3SBio Inc. — AGM Information 2021

May 28, 2021

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.

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(Incorporated in the Cayman Islands with limited liability) (Stock Code: 1530)

CHANGE OF DATE OF ANNUAL GENERAL MEETING AND BOOK CLOSURE PERIOD

Reference is made to the annual results announcement for the year ended 31 December 2020 of 3SBio Inc. (the “ Company ”) dated 30 March 2021 (the “ Announcement ”) and the annual report of the Company for the year ended 31 December 2020 (the “ Annual Report ”). Unless otherwise defined, capitalized terms used in this announcement shall have the same meanings as those defined in the Annual Report.

As disclosed in the Announcement and the Annual Report, the forthcoming annual general meeting of the Company (the “ AGM ”) was initially scheduled to be held on Tuesday, 22 June 2021 and the register of members of the Company was initially scheduled to be closed from Thursday, 17 June 2021 to Tuesday, 22 June 2021 (both days inclusive).

The Company would like to announce that the AGM has been re-scheduled to Tuesday, 29 June 2021. In this respect, the book closure period for the purpose of ascertaining shareholders’ right to attend and vote at the AGM as set out in the Announcement and the Annual Report has been changed from the period from Thursday, 17 June 2021 to Tuesday, 22 June 2021 (both days inclusive) to the period from Thursday, 24 June 2021 to Tuesday, 29 June 2021 (both days inclusive).

In order to be eligible to attend and vote at the AGM, all properly completed transfer forms accompanied by the relevant share certificates must be lodged for registration with the Hong Kong share registrar of the Company, Computershare Hong Kong Investor Services Limited, at Shops 1712–1716, 17th Floor, Hopewell Centre, 183 Queen’s Road East, Wanchai, Hong Kong not later than 4:30 p.m. on 23 June 2021.

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The notice of the AGM containing details of the AGM has been published and despatched to the Shareholders on 28 May 2021. Save as disclosed above, all other information in the Announcement and the Annual Report remains the same.

By Order of the Board 3SBio Inc. Dr. LOU Jing Chairman

Shenyang, the PRC 28 May 2021

As at the date of this announcement, the Board comprises Dr. LOU Jing and Ms. SU Dongmei as executive directors; Mr. HUANG Bin and Mr. TANG Ke as non-executive directors; and Mr. PU Tianruo, Mr. David Ross PARKINSON and Dr. WONG Lap Yan as independent non-executive directors.

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