Earnings Per Share

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic earnings per share (“EPS”) is computed by dividing net income attributable to Amkor common stockholders by the weighted-average number of common shares outstanding during the period. The weighted-average number of common shares outstanding is reduced for treasury stock.

Diluted EPS is computed based on the weighted-average number of common shares outstanding plus the effect of dilutive potential common shares outstanding during the period. Dilutive potential common shares include outstanding stock options, performance-vested restricted stock units, time-vested restricted stock units and unvested restricted shares.

The following table summarizes the computation of basic and diluted EPS:

	For the Three Months Ended March 31,
	2024		2023
	(In thousands, except per share data)
Net income attributable to Amkor common stockholders	$	58,897	$	45,351
Weighted-average number of common shares outstanding - basic	246,008		245,330
Effect of dilutive securities:
Share-based awards	1,606		1,757
Weighted-average number of common shares outstanding - diluted	247,614		247,087
Net income attributable to Amkor per common share:
Basic	$	0.24	$	0.18
Diluted	0.24		0.18

The following table summarizes the potential shares of common stock that were excluded from diluted EPS because the effect of including these potential shares was anti-dilutive:

	For the Three Months Ended March 31,
	2024	2023
	(In thousands)
Share-based awards	11	—