v3.24.0.1
Stock Incentive Plan and Stock-based Compensation (Tables)
12 Months Ended
Dec. 31, 2023
Stock Incentive Plan and Stock-based Compensation  
Summary of changes in stock options granted

The following table summarizes stock option activity for the year ended December 31, 2023:

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​

​

​

​

​

​

​

​

    

​

    

​

​

    

Weighted-

​

​

​

​

Weighted-

​

Average

​

​

​

​

Average

​

Remaining

​

​

Number of

​

Exercise

​

Contractual

​

    

Awards

    

Price

    

Term

Awards outstanding—December 31, 2022

 

6,460,947

​

$

30.90

 

7.86

Awards issued

 

440,294

​

$

34.80

 

  

Awards exercised

 

(371,896)

​

$

12.00

 

  

Awards forfeited

 

(212,923)

​

$

25.25

 

  

Awards outstanding—December 31, 2023

 

6,316,422

​

$

32.47

 

7.17

Summary of changes in SARs granted

The following table summarizes SARs activity for the year ended December 31, 2023:

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​

​

​

​

​

​

​

​

    

​

    

​

​

    

Weighted-

​

​

​

​

Weighted-

​

Average

​

​

​

​

Average

​

Remaining

​

​

Number of

​

Exercise

​

Contractual

​

    

Awards

    

Price

    

Term

Awards outstanding—December 31, 2022

 

43,208

​

$

9.38

 

6.32

Awards issued

 

—

​

$

—

 

  

Awards exercised

 

—

​

$

—

 

  

Awards forfeited

 

—

​

$

—

 

  

Awards outstanding—December 31, 2023

 

43,208

​

$

9.38

 

5.32

Summary of changes in RSUs granted

The following table summarizes RSU activity for the year ended December 31, 2023:

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​

​

​

​

​

​

    

​

    

​

​

​

​

​

​

Weighted-

​

​

​

​

Average

​

​

Number of

​

Grant Date

​

    

Awards

    

Fair Value

Awards outstanding—December 31, 2022

 

60,000

​

$

29.03

Awards issued

 

300,000

​

$

31.78

Awards vested

 

(30,000)

​

$

29.03

Awards forfeited

 

—

​

$

—

Awards outstanding—December 31, 2023

 

330,000

​

$

31.53

Summary of assumptions used to value awards

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​

​

​

​

​

​

​

​

As of

​

    

December 31, 

    

December 31, 

​

​

    

2023

    

2022

​

Dividend yield

 

0.00

%  

0.00

%

Expected volatility

 

74.87 - 80.78

%  

72.57 - 77.08

%

Risk-free interest rate

 

3.42 - 4.62

%  

1.99 - 4.05

%

Lack of marketability discount

 

0.00

%  

0.00

%

Expected term (years)

 

2.26 - 10.77

 

3.1 - 6.3

​

Summary of stock-based compensation expense

​

​

​

​

​

​

​

​

​

​

​

​

​

Year Ended December 31, 

​

    

2023

    

2022

​

2021

Research and development expense

​

$

3,962

​

$

2,614

​

$

2,121

Sales and marketing expense

​

 

5,148

​

 

3,886

​

 

3,103

General and administrative expense

​

 

22,096

​

 

20,405

​

 

10,881

​

​

$

31,206

​

$

26,905

​

$

16,105