Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.21.2
Stock-based Compensation (Tables)
9 Months Ended
Sep. 30, 2021
Stock-based Compensation  
Weighted Average Assumptions

Three Months Ended September 30, 

 

Nine Months Ended September 30, 

 

    

2021

    

2020 (1)

 

    

2021

    

2020

 

Dividend yield

 

0

%  

n/a

 

0

%  

0

%

Expected volatility

 

71

%  

n/a

 

90

%  

100

%

Risk-free interest rate

 

0.85

%  

n/a

 

0.79

%  

0.77

%

Expected term

 

5.61 years

n/a

 

5.67 years

5.66 years

Stock Option Activity

Weighted

    

Weighted

    

Average

Average

Aggregate

Exercise

Contractual 

Intrinsic

Number of

Price

Term

Value

shares

Per Share

(in years)

(in thousands)

Outstanding at January 1, 2021

1,827,906

$

20.66

 

6.31

 

$

51,401

Granted

 

213,711

 

36.32

 

  

 

  

Exercised

 

(74,805)

 

13.54

 

  

 

  

Forfeited, expired or cancelled

(57,115)

 

71.26

 

  

 

  

Outstanding at September 30, 2021

1,909,697

$

21.18

 

6.02

$

20,077

Exercisable at September 30, 2021

1,595,665

$

19.53

 

5.45

$

19,276

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 September 30, 

Nine Months Ended September 30, 

    

2021

    

2020

    

2021

    

2020

Research and development

$

$

$

$

General and administrative

 

779

 

708

 

4,445

 

3,269

Total stock-based compensation expense

$

779

$

708

$

4,445

$

3,269