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Equity Based Compensation (Tables)
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]    
Summary of key assumptions used in the OPM valuation
The following reflects the key assumptions used in each of the valuation scenarios:
 
    
OPM
   
PWERM
 
Total equity value (in thousands)
   $ 280,400     $ 1,750,000  
Expected volatility of total equity
     95     60
Discount for lack of market
     30     15
Expected time to exit event
     3.7 years       0.5 years  
The following reflects the key assumptions used in the OPM valuation:
 
Total equity value (in thousands)
   $ 78,100  
Expected volatility of total equity
     80
Discount for lack of market
     30
Expected time to exit event
     3 years  
Summary of Compensation Expense
Compensation expense related to the issuance and purchase of Class B and
B-1
Units is included in research and development and general and administrative expense as follows (in thousands):
 
    
Three Months Ended March 31,
 
    
    2022    
    
    2021    
 
Research and development
   $ 17,367      $ —    
General and administrative
     35,319        175  
    
 
 
    
 
 
 
Total equity-based compensation expense
   $ 52,686      $ 175  
    
 
 
    
 
 
 
 
Summary of the activity related to the Company's Class B and B-1 Units granted
The following table summarizes the activity for the three months ended March 31, 2022, related to the Company’s Class B and
B-1
Units granted as equity awards to its employees, board members and service providers:
 
    
Number of
Shares
    
Weighted
Average Grant
Date Fair Value
 
Unvested awards outstanding at January 1, 2022
     2,460,617      $ 0.36  
Granted
     8,498,488        6.03  
Vested
     (449,486      0.36  
Forfeited
     (29,070      6.03  
    
 
 
    
 
 
 
Unvested awards outstanding at March 31, 2022
     10,480,549      $ 4.94  
    
 
 
    
 
 
 
The following table summarizes the activity related to the Company’s Profits Interest awards for the year ended December 31, 2021:
 
    
Number of
Shares
    
Weighted
Average Grant
Date Fair Value
 
Awards outstanding at December 31, 2020
     4,402,398      $ 0.36  
Vested
     (1,941,781      0.36  
    
 
 
    
 
 
 
Awards outstanding at December 31, 2021
     2,460,617      $ 0.36