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Net Loss per Share
3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Net Loss per Share

Note 8. Net Loss per Share


Securities that could potentially dilute loss per share in the future that were not included in the computation of diluted loss per share at March 31, 2021 and 2020 are as follows:


   As of March 31, 
   2021   2020 
Convertible preferred stock    688    688 
Warrants to purchase common stock    5,801,701    796,811 
Options to purchase common stock    484,304    88,950 
Total    6,286,693    886,449