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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Stock Option Activity
Stock option activity during the nine months ended September 30, 2020, was as follows (in thousands, except per share amounts):
Stock Options Outstanding
SharesWeighted-Average Exercise PriceWeighted-Average Remaining Contractual Term
Aggregate Intrinsic
Value (1)
(in years)
Outstanding as of December 31, 201956,966$2.25 3.5$933,299 
Granted 1,13022.35 
Exercised (28,855)2.25 
Outstanding as of September 30, 202029,241$3.03 3.1$1,124,964 
Exercisable as of September 30, 202028,322$2.41 2.9$1,107,358 
(1)We calculate intrinsic value based on the difference between the exercise price of in-the-money-stock options and the fair value of our common stock as of the respective balance sheet date.
Restricted Stock Unit Activity
RSU and RSA activity during the nine months ended September 30, 2020, was as follows (in thousands, except per share amounts):
Restricted Stock Units and Restricted Stock Awards Outstanding
SharesWeighted Average Grant Date Fair Value
Outstanding as of December 31, 201956,791$20.19 
Granted 29,06017.99 
Released(17,105)19.39 
Forfeited(9,111)18.82 
Outstanding as of September 30, 202059,635$19.55 
Share-Based Compensation Expense
Share-based compensation expense during the three and nine months ended September 30, 2020 and 2019, was as follows (in thousands):
Three Months Ended
September 30,
Nine Months Ended
September 30,
2020201920202019
Cost of revenue $2,298 $1,568 $6,049 $29,740 
Research and development61,357 83,539 156,621 794,161 
Sales and marketing11,958 21,243 23,803 223,400 
General and administrative 16,019 23,938 48,328 218,280 
Total share-based compensation $91,632 $130,288 $234,801 $1,265,581