Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets

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Consolidated Balance Sheets - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 10,955,352 $ 6,995,046
Marketable securities 26,645,137 39,858,864
Prepaid expenses and other current assets 1,803,381 1,848,063
Total current assets 39,403,870 48,701,973
Property and equipment, net 1,117,128 1,093,903
Other assets 355,420 393,603
Total assets 40,876,418 50,189,479
Current liabilities:    
Accounts payable 2,508,770 1,302,431
Accrued liabilities 2,931,501 3,118,237
Total current liabilities 5,440,271 4,420,668
Deferred rent 684,948 704,240
Warrant liabilities 35,379,814 13,549,437
Other liabilities 72,747 321,689
Total liabilities 41,577,780 18,996,034
Commitments and contingencies
Stockholders' (deficit) equity:    
Preferred stock, $0.0001 par value, 25,000,000 shares authorized and none outstanding at September 30, 2018 and December 31, 2017
Common stock, $0.0001 par value, 200,000,000 shares authorized; 79,409,556 and 73,656,006 shares issued and outstanding at September 30, 2018 and December 31, 2017, respectively 7,941 7,366
Additional paid-in capital 204,565,660 192,896,367
Accumulated other comprehensive loss (19,375) (74,820)
Accumulated deficit (205,255,588) (161,635,468)
Total stockholders' (deficit) equity (701,362) 31,193,445
Total liabilities and stockholders' equity $ 40,876,418 $ 50,189,479