Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net loss	$ (44,795)	$ (40,254)
Reconciliation of net loss to net cash used in operating activities
Depreciation	3,899	3,213
Amortization of intellectual property	182	190
Accretion of asset retirement obligation	46	44
Fair value of warrant modification, net	0	402
Fair value of common stock issued for consulting services	4,925	423
Stock-based compensation	4,206	1,201
Warrant expense	5,780	0
Amortization of debt discount	0	2,006
Amortization of deferred financing costs	56	83
Non-cash convertible note interest expense	2,556	690
Non-cash interest expense	95	0
Lease liability, net of deferred rent write-off	0	(493)
Amortization of lease liability	0	(80)
Impairment of acquired intellectual property	90	0
Loss on sale of equipment	149	869
Inventory adjustment	0	179
Changes in operating assets and liabilities
Accounts receivable	481	157
Inventory	(492)	295
Prepaid expenses and other current assets	(612)	400
Accounts payable	823	472
Accrued expenses	(2,031)	4,009
Deferred rent	(35)	(124)
Other assets and liabilities	(500)	0
Net cash used in operating activities	(25,177)	(26,318)
Cash flows from investing activities:
Purchases of property and equipment	(12,802)	(3,693)
Other assets	0	(236)
Equipment deposits and other assets	(272)	0
Insurance proceeds	2,500	0
Net cash used in investing activities	(10,574)	(3,929)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of transaction costs	29,380	28,753
Payments on notes payable	(295)	(277)
Payments on capital leases	0	(130)
Payments on convertible note	(6,651)	0
Net cash provided by financing activities	22,434	28,346
Net decrease in cash, cash equivalents and restricted cash	(13,317)	(1,901)
Cash, cash equivalents and restricted cash at beginning of period	20,892	22,793
Cash, cash equivalents and restricted cash at end of period	7,575	20,892
Supplemental disclosure of cash flow information:
Cash paid for interest, net of amounts capitalized	697	668
Cash paid for income taxes	2	2
Non-cash financing activities
Capital lease	0	38
Fair value of common stock issued to consultants	4,925	423
Total non-cash financing activities	4,925	461
Supplemental disclosure of non-cash transactions
Change in property and equipment resulting from change in accounts payable	(1,921)	180
Change in property and equipment resulting from change in accrued expenses	(928)	(14)
Change in equity resulting from change in accrued expenses	1,300	600
Change in property and equipment resulting from fire damaged assets written off	(19,946)	0
Change in insurance proceeds receivable resulting from fire	$ 17,446	$ 0