Shanghai Junshi Biosciences : OVERSEAS REGULATORY ANNOUNCEMENT - SHANGHAI JUNSHI BIOSCIENCES CO., LTD.* ANNOUNCEMENT ON RESOLUTION OF THE TWENTIETH MEETING OF THE SECOND SESSION OF THE SUPERVISORY COMMITTEE

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

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)

OVERSEAS REGULATORY ANNOUNCEMENT

This announcement is made pursuant to Rule 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

Reference is made to the "Shanghai Junshi Biosciences Co., Ltd.* Announcement on Resolution of the Twentieth Meeting of the Second Session of the Supervisory Committee" published by Shanghai Junshi Biosciences Co., Ltd. on the website of the Shanghai Stock Exchange, for reference purpose only. The following is a translation of the official announcement solely for the purpose of providing information. Should there be any discrepancies, the Chinese version will prevail.

By order of the Board

Shanghai Junshi Biosciences Co., Ltd.*

Mr. Xiong Jun

Chairman

Shanghai, the PRC, 24 July 2020

As at the date of this announcement, the board of directors of the Company comprises Mr. Xiong Jun, Dr. Li Ning, Dr. Feng Hui, Mr. Zhang Zhuobing, Dr. Wu Hai and Dr. Yao Sheng as executive Directors; Mr. Tang Yi, Mr. Li Cong, Mr. Yi Qingqing and Mr. Lin Lijun as non-executive Directors; and Dr. Chen Lieping, Mr. Chen Xinjun, Mr. Qian Zhi, Mr. Zhang Chun and Dr. Roy Steven Herbst as independent non-executive Directors.

• For identification purposes only

Stock code: 688180

Stock short name: Junshi Bio

Announcement No.: Lin 2020-003

Shanghai Junshi Biosciences Co., Ltd.*

Announcement on Resolution of the Twentieth Meeting of the Second Session of the Supervisory Committee

The Supervisory Committee of the Company and all Supervisors warrant that the contents of the announcement are true, accurate and complete and that there is no false and misleading statement or material omission herein, and are severally and jointly responsible for the truthfulness, accuracy and completeness of the contents herein.

1. Convening of the Meeting of Supervisory Committee

Notice of the twentieth meeting of the second session of the Supervisory Committee of Shanghai Junshi Biosciences Co., Ltd.* (the "Company") was dispatched by post on 18 July 2020. The meeting was held by means of voting by correspondence on 24 July 2020.

Mr. Wu Yu, the chairman of the Supervisory Committee, was the chairman of the meeting. 5 Supervisors were entitled to be present at the meeting and 5 Supervisors attended the meeting. The procedures for convening and holding the meeting were in compliance with the Company Law of the People's Republic of China and the Articles of Association of Shanghai Junshi Biosciences Co., Ltd.*, and the resolution made therein was legal and valid.

1. Consideration of Resolution at the Meeting of Supervisory Committee The following matter was considered and approved at the meeting:

"Resolution on the Addition of New Implementation Entities for Investment Projects and the Entering Into of Quadripartite Agreement on Supervision of Special Deposit Account for Proceeds"

The Supervisory Committee of the Company is of the view that, the addition of new implementation entities for investment projects will facilitate the smooth implementation of investment projects. It is in line with the development of the Company without any conflict with the implementation of investment projects, and does not affect the normal carrying on of the investment projects. It will not alter the capital flow of proceeds in any way or harm the interests of shareholders.

Based on the above, the Supervisory Committee of the Company agreed the addition of new implementation entities.

Voting results: For: 5; Against: 0; Abstain: 0

For details, please refer to the "Announcement on the Addition of New Implementation Entities for Investment Projects and the Entering Into of Quadripartite Agreement on Supervision of Special Deposit Account for Proceeds of Shanghai Junshi Biosciences Co., Ltd.*" (announcement no.: Lin 2020-004) disclosed on the website of the Shanghai Stock Exchange (http://www.sse.com.cn) on the same date.

Notice is hereby given.

Shanghai Junshi Biosciences Co., Ltd.*

Supervisory Committee

25 July 2020

* For identification purpose only