Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash flows from operating activities:    
Net loss $ (11,475) $ (6,660)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 704 772
Amortization of right-of-use assets 427 500
Amortization of intangible assets 69 47
Amortization of debt discount and deferred financing fees 220 112
Provision for bad debt 267 (26)
Provision for inventory write-down 459 783
Change in fair value of derivatives (252) 22
Investment losses 96 15
Stock-based compensation 2,678 2,694
Change in operating assets and liabilities:    
Accounts receivable (624) (2,181)
Inventory (1,166) (1,642)
Prepaid expenses and other (1,030) (313)
Accounts payable and accrued expenses (1,104) (5,061)
Operating lease obligations (320) 119
Contract and other liabilities 0 (1)
Net cash used in operating activities (11,051) (10,820)
Cash flows from investing activities:    
Purchase of property and equipment (5,037) (3,095)
Purchase of investments (6,024) (15,279)
Proceeds from sale of investments 4,400 19,400
Cash payments for intangible assets (580) (156)
Net cash (used in) provided by investing activities (7,241) 870
Cash flows from financing activities:    
Cash paid for debt portion of finance leases (2) (4)
Proceeds from exercise of stock options and ESPP stock purchases 97 521
Net cash provided by financing activities 95 517
Net decrease in cash, cash equivalents, and restricted cash (18,197) (9,433)
Cash, cash equivalents, and restricted cash, beginning of period 39,007 55,609
Cash, cash equivalents, and restricted cash, end of period 20,810 46,176
Supplemental disclosures of cash flow activity:    
Cash paid for interest, net of capitalized interest 0 312
Supplemental disclosure of non-cash investing and financing activities:    
Acquisition of fixed assets in accounts payable and accrued expenses 1,119 4,836
Obtaining a right-of-use asset in exchange for a lease liability 641 321
Acquisition of intangible assets in accounts payable and accrued expenses $ 239 $ 166