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Note 10 - Net Loss Per Share
 3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Earnings Per Share [Text Block]
10.
Net loss per share
 
Basic and diluted net loss per share attributable to ordinary shareholders was calculated as follows:
 
    Three months ended March 31,  
    2019     2020  
    (Unaudited)     (Unaudited)  
Numerator:                
Net loss attributable to BeyondSpring Inc.—basic and diluted   $
(7,293
 )   $
(16,084
 )
Denominator:                
Weighted average number of ordinary shares outstanding—basic and diluted    
23,029,362
      
27,732,449
  
                 
Net loss per share —basic and diluted   $
(0.32
 )   $
(0.58
 )
 
The effects of restricted shares and share options were excluded from the calculation of diluted loss per share as their effect would have been anti-dilutive during the
three
months ended
March 31, 2019
and
2020.