Net Loss per Share

3 Months Ended

Mar. 31, 2018

Net Loss per Share

Net Loss per Share

2. Net Loss per Share

Basic net loss per share is computed by dividing net loss by the weighted-average number of shares of outstanding, less ordinary shares subject to forfeiture. Diluted net loss per share is computed by dividing net loss by the weighted-average number of shares outstanding, less ordinary shares subject to forfeiture, plus all additional ordinary shares that would have been outstanding, assuming dilutive potential ordinary shares had been issued for other dilutive securities.

For the three months ended March 31, 2018 and 2017, diluted and basic net loss per share was identical since potential ordinary shares were excluded from the calculation, as their effect was anti-dilutive.

Anti-dilutive Securities

The following ordinary equivalent shares were not included in the computation of diluted net loss per share because their effect was anti-dilutive:

	Three Months Ended
	March 31,
(In thousands)	2018	2017
Share issuances under equity incentive plans and ESPP	3,916	3,386
Restricted shares	5	26
Share issuances upon the conversion of convertible senior notes	6,676	6,676
Total	10,597	10,088

In addition, there were 1,305,000 shares that are subject to performance‑based vesting criteria which have been excluded from the ordinary equivalent shares table above as of March 31, 2018 and 2017, respectively.