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Stockholders Equity (Tables)
9 Months Ended
Sep. 30, 2024
Equity [Abstract]  
Schedule of Share-based Payment Arrangement, Option, Activity
The following table summarizes the option award activity for the nine months ended September 30, 2024 (in thousands, except share price, fair value and term):
Number of OptionsWeighted-
Average
Exercise
Price
Weighted-
Average
Remaining
Contractual
Term (in
years)
Aggregate
Intrinsic
Value (in
thousands)
TotalService
based
Performance-
based
Outstanding at December 31, 202317,004 11,278 5,726 $17.27 5.59$189,134 
Exercised(3,851)(3,050)(801)$16.40 
Forfeited or expired(268)(32)(236)$19.16 
Outstanding at September 30, 202412,885 8,196 4,689 $17.48 4.99$100,602 
Schedule of Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
The following table summarizes RSU and PSU activity and related information during the nine months ended September 30, 2024 under the 2021 Plan (in thousands, except share price):
Number of Shares
Weighted-Average Grant Date Fair Value
Unvested and outstanding as of December 31, 2023
21,063 $20.81 
Granted
4,987 31.48 
Vested
(8,334)21.63 
Forfeited
(1,403)21.81 
Unvested and outstanding as of September 30, 2024
16,313 $23.57 
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions
The following table summarizes the weighted-average assumptions used in estimating the fair value of the ESPP for the offering periods during the nine months ended September 30, 2024 and 2023 using the Black-Scholes pricing model:
Three Months Ended September 30,Nine Months Ended September 30,
2024202320242023
ESPP:
Expected term (in years)
      0.5 - 1.0
      0.5 - 1.0
0.5 - 1.0
0.5 - 1.0
Expected volatility
32.5% - 38.5%
36.2% - 39.4%
32.5% - 43.5%
36.2% - 48.5%
Risk-free interest rate
4.4% - 4.8%
5.4% - 5.5%
4.4% - 5.3%
5.1% - 5.5%
Expected dividend yield
— %— %
—%
—%
Fair value of common stock
$24.41
$21.14
$24.41 - $32.46
$17.06 - $21.14
Schedule of Share-based Payment Arrangement, Expensed and Capitalized, Amount
The stock-based compensation for all equity awards for the periods indicated below are as follows (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2024202320242023
Cost of revenues
$8,946 $8,764 $26,422 $25,074 
Research and development
18,390 16,671 52,883 47,003 
Sales and marketing
20,694 16,317 60,657 45,854 
General and administrative
17,970 14,756 55,638 44,127 
Total stock-based compensation
$66,000 $56,508 $195,600 $162,058