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v2.4.0.8

Consolidated Balance Sheets (USD $) | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 33,569,198 | $ 47,743,155
Accounts receivable | 2,281,282 | 2,046,219
Prepaid expenses | 1,103,449 | 137,634
Total current assets | 36,953,929 | 49,927,008
Restricted cash | 404,850 | 404,850
Property and equipment, net | 4,469,882 | 3,267,796
Other assets | 147,246 | 147,246
Total assets | 41,975,907 | 53,746,900
Current liabilities: |  |
Accounts payable | 1,798,228 | 3,739,125
Accrued expenses | 939,811 | 1,237,025
Lease exit liability - current | 1,229,454 | 628,768
Deferred revenue - current | 21,298,318 | 24,123,176
Total current liabilities | 25,265,811 | 29,728,094
Lease exit liability | 8,378,184 | 9,445,171
Deferred rent liability | 2,888,688 | 2,801,653
Preferred stock warrant liability | 679,296 | 52,947
Deferred revenue, net of current portion | 8,812,342 | 19,956,343
Total liabilities | 46,024,321 | 61,984,208
Stockholders' equity (deficit): |  |
Common stock, $0.01 par value - 425,000,000 shares authorized, 2,124,624 and 1,098,914 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively | 21,246 | 10,989
Treasury stock, at cost; 14,381 shares at September 30, 2013 and December 31, 2012 | (57,742) | (57,742)
Additional paid-in capital | 165,569,134 | 164,334,646
Accumulated deficit | (172,528,254) | (175,472,403)
Total stockholders' equity (deficit) | (4,048,414) | (8,237,308)
Total liabilities and stockholders' equity (deficit) | 41,975,907 | 53,746,900
Series A-1 Convertible Preferred Stock [Member] |  |
Stockholders' equity (deficit): |  |
Convertible preferred stock | 268,748 | 268,748
Series A-2 Convertible Preferred Stock [Member] |  |
Stockholders' equity (deficit): |  |
Convertible preferred stock | 73,646 | 73,646
Series B Convertible Preferred Stock [Member] |  |
Stockholders' equity (deficit): |  |
Convertible preferred stock | 714,012 | 714,012
Series C Convertible Preferred Stock [Member] |  |
Stockholders' equity (deficit): |  |
Convertible preferred stock | 1,109,522 | 1,109,522
Series D-1 Convertible Preferred Stock [Member] |  |
Stockholders' equity (deficit): |  |
Convertible preferred stock | 144,462 | 144,462
Series D-2 Convertible Preferred Stock [Member] |  |
Stockholders' equity (deficit): |  |
Convertible preferred stock | $ 636,812 | $ 636,812

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