SAIF Partners IV L.P. - 15 Dec 2025 SCHEDULE 13D/A Report for SINOVAC BIOTECH LTD. Common Shares, par value US$0.001 per share (SVA)

Reporting Managers (3)

Name	Ownership	Shares Owned	sole voting power	Signature	Title	CIK
SAIF Partners IV L.P.	15%	10,780,820	10,780,820	/s/Andrew Y Yan	Director of SAIF IV GP Capital Ltd., which is the General Partner of SAIF IV GP, L.P., which is the General Partner of SAIF Partners IV L.P.	0001472789
SAIF IV GP, L.P.	15%	10,780,820	10,780,820	/s/Andrew Y Yan	Director of SAIF IV GP Capital Ltd., which is the General Partner of SAIF IV GP, L.P.
SAIF IV GP Capital Ltd.	15%	10,780,820	10,780,820	/s/Andrew Y Yan	Director of SAIF IV GP Capital Ltd.