Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Calculation of Basic and Diluted Net Loss Per Share

The table presents the calculation of basic and diluted net loss per share as follows (in thousands, except per share data):

	Years Ended December 31,
	2019			2018			2017
Numerator:
Net loss allocable to common stockholders	$	(59,937	)	$	(8,857	)	$	(63,509	)
Denominator:
Weighted-average shares used in computing net loss per share, basic and diluted		115,218			104,618			28,308
Net loss per share, basic and diluted	$	(0.52	)	$	(0.08	)	$	(2.24	)

Schedule of Antidilutive Securities Excluded from Calculation of Diluted Net Loss Per Share

The potential common shares that were excluded from the calculation of diluted net loss per share because their effect would have been antidilutive for the periods presented are as follows (in thousands):

	Years Ended December 31,
	2019		2018		2017
Equity awards to purchase common stock		15,668		20,057		26,608
Unvested shares of common stock issued upon early exercise of stock options and business acquisition		31		70		57
Warrants to purchase common stock		—		—		184
Total		15,699		20,127		26,849