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康欣新材料股份有限公司 关于控股股东增持公司股份计划时间过半 暨增持进展的公告

Core Viewpoint - The company’s major shareholder, Wuxi Construction Development Investment Co., Ltd., plans to increase its stake in the company to enhance investor confidence and maintain company value, with a total investment amounting to between RMB 26.9 million and RMB 53.79 million [1][2]. Summary by Sections Shareholder Buyback Plan - Wuxi Construction Development intends to buy back shares starting from April 10, 2025, for a period of 12 months, with a total investment not less than RMB 26.9 million and not exceeding RMB 53.79 million, representing up to 2% of the company's total share capital [1]. - The funding for this buyback will come from Wuxi Construction Development's own and self-raised funds [1]. Progress of the Buyback Plan - As of April 29, 2025, Wuxi Construction Development has purchased 387,800 shares, accounting for approximately 0.03% of the total share capital, with an investment of RMB 775,600 [1]. - By October 9, 2025, Wuxi Construction Development had increased its holdings by an additional 4,523,700 shares, totaling 4,911,500 shares, which is about 0.37% of the total share capital, with a cumulative investment of RMB 13.48 million [2][3]. Current Shareholding Status - After the buyback, as of October 10, 2025, Wuxi Construction Development holds 521,814,085 shares, representing 38.81% of the company's total share capital [3].