Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Tables)

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STOCK-BASED COMPENSATION (Tables)
9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Stock Option Activity The table below represents stock option award activity for the nine months ended September 30, 2021:
Outstanding Exercisable
January 1, 2021 1,140,975  955,302 
Granted 5,000  57,770 
Exercised (105,098) (105,098)
Cancelled or expired (82,521) (65,347)
September 30, 2021 958,356 842,627
Schedule of Share-based Compensation, Restricted Stock Activity The table below represents restricted stock activity for the nine months ended September 30, 2021:
Number of Restricted Share Units
Outstanding at January 1, 2021 3,038,785 
Granted 2,508,442 
Vested (880,818)
Forfeited (210,415)
Outstanding at September 30, 2021 4,455,994 
Schedule of Stock-based Compensation
Total stock-based compensation recorded in the condensed consolidated statements of comprehensive loss is allocated as follows (in thousands): 
Three Months Ended September 30, Nine Months Ended September 30,
  2021 2020 2021 2020
Research and development $ 1,059  $ 645  $ 3,116  $ 2,163 
Sales, marketing and administration 869  828  3,116  2,300 
   Total stock-based compensation $ 1,928  $ 1,473  $ 6,232  $ 4,463