(6) Net Loss per Share

Basic net loss per share is computed on the basis of the weighted average number of shares of common stock outstanding during the period. Diluted net loss per share is computed based on the weighted average number of common shares outstanding plus the effect of potentially dilutive common shares outstanding during the period using the treasury stock method and the if-converted method. Potentially dilutive common shares include outstanding stock options and share-based awards.

The following table reconciles the numerators and denominators used in the computations of both basic and diluted net loss per share:

	Three Months Ended March 31,						Nine Months Ended March 31,
(In thousands, except per share data)	2018			2017			2018			2017
Numerator:
Amounts attributable to Astrotech Corporation, basic and diluted:
Loss before income taxes	$	(2,855	)	$	(2,845	)	$	(8,998	)	$	(8,966	)
Income tax benefit		—			(2	)		—			(2	)
Net loss		(2,855	)		(2,847	)		(8,998	)		(8,968	)
Less: Net loss attributable to noncontrolling interest		—			(47	)		—			(150	)
Net loss attributable to Astrotech Corporation	$	(2,855	)	$	(2,800	)	$	(8,998	)	$	(8,818	)
Denominator:
Denominator for basic and diluted net loss per share attributable to Astrotech Corporation — weighted average common stock outstanding		4,060			4,033			4,059			4,095
Basic and diluted net loss per common share:
Net loss attributable to Astrotech Corporation	$	(0.70	)	$	(0.69	)	$	(2.22	)	$	(2.15	)

All unvested restricted stock awards for the nine months ended March 31, 2018, are not included in diluted net loss per share, as the impact to net loss per share would be anti-dilutive. Options to purchase 362,171 shares of common stock at exercise prices ranging from $1.60 to $16.00 per share outstanding as of March 31, 2018, were not included in diluted net loss per share, as the impact to net loss per share would be anti-dilutive.