Sinovac Biotech Ltd. elected four new individuals to its Board of Directors, namely Messrs. Guowei Wang, Hoi Fung Qiu, Jianzeng Cao, and Pengfei Li, effectively immediately at the February 6, 2018 annual meeting of shareholders. Effective immediately following the shareholders meeting, the company's Board is comprised of Messrs.

Guowei Wang, Hoi Fung Qiu, Jianzeng Cao, Pengfei Li, and Yuk Lam Lo, and Messrs. Weidong Yin, Kenneth Lee, Meng Mei and Simon Anderson are no longer authorized by the shareholders to act as directors of the company. Mr. Weidong Yin has been removed as the CEO of the company due to his bribery conducts.