Exhibit 99.1 SINOVAC Reports Unaudited First Half of 2023 Financial Results BEIJING, China, August 15, 2023 /Business Wire/ -- Sinovac Biotech Ltd. (NASDAQ: SVA) ("SINOVAC" or the "Company"), a leading provider of biopharmaceutical products in China, announced today its unaudited financial results for the six months ended June 30, 2023. First Half of 2023 Financial Summary · Sales for the six months ended June 30, 2023 were $140.4 million, compared to $1.2 billion in the prior year period. · The Company pos ...