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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2021
Stockholders' Equity Note [Abstract]  
Summary of Stock Option Activity
The following tables summarize the activity under the Stock Plan:
Outstanding
Options
Weighted
Average
Exercise
Price
Weighted Average
Remaining
Contractual Life (in
years)
Balance at December 31, 2020
8,222,710 $0.19 8.30
Granted— $— 
Exercised(118,019)0.46 
Forfeited / canceled— — 
Balance as of March 31, 20218,104,691 $0.19 8.06
Granted— 
Exercised— 
Forfeited / Canceled(158,735)$0.14 
Balance as of June 30, 20217,945,956 $0.19 7.78
Granted— 
Exercised(6,215)$0.36 
Forfeited / Canceled— 
Balance as of September 30, 2021
7,939,741 $0.19 7.53
Vested and expected to vest at September 30, 2021
7,108,987