者为本"的理念，持续关注并监控公司股价走势，若公司及高管存在股份回购或增持相关计 划，会严格按照相关法规和监管要求履行信息披露义务。 ...

证券日报网讯 12月8日，希荻微在互动平台回答投资者提问时表示，公司车规和工规模拟集成电路研发 项目的具体应用前景包括数据中心等。公司研发的大电流POL（PointofLoad，负载点）芯片产品和E- Fuses负载开关芯片产品可以为PC和服务器核心处理器供电以及保护系统免受输入瞬变、短路和电压尖 峰等危害，优化电力传输，提升系统可靠性。截至目前，公司已推出10-20A大电流POL芯片，该产品在 正与下游多家客户进行软硬件适配，部分信创客户已进入量产爬坡阶段，更大电流规格的芯片产品也正 在研发与调试过程中，有望为数据中心提供更强大的性能支持；欧美芯片厂商由于成立时间较久，在资 金实力、人才储备以及客户资源积累方面具备一定的先发优势，其所能提供的产品料号也更为丰富，然 而在车规芯片和工规芯片领域，国产化替代已是大势所趋，公司可以提供更贴近中国客户需求的产品规 划定义和技术支持。公司会保持差异化战略，深入了解市场动态，确保产品研发方向与市场需求高度契 合，同时科学统筹调配研发资源，提高研发效率，缩短研发周期，不断推出高效率、高精度、高可靠 性、高性价比的芯片产品，通过丰富产品矩阵和提供优质服务提升公司的竞争力。 ...

Group 1 - The semiconductor sector experienced a significant increase of 2.82% on December 8, with Saiwei Microelectronics leading the gains [1] - The Shanghai Composite Index closed at 3924.08, up 0.54%, while the Shenzhen Component Index closed at 13329.99, up 1.39% [1] - Notable gainers in the semiconductor sector included Saiwei Microelectronics, which rose by 18.82% to a closing price of 101.20, and Changguang Huaxin, which increased by 15.26% to 148.48 [1] Group 2 - The semiconductor sector saw a net inflow of 4.429 billion yuan from institutional funds, while retail investors experienced a net outflow of 2.247 billion yuan [2] - Major stocks that declined included Hangyu Micro, which fell by 2.63% to 17.00, and Hongwei Technology, which decreased by 1.97% to 27.41 [2] - The trading volume for the semiconductor sector was substantial, with Saiwei Microelectronics recording a trading volume of 475,000 shares and a transaction value of 460 million yuan [1][2]

Core Viewpoint - The company is focusing on the development of automotive-grade and industrial-scale integrated circuit projects, with specific applications in data centers [1] Group 1: Product Development - The company has developed high-current Point of Load (POL) chips and E-Fuses load switch chips, which are designed to power core processors in PCs and servers while protecting systems from input transients, short circuits, and voltage spikes [1] - Currently, the company has launched 10-20A high-current POL chips, which are undergoing hardware and software adaptation with several downstream customers [1] - Some customers in the trusted computing sector have entered the ramp-up phase of mass production, and larger current specifications for chip products are under development and testing [1] Group 2: Market Potential - The new chip products are expected to enhance power transmission and improve system reliability, providing stronger performance support for data centers [1]

Core Viewpoint - The major shareholder of Xidi Micro (希荻微) plans to reduce its stake in the company to meet its funding needs, which may impact the stock price but is not expected to affect the company's governance or ongoing operations significantly [1][2]. Group 1: Shareholder Reduction Plan - Chongqing Weichun Enterprise Management Consulting Co., Ltd. intends to reduce its holdings by up to 12,369,421 shares, representing no more than 3.00% of the total share capital, over a period of three months starting 15 trading days after the announcement [1]. - The reduction will occur through centralized bidding and block trading, with a maximum of 4,123,140 shares (1.00% of total shares) through centralized bidding and 8,246,281 shares (2.00% of total shares) through block trading [1]. - The selling price will be determined based on market conditions, and adjustments will be made if there are any corporate actions affecting share capital during the reduction period [1]. Group 2: Historical Shareholding and Reduction Impact - Chongqing Weichun initially held 37,878,100 shares, accounting for 9.23% of the total share capital, and has cumulatively reduced its holdings by 803,120 shares, realizing approximately 10.7 million yuan [2]. - The company went public on January 21, 2022, with an initial public offering (IPO) of 40.01 million shares at a price of 33.57 yuan per share, raising a total of 1.343 billion yuan [3][4]. - The stock price peaked at 51.88 yuan on the first trading day but has since experienced a decline, currently trading below the IPO price [3]. Group 3: Use of IPO Proceeds - The net proceeds from the IPO amounted to 1.221 billion yuan, exceeding the initial plan by 640 million yuan, which was intended for various projects including R&D for power management chips and working capital [4]. - The total issuance costs were 122 million yuan, with underwriting and sponsorship fees accounting for 102 million yuan [4].

Core Viewpoint - The company, Xidiwei, is facing ongoing financial challenges despite significant revenue growth, with major shareholders planning to reduce their stake in the company [1][4]. Group 1: Company Overview - Xidiwei is a leading domestic supplier of power management and signal chain chips, focusing on high-performance analog and mixed-signal chip development, design, and sales [3][6]. - The company has successfully developed a series of high-efficiency, high-precision, and high-reliability products, including DC/DC chips and super-fast charging chips, which have entered the supply chains of major brands like Xiaomi and OPPO [3][6]. Group 2: Financial Performance - Since its listing in 2022, Xidiwei has faced continuous pressure on its performance, with cumulative losses of 360 million yuan from 2022 to 2024, despite a pre-listing net profit of 26 million yuan in 2021 [3][6]. - For the first three quarters of 2025, the company reported revenue of 717 million yuan, a year-on-year increase of 107.81%, while the net profit attributable to shareholders was -76 million yuan, representing a 60.94% reduction in losses compared to the previous year [4][7]. - The company has managed to reduce sales expenses and improve operational efficiency, contributing to a narrowing of losses as the market environment stabilizes [4][7].

Core Viewpoint - The company, Xidiwei, is facing significant financial challenges post-IPO, with increasing losses despite revenue growth in recent quarters [5] Group 1: Shareholder Actions - A major shareholder, Chongqing Weichun Enterprise Management Consulting Co., Ltd., plans to reduce its stake in the company by up to 12.3694 million shares, representing no more than 3.00% of the total share capital [1] Group 2: Company Overview - Xidiwei is a leading domestic supplier of power management and signal chain chips, focusing on high-performance analog and mixed-signal chips, providing advanced solutions for clients [4] - The company has developed a range of efficient and reliable products, including DC/DC chips and super-fast charging chips, which have been integrated into the supply chains of major brands like Xiaomi and Audi [4] Group 3: Financial Performance - Since its IPO, the company has experienced continuous pressure on its performance, with cumulative losses of 360 million yuan from 2022 to 2024, despite a profit of 26 million yuan before going public in 2021 [5] - For the first three quarters of 2025, the company reported revenue of 717 million yuan, a year-on-year increase of 107.81%, while reducing losses by 60.94% compared to the previous year [5] - The improvement in financial performance is attributed to better expense management and operational efficiency, alongside a stabilization in market conditions that reduced inventory impairment risks [5]