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Net Loss Per Ordinary Share

12 Months Ended

Dec. 31, 2018

9. NET LOSS PER ORDINARY SHARE

Basic loss per share is computed by dividing net loss attributable to ordinary shareholders by the weighted-average number of ordinary shares outstanding:

	Year Ended December 31,
	2018			2017			2016
	(in thousands except share and per share data)
Numerator:
Net loss attributable to ordinary shareholders	$	(146,653	)	$	(101,980	)	$	(55,660	)
Denominator:
Weighted-average ordinary shares outstanding		28,970,404			26,513,382			22,800,628
Net loss per share, basic and diluted	$	(5.06	)	$	(3.85	)	$	(2.44	)

The Company’s potentially dilutive shares, which include outstanding share options to purchase ordinary shares and restricted share units, are considered to be ordinary share equivalents and are only included in the calculation of diluted net loss per share when their effect is dilutive.

The following potential ordinary shares, presented based on amounts outstanding at each period end, were excluded from the calculation of diluted net loss per share attributable to ordinary shareholders for the periods indicated because including them would have had an anti-dilutive effect:

	As of December 31,
	2018		2017
Options to purchase ordinary shares		4,016,590		3,767,130
RSUs		408,521		154,459
Series A preferred shares		3,901,348		3,901,348