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Stock-Based Compensation
3 Months Ended
Mar. 31, 2023
Stock-Based Compensation  
Stock-Based Compensation

11.       Stock-Based Compensation

The following table summarizes the classification of stock-based compensation expense in the Company’s condensed consolidated statements of operations related to options and restricted stock units granted to employees and nonemployees:

Three Months Ended

March 31, 

(in thousands)

    

2023

    

2022

Cost of goods sold (1)

$

125

$

155

Research and development

 

5,461

 

4,958

Selling, general and administrative

 

6,696

 

7,766

Stock-based compensation expense

$

12,282

$

12,879

 

 

Stock-based compensation expense capitalized into inventory

$

131

$

313

(1)Stock-based compensation capitalized into inventory is recognized as cost of goods sold when the related product is sold.

The stock-based compensation for the three months ended March 31, 2023 includes restructuring charges described in Note 13 of $1.1 million in research and development expense and a net forfeiture credit of $0.1 million in selling, general and administrative expense.