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Stock-Based Compensation Plan (Tables)
 6 Months Ended
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Summary of Stock Option Plan Activity
A summary of activity for the six months ended June 30, 2022 and 2021 for the 2011 Stock Option Plan is as follows:
Number of
Stock Options
Weighted Average
Exercise Price
Balance (December 31, 2021)1,260,328 $0.56
Granted— —
Exercised(155,782)0.53
Forfeited(281,574)0.64
Balance (June 30, 2022)822,972 0.54
Vested (as of June 30, 2022)822,972 $0.54
Number of
Stock Options
Weighted Average
Exercise Price
Balance (December 31, 2020)1,571,205 $0.59
Granted— —
Exercised(56,059)0.24
Forfeited— —
Balance (June 30, 2021)1,515,146 0.58
Vested (as of June 30, 2021)1,515,146 $0.58
A summary of activity for the six months ended June 30, 2022 and 2021 for the 2017 Stock Option Plan is as follows:
Number of Units
Weighted Averaged
Exercise Price
Balance (December 31, 2021)3,936,176 $0.92 
Granted— — 
Exercised(6,371)$0.92 
Forfeited(309,891)0.92 
Balance (June 30, 2022)3,619,914 $0.92 
Vested (as of June 30, 2022)
3,340,901 $0.92 
Number of Units
Weighted Averaged
Exercise Price
Balance (December 31, 2020)3,961,658 $0.92 
Granted— — 
Forfeited— — 
Balance (June 30, 2021)3,961,658 $0.92 
A summary of activity for the six months ended June 30, 2022 and 2021 for the options associated with the 2020 Incentive Award Plan is as follows:
Number of Units
Weighted Averaged
Exercise Price
Balance (December 31, 2021)1,469,297 $11.12 
Granted1,573,361 $1.68 
Forfeited(1,426,349)$7.00 
Balance (June 30, 2022)
1,616,309 $6.46 
Exercisable321,284 $11.34 

Number of Units
Weighted Averaged
Exercise Price
Balance (December 31, 2020)— $— 
Granted1,426,514 11.34 
Forfeited— — 
Balance (June 30, 2021)1,426,514 $11.34 
The options associated with the Inducement Plan vest over a service period of four years. A summary of activity for the six months ended June 30, 2022 for the options associated with the Inducement Plan is as follows:
Number of Units
Weighted Averaged
Exercise Price
Balance (December 31, 2021)— $— 
Granted569,677 $0.61 
Forfeited— $— 
Balance (June 30, 2022)
569,677 $0.61 
Exercisable— $— 
Summary of Options Vested and Expected to Vest The following summarizes certain information about stock options vested and expected to vest as of June 30, 2022 related to the 2011 Stock Option Plan:
Number of
Stock Options
Weighted Average
Remaining
Contractual Life
Weighted Average
Exercise Price
Outstanding822,972 0.17 years$0.54
Exercisable822,972 0.17 years$0.54
The following summarizes certain information about stock options vested and expected to vest as of June 30, 2022 related to the 2017 Stock Option Plan:
Number of
Stock Options
Weighted Average
Remaining
Contractual Life
Weighted Average
Exercise Price
Outstanding3,619,914 7.03 years$0.92
Exercisable3,340,901 6.94 years$0.92
The following summarizes certain information about stock options vested and expected to vest as of June 30, 2022 related to the 2020 Stock Option Plan:
Number of
Stock Options
Weighted Average
Remaining
Contractual Life
Weighted Average
Exercise Price
Outstanding1,616,309 9.21 years$6.46
Exercisable321,284 8.56 years$11.34
The following summarizes certain information about stock options vested and expected to vest as of June 30, 2022 related to the Inducement Plan:
Number of
Stock Options
Weighted Average
Remaining
Contractual Life
Weighted Average
Exercise Price
Outstanding569,677 9.88 years$0.61
Exercisable— —$—
Schedule of Inputs Used
The inputs used for the 2017 Stock Option Plan were as follows:
Balance (Expected volatility)80.00 %
Expected dividend yield— %
Expected term (in years)
3.6 - 4.8 years
Risk-free interest rate
0.32% - 0.45%
The inputs used for the 2020 Incentive Award Plan options were as follows for the six months ended June 30, 2022:

Balance (Expected volatility)
80%
Expected dividend yield— %
Expected term (in years)
 6 years
Risk-free interest rate2.20 %
The inputs used for the Inducement Incentive Award Plan options were as follows for the three months ended June 30, 2022:

Balance (Expected volatility)85 %
Expected dividend yield— %
Expected term (in years)6.25 years
Risk-free interest rate2.86 %
The inputs used to value the Inducement PSUs were as follows at May 16, 2022:

Expected volatility105.00 %
Starting stock price$0.61 
Expected term (in years)10 years
Risk-free interest rate2.88 %
Earnout hurdle
$4.00-$8.00-$12.00
Summary of Restricted Stock Unit Activity A summary of activity for the six months ended June 30, 2022 for the restricted shares associated with the 2020 Incentive Award Plan is as follows:
Balance (Number of Units
Weighted Average Grant Date Fair Value
Balance (December 31, 2021)597,739 $5.57 
Granted3,002,883 $1.00 
Forfeited(805,124)$3.78 
Vested (as of June 30, 2022)(247,115)$5.69 
Balance (June 30, 2022)
2,548,383 $1.03 
A summary of activity for the six months ended June 30, 2022 and 2021 for the RSUs is as follows:

Number of Units
Weighted Average
grant date fair value
Balance (December 31, 2021)621,200 $10.70 
Granted— — 
Forfeited(466,309)10.70 
Balance (June 30, 2022)
154,891 $10.70 

Number of Units
Weighted Average
grant date fair value
Balance (December 31, 2020)— $— 
Granted640,421 10.70 
Forfeited— — 
Balance (June 30, 2021)
640,421 $10.70 
The restricted shares associated with the Inducement Plan vest over various service periods. A summary of activity for the six months ended June 30, 2022 for the restricted shares associated with the Inducement Plan is as follows:
Balance (Number of Units
Weighted Average Grant Date Fair Value
Balance (December 31, 2021)— $— 
Granted5,619,822 $0.61 
Forfeited— $— 
Vested (as of June 30, 2022)(87,458)$0.61 
Balance (June 30, 2022)
5,532,364 $0.61 
Share-Based Payment Arrangement, Performance Shares, Activity
A summary of activity for the six months ended June 30, 2022 for the PSUs is as follows:

Number of Units
Weighted Average
grant date fair value
Balance (December 31, 2021)— $— 
Granted5,100,000 0.55 
Forfeited— — 
Balance (June 30, 2022)
5,100,000 $0.55