16. Net Loss per Share

The following table sets forth the computation of basic and diluted net loss per share for 2019, 2018 and 2017 (in thousands, except per share data):



	Year ended December 31,
	2019		2018		2017
Numerator:
Net loss	$	(48,846)	$	(43,084)	$	(53,362)
Denominator:
Weighted–average shares outstanding		109,973		102,527		93,771
Less: weighted average shares subject to repurchase		—		—		(1)
Weighted–average shares used to compute basic and diluted net loss per share		109,973		102,527		93,770
Basic and diluted net loss per share	$	(0.44)	$	(0.42)	$	(0.57)

Basic net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding for the period. Because we have reported a net loss for 2019, 2018 and 2017, the number of shares used to calculate diluted net loss per common share is the same as the number of shares used to calculate basic net loss per common share for those periods presented because the potentially dilutive shares would have been anti-dilutive if included in the calculation.

The following potentially dilutive securities outstanding have been excluded from the computation of diluted weighted-average shares outstanding because such securities have an antidilutive impact due to losses reported (in common stock equivalent shares):


	December 31,
	2019	2018	2017
Stock options outstanding, net of unvested exercised stock options	2,898,977	4,496,557	7,738,496
Unvested restricted stock units	12,639,066	12,303,913	12,906,030
ESPP shares	478,917	478,026	726,643
Stock-settled bonus shares	871,391	1,234,474	1,185,373
Total potentially dilutive securities	16,888,351	18,512,970	22,556,542