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Note 1 - Nature of the Business (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Subsidiaries [Table Text Block] |
Name of company |  | Place of incorporation |  | Date of incorporation |  | Percentage of ownership by the Group |  | Principal activities
BeyondSpring Pharmaceuticals Inc. (“BeyondSpring US”) |  | Delaware, U.S. |  | June 18, 2013 |  | 100% |  | Clinical trial activities
BeyondSpring Ltd. |  | The British Virgin Islands (“BVI”) |  | December 3, 2014 |  | 100% |  | Holding company
BeyondSpring (HK) Limited (“BeyondSpring HK”) |  | Hong Kong |  | January 13, 2015 |  | 100% |  | Holding company
Wanchun Biotechnology Limited (“BVI Biotech”) |  | BVI |  | April 1, 2015 |  | 100% |  | Holding company
Wanchun Biotechnology (Dalian) Ltd. (“Wanchun Dalian”) |  | PRC |  | April 23, 2015 |  | 100% |  | Holding company
Dalian Wanchunbulin Pharmaceuticals Ltd. (“Wanchunbulin”) |  | PRC |  | May 6, 2015 |  | 57.97% |  | Clinical trial activities
Beijing Wanchun Pharmaceutical Technology Ltd. (“Beijing Wanchun”) |  | PRC |  | May 21, 2018 |  | 57.97% |  | Holding company
SEED Therapeutics Inc. (“SEED”) |  | BVI |  | June 25, 2019 |  | 55.05% |  | Pre-clinical development activities
SEED Technology Limited (“SEED Technology”) |  | BVI |  | December 9, 2019 |  | 57.97% |  | Holding company
SEED Therapeutics US, Inc. (“SEED US”) |  | Delaware, U.S. |  | November 25, 2020 |  | 55.05% |  | Pre-clinical development activities
Wanchun Hongji (Dalian) Pharmaceuticals Ltd. (“Wanchun Hongji”) |  | PRC |  | March 22, 2022 |  | 55.05% |  | Pre-clinical development activities

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