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Loss Per Common Share (Tables)
9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Computation of loss per common share
The following is the computation of loss per common share for the three and nine months ended September 30, 2021 and 2020:
Three Months Ended
September 30,
Nine Months Ended
September 30,
2021202020212020
Net loss$(23,531)$(8,822)$(50,277)$(11,983)
Weighted-average basic and diluted common shares outstanding88,105,066 87,227,136 88,001,222 87,160,520 
Loss per share - basic and diluted$(0.27)$(0.10)$(0.57)$(0.14)
Antidilutive Securities
The outstanding securities presented below were excluded from the calculation of loss per common share, for the periods presented, because such securities would have been anti-dilutive due to the Company’s loss per share during that period:
As of September 30,
20212020
Options to purchase common stock11,059,955 7,739,781 
Restricted stock units546,625 — 
Warrants to purchase common stock— 413,320