Your Vote is Important

How to Vote

Your vote is critical to SINOVAC's future.

We urge you to keep SINOVAC's Board in place and vote on the WHITE proxy card "AGAINST" Proposal 1 to remove the current Board and "AGAINST" Proposal 2 to appoint the Reconstituted Imposter Former Board Slate. Your vote is critical to ensuring that SINOVAC remains on the path to stability, growth and value creation for all shareholders.

DISCARD any items you received asking you to vote for the Reconstituted Imposter Former Board Slate. If you have already voted for the Reconstituted Imposter Former Board Slate, you can subsequently revoke it by using the WHITE proxy card or WHITE voting instruction form to vote. Only your latest-dated vote will count!

Online

Locate your control number on your WHITE proxy card, visit the website listed and follow the instructions.

Phone

Dial the 24/7 toll-free telephone number shown on your WHITE proxy card and follow the instructions.

Mail

Mark, sign and date your WHITE proxy card and return it in the pre-paid envelope provided.

QR Code

Scan the QR code on your proxy material with your mobile device and follow the instructions.

Live Webcast

SINOVAC’s Special Meeting of Shareholders

Tuesday, July 8, 2025, at 8:00 pm Atlantic Standard Time
Wednesday, July 9, 2025, at 8:00 am China Standard Time

To attend the virtual meeting, you must preregister by 8:00 pm Atlantic Standard Time on July 7, 2025.

Questions?

Contact our proxy solicitor Georgeson LLC

(844) 568-1506 in the U.S.
(646) 543-1968 outside the U.S.
SinovacSpecialMeeting@georgeson.com