Net Income (Loss) Per Share Attributable to Vertex Common Shareholders

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Net Income (Loss) Per Share Attributable to Vertex Common Stockholders

Net Income (Loss) Per Share Attributable to Vertex Common Shareholders

The following table sets forth the computation of basic and diluted net income (loss) attributable to Vertex per common share in conformity with the two-class method for the three months ended March 31, 2013 and 2012:

	Three Months Ended March 31,
	2013			2012
	(in thousands, except per share amounts)
Basic net income (loss) attributable to Vertex per common share calculation:
Net income (loss) attributable to Vertex common shareholders	$	(308,016	)	$	91,590
Less: Undistributed earnings allocated to participating securities	—			(906		)
Net income (loss) attributable to Vertex common shareholders—basic	$	(308,016	)	$	90,684
Basic weighted-average common shares outstanding	215,421			208,018
Basic net income (loss) attributable to Vertex per common share	$	(1.43	)	$	0.44
Diluted net income (loss) attributable to Vertex per common share calculation:
Net income (loss) attributable to Vertex common shareholders	$	(308,016	)	$	91,590
Less: Undistributed earnings allocated to participating securities	—			(860		)
Plus: Interest expense and amortization of deferred issuance costs related to convertible senior subordinated notes	—			3,749
Net income (loss) attributable to Vertex common shareholders—diluted	$	(308,016	)	$	94,479
Weighted-average shares used to compute basic net income (loss) per common share	215,421			208,018
Effect of potentially dilutive securities:
Convertible senior subordinated notes	—			8,891
Stock options	—			2,289
Other	—			66
Weighted-average shares used to compute diluted net income (loss) per common share	215,421			219,264
Diluted net income (loss) attributable to Vertex per common share	$	(1.43	)	$	0.43

The Company did not include the securities described in the following table in the computation of the diluted net income (loss) attributable to Vertex per common share calculations because the effect would have been anti-dilutive during each such period:

	Three Months Ended March 31,
	2013	2012
	(in thousands)
Stock options	21,848	13,768
Convertible senior subordinated notes	8,192	—
Unvested restricted stock and restricted stock units	2,682	16