[Sinovac Reports Unaudited Fourth Quarter and Preliminary Full Year 2011 Financial Results - Conference call scheduled for Thursday, March 29, 2012 at 8:00 AM EDT - BEIJING, March 29, 2012 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (NASDAQ: SVA), a leading provider of biopharmaceutical products in China, announced today its unaudited fourth quarter and preliminary full year financial results for the period] [SINOVAC BIOTECH LTD. No. 39 Shangdi Xi Road Haidian District Beijing 100085, People’s Republic of China Form 20-F x Form 40-F ¨ SINOVAC BIOTECH LTD. 6-K 1 v308765_6k.htm 6-K]

[Sinovac Receives Nasdaq Deficiency Letter Regarding Audit Committee Requirement Press Release: Sinovac Biotech Co., Ltd. – Tue, Jan 24, 2012 4:05 PM EST BEIJING, Jan. 24, 2012 /PRNewswire-Asia/ — Sinovac Biotech Ltd. (Nasdaq: SVA - News), a leading provider of vaccines in China, today announced that it received a letter dated January 18, 2012 from The Nasdaq Stock Market. Based] [Sinovac Commences the Phase III Clinical Trial for its EV71 Vaccine Against Hand, Foot and Mouth Disease Press Release: Sinovac Biotech Ltd. – Tue, Jan 10, 2012 8:00 AM EST BEIJING , Jan. 10, 2012 /PRNewswire-Asia/ — Sinovac Biotech Ltd. (Nasdaq: SVA - News), a leading provider of biopharmaceutical products in China , announced today that the phase III clinical] [SINOVAC BIOTECH LTD. No. 39 Shangdi Xi Road Haidian District Beijing 100085, People’s Republic of China Form 20-F x Form 40-F ¨ SINOVAC BIOTECH LTD. 6-K 1 v301323_6k.htm FORM 6-K]

[Sinovac Announces Resignation of Chup Hung Mok from Board of Directors Press Release: Sinovac Biotech Ltd. – Wed, Jan 4, 2012 8:00 AM EST BEIJING , Jan. 4, 2012 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (Nasdaq: SVA - News), a leading provider of vaccines in China , today announced the resignation of Ms. Chup Hung Mok from its Board of Directors] [SINOVAC BIOTECH LTD. Weidong Yin Chairman and Chief Executive Officer]