Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Stock-Based Compensation Expense

Stock-based compensation expense recorded in the condensed consolidated statements of operations was as follows (in thousands):

	Three Months Ended
	March 31,
	2022		2021
Platform operations	$	5,950	$	5,015
Sales and marketing		16,525		13,684
Technology and development		22,393		16,094
General and administrative		80,027		17,561
Total	$	124,895	$	52,354

Summary of Stock Option Activity

The following summarizes stock option activity:

	Shares Under Option (in thousands)			Weighted- Average Exercise Price
Outstanding as of December 31, 2021		18,984		$	15.14
Granted		122			81.37
Exercised		(2,395	)		10.19
Expired/forfeited		(247	)		39.93
Outstanding as of March 31, 2022		16,464		$	15.98
Exercisable as of March 31, 2022		11,803		$	9.29

Summary of Restricted Stock Activity

The following summarizes restricted stock activity:

	RSU (in thousands)			Weighted- Average Grant Date Fair Value
Unvested as of December 31, 2021		5,597		$	51.54
Granted		884			77.10
Vested		(518	)		40.20
Forfeited		(266	)		57.35
Unvested as of March 31, 2022		5,697		$	56.27