Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets

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Consolidated Balance Sheets - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 30,819,397 $ 24,184,140
Short-term marketable securities 8,831,981  
Prepaid expenses and other current assets 5,327,699 6,575,375
Total current assets 44,979,077 30,759,515
Long-term marketable securities 18,686,836  
Property and equipment, net 1,004,389 1,099,948
Operating lease right-of-use assets 2,930,022 3,043,826
Other assets 105,420 105,420
Total assets 67,705,744 35,008,709
Current liabilities:    
Accounts payable 3,019,097 2,622,272
Accrued liabilities 2,237,185 6,803,789
Current portion of lease liabilities 638,051 631,889
Total current liabilities 5,894,333 10,057,950
Warrant liabilities 44,349,846 6,068,978
Long-term portion of lease liabilities 3,115,284 3,264,128
Other liabilities 72,747 72,747
Total liabilities 53,432,210 19,463,803
Commitments and contingencies
Stockholders' equity:    
Preferred stock, $0.0001 par value, 25,000,000 shares authorized and none outstanding at June 30, 2020 and December 31, 2019
Common stock, $0.0001 par value, 125,000,000 shares authorized, 27,804,232 shares issued and outstanding at June 30, 2020; 200,000,000 shares authorized, 15,332,042 shares issued and outstanding at December 31, 2019 2,780 1,533
Additional paid-in capital 251,587,990 227,657,758
Accumulated other comprehensive loss (7,129)  
Accumulated deficit (237,310,107) (212,114,385)
Total stockholders' equity 14,273,534 15,544,906
Total liabilities and stockholders' equity $ 67,705,744 $ 35,008,709