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Note 1 - Nature of the Business and the Basis of Preparation (Tables)
3 Months Ended
Mar. 31, 2025
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”)

People’s Republic of China (“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

    37.56%  

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

    37.56%  

Pre-clinical development activities

               

Wanchun Hongji (Dalian) Pharmaceuticals Ltd. (“Wanchun Hongji”)

PRC

March 22, 2022

    37.56%  

Pre-clinical development activities