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Net Loss Per Common Share
 9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Net Loss Per Common Share

8. NET LOSS PER COMMON SHARE

Basic and diluted loss per common share were calculated as follows:

 

 

 

 

THREE MONTHS ENDED
SEPTEMBER 30,

 

 

NINE MONTHS ENDED
SEPTEMBER 30,

 


(in thousands except share and per share amounts)

 

2021

 

 

2020

 

 

2021

 

 

2020

 

Net loss

 

$

(10,196

)

 

$

(7,155

)

 

$

(34,598

)

 

$

(15,929

)

Weighted average number of common shares
   outstanding, basic and diluted

 

 

27,527,770

 

 

 

22,142,148

 

 

 

24,011,862

 

 

 

15,772,918

 

Net loss per common share, basic and diluted

 

$

(0.37

)

 

$

(0.32

)

 

$

(1.44

)

 

$

(1.01

)

 

The weighted average number of common shares outstanding diluted for the three and nine months ended September 30, 2021 excludes approximately 3.6 million stock options and unvested restricted common shares, which were not dilutive and not included in the computation of net loss per common share. The weighted average number of common shares outstanding diluted for the three and nine months ended September 30, 2020 excludes approximately 1.0 million unvested restricted common shares, which were not dilutive and not included in the computation of net loss per common share.