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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2024
Stock-Based Compensation  
Summary of stock-based compensation expenses

`

Three months ended March 31, 

2024

2023

(in thousands)

Cost of revenues

$

3,777

$

2,556

Research and development

 

20,649

 

14,640

Selling, general and administrative

 

40,021

 

23,281

Total

$

64,447

$

40,477

Summary of stock option activity

Weighted-

Number of

Average

Shares

Exercise

Outstanding

Price

(in thousands, except for per share data)

December 31, 2023

5,501

$

23.65

Options exercised

(792)

$

8.17

March 31, 2024

4,709

$

26.25

Restricted stock units

Weighted-

Average

Grant Date

Shares

Fair Value

(in thousands, except for per share data)

Balance at December 31, 2023

9,248

$

49.50

Granted

4,608

$

67.28

Vested

(1,861)

$

52.40

Cancelled/forfeited

(94)

$

57.77

Balance at March 31, 2024

11,901

$

56.16