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Stockholders’ Equity (Tables)
6 Months Ended
Jun. 30, 2022
Equity [Abstract]  
Schedule of Stock Options Activity

The following table summarizes stock options activity during the six months ended June 30, 2022 for the 2022 Plan, the 2022 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 
Granted   400    6.44    7.0    - 
Cashless exercised   (570)   2.66    -    - 
Forfeited   (20)   2.87    -    - 
Outstanding as of June 30, 2022   4,920   $3.30    3.3   $46,159 
Options vested and exercisable   3,662   $2.31    2.3   $37,972 
Summary of Weighted Average Assumptions Used in Determining Fair Value of Warrants

The following table summarizes weighted average assumptions used in determining the fair value of the options at the date of grant during the six months ended June 30, 2022 and 2021:

 

   For the six months ended 
   June 30, 
   2022   2021 
Exercise price  $6.74   $9.13 
Expected term (years)   4.8    3.5 
Expected stock price volatility   77%   83%
Risk-free rate of interest   3.0%   0.6%
Expected dividend yield (per share)   0%   0%
Schedule of Warrant Activity

The following table summarizes warrant activity during the six months ended June 30, 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 June 30, 2022   855   $8.23    1.4 
Warrants vested and exercisable   855   $8.23    1.4