It’s Time to Save Sinovac

Sinovac’s long-term value is at serious risk under the current Board, which has undermined the Company’s stability, defied the rule of law, and ignored the best interests of shareholders.

FELLOW SHAREHOLDERS: At the upcoming July 8 Special Meeting, choose a better path for Sinovac.

Support SAIF Partners IV L.P.’s (“SAIF”) slate of director nominees with the investor perspective and commitment to successfully unlock the Company’s full potential value.

We urge all shareholders to vote “FOR” Proposal 1 and 2 on the GOLD proxy card or GOLD voting instruction form to support the SAIF nominees and our Company’s future. Discard any white proxy card or white voting instruction form from the Activist Board.

To vote, please refer to the GOLD voting instruction form or GOLD proxy card to vote your shares electronically, and select “FOR” on all items and nominees. Voting online is quick and easy. If you have not received your GOLD voting instruction or proxy card, contact your broker immediately and check your mail or email inbox, or email Sodali at SAIF@info.sodali.com or call (800) 662-5200 (call Toll-free in North America)/(203) 658-9400 (outside of North America).

Prime Success, L.P. is a long-term, committed investor in Sinovac. We believe boardroom change is critical to restore effective corporate governance, rebuild trust and position Sinovac for sustainable, long-term growth.

Supporting SAIF's slate is essential for the future success of Sinovac

SAIF’s candidates, if elected, intend to take the following value-enhancing actions:

Oversee fair and equitable cash dividend distributionOversee fair and equitable cash dividend distribution

Oversee fair and equitable cash dividend distribution

Support announced dividend, advocate for future dividends and ensure value is rightfully returned to all shareholders in a timely manner.

Restore NASDAQ trading and stabilize operationsRestore NASDAQ trading and stabilize operations

Restore NASDAQ trading and stabilize operations

Resolve uncertainty created by the current Board and take steps to put the external auditor back on track.

Overhaul governance and rebuild investor trustOverhaul governance and rebuild investor trust

Overhaul governance and rebuild investor trust

Adhere to corporate governance best practices, promote greater transparency, and enhance board accountability.

Lay groundwork for sustainable long-term growthLay groundwork for sustainable long-term growth

Lay groundwork for sustainable long-term growth

Leverage candidates’ independence, background and expertise to support continued development and expansion.

The current Sinovac Board, in contrast, has led the Company down a value-destructive path: 

Prompted and prolonged the 2019 NASDAQ trading haltPrompted and prolonged the 2019 NASDAQ trading halt

Prompted and prolonged the 2019 NASDAQ trading halt

Took actions that significantly harmed the Company's growth.

Impeded dividend distribution and wasted resourcesImpeded dividend distribution and wasted resources

Impeded dividend distribution and wasted resources

Compelled Sinovac to defend against prolonged litigation with 1Globe Capital.

Weaponized shareholder capital allocationWeaponized shareholder capital allocation

Weaponized shareholder capital allocation

Authorized unjust and unlawful special dividend as part of attempt to invalidate shares of long-term investors.

Created significant operational uncertaintyCreated significant operational uncertainty

Created significant operational uncertainty

Announced intent to overturn prior Board decisions, prompting auditor resignation and management alienation.

Prioritized personal interest over fiduciary dutyPrioritized personal interest over fiduciary duty

Prioritized personal interest over fiduciary duty

Announced intent to void contractual obligations of the Company.

Appointed questionable directors via dubious processAppointed questionable directors via dubious process

Appointed questionable directors via dubious process

Took actions that eroded shareholder trust and undermined the Company’s governance.

Prime Success urges shareholders to wait for and read SAIF’s proxy materials before voting for the Special Meeting.

ADDITIONAL MATERIALS

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Letter to Sinovac Shareholders
Letter to Sinovac Shareholders
April 25, 2025
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Prime Success, L.P.
For Media Inquiries

Longacre Square Partners
advantech@longacresquare.com

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