Basic net loss per share is calculated utilizing the weighted average number of common shares outstanding during the periods presented. Diluted net loss per share is calculated utilizing the weighted average number of common shares outstanding during the periods presented adjusted for the effect of dilutive common stock equivalents.

The following table sets forth the computation of basic and diluted loss per share data:

	Three Months Ended
	April 3,			March 28,
	2021			2020
Numerator:
Net loss attributable to WW International, Inc.	$	(18,227	)	$	(6,063	)
Denominator:
Weighted average shares of common stock outstanding		69,084			67,436
Effect of dilutive common stock equivalents		—			—
Weighted average diluted common shares outstanding		69,084			67,436
Net loss per share attributable to WW International, Inc.
Basic	$	(0.26	)	$	(0.09	)
Diluted	$	(0.26	)	$	(0.09	)

The number of anti-dilutive common stock equivalents excluded from the calculation of the weighted average number of common shares for diluted net loss per share was 6,360 and 4,042 for the three months ended April 3, 2021 and March 28, 2020, respectively.