Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

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

	For the Three Months Ended March 31,
	2022		2021
	(In thousands, except per share data)
Net income attributable to Amkor common stockholders	$	170,663	$	119,809
Weighted-average number of common shares outstanding - basic	244,403		243,267
Effect of dilutive securities:
Share-based awards	1,597		1,862
Weighted-average number of common shares outstanding - diluted	246,000		245,129
Net income attributable to Amkor per common share:
Basic	$	0.70	$	0.49
Diluted	0.69		0.49