QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

12 Months Ended

Dec. 31, 2011

QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

(13) QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

        The following table sets forth unaudited quarterly statement of operations data for each of the eight quarters ended December 31, 2011. In the opinion of management, this information has been prepared on the same basis as the audited financial statements appearing elsewhere in this Form 10-K, and all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts stated below to present fairly the unaudited quarterly results of operations. The quarterly data should be read in conjunction with our audited financial statements and the notes to the financial statements appearing elsewhere in this Form 10-K.

	Quarter Ended
	March 31,			June 30,			September 30,			December 31,
	(Amounts in thousands, except per share data)
2011
Revenue	$	1,040		$	1,042		$	1,039		$	1,042
Cost of revenue		6			6			6			6
Research and development		2,989			5,197			6,110			7,672
General and administrative		2,150			1,830			1,951			2,206
Sales and marketing		297			651			815			1,094
Loss from operations		(4,402	)		(6,642	)		(7,843	)		(9,936	)
Interest income		34			22			75			38
Interest expense		(5	)		(5	)		(5	)		(6	)
Net loss	$	(4,373	)	$	(6,625	)	$	(7,773	)	$	(9,904	)
Net loss per share—basic and diluted	$	(0.08	)	$	(0.13	)	$	(0.15	)	$	(0.18	)
Weighted average common shares outstanding—basic and diluted		51,930			52,010			52,443			53,647
2010
Revenue	$	1,299		$	1,314		$	1,356		$	1,375
Cost of revenue		6			6			6			6
Research and development		1,795			2,123			2,635			2,470
General and administrative		1,512			1,339			1,796			1,683
Sales and marketing		109			330			315			1,039
Loss from operations		(2,123	)		(2,484	)		(3,396	)		(3,823	)
Interest income, net		(1	)		7			14			6
Other income		—			—			—			244
Net loss	$	(2,124	)	$	(2,477	)	$	(3,382	)	$	(3,573	)
Net loss per share—basic and diluted	$	(0.06	)	$	(0.06	)	$	(0.08	)	$	(0.08	)
Weighted average common shares outstanding—basic and diluted		35,607			39,067			40,155			46,869