Dian Diagnostics Group Co.,Ltd. (300244.SZ) announced that its director, Ye Xiaoping, received a "Case Initiation Notice" from the China Securities Regulatory Commission (CSRC) on May 12, 2026. The CSRC has decided to initiate an investigation into Ye Xiaoping for alleged violations of information disclosure regulations related to shareholding changes in Hangzhou Tigermed Consulting Co.,Ltd. ("Tigermed"). It is reported that this investigation pertains to information disclosure matters concerning Ye Xiaoping's historical changes in Tigermed shareholdings. The matter is unrelated to the stock transactions, information disclosures, or business operations of Dian Diagnostics and is not expected to impact the company's normal operations.