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Compensation Plans
3 Months Ended
Mar. 31, 2024
Equity [Abstract]  
Compensation Plans Compensation Plans
Stock-Based Compensation
For the three months ended March 31, 2023 and 2024, total stock based compensation (SBC) expense was $5.3 billion, including amounts associated with awards we expect to settle in Alphabet stock of $5.1 billion, for both periods.
Stock-Based Award Activities
The following table summarizes the activities for unvested Alphabet restricted stock units (RSUs) for the three months ended March 31, 2024 (in millions, except per share amounts):
 Number of
Shares
Weighted-
Average
Grant-Date
Fair Value
Unvested as of December 31, 2023338 $104.93 
Granted159 $133.43 
Vested(49)$107.61 
Forfeited/canceled(8)$106.64 
Unvested as of March 31, 2024440 $114.91 
As of March 31, 2024, there was $48.7 billion of unrecognized compensation cost related to unvested RSUs. This amount is expected to be recognized over a weighted-average period of 2.9 years.