UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR
15d-16 UNDER
THE SECURITIES EXCHANGE ACT
OF 1934
For the month of February 2024
Commission
File Number: 001-32371
SINOVAC
BIOTECH LTD.
No. 39 Shangdi Xi Road
Haidian District
Beijing 100085, People’s
Republic of China
(Address of principal executive
offices)
Indicate by check mark whether the registrant files
or will file annual reports under cover of Form 20-F or Form 40-F:
Form 20-F x Form 40-F ¨
Indicate by check mark if the registrant is submitting
the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ¨
Indicate by check mark if the registrant is submitting
the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ¨
CONTENTS
Explanatory Note
On February 21, 2024, Sinovac Biotech Ltd. (the “Company”)
entered into a fifth amendment (the “Fifth Amendment”) to the Amended and Restated Rights Agreement, dated as of February 22,
2019 (the “Amended and Restated Rights Agreement”), as amended by the Amendment to the Amended and Restated Rights Agreement
dated as of February 19, 2020 (the “Amendment to Amended and Restated Rights Agreement”), by the Second Amendment to
the Amended and Restated Rights Agreement dated as of February 21, 2021 (the “Second Amendment to Amended and Restated Rights
Agreement), by the Third Amendment to the Amended and Restated Rights Agreement dated as of February 21, 2022 (the “Third Amendment
to Amended and Restated Rights Agreement), and by the Fourth Amendment to the Amended and Restated Rights Agreement dated as of February 21,
2023 (the “Fourth Amendment to Amended and Restated Rights Agreement), between the Company and Pacific Stock Transfer Company, as
Rights Agent, to extend the expiration date of the rights contained therein from February 22, 2024 to February 22, 2025.
The foregoing
summary of the Fourth Amendment is qualified in its entirety by reference to the full text of the Fifth Amendment, which is filed
as Exhibit 4.1 hereto and is incorporated herein by reference. A copy of the Fourth Amendment to Amended and Restated Rights Agreement
and a summary of its material terms were filed with the SEC on Form 6-K on February 22, 2023 (incorporated herein by reference
by Exhibit 4.2). A copy of the Third Amendment to Amended and Restated Rights Agreement and a summary of its material terms were
filed with the SEC on Form 6-K on February 22, 2022 (incorporated herein by reference by Exhibit 4.3). A copy of the Second
Amendment to Amended and Restated Rights Agreement and a summary of its material terms were filed with the SEC on Form 6-K on February 22, 2021 (incorporated herein by reference by Exhibit 4.4). A copy of the Amendment to Amended and Restated Rights Agreement and a summary
of its material terms were filed with the SEC on Form 6-K on February 21, 2020 (incorporated herein by reference by Exhibit 4.5).
A copy of the Amended and Restated Rights Agreement and a summary of its material terms were filed with the Securities and Exchange Commission
on Form 6-K on February 22, 2019 (incorporated herein by reference by Exhibit 4.6).
Incorporation by Reference
The summary of the Fifth Amendment above and Exhibit 4.1 attached
hereto are hereby incorporated by reference into our registration statements on Form S-8 filed with the Securities and Exchange Commission
on September 10, 2009 (File No. 333-161827) and Form S-8 filed with the Securities and Exchange Commission on September 4,
2013 (File No. 333-190980).
SIGNATURE
Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
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SINOVAC BIOTECH LTD. |
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By: |
/s/ Nan Wang |
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Name: |
Nan Wang |
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Title: |
Chief Financial Officer |
Date: February 21, 2024
Exhibit Index
Exhibit 4.1 |
Fifth Amendment
to Amended and Restated Rights Agreement dated as of February 21, 2024 between Sinovac Biotech Ltd. and Pacific Stock Transfer
Company, as Rights Agent |
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Exhibit 4.2 |
Fourth Amendment to Amended
and Restated Rights Agreement dated as of February 21, 2023 between Sinovac Biotech Ltd. and Pacific Stock Transfer Company,
as Rights Agent (incorporated by reference to Exhibit 4.1 of the Report on Form 6-K dated February 22, 2023 of Sinovac
Biotech Ltd.) |
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Exhibit 4.3 |
Third Amendment to Amended and
Restated Rights Agreement dated as of February 21, 2022 between Sinovac Biotech Ltd. and Pacific Stock Transfer Company, as
Rights Agent (incorporated by reference to Exhibit 4.1 of the Report on Form 6-K dated February 22, 2022 of Sinovac
Biotech Ltd.) |
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Exhibit 4.4 |
Second Amendment to Amended
and Restated Rights Agreement dated as of February 21, 2021 between Sinovac Biotech Ltd. and Pacific Stock Transfer Company,
as Rights Agent (incorporated by reference to Exhibit 4.1 of the Report on Form 6-K dated February 22, 2021 of Sinovac
Biotech Ltd.) |
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Exhibit 4.5 |
Amendment to Amended and Restated
Rights Agreement, dated as of February 19, 2020, between Sinovac Biotech Ltd. and Pacific Stock Transfer Company, as Rights
Agent (incorporated by reference to Exhibit 4.1 of the Report on Form 6-K dated February 21, 2020 of Sinovac Biotech
Ltd.) |
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Exhibit 4.6 |
Amended and Restated Rights
Agreement, dated as of February 22, 2019, between Sinovac Biotech Ltd. and Pacific Stock Transfer Company, as Rights Agent,
which includes the Form of Certificate of Designations of Series C Junior Participating Preferred Shares as Exhibit A,
the Form of Right Certificate as Exhibit B and the Summary of Rights to Purchase Preferred Shares as Exhibit C (incorporated
by reference to Exhibit 99.6 of the Report on Form 6-K dated February 22, 2019 of Sinovac Biotech Ltd.) |
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Exhibit 99.1 |
Press Release |
Exhibit 4.1
SINOVAC BIOTECH LTD.
and
PACIFIC STOCK TRANSFER COMPANY
as Rights Agent
FIFTH AMENDMENT
TO
AMENDED AND RESTATED RIGHTS AGREEMENT
Effective as of February 21, 2024
This Fourth Amendment (this “Amendment”)
to the Amended and Restated Rights Agreement (as defined below), is between Sinovac Biotech Ltd., an Antigua and Barbuda company (the
“Company”), and Pacific Stock Transfer Company (the “Rights Agent”).
WHEREAS, the Company and the Rights Agent have
heretofore executed and entered into the Amended and Restated Rights Agreement dated as of February 22, 2019 (the “Amended
and Restated Rights Agreement”), as amended by the Amendment to the Amended and Restated Rights Agreement, dated as of February 19,
2020, by the Second Amendment to the Amended and Restated Rights Agreement, dated as of February 21, 2021, by the Third Amendment
to the Amended and Restated Rights Agreement, dated as of February 21, 2022, and by the Fourth Amendment to the Amended and Restated
Rights Agreement, dated as of February 21, 2023, between the Company and the Rights Agent;
WHEREAS, the Amended and Restated Rights Agreement,
under its current terms, will expire on the close of business on February 22, 2024;
WHEREAS, pursuant to Section 26 of the Amended
and Restated Rights Agreement, the Company and the Rights Agent may from time to time supplement or amend any provision of the Amended
and Restated Rights Agreement in accordance with the provisions of Section 26 thereof;
WHEREAS, the Board of Directors of the Company
has determined that it is in the best interests of the Company and the holders of the Rights to amend the Amended and Restated Rights
Agreement as provided herein; and
WHEREAS, all acts and things necessary to make
this Amendment a valid agreement according to its terms have been done and performed, and the execution and delivery of this Amendment
by the Company and the Rights Agent have been in all respects authorized by the Company and the Rights Agent.
NOW, THEREFORE, in consideration of the foregoing
and mutual agreements set forth herein, the Company and the Rights Agent agree as follows:
| 1.1 | Section 7.1 of the Amended and Restated Rights Agreement is amended to replace the reference to “February 22, 2024”
with “February 22, 2025”. |
| 1.2 | All references to the date of “February 22, 2024” in Exhibit B (the Form of Right Certificate) and Exhibit C
(the Summary of Rights to Purchase Preferred Shares) to the Amended and Restated Rights Agreement shall hereby be changed to “February 22,
2025”. |
| 2. | Capitalized Terms. Capitalized terms used herein but not defined shall have the meanings given to them in the Amended and Restated
Rights Agreement. |
| 3. | Effect of Amendment. Except as expressly amended hereby, the Amended and Restated Rights Agreement shall remain in full force
and effect in accordance with its terms. |
| 4. | Benefits of Amendment. Nothing in this Amendment shall be construed to give to any Person or corporation other than the Company,
the Rights Agent and the registered holders of the Right Certificates (and, prior to the Distribution Date, the Common Shares) any legal
or equitable right, remedy or claim under this Amendment; but this Amendment shall be for the sole and exclusive benefit of the Company,
the Rights Agent and the registered holders of the Right Certificates (and, prior to the Distribution Date, the Common Shares). |
| 5. | Severability. If any term, provision, covenant or restriction of this Amendment is held by a court of competent jurisdiction
or other authority to be invalid, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions of this Amendment
shall remain in full force and effect and shall in no way be affected, impaired or invalidated. The parties hereto further agree to replace
such invalid, void or unenforceable provision of this Amendment with a valid, legal and enforceable provision that carries out the parties’
intentions to the greatest lawful extent under this Amendment. |
| 6. | Governing Law. This Amendment shall be deemed to be a contract made under the internal laws of the State of Delaware and for
all purposes shall be governed by and construed in accordance with the laws of such State applicable to contracts to be made and performed
entirely within such State. |
| 7. | Counterparts. This Amendment may be executed in any number of counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument. A signature to this
Amendment transmitted electronically shall have the same authority, effect, and enforceability as an original signature. |
| 8. | Descriptive Headings. Descriptive headings of the several Sections of this Amendment are inserted for convenience only and
shall not control or affect the meaning or construction of any of the provisions hereof. |
[Signature page follows.]
IN WITNESS WHEREOF, the parties hereto have caused
this Amendment to the Amended and Restated Rights Agreement to be duly executed, as of the day and year first above written.
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SINOVAC
BIOTECH LTD. |
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By: |
/s/
YIN WEIDONG |
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Name: YIN
WEIDONG |
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Title: Chairman, President&
CEO |
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PACIFIC
STOCK TRANSFER COMPANY, |
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as Rights Agent |
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By: |
/s/
JOSLYN G. CLAIBORNE |
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Name: JOSLYN
G. CLAIBORNE |
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Title: Managing Director |
[Signature Page to the Fifth Amendment to
Amended and Restated Rights Agreement]
Exhibit 99.1
Sinovac Amends Shareholder Rights Plan
BEIJING, China, February 21, 2024 /Business Wire/ -- Sinovac
Biotech Ltd. (“Sinovac” or the “Company”) (NASDAQ: SVA), a leading provider of biopharmaceutical products in
China, today announced that its board of directors has amended its shareholder rights plan. The amendment extends the expiration date
of the plan from February 22, 2024 to February 22, 2025.
About SINOVAC
Sinovac Biotech Ltd. (SINOVAC) is a China-based biopharmaceutical
company that focuses on the R&D, manufacturing, and commercialization of biomedical products that protect against human infectious
diseases.
SINOVAC’s product portfolio includes vaccines against COVID-19,
enterovirus 71 (EV71) infected hand-foot-mouth disease (HFMD), hepatitis A, varicella, influenza, poliomyelitis, pneumococcal disease,
mumps, etc.
The COVID-19 vaccine, CoronaVac®, has been approved for use in
more than 60 countries and regions worldwide. The hepatitis A vaccine, Healive®, passed WHO prequalification requirements in 2017.
The EV71 vaccine, Inlive®, is an innovative vaccine under "Category 1 Preventative Biological Products" and commercialized
in China in 2016. In 2022, SINOVAC’s Sabin-strain inactivated polio vaccine (sIPV) and varicella vaccine were prequalified by the
WHO.
SINOVAC was the first company to be granted approval for its H1N1
influenza vaccine Panflu.1®, which has supplied the Chinese government's vaccination campaign and stockpiling program. The Company
is also the only supplier of the H5N1 pandemic influenza vaccine, Panflu®, to the Chinese government stockpiling program.
SINOVAC continually dedicates itself to pipeline development including
but not limited to new technology, new vaccines as well as other biomedical products. We will constantly explore global opportunities
of strategic expansion.
For more
information, please visit the Company’s website at www.sinovac.com.
Contacts
Sinovac Biotech Ltd.
Helen Yang
Tel: +86-10-8279 9720
Email: ir@sinovac.com
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