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STOCK-BASED COMPENSATION (Tables)
9 Months Ended
Sep. 30, 2023
STOCK-BASED COMPENSATION [Abstract]  
Stock Option Granted

During the three and nine months ended September 30, 2023 and 2022, the Company granted the following stock options (in thousands):


 
 
Three months ended September 30,
   
Nine months ended September 30,
 
 
 
2023
   
2022
   
2023
   
2022
 
Stock options granted
   
-
     
188
     
237
     
287
 
Weighted-Average Assumptions Used for Stock Options Granted

The following weighted-average assumptions were used for stock options granted during the three and nine months ended September 30, 2023 and 2022:

 
 
Three months ended September 30,
   
Nine months ended September 30,
 
 
 
2023
   
2022
   
2023
   
2022
 
Weighted average risk-free rate
   
-
   
2.64
%
   
3.82
%
   
2.54
%
Weighted average volatility
   
-
   
89.80
%
   
95.15
%
   
91.20
%
Dividend yield
   
-

   
0
%
   
0
%
   
0
%
Expected term
 
-
   
5.73 years
   
5.44 years
   
5.30 years
 


The per-share weighted average grant-date fair value of stock options granted during the three and nine months ended September 30, 2023 and 2022 was as follows:



 
 
Three months ended September 30,
   
Nine months ended September 30,
 
 
 
2023
   
2022
   
2023
   
2022
 
Weighted average grant date fair value
 
-
   
$
7.24
   
$
2.99
   
$
12.91
 
Stock-Based Compensation Expense

For the three and nine months ended September 30, 2023 and 2022, the Company recognized stock-based compensation expense as follows (in thousands):


 
 
Three months ended September 30,
   
Nine months ended September 30,
 
 
 
2023
   
2022
   
2023
   
2022
 
Research and development
 
$
57
   
$
183
   
$
177
   
$
1,075
 
General and administrative
   
117
     
293
     
900
     
1,463
 
Total
 
$
174
   
$
476
   
$
1,077
   
$
2,538