Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.21.1
Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2021
Stock-based Compensation  
Weighted Average Assumptions

Three Months Ended March 31, 

 

    

2021

    

2020

 

Dividend yield

 

0

%  

0

%

Expected volatility

 

98

%  

100

%

Risk-free interest rate

 

0.71

%  

0.90

%

Expected term

 

5.61 years

5.57 years

Stock Option Activity

Weighted

    

Weighted

    

Aggregate

Average

Average

Intrinsic

Exercise

Contractual 

Value

Number of

Price

Term

(in

shares

Per Share

(in years)

thousands)

Outstanding at January 1, 2021

1,827,906

$

20.66

 

6.31

 

$

51,401

Granted

 

142,823

 

39.02

 

  

 

  

Exercised

 

(24,193)

 

16.08

 

  

 

  

Forfeited, expired or cancelled

(53,449)

 

70.43

 

  

 

  

Outstanding at March 31, 2021

1,893,087

$

20.70

 

6.23

$

45,176

Exercisable at March 31, 2021

1,527,042

$

19.13

 

5.56

$

40,186

Stock-based Compensation Expense

The following table shows total stock-based compensation expense for stock options and ESPP in the condensed consolidated statements of operations and comprehensive loss (in thousands):

Three Months Ended March 31, 

    

2021

    

2020

Research and development

$

$

General and administrative

 

2,898

 

1,788

Total stock-based compensation expense

$

2,898

$

1,788