Gao Mengxin Materials: Deputy General Managers Li Deyu, Shi Xiangqian, and Wang Xiaoping plan to reduce their holdings by 0.02%, 0.04%, and 0.001% respectively.

Announcement of Gaomeng New Materials: The company's vice general managers Li Deyu, Shi Xiangqian, and Wang Xiaoping plan to reduce their holdings through centralized bidding on the stock exchange from November 28, 2025 to February 27, 2026, with quantities not exceeding 102,600 shares, 158,000 shares, and 5,700 shares respectively, accounting for 0.02%, 0.04%, and 0.001% of the total share capital. As of the announcement date, the three individuals hold 410,600 shares, 631,800 shares, and 22,800 shares, accounting for 0.10%, 0.15%, and 0.01% respectively. The total number of shares reduced within any consecutive 90 days shall not exceed 1% of the company's total share capital.