Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets

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Consolidated Balance Sheets - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Current assets:    
Cash and cash equivalents $ 6,825,592 $ 8,320,317
Marketable securities 16,267,629 22,131,936
Prepaid expenses and other current assets 2,053,500 988,799
Total current assets 25,146,721 31,441,052
Property and equipment, net 1,243,285 1,076,099
Operating lease right-of-use assets 3,202,124  
Other assets 355,420 355,420
Total assets 29,947,550 32,872,571
Current liabilities:    
Accounts payable 3,162,113 1,427,287
Accrued liabilities 2,158,740 4,369,732
Current portion of lease liabilities 622,483
Total current liabilities 5,943,336 5,797,019
Deferred rent   679,182
Warrant liabilities 2,982,034 20,781,663
Long-term portion of lease liabilities 3,465,348
Other liabilities 72,747 72,747
Total liabilities 12,463,465 27,330,611
Commitments and contingencies
Stockholders' equity:    
Preferred stock, $0.0001 par value, 25,000,000 shares authorized and none outstanding at March 31, 2019 and December 31, 2018
Common stock, $0.0001 par value, 200,000,000 shares authorized; 79,409,556 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively 7,941 7,941
Additional paid-in capital 205,207,985 204,884,211
Accumulated other comprehensive income (loss) 1,036 (30,300)
Accumulated deficit (187,732,877) (199,319,892)
Total stockholders' equity 17,484,085 5,541,960
Total liabilities and stockholders' equity $ 29,947,550 $ 32,872,571