XML 43 R31.htm IDEA: XBRL DOCUMENT v3.22.1
Stock Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of assumptions used in the Black-Scholes option-pricing model
The assumptions used in the Black-Scholes option-pricing model were determined as follows:
Year Ended December 31,
20212020
Volatility79.00% - 88.00%78.00 %
Risk-free interest rate0.19% - 1.24%0.00% - 1.55%
Expected life (in years)2.75 - 6.082.63 - 6.08
Dividend yield0 %0 %
Schedule of stock option activity
A summary of stock option activity for employee and director grants was as follows:
Number of
Shares 		Weighted-
Average
Exercise Price
Outstanding at December 31, 20203,616,314 $14.66 
Granted1,081,478 18.27 
Exercised(395,181)14.13 
Forfeited(684,195)13.91 
Expired(271)48.00 
Outstanding at December 31, 20213,618,145 13.55 
Options vested and exercisable at December 31, 20211,212,049 $13.79 
Schedule of restricted stock units activity The following table summarizes our RSU award activity during the year ended December 31, 2021 issued under the 2017 Plan:
Restricted Stock UnitsWeighted-
Average
Grant Date Fair Value
Non-vested at December 31, 202030,000 $51.98 
Granted119,000 28.64 
Vested(8,126)51.98 
Forfeited(29,000)28.39 
Non-vested at December 31, 2021111,874 33.27 
Schedule of warrant issued to non-employees A summary of warrants activity for non-employees was as follows:
Number of WarrantsWeighted Average
Exercise Price
Outstanding as of December 31, 20201,465,927 $6.02 
Issued (1)1,181 16.75 
Exercised (2)
(1,402,866)5.77 
Expired(28,410)4.80 
Outstanding as of December 31, 202135,832 16.75 
Warrants exercisable as of December 31, 202135,832 16.75 
_______________________
(1) Represents shares increased per warrant's anti-dilution requirement as ATM common shares were issued as discussed in Note 9 above.
(2) Included in total number of warrants exercised are 218,225 shares that were net settled at the election of the warrant holders during the year ended December 31, 2021.
Schedule of performance based and market based issuances The following table summarizes the Company's outstanding awards under this structure:
Grant DatePerformance MeasuresVesting TermPerformance Period# of SharesExercise Price
December 2017
Weighted Average Price of our common stock is $15.00 for at least twenty trading days within a period of thirty consecutive trading days ending on the trading day prior to January 1, 2023.
Fully vest on January 1, 2023January 1, 2023642,307 $7.50 
August 2018
Weighted Average Price of our common stock is $15.00 for at least twenty trading days within a period of thirty consecutive trading days ending on the trading day prior to January 1, 2023.
Fully vest on January 1, 2023January 1, 2023397,693 $7.50