Announcement on Participating in Investor Collective Reception Day and 2025 Annual Performance Briefing

Securities Code: 002390 Securities Abbreviation: Xinbang Pharmaceutical Announcement No.: 2026-015 Guizhou Xinbang Pharmaceutical Co., Ltd. Announcement on Participating in Investor Collective Reception Day and 2025 Annual Performance Briefing The Company and all members of the Board of Directors guarantee that the information disclosed is true, accurate, and complete, and contains no false records, misleading statements, or significant omissions. Guizhou Xinbang Pharmaceutical Co., Ltd. (hereinafter referred to as the "Company") disclosed its "2025 Annual Report" on the Juchao Information Network (www.cninfo.com.cn) on April 21, 2026. To strengthen communication and interaction with investors and to facilitate investors' further understanding of the Company's 2025 operating performance and other matters of concern, the Company will participate in the 2026 Guizhou Area Listed Companies Investor Collective Reception Day (2025 Annual Performance Briefing) organized by the Guizhou Securities Association in conjunction with Shenzhen All-Round Network Co., Ltd., under the guidance of the Guizhou Securities Regulatory Bureau. The specific arrangements are as follows: I. Arrangement of the Performance Briefing Time: May 11, 2026, 15:30-17:30. Method: Online remote. Attendees: Ms. Kong Lingzhong, Director and General Manager; Mr. Liu Jie, Independent Director; Ms. Xiao Yanjun, Deputy General Manager and Chief Financial Officer; Ms. Chen Chuan, Deputy General Manager and Secretary of the Board. Participation Method: Investors can log in to the special zone page at http://rs.p5w.net during the performance briefing to participate in the exchange. II. Advance Collection of Investor Questions To widely solicit investors' opinions and suggestions and to improve communication efficiency and relevance, the Company will conduct advance collection of questions from investors for this performance briefing. The question submission channel will be open from the date of this announcement until May 8, 2026. Please follow the "Guizhou Capital Market" official WeChat account and send the keyword "Question" to enter the special zone to ask questions. The Company will answer investors' commonly asked questions during this briefing. We welcome investors to actively participate in this annual performance briefing. Hereby announced. Guizhou Xinbang Pharmaceutical Co., Ltd. Board of Directors April 29, 2026