Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Net Loss Per Share

Potentially dilutive shares not included in the calculation of dilutive EPS

	June 30,
	2015	2014
	(in thousands)
Options to purchase common stock	9,402	6,660
Warrants	840	435
Common stock subject to repurchase	1,499	1,857
Convertible preferred stock	31,397	27,048
	43,138	36,000