Three Months Ended September 30,

Nine Months Ended September 30,

2021

2020

2021

2020

Net earnings (loss) attributable to Kirby

$

(264,730

)

$

27,489

$

(257,915

)

$

(294,750

)

Undistributed earnings allocated to restricted shares

—

(57

)

—

Earnings (loss) available to Kirby common stockholders – basic

(264,730

)

27,432

(257,915

)

(294,750

)

Undistributed earnings allocated to restricted shares

—

57

—

Undistributed earnings reallocated to restricted shares

—

(57

)

—

Earnings (loss) available to Kirby common stockholders – diluted

$

(264,730

)

$

27,432

$

(257,915

)

$

(294,750

)

Shares outstanding:

Weighted average common stock issued and outstanding

60,109

60,038

60,095

60,015

Weighted average unvested restricted stock

(47

)

(123

)

(51

)

(112

)

Weighted average common stock outstanding – basic

60,062

59,915

60,044

59,903

Dilutive effect of stock options and restricted stock units

—

16

—

Weighted average common stock outstanding – diluted

60,062

59,931

60,044

59,903

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

Basic

$

(4.41

)

$

0.46

$

(4.30

)

$

(4.92

)

Diluted

$

(4.41

)

$

0.46

$

(4.30

)

$

(4.92

)