Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Tables)

v3.24.0.1
Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Plans
The table below summarizes certain data for our stock-based compensation plans (in millions):
Successor Predecessor
Fiscal Year Ended December 31, 2023 Fiscal Year Ended December 31, 2022 From
October 20, 2021
through
December 31, 2021
From July 1, 2021 through
October 19, 2021
Stock-based compensation expense - Profits Interests $ 13.3  $ 25.2  $ 5.3  $ 9.3 
Stock-based compensation expense - Omnibus Plan (excluding directors) $ 7.6  $ 5.5  $ —  $ — 
Stock-based compensation expense - Omnibus Plan (directors) $ 0.7  $ 0.7  $ —  $ — 
Tax benefit for stock-based compensation (1)
$ 2.4  $ 1.0  $ —  $ — 
(1) Tax benefit (expense) was zero related to Profits Interests expense for the years ended December 31, 2023 and 2022, Successor Stub Period from October 20, 2021 through December 31, 2021, and Predecessor Stub Period from July 1, 2021 through October 19, 2021.
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The fair value of the market condition PSUs is determined using a Monte Carlo simulation model on the grant date with the following assumptions:
Successor
March 29, 2023 April 1, 2022 December 27, 2021
MIR Stock Price $ 8.06  $ 8.13  $ 10.70 
Expected volatility(1)
45.30  % 45.32  % 41.12  %
Risk-free interest rate(2)
3.92  % 2.61  % 0.98  %
Dividend yield 0.00  % 0.00  % 0.00  %
Fair value $ 11.83  $ 11.69  $ 7.91 
(1) Expected volatility is based on historical volatilities from a group of comparable entities for a time period similar to
that of the expected term.
(2) The risk-free rate is based on an average of U.S. Treasury yields in effect at the time of grant corresponding with the
expected term.
The fair value of the Profits Interests are estimated based on a valuation model using Monte Carlo simulations, for the $12, $14, and $16 per share performance vesting conditions, with the following assumptions:

Cost of equity (1)
8.5  %
Risk-free interest rate (2)
0.1  %
Expected volatility (3)
30.0  %
Expected term (in years) (4)
5
Average fair value of all profits interests $ 6.90 
(1) Cost of equity based on a group of comparable entities
(2) The risk-free rate is based on an average of U.S. Treasury yields in effect at the time of grant corresponding with the expected term.
(3) Expected volatility is based on historical volatilities from a group of comparable entities for a time period similar to
that of the expected term and the expected term.
(4) Expected term is based on probability and expected timing of market events.
The fair value of the Predecessor Shares was estimated using the Black-Scholes option-pricing model, with the following assumptions:
Predecessor
June 30,
2020
Dividend yield 0.0  %
Risk-free interest rate (1)
0.2  %
Expected volatility (2)
55.7  %
Expected term (in years) (3)
3
Fair value $ 0.37 
(1) The risk-free rate is based on an average of U.S. Treasury yields in effect at the time of grant corresponding with the expected term.
(2) Expected volatility is based on historical volatilities from a group of comparable entities for a time period similar to
that of the expected term and the expected term.
(3) Expected term is based on probability and expected timing of market events.
Activity of RSUs, PSUs, and Director RSUs
Activity of our RSUs, PSUs, and Director RSUs is as follows:

RSUs PSUs Director RSUs
Quantity Weighted average grant date fair value Quantity Weighted average grant date fair value Quantity Weighted average grant date fair value
Beginning balance at Business Combination   $     $     $  
Awards granted 974,775  10.48  229,006  9.20  34,902  10.48 
Awards vested —  —  —  —  —  — 
Awards forfeited —  —  —  —  —  — 
Total awards outstanding at December 31, 2021 974,775  $ 10.48  229,006  $ 9.20  34,902  $ 10.48 
Awards granted 1,005,100  8.05  187,356  9.88  94,811  6.65 
Awards vested 225,186  10.48  —  —  80,779  8.29 
Awards forfeited 95,663  9.65  4,956  9.88  —  — 
Total awards outstanding at December 31, 2022 1,659,026  $ 9.05  411,406  $ 9.50  48,934  $ 6.68 
Awards granted 729,829  8.05  322,323  9.42  82,950  7.89 
Awards vested 500,603  9.06  —  —  90,409  7.24 
Awards forfeited 242,173  8.55  27,193  9.93  —  — 
Total awards outstanding at December 31, 2023 1,646,079  $ 8.68  706,536  $ 9.45  41,475  $ 7.89 
Schedule of Unrecognized Compensation Cost
Unrecognized compensation cost and weighted average periods remaining for non-vested awards as of December 31, 2023 are as follows (dollars in millions):

Successor
As of December 31, 2023 Weighted average period remaining for non-vested awards as of December 31, 2023
Unrecognized compensation cost
RSUs $ 11.4  1.2 years
PSUs 3.2  1.2 years
Director RSUs 0.3  4 months
Total unrecognized compensation cost $ 14.9 
Share-based Payment Arrangement, Activity
A summary of restricted stock activity within the Company’s equity plans and changes for the years ended June 30, 2021 and the Predecessor Stub Period, is as follows:
 
Shares
(in millions)
Weighted
 Average Grant-
 Date Fair Value
Total Fair Value
 (in millions)
Restricted Stock Awards      
Nonvested at June 30, 2021 0.2  $ 0.27  $ — 
Granted —  —  — 
Vested (0.2) 0.27  — 
Repurchased —  —  — 
Nonvested at October 19, 2021 —  $ —  $ —