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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Stockholders' Equity Note [Abstract]

Schedule of Common Stock

In the year ended December 31, 2022 no shares of Class B common stock were converted to Class A common stock. As of December 31, 2022 the par value of the Class A, Class B and Class C shares was $2,435, $275 and $56, respectively.

		Shares Authorized				Shares Issued				Shares Outstanding
Class A			1,000,000,000				244,193,727				244,193,727
Class B			100,000,000				27,390,397				27,390,397
Class C			200,000,000				5,555,555				5,555,555
			1,300,000,000				277,139,679				277,139,679

Activity under Plans

Activity under the Plans is as follows:

		Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
Outstanding as of January 1, 2022			15,893,755			$	4.81				5.9			$	23,876
Granted			—			$	—
Forfeited			(2,081,214	)		$	6.04
Expired			(82,542	)		$	5.58
Exercised			(2,690,448	)		$	2.11
Outstanding as of December 31, 2022			11,039,551			$	5.23				5.5			$	996
Vested and expected to vest as of December 31, 2022			10,951,967			$	5.02				5.5			$	996
Options exercisable as of December 31, 2022			10,417,259			$	4.97				5.4			$	996

Weighted Average of Assumptions used to Determine Fair Value of Common Stock Options Granted

The weighted average of assumptions that the Company used to determine the fair value of the common stock options granted to employees and directors were as follows:

		Years Ended December 31,
		2022		2021		2020
Risk-free interest rate		N/A		N/A			1.09	%
Expected term (in years)		N/A		N/A			6.1
Expected volatility		N/A		N/A			52	%
Expected dividend yield		N/A		N/A			0	%

Summary of Unvested Restricted Stock Unit Activity

The following table summarizes the unvested restricted stock unit activity for the year ended December 31, 2022:

		Shares				Weighted Average Grant Date Fair Value
Unvested as of January 1, 2022			11,718,813			$	19.63
Granted			15,430,438				4.15
Vested			(5,372,060	)			12.09
Forfeited			(2,460,732	)			8.45
Unvested as of December 31, 2022			19,316,459			$	10.78

Summary of Performance-based Market Condition Share Awards

		Shares				Weighted Average Grant Date Fair Value
Unvested as of January 1, 2022			—			$	—
Granted			27,275,886				2.32
Vested			—				—
Cancelled/Forfeited			(1,673,481	)			2.62
Unvested as of December 31, 2022			25,602,405			$	2.30

Schedule of Weighted Average Assumptions used to Determine Estimated Fair Value of Performance-based Market Condition Share Awards Granted

The weighted average estimated fair value of the performance-based market condition share awards granted during the year ended December 31, 2022 was determined using a Monte-Carlo valuation simulation, with the following most significant weighted-average assumptions:

		Years Ended December 31,
		2022				2021		2020
Risk-free rate			2.34	%		N/A		N/A
Term to end of performance period (yrs)		3 years				N/A		N/A
Weighted average valuation date stock price		$	3.50			N/A		N/A
Expected volatility			75	%		N/A		N/A
Expected dividend yield			0	%		N/A		N/A

Stock-Based Compensation Expense

Stock-based compensation expense was classified in the consolidated statements of operations and comprehensive loss as follows:

		Years Ended December 31,
		2022				2021				2020
Cost of revenues		$	1,605			$	1,655			$	1,087
Research and development		$	10,236				7,613				4,793
Selling and marketing		$	7,182				7,666				4,147
General and administrative			50,121				26,875				108,331
Total		$	69,144			$	43,809			$	118,358

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