A-share Announcement Highlights | GigaDevice Semiconductor Inc. (603986.SH): Holding a small percentage of shares in Changxin Technology, the controlling shareholder's reduction plan is still being implemented.

Focus Today 1. Anhui Conch Cement: Proposes to repurchase company A shares with an amount ranging from 600 million to 1 billion RMB Anhui Conch Cement announced that the company plans to repurchase company A shares through centralized bidding trading, with a repurchase amount not less than 600 million RMB (inclusive) and not more than 1 billion RMB (inclusive). The repurchase price shall not exceed 27.71 RMB per share, and the purpose of the repurchase is to maintain the company's value and shareholder rights (reduce registered capital). The repurchase period is from May 29, 2026, to August 25, 2026. 2. GigaDevice Semiconductor Inc.: Holds a small stake in Changxin Technology, and the controlling shareholder's reduction plan is still ongoing GigaDevice Semiconductor Inc. announced that the company's stock price has deviated by over 20% for three consecutive trading days, which constitutes abnormal stock trading fluctuations. The company has recently noted some reports in the media stating that the company's stock is related to the initial public offering and listing of shares of Changxin Technology Group Limited ("Changxin Technology"). As of the disclosure date of this report, the company holds a stake in Changxin Technology that accounts for only 1.80% of its current total equity, with a small stake that does not allow the company to exert significant influence on its production and business decisions. The company's investment in Changxin Technology is accounted for in the "Other Equity Instrument Investments" account, and the fair value changes resulting from Changxin Technology's initial public offering and listing have no direct impact on the company's current and future net profit. On the same day, the company announced that it had received a letter of notification from shareholder Zhu Yiming regarding the change in equity exceeding the 1% threshold. During the period from May 11, 2026, to May 25, 2026, Zhu Yiming accumulated a reduction of 6.3299 million shares of the company's stock through centralized bidding and block trading, accounting for 0.90% of the company's total stock. After this change in equity, the total shareholding percentage of Zhu Yiming and its concerted action with Hong Kong Ying Fude Co., Ltd. decreased from 7.90% to 7.00%, reaching the 1% threshold. As of the date of this announcement, the share reduction plan has not yet been completed. 3. Maxvision Technology Corp.: Wholly-owned subsidiary signs a 6 billion RMB computing power industry cooperation agreement Maxvision Technology Corp. announced that its wholly-owned subsidiary, Shenzhen Shengshi Technology Co., Ltd., recently signed a "Computing Power Industry Cooperation Agreement" with a certain company, engaging in deep strategic cooperation in the four core dimensions of computing and electricity coordination, AIDC intelligent computing power center operation, computing power industry resource integration, and computing power service procurement and delivery. The overall cooperation corresponding to this agreement amounts to approximately 6 billion RMB. The signing of this cooperation agreement marks an important milestone in the company's layout of computing power services, providing strong support for the growth of the company's computing power service business and driving the computing power service business to become a new engine for the company's revenue growth. 4. Beijing Bayi Space Lcd Technology Co., Ltd.: Photoresist resin achieves large-scale production, verified and mass-produced in wafer factories Beijing Bayi Space Lcd Technology Co., Ltd. released an Investor Relations Activity Record Sheet announcement, stating that the company's photoresist resin has successfully achieved large-scale production, serving top photoresist customers, and has been verified and mass-produced in wafer factories. With smooth customer authentication and increasing order volumes, capacity utilization has increased and costs have continued to decrease. However, the company is increasing research and development investment in resin materials, actively promoting the construction of larger-scale production lines, which is expected to lead to an increase in various expenses. The company hopes to achieve profitability in the photoresist resin business in the future through further scaling up the supply. The company has the research and production capabilities of a full range of high-end semiconductor photoresists (KrF) and is collaborating with multiple leading photoresist manufacturers. Currently, multiple resin products have been mass-produced and delivered to customers, with improvements in product quality and order volume, and stable ton-level shipments have been achieved. 5. Shenzhen Kaifa Technology: Subsidiary plans to expand high-end storage chip packaging and testing capacity, with a total investment of 1.47 billion RMB Shenzhen Kaifa Technology announced that its wholly-owned subsidiary Shenzhen Peidun and its holding subsidiary Hefei Peidun Storage plan to implement the expansion project of high-end storage chip packaging and testing capacity, with a total investment of 1.47 billion RMB. The funds will be used to purchase high-end chip testing machines, high-precision wafer grinding integrated machines, equipment for plant renovation, and supporting power facilities. After the project is completed and put into production, Shenzhen Peidun is expected to increase its monthly packaging capacity by 5 million grains and testing capacity by 8 million chips, while Hefei Peidun Storage is expected to increase its monthly packaging capacity by 28.8 million grains. 6. OKE Precision Cutting Tools: Shareholder inquiry transfer pricing is 96.45 RMB per share, with a discount of 31.1% compared to the closing price today OKE Precision Cutting Tools announced that based on the inquiry subscription situation on May 26, 2026, the preliminary determined transfer pricing for this inquiry is 96.45 RMB per share. A total of 65 institutional investors participated in the bidding, with an effective subscription ratio of 2.36 times. The total number of shares intended to be transferred is 8,732,993 shares. Note: OKE Precision Cutting Tools' closing price today is 139.88 RMB per share, with a discount of 31.1% compared to the transfer pricing. 7. Guangzhou Tinci Materials Technology: Plans to carry out preliminary work for a 160,000-ton high-voltage lithium iron phosphate project, with a total investment of no more than 2.1 billion RMB Guangzhou Tinci Materials Technology announced that its subsidiary Taizhou Tianci plans to carry out preliminary work for a 160,000-ton high-voltage lithium iron phosphate project, with a total investment of no more than 2.1 billion RMB. The project is located in Taizhou, Zhejiang, aiming to strengthen the strategic layout of lithium-ion battery materials and establish a comprehensive competitive advantage in iron phosphate and lithium iron phosphate positive electrode materials. 8. *ST Wentai: Board of Directors proposes to downwardly adjust the conversion price of "Wentai Convertible Bonds" *ST Wentai announced that the 30th meeting of the 12th Board of Directors approved the "Proposal to Downwardly Adjust the Conversion Price of 'Wentai Convertible Bonds'" to support the company's long-term stable development, optimize capital structure, and fully protect the rights of investors. The Board of Directors proposes to downwardly adjust the conversion price of "Wentai Convertible Bonds" and submit it to the shareholders' meeting for approval. The revised conversion price should not be lower than the average trading price of the company's stock for the twenty trading days prior to the shareholders' meeting and the previous trading day's average price. This proposal is subject to approval by the shareholders' meeting. 9. Beijing YanDong MicroElectronic: Shareholder Yizhuang Guotou plans to reduce its stake by up to 1% Beijing YanDong MicroElectronic announced that its shareholder Beijing Yizhuang International Investment Development Co., Ltd., holding more than 5% of the shares, intends to reduce its stake by up to 1% of the total share capital, no more than 14,276,180 shares, through centralized bidding. The reduction period is from June 17, 2026, to September 17, 2026. 10. Linzhou Heavy Machinery Group: China Securities Regulatory Commission decides to initiate an investigation into the company for suspected illegal disclosure of information Linzhou Heavy Machinery Group announced that it received a "Filing Notification" from the China Securities Regulatory Commission on May 26, 2026. Due to suspected illegal disclosure of information, the China Securities Regulatory Commission has decided to initiate an investigation into the company. The company will actively cooperate with the investigation and fulfill its information disclosure obligations. At present, the company's production and operation are normal. Investors are advised to invest rationally and be aware of risks. 11. Yes Optoelectronics: Multiple shareholders plan to collectively reduce their holdings by up to 5.28% Yes Optoelectronics announced that its controlling shareholder, Yes Optoelectronics (Hong Kong) Co., Ltd., plans to reduce its holdings by up to 4.92 million shares (representing 2.9938% of the total share capital), shareholder Jie Zhigang plans to reduce holdings by up to 760,000 shares (representing 0.4625% of the total share capital), and shareholder and director/senior executive Brian Ruiqun plans to reduce holdings by up to 3 million shares (representing 1.8255% of the total share capital). The reduction will be conducted through centralized bidding or block trading within three months after 15 trading days following the announcement date, due to personal financial needs. Abnormal Stock Risks 1. Jiangsu Shuangxing Color Plastic New Materials, which has risen for three consecutive days: The revenue from MLCC products accounts for less than 1% of the company's overall revenue 2. Huasu Holdings, which has risen for two consecutive days: The equipment produced by its subsidiary Hongchuang Intelligence is used for the production and processing of micro-drills, not related to PCB production operations 3. Wus Printed Circuit: With the continuous release of the overall production capacity of the PCB industry, future market competition is expected to intensify 4. Forehope Electronic: The 2.5D packaging product line is currently undergoing sample verification with customers and has not yet been mass-produced Repurchase & Increase/Decrease Holdings 1. MLS Co., Ltd.: Controlling shareholders and actual controllers plan to increase their holdings by 100 million to 150 million RMB 2. Yantai Jereh Oilfield Services Group: Chairman and Vice President plan to increase their holdings by 8 million to 10 million RMB 3. Hangzhou Tigermed Consulting: Obtained a promise letter for stock repurchase loan from China Merchants Bank 4. Yongan Futures: Shareholder Zhejiang Orient Holdings Group plans to reduce its holdings by up to 3% 5. Sprint Precision Technologies: Shareholder Yuli Jia Partnership plans to reduce its holdings by up to 3% 6. Hunan Hengguang Technology: Shareholder Xiangjiang Investment plans to reduce its holdings by up to 2.99% 7. Suzhou K-Hiragawa Electronic Technology: Shareholder Shihuiqing plans to reduce its holdings by up to 2% Operating Performance China Petroleum Engineering: Cumulative new contract amount for January-April is 71.8 billion RMB, a year-on-year increase of 69.91% Large Orders 1. Zhejiang Jingu: Received a designated notification for the Avanda Low Carbon Wheel Project 2. China Railway Signal & Communication Corporation: Won five important projects from March to April, with a total bid amount of about 900 million RMB This article is reprinted from "Tencent Self-selected Stocks", GMTEight Editor: Xu Wenqiang.