Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Computation of basic and diluted earnings per share

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



	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2013			2012			2013			2012
	(In thousands, except per share data)
Net income attributable to Amkor	$	25,349		$	22,317		$	68,458		$	34,672
Income allocated to participating securities	(155		)	(55		)	(511		)	(81		)
Net income available to Amkor common stockholders	25,194			22,262			67,947			34,591
Adjustment for dilutive securities on net income:
Net income reallocated to participating securities	7			55			78			81
Interest on 6.0% convertible notes due 2014, net of tax	907			4,026			8,533			12,077
Net income attributable to Amkor — diluted	$	26,108		$	26,343		$	76,558		$	46,749

Weighted average shares outstanding — basic	216,499			154,365			176,839			162,699
Effect of dilutive securities:
Stock options and restricted share awards	12			37			13			74
6.0% convertible notes due 2014	18,632			82,658			58,267			82,658
Weighted average shares outstanding — diluted	235,143			237,060			235,119			245,431
Net income attributable to Amkor per common share:
Basic	$	0.12		$	0.14		$	0.38		$	0.21
Diluted	0.11			0.11			0.33			0.19

Antidilutive effect of potential shares of common stock that were excluded from diluted earnings per share

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 antidilutive:



	For the Three Months Ended September 30,		For the Nine Months Ended September 30,
	2013	2012	2013	2012
	(In thousands)
Stock options and restricted share awards	4,951	4,856	5,152	4,597