简式权益变动报告书 上市公司名称：青岛鼎信通讯股份有限公司 青岛鼎信通讯股份有限公司 住所及地址：哈尔滨市香坊区和平路****** 股权变动性质：股份减少 签署日期：2026 年 3 月 16 日 股票上市地点：上海证券交易所 1 / 14 信息披露义务人声明 一、本报告书系依据《中华人民共和国证券法》、《上市公司收购管理办法》、 《公开发行证券的公司信息披露内容与格式准则第 15 号―权益变动报告书》及 相关法律、法规和规范性文件编写。 股票简称：鼎信通讯 股票代码：603421 信息披露义务人：王天宇 二、信息披露义务人签署本报告书已获得必要的授权和批准，其履行亦不违 反信息披露义务人章程或内部规则中的任何条款，或与之相冲突。 三、依据《中华人民共和国证券法》《上市公司收购管理办法》的规定，本 报告书已全面披露信息披露义务人在青岛鼎信通讯股份有限公司（以下简称"鼎 信通讯"）中拥有权益的股份变动情况。 四、截至本报告书签署日，除本报告书披露的信息外，信息披露义务人没有 通过任何其他方式增加或减少其在鼎信通讯中拥有权益的股份。 五、本次权益变动是根据本报告所载明的资料进行的。除本信息披露义务人 外，没有委托 ...

证券代码：603421 证券简称：鼎信通讯 公告编号：2026-010 青岛鼎信通讯股份有限公司 关于持股 5%以上股东权益变动触及 5%刻度的提示性公告 投资者王天宇保证向本公司提供的信息真实、准确、完整，没有虚假记载、误导 性陈述或重大遗漏。 本公司董事会及全体董事保证公告内容与信息披露义务人提供的信息一致。 1.身份类别 | | □控股股东/实际控制人及其一致行动人 | | --- | --- | | 投资者及其一致行 | √其他 5%以上大股东及其一致行动人 | | | □合并口径第一大股东及其一致行动人（仅适用于无控股 | | 动人的身份 | | | | 股东、实际控制人） | | | □其他______________（请注明） | 2.信息披露义务人信息 重要内容提示： | 权益变动方向 | 比例增加□ | 比例减少√ | | --- | --- | --- | | 权益变动前合计比例 | 5.94% | | | 权益变动后合计比例 | 5.00% | | | 本次变动是否违反已作出的承诺、意向、计划 | 是□ | 否√ | | 是否触发强制要约收购义务 | 是□ | 否√ | 注：本次权益变动 ...

Core Viewpoint - The article emphasizes the increasing focus on investor rights protection in the capital market, particularly with the implementation of new regulations and heightened scrutiny on information disclosure violations [1][2]. Regulatory Environment - Regulatory authorities have maintained a strict stance against various forms of misconduct, including financial fraud and improper guarantees, with a "zero tolerance" approach [2]. - Since 2026, the China Securities Regulatory Commission (CSRC) has issued nearly 40 notices and administrative penalties related to information disclosure violations, targeting not only listed companies but also their major stakeholders [1][2]. Investor Rights Mechanism - The introduction of representative litigation has become more common, significantly lowering the barriers for investors to pursue claims [2]. - Courts are exploring new methods for dispute resolution, such as "demonstration judgments" and diversified mediation, which enhance the efficiency of case handling [2]. Compensation Opportunities - Several stocks, including Xiangrikui (300111), Yingjixin (688209), and Shuangliang Energy (600481), have entered the compensation channels for investors [2]. - A list of companies with potential compensation claims has been provided, detailing the expected compensation periods for investors who bought shares within specified dates [4][5][6][7].

重要内容提示： 青岛鼎信通讯股份有限公司（以下简称"公司"）股票于 2026 年 3 月 9 日、3 月 10 日及 3 月 11 日连续三个交易日内收盘价格涨幅偏离值累计超过 20%， 根据《上海证券交易所交易规则》的有关规定，属于股票交易异常波动情形。 经公司自查并向控股股东、实际控制人书面发函确认，截至本公告披露 日，公司控股股东、实际控制人不存在应披露而未披露的重大事项。 公司已于 2026 年 1 月 20 日披露了《鼎信通讯 2025 年度业绩预亏公告》。 经财务部门初步测算，预计 2025 年度归属于上市公司股东的净利润为-54,000 万元至-64,000 万元，具体准确的数据以公司正式披露的经审计后的 2025 年年 度报告为准。公司敬请广大投资者注意二级市场交易风险，理性决策，审慎投资。 一、股票交易异常波动的具体情况 证券代码：603421 证券简称：鼎信通讯 公告编号：2026-009 青岛鼎信通讯股份有限公司 关于股票交易异常波动的公告 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、准确性和完整性承担法律责任。 （一）生产经营情 ...

Core Viewpoint - Qingdao Dingshin Communication Co., Ltd. announced the resignation of independent director Mr. Tian Kunru due to personal reasons, which will not affect the company's operations or governance [2][3]. Group 1: Resignation Details - Mr. Tian Kunru submitted his resignation letter, stepping down from his roles as independent director, chairman of the audit committee, and member of the remuneration and assessment committee [2]. - After his resignation, Mr. Tian will no longer hold any position within the company [2]. Group 2: Impact on the Company - There were no disagreements between Mr. Tian and the company or board during his tenure, and his resignation does not raise any issues that need to be brought to the attention of shareholders and creditors [3]. - Mr. Tian's resignation will lead to a non-compliance situation regarding the proportion of independent directors on the board and its committees, as well as a lack of accounting professionals in the audit committee [3]. - The company will promptly complete the election of a new independent director and related committee members in accordance with relevant laws and regulations [3]. Group 3: Acknowledgment of Contributions - The board expressed gratitude for Mr. Tian's diligent service and significant contributions to the company's governance and development during his tenure [4].

青岛鼎信通讯股份有限公司（以下简称"公司"）董事会近日收到独立董事 田昆如先生递交的书面辞呈。田昆如先生因个人原因，申请辞去公司第五届董事 会独立董事、审计委员会主任委员、薪酬与考核委员会委员职务。辞去上述职务 后，田昆如先生不再担任公司任何职务。 一、董事/高级管理人员离任情况 | | | | | | 是否继续 | | | 是否存 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | 原定任 | | 在上市公 | 具 | 体 | 在未履 | | 姓名 | 离任职务 | 离任时间 | 期到期 | 离任 | 司及其控 | 职 | 务 | 行完毕 | | | | | | 原因 | | （ | 如 | | | | | | 日 | | 股子公司 | 适用） | | 的公开 | | | | | | | 任职 | | | 承诺 | | | 独立董事、审计 | 公司股东会 | | | | | | | | 田昆 | 委员会主任委 | 选举产生新 | 2027 年 7 | 个人 | | 不适 | | | | | | | | | 否 | | | 否 | ...

Core Viewpoint - The company announced the resignation of independent director Tian Kunru from its board due to personal reasons, effective immediately [1] Group 1 - Tian Kunru has submitted a written resignation from his positions as independent director, chairman of the audit committee, and member of the compensation and assessment committee [1] - Following his resignation, Tian Kunru will no longer hold any position within the company [1]

Group 1 - The core point of the article is that Dingxin Communications reported a total of 28,666 shareholders as of the market close on February 13, 2026 [2]

Group 1 - The core point of the article is that Dingxin Communication (603421) reported a total of 28,666 shareholders as of the market close on February 20, 2026 [1]

Group 1 - The core viewpoint of the article is that Dingxin Communication (603421) is currently undergoing a process to restore its business operations after being suspended by the State Grid during a blackout period from February 23, 2024, to February 22, 2026 [1] Group 2 - The company has indicated that there is no clear conclusion regarding the restoration of its business at this time [1] - The application process for resuming operations is ongoing [1]