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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 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, 2022

3,756,835

$

8.28

$

36,616

Granted

1,161,926

$

14.20

Cancelled / Forfeited

(285,729)

$

10.52

Exercised

(144,187)

$

5.05

Balance as of December 31, 2023

 

4,488,845

$

9.77

 

$

97,266

Granted

 

3,237,758

$

12.77

 

  

Cancelled / Forfeited

 

(1,665,515)

$

10.16

 

  

Exercised

 

(510,669)

$

5.28

 

  

Balance as of December 31, 2024

 

5,550,419

$

11.81

$

18,771

Options exercisable as of December 31, 2024

 

2,854,762

$

9.24

$

13,390

Recognized Stock-Based Compensation Expense

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

    

Year Ended

December 31, 

(in thousands)

2024

2023

Stock options

$

18,633

$

5,901

Employee Stock Purchase Plan

417

402

Total stock-based compensation expense

$

19,050

$

6,303

Selling, general & administrative

$

17,746

$

5,073

Research & development

1,174

 

1,152

Cost of goods sold

130

 

78

$

19,050

$

6,303

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 years ended December 31, 2024 and 2023:

    

December 31, 

2024

 

2023

Weighted average fair value per ESPP purchase right

 

$

5.23

$

5.64

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 years ended December 31, 2024 and 2023:

    

December 31, 

2024

 

2023

Weighted average fair value of options granted

 

$

10.31

$

10.65

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 4.89

%