Stock-based compensation expense was $295 million and $358 million for the three months ended March 31, 2024 and 2025, respectively.

A summary of stock option and restricted stock unit (“RSU”) activity under the Company’s equity incentive plans was as follows (in millions, except per share amounts):


	Outstanding Stock Options			Outstanding RSUs
	Number of Shares	Weighted- Average Exercise Price		Number of Shares	Weighted- Average Grant Date Fair Value
As of December 31, 2024	5	$	93.53	30	$	97.93
Granted	1	142.06		9	141.05

Exercised/Vested	(1)	48.42		(2)	142.72
Canceled	—	—		(1)	140.65
As of March 31, 2025	5	$	102.71	36	$	105.33


	Number of Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Options outstanding as of March 31, 2025	5	$	102.71	5.69	$	173
Options exercisable as of March 31, 2025	4	$	87.88	4.63	$	171