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Equity-based Compensation (Tables)
9 Months Ended
Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Restricted Stock Unit Activity
Restricted Stock Unit activity was as follows during the periods indicated:
Nine Months Ended September 30, 2022Nine Months Ended September 30, 2021
Restricted Stock UnitsWeighted Average Grant Date Fair ValueRestricted Stock Units
Unvested at beginning of period4,853,795 $56.74 985,398 
Granted6,516,786 $46.81 2,719,862 
Granted - performance-based 147,445 $33.89 — 
Vested(821,561)$51.95 (291,536)
Forfeited(1,280,906)$56.31 (199,968)
Unvested at end of period9,415,559 $49.99 3,213,756 
Restricted Stock activity was as follows during the periods indicated:
Nine Months Ended September 30, 2022Nine Months Ended September 30, 2021
Restricted stockWeighted Average Grant Date Fair ValueRestricted stock
Unvested at beginning of period3,525,373 $9.21 — 
Exchanged HoldCo Units— $— 872,371 
Exchanged Class P Units— $— 947,515 
Vested(2,005,106)$4.60 (385,120)
Forfeited(266,394)$5.72 (926)
Unvested at end of period1,253,873 $17.32 1,433,840 
Schedule of Unvested Options Activity
Options activity was as follows during the period indicated:
Nine Months Ended September 30, 2022Nine Months Ended September 30, 2021
OptionsWeighted Average Exercise PriceOptions
Outstanding at beginning of period417,085 $21.00 552,440 
Exercised(56,219)$21.00 (64,519)
Expired(7,935)$21.00 — 
Forfeited(20,485)$21.00 (20,191)
Outstanding at end of period332,446 $21.00 467,730 
Options have a maximum contractual term of ten years. The aggregate intrinsic value and weighted average remaining contractual terms of Options outstanding and Options exercisable were as follows as of September 30, 2022.
September 30, 2022
Aggregate intrinsic value (in millions)
Unit Options outstanding$6.9 
Unit Options exercisable$5.2 
Weighted average remaining contractual term (in years)
Unit Options outstanding7.6 years
Unit Options exercisable7.6 years
Schedule of Unit Activities
HoldCo Unit activity was as follows during the periods indicated:
Nine Months Ended September 30, 2022Nine Months Ended September 30, 2021
HoldCo UnitsWeighted Average Grant Date Fair ValueHoldCo Units
Unvested at beginning of period— $— 1,214,105 
Exchanged for Restricted Stock— $— (872,371)
Vested— $— (298,177)
Forfeited— $— (43,557)
Unvested at end of period— $— — 
Class P Unit activity was as follows during the periods indicated:
Nine Months Ended September 30, 2022Nine Months Ended September 30, 2021
Class P UnitsWeighted Average Participation ThresholdClass P Units
Unvested at beginning of period— $— 8,796,642 
Exchanged for Restricted Stock— $— (1,133,142)
Vested— $— (4,506,931)
Forfeited— $— (94,621)
Unvested at end of period— $— 3,061,948 
LTIP Unit activity was as follows during the periods indicated:
Nine Months Ended September 30, 2022Nine Months Ended September 30, 2021
LTIP UnitsWeighted Average Participation ThresholdLTIP Units
Unvested at beginning of period— $— 47,620 
Granted— $— 247,045 
Unvested at end of period— $— 294,665 
Schedule of Valuation Assumptions
The fair value of the ESPP purchase was determined using the Black-Scholes option pricing model with the following assumption ranges and fair value per unit:
Nine Months Ended September 30, 2022
Volatility71.9%
Expected term0.5 years
Risk-free rate2.2%
Expected dividends—%
Fair value per unit$9.56
Summary of Unamortized Equity-Based Compensation Costs
As of September 30, 2022, unamortized equity-based compensation costs related to each equity-based incentive award described above is the following:
($ in millions, period in years)AmountWeighted Average Remaining Service Period
Restricted Stock Units$383.1 2.6
Common Stock Options0.2 0.9
Restricted Stock11.7 1.3
HSKB Incentive Units0.2 0.3
HSKB Phantom Units13.8 2.8
Employee Stock Purchase Plan0.6 0.2
Total unamortized equity-based compensation cost$409.6 2.6