| Dec'19 | Dec'18 | Dec'17 | ||||
|---|---|---|---|---|---|---|
Operating activities | ||||||
Net loss | ||||||
-47,583 | -53,135 | - | ||||
Net loss | ||||||
- | - | -29,154 | ||||
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||
Stock-based compensation | ||||||
3,376 | 2,195 | 514 | ||||
Depreciation and amortization | ||||||
2,567 | 1,543 | - | ||||
Non-cash lease expense | ||||||
225 | - | - | ||||
Loss on disposal of property and equipment | ||||||
-6 | - | - | ||||
Depreciation and amortization | ||||||
- | - | 931 | ||||
Amortization of discount and debt issuance costs on long-term debt | ||||||
75 | 17,550 | 9,837 | ||||
Non-cash interest expense | ||||||
- | 343 | 2,859 | ||||
Non-cash gain on early extinguishment of long-term debt | ||||||
- | 137 | - | ||||
Derivative fair value adjustment | ||||||
- | - | 9,872 | ||||
Warrant fair value adjustment | ||||||
- | -277 | -2,011 | ||||
Non-cash rent (income) expense | ||||||
- | -206 | 233 | ||||
Lease incentive | ||||||
- | - | 1,981 | ||||
Changes in operating assets and liabilities: | ||||||
Accounts receivable, net | ||||||
-272 | -1,349 | 328 | ||||
Prepaid expenses and other current assets | ||||||
371 | 67 | -25 | ||||
Other non-current assets | ||||||
-807 | -2,408 | 123 | ||||
Accounts payable | ||||||
294 | -1,281 | 1,872 | ||||
Accrued expenses | ||||||
-108 | -1,055 | 1,985 | ||||
Accrued compensation | ||||||
649 | 563 | -1 | ||||
Operating lease liabilities | ||||||
-422 | - | - | ||||
Accrued interest | ||||||
- | - | -105 | ||||
Deferred revenue | ||||||
-8,071 | -1,621 | -2,935 | ||||
Net cash used in operating activities | ||||||
-48,282 | -31,830 | -24,290 | ||||
Investing activities | ||||||
Purchases of property, plant and equipment | ||||||
1,850 | 870 | 2,544 | ||||
Net cash used in investing activities | ||||||
-1,850 | -870 | -2,544 | ||||
Financing activities | ||||||
Principal payments on finance leases | ||||||
998 | 608 | 384 | ||||
Payments for finance lease deposits | ||||||
34 | - | - | ||||
Proceeds from issuance of long-term debt | ||||||
5,000 | 11,000 | - | ||||
Refund of principal payments on long-term debt | ||||||
- | 588 | - | ||||
Proceeds from issuance of convertible notes | ||||||
- | - | 27,388 | ||||
Proceeds from issuance of long-term debt | ||||||
- | - | 4,000 | ||||
Principal payments on long-term debt | ||||||
- | 12,406 | 888 | ||||
Payments for debt issuance costs | ||||||
- | 397 | 1,397 | ||||
Proceeds from issuance of Series D preferred stock, net of issuance costs | ||||||
- | 25,106 | - | ||||
Proceeds from sale of common stock, net of underwriting fees and commissions | ||||||
63,039 | 47,320 | - | ||||
Payments for offering costs | ||||||
754 | 2,122 | - | ||||
Proceeds from exercise of stock options and warrants | ||||||
142 | 335 | - | ||||
Proceeds from exercise of stock options and warrants | ||||||
- | - | 96 | ||||
Net cash (used in) provided by financing activities | ||||||
66,394 | 68,817 | 28,814 | ||||
Net (decrease) increase in cash | ||||||
16,261 | 36,116 | 1,980 | ||||
Supplemental disclosure of cash flow information | ||||||
Cash paid for interest | ||||||
887 | 1,094 | 313 | ||||
Cash paid for operating lease liabilities | ||||||
1,081 | - | - | ||||
Right of use assets obtained with finance lease liabilities | ||||||
834 | - | - | ||||
Purchase of equipment with leases | ||||||
- | 456 | 796 | ||||
Changes in purchases of property and equipment in accounts payable and accrued expenses | ||||||
184 | 25 | 144 | ||||
Purchase of build-to-suit asset with deferred financing obligation | ||||||
- | 272 | 1,341 | ||||
Reclassification of deferred financing obligation to long-term debt | ||||||
- | 277 | - | ||||
Reclassification of financing costs on deferred financing obligation to discount on long-term debt | ||||||
- | 1,614 | - | ||||
Recording of discount on long-term debt | ||||||
- | 168 | - | ||||
Leasehold improvements paid by landlord | ||||||
936 | - | - | ||||
Conversion of accrued interest to long-term debt | ||||||
- | 144 | - | ||||
Conversion of accrued interest to long-term debt | ||||||
- | 144 | 41 | ||||
Recording of warrant liabilities with corresponding discount on convertible notes | ||||||
- | - | 4,474 | ||||
Recording of derivative liabilities with corresponding discount on convertible notes | ||||||
- | - | 9,872 | ||||
Conversion of convertible notes and accrued interest into Series D preferred stock | ||||||
- | 28,877 | - | ||||
Deferred offering costs and commissions incurred but not paid | ||||||
1,358 | 108 | - | ||||
Recording of discount on convertible notes as paid-in capital for beneficial conversion feature | ||||||
- | - | 12,119 | ||||
Debt issuance costs incurred but not paid | ||||||
- | - | 75 | ||||
Exercise of stock options through exchange of vested stock options | ||||||
- | 162 | - | ||||
Issuance of convertible note for debt issuance costs | ||||||
- | - | 442 | ||||