Net Loss Per Share Attributable to Common Stockholders (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of Earnings Per Share, Basic and Diluted

The shares issued in the IPO, the shares issued pursuant to the exercise by the underwriters of an option to purchase additional shares, and the shares of Class A and Class B common stock issued upon conversion of the outstanding shares of convertible preferred stock in the IPO are included in the table below weighted for the period outstanding:



	Year ended December 31,
	2019						2018				2017
	Class A⁽¹⁾			Class B⁽²⁾			Class A	Class B⁽²⁾			Class A	Class B⁽²⁾
	(in thousands, except per share amounts)
Net loss attributable to common stockholders	$	(12,084	)	$	(39,466	)	N/A	$	(30,935	)	N/A	$	(32,450	)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	16,022			52,328			N/A	24,376			N/A	23,402
Net loss per share attributable to common stockholders, basic and diluted	$	(0.75	)	$	(0.75	)	N/A	$	(1.27	)	N/A	$	(1.39	)

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(1)	Class A common stock includes the issuance of 12.9 million shares of Class A common stock issued by us in connection with our IPO and shares issued upon the exercise of options subsequent to our IPO.

(2)

Class B common stock includes, for all periods presented, the conversion of all of our preferred stock into an aggregate of 53.6 million shares of our Class B common stock upon closing of the IPO.

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The potential shares of common stock that were excluded from the computation of diluted net loss per share attributable to common stockholders for the period presented because including them would have been antidilutive are as follows:



	Number of Shares
	As of December 31,
	2019	2018
	(in thousands)
Convertible preferred stock	—	53,630
Stock options	11,269	7,847
RSUs	1,641	—
Early exercised stock options	200	245
Convertible common stock warrants	183	—
Convertible preferred stock warrants	—	518
Shares issuable pursuant to the ESPP	247	—
Total	13,540	62,240