Shanghai Junshi Biosciences Co., Ltd. — Proxy Solicitation & Information Statement 2019

Apr 30, 2019

SHANGHAI JUNSHI BIOSCIENCES CO., LTD. 上海君實生物醫藥科技股份有限公司*

(a joint stock company incorporated in the People’s Republic of China with limited liability)

(Stock code: 1877)

REPLY SLIP FOR THE 2019 FIRST CLASS MEETING OF H SHAREHOLDERS TO BE HELD ON MONDAY, 17 JUNE 2019

To: Shanghai Junshi Biosciences Co., Ltd.* (the “Company”)

I/We [(Note][1)] of [(Note][1)]

being the registered holder(s) of [(Note][2)]

H shares of the Company

hereby inform the Company that I/we intend to attend (in person or by proxy/proxies) the 2019 first class meeting of H Shareholders of the Company to be held immediately after the conclusion of the 2019 first class meeting of domestic shareholders of the Company or any adjournment thereof at Jumeirah Himalayas Hotel, Shanghai, No. 1108 Mei Hua Road, Pudong, Shanghai, the People’s Republic of China on Monday, 17 June 2019.

Date:

2019

Signature(s):

Notes:

1. Please insert full name(s) and address(es) (as shown in the register of members of H Shares) in BLOCK CAPITALS .

2. Please insert the number of H shares of the Company registered under your name(s). If no number is inserted, this reply slip will be deemed to relate to all H shares of the Company registered under your name(s).

3. In order to be valid, this completed and signed reply slip should be delivered to the Company’s H Share registrar, Tricor Investor Services Limited at Level 22, Hopewell Centre, 183 Queen’s Road East, Hong Kong (fax number: (852) 2810 8185) (for holder of H Shares) by hand, by post or by fax on or before Monday, 27 May 2019.

4. References to times and dates in this reply slip are to Hong Kong local times and dates.

• For identification purposes only.