Sinovac Comments on Unauthorized Use of Falsified Sinovac Hong Kong's Company Seal and Subsidiary Board Member Signatures

Comments on Unauthorized Use of Falsified Sinovac Hong Kong's Company Seal and Subsidiary Board Member Signatures

October 09, 2018 11:51 PM Eastern Daylight Time

BEIJING--(BUSINESS WIRE)--Sinovac Biotech Ltd. (NASDAQ: SVA)

("Sinovac" or the "Company"), became aware Monday October 8, 2018 that unauthorized changes have been made

to the Hong Kong Companies Registry for Sinovac Biotech (Hong Kong) Limited ("Sinovac HK") and that unauthorized changes

have been made to the Industry and Commerce Bureau of Beijing for Sinovac Biotech Co., Ltd. ("Sinovac Beijing").

Unknown individuals have used a falsified version of the company

seal of Sinovac HK and used unauthorized forgeries of the signatures of Mr. Weidong Yin and Ms. Nan Wang, Directors of Sinovac

HK, to submit false letters of resignation to the Hong Kong Companies Registry in an attempt to remove Mr. Weidong Yin and Ms.

Nan Wang from the Board and replace them with nominees of the Sinobioway Consortium, led by Sinobioway Biomedicine Co., Ltd. ("Sinobioway"),

a minority shareholder of Sinovac Beijing, and a group of Sinovac's shareholders led by 1Globe and OrbiMed (collectively,

the "Dissident Shareholders") who have repeatedly attempted to take control of Sinovac Biotech Co. and its subsidiaries

Additionally, without authorization on August 28, 2018, Aihua

Pan, a member of the Board of Sinovac Beijing, who was appointed by Sinobioway, held a purported Sinovac Beijing Board meeting.

At the meeting, Aihua Pan attempted to seize control of Sinovac Beijing by dismissing Mr. Weidong Yin, Ms. Nan Wang and Mr. Dawei

Mao from the Board and replacing them with nominees of Sinobioway and the Dissident Shareholders. Aihua Pan also attempted to dismiss

Mr. Yin from the General Manager position and appoint himself as General Manager. In addition, the meeting purported to amend the

company charter to change the authorized representative of Sinovac HK from Mr. Yin to Jianzeng Cao, a representative of Sinobioway

and the Dissident Shareholders. The Board resolutions of the purported meeting contain an unauthorized forgery of Director Yuk

As confirmed by Zhongtian Forensic Examination Center, which

issued an Examination Opinion, "Zhongtian Forensic 2018 Wenjianzi No. 263", dating back to April, 2018, Aihua Pan and

Sinobioway have been using Sinovac HK's forged company seal and an unauthorized forged signature of Mr. Weidong Yin to falsely

claim that Sinovac Beijing's business license, company seal, contract special seal, legal person seal, and finance seal had

been lost and are therefore invalid. Sinovac HK has reported these fraudulent actions to the public security of Haidian District,

Mr. Weidong Yin and Ms. Nan Wang remain appointed and authorized

directors of Sinovac HK; Mr. Weidong Yin, Ms. Nan Wang and Mr. Dawei Mao remain appointed and authorized directors of Sinovac Beijing.

The Board of Directors and management of publicly traded Sinovac

Biotech Ltd., which remain unchanged by the actions of Sinobioway and the Dissident Shareholders, are closely monitoring these

unauthorized actions purportedly taken at Sinovac HK and Sinovac Beijing and continue to execute their fiduciary duties to act

in the best interests of the Company and all shareholders as the Company moves forward in its mission to develop vaccines that

enhance health in China and around the world and create shareholder value. Furthermore, the Board of Directors and management of

Sinovac are vigorously defending the rights of all shareholders in all applicable courts.

The current members of the board of directors of Sinovac Biotech

Mr. Weidong Yin has served as our chairman, president,

chief executive officer and secretary since September 2003. He previously worked as a medical doctor in infectious disease at the

China Center for Disease Control and Prevention, Tangshan City, Hebei province. Mr. Yin has been dedicated to hepatitis research

for over 20 years and was instrumental in the development of Healive. In addition, Mr. Yin has been appointed as the principal

investigator by the Chinese Ministry of Science and Technology for many key governmental R&D programs such as Inactivated Hepatitis

A Vaccine R&D, Inactivated SARS Vaccine R&D and New Human Influenza Vaccine (H5N1) R&D. He is also the president of

Zhongguancun Listed Companies Association. He obtained his MBA from the National University of Singapore.

Mr. Simon Anderson has served as an independent

director of our company since July 2004. He is a member of our audit, compensation, and corporate governance and nominating committees.

Mr. Anderson's professional experience is as a Chartered Professional Accountant of British Columbia with over 30 years'

experience working as an executive officer and director of companies, including public companies listed on a number of North American

Stock exchanges. His experience includes nearly a decade of service as the Chief Financial Officer of IBC Advanced Alloys Corp.,

a leading advanced alloys company, where he continues to serve as a director. Mr. Anderson previously served for over five years

as a director of WEX Pharmaceuticals Inc. while it was a publicly listed biopharmaceutical company dedicated to the development

and manufacture of innovative drug products. Prior to these positions he spent eight years at MCSI Consulting Services, Inc., a

company that provides consulting expertise in the areas of regulatory compliance, exchange listings, securities valuation and financial

operations and nine years in business valuation with BDO Canada LLP, a member of the world's fifth largest accounting network.

In these roles and others, he has developed extensive experience in financing, mergers and acquisitions, corporate governance and

securities regulation practices. Mr. Anderson received his Bachelor of Commerce in Accounting and Management Information Systems

from the University of British Columbia.

Mr. Yuk Lam Lo has served as an independent director

of our company since March 2006. Mr. Lo is a member of the audit, compensation and corporate governance and nominating committees.

Currently Mr. Lo is serving as the Chairman of the Advisory Council for Food Safety of the Food and Health Bureau HKSAR, an Executive

Committee Member of the Chinese Manufacturers' Association of Hong Kong (CMA) and Chairman of the Education Committee of

CMA. Mr. Lo is also the Honorary Founding Chairman of Hong Kong Bio-Organization. In the educational area, Mr. Lo has been elected

an Honorary Fellow of the Hong Kong University of Science and Technology. He is an Honorary Chairman of Hong Kong Food Safety Association,

Adjunct Professor of the Chinese University of Hong Kong and Honorary Professor of several universities in China. Mr. Lo was heavily

involved in several committees of the HKSAR Government. He had been appointed as Director of the Hong Kong Applied R&D Fund

Co. Ltd., Chairman of the Biotechnology Committee of the Hong Kong Industry & Technology Development Council, and Chairman

of Biotechnology Projects Vetting Committee of the Innovation and Technology Fund, HKSAR. In China, Mr. Lo is a Member of Chinese

People's Political Consultative Conference in Jilin province, and a Consultant of the Centre for Disease Control and Prevention

of China. In the business sector, he is an Independent Director of Luye Pharma Group Limited (2186.HK) and CSPC Pharmaceutical

Group Limited (1093.HK).

Mr. Kenneth Lee is an independent director of Sinovac.

He has served on our board of directors since May 2011. In July 2012, the board appointed him as a member of the compensation committee

and corporate governance and nominating committee. Mr. Lee is a partner at SAIF Partners. SAIF Partners IV L.P. is currently the

largest shareholder of Sinovac. Mr. Lee has more than 20 years of experience across private equity investments, corporate finance,

and business development in China. He is a non-executive director on the boards of three Chinese portfolio companies publicly listed

on the stock exchanges in the United States and Hong Kong and a board director for four other private Chinese companies backed

by SAIF Partners. Mr. Lee is a graduate of Amherst College.

Mr. Meng Mei has served as an independent director

of our company since March 2012. Mr. Mei is the chairman of compensation committee, and member of the audit and corporate governance

and nominating committees. Mr. Mei founded TusPark, a science park established by Tsinghua University in 1994, to incubate high

growth companies. He has been the director of TusPark's development center since its inception. Mr. Mei is also the Chairman

of TusHoldings Co., Ltd., which is engaged in the development, construction, and management of TusPark and is providing services

to enterprises based in TusPark. TusHoldings Co., Ltd. is also involved in venture capital investments in China. Mr. Mei sits on

the judging expert panel of China's National Science & Technology Award. He has developed courses on entrepreneurship

and new venture formation as a Tsinghua University professor and an entrepreneur. Mr. Mei holds a bachelor's degree in automation

from Tsinghua University, PRC.

Mr. Shan Fu, Managing Partner at Vivo Capital since 2013,

joined Sinovac's Board of Directors. Prior to joining Vivo, Mr. Fu was Senior Managing Director in the Private Equity group

and the Chief Representative of Blackstone's Beijing Office. Additionally, Mr. Fu's qualifications include experience

in the Department of Foreign Investment in China's National Development and Reform Commission, the State Economic and Trade

Commission, the Office of Economic and Trade in State Council, and the Office of Production in State Council.

Sinovac Biotech Ltd. is a China-based biopharmaceutical Company

that focuses on the research, development, manufacturing and commercialization of vaccines that protect against human infectious

diseases. Sinovac's product portfolio includes vaccines against enterovirus71, or EV71, hepatitis A and B, seasonal influenza,

H5N1 pandemic influenza (avian flu), H1N1 influenza (swine flu), and mumps. Healive, the hepatitis A vaccine manufactured by the

Company has passed the assessment under WHO Prequalification procedures in 2017. The EV71 vaccine, an innovative vaccine developed

by Sinovac against hand foot and mouth disease caused by EV71, was commercialized in China in 2016. In 2009, Sinovac was the first

company worldwide to receive approval for its H1N1 influenza vaccine, which it has supplied to the Chinese Government's vaccination

campaign and stockpiling program. The Company is also the only supplier of the H5N1 pandemic influenza vaccine to the government

stockpiling program. The Company is developing a number of new products including a Sabin-strain inactivated polio vaccine, pneumococcal

polysaccharides vaccine, pneumococcal conjugate vaccine and varicella vaccine. Sinovac primarily sells its vaccines in China,

while also exploring growth opportunities in international markets. The Company has exported select vaccines to over 10 countries

in Asia and South America. For more information please refer to the Company's website at www.sinovacbio.com.

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