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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Restricted Common Stock Awards, Activity
A summary of the restricted common stock awards ("RSAs") for three months ended March 31, 2022 is as follows:

Number of Shares of Restricted Common Stock Awards

Average Grant-Date Fair Value
Unvested at December 31, 2021
5,479,451$1.80
Vested(208,682)$2.66
Unvested at March 31, 2022
5,270,769$1.84
Restricted Stock Unit, Activity
A summary of the change in control restricted stock units ("RSUs") activity for the three months ended March 31, 2022 is as follows:

Number of RSUsAverage Grant-Date Fair Value
Unvested at December 31, 2021
2,395,789$9.73
Granted 7,321,188$5.67
Forfeited(49,697)$(9.97)
Vested(123,884)$(9.83)
Unvested and outstanding at March 31, 2022
9,543,396$6.61