• Sinovac reported it will miss filing deadline for its annual report on Form 20-F for fiscal year ended Dec. 31, 2025.
• Company expects to file within 15 calendar days of prescribed due date.
• Grant Thornton resigned as auditor on April 15, 2025.
• Grant Thornton said its prior audit opinions for fiscal years 2021-2023 should no longer be relied upon.
• Sinovac appointed Zhonghua Certified Public Accountants on Dec. 31, 2025, citing planned restatements for fiscal years 2021-2023 that it said will delay the 2025 filing.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Sinovac Biotech Ltd. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001213900-26-049775), on April 30, 2026, and is solely responsible for the information contained therein.