Quarterly report pursuant to Section 13 or 15(d)

Unaudited Condensed Balance Sheets

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Unaudited Condensed Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Current assets:    
Cash and cash equivalents $ 19,150 $ 11,439
Short-term investments 16,080 32,718
Prepaid expenses and other current assets 858 7,251
Restricted cash 55 55
Total current assets 36,143 51,463
Other assets 812 812
Deferred offering costs 102 106
Restricted cash 273 273
Property and equipment, net 460 516
Operating lease right-of-use asset (See Note 7) 3,284 0
Total assets 41,074 53,170
Current liabilities:    
Accounts payable 3,806 3,653
Accrued expenses 3,414 2,103
Deferred revenue 0 121
Operating lease liability, current portion (See Note 7) 28 0
Total current liabilities 7,248 5,877
Warrant liabilities 5,459 986
Loan payable expected to be refinanced 0 15,082
Convertible debt and derivative liability (See Note 6) 14,592 0
Operating lease liability (See Note 7) 3,373 0
Total liabilities 30,672 21,945
Commitments and contingencies
Stockholders’ equity:    
Preferred stock, $0.001 par value, authorized 5,000,000 shares as of June 30, 2019 and December 31, 2018; 0 shares issued and outstanding as of June 30, 2019 and December 31, 2018 0 0
Common stock, $0.001 par value, 250,000,000 shares authorized as of June 30, 2019, and 125,000,000 shares authorized as of December 31, 2018; 54,520,131 and 47,971,989 shares issued and outstanding as of June 30, 2019, and December 31, 2018, respectively 54 48
Additional paid-in capital 259,377 248,895
Accumulated deficit (249,029) (217,718)
Total stockholders’ equity 10,402 31,225
Total liabilities and stockholders’ equity $ 41,074 $ 53,170