v3.24.3
Equity Incentive Plan (Tables)
9 Months Ended
Sep. 30, 2024
Equity Incentive Plan  
Schedule of restricted share activity

Restricted share activity is summarized as follows:

​

​

​

​

​

​

​

​

    

Shares

    

Weighted Average

​

​

Outstanding

​

Grant Date

​

​

(in thousands)

​

Fair Value

Unvested restricted stock at December 31, 2023

 

194

​

$

68.85

​

​

​

​

​

​

Restricted stock granted

 

101

​

$

57.51

Restricted stock vested

​

(67)

​

$

69.37

Restricted stock forfeited

 

(5)

​

$

64.51

Unvested restricted stock at September 30, 2024

 

223

​

$

63.63

Schedule of valuation assumptions used

The following assumptions were used when determining the grant date fair value:

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​

​

​

​

​

​

​

​

​

​

​

​

​

2024

​

2023

​

2022

Expected term (years)

​

​

2.9

​

​

2.9

​

​

2.9

​

Volatility

​

​

20.0

%

​

23.6

%

​

33.5

%

Risk-free rate

​

​

4.5

%

​

4.4

%

​

1.8

%

Schedule of performance share and unit activity

Performance units activity is summarized as follows:

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​

​

​

​

​

​

    

Target Number

    

Weighted Average

​

​

of Awards

​

Grant Date

​

​

(in thousands)

​

Fair Value

Performance units at December 31, 2023 - three-year performance period to be completed

​

111

​

$

72.14

​

​

​

​

​

​

Performance units granted

​

77

​

$

59.16

Performance shares - three-year performance period completed

​

(31)

​

$

63.42

Performance units at September 30, 2024 - three-year performance period to be completed

​

157

​

$

67.50

​

​

​

​

​

​

​

Shares

    

Weighted Average

​

Outstanding

​

Grant Date

​

(in thousands)

​

Fair Value

Performance units and shares - three-year performance period completed but not yet vested at December 31, 2023

31

​

$

83.40

​

​

​

​

​

Shares earned at completion of three-year performance period (1)

23

​

$

63.42

Shares vested

(28)

​

$

75.18

Performance units and shares - three-year performance period completed but not yet vested at September 30, 2024

26

​

$

74.58

​

​

​

​

​

​

(1)Performance units granted in 2021 for which the three-year performance period was completed in 2024 were earned at the 76% performance level.