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Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Stock option activity during the six months ended June 30, 2020, was as follows (in thousands, except per share amounts):


	Stock Options Outstanding
		Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value ⁽¹⁾
						(in years)
Outstanding as of December 31, 2019		56,966		$	2.25	3.5	$	933,299
Granted	1,130		22.35
Exercised		(15,518)		2.11

Outstanding as of June 30, 2020		42,578		$	2.84	3.2	$	823,099
Exercisable as of June 30, 2020		41,588		$	2.38	3.1	$	823,087

(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 six months ended June 30, 2020, was as follows (in thousands, except per share amounts):


	Restricted Stock Units and Restricted Stock Awards Outstanding
	Shares	Weighted Average Grant Date Fair Value
Outstanding as of December 31, 2019	56,791	$	20.19
Granted	24,365	16.46
Released	(11,360)	19.33
Forfeited	(7,465)	18.95
Outstanding as of June 30, 2020	62,331	$	19.03

Share-Based Compensation Expense

Share-based compensation expense during the three and six months ended June 30, 2020 and 2019, was as follows (in thousands):



	Three Months Ended June 30,									Six Months Ended June 30,
	2020			2019			2020			2019
Cost of revenue		$	2,325		$	28,157		$	3,751		$	28,172
Research and development		46,358			709,996			95,264			710,622
Sales and marketing⁽¹⁾		(2,074)			202,128			11,845			202,157
General and administrative		15,536			194,318			32,309			194,342
Total share-based compensation		$	62,145		$	1,134,599		$	143,169		$	1,135,293

(1)Share-based compensation expense was negative for the three months ended June 30, 2020 due to the reversal of previously recognized share-based compensation expense related to unvested RSUs forfeited by our former Chief Operating Officer.