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Net loss per share (Tables)
3 Months Ended
Mar. 31, 2021
Net loss per share  
Outstanding potentially dilutive securities excluded in the calculation of diluted net loss per share

As of March 31, 

    

2021

    

2020

Unvested restricted common stock awards

 

156,863

 

176,471

Unvested restricted common stock units

1,607,331

747,427

Outstanding stock options

 

6,251,862

 

6,065,155

Total

 

8,016,056

 

6,989,053