Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.23.1
Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2023
Stock-based Compensation [Abstract]  
Stock-Based Compensation Expense
Stock-based compensation expense was included in general and administrative and research and development costs as follows in the accompanying condensed statements of comprehensive loss for the three-month periods indicated below (in thousands):
 
   
March 31,
 
   
2023
   
2022
 
General and administrative
 
$
468
   
$
295
 
Research and development
   
336
     
150
 
Total stock-based compensation
 
$
804
   
$
445
 
Weighted-Average Assumptions Used in Black-Scholes Option-pricing Model
The weighted average assumptions used in the Black‑Scholes option pricing model are as follows during the three months ended March 31, 2023 and 2022:
 
   
2023
   
2022
 
             
Expected stock price volatility
   
95.4
%
   
99.6
%
Expected life of options (years)
   
6.1
     
6.0
 
Expected dividend yield
   
%    
%
Risk free interest rate
   
3.7
%
   
1.7
%