Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2024

As of June 30, 2024, the Company’s common stock reserved for issuance in the future is as follows (in thousands):


			As of
			June 30, 2024
Common stock awards granted under equity incentive plans			12,076
Common stock awards available for issuance under the 2017 Employee Stock Purchase Plan (1)			5,089
Common stock awards available for issuance under the 2017 Equity Incentive Plan			35,777
Total reserved shares of common stock			52,942

(1) The Company has not issued any common stock pursuant to the 2017 Employee Stock Purchase Plan.

Restricted stock unit activity for the six months ended June 30, 2024 is as follows (in thousands, except per share data):


	Number of Shares	Weighted-Average Grant Date Fair Value per Share
Balance as of December 31, 2023	8,674	$	97.33
Awarded	316	62.30
Released	(1,585)	110.11
Forfeited	(416)	100.37
Balance as of June 30, 2024	6,989	$	92.66

Stock option activity for the six months ended June 30, 2024 is as follows (in thousands, except years and per share data):


	Number of Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Balance as of December 31, 2023	5,310	$	75.55	6.8
Granted	92	64.34		—
Exercised	(287)	30.24		—
Forfeited and expired	(28)	141.30		—
Balance as of June 30, 2024	5,087	$	77.54	6.5	$	61,416

Options exercisable as of June 30, 2024	3,572	$	68.52	5.8	$	55,185

The following table shows the total stock-based compensation expense for the three and six months ended June 30, 2024 and 2023 (in thousands):


	Three Months Ended				Six Months Ended
	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023
Cost of revenue, platform	$	282	$	349	$	696	$	688
Cost of revenue, devices	139		812		1,038		1,616
Research and development	33,365		34,824		70,955		73,487
Sales and marketing	31,431		31,225		63,952		65,364
General and administrative	23,179		22,369		46,387		44,896
Total stock-based compensation	$	88,396	$	89,579	$	183,028	$	186,051