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Stockholders’ Equity (Deficit) (Tables)
 3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation
Total stock-based compensation expense is as follows (in thousands):
Three Months Ended March 31,
20222021
Operations and support
$930 $406 
General and administrative
4,929 13,491 
Research and development
742 255 
Sales and marketing
79 1 
Total stock-based compensation expense
$6,680 $14,153 
Schedule of Key Assumptions used to Determine Fair Value of Stock Options
The following table summarizes the key assumptions used to determine the fair value of Sonder’s stock options granted to employees, non-employees, officers, and directors:
Three Months Ended March 31,
20222021
Expected term (in years)4.093.99
Expected volatility55 %64 %
Dividend yield— %— %
Risk-free interest Rate1.79 %0.41 %
Weighted-average grant-date fair value per share$2.13 $4.54