The Company's 2015 Long-Term Incentive Plan and 2021 Incentive Award Plan (together, “Stock Plans”) permit the grant of restricted stock units (“RSUs”), stock options, and other stock-based awards to employees, non-employees including directors, and consultants.

The following table summarizes the Company’s restricted stock unit activity during the three months ended March 31, 2025:


	RSUs
	Number of shares (in millions)	Weighted-average grant-date fair value
Outstanding at December 31, 2024	61	$	14.10
Granted	7	$	11.84
Vested	(15)	$	14.00
Forfeited	(2)	$	14.76

Outstanding at March 31, 2025	51	$	13.86
Vested and expected to vest at March 31, 2025	51	$	13.86

Stock option activity during the three months ended March 31, 2025 was not material.

As of March 31, 2025, the Company’s unrecognized stock-based compensation expense for unvested awards was $826 million, which is expected to be recognized over a weighted-average period of 1.7 years and 4.9 years for RSUs and stock options outstanding, respectively.