Annual report pursuant to Section 13 and 15(d)

Stock Plans (Tables)

v3.23.1
Stock Plans (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of our option activity
                               
    Shares
(in thousands)		     Weighted Average
Exercise Price
per Share		     Weighted Average
Remaining Contractual
Term (years)		     Aggregate
Intrinsic Value
(in thousands)		  
Outstanding at January 1, 2022     682     $ 12.53       8.98     $ -  
Granted     310       1.18       -       -  
Cancelled/expired     (65 )     23.40       -       -  
Outstanding at December 31, 2022     927     $ 7.97       8.34     $ -  
Exercisable at December 31, 2022     927     $ 7.97       8.34     $ -  
Schedule of assumptions to estimate the fair value of options
               
    For the
Years Ended
December 31,		  
    2022     2021  
Weighted-average risk-free interest rate     1.9 %     0.5 %
Expected dividend payments     -       -  
Expected holding period (years)(1)     5.26       5.45  
Weighted-average volatility factor(2)     1.16       1.14  
Estimated forfeiture rates for options granted     6 %     30 %

 

 
(1) Expected holding period is based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and the expectations of future employee behavior.
(2) Weighted average volatility is based on the historical volatility of our common stock.
(3) Estimated forfeiture rates are based on historical data.
Schedule of the stock-based compensation expense
               
    For the
Years Ended
December 31,		  
    2022     2021  
Research and development   $ 553     $ 749  
General and administrative     394       756  
Total stock-based compensation expenses   $ 947     $ 1,505