The Company’s basic net income (loss) per share is calculated by dividing the net income (loss) by the weighted-average number of shares of common stock outstanding for the period. For the three months ended September 30, 2020, the Company’s diluted net income per share is calculated by dividing the net income by the sum of weighted average number of shares of common stock outstanding for the period and the dilutive effect of common stock equivalents. Dilutive shares of common stock are determined by applying the treasury stock method. For the three months ended September 30, 2019 and the nine months ended September 30, 2020 and 2019, common stock equivalents are excluded from the calculation of diluted net loss per share as their effect is antidilutive. For purposes of the calculation of diluted net income (loss) per share, options to purchase common stock, restricted stock units and unvested shares of common stock issued upon the early exercise of stock options are considered common stock equivalents.

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

	Three Months Ended					Nine Months Ended
	September 30, 2020		September 30, 2019			September 30, 2020			September 30, 2019
Numerator:
Net income (loss)	$	12,947	$	(25,155	)	$	(84,813	)	$	(44,220	)
Denominator:
Weighted-average shares used in computing net income (loss) per share, basic		125,687		116,681			122,837			114,064
Net income (loss) per share, basic	$	0.10	$	(0.22	)	$	(0.69	)	$	(0.39	)

Weighted-average shares used in computing net income (loss) per share, basic		125,687		116,681			122,837			114,064
Common stock equivalents		10,982		—			—			—
Weighted-average shares used in computing net income (loss) per share, diluted		136,669		116,681			122,837			114,064
Net income (loss) per share, diluted	$	0.09	$	(0.22	)	$	(0.69	)	$	(0.39	)

Common shares that would be excluded from the calculation of diluted net loss per share because of their anti-dilutive effect are as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Restricted stock units and stock options		688		16,189		14,229		16,189
Unvested shares of common stock issued upon early exercise of stock options and business acquisition		—		45		2		45
Total		688		16,234		14,231		16,234