Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Operating activities    
Net loss $ (31,441) $ (27,447)
Adjustments to reconcile net loss to net cash used by operating activities:    
Depreciation and amortization 1,372 1,051
Stock-based compensation 3,638 6,565
Changes in operating assets and liabilities:    
Accounts receivable (1,310) (1,304)
Due to/from related parties (498) (1,223)
Inventory (3,359) (2,371)
Prepaid expenses and other current assets (707) 192
Accounts payable 86 127
Accrued expenses 1,717 (49)
Accrued compensation (572) 478
Other current liabilities (64) (743)
Other non-current assets 140 36
Net cash used by operating activities (30,998) (24,688)
Investing activities    
Purchases of land, buildings, and equipment (1,146) (2,538)
Short-term investments (20,802)  
Net cash used by investing activities (21,948) (2,538)
Financing activities    
Proceeds from Payroll Protection Program loan 1,518  
Repayments of financing lease obligations (217) (195)
Proceeds from the exercise of stock options 211 314
Costs incurred related to shares withheld for net share settlement   (645)
Proceeds from the sale and leaseback of land, buildings, and equipment   414
Net cash provided (used) by financing activities 1,512 (112)
Net decrease in cash, cash equivalents and restricted cash (51,434) (27,338)
Cash, cash equivalents and restricted cash - beginning of period 60,038 95,288
Cash, cash equivalents and restricted cash – end of period $ 8,604 $ 67,950