XML 36 R25.htm IDEA: XBRL DOCUMENT v3.24.3
Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Schedule of Stock Option Activity

The following is a summary of stock option activity:

    

    

Weighted 

    

Number 

Average 

Aggregate 

of 

Exercise 

Intrinsic 

Options

Price

Value

 

(in  thousands)

Balance as of December 31, 2023

 

4,488,845

$

9.77

$

97,266

Granted

 

3,170,198

 

12.75

 

  

Cancelled / Forfeited

 

(1,514,153)

 

9.57

 

  

Exercised

 

(298,513)

 

5.39

 

  

Balance as of September 30, 2024

 

5,846,377

$

11.66

$

7,857

Options exercisable as of September 30, 2024

 

2,947,395

$

8.90

$

6,927

Recognized Stock-Based Compensation Expense

The following table presents the components and classification of stock-based compensation expense for the periods indicated:

Three months ended

Nine months ended

    

September 30, 

    

September 30, 

(in thousands)

2024

2023

2024

2023

Stock options

$

2,550

$

1,419

$

16,063

$

4,403

Employee Stock Purchase Plan

130

113

302

310

Total stock-based compensation expense

$

2,680

$

1,532

$

16,365

$

4,713

Selling, general & administrative

$

2,379

$

1,290

$

15,412

$

3,728

Research & development

267

 

221

855

 

927

Cost of goods sold

34

 

21

98

 

58

$

2,680

$

1,532

$

16,365

$

4,713

ESPP  
Schedule of Assumptions Used to Determine the Grant-Date Fair Value of Stock Options

The following table provides the weighted average fair value of ESPP purchase rights and the related assumptions used in the Black-Scholes option pricing model for the nine months ended September 30, 2024 and 2023:

    

September 30, 

2024

 

2023

Weighted average fair value per ESPP purchase right

 

$

7.60

$

9.01

Expected term (in years) 

 

0.5

0.5

Expected volatility

 

74.0% to 96.9

%

76.2% to 84.6

%

Expected dividend yield

 

%

%

Risk-free interest rate

 

5.24% to 5.37

%

4.77% to 5.53

%

Employee Stock Option  
Schedule of Assumptions Used to Determine the Grant-Date Fair Value of Stock Options

The following table provides the weighted average fair value of options granted to employees and the related assumptions used in the Black-Scholes option pricing model for the nine months ended September 30, 2024 and 2023:

    

September 30, 

2024

 

2023

 

Weighted average fair value of options granted

 

$

10.31

$

10.59

Expected term (in years) — non-officer employees

 

5.0 to 6.1

5.5 to 6.1

Expected term (in years) — officer employees

 

2.5 to 6.1

2.5 to 6.1

Expected volatility

 

87.7% to 98.9

%

77.2% to 79.6

%

Expected dividend yield

 

%

%

Risk-free interest rate

 

3.67% to 4.71

%

3.40% to 4.61

%