Second Half and Full Year 2023 Financial Summary

• Sales for the six months ended December 31, 2023 were $307.9 million, compared to $280.5 million in the prior year period.
• Sales in 2023 were $448.3 million, compared to $1.5 billion in the prior year.
• The Company posted $119.9 million of net loss attributable to common shareholders, or a loss of $1.20 per basic and diluted share, in the six months ended December 31, 2023, compared to net loss attributable to common shareholders of $373.7 million, or a loss of $3.76 per basic and diluted share, in the prior year period.
• The Company posted $105.9 million of net loss attributable to common shareholders, or a loss of $1.06 per basic and diluted share in 2023, compared to net income attributable to common shareholders of $107.9 million, or $1.08 per basic and $1.00 per diluted share, in the prior year period.
• Mr. Weidong Yin, Chairman, President and CEO of SINOVAC, commented “In 2023, SINOVAC has gradually adjusted from the state of mass supply of COVID-19 vaccine against pandemic back to normal operational status. I am pleased to see that the top line of our regular products still maintained growth in the year of 2023. After experiencing three years of the COVID-19 pandemic, the world is still facing the threat of various infectious diseases in 2023. As a leading biopharmaceutical products provider in China, SINOVAC continues to invest additional resources in R&D and production of vaccines, and keeps exploring additional opportunities in a broader biopharmaceutical industry. It is great to see every progress of our pipeline products, such as the recent approval of 5-dose sIPV from National Medical Products Administration (NMPA) and the approval of clinical trial for reassortant hexavalent rotavirus vaccine. Meanwhile, we are maintaining a strong international presence by providing high quality vaccines and localized production outside of China.”

Business Updates

Hepatitis A Vaccine – Healive^®, the first and only WHO prequalified inactivated hepatitis A vaccine from China, is currently supplied both domestically and internationally. Healive^®’s performance in public tender market in China was further improved in 2023.

Influenza Vaccine – A new and state-of-the-art influenza vaccine production line started operations in Beijing. The plant, which complies with Chinese Good Manufacturing Practice guidelines and utilizes green production processes, enables automated production at scale that expands SINOVAC’s capacity to meet the growing global demand for high-quality influenza vaccines. SINOVAC’s influenza vaccines expand international market accessibility in 2023 by obtaining more overseas market approvals, such as in Pakistan and Chile. A study conducted recently in the Philippines and Chile demonstrated that the immunogenicity induced by SINOVAC’s quadrivalent influenza vaccine was non-inferior and the geometric mean titers were even higher in individuals aged 3 years and older, when compared with the control vaccine which was widely used.

Varicella Vaccine – SINOVAC’s live attenuated varicella vaccine, the first WHO prequalified Chinese varicella vaccine, was successfully supplied to Türkiye this year. The varicella vaccine was also registered in Lebanon and Kenya in 2023.

Hand Foot and Mouth Disease Vaccine – SINOVAC’s Enterovirus 71 (EV71) vaccine, Inlive^®, has already safeguarded millions of children in China. In 2023, SINOVAC has initiated phase I clinical trials of its bivalent enterovirus inactivated vaccine, which aims to protect against hand, foot and mouth disease (HFMD) caused by enterovirus 71 (EV71) and coxsackievirus 16 (CA16).

Strategic Developments - We achieved several milestones in the strategic development in 2023. In Türkiye, our first joint venture with a local partner has successfully completed construction of a vaccine production plant, and a GMP certificate was obtained from the Turkish Medicines and Medical Devices Agency. In Latin America, we participated in a tender issued by the government of Bogota, Colombia, for localizing human vaccine production, and we were successfully selected as the exclusive strategic partner with BogotáBio, a local vehicle for the localization project, which aims to build the first local human vaccine production facility with municipal partner in Colombia’s capital of Bogota. SINOVAC’s extensive expertise and experience in vaccine R&D and production, and its successful track record in establishing vaccine manufacturing facilities will play a pivotal role in the new venture. At the end of 2023, SINOVAC completed an investment in Synermore Biologics (Suzhou) Co., Ltd., a company which focuses on the development and production of monoclonal antibody drugs in the fields of infectious diseases, malignant tumors and autoimmune diseases. The investment marks a key step for SINOVAC entering into the novel antibody drugs field.

Unaudited Financial Results for the Second Half of 2023

Sales for the second half of 2023 were $307.9 million, compared to $280.5 million in the prior year period. The increase was mainly due to increased sales of our influenza vaccines.

Selling, general and administrative expenses in the second half of 2023 were $235.3 million, compared to $667.7 million in the prior year period. The decrease was mainly due to lower expenses incurred in the COVID-19 employee incentive plan which was established in 2022.

R&D expenses in the second half of 2023 were $193.4 million, compared to $257.7 million in the prior year period.

Net loss in the second half of 2023 was $228.3 million, compared to net loss of $702.3 million in the prior year period.

Net loss attributable to common shareholders was $119.9 million, or a loss of $1.20 per basic and diluted share, in the second half of 2023, compared to a net loss attributable to common shareholders of $373.7 million, or a loss of $3.76 per basic and diluted share, in the prior year period.

As the Company announced on February 22, 2019, the Company’s board of directors determined that certain shareholders became acquiring persons, as defined in the Company’s rights agreement (“Rights Agreement”), under which a trigger event occurred. As a result, the Company issued new common and preferred shares of SINOVAC. Without the effect of implementing the Rights Agreement and newly-issued common and preferred shares, basic and diluted loss per share for the second half of 2023 would be $1.63.

Non-GAAP adjusted EBITDA was a loss of $111.6 million in the second half of 2023, compared to a loss of $998.7 million in the prior year period. Non-GAAP net loss was $183.0 million in the second half of 2023, compared to a net loss of $805.8 million in the prior year period. Non-GAAP diluted loss per share in the second half of 2023 was $0.93 compared to a loss of $4.38 per share in the prior year period. Non-GAAP diluted loss per share in the second half of 2023, excluding the implementation of the Rights Agreement and the newly-issued common and preferred shares, would be $1.29. Reconciliations of non-GAAP measures to the nearest comparable GAAP measures are included at the end of this earnings announcement.

The Company’s financial statements for the second half of 2023 are prepared and presented in accordance with U.S. GAAP. However, they have not been audited or reviewed by the Company’s independent registered accounting firm.

Financial Results for the Twelve Months Ended December 31, 2023

Sales in 2023 were $448.3 million, a decrease from $1.5 billion in the prior year. The decrease was due to decreased sales of CoronaVac^®.

Selling, general and administrative expenses in 2023 were $466.3 million, compared to $823.5 million in the prior year. The decrease was mainly due to lower expenses incurred in the COVID-19 employee incentive plan which was established in 2022.

R&D expenses in 2023 were $344.5 million, compared to $442.1 million in the prior year. The Company continued to invest in the advancement of pipeline vaccines in 2023.

Net loss in 2023 was $258.4 million, compared to a net income of $88.1 million in the prior year. Net income decreased primarily due to decreased sales.

Net loss attributable to common shareholders was $105.9 million, or a loss of $1.06 per basic and diluted share, compared to net income attributable to common shareholders of $107.9 million, or $1.08 per basic and $1.00 per diluted share, in the prior year.

Excluding the implementation of the Rights Agreement, as described above, and the newly-issued common and preferred shares, basic and diluted loss per share for 2023 would be $1.39.

Non-GAAP adjusted EBITDA was a loss of $458.3 million in 2023, compared to a loss of $309.5 million in the prior year. Non-GAAP net loss in 2023 was $303.9 million, compared to a net loss of $177.0 million in the prior year. Non-GAAP diluted loss per share in 2023 was $1.32, compared to a loss of $0.37 per share in the prior year. Non-GAAP diluted loss per share in 2023, excluding the implementation of the Rights Agreement and the newly-issued common and preferred shares, would be $1.84 per share. Reconciliations of non-GAAP measures to the nearest comparable GAAP measures are included at the end of this earnings announcement.

As of December 31, 2023, cash and cash equivalents and restricted cash totaled $1.3 billion, compared to $4.3 billion as of December 31, 2022. In 2023, net cash provided by operating activities was $104.0 million, net cash used in investing activities was $2.9 billion, and net cash used in financing activities was $76.1 million. As of December 31, 2023, the Company had $76.1 million in bank loans due within one year. The Company expects that its current cash position will be able to support its operations for at least the next 12 months.

Legal Proceedings

As previously disclosed by the Company, on March 13, 2018, 1Globe Capital LLC (“1Globe”) filed a complaint against the Company in the Antigua Court. The trial of the matter took place from December 3 to 5, 2018. On December 19, 2018, the Antigua judge handed down his judgment (the “Antigua Judgment”), finding the Company fully in favor, dismissing 1Globe’s claim and declaring the Rights Agreement was validly adopted as a matter of Antigua law. On January 29, 2019, 1Globe filed a Notice of Appeal against the Antigua Judgment. On March 4, 2019, 1Globe filed an application for urgent interim relief, seeking an injunction to prevent the Company from continuing to implement its Rights Agreement until the resolution of the appeal. This application was heard on April 4, 2019, at which the Court of Appeal issued an order restraining the Company from operating the Rights Agreement in any way that affects 1Globe’s rights or shareholding or otherwise distributing the exchange shares (the “Exchange Shares”) to the Company’s shareholders who did not trigger the Rights Plan until after the determination of the appeal (the “Exchange Shares”). 1Globe’s appeal against the Antigua Judgment was heard on September 18, 2019, and the appeal decision was announced by the Eastern Caribbean Supreme Court, Court of Appeal (the “Court of Appeal”) on December 9, 2021, upholding the Antigua Judgment in each point. 1Globe applied for leave to appeal to the Judicial Committee of the Privy Council (the “Privy Council”), and the hearing of the application was held on February 24, 2022, in which the Court of Appeal granted 1Globe leave to appeal to the Privy Council on certain grounds, although not including the challenge to the validity of the Rights Agreement. On April 19, 2022, 1Globe renewed its application directly to the Privy Council for leave to appeal on its ground of appeal concerning the validity of the Rights Agreement. The final substantive hearing before the Privy Council is listed for July 10 to 11, 2024. The judgment will be reserved and delivered in writing at a later date. The appeal outcome is therefore pending.

As previously disclosed, on March 5, 2018, the Company filed a lawsuit in the Court of Chancery of the State of Delaware, seeking a determination on whether 1Globe, the Chiang Li Family, OrbiMed Advisors, LLC and certain other shareholders of the Company had triggered the Rights Agreement. On April 12, 2018, 1Globe filed an amended answer to the Company’s complaint, counterclaims and a third-party complaint against the Company and Mr. Weidong Yin, alleging, among other allegations, that the Rights Agreement is not valid. On March 6, 2019, the Delaware Chancery Court entered a status quo order, providing that the Company not distribute any of the Exchange Shares to the Company’s shareholders who did not trigger the Rights Plan until the final disposition of the pending Delaware litigation or further order of the Court. On April 8, 2019, the Delaware Chancery Court stated that the Delaware litigation was pending the final outcome of 1Globe’s appeal of the Antigua Judgment.

Separately, Heng Ren Investments LP (“Heng Ren”) filed suits against SINOVAC and Weidong Yin on May 31, 2019 in Massachusetts state court for the alleged breach of fiduciary duties and wrongful equity dilution. SINOVAC moved the matter from the state court to the United States District Court for the District of Massachusetts. Heng Ren alleged that Mr. Yin breached fiduciary duties owed to minority shareholders, that SINOVAC aided and abetted breaches of fiduciary duties and that both SINOVAC and Mr. Yin engaged in wrongful equity dilution. Heng Ren requested damages, attorney fees, and prejudgment interest. In July 2021, SINOVAC moved to dismiss Heng Ren’s amended complaint in the federal court in Massachusetts. On March 4, 2022, the court granted the motion as to the breach of fiduciary duty claims and denied the motion as to the wrongful equity dilution claim and denied reconsideration of its decision on the motion. SINOVAC has answered the complaint. Pursuant to the current schedule, the close of fact discovery is April 26, 2024, the deadline for initial summary judgment motions is August 23, 2024, and, should the case not be resolved through settlement or at summary judgment, trial is set to begin on December 9, 2024.

On September 6, 2023, MW Gestion, an institutional asset manager based in France, filed a class action complaint on behalf of all SINOVAC shareholders against SINOVAC; Weidong Yin; and other managers and directors of SINOVAC, including Nan Wang, Simon Anderson, Yuk Lam Lo, Kenneth Lee, Meng Mei, and Shan Fu (the “Individual Defendants” and collectively with SINOVAC the “SINOVAC Defendants”); and Wilmington Trust National Association. MW Gestion alleges breach of contract, breach of fiduciary duty, and wrongful dilution claims against the SINOVAC Defendants, as well as aiding and abetting breach of contract and breach of fiduciary duty against the Individual Defendants. MW Gestion’s claims stem from a private investment in public equity transaction on July 2, 2018, and SINOVAC’s implementation of its Rights Agreement on February 22, 2019. SINOVAC and certain other defendants filed a motion to dismiss all claims on November 20, 2023, and the motion was fully briefed as of February 27, 2024.

Status of Exchange Shares and Trading in the Company’s Shares

As a result of the pending legal proceedings described above, the Exchange Shares are expected to remain in a trust for the benefit of the Company’s shareholders who did not trigger the Rights Plan until, at least, the conclusion of the appeal against the Antigua Judgment and the final disposition of the Delaware litigation or further order of the Delaware Chancery Court. The Exchange Shares remain issued and outstanding. The Nasdaq Stock Market LLC implemented a halt on trading of the Company’s common shares at the time the Exchange Shares were issued to the trust. The Company is currently unable to estimate when trading will resume, or if Nasdaq will take any additional action in regard to trading of the Company’s common shares.

About SINOVAC

Sinovac Biotech Ltd. (SINOVAC) is a China-based biopharmaceutical company that focuses on the R&D, manufacturing, and commercialization of vaccines 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 new vaccine R&D, with more combination vaccine products in its pipeline, and constantly explores global market opportunities. SINOVAC plans to conduct more extensive and in-depth trade and cooperation with additional countries, and business and industry organizations.

For more information, please visit the Company’s website at www.sinovac.com.

Safe Harbor Statement

This press release may include certain statements that are not descriptions of historical facts, but are forward-looking statements. These statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates” and similar statements. Forward-looking statements involve risks, uncertainties and other factors that could cause actual results to differ materially from those contained in any such statements. In particular, the outcome of any litigation is uncertain, and the Company cannot predict the potential results of the litigation it filed or filed against it by others. Additionally, the triggering of a shareholder rights plan is nearly unprecedented, and the Company cannot predict the impact on the Company or its stock price as a result of the trigger of the rights plan.

Non-GAAP Financial Measures

To supplement its consolidated financial statements, which are prepared and presented in accordance with GAAP, SINOVAC uses the following non-GAAP financial measures: non-GAAP adjusted EBITDA, non-GAAP net income (loss) and non-GAAP diluted earnings (loss) per share. For more information on these non-GAAP financial measures, please refer to the table captioned “Reconciliations of non-GAAP Measures to the Nearest Comparable GAAP Measures” in this results announcement.

SINOVAC believes that non-GAAP adjusted EBITDA, non-GAAP net income (loss) and non-GAAP diluted earnings (loss) per share help identify underlying trends in its business that could otherwise be distorted by the effect of certain income or expenses that SINOVAC includes in net income and diluted earnings (loss) per share. SINOVAC believes that non-GAAP adjusted EBITDA, non-GAAP net income (loss) and non-GAAP diluted earnings (loss) per share provide useful information about its core operating results, enhance the overall understanding of its past performance and future prospects and allow for greater visibility with respect to key metrics used by our management in its financial and operational decision-making. Non-GAAP adjusted EBITDA, non-GAAP net income (loss) and non-GAAP diluted earnings (loss) per share should not be considered in isolation or construed as an alternative to income from operations, net income (loss), diluted earnings (loss) per share, or any other measure of performance or as an indicator of SINOVAC’s operating performance. These non-GAAP financial measures presented here may not be comparable to similarly titled measures presented by other companies. Other companies may calculate similarly titled measures differently, limiting their usefulness as comparative measures to our data.

Non-GAAP adjusted EBITDA represents net income (loss) and excludes interest and financing expenses, interest income, net other income (expenses) and income tax benefit (expenses), and certain non-cash expenses, consisting of share-based compensation expenses, amortization and depreciation that SINOVAC does not believe are reflective of the core operating performance during the periods presented.

Non-GAAP net income (loss) represents net income (loss) before share-based compensation expenses and foreign exchange gain or loss.

Non-GAAP diluted earnings (loss) per share represents non-GAAP net income (loss) attributable to common shareholders divided by the weighted average number of shares outstanding during the periods on a diluted basis, including accounting for the effect of the assumed conversion of options.

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