Hongbo New Materials: Deputy General Manager Li Mingzi plans to reduce holdings by 0.02%.

Hongbo New Materials Announcement: Deputy General Manager Li Ming holds 551,400 shares of the company, accounting for 0.07%; he plans to reduce his holdings by no more than 137,000 shares through centralized competitive bidding from April 7, 2026 to July 6, 2026, accounting for 0.02%. The source of the shares is non-trading transfer of shares obtained before the initial public offering and capitalization reserves for capitalizing shares.