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SINOVAC BIOTECH LIMITED PRESS RELEASE Antigua Court Makes Interim Order Giving Board Control of the Company until the Trial of the Disputed 2025 Shareholder Meeting BEIJING -- (BUSINESS WIRE) -- Sinovac Biotech Ltd. (NAS

Key Takeaway: Sinovac Biotech Ltd. announced that the Antigua High Court has granted control of the company’s board to its current members until a trial regarding a disputed shareholder meeting takes place in late April or early May 2026. The decision follows a hearing related to the composition of the board during an ongoing dispute. In a recent board meeting, the directors reaffirmed their commitment to enhancing shareholder value and stability while addressing current challenges, including restoring NASDAQ trading for their shares. Sinovac continues to focus on its mission to supply vaccines and improve health outcomes globally.

Market Sentiment Analysis

POSITIVE FACTORS

  • The Antigua High Court has granted control of the board to current directors until the trial in 2026.
  • The Board expressed commitment to shareholder value creation and operational stability.
  • Sinovac has a strong pipeline of vaccines and is focused on combating infectious diseases.

CONCERNS & RISKS

  • The ongoing dispute over the composition of the Board could create instability.
  • The company is currently facing challenges in restoring trading of its shares on NASDAQ.
  • The shareholders are divided, leading to potential conflict and uncertainty until the trial.

Full Press Release Details

SINOVAC BIOTECH LIMITED PRESS RELEASE
Antigua Court Makes Interim Order Giving Board
Control of the Company until the Trial of the Disputed 2025 Shareholder Meeting
BEIJING -- (BUSINESS WIRE) -- Sinovac Biotech
Ltd. (NASDAQ: SVA) (SINOVAC or the Company), a leading provider of biopharmaceutical products in China,
today announced that the Antigua High Court has ordered that the directors Mr. Simon Anderson, Mr. Shan Fu, Mr. Shuge Jiao,
Mr. Yuk Lam Lo, Mr. Yumin Qiu, Mr. Yu Wang, Mr. Andrew Y. Yan and Mr. Yin Weidong (collectively, the Board),
will comprise the Board of the Company until the trial listed in late April/early May 2026.
The Antigua High Court decision arises from a
hearing that took place on 27 October 2025, at which applicants SAIF Partners IV L.P., OrbiMed Partners Master Fund Limited and 1Globe
Capital LLC each sought injunctions to confirm the composition of their respective favoured Boards, pending determination of a dispute
over the outcome of the Company's Special Shareholders Meeting on 8 July 2025 (the SSM Dispute).
The hearing of the SSM Dispute has been scheduled
to take place in the Antigua High Court in late April/early May 2026, with judgment to be delivered by the Court thereafter.
A Board meeting was held on 17 December 2025 to
reiterate its unwavering commitment to shareholder value creation, to work diligently with the management and the advisors of the Company,
to make efforts to restore trading of the Company's shares on NASDAQ, to explore opportunities to properly and legally resolve the
Company's ongoing disputes, and to take all necessary steps, including to facilitate to reach agreements among all parties, to ensure
the stable operations of the Company and to create greater value for shareholders through cooperation.
Mr. Andrew Y. Yan, Chairman of the Board of SINOVAC,
stated, "The current Board is committed to the long-term and sustainable development of the Company. The Board and its Audit Committee
will collaborate closely with the auditors to complete audit. The Board trusts and supports the CEO and management team in continuing
to implement the Company's current development strategy, maintaining operational stability, continuously enhancing shareholder value
through sustained business growth, and collaboratively promoting the comprehensive development of the Company."
Sinovac Biotech Ltd. (SINOVAC) is a China-based
global biopharmaceutical company, with a mission of "supply vaccines to eliminate human diseases", the company specializes
in the research, development, manufacturing and commercialization of vaccines and related biological products that protect against human
infectious diseases.
The company's diversified portfolio includes
vaccines for influenza, viral hepatitis, varicella, Hand-Foot-Mouth disease (HFMD), poliomyelitis, pneumococcal disease, etc., of which
3 vaccines have been prequalified by WHO, including inactivated hepatitis A vaccine Healive , Sabin-strain inactivated polio vaccine
(sIPV), and varicella vaccine.
SINOVAC has a leading edge in developing vaccines
to combat infectious disease outbreaks and was among the first to initiate R&D during major public health emergencies, including SARS,
H5N1, H1N1, and COVID-19. The company developed the world's first inactivated SARS vaccine (Phase I completed), China's first
H5N1 influenza vaccine (Paneflu ), the world's first H1N1 influenza vaccine (Panflu.1 ), and CoronaVac , the most widely
used inactivated COVID-19 vaccine globally.
Beyond its marketed portfolio, the company is
advancing a robust pipeline that includes combination vaccines, recombinant protein vaccines and next-generation platforms such as mRNA
technologies and antibodies.
With a long-standing commitment to innovation
and global health, SINOVAC is expanding its global footprint by strengthening partnerships with research institutions, international organizations,
and local partners. Through broader market presence, technological cooperation, and localized production, the company aims to accelerate
vaccine development and supply, enhance regional access to high-quality products, and better address unmet medical needs while improving
preparedness for future pandemics.
Safe Harbor Statement
This announcement contains forward-looking statements
within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and as defined in the U.S. Private Securities
Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as "may," "will,"
"expect," "anticipate," "aim," "estimate," "intend," "plan," "believe,"
"potential," "continue," "is/are likely to" or other similar expressions. Such statements are based
upon current expectations and current market and operating conditions and relate to events that involve known or unknown risks, uncertainties
and other factors, all of which are difficult to predict and many of which are beyond the Company's or Board's control, which
may cause actual results, performance or achievements to differ materially from those in the forward-looking statements. Further information
regarding these and other risks, uncertainties or factors is included in the Company's filings with the U.S. Securities and
Exchange Commission. The Company and Board do not undertake any obligation to update any forward-looking statement as a result of new
information, future events or otherwise, except as required under law.

Frequently Asked Questions

What did the Antigua High Court order regarding Sinovac's Board?

The court ordered that the current Board will maintain control until April/May 2026.

When is the trial for the SSM Dispute scheduled?

The trial for the SSM Dispute is set for late April or early May 2026.

What is Sinovac's mission in biopharmaceuticals?

Sinovac aims to supply vaccines to eliminate human diseases.

Which vaccines has Sinovac developed?

Sinovac has developed vaccines for influenza, polio, and COVID-19, among others.

How is Sinovac expanding its global presence?

Sinovac is enhancing partnerships to accelerate vaccine development and supply.

Last updated: Dec 17, 2025