Net Loss Per Share
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Earnings Per Share [Abstract]    
Net Loss per Share

12. Net Loss per Share

Basic net loss per share is computed by dividing net loss applicable to common shareholders by the weighted-average number of common shares outstanding during the period. Preferred shares, outstanding common share purchase warrants, outstanding options and convertible debt are considered common stock equivalents and are only included in the calculation of diluted earnings per common share when net income is reported and their effect is dilutive.

Anti-dilutive common share equivalents excluded from the computation of diluted net loss per share were as follows:

 

Nine Months Ended
September 30,

   

2021

 

2020

Preferred shares issued and outstanding

 

1,000

 

9,355,778

Common share purchase warrants

 

19,512,039

 

2,901,182

Options and RSUs outstanding

 

71,728

 

101,175

11.    Net Loss per Share

Basic net loss per share is computed by dividing net loss applicable to common shareholders by the weighted-average number of common shares outstanding during the period. For all periods presented, there is no difference in the number of shares used to calculate basic and diluted shares outstanding due to the Company’s net loss position.

Anti-dilutive common share equivalents excluded from the computation of diluted net loss per share were as follows:

 

December 31,

   

2020

 

2019

Preferred shares

 

9,355,778

 

8,443,778

Common share purchase warrants

 

2,786,534

 

205,562

Restricted stock not yet vested or released

 

 

20,798

Options outstanding

 

101,175

 

2,600