Stockholders' Equity and Warrants (Tables)

3 Months Ended

Mar. 31, 2013

Changes in Stockholders' Equity

The changes in stockholders’ equity for the three-month period ended March 31, 2013 were as follows:

	Common Stock				Additional Paid-in Capital			Accumulated Other Comprehensive Income			Accumulated Deficit			Total
$ in thousands	Shares		Amount
Balance, January 1, 2013		167,075,758	$	167	$	890,499		$	20		$	(777,835	)	$	112,851
Issuance of common stock pursuant to ARIAD stock plans		986,523		1		1,521									1,522
Issuance of common stock, net of issuance costs		16,489,893		17		310,020									310,037
Stock-based compensation						5,610									5,610
Payment of tax withholding obligations related to stock-based compensation						(1,392	)								(1,392	)
Net unrealized losses on marketable securities									(5	)					(5	)
Cumulative translation adjustment									23						23
Net loss												(64,670	)		(64,670	)
Balance, March 31, 2013		184,552,174	$	185	$	1,206,258		$	38		$	(842,505	)	$	363,976