Exhibit 99.1 Shanghai (HQ) Suites 802, 505, 702, West Tower 88 Shangke Road, Pudong New District Shanghai, China United States Suite 710, 9801 Washingtonian Blvd Gaithersburg Maryland 20878 1 I-Mab Provides Business and Corporate Updates and Reports Financial Results for the Year Ended December 31, 2022 · Strategic reprioritization of the Company's pipeline to focus on key clinical assets and overall streamlining of corporate structure and workforce, resulting in a significant reduction in the cash burn rat ...