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Stockholders’ Equity (Tables)
3 Months Ended
Mar. 31, 2022
Equity [Abstract]  
Schedule of Stock Options Activity

The following table summarizes stock options activity during the three months ended March 31, 2022 for the Amended 2010 Plan, the Amended 2010 Directors’ Plan, the 2018 Stock Plan and the Inducement Awards (in thousands, except per share data).

 

 

   Number of Shares   Weighted Average Exercise Price   Weighted Average Remaining Contractual Life
(in years)
   Total Intrinsic Value 
Outstanding as of January 1, 2022   5,110   $3.27    3.4   $20,820 
Forfeited   (20)   8.99    -    - 
Outstanding as of March 31, 2022   5,090   $3.11    3.2   $20,767 
Options vested and exercisable   4,069   $2.41    2.4   $19,398 

Summary of Warrant Activity

The following table summarizes warrant activity during the three months ended March 31, 2022 (in thousands, except per share data):

 

   Number of Shares   Weighted Average Exercise Price   Weighted Average Remaining Contractual Life
(in years)
 
Outstanding as of January 1, 2022   855   $8.23    1.9 
Warrants granted   -    -    - 
Outstanding as of March 31, 2022   855   $8.23    1.6 
Warrants vested and exercisable   855   $8.23    1.6