Huahai Chengke announced that shareholder Yang Senmao reduced his holdings of the company's shares by 584,700 shares through centralized bidding and bulk trading from October 27, 2025 to November 10, 2025, accounting for 0.7246% of the company's total share capital at the time; from October 27, 2025 to November 11, 2025, the company's stock holdings were reduced by 592,400 shares through centralized bidding and bulk trading, with a proportional change of 0.7341%; on November 12, 2025, the company's stock holdings were reduced through centralized bidding and bulk trading. 1091,000 shares, with a proportional change of 0.5185%; from November 13, 2025 to December 16, 2025, the company's stock holdings were reduced by 368,900 shares through centralized bidding and bulk trading, with a proportional change of 0.4270%. After the above changes, Yang Senmao held 4.3198 million shares of the company, accounting for 5.0000% of the company's current total share capital.

Huahai Chengke announced that shareholder Yang Senmao reduced his holdings of the company's shares by 584,700 shares through centralized bidding and bulk trading from October 27, 2025 to November 10, 2025, accounting for 0.7246% of the company's total share capital at the time; from October 27, 2025 to November 11, 2025, the company's stock holdings were reduced by 592,400 shares through centralized bidding and bulk trading, with a proportional change of 0.7341%; on November 12, 2025, the company's stock holdings were reduced through centralized bidding and bulk trading. 1091,000 shares, with a proportional change of 0.5185%; from November 13, 2025 to December 16, 2025, the company's stock holdings were reduced by 368,900 shares through centralized bidding and bulk trading, with a proportional change of 0.4270%. After the above changes, Yang Senmao held 4.3198 million shares of the company, accounting for 5.0000% of the company's current total share capital.