Net (Loss) Income per Share Attributable to Common Stockholders

Basic net (loss) income per share is computed by dividing net income attributable to common shareholders by the weighted-average number of common shares outstanding during the period. For the three and six months ended June 29, 2019 and June 30, 2018, we applied the two-class method to calculate basic and diluted net (loss) income per share of common stock, as our Series A Redeemable Convertible Preferred Stock (Series A Preferred Stock) is a participating security. The two-class method is an earnings allocated formula that treats a participating security as having rights to earnings that otherwise would have been available to common stockholders. We compute diluted net (loss) income per common share using net (loss) income as the “control number” in determining whether potential common shares are dilutive, after giving consideration to all potentially dilutive common shares, including stock options, unvested restricted stock outstanding during the period and potential issuance of stock upon the conversion of our Series A Preferred Stock, including accrued dividends, outstanding during the period, except where the effect of such securities would be anti-dilutive.

The calculations of basic and diluted net (loss) income per share and basic and diluted weighted-average shares outstanding for the three and six months ended June 29, 2019 and June 30, 2018 were as follows (in thousands, except per share data):



	Three Months Ended						Six Months Ended
	June 29, 2019			June 30, 2018			June 29, 2019			June 30, 2018
Numerator:
Basic:
Net (loss) income attributable to common stockholders	$	(65,506	)	$	(834	)	$	(67,252	)	$	1,020
Diluted:
Net (loss) income attributable to common stockholders	$	(65,506	)	$	(834	)	$	(67,252	)	$	1,020
Plus: undistributed earnings allocated to participating securities	—			—			—			1,508
Less: undistributed earnings reallocated to participating securities	—			—			—			(1,496		)
Net (loss) income attributable to common stockholders	$	(65,506	)	$	(834	)	$	(67,252	)	$	1,032

Denominator:
Weighted-average shares outstanding - basic	32,537			30,591			32,373			30,792

Dilutive impact from:
Options outstanding	—			—			—			1,967
Restricted stock units	—			—			—			727
Weighted-average shares outstanding - dilutive	32,537			30,591			32,373			33,486

Net (loss) income per share attributable to common stockholders (Basic):	$	(2.01	)	$	(0.03	)	$	(2.08	)	$	0.03
Net (loss) income per share attributable to common stockholders (Diluted):	$	(2.01	)	$	(0.03	)	$	(2.08	)	$	0.03

The following equity shares were excluded from the calculation of diluted net income per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands).



	Three Months Ended		Six Months Ended
	June 29, 2019	June 30, 2018	June 29, 2019	June 30, 2018
Stock options	3,189	4,002	3,189	846
Restricted stock units	2,412	2,514	2,412	684
Series A Redeemable Convertible Preferred Stock (as converted to common stock)	5,183	4,915	5,183	4,915

The Series A Preferred Stock is considered anti-dilutive due to the fact that the two-class method was more dilutive when calculating dilutive net (loss) income per share attributable to common stockholders.