www.casipharmaceuticals.com Exhibit 99.1 CASI PHARMACEUTICALS ANNOUNCES FOURTH QUARTER AND FULL-YEAR 2022 FINANCIAL RESULTS BEIJING, China (April 26, 2023) CASI Pharmaceuticals, Inc. (Nasdaq: CASI), a Cayman incorporated biopharmaceutical company focused on developing and commercializing innovative therapeutics and pharmaceutical products, today reported financial results for the year ended December 31, 2022, and provided an update on key highlights for 2022. Wei-Wu He, Ph.D., CASI’s Chairman and Chief Exec ...