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

3 Months Ended

Sep. 30, 2013

Potential gross common equivalent shares

Net Loss Per Share Attributable to Vertex Common Shareholders

Basic net loss attributable to Vertex per common share is based upon the weighted-average number of common shares outstanding during the period, excluding restricted stock and restricted stock units that have been issued but are not yet vested. Diluted net loss attributable to Vertex per common share is based upon the weighted-average number of common shares outstanding during the period plus additional weighted-average common equivalent shares outstanding during the period when the effect is dilutive.

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



	Three Months Ended September 30,		Nine Months Ended September 30,
	2013	2012	2013	2012
	(in thousands)		(in thousands)
Stock options	16,807	20,226	16,807	20,226
Convertible senior subordinated notes	—	8,192	—	8,192
Unvested restricted stock and restricted stock units	2,838	2,222	2,838	2,222