Core Points - The company held its second extraordinary general meeting on September 12, 2025, where it approved the proposal to cancel the supervisory board and amend the Articles of Association [1] - The company elected Mr. Liang Kaiyu as the employee director of the fourth board of directors on September 18, 2025, during the employee representative assembly [1][3] - Mr. Liang previously served as a non-employee representative director and his new role as employee director will not affect the board's legal composition or the company's operations [2] Group 1 - The company announced the election of an employee director as per the amended Articles of Association, which stipulates one employee director elected by the employees [3] - Mr. Liang Kaiyu's term as employee director will last until the end of the fourth board's term [3] - The company confirmed that the departure of Mr. Liang from his previous non-employee director role will not impact the board's functioning or the company's development [2] Group 2 - Mr. Liang Kaiyu, born in 1967, has a background in various roles within the company, including general manager and union chairman, and currently serves as the deputy secretary of the party committee [5]

Core Points - Jilin Expressway announced the election of Mr. Liang Kaiyu as the employee director of the company's fourth board of directors, effective September 18, 2025 [2] - Mr. Liang previously served as a non-employee representative director, and his new role as employee director will terminate his previous position [2]

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。 证券代码：601518 证券简称：吉林高速 公告编号：临 2025-029 吉林高速公路股份有限公司 关于选举职工董事暨董事职务变更的公告 二、选举公司职工董事情况 根据《公司法》及《公司章程》的规定，公司董事会设职工董事 1 名，由公 司职工通过职工代表大会选举产生。 公司于 2025 年 9 月 18 日在公司四楼会议室召开职工代表大会并做出决议， 选举梁开宇先生为公司第四届董事会职工董事，任期自本次职工代表大会选举通 过之日起至公司第四届董事会任期届满之日止。 吉林高速公路股份有限公司（以下简称公司）于 2025 年 9 月 12 日召开 2025 年第二次临时股东大会，审议通过《关于取消监事会并修订<公司章程>的议案》。 根据修订的《公司章程》规定，公司董事会设职工董事 1 名，由公司职工通过职 工代表大会选举产生。 公司于 2025 年 9 月 18 日在公司四楼会议室召开职工代表大会并做出决议， 选举梁开宇先生为公司第四届董事会职工董事。梁开宇先生此前担任公司第四届 ...

登录新浪财经APP 搜索【信披】查看更多考评等级 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。 重要内容提示： ●会议召开时间：2025年9月26日(星期五)上午 09:00-10:00 ③会议召开地点：上海证券交易所上证路演中心 （网址：http://roadshow.sseinfo.com/） （二）会议召开地点：上海证券交易所上证路演中心 （网址：http://roadshow.sseinfo.com/） （三）会议召开方式：上证路演中心网络互动 ③会议召开方式：上证路演中心网络互动 ③投资者可于2025年9月19日(星期五)至9月25日(星期四)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（jlgs@jlgsgl.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。 吉林高速公路股份有限公司（以下简称公司）已于2025年8月28日披露公司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，公司计划于2025年9月26日上午 09 ...

证券代码：601518 证券简称：吉林高速 公告编号：临 2025-028 吉林高速公路股份有限公司 关于召开 2025 年半年度业绩说明会的公告 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、准确性和完整性承担法律责任。 重要内容提示： ●会议召开时间：2025 年 9 月 26 日(星期五)上午 09:00-10:00 会议召开地点：上海证券交易所上证路演中心 （二）会议召开地点：上海证券交易所上证路演中心 （网址：http://roadshow.sseinfo.com/） （三）会议召开方式：上证路演中心网络互动 （网址：http://roadshow.sseinfo.com/） 会议召开方式：上证路演中心网络互动 投资者可于 2025 年 9 月 19 日(星期五)至 9 月 25 日(星期四)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 （jlgs@jlgsgl.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。 吉林高速公路股份有限公司（以 ...

Quantitative Factors and Construction Methods - **Factor Name**: Large Buy Order Transaction Amount Ratio **Factor Construction Idea**: This factor captures the buying behavior of large funds by analyzing the proportion of large buy orders in the total transaction amount for a given day [7] **Factor Construction Process**: 1. Utilize tick-by-tick transaction data to reconstruct buy and sell order data based on the bid and ask sequence numbers [7] 2. Filter transactions based on order size to identify large orders [7] 3. Calculate the proportion of large buy order transaction amounts to the total transaction amount for the day [7] **Formula**: $ \text{Large Buy Order Transaction Amount Ratio} = \frac{\text{Large Buy Order Amount}}{\text{Total Transaction Amount}} $ **Factor Evaluation**: This factor effectively reflects the buying behavior of large funds [7] - **Factor Name**: Net Active Buy Transaction Amount Ratio **Factor Construction Idea**: This factor measures the active buying behavior of investors by analyzing the net active buy transaction amount as a proportion of the total transaction amount for a given day [7] **Factor Construction Process**: 1. Use tick-by-tick transaction data to classify each transaction as either active buy or active sell based on the buy/sell indicator [7] 2. Calculate the net active buy transaction amount by subtracting the active sell amount from the active buy amount [7] 3. Compute the proportion of the net active buy transaction amount to the total transaction amount for the day [7] **Formula**: $ \text{Net Active Buy Transaction Amount Ratio} = \frac{\text{Active Buy Amount} - \text{Active Sell Amount}}{\text{Total Transaction Amount}} $ **Factor Evaluation**: This factor provides insights into the active buying tendencies of investors [7] Factor Backtesting Results - **Large Buy Order Transaction Amount Ratio**: - Top 10 stocks with the highest 5-day average values: 1. Guofa Co., Ltd. (600538.SH): 86.5%, 97.9% time-series percentile [9] 2. Jilin Expressway (601518.SH): 86.3%, 82.3% time-series percentile [9] 3. Chongqing Iron & Steel (601005.SH): 85.8%, 83.1% time-series percentile [9] 4. Zijin Bank (601860.SH): 85.6%, 62.6% time-series percentile [9] 5. Jianyuan Trust (600816.SH): 85.5%, 90.5% time-series percentile [9] - **Net Active Buy Transaction Amount Ratio**: - Top 10 stocks with the highest 5-day average values: 1. Fangda Special Steel (600507.SH): 24.8%, 100.0% time-series percentile [10] 2. Liaogang Co., Ltd. (601880.SH): 18.3%, 95.1% time-series percentile [10] 3. Overseas Chinese Town A (000069.SZ): 17.6%, 99.6% time-series percentile [10] 4. Qixia Construction (600533.SH): 14.6%, 99.2% time-series percentile [10] 5. Wanwei High-Tech (600063.SH): 14.3%, 99.6% time-series percentile [10] Additional Results for Indices, Industries, and ETFs - **Indices**: - Large Buy Order Transaction Amount Ratio (5-day average): - Shanghai Composite Index: 74.2%, 25.1% time-series percentile [12] - CSI 300: 73.1%, 10.7% time-series percentile [12] - Net Active Buy Transaction Amount Ratio (5-day average): - Shanghai Composite Index: -4.3%, 95.5% time-series percentile [12] - CSI 300: -4.5%, 100.0% time-series percentile [12] - **Industries**: - Large Buy Order Transaction Amount Ratio (5-day average): - Steel: 80.6%, 46.9% time-series percentile [13] - Construction: 79.5%, 62.6% time-series percentile [13] - Net Active Buy Transaction Amount Ratio (5-day average): - Steel: 4.0%, 40.7% time-series percentile [13] - Construction: 2.4%, 70.8% time-series percentile [13] - **ETFs**: - Large Buy Order Transaction Amount Ratio (5-day average): - ChinaAMC SSE 50 ETF (510050.SH): 89.3%, 74.1% time-series percentile [15] - GF CSI All-Index IT ETF (159939.SZ): 89.2%, 54.3% time-series percentile [15] - Net Active Buy Transaction Amount Ratio (5-day average): - Huaan SSE STAR Chip ETF (588290.SH): 17.3%, 99.6% time-series percentile [16] - Harvest CSI Battery Theme ETF (562880.SH): 13.9%, 92.2% time-series percentile [16]

Meeting Overview - The company's board of directors confirmed that the announcement contains no false records, misleading statements, or significant omissions, and they bear legal responsibility for its authenticity, accuracy, and completeness [1] - The shareholders' meeting was held on September 12, 2025, at the company's conference room in Changchun [1] - The meeting was chaired by Chairman Yu Jiangtao, and voting was conducted through a combination of on-site and online methods, complying with relevant laws and regulations [1] Attendance - All 6 current directors attended the meeting, while 2 out of 3 supervisors were present, with one supervisor absent due to work commitments [1] - The company secretary and other senior executives also attended the meeting [1] Resolutions Passed - The following proposals were approved: 1. Proposal to abolish the supervisory board and amend the Articles of Association [2] 2. Proposal to amend the Rules of Procedure for Shareholders' Meetings [2] 3. Proposal to amend the Rules of Procedure for Board Meetings [2] 4. Proposal to amend the Independent Director Work System [2] 5. Proposal to amend the Related Party Transaction Management System [2] 6. Proposal to amend the Implementation Rules for Cumulative Voting [2] 7. Proposal to establish a system for managing shares held by shareholders, directors, and senior management [2] Voting Details - The first proposal, which was a special resolution, received approval from over two-thirds of the voting rights held by shareholders present at the meeting [2] Legal Verification - The meeting was witnessed by Jilin Kaisheng Law Firm, and the lawyers concluded that the meeting's procedures complied with relevant laws and regulations, and the resolutions made were legal and valid [3]

Meeting Overview - The second extraordinary general meeting of shareholders was held on September 12, 2025, at the company's conference room in Changchun [2] - The meeting was convened by the board of directors and chaired by Chairman Yu Jiangtao, utilizing a combination of on-site and online voting methods [2][3] Attendance and Voting - All 6 current directors attended the meeting, while 2 out of 3 supervisors were present; Supervisor Huo Changshun was absent due to work commitments [3] - The voting methods complied with the Company Law and the company's articles of association [2] Resolutions Passed - The following resolutions were approved: 1. Cancellation of the supervisory board and amendment of the articles of association [3] 2. Revision of the company's shareholder meeting rules [4] 3. Revision of the board meeting rules [4] 4. Revision of the independent director working system [4] 5. Revision of the related party transaction management system [4] 6. Revision of the cumulative voting system implementation details [4] 7. Establishment of a management system for shares held by shareholders, directors, and senior management [4] Legal Verification - The meeting was witnessed by Jilin Kaisheng Law Firm, with lawyers Xu Ping and Qi Sen providing legal opinions confirming the legality of the meeting's procedures and resolutions [5]

第一条 为规范公司的关联交易，保证公司关联交易的 公允性，维护公司及公司全体股东的合法权益，根据《公司 法》《证券法》《上市公司治理准则》《企业会计准则-关 联方关系及其交易的披露》、上海证券交易所《股票上市规 则》《上市公司自律监管指引第5号——交易与关联交易》 及《公司章程》等法律法规的有关规定，结合公司实际情况， 制订本制度。 吉林高速公路股份有限公司 关联交易管理制度 （2025 年 9 月 12 日 经公司 2025 年第二次临时股东大会审议通过） 第一章 总则 第二条 本制度对公司股东、董事和管理层具有约束力， 公司股东、董事和管理层必须遵守。 第三条 控股股东、实际控制人与公司发生关联交易， 应当遵循平等、自愿、等价、有偿的原则，并签署书面协议， 不得要求公司与其进行显失公平的关联交易，不得要求公司 无偿或者以明显不公平的条件为其提供商品、服务或者其他 资产，不得通过任何方式影响公司的独立决策，不得通过欺 诈、虚假陈述或者其他不正当行为等方式损害公司和中小股 东的合法权益。 公司应将该协议的订立、变更、终止及履行情况等事项 按照有关规定予以披露。 第四条 关联交易活动应遵循公正，公平，公开的原则 ...

吉林高速公路股份有限公司 JILIN EXPRESSWAYCO.,LTD. 章 程 （2025 年 9 月修订） 目 录 第四章 股东和股东会 第五章 董事和董事会 - 1 - 第一章 总则 第二章 经营宗旨和范围 第三章 股份 第一节 股份发行 第二节 股份增减和回购 第三节 股份转让 第一节 股东的一般规定 第二节 控股股东和实际控制人 第三节 股东会的一般规定 第四节 股东会的召集 第五节 股东会的提案与通知 第六节 股东会的召开 第七节 股东会的表决和决议 第一节 董事的一般规定 第二节 董事会 第三节 独立董事 第四节 董事会专门委员会 第六章 高级管理人员 第七章 党的组织 - 2 - 第八章 财务会计制度、利润分配和审计 第一节 财务会计制度 第二节 内部审计 第三节 会计师事务所的聘任 第九章 通知和公告 第一节 通知 第二节 公告 第十章 合并、分立、增资、减资、解散和清算 第一节 合并、分立、增资和减资 第二节 解散和清算 第十一章 修改章程 第十二章 附则 吉林高速公路股份有限公司章程 （2025 年 9 月 12 日 经公司 2025 年第二次临时股东大会审议通过） 第一章 总则 第一 ...