Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENTS OF CASH FLOWS

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CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Cash flows from operating activities:    
Net loss $ (5,584) $ (4,517)
Adjustments to reconcile loss to net cash used in operating activities:    
Depreciation and amortization 62 60
Non-cash interest expense 148 169
Non-cash loss on changes in fair value of warrants 923 0
Stock-based compensation (84) 136
Finance costs attributable to issuance of warrants 211 0
Changes in operating assets and liabilities:    
Receivables (558) (315)
Inventory (66) 16
Contract assets 0 99
Prepaid expenses and other assets (399) (335)
Accounts payable (64) (326)
Accrued sales allowances (608) 887
Other accrued liabilities 810 145
Deferred revenue 0 (313)
Other (3) (14)
Net cash used in operating activities (5,212) (4,308)
Cash flows from investing activities:    
Purchases of property and equipment (30) (44)
Net cash used in investing activities (30) (44)
Cash flows from financing activities:    
Net proceeds from equity offerings 1,895 0
Net proceeds from the exercises of common stock warrants 6,162 605
Net cash provided by financing activities 8,057 605
Net decrease in cash and cash equivalents 2,815 (3,747)
Cash and cash equivalents at beginning of period 5,223 9,656
Cash and cash equivalents at end of period 8,038 5,909
Supplemental disclosure of cash flow information:    
Interest paid 102 109
Purchases of property and equipment included in accounts payable $ 6 $ 3