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
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock-based compensation related to all of the entity's share-based payments

Total stock-based compensation related to all of our share-based payments that we recognized for the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands):

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​

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​

​

​

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​

​

​

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Three Months Ended 

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Nine Months Ended

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​

September 30, 

​

September 30, 

​

​

2021

    

2020

​

2021

    

2020

Selling, general and administrative

​

$

1,800

​

$

1,352

​

$

5,625

​

$

3,981

Research and development

​

​

402

​

​

532

​

​

1,522

​

​

1,684

Total stock-based compensation expense

​

$

2,202

​

$

1,884

​

$

7,147

​

$

5,665

Employee stock option  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of weighted-average assumptions relating to options granted pursuant to equity incentive plans

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​

​

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Three Months Ended 

​

​

Nine Months Ended 

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​

​

September 30, 

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​

September 30, 

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​

    

2021

    

2020

    

    

2021

    

2020

 

Risk-free interest rate

​

1.1

%  

0.5

%  

​

1.0

%  

1.2

%

Expected term (in years)

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6.0

​

6.7

​

​

6.5

​

6.5

​

Dividend yield

​

0.0

%  

0.0

%  

​

0.0

%  

0.0

%

Expected volatility

​

70.4

%  

70.5

%  

​

70.6

%  

66.0

%