SEC Filings

Filing date	Form	Description	Filing Group	View
April 12, 2023	F-1	Registration statement for certain foreign private issuers	Registration Statements	View HTML 0001104659-23-044356.pdf 0001104659-23-044356.rtf 0001104659-23-044356.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
March 27, 2023	6-K	Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act	Current Reports	View HTML 0001104659-23-036902.pdf 0001104659-23-036902.rtf 0001104659-23-036902.xls
March 17, 2023	6-K	Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act	Current Reports	View HTML 0001104659-23-033484.pdf 0001104659-23-033484.rtf 0001104659-23-033484.xls
March 16, 2023	CERT	Paper Submission		View HTML 0001354457-23-000184.pdf
March 14, 2023	425	Filing of certain prospectuses and communications in connection with business combination transactions	Other	View HTML 0001104659-23-032357.pdf 0001104659-23-032357.rtf
February 21, 2023	425	Filing of certain prospectuses and communications in connection with business combination transactions	Other	View HTML 0001104659-23-023534.pdf 0001104659-23-023534.rtf 0001104659-23-023534.xls
February 21, 2023	424B3	Form of prospectus reflecting facts events constituting substantive change from last form	Registration Statements	View HTML 0001104659-23-023535.pdf 0001104659-23-023535.rtf
February 8, 2023	424B3	Form of prospectus reflecting facts events constituting substantive change from last form	Registration Statements	View HTML 0001104659-23-012172.pdf 0001104659-23-012172.rtf 0001104659-23-012172.xls
February 8, 2023	425	Filing of certain prospectuses and communications in connection with business combination transactions	Other	View HTML 0001104659-23-012208.pdf 0001104659-23-012208.rtf
February 7, 2023	EFFECT	EFFECT	Other	View HTML 9999999995-23-000294.pdf 9999999995-23-000294.rtf 9999999995-23-000294.xls

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YS Biopharma Co., Ltd.

11 Firstfield Road Suite A
Gaithersburg, Maryland 20878 USA

Tel: +1 (301) 208 8823
Fax: +1 (301) 208 8827

bjinfo@yishengbio.com