SINOVAC BIOTECH LTD.
( Incorporated in Antigua and Barbuda with limited liability)
( NASDAQ Ticker: SVA)
FORM OF PROXY FOR 20 10 ANNUAL SHAREHOLDERS MEETING
(AND ANY ADJOURNMENT THEREOF)
I/We, of , being
the registered holder of common shares (Note 1) , par value US$0.001 per share, of
Sinovac Biotech Ltd. (the “Company”) hereby appoint the Chairman of the 20 10 Annual Shareholders Meeting
(Note 2) or of
as my/our proxy to
attend and act for me/us at the 20 10 Annual Shareholders meeting of the Company to be held on July 1 5 , 20
10 at 9:00 A.M. Beijing time in Beijing at No. 39 Shangdi Xi Road, Haidian District, Beijing 100085, People’s
Republic of China, and at the corresponding time in Antigua at No. 6 Temple Street, St. John’s, Antigua and at
any adjournment thereof, and to vote for me/us as indicated below, or if no such indication is given, as my/our
proxy thinks fit.
1 Please insert the number of shares registered in your name(s) to which this proxy relates. If no number is
inserted, this form of proxy will be deemed to relate to all the shares in the Company registered in your name
2 If any proxy other than the Chairman is preferred, strike out the words “ the Chairman of the Annual
General Meeting or ” and insert the name and address of the proxy desired in the space provided. ANY
ALTERATION MADE TO THIS FORM OF PROXY MUST BE INITIALED BY THE PERSON
(S) WHO SIGN(S) IT .
3 IMPORTANT: IF YOU WISH TO VOTE FOR THE RESOLUTION, TICK