Quarterly report pursuant to Section 13 or 15(d)

Unaudited Condensed Consolidated Balance Sheets

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Unaudited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 20,253 $ 41,920
Short-term investments 14,267 6,494
Prepaid expenses and other current assets 2,270 3,988
Total current assets 36,790 52,402
Other assets 812 812
Deferred offering costs 110 70
Restricted cash 273 273
Property and equipment, net 381 405
Operating lease right-of-use asset (See Note 7) 3,143 3,191
Total assets 41,509 57,153
Current liabilities:    
Accounts payable 5,222 7,177
Accrued expenses 1,792 3,801
Operating lease liability, current portion (See Note 7) 40 36
Total current liabilities 7,054 11,014
Warrant liabilities 13,628 18,396
Convertible debt and derivative liability (See Note 6) 11,100 11,522
Operating lease liability (See Note 7) 3,272 3,326
Total liabilities 35,054 44,258
Commitments and contingencies
Stockholders’ equity:    
Preferred stock, $0.001 par value, authorized 5,000,000 shares as of March 31, 2020 and December 31, 2019; 0 shares issued and outstanding as of March 31, 2020 and December 31, 2019 0 0
Common stock, $0.001 par value, 250,000,000 shares authorized as of March 31, 2020 and December 31, 2019; 97,876,042 and 97,413,721 shares issued and outstanding as of March 31, 2020 and December 31, 2019, respectively 98 97
Additional paid-in capital 284,787 284,226
Accumulated deficit (278,430) (271,428)
Total stockholders’ equity 6,455 12,895
Total liabilities and stockholders’ equity $ 41,509 $ 57,153