The following summarizes the calculation of basic earnings per share for the three months ended March 31, 2016 and 2015 (in thousands, except per share amounts):



	Three Months Ended March 31, 2016									Three Months Ended March 31, 2015
	Continuing Operations			Discontinued Operations			Net			Continuing Operations		Discontinued Operations		Net
Income (loss)	$	(6,246	)	$	(2	)	$	(6,248	)	$	5,776	$	—	$	5,776
less: Income attributable to noncontrolling interests	9,020			—			9,020			4,310		—		4,310
Income (loss) attributable to SemGroup	$	(15,266	)	$	(2	)	$	(15,268	)	$	1,466	$	—	$	1,466
Weighted average common stock outstanding	43,870			43,870			43,870			43,717		43,717		43,717
Basic earnings (loss) per share	$	(0.35	)	$	—		$	(0.35	)	$	0.03	$	—	$	0.03

The following summarizes the calculation of diluted earnings per share for the three months ended March 31, 2016 and 2015 (in thousands, except per share amounts):



	Three Months Ended March 31, 2016									Three Months Ended March 31, 2015
	Continuing Operations			Discontinued Operations			Net			Continuing Operations		Discontinued Operations		Net
Income (loss)	$	(6,246	)	$	(2	)	$	(6,248	)	$	5,776	$	—	$	5,776
less: Income attributable to noncontrolling interests	9,020			—			9,020			4,310		—		4,310
Income (loss) attributable to SemGroup	$	(15,266	)	$	(2	)	$	(15,268	)	$	1,466	$	—	$	1,466
Weighted average common stock outstanding	43,870			43,870			43,870			43,717		43,717		43,717
Effect of dilutive securities	—			—			—			223		223		223
Diluted weighted average common stock outstanding	43,870			43,870			43,870			43,940		43,940		43,940
Diluted earnings (loss) per share	$	(0.35	)	$	—		$	(0.35	)	$	0.03	$	—	$	0.03

For the three months March 31, 2016, we experienced a net loss, as such the unvested equity compensation awards would have been antidilutive and, therefore, were not included in the computation of diluted earnings per share.