The following is a summary of the basic and diluted net loss per share computation for the three months ended March 31, 2013 and 2012 (amounts in thousands, expect for shares and per share data):



	Three Months Ended March 31,
	2013			2012
Net loss from continuing operations attributable to stockholders	$	(137,918	)	$	(4,706	)
Less: dividends declared on preferred shares	(158		)	—
Net loss from continuing operations attributable to common stockholders	(138,076		)	(4,706		)
Net loss from discontinued operations attributable to common stockholders	(2		)	(322		)
Net loss attributable to common stockholders	$	(138,078	)	$	(5,028	)

Weighted average common shares outstanding (1)	153,339,174			23,609,509
Basic and diluted net loss per share from continuing operations attributable to common stockholders	$	(0.90	)	$	(0.20	)
Basic and diluted net loss per share from discontinued operations attributable to common stockholders	$	—		$	(0.01	)
Basic and diluted net loss per share attributable to common stockholders	$	(0.90	)	$	(0.21	)

(1) Weighted average shares are adjusted on a pro forma basis as if the purchase of 27.7 million shares of ARCT III common stock for cash, purchased in conjunction with the Merger, had been completed at the beginning of the period. Weighted average shares excluding this pro forma adjustment was 171,049,690 and net loss per share was $(0.81) per share, basic and diluted.