v3.22.2.2
Share-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Fair Value of Options
The fair value of the stock options granted is estimated on the date of grant using a Black-Scholes option pricing model with the following weighted-average assumptions:
 Three Months Ended September 30,Nine Months Ended September 30,
 2022202120222021
Expected stock price volatility61.0 %62.7 %62.2 %65.8 %
Risk free interest rate3.1 %0.8 %1.7 %0.5 %
Expected life of options (years)5.35.45.35.4
Expected annual dividend per share$— $— $— $— 
Schedule of Stock Options Activity A summary of the Company's stock options for the nine months ended September 30, 2022 were as follows:
Number of
Shares		Weighted Average Exercise 
Price		Weighted Average Remaining
Years		Aggregate
Intrinsic
Value
 (in thousands)  (in millions)
Options outstanding, December 31, 202114,731 $11.08   
Granted5,644 $11.53   
Exercised(511)$6.32   
Forfeited(435)$12.59   
Expired(193)$12.21 
Options outstanding, September 30, 202219,236 $11.30 6.8$18.9 
Vested and unvested expected to vest, September 30, 202217,587 $11.20 6.6$18.4 
Exercisable at September 30, 202210,655 $10.49 5.1$16.1 
Schedule of Non-Vested RSU Activity under the Plan A summary of non-vested RSU activity under the Plan for the nine months ended September 30, 2022 is as follows:
Number of
Shares		Weighted
Average Grant
Date Fair
Value		Weighted 
Average
Remaining 
Years		Aggregate
Intrinsic
Value
(in thousands)(in millions)
Non-vested units as of December 31, 20217,341 $13.90   
Granted4,998 $11.93   
Vested(2,144)$12.50   
Forfeited(356)$12.19   
Non-vested units as of September 30, 20229,839 $13.06 2.3$102.7 
Schedule of Equity Compensation Expenses
The following table summarizes information related to compensation expense recognized in the Consolidated Statements of Operations related to the equity awards:
 Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2022202120222021
Research and development expense$5,428 $3,775 $19,172 $13,232 
Selling, general, and administrative expense9,344 8,066 38,714 30,699 
Total equity compensation expense$14,772 $11,841 $57,886 $43,931