Potech Bio: Yu Xiuping plans to reduce her shareholding by 3% starting in September.

Botu Biology Announcement: As of the disclosure date of this announcement, Yu Xiuping, the actual controller, holds 24.9536 million shares of the company, accounting for 16.71%. Due to her own financial needs, she plans to reduce her holdings by not more than 1.4933 million shares through centralized bidding from September 12, 2025 to December 11, 2025, and by not more than 2.9867 million shares through block trading, totaling up to 4.48 million shares, which is not more than 3%.