| Schedule of Restricted Stock Activity |
The following tables summarize activity for the six months ended June 30, 2025 and 2024: | | | | | | | | | | | | | | | | | | | | | | | | | Number of
Unvested
Restricted Stock Units | | Weighted
Average
Grant Date
Fair Value | | Number of
Unvested
Performance Vesting Restricted Stock Units | | Weighted
Average
Grant Date
Fair Value | | Unvested shares as of January 1, 2025 | 167,014 | | | $ | 115.67 | | | 178,139 | | | $ | 92.06 | | | Granted | 61,350 | | | 169.80 | | | 41,016 | | | 165.39 | | | Vested | (40,011) | | | 112.93 | | | — | | | — | | | Forfeited/canceled | (1,288) | | | 126.93 | | | — | | | — | | | Unvested shares as of March 31, 2025 | 187,065 | | | $ | 133.93 | | | 219,155 | | | $ | 105.78 | | Granted(1) | 10,511 | | | 195.92 | | | 35,974 | | | 66.82 | | | Vested | (39,463) | | | 104.36 | | | (71,948) | | | 66.82 | | | Forfeited/canceled | (994) | | | 144.69 | | | — | | | — | | | Unvested shares as of June 30, 2025 | 157,119 | | | $ | 145.44 | | | 183,181 | | | $ | 113.44 | |
_____________________ (1) The table includes the impacts of performance share units granted in a prior year that vested higher than 100% of target due to the Company's absolute TSR performance and RTSR performance compared to peers. | | | | | | | | | | | | | | | | | | | | | | | | | Number of
Unvested
Restricted Stock Units | | Weighted
Average
Grant Date
Fair Value | | Number of
Unvested
Performance Vesting Restricted Stock Units | | Weighted
Average
Grant Date
Fair Value | | Unvested shares as of January 1, 2024 | 193,602 | | | $ | 83.89 | | | 255,578 | | | $ | 54.40 | | | Granted | 69,436 | | | 152.54 | | | 58,346 | | | 156.00 | | | Vested | (17,720) | | | 75.96 | | | — | | | — | | | Forfeited/canceled | (747) | | | 99.88 | | | — | | | — | | | Unvested shares as of March 31, 2024 | 244,571 | | | $ | 103.91 | | | 313,924 | | | $ | 73.28 | | Granted(1) | 6,040 | | | 155.61 | | | 130,012 | | | 48.65 | | | Vested | (37,665) | | | 95.83 | | | (265,797) | | | 48.65 | | | Forfeited/canceled | (989) | | | 117.19 | | | — | | | — | | | Unvested shares as of June 30, 2024 | 211,957 | | | $ | 106.75 | | | 178,139 | | | $ | 92.06 | |
_____________________ |
| Schedule of Grant Date Fair Value of Awards Granted |
The table below summarizes the assumptions used in the Monte Carlo simulation to determine the grant date fair value of awards granted during the six months ended June 30, 2025 and 2024: | | | | | | | | | | Grant date | March 1, 2024 | March 1, 2025 | | Forecast period (years) | 3 | 3 | | Risk-free interest rates | 4.36% | 3.99% | | Implied equity volatility | 46.70% | 44.60% |
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