ST Securities: Disclosure of progress in resolving other risk warnings on stock implementation.

ST Security Announcement, Rongcheng Certified Public Accountants issued a negative opinion audit report on the company's internal controls in 2025, and the company's stock has been subject to other risk warnings since April 29, 2026. The company attaches great importance to this matter and has taken multiple measures to address the issue, including streamlining and optimizing the full process management of R&D projects, organizational process refinement, training for relevant departments, strengthening internal control audits, organizing personnel to learn policies and regulations, and enhancing communication with regulatory authorities, to eliminate the impact and improve corporate governance.