Three Months Ended June 30,

Six Months Ended June 30,

2023

2022

2023

2022

Net earnings attributable to Kirby

$

57,367

$

28,457

$

98,065

$

45,891

Undistributed earnings allocated to restricted shares

(22

)

(10

)

(21

)

(11

)

Earnings available to Kirby common stockholders – basic

57,345

28,447

98,044

45,880

Undistributed earnings allocated to restricted shares

22

10

21

11

Undistributed earnings reallocated to restricted shares

(22

)

(10

)

(21

)

(11

)

Earnings available to Kirby common stockholders – diluted

$

57,345

$

28,447

$

98,044

$

45,880

Shares outstanding:

Weighted average common stock issued and outstanding

59,829

60,222

59,905

60,202

Weighted average unvested restricted stock

(23

)

(20

)

(13

)

(14

)

Weighted average common stock outstanding – basic

59,806

60,202

59,892

60,188

Dilutive effect of stock options and restricted stock units

279

265

287

277

Weighted average common stock outstanding – diluted

60,085

60,467

60,179

60,465

Net earnings per share attributable to Kirby common stockholders:

Basic

$

0.96

$

0.47

$

1.64

$

0.76

Diluted

$

0.95

$

0.47

$

1.63

$

0.76