Net Loss per Share

Basic net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock outstanding, less RSAs subject to forfeiture. Diluted net loss per share is computed by dividing net loss by the weighted average number of shares of common stock outstanding plus all additional common stock shares that would have been outstanding, assuming dilutive potential common stock shares had been issued for other dilutive securities. For periods of net loss, diluted and basic net loss per share are identical since potential common stock shares are excluded from the calculation, as their effect was anti-dilutive.

Anti-Dilutive Securities

In periods of net loss, the weighted average number of shares outstanding related to potentially dilutive securities, prior to the application of the treasury stock method, are excluded from the computation of diluted net loss per common share because including such shares would have an anti-dilutive effect.

The following shares were not included in the computation of diluted net loss per share (in thousands):



	Three months ended June 30,		Six months ended June 30,
	2018	2017	2018	2017
Shares of common stock issuable pursuant to equity awards outstanding under the Equity Incentive Plan	7,462	7,621	7,462	7,621
Shares of common stock issuable upon exercise of outstanding warrants	—	73	—	73
Total shares excluded as anti-dilutive	7,462	7,694	7,462	7,694