Net Loss Per Share of Common Stock

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Net Loss Per Share of Common Stock

Net Loss Per Share of Common Stock

Basic and Diluted Net Loss per Share

The following table summarizes the computation of basic and diluted net loss per share (in thousands, except share and per share data):

	Year ended December 31,
	2018			2017
Net loss	$	(17,453	)	$	(23,039	)
Weighted-average shares used to compute basic and diluted net loss per share*	7,950,284			3,467,096
Net loss per share, basic and diluted*	$	(2.20	)	$	(6.65	)

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* Calculated based on the 1-for-18 reverse stock split effected October 4, 2018.

Unvested shares for the years ended December 31, 2018 and December 31, 2017 were excluded from the weighted-average shares used to compute basic and diluted net loss per share.

The following common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	December 31,
	2018	2017
Stock options	2,641,198	3,001,929
Shares subject to repurchase	74,019	16,117
Unvested restricted stock units	53,436	—
Estimated ESPP shares	89,606	—
Redeemable convertible preferred stock	—	12,066,654
Redeemable convertible preferred stock warrants	—	160,657
Common stock warrants	118,122	124,326