Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets

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Consolidated Balance Sheets - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 4,879,136 $ 3,806,984
Marketable securities 16,829,854 31,354,170
Prepaid expenses and other current assets 2,229,897 1,017,645
Total current assets 23,938,887 36,178,799
Property and equipment, net 1,190,053 1,281,152
Other assets 164,519 164,519
Total assets 25,293,459 37,624,470
Current liabilities:    
Accounts payable 1,961,368 1,549,845
Accrued liabilities 1,669,543 2,868,352
Total current liabilities 3,630,911 4,418,197
Deferred rent 992,660 994,439
Warrant liabilities 9,581,916 12,698,980
Total liabilities 14,205,487 18,111,616
Commitments and contingencies
Stockholders' equity:    
Preferred stock, $0.0001 par value, 25,000,000 shares authorized and none outstanding at June 30, 2017 and December 31, 2016
Common stock, $0.0001 par value, 200,000,000 shares and 100,000,000 shares authorized at June 30, 2017 and December 31, 2016, respectively; 41,656,006 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively 4,166 4,166
Additional paid-in capital 166,405,967 165,678,164
Accumulated other comprehensive loss (19,299) (51,666)
Accumulated deficit (155,302,862) (146,117,810)
Total stockholders' equity 11,087,972 19,512,854
Total liabilities and stockholders' equity $ 25,293,459 $ 37,624,470