v3.22.1
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Operating activities    
Net loss $ (5,619) $ (10,028)
Adjustments to reconcile net loss to net cash used by operating activities:    
Depreciation and amortization 370 585
Stock-based compensation 531 (1,450)
Unrealized (gain) loss on mark-to-market of common stock warrants (435)  
Changes in operating assets and liabilities:    
Accounts receivable   3,533
Due to/from related parties (108) (652)
Inventory   (3,149)
Prepaid expenses and other current assets (110) 583
Accounts payable (145) 30
Accrued expenses 37 167
Accrued compensation (313) (186)
Other (612) 1,150
Net cash used by operating activities (6,404) (9,417)
Investing activities    
Sales and (purchases) of short-term investments, net   8,653
Purchases of land, buildings, and equipment (545) (269)
Net cash (used by) provided by investing activities (545) 8,384
Financing activities    
Proceeds from the issuance of common stock and pre-funded warrants 11,209  
Costs incurred related to the issuance of common stock and pre-funded warrants (704)  
Repayments of financing lease obligations (94) (88)
Proceeds from the exercise of stock options 0 208
Net cash provided by financing activities 10,411 120
Net increase (decrease) in cash, cash equivalents, and restricted cash 3,462 (913)
Cash, cash equivalents and restricted cash - beginning of period 14,421 18,289
Cash, cash equivalents and restricted cash - end of period $ 17,883 $ 17,376

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