Three Months Ended June 30,

Six Months Ended June 30,

2022

2021

2022

2021

Net earnings attributable to Kirby

$

28,457

$

10,190

$

45,891

$

6,815

Undistributed earnings allocated to restricted shares

(10

)

(8

)

(11

)

(6

)

Earnings available to Kirby common stockholders – basic

28,447

10,182

45,880

6,809

Undistributed earnings allocated to restricted shares

10

8

11

6

Undistributed earnings reallocated to restricted shares

(10

)

(8

)

(11

)

(6

)

Earnings available to Kirby common stockholders – diluted

$

28,447

$

10,182

$

45,880

$

6,809

Shares outstanding:

Weighted average common stock issued and outstanding

60,222

60,101

60,202

60,088

Weighted average unvested restricted stock

(20

)

(48

)

(14

)

(53

)

Weighted average common stock outstanding – basic

60,202

60,053

60,188

60,035

Dilutive effect of stock options and restricted stock units

265

221

277

185

Weighted average common stock outstanding – diluted

60,467

60,274

60,465

60,220

Net earnings per share attributable to Kirby common stockholders:

Basic

$

0.47

$

0.17

$

0.76

$

0.11

Diluted

$

0.47

$

0.17

$

0.76

$

0.11