Core Viewpoint - The announcement details the share buyback plan executed by Shanghai Tunnel Engineering Co., Ltd. (the "Company") and its controlling shareholder, Shanghai Urban Construction (Group) Co., Ltd. (the "Urban Construction Group") [2][6]. Group 1: Buyback Plan Details - The Urban Construction Group plans to increase its stake in the Company using its own or self-raised funds through methods permitted by the Shanghai Stock Exchange, with a total investment cap of RMB 500 million and a minimum of RMB 250 million [2]. - The total number of shares to be acquired is capped at 2% of the Company's total share capital, with no price range set for the buyback [2][4]. - The implementation period for the buyback plan is from May 16, 2025, to May 15, 2026 [2]. Group 2: Implementation Results - As of September 12, 2025, the Urban Construction Group completed the buyback plan, acquiring a total of 62,881,834 shares, which represents exactly 2% of the Company's total share capital [2][4]. - The total amount spent on the buyback was RMB 399,314,689.28, excluding transaction fees [2][4]. Group 3: Compliance and Control - The buyback plan and actions comply with relevant laws and regulations, including the Company Law and Securities Law of the People's Republic of China [5]. - The buyback will not result in a change of control for the Company or its actual controller [6]. - The Company has fulfilled its information disclosure obligations in accordance with the Shanghai Stock Exchange's rules and regulations [6].

证券代码：600820 证券简称：隧道股份 公告编号：2025-042 上海隧道工程股份有限公司 关于控股股东增持股份结果的公告 本公司董事会、全体董事及相关股东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。 重要内容提示： | 增持主体名称 | 上海城建（集团）有限公司 | | | | --- | --- | --- | --- | | 增持主体身份 | 控股股东或实控人 | 是 | 否 | | | 控股股东或实控人的一致行动人 | 是 | 否 | | | 直接持股 5%以上股东 | 是 | 否 | 一、增持主体的基本情况 （一）增持计划的实施结果 | 增持主体名称 | 上海城建（集团）有限公司 | | --- | --- | | 增持计划首次披露日 2025 | 年 5 月 17 日 | | 增持计划拟实施期间 2025 | 年 5 月 16 日～2026 年 5 月 15 日 | | 增持计划拟增持金额 A | 股：25,000 万元～50,000 万元 | | 增持计划拟增持数量 不适用 | | | 增持计划拟增持比例 | 不超 ...

Group 1 - The core point of the article is that Tunnel Corporation announced the completion of a share buyback plan by its controlling shareholder, Shanghai Urban Construction Group, which involved acquiring a total of 62,881,834 A-shares, representing 2.00% of the company's total share capital [2][3] - The total amount spent on the share buyback was approximately RMB 399,314,689.28, excluding transaction fees [2]

Group 1 - The core point of the article is that Tunnel Corporation (SH 600820) announced the completion of a share buyback plan by Shanghai Urban Construction Group, which acquired approximately 62.88 million A-shares, accounting for 2% of the total share capital, with a total investment of about RMB 399 million [1][1][1] Group 2 - For the first half of 2025, Tunnel Corporation's revenue composition is as follows: construction business accounted for 84.3%, operational business 6.91%, investment business 3.38%, design services 2.39%, and financing leasing 1.41% [1][1][1] - As of the report date, Tunnel Corporation's market capitalization is RMB 20.9 billion [1][1][1]

Market Overview - On September 12, the infrastructure sector rose by 0.64% compared to the previous trading day, with Dongzhu Ecological leading the gains [1] - The Shanghai Composite Index closed at 3883.69, up 0.22%, while the Shenzhen Component Index closed at 12996.38, up 0.13% [1] Top Gainers in Infrastructure Sector - Dongzhu Ecological (603359) closed at 11.15, up 9.96% with a trading volume of 6779.23 lots [1] - Jieneng Iron Han (300197) closed at 2.54, up 7.63% with a trading volume of 216.19 million [1] - Chengbang Co., Ltd. (603316) closed at 11.02, up 6.17% with a trading volume of 36.91 million [1] - Other notable gainers include Garden Co. (605303) up 5.99%, Hongrun Construction (002062) up 5.33%, and ST IF Ping (603843) up 4.89% [1] Top Losers in Infrastructure Sector - ST Yuancheng (603388) closed at 1.77, down 4.32% with a trading volume of 21.50 million [2] - Jiao Jian Co. (603815) closed at 10.94, down 3.19% with a trading volume of 21.38 million [2] - ST Lingnan (002717) closed at 1.62, down 2.99% with a trading volume of 107.95 million [2] Capital Flow Analysis - The infrastructure sector experienced a net outflow of 132 million yuan from institutional investors, while retail investors saw a net inflow of 169 million yuan [2] - Major stocks with significant capital flow include Xinjiang Jiaojian (002941) with a net outflow of 82.03 million yuan from institutional investors [3] - Other stocks like Pudong Construction (600284) and China Energy Construction (601868) saw net inflows of 71.73 million yuan and 70.45 million yuan from institutional investors, respectively [3]

本公司董事会、全体董事及相关股东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。 重要内容提示： | 增持主体名称 | 上海城建（集团）有限公司 | | | | --- | --- | --- | --- | | 增持主体身份 | 控股股东或实控人 | 是 | 否 | | | 控股股东或实控人的一致行动人 | 是 | 否 | | | 直接持股 5%以上股东 | 是 | 否 | 一、增持主体的基本情况 证券代码：600820 证券简称：隧道股份 公告编号：2025-042 上海隧道工程股份有限公司 关于控股股东增持股份结果的公告 （二）实际增持数量是否达到增持计划下限 是 否 _增持股份实施期间，城建集团通过上海证券交易所以集中竞价方式增持公 司股份62,881,834股，增持总金额为人民币399,314,689.28元（不含交易费用）， 本次增持计划实施完毕。 三、其他说明 （一）本次增持计划及增持行为符合《中华人民共和国公司法》《中华人民 共和国证券法》等法律法规、部门规章及交易所业务规则等有关规定。 已披露增持计划情况：上海隧道工程股 ...

Group 1 - The core point of the article is that Tunnel Corporation (隧道股份) has completed a share buyback plan initiated by Shanghai Construction Group, resulting in the acquisition of 62.88 million A-shares, which represents 2.00% of the total share capital of the company [1] - The total amount spent on the share buyback was approximately RMB 399 million, excluding transaction fees [1]

隧道股份（600820）(600820.SH)发布公告，公司于2025年9月12日收到控股股东城建集团发来的《上海 城建(集团)有限公司关于增持隧道股份A股股票计划实施情况的告知函》，城建集团已完成本次增持计 划，增持计划期间共计增持公司A股股份6288.18万股;占上市公司总股本的2%;增持股份金额共计人民币 3.99亿元(不含交易费用)。 ...

Group 1 - The core point of the article is that Tunnel Corporation (600820.SH) has completed a share buyback plan initiated by its controlling shareholder, Shanghai Urban Construction Group [1] - The controlling shareholder increased its stake by acquiring a total of 62.8818 million A-shares, which represents 2% of the company's total share capital [1] - The total amount spent on the share buyback was approximately RMB 399 million, excluding transaction fees [1]

Group 1 - The controlling shareholder, Shanghai Urban Construction (Group) Co., Ltd., has increased its stake in the company by acquiring 62.88 million A-shares, representing 2.00% of the total share capital [1] - The total amount invested in this share acquisition is 399 million yuan [1] - Following this transaction, the shareholding ratio of the controlling shareholder has risen from 30.49% to 32.49% [1]