Beijing Biostar Pharmaceuticals Co., Ltd. — Proxy Solicitation & Information Statement 2025

May 2, 2025

华昊中天
Biostar
Beijing Biostar Pharmaceuticals Co., Ltd.
北京華昊中天生物醫藥股份有限公司
(A joint stock company incorporated in the People's Republic of China with limited liability)
（於中華人民共和國註冊成立的股份有限公司）
(Stock code 股份代號: 2563)

Personal Identification Number 個人識別號碼:-

2 May 2025

Dear Shareholder(s),

Beijing Biostar Pharmaceuticals Co., Ltd. (the "Company")
- Extraordinary General Meeting ("EGM") of the Company to be held on Friday, 23 May 2025

The EGM of the Company will be held virtually using online platform at http://meetings.computershare.com/biostar20250523 (the "Online Platform") on Friday, 23 May 2025 at 10:00 a.m. The EGM will be a virtual meeting. Shareholders will be able to view the live video broadcast, participate in voting and submit questions in written form at the EGM through the Online Platform.

Online Attendance at the EGM

You will be able to view the live video broadcast of the EGM, cast your votes on the resolutions in real time and submit questions to the Company. From 9:00 a.m. on Friday, 23 May 2025, you can log in to the EGM Online Platform by visiting the meeting website and entering the following details:

• Meeting website: http://meetings.computershare.com/biostar20250523
• Shareholder number: your 10-digit shareholder reference number starting with "C" ("SRN") printed under the barcode on the top right corner of this letter
• Password: the five-digit Personal Identification Number (PIN) printed below the SRN

For corporate shareholders who wish to attend the EGM online, please call Computershare Hong Kong Investor Services Limited, the Company's Hong Kong Branch Share Registrar, at its hotline (852) 2862 8555 for arrangement.

By order of the Board
Beijing Biostar Pharmaceuticals Co., Ltd.
北京華昊中天生物醫藥股份有限公司
Dr. Tang Li
Chairperson and Executive Director

各位股東：

北京華昊中天生物醫藥股份有限公司（「本公司」）
- 於2025年5月23日（星期五）舉行之本公司股東特別大會（「股東特別大會」）

本公司之股東特別大會將於2025年5月23日（星期五）上午10時正以電子形式透過網上平台http://meetings.computershare.com/biostar20250523（「網上平台」）舉行。股東可透過網上平台觀看直播、投票及提交問題。

以網上方式出席股東特別大會

閣下可透過網上直播觀看股東特別大會，實時就決議案投票，並可於網上向本公司提交問題。由2025年5月23日（星期五）上午9時30分開始，閣下可瀏覽會議網站並輸入以下資料，以登入股東特別大會網上平台：

• 會議網站： http://meetings.computershare.com/biostar20250523
• 股東編號：印於本信函右上角條碼下，以字母「C」開始之閣下的十位數字股東參考編號
• 密碼：印於股東參考編號下之五位數字個人識別號碼

如閣下為公司股東並欲以網上方式出席股東特別大會，請致電本公司之香港證券登記分處香港中央證券登記有限公司（電話熱線(852) 2862 8555）以便作出安排。

承董事會命
Beijing Biostar Pharmaceuticals Co., Ltd.
北京華昊中天生物醫藥股份有限公司
主席及執行董事
Tang Li（唐莉）博士

2025年5月2日