| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Jun'15 | Dec'14 |
|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||
Net loss | ||||||
-115,549 | -93,971 | -59,101 | -43,930 | - | - | - |
Net loss | ||||||
- | - | - | - | -29,877 | -67 | -18,885 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||
Depreciation and amortization expense | ||||||
1,001 | 270 | 227 | 155 | - | - | - |
Depreciation expense | ||||||
- | - | - | - | 118 | - | 189 |
Non-cash interest expense (debt discount and deferred costs) | ||||||
8,457 | 3,317 | 453 | 252 | 77 | - | 67 |
Loss on extinguishment of debt | ||||||
-398 | - | - | - | - | - | - |
Change in fair value of warrants | ||||||
- | - | - | 430 | -46 | - | -8 |
Change in fair value of derivative liabilities | ||||||
-29,232 | -209 | - | - | - | - | - |
Stock-based compensation expense | ||||||
8,052 | 6,412 | 3,993 | 2,421 | 1,433 | - | 539 |
Provision for inventory obsolescence and net realizable value | ||||||
3,970 | 201 | 226 | - | - | - | - |
Net realized gain on marketable securities | ||||||
- | 115 | 128 | - | - | - | - |
Loss on disposal of assets | ||||||
-310 | - | - | - | - | - | - |
Changes in assets and liabilities: | ||||||
Accounts receivable | ||||||
3,282 | 3,715 | 3,131 | 250 | - | - | - |
Prepaid expenses and other current assets | ||||||
527 | 1,893 | 1,727 | -659 | 314 | - | 514 |
Inventory | ||||||
10,668 | 7,441 | 2,741 | 477 | - | - | - |
Deposits and other assets | ||||||
3,442 | -59 | 71 | -43 | 89 | - | - |
Accounts payable | ||||||
-122 | -3,395 | 4,642 | 1,817 | 3,232 | - | -674 |
Accrued expenses and other current liabilities | ||||||
4,827 | 8,355 | 823 | 893 | - | - | - |
Deferred revenue | ||||||
-628 | 628 | - | - | - | - | - |
Accrued interest | ||||||
388 | 710 | 781 | -54 | - | - | - |
Deferred rent | ||||||
- | - | - | 25 | 1 | - | 16 |
Other | ||||||
- | -16 | -15 | - | - | - | - |
Increase (decrease) in accrued expenses | ||||||
- | - | - | - | - | 15 | - |
Net cash used in operating activities | ||||||
-136,047 | -90,771 | -55,739 | -38,016 | - | -10 | - |
Cash flows from investing activities | ||||||
Net cash used in operating activities | ||||||
- | - | - | - | -25,465 | - | -19,270 |
Capital expenditures | ||||||
1,045 | 989 | 345 | 479 | 202 | - | 29 |
Purchases of marketable securities | ||||||
- | 7,935 | 33,181 | 7,291 | - | - | - |
Sales and maturities of marketable securities | ||||||
- | 28,350 | 20,300 | - | - | - | - |
Net cash (used in) provided by investing activities | ||||||
-1,045 | 19,426 | -13,226 | -7,770 | - | - | - |
Cash flows from financing activities | ||||||
Proceeds from issuance of common stock | ||||||
28,750 | 149,502 | 67,556 | 46,184 | - | 15 | - |
Proceeds from Solar Term Loan, net of costs | ||||||
- | - | - | - | - | - | 9,879 |
Common stock issuance costs | ||||||
1,993 | 458 | 695 | 447 | - | - | - |
Sale of Series D convertible preferred stock, net of costs | ||||||
- | - | - | - | - | - | 20,090 |
Sale of Series E convertible preferred stock, net of costs | ||||||
- | - | - | - | 10,633 | - | - |
Repurchase shares as result of reverse merger | ||||||
- | - | - | - | 12 | - | - |
Net cash provided by (used in) investing activities | ||||||
- | - | - | - | -202 | - | -29 |
Proceeds from exercise of stock options and stock warrants | ||||||
108 | 2,259 | 287 | - | 62 | - | 10 |
Proceeds from issuance of warrants | ||||||
722 | - | 104 | - | - | - | - |
Proceeds from exercise of stock options and stock warrants | ||||||
- | - | - | 161 | - | - | - |
Proceeds from issuance of notes | ||||||
82,000 | 52,950 | 5,000 | 22,500 | - | - | - |
Notes issuance costs | ||||||
4,301 | 2,245 | 104 | - | - | - | - |
Proceeds from issuance of term loans | ||||||
45,000 | - | - | - | - | - | - |
Term loans issuance costs | ||||||
2,049 | - | - | - | - | - | - |
Repayment of Oxford and SVB Term Loan | ||||||
15,000 | 10,000 | - | 12,500 | - | - | - |
Repurchase of 2023 notes | ||||||
37,000 | - | - | - | - | - | - |
Financing costs of notes | ||||||
- | - | - | 1,004 | - | - | - |
Principal payments under capital lease obligations | ||||||
- | 20 | 80 | - | - | - | 3 |
Net cash provided by financing activities | ||||||
96,237 | 191,988 | 72,068 | 54,894 | - | 4 | - |
Net (decrease) increase in cash and cash equivalents | ||||||
-40,855 | 120,643 | 3,103 | 9,108 | - | - | - |
Net cash provided by financing activities | ||||||
- | - | - | - | 10,683 | - | 29,976 |
Net (decrease) increase in cash and cash equivalents | ||||||
- | - | - | - | -14,984 | - | 10,677 |
Supplemental disclosure of cash flow information | ||||||
Cash paid during the period for interest | ||||||
5,233 | 3,136 | 1,830 | 893 | - | - | - |
Lease liabilities arising from obtaining right-of-use assets | ||||||
2,974 | - | - | - | - | - | - |
Supplemental disclosure of non-cash investing and financing activities | ||||||
Property and equipment purchases included in accounts payable and accrued expenses | ||||||
32 | 178 | - | - | - | - | - |
Cash paid during the period for interest | ||||||
- | - | - | - | 660 | 0 | 93 |
Income taxes paid | ||||||
- | - | - | - | - | 0 | - |
2023 Notes | ||||||
Loss on extinguishment of debt | ||||||
-398 | - | - | - | - | - | - |