Core Viewpoint - The company, Aisen Co., Ltd. (688720.SH), is benefiting from sustained industry demand and a steady increase in market share, leading to a robust order backlog and high capacity utilization [1] Group 1: Company Performance - The company has sufficient orders on hand and maintains a mid-to-high capacity utilization rate [1] - The positive PSPI photoresist has been delivered in small batches to some customers, while validation work is ongoing with several leading wafer fabs [1] Group 2: Product Development - The company is advancing the validation of ultra-sensitive PSPI and low-temperature curing negative PSPI products to meet various technical requirements [1]

Group 1 - The core point of the article highlights the performance of Aisen Co., which saw a decline of 2.96% on December 18, closing at 60.33 yuan, with a significant block trade occurring [1] - A total of 77,100 shares were traded in the block transaction, amounting to 3.8396 million yuan, with a discount rate of -17.45% [1] - The buyer was Dongfang Caifu Securities Co., Ltd., while the seller was Huatai Securities Co., Ltd. [1] Group 2 - Over the past three months, Aisen Co. has recorded five block trades with a cumulative transaction value of 40.2058 million yuan [1] - In the last five trading days, the stock has increased by 13.15%, although there has been a net outflow of 41.4666 million yuan from the main funds [1]

Group 1 - The core transaction of Aiyin Co., Ltd. involved a block trade of 77,100 shares, amounting to 3.8396 million yuan, which represented 1.14% of the total trading volume for the day [1] - The transaction price was 49.8 yuan per share, reflecting a discount of 17.45% compared to the market closing price of 60.33 yuan [1]

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： 本次权益变动系江苏艾森半导体材料股份有限公司（以下简称"公司"） 部分核心技术人员将其通过宁波艾龙创业投资合伙企业（有限合伙）（以下简称 "宁波艾龙"）间接持有的公司股份变更为其本人直接持有，不涉及向市场增持 或减持公司股份的情况； 本次权益变动系该核心技术人员基于对公司未来长期发展的信心，同时 为了更加严格、有效地履行股份锁定承诺进行； 本次权益变动不会导致公司控股股东或实际控制人发生变化，不触及要 约收购。 证券代码：688720 证券简称：艾森股份 公告编号：2025-081 江苏艾森半导体材料股份有限公司 关于部分核心技术人员持股方式发生变动的公告 三、本次权益变动的目的及合规性 基于对公司未来长期发展的信心，同时为了更加严格、有效地履行股份锁定 承诺，胡青华先生通过大宗交易方式受让其通过宁波艾龙间接持有的公司股份。 公司上市时，核心技术人员承诺如下： "一、自发行人股票上市之日起 12 个月内和本人离职后 6 个月内，本人不 转让或者委托他人管理本人 ...

江苏艾森半导体材料股份有限公司 关于变更签字注册会计师的公告 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： 江苏艾森半导体材料股份有限公司（以下简称"公司"）2025 年度财务 报告和内部控制审计机构仍然为上会会计师事务所（特殊普通合伙）（以下简称 "上会事务所"），未发生变更； 本次签字注册会计师变动系因上会事务所业务团队整体安排，上会事务 所指派周思艺接替张扬作为签字注册会计师，继续完成公司 2025 年度财务报告 和内部控制审计相关工作； 证券代码：688720 证券简称：艾森股份 公告编号：2025-082 二、本次变更的签字注册会计师信息 （一）基本信息 （1）变更后项目合伙人、签字注册会计师：耿磊，1995 年成为中国注册会 计师，1993 年开始从事上市公司审计，1995 年开始在上会事务所执业，从 2023 年开始为本公司提供审计服务，担任公司签字注册会计师，近 3 年签署过 6 家上 市公司审计报告，从事上市公司年审、IPO 申报审计、重组改制等专业服务已逾 29 年，具有丰富的证券服务 ...

Core Viewpoint - The announcement indicates a change in the shareholding structure of the company, where a key technical personnel, Mr. Hu Qinghua, has converted his indirect shareholding into direct ownership without increasing or decreasing the total shares held in the market [1] Group 1 - Mr. Hu Qinghua, the company's R&D director, acquired 77,100 shares through a block trade on December 18, 2025 [1] - The change in shareholding is a shift from indirect to direct ownership, involving no market transactions for increasing or decreasing shares [1]

Core Viewpoint - The trading activity of Aisen Co., Ltd. on December 17 indicates significant transactions at a discount compared to the closing price, reflecting market dynamics and investor sentiment [2][3]. Group 1: Trading Activity - On December 17, Aisen Co., Ltd. recorded four block trades totaling 718,700 shares, with a total transaction value of 36.3662 million yuan [2]. - The transaction price was 50.60 yuan per share, representing an 18.61% discount relative to the closing price of the day [2]. - Over the past three months, the stock has seen six block trades with a cumulative transaction value of 40.377 million yuan [2]. Group 2: Stock Performance - The closing price of Aisen Co., Ltd. on the same day was 62.17 yuan, marking a decline of 1.68% [2]. - The stock's turnover rate for the day was 12.44%, with a total trading volume of 432 million yuan [2]. - In the last five days, the stock has appreciated by 15.34%, despite a net outflow of 37.5846 million yuan in funds [2]. Group 3: Financing Data - The latest margin financing balance for Aisen Co., Ltd. is 276 million yuan, which has increased by 30.8675 million yuan over the past five days, reflecting a growth rate of 12.61% [3]. - Aisen Co., Ltd. was established on March 26, 2010, with a registered capital of 88.13334 million yuan [3].

Core Insights - A total of 19 stocks on the Sci-Tech Innovation Board (STAR Market) experienced block trading on December 17, with a cumulative transaction value of 401 million yuan [1][2]. Trading Overview - The highest transaction value was recorded for Tuojing Technology, with 2 block trades totaling 300,000 shares and a transaction amount of 100 million yuan. Other notable transactions included Huahai Qingshi and Xinghuan Technology, with transaction amounts of 63.68 million yuan and 48.36 million yuan respectively [1][2]. - The average discount rate for block trades relative to the closing price was highest for Kangxi Communication, Aisen Co., and Anbotong, with discount rates of 19.93%, 18.61%, and 15.00% respectively. The only stock with a premium was Haosen Intelligent, with a premium rate of 0.57% [1][2]. Market Performance - The STAR 50 Index rose by 2.47% on the same day, with 459 stocks (76.88%) on the STAR Market experiencing price increases. The average increase for stocks involved in block trading was 0.85%, with the largest gains seen in Xinghuan Technology, Dekeli, and Lankai Technology, which rose by 5.71%, 4.28%, and 3.28% respectively. Conversely, Guobo Electronics, Aisen Co., and Ao Precision Medical saw declines of 2.45%, 1.68%, and 1.16% respectively [1][2]. Institutional Participation - Among the block trades, 12 transactions involved institutional buyers or sellers, covering 8 stocks. The leading stocks for institutional purchases were Tuojing Technology, Xinghuan Technology, and Aojie Technology, with purchase amounts of 100 million yuan, 48.36 million yuan, and 39.77 million yuan respectively. The primary stock sold by institutions was Guobo Electronics, with a selling amount of 5.02 million yuan [2][3]. Fund Flow Analysis - Of the stocks involved in block trading, 6 experienced net inflows of funds, with the highest net inflows recorded for Lankai Technology, Dekeli, and Xinghuan Technology, amounting to 116 million yuan, 91.76 million yuan, and 48.10 million yuan respectively. In contrast, Tuojing Technology, Huahai Qingshi, and Aisen Co. faced net outflows of 142 million yuan, 70.34 million yuan, and 47.92 million yuan respectively [2][3].

本次权益变动系江苏艾森半导体材料股份有限公司（以下简称"公司"） 部分董事、高级管理人员将其通过宁波艾龙创业投资合伙企业（有限合伙）（以 下简称"宁波艾龙"）间接持有的公司股份变更为其本人直接持有，不涉及向市 场增持或减持公司股份的情况； 本次权益变动系该等人员基于对公司未来长期发展的信心，同时为了更 加严格、有效地履行股份锁定承诺进行； 证券代码：688720 证券简称：艾森股份 公告编号：2025-080 江苏艾森半导体材料股份有限公司 关于部分董事、高级管理人员持股方式发生变动 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、准确性和完整性依法承担法律责任。 重要内容提示： 本次权益变动不会导致公司控股股东或实际控制人发生变化，不触及要 约收购。 一、本次权益变动的基本情况 近日，公司收到股东宁波艾龙的通知，基于对公司未来长期发展的信心，同 时为了更加严格、有效地履行股份锁定承诺，公司董事、常务副总经理、董事会 秘书陈小华先生，公司副总经理、销售总监谢立洋先生于 2025 年 12 月 17 日以 大宗交易方式受让其原通过宁波艾龙间接持有的公 ...

重要内容提示： 证券代码：688720 证券简称：艾森股份 公告编号：2025-079 江苏艾森半导体材料股份有限公司 2025年第三次临时股东会决议公告 本公司董事会及全体董事保证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。 本次会议是否有被否决议案：无 一、 会议召开和出席情况 （一） 股东会召开的时间：2025 年 12 月 15 日 （二） 股东会召开的地点：江苏省昆山市千灯镇中庄路 299 号江苏艾森半导体 材料股份有限公司五楼会议室 （三） 出席会议的普通股股东、特别表决权股东、恢复表决权的优先股股东及 其持有表决权数量的情况： | 1、出席会议的股东和代理人人数 | 53 | | --- | --- | | 普通股股东人数 | 53 | | 2、出席会议的股东所持有的表决权数量 | 28,772,204 | | 普通股股东所持有表决权数量 | 28,772,204 | | 3、出席会议的股东所持有表决权数量占公司表决权数量的比例（%） | 33.0756 | | 普通股股东所持有表决权数量占公司表决权数量的比例（%） | 33.075 ...