XML 33 R24.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Summary of Weighted-Average Assumptions Used Principally in Determining Fair Value of Options Granted The weighted-average assumptions used principally in determining the fair value of options granted were as follows:

 

 

Three Months Ended March 31,

 

 

 

2022

 

 

2021

 

Fair value of common stock

 

$

8.58

 

 

$

22.51

 

Expected term (in years)

 

 

6.0

 

 

 

6.0

 

Expected volatility

 

 

78.3

%

 

 

79.7

%

Risk-free interest rate

 

 

1.7

%

 

 

0.7

%

Dividend yield

 

 

 

 

 

 

Summary of Stock-Based Compensation Expense

Stock-based compensation expense was allocated as follows:

 

 

Three Months Ended March 31,

 

(in thousands)

 

2022

 

 

2021

 

Research and development

 

$

796

 

 

$

449

 

General and administrative

 

 

950

 

 

 

442

 

Total stock-based compensation expense

 

$

1,746

 

 

$

891