Dian Diagnosis: The controlling shareholder pledged 20 million shares.

Dian Diagnostics Announcement: Mr. Chen Haibin, the controlling shareholder of the company, has pledged 20 million shares, accounting for 12.16% of his total holdings and 3.20% of the company's total share capital. The start date of this pledge is August 18, 2025, and the maturity date is August 18, 2026, with China Merchants Securities Co., Ltd. as the pledgee. The purpose of the pledge is to repay other pledged loans. Mr. Chen Haibin and his concerted action person Hangzhou Dian Holding Co., Ltd. have pledged a total of 97.46 million shares, accounting for 15.59% of the company's total share capital. Mr. Chen Haibin holds 164 million shares of the company, accounting for 26.31% of the total share capital, of which the pledged shares account for 59.27% of his total holdings.