Group 1 - The company Jiangsu DiAo Microelectronics Co., Ltd. announced a share repurchase plan using a centralized bidding method [1] - The board approved a repurchase proposal on December 2, 2024, intending to use 100 to 200 million yuan of its own funds and special loans for the repurchase [1] - The repurchase price will not exceed 41.68 yuan per share, with a duration of 12 months from the board's approval [1] Group 2 - As of August 31, 2025, the company has repurchased a total of 5.8994 million shares, accounting for 2.38% of the total share capital [1] - The total funds paid for the repurchase amounted to 118 million yuan (excluding transaction fees) [1] - The repurchase price ranged from 16.96 to 26.22 yuan per share [1]

Group 1 - The company is holding a shareholders' meeting to ensure the rights of all shareholders and maintain order during the meeting [1][2] - Shareholders must arrive 30 minutes before the meeting to complete registration and present necessary identification documents [1][2] - Only shareholders, their representatives, and authorized personnel are allowed to enter the meeting venue, ensuring the meeting's seriousness and order [3] Group 2 - The meeting will include a proposal to cancel the supervisory board and amend the company's articles of association, with the supervisory board's functions being transferred to the audit committee of the board [5][6] - The company aims to improve its governance structure and operational standards by revising certain governance systems in accordance with relevant laws and regulations [6][7] - The meeting agenda includes the announcement of attendance, discussion of proposals, and voting procedures [7]

Group 1 - The company, Jiangsu Diao Microelectronics Co., Ltd., will participate in a collective performance briefing for the semiconductor design industry on September 8, 2025, from 15:00 to 17:00 [1][2] - The briefing will be conducted in an online text interaction format, hosted on the Shanghai Stock Exchange Roadshow Center [2][3] - Investors can submit questions for the briefing from September 1 to September 5, 2025, by accessing the "Pre-collection of Questions" section on the Roadshow Center website or via the company's email [1][2] Group 2 - Key participants in the briefing will include the Chairman and General Manager, Mr. Ju Jianhong, the Board Secretary and Deputy General Manager, Ms. Chen Yue, and the Chief Financial Officer, Ms. Cheng Xiaoming [3] - After the briefing, investors can view the session and its main content on the Shanghai Stock Exchange Roadshow Center [3]

江苏帝奥微电子股份有限公司 关于参加2025年半年度科创板芯片设计行业 集体业绩说明会的公告 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。 重要内容提示： 会议线上交流时间：2025年9月8日(星期一) 下午15:00-17:00 登录新浪财经APP 搜索【信披】查看更多考评等级 证券代码：688381 证券简称：帝奥微 公告编号：2025-047 会议召开方式：线上文字互动 线上文字互动平台：上海证券交易所上证路演中心（http://roadshow.sseinfo.com/） 投资者可于2025年9月1日（星期一）至9月5日（星期五）16:00前登录上证路演中心网站首页点击"提问 预征集"栏目或通过公司邮箱stock@dioo.com进行提问。公司将在说明会上对投资者普遍关注的问题进 行回答。 江苏帝奥微电子股份有限公司（以下简称"公司"）已于2025年8月23日发布公司2025年半年度报告，为 便于广大投资者更全面深入地了解公司2025年半年度经营成果、财务状况、发展理念，公司参与了由上 海证券交易所主办的2025 ...

证券代码：688381 证券简称：帝奥微 江苏帝奥微电子股份有限公司 2025 年第三次临时股东会会议资料 2025 年 9 月·上海 1 为维护全体股东的合法权益，确保本次股东会的正常秩序和议事效率，保证 大会的顺利召开，根据《公司法》、《上市公司股东会规则》、《公司章程》和公司 《股东会议事规则》等规定，特制定会议须知如下： 一、为确认出席大会的股东或其代理人或其他出席者的出席资格，会议工作 人员将对出席会议者的身份进行必要的核对工作，请被核对者给予配合。 二、请出席大会的股东或其代理人或其他出席者在会议召开前 30 分钟到达 会场办理签到手续，并请按规定出示证券账户卡、身份证、法定代表人/执行事 务合伙人委派代表身份证明书、营业执照复印件（加盖公章）、授权委托书等证 明文件，经验证后方可出席会议。为保证本次大会的严肃性和正常秩序，切实维 护股东的合法权益，务必请出席大会的股东或其代理人或其他出席者准时到达会 场签到确认参会资格，在会议主持人宣布现场出席会议的股东和代理人人数及所 持有的表决权数量之前，会议登记应当终止。在此之后进场的股东或股东代理人 无权参与现场投票表决。 三、出席会议的股东依法享有发言 ...

证券代码：688381 证券简称：帝奥微 公告编号：2025-047 江苏帝奥微电子股份有限公司 关于参加 2025 年半年度科创板芯片设计行业集体业 绩说明会的公告 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。 重要内容提示： 线 上 文 字 互 动 平 台 ： 上 海 证 券 交 易 所 上 证 路 演 中 心 （http://roadshow.sseinfo.com/） 投资者可于 2025 年 9 月 1 日（星期一）至 9 月 5 日（星期五）16:00 前登录上证路演中心网站首页点击"提问预征集"栏目或通过公司邮箱 stock@dioo.com 进行提问。公司将在说明会上对投资者普遍关注的问题进行回 答。 江苏帝奥微电子股份有限公司（以下简称"公司"）已于 2025 年 8 月 23 日 发布公司 2025 年半年度报告，为便于广大投资者更全面深入地了解公司 2025 年半年度经营成果、财务状况、发展理念，公司参与了由上海证券交易所主办的 2025 年半年度科创板芯片设计行业集体业绩说明会，此次活动将采用网络 ...

Core Viewpoint - DiAo Micro (688381.SH) is currently experiencing a decline in stock price, with a closing price of 27.21 yuan and a drop of 4.29%, indicating it is in a state of underperformance since its IPO [1] Group 1: IPO and Financials - DiAo Micro was listed on the Shanghai Stock Exchange's Sci-Tech Innovation Board on August 23, 2022, with an initial public offering of 63.05 million shares at a price of 41.68 yuan per share [1] - The stock reached a peak price of 55.50 yuan on its first trading day but has since experienced a downward trend [1] - The total amount raised from the IPO was 262.79 million yuan, with a net amount of 241.56 million yuan after deducting issuance costs, exceeding the original fundraising plan by 91.56 million yuan [1] - The company intended to use the raised funds for product upgrades, R&D center construction, and working capital [1] Group 2: Underwriting and Investment - The lead underwriter for DiAo Micro's IPO was CITIC Securities Co., Ltd., with a total underwriting fee of 18.08 million yuan [1] - CITIC Securities' subsidiary, CITIC Investment Co., Ltd., participated in the offering with a co-investment of 3% of the total shares issued, amounting to 189.15 thousand shares and an allocation of 7.88 million yuan [2] - The lock-up period for the shares allocated to CITIC Investment is set for 24 months from the date of listing [2]

Core Points - The stock of DiAo Micro (688381.SH) closed at 27.21 yuan, with a decline of 4.29%, currently in a state of breaking issue [1] - DiAo Micro was listed on the Shanghai Stock Exchange's Sci-Tech Innovation Board on August 23, 2022, with an initial public offering of 63.05 million shares at a price of 41.68 yuan per share [1] - The stock reached a high of 55.50 yuan on its first trading day but has since experienced a downward trend [1] Fundraising and Financials - DiAo Micro raised a total of 262.79 million yuan through its initial public offering, with a net amount of 241.56 million yuan after deducting issuance costs [1] - The net fundraising amount exceeded the original plan by 91.56 million yuan, with the company initially aiming to raise 150 million yuan for various projects including chip product upgrades and the establishment of research centers [1] - The total issuance costs amounted to 21.23 million yuan, with the lead underwriters, CITIC Securities and Pacific Securities, receiving 18.08 million yuan in underwriting fees [1] Investment Participation - CITIC Investment, a subsidiary of the lead underwriter, participated in the offering with a stake of 3%, acquiring 1.89 million shares for an amount of 78.84 million yuan, subject to a 24-month lock-up period [2]

Core Insights - The company reported a total revenue of 306 million yuan for the first half of 2025, an increase of 40.19 million yuan compared to the same period last year, marking a year-on-year growth of 15.11% [1] - The net profit attributable to shareholders was -4.21 million yuan, indicating a loss [1] - The net cash inflow from operating activities was -17.77 million yuan, which is an improvement of 13.11 million yuan compared to the same period last year [1] Financial Metrics - The latest debt-to-asset ratio stands at 6.95% [3] - The gross profit margin is reported at 45.49% [3] - The return on equity (ROE) is -0.16% [3] - The diluted earnings per share (EPS) is -0.02 yuan [3] - The total asset turnover ratio is 0.11 times, which is an increase of 0.02 times year-on-year, reflecting a growth of 23.48% [3] - The inventory turnover ratio is 1.05 times [3] Shareholder Information - The number of shareholders is 15,600, with the top ten shareholders holding a total of 119 million shares, accounting for 48.11% of the total share capital [3] - The top shareholders and their respective holdings are as follows: - Ju Jianhong: 19.5% - Beijing Woyan Capital Management Center (Limited Partnership) - Shanghai Woyan Venture Capital Partnership (Limited Partnership): 4.98% - Guotai Integrated Circuit Development Co., Ltd.: 4.97% - Jiangsu Runyou Investment Group Co., Ltd.: 4.85% - Hubei Xiaomi Changjiang Industrial Investment Fund Management Co., Ltd. - Hubei Xiaomi Changjiang Industrial Fund Partnership (Limited Partnership): 4.86% - Gu Ningzhong: 2.59% - Zheng Hui: 1.86% - Nantong Antai Real Estate Development Co., Ltd.: 1.55% - Roger Zhang: 1.53% - Shanghai Xinxin Integrated Circuit Technology Center (Limited Partnership): 1.33% [3]

Summary of Key Points Core Viewpoint - On August 25, a total of 6 listed companies experienced the lifting of restrictions on their shares, with a total market value of approximately 3.883 billion yuan being unlocked [1]. Group 1: Companies and Share Unlocking Details - Zhongke Jincai (Stock Code: 002657) had 1.2562 million shares released from equity incentive restrictions [1]. - Oupokangshi (Stock Code: 300595) had 525,300 shares released from equity incentive restrictions [1]. - United Chemical (Stock Code: 301209) had 55.5 million shares released from pre-issue restrictions [1]. - Xuantai Pharmaceutical (Stock Code: 688247) had 31.1 million shares released [1]. - Diaowe (Stock Code: 688381) had 800,000 shares released [1]. - Tailin Micro (Stock Code: 688591) had 240,000 shares released [1].