Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.20.2
Stock-based Compensation (Tables)
9 Months Ended
Sep. 30, 2020
Stock-based Compensation  
Weighted Average Assumptions

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Three Months Ended September 30, 

 

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Nine Months Ended September 30, 

 

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2020

    

2019

 

    

2020

    

2019

 

Dividend yield

 

n/a

​

0

%

 

0

%  

0

%

Expected volatility

 

n/a

​

101

%

 

100

%  

103

%

Risk-free interest rate

 

n/a

​

1.71

%

 

0.77

%  

2.49

%

Expected term

 

n/a

​

5.47 years

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5.66 years

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5.60 years

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Stock Option Activity

Stock option activity for the nine months ended September 30, 2020, was as follows:

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Weighted

    

Weighted

    

Aggregate

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Average

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Average

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Intrinsic

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Exercise

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Contractual 

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Value

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Number of

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Price

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Term

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(in

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shares

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Per Share

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(in years)

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thousands)

Outstanding at beginning of year

 

1,839,623

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$

20.42

 

6.88

 

$

26,829

Granted

 

187,811

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21.12

 

  

 

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Exercised

 

(6,000)

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4.28

 

  

 

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Forfeited, expired or cancelled

 

(18,655)

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141.47

 

  

 

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Outstanding at end of period

 

2,002,779

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$

19.41

 

6.50

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$

14,864

Exercisable at end of period

 

1,659,679

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$

19.64

 

6.02

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$

14,167

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) income (in thousands):

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Three Months Ended September 30, 

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Nine Months Ended September 30, 

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2020

    

2019

    

2020

    

2019

Research and development

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$

—

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$

66

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$

—

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$

174

General and administrative

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708

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1,428

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3,269

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4,059

Total stock-based compensation expense

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$

708

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$

1,494

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$

3,269

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$

4,233