Net loss per share

3 Months Ended

Mar. 31, 2013

Net loss per share

Net loss per share

9. Net loss per share

Basic and diluted net loss per common share is calculated by dividing net loss applicable to common stockholders by the weighted average number of common shares outstanding during the period, without consideration for common stock equivalents. The Company’s potentially dilutive shares, which include preferred stock, outstanding stock options and restricted stock, are considered to be common stock equivalents and are only included in the calculation of diluted net loss per share when their effect is dilutive.

The amounts in the table below were excluded from the calculation of diluted net loss per share, prior to the use of the treasury stock method, due to their anti-dilutive effect (in thousands):

	Three Months Ended		Period from April 5, 2011 (inception) to
	March 31, 2013	March 31, 2012	March 31, 2013
Series A Preferred Stock	—	3,065	—
Outstanding stock options and restricted stock units	1,808	661	1,808
Founders’ stock	1,481	2,139	1,481