Compensation Plans

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Compensation Plans

Compensation Plans

Stock-Based Compensation

For the three months ended June 30, 2020 and 2021, total stock-based compensation ("SBC") expense was $3.5 billion and $4.0 billion, including amounts associated with awards we expect to settle in Alphabet stock of $3.3 billion and $3.7 billion, respectively. For the six months ended June 30, 2020 and 2021, total SBC expense was $6.8 billion and $7.8 billion, including amounts associated with awards we expect to settle in Alphabet stock of $6.5 billion and $7.4 billion, respectively.

Stock-Based Award Activities

The following table summarizes the activities for our unvested restricted stock units ("RSUs") in Alphabet stock for the six months ended June 30, 2021:

	Unvested Restricted Stock Units
	Number of Shares	Weighted- Average Grant-Date Fair Value
Unvested as of December 31, 2020	19,288,793	$	1,262.13
Granted	9,082,093	$	1,810.91
Vested	(5,491,338)	$	1,315.93
Forfeited/canceled	(973,555)	$	1,396.04
Unvested as of June 30, 2021	21,905,993	$	1,475.11

As of June 30, 2021, there was $30.6 billion of unrecognized compensation cost related to unvested employee RSUs. This amount is expected to be recognized over a weighted-average period of 2.7 years.