Three Months Ended September 30,

Nine Months Ended September 30,

2022

2021

2022

2021

Net earnings (loss) attributable to Kirby

$

39,091

$

(264,730

)

$

84,982

$

(257,915

)

Undistributed earnings allocated to restricted shares

(18

)

—

(27

)

—

Earnings (loss) available to Kirby common stockholders – basic

39,073

(264,730

)

84,955

(257,915

)

Undistributed earnings allocated to restricted shares

18

—

27

—

Undistributed earnings reallocated to restricted shares

(18

)

—

(27

)

—

Earnings (loss) available to Kirby common stockholders – diluted

$

39,073

$

(264,730

)

$

84,955

$

(257,915

)

Shares outstanding:

Weighted average common stock issued and outstanding

59,923

60,109

60,107

60,095

Weighted average unvested restricted stock

(27

)

(47

)

(19

)

(51

)

Weighted average common stock outstanding – basic

59,896

60,062

60,088

60,044

Dilutive effect of stock options and restricted stock units

286

—

281

—

Weighted average common stock outstanding – diluted

60,182

60,062

60,369

60,044

Net earnings (loss) per share attributable to Kirby common stockholders:

Basic

$

0.65

$

(4.41

)

$

1.41

$

(4.30

)

Diluted

$

0.65

$

(4.41

)

$

1.41

$

(4.30

)