Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows (Unaudited)

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net loss	$ (33,525)	$ (26,722)
Reconciliation of net loss to net cash used in operating activities
Depreciation	2,987	2,354
Amortization of intellectual property	137	143
Accretion of asset retirement obligation	34	32
Fair value of warrant modification, net	0	402
Fair value of common stock issued for consulting services	4,075	0
Stock-based compensation	2,899	853
Warrant expense	4,046	0
Amortization of debt discount	0	1,152
Amortization of deferred financing costs	47	64
Non-cash convertible note interest expense	2,556	509
Non-cash interest expense	95	0
Loss on disposal of Ebonex asset	90	0
Loss on disposal of equipment	79	10
Inventory adjustment	0	179
Changes in operating assets and liabilities
Accounts receivable	(988)	21
Inventory	(1,058)	(29)
Prepaid expenses and other current assets	(507)	448
Accounts payable	2,763	483
Accrued expenses	(1,914)	827
Deferred rent	(35)	(116)
Other assets and liabilities	(372)	0
Net cash used in operating activities	(18,591)	(19,390)
Cash flows from investing activities:
Purchases of property and equipment	(8,146)	(3,057)
Equipment deposits and other assets	(1,122)	(10)
Net cash used in investing activities	(9,268)	(3,067)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of transaction costs	29,380	28,754
Payments on notes payable	(221)	(206)
Payments on finance leases	0	(112)
Payments on convertible note	(6,651)	0
Net cash provided by financing activities	22,508	28,436
Net decrease in cash and cash equivalents	(5,351)	5,979
Cash and cash equivalents at beginning of period	20,892	22,793
Cash and cash equivalents at end of period	15,541	28,772
Supplemental disclosure of cash flows information
Cash paid for income taxes	2	2
Cash paid for interest	454	465
Supplemental disclosure of non-cash transactions
Change in property and equipment resulting from change in accounts payable	(437)	(45)
Change in property and equipment resulting from change in accrued expenses	(259)	(8)
Change in equity resulting from change in accrued expenses	$ 1,300	$ 600