Earnings Per Common Share
Basic earnings per common share is computed by dividing net income remaining after allocation to participating unvested restricted shares by the weighted average number of basic common shares outstanding for the period. Except when the effect would be antidilutive, the calculation of diluted earnings per common share includes the weighted average net impact of nonparticipating unvested restricted shares. Total weighted average restricted shares were 1.0 million shares, 1.2 million shares, and 1.3 million shares, for the years ended December 31, 2025, 2024, and 2023, respectively.
The computation of basic and diluted earnings per share follows.
 Year Ended December 31, 2025
 (in millions, except per share amounts)
 Income
(Loss)
Average
Shares
EPS
Net income$208.4 
Unvested restricted share participation(0.4)
Net income per common share – basic208.0 48.9 $4.25 
Effect of dilutive securities:
Nonparticipating unvested restricted shares 0.1 
Net income per common share – diluted$208.0 49.0 $4.24 
 Year Ended December 31, 2024
 (in millions, except per share amounts)
 Income
(Loss)
Average
Shares
EPS
Net income$93.7 
Unvested restricted share participation(0.3)
Net income per common share – basic93.4 48.6 $1.92 
Effect of dilutive securities:
Nonparticipating unvested restricted shares— 0.2 
Net income per common share – diluted$93.4 48.8 $1.91 
 Year Ended December 31, 2023
 (in millions, except per share amounts)
 Income
(Loss)
Average
Shares
EPS
Net income$159.2 
Unvested restricted share participation(0.6)
Net income per common share – basic158.6 48.5 $3.27 
Effect of dilutive securities:
Nonparticipating unvested restricted shares— 0.2 
Net income per common share – diluted$158.6 48.7 $3.26 

About Earnings Per Share Disclosures

The earnings per share disclosure breaks down the calculation from net income to both basic and diluted EPS, revealing the full impact of a company's capital structure on per-share economics. The reconciliation between basic and diluted share counts exposes how many stock options, RSUs, convertible securities, and warrants are potentially dilutive to existing shareholders.

Key signals: a widening gap between basic and diluted shares indicates growing dilution from equity compensation or convertible instruments. Anti-dilutive securities excluded from the diluted calculation deserve attention — they represent latent dilution that will materialize if the stock price rises. Watch for the effect of share buybacks on per-share metrics: EPS growth driven primarily by repurchases rather than income growth signals weakening fundamentals. Compare year-over-year changes in the diluted share count against equity compensation expense to assess whether management is effectively managing dilution.