The following selected pro forma balance sheet data is derived from our balance sheet as of December 31, 2013 and gives retroactive effect to the completion of the underwritten offering, but does not give effect to other events that occurred since December 31, 2013 and thus may not be indicative of our current financial condition. The information should be read in conjunction with our balance sheet as of December 31, 2013 and related notes.

	Actual as of December 31, 2013		Adjustments Related to February 2014 Equity Financing (unaudited)		Pro Forma as of December 31, 2013 (unaudited)
ASSETS

Current assets:
Cash and cash equivalents	$	11,483,112	$	80,534,750	$	92,017,862
Short-term investments		27,084,980		—		27,084,980
Prepaid and other current assets		2,455,733		—		2,455,733
Total current assets		41,023,825		80,534,750		121,558,575
Non-current assets		476,230		—		476,230
Total assets	$	41,500,055	$	80,534,750	$	122,034,805

LIABILITIES AND STOCKHOLDERS’ EQUITY

Total current liabilities	$	30,838,688	$	—	$	30,838,688

Stockholders’ equity:

Common stock	$	42,118		$	13,225	$	55,343
Additional paid-in-capital		289,426,100			80,521,525		369,947,625
Treasury stock		(2,417,247	)		—		(2,417,247	)
Accumulated deficit		(276,389,604	)		—		(276,389,604	)
Total stockholders’ equity		10,661,367			80,534,750		91,196,117
Total liabilities and stockholders’ equity	$	41,500,055		$	80,534,750	$	122,034,805