Shanghai Serum Bio-technology Co., Ltd. Class ASSE: 688163

Announcement on Listing and Circulation of Restricted Shares in Initial Public Offering

· Issued by Shanghai Serum Bio-technology Co., Ltd. Class A via Shanghai Stock Exchange
The total number of shares to be listed and circulated is 63,848,000; the listing and circulation date is September 11, 2025.

The abstract is for reference only. Please refer to the full text of the announcement on the very day.

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