Earnings Per Share

6 Months Ended

Jun. 30, 2024

(9) Earnings Per Share

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


	Three Months Ended June 30,						Six Months Ended June 30,
	2024			2023			2024			2023
Net earnings attributable to Kirby	$	83,854		$	57,367		$	153,922		$	98,065
Undistributed earnings allocated to restricted shares		(13	)		(22	)		(13	)		(21	)
Earnings available to Kirby common stockholders – basic		83,841			57,345			153,909			98,044
Undistributed earnings allocated to restricted shares		13			22			13			21
Undistributed earnings reallocated to restricted shares		(13	)		(22	)		(13	)		(21	)
Earnings available to Kirby common stockholders – diluted	$	83,841		$	57,345		$	153,909		$	98,044

Shares outstanding:
Weighted average common stock issued and outstanding		58,190			59,829			58,329			59,905
Weighted average unvested restricted stock		(9	)		(23	)		(5	)		(13	)
Weighted average common stock outstanding – basic		58,181			59,806			58,324			59,892
Dilutive effect of stock options and restricted stock units		411			279			379			287
Weighted average common stock outstanding – diluted		58,592			60,085			58,703			60,179

Net earnings per share attributable to Kirby common stockholders:
Basic	$	1.44		$	0.96		$	2.64		$	1.64
Diluted	$	1.43		$	0.95		$	2.62		$	1.63

Certain outstanding options to purchase approximately 279,000 shares of common stock were excluded in the computation of diluted earnings per share as of June 30, 2023, as such stock options would have been antidilutive. There were no antidilutive stock options as of June 30, 2024. There were no antidilutive RSUs as of June 30, 2024 and 2023.