Income Attributable to Tennant Company Per Share
The computations of basic and diluted earnings attributable to Tennant Company per share for the years ended December 31 were as follows:
202520242023
Numerator:
Net income$43.8 $83.7 $109.5 
Denominator:
Basic - weighted average shares outstanding18,366,21618,786,87118,509,523
Effect of dilutive securities213,491309,267274,110
Diluted - weighted average shares outstanding18,579,70719,096,13818,783,633
Basic earnings per share$2.38 $4.46 $5.92 
Diluted earnings per share$2.36 $4.38 $5.83 
Excluded from the dilutive securities shown above were options to purchase and shares to be paid out under share-based compensation plans of 150,421, 97,463 and 249,690 shares of common stock during 2025, 2024 and 2023, respectively. These exclusions were made if the exercise prices of these options are greater than the average market price of our common stock for the period, if the number of shares we can repurchase under the treasury stock method exceeds the weighted shares outstanding in the options, or if we have a net loss, as these effects are anti-dilutive.

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.