(10) Earnings Per Share

The following table presents the components of basic and diluted earnings per share (in thousands, except per share amounts):

 

 

 

Year Ended December 31,

 

 

 

2025

 

 

2024

 

 

2023

 

Net earnings attributable to Kirby

 

$

354,569

 

 

$

286,707

 

 

$

222,935

 

Undistributed earnings allocated to restricted shares

 

 

(51

)

 

 

(37

)

 

 

(62

)

Earnings available to Kirby common stockholders — basic

 

 

354,518

 

 

 

286,670

 

 

 

222,873

 

Undistributed earnings allocated to restricted shares

 

 

51

 

 

 

37

 

 

 

62

 

Undistributed earnings reallocated to restricted shares

 

 

(50

)

 

 

(36

)

 

 

(62

)

Earnings available to Kirby common stockholders — diluted

 

$

354,519

 

 

$

286,671

 

 

$

222,873

 

 

 

 

 

 

 

 

 

 

 

Shares outstanding:

 

 

 

 

 

 

 

 

 

Weighted average common stock issued and outstanding

 

 

55,701

 

 

 

57,954

 

 

 

59,548

 

Weighted average unvested restricted stock

 

 

(7

)

 

 

(7

)

 

 

(17

)

Weighted average common stock outstanding — basic

 

 

55,694

 

 

 

57,947

 

 

 

59,531

 

Dilutive effect of stock options and restricted stock units

 

 

351

 

 

 

408

 

 

 

326

 

Weighted average common stock outstanding — diluted

 

 

56,045

 

 

 

58,355

 

 

 

59,857

 

 

 

 

 

 

 

 

 

 

 

Net earnings per share attributable to Kirby common stockholders:

 

 

 

 

 

 

 

 

 

Basic

 

$

6.37

 

 

$

4.95

 

 

$

3.74

 

Diluted

 

$

6.33

 

 

$

4.91

 

 

$

3.72

 

 

Diluted earnings per share was computed using the treasury stock method. Certain outstanding options to purchase approximately 33,000 shares of common stock were excluded in the computation of diluted earnings per share as of December 31, 2023 as such stock options would have been antidilutive. No options were antidilutive at December 31, 2025 and 2024. No RSUs were antidilutive at December 31, 2025, 2024 and 2023.

Historical Timeline

Fiscal YearFiled
2025Feb 17, 2026Showing above
2024Feb 18, 2025
2023Feb 20, 2024
2022Feb 21, 2023
2021Feb 18, 2022
2020Feb 23, 2021
2019Feb 24, 2020
2018Feb 26, 2019
2017Feb 26, 2018
2016Feb 23, 2017
2015Feb 22, 2016

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.